Commit | Line | Data |
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1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
4 | |
5 | /* | |
1da177e4 LT |
6 | * This file contains the driver for the Cyclades async multiport |
7 | * serial boards. | |
8 | * | |
9 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
10 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
1da177e4 | 11 | * |
ebdb5135 | 12 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
13 | * |
14 | * Much of the design and some of the code came from serial.c | |
15 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
16 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
17 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 18 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 | 19 | * |
1da177e4 LT |
20 | */ |
21 | ||
ebdb5135 | 22 | #define CY_VERSION "2.6" |
096dcfce | 23 | |
1da177e4 LT |
24 | /* If you need to install more boards than NR_CARDS, change the constant |
25 | in the definition below. No other change is necessary to support up to | |
26 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
27 | ||
02f1175c | 28 | #define NR_CARDS 4 |
1da177e4 LT |
29 | |
30 | /* | |
31 | If the total number of ports is larger than NR_PORTS, change this | |
32 | constant in the definition below. No other change is necessary to | |
33 | support more boards/ports. */ | |
34 | ||
02f1175c | 35 | #define NR_PORTS 256 |
1da177e4 | 36 | |
1da177e4 LT |
37 | #define ZO_V1 0 |
38 | #define ZO_V2 1 | |
39 | #define ZE_V1 2 | |
40 | ||
41 | #define SERIAL_PARANOIA_CHECK | |
42 | #undef CY_DEBUG_OPEN | |
43 | #undef CY_DEBUG_THROTTLE | |
44 | #undef CY_DEBUG_OTHER | |
45 | #undef CY_DEBUG_IO | |
46 | #undef CY_DEBUG_COUNT | |
47 | #undef CY_DEBUG_DTR | |
48 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
49 | #undef CY_DEBUG_INTERRUPTS | |
50 | #undef CY_16Y_HACK | |
51 | #undef CY_ENABLE_MONITORING | |
52 | #undef CY_PCI_DEBUG | |
53 | ||
1da177e4 | 54 | /* |
15ed6cc0 | 55 | * Include section |
1da177e4 | 56 | */ |
1da177e4 LT |
57 | #include <linux/module.h> |
58 | #include <linux/errno.h> | |
59 | #include <linux/signal.h> | |
60 | #include <linux/sched.h> | |
61 | #include <linux/timer.h> | |
62 | #include <linux/interrupt.h> | |
63 | #include <linux/tty.h> | |
33f0f88f | 64 | #include <linux/tty_flip.h> |
1da177e4 LT |
65 | #include <linux/serial.h> |
66 | #include <linux/major.h> | |
67 | #include <linux/string.h> | |
68 | #include <linux/fcntl.h> | |
69 | #include <linux/ptrace.h> | |
70 | #include <linux/cyclades.h> | |
71 | #include <linux/mm.h> | |
72 | #include <linux/ioport.h> | |
73 | #include <linux/init.h> | |
74 | #include <linux/delay.h> | |
75 | #include <linux/spinlock.h> | |
76 | #include <linux/bitops.h> | |
054f5b0a | 77 | #include <linux/firmware.h> |
9f56fad7 | 78 | #include <linux/device.h> |
5a0e3ad6 | 79 | #include <linux/slab.h> |
1da177e4 | 80 | |
15ed6cc0 | 81 | #include <linux/io.h> |
15ed6cc0 | 82 | #include <linux/uaccess.h> |
1da177e4 | 83 | |
1da177e4 LT |
84 | #include <linux/kernel.h> |
85 | #include <linux/pci.h> | |
86 | ||
87 | #include <linux/stat.h> | |
88 | #include <linux/proc_fs.h> | |
444697d6 | 89 | #include <linux/seq_file.h> |
1da177e4 | 90 | |
02f1175c | 91 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
1da177e4 | 92 | |
1da177e4 LT |
93 | #ifndef SERIAL_XMIT_SIZE |
94 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
95 | #endif | |
1da177e4 LT |
96 | |
97 | #define STD_COM_FLAGS (0) | |
98 | ||
054f5b0a JS |
99 | /* firmware stuff */ |
100 | #define ZL_MAX_BLOCKS 16 | |
101 | #define DRIVER_VERSION 0x02010203 | |
102 | #define RAM_SIZE 0x80000 | |
103 | ||
054f5b0a JS |
104 | enum zblock_type { |
105 | ZBLOCK_PRG = 0, | |
106 | ZBLOCK_FPGA = 1 | |
107 | }; | |
108 | ||
109 | struct zfile_header { | |
110 | char name[64]; | |
111 | char date[32]; | |
112 | char aux[32]; | |
113 | u32 n_config; | |
114 | u32 config_offset; | |
115 | u32 n_blocks; | |
116 | u32 block_offset; | |
117 | u32 reserved[9]; | |
118 | } __attribute__ ((packed)); | |
119 | ||
120 | struct zfile_config { | |
121 | char name[64]; | |
122 | u32 mailbox; | |
123 | u32 function; | |
124 | u32 n_blocks; | |
125 | u32 block_list[ZL_MAX_BLOCKS]; | |
126 | } __attribute__ ((packed)); | |
127 | ||
128 | struct zfile_block { | |
129 | u32 type; | |
130 | u32 file_offset; | |
131 | u32 ram_offset; | |
132 | u32 size; | |
133 | } __attribute__ ((packed)); | |
134 | ||
1da177e4 LT |
135 | static struct tty_driver *cy_serial_driver; |
136 | ||
137 | #ifdef CONFIG_ISA | |
138 | /* This is the address lookup table. The driver will probe for | |
139 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
140 | driver to probe addresses at a different address, add it to | |
141 | this table. If the driver is probing some other board and | |
142 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
143 | */ |
144 | ||
145 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
146 | 0xD0000, |
147 | 0xD2000, | |
148 | 0xD4000, | |
149 | 0xD6000, | |
150 | 0xD8000, | |
151 | 0xDA000, | |
152 | 0xDC000, | |
153 | 0xDE000, | |
154 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 155 | }; |
02f1175c | 156 | |
fe971071 | 157 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 | 158 | |
3046d50e JS |
159 | static long maddr[NR_CARDS]; |
160 | static int irq[NR_CARDS]; | |
1da177e4 LT |
161 | |
162 | module_param_array(maddr, long, NULL, 0); | |
163 | module_param_array(irq, int, NULL, 0); | |
1da177e4 | 164 | |
02f1175c | 165 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
166 | |
167 | /* This is the per-card data structure containing address, irq, number of | |
168 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
169 | */ | |
170 | static struct cyclades_card cy_card[NR_CARDS]; | |
171 | ||
02f1175c | 172 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 173 | |
1da177e4 LT |
174 | /* |
175 | * This is used to look up the divisor speeds and the timeouts | |
176 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 177 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
178 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
179 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
180 | * HI VHI | |
181 | * 20 | |
182 | */ | |
ebdb5135 | 183 | static const int baud_table[] = { |
02f1175c JS |
184 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
185 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
186 | 230400, 0 | |
187 | }; | |
188 | ||
ebdb5135 | 189 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
190 | /* value => 00 01 02 03 04 */ |
191 | /* divide by 8 32 128 512 2048 */ | |
192 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
193 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
194 | }; | |
195 | ||
ebdb5135 | 196 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
197 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
198 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
199 | }; | |
200 | ||
ebdb5135 | 201 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
202 | /* value => 00 01 02 03 04 */ |
203 | /* divide by 8 32 128 512 2048 */ | |
204 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
205 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
206 | 0x00 | |
207 | }; | |
208 | ||
ebdb5135 | 209 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
210 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
211 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
212 | 0x21 | |
213 | }; | |
214 | ||
ebdb5135 | 215 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
216 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
217 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
218 | 0x07 | |
219 | }; | |
1da177e4 LT |
220 | |
221 | /* | |
222 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
223 | * The cyclades_port structure member rflow and the vector rflow_thr |
224 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
225 | * data loss even when the system interrupt latency is too high. These flags | |
226 | * are to be used only with very special applications. Setting these flags | |
227 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
228 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
229 | * cables. |
230 | */ | |
231 | ||
ebdb5135 | 232 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
233 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
234 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
235 | 0x0a | |
236 | }; | |
1da177e4 LT |
237 | |
238 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
239 | * address order. This look-up table overcomes that problem. | |
240 | */ | |
f0eefdc3 | 241 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
242 | 0x0400, |
243 | 0x0800, | |
244 | 0x0C00, | |
245 | 0x0200, | |
246 | 0x0600, | |
247 | 0x0A00, | |
248 | 0x0E00 | |
249 | }; | |
1da177e4 LT |
250 | |
251 | /* PCI related definitions */ | |
252 | ||
1da177e4 | 253 | #ifdef CONFIG_PCI |
ebdb5135 | 254 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
255 | /* PCI < 1Mb */ |
256 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
257 | /* PCI > 1Mb */ | |
258 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
259 | /* 4Y PCI < 1Mb */ | |
260 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
261 | /* 4Y PCI > 1Mb */ | |
262 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
263 | /* 8Y PCI < 1Mb */ | |
264 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
265 | /* 8Y PCI > 1Mb */ | |
266 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
267 | /* Z PCI < 1Mb */ | |
268 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
269 | /* Z PCI > 1Mb */ | |
270 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 271 | { } /* end of table */ |
02f1175c | 272 | }; |
893de2df | 273 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
274 | #endif |
275 | ||
276 | static void cy_start(struct tty_struct *); | |
d13549f8 | 277 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 278 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
279 | #ifdef CONFIG_ISA |
280 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 281 | #endif /* CONFIG_ISA */ |
1da177e4 | 282 | |
1da177e4 LT |
283 | #ifndef CONFIG_CYZ_INTR |
284 | static void cyz_poll(unsigned long); | |
285 | ||
286 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
287 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
288 | ||
8d06afab | 289 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 290 | |
02f1175c | 291 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
292 | static void cyz_rx_restart(unsigned long); |
293 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 294 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 295 | |
3aeea5b9 JS |
296 | static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
297 | { | |
298 | struct cyclades_card *card = port->card; | |
299 | ||
300 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); | |
301 | } | |
302 | ||
303 | static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) | |
304 | { | |
305 | struct cyclades_card *card = port->card; | |
306 | ||
307 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); | |
308 | } | |
309 | ||
2693f485 JS |
310 | static inline bool cy_is_Z(struct cyclades_card *card) |
311 | { | |
312 | return card->num_chips == (unsigned int)-1; | |
313 | } | |
314 | ||
315 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
316 | { | |
317 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
318 | } | |
319 | ||
320 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
321 | { | |
322 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
323 | } | |
324 | ||
325 | static inline bool cyz_is_loaded(struct cyclades_card *card) | |
326 | { | |
327 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
328 | ||
329 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
330 | readl(&fw_id->signature) == ZFIRM_ID; | |
331 | } | |
332 | ||
02f1175c | 333 | static inline int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 334 | const char *name, const char *routine) |
1da177e4 LT |
335 | { |
336 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 337 | if (!info) { |
21719191 JS |
338 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
339 | "in %s\n", name, routine); | |
02f1175c JS |
340 | return 1; |
341 | } | |
342 | ||
02f1175c | 343 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
344 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
345 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
346 | return 1; |
347 | } | |
1da177e4 | 348 | #endif |
02f1175c | 349 | return 0; |
ebdb5135 | 350 | } |
1da177e4 | 351 | |
1da177e4 LT |
352 | /***********************************************************/ |
353 | /********* Start of block of Cyclom-Y specific code ********/ | |
354 | ||
355 | /* This routine waits up to 1000 micro-seconds for the previous | |
356 | command to the Cirrus chip to complete and then issues the | |
357 | new command. An error is returned if the previous command | |
358 | didn't finish within the time limit. | |
359 | ||
360 | This function is only called from inside spinlock-protected code. | |
361 | */ | |
3aeea5b9 | 362 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
1da177e4 | 363 | { |
3aeea5b9 | 364 | void __iomem *ccr = base_addr + (CyCCR << index); |
ad39c300 | 365 | unsigned int i; |
1da177e4 | 366 | |
02f1175c JS |
367 | /* Check to see that the previous command has completed */ |
368 | for (i = 0; i < 100; i++) { | |
3aeea5b9 | 369 | if (readb(ccr) == 0) |
02f1175c | 370 | break; |
02f1175c | 371 | udelay(10L); |
1da177e4 | 372 | } |
02f1175c JS |
373 | /* if the CCR never cleared, the previous command |
374 | didn't finish within the "reasonable time" */ | |
375 | if (i == 100) | |
096dcfce | 376 | return -1; |
1da177e4 | 377 | |
02f1175c | 378 | /* Issue the new command */ |
3aeea5b9 | 379 | cy_writeb(ccr, cmd); |
1da177e4 | 380 | |
096dcfce | 381 | return 0; |
3aeea5b9 JS |
382 | } |
383 | ||
384 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) | |
385 | { | |
386 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, | |
387 | port->card->bus_index); | |
388 | } | |
1da177e4 LT |
389 | |
390 | #ifdef CONFIG_ISA | |
391 | /* ISA interrupt detection code */ | |
15ed6cc0 | 392 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 393 | { |
02f1175c JS |
394 | int irq; |
395 | unsigned long irqs, flags; | |
396 | int save_xir, save_car; | |
397 | int index = 0; /* IRQ probing is only for ISA */ | |
398 | ||
399 | /* forget possible initially masked and pending IRQ */ | |
400 | irq = probe_irq_off(probe_irq_on()); | |
401 | ||
402 | /* Clear interrupts on the board first */ | |
403 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
404 | /* Cy_ClrIntr is 0x1800 */ | |
405 | ||
406 | irqs = probe_irq_on(); | |
407 | /* Wait ... */ | |
f6e208c1 | 408 | msleep(5); |
02f1175c JS |
409 | |
410 | /* Enable the Tx interrupts on the CD1400 */ | |
411 | local_irq_save(flags); | |
412 | cy_writeb(address + (CyCAR << index), 0); | |
3aeea5b9 | 413 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
02f1175c JS |
414 | |
415 | cy_writeb(address + (CyCAR << index), 0); | |
416 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 417 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
418 | local_irq_restore(flags); |
419 | ||
420 | /* Wait ... */ | |
f6e208c1 | 421 | msleep(5); |
02f1175c JS |
422 | |
423 | /* Check which interrupt is in use */ | |
424 | irq = probe_irq_off(irqs); | |
425 | ||
426 | /* Clean up */ | |
db05c3b1 JS |
427 | save_xir = (u_char) readb(address + (CyTIR << index)); |
428 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
429 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
430 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 431 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
432 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
433 | cy_writeb(address + (CyCAR << index), (save_car)); | |
434 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
435 | /* Cy_ClrIntr is 0x1800 */ | |
436 | ||
437 | return (irq > 0) ? irq : 0; | |
1da177e4 | 438 | } |
02f1175c | 439 | #endif /* CONFIG_ISA */ |
1da177e4 | 440 | |
ce97a097 JS |
441 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
442 | void __iomem *base_addr) | |
e941027f JS |
443 | { |
444 | struct cyclades_port *info; | |
445 | struct tty_struct *tty; | |
65f76a82 | 446 | int len, index = cinfo->bus_index; |
3aeea5b9 | 447 | u8 ivr, save_xir, channel, save_car, data, char_count; |
e941027f | 448 | |
e941027f | 449 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 450 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 451 | #endif |
ce97a097 | 452 | /* determine the channel & change to that context */ |
65f76a82 JS |
453 | save_xir = readb(base_addr + (CyRIR << index)); |
454 | channel = save_xir & CyIRChannel; | |
ce97a097 | 455 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
456 | save_car = cyy_readb(info, CyCAR); |
457 | cyy_writeb(info, CyCAR, save_xir); | |
458 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; | |
ce97a097 | 459 | |
d13549f8 | 460 | tty = tty_port_tty_get(&info->port); |
ce97a097 | 461 | /* if there is nowhere to put the data, discard it */ |
d13549f8 | 462 | if (tty == NULL) { |
3aeea5b9 JS |
463 | if (ivr == CyIVRRxEx) { /* exception */ |
464 | data = cyy_readb(info, CyRDSR); | |
ce97a097 | 465 | } else { /* normal character reception */ |
3aeea5b9 | 466 | char_count = cyy_readb(info, CyRDCR); |
ce97a097 | 467 | while (char_count--) |
3aeea5b9 | 468 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
469 | } |
470 | goto end; | |
471 | } | |
472 | /* there is an open port for this data */ | |
3aeea5b9 JS |
473 | if (ivr == CyIVRRxEx) { /* exception */ |
474 | data = cyy_readb(info, CyRDSR); | |
ce97a097 JS |
475 | |
476 | /* For statistics only */ | |
477 | if (data & CyBREAK) | |
478 | info->icount.brk++; | |
479 | else if (data & CyFRAME) | |
480 | info->icount.frame++; | |
481 | else if (data & CyPARITY) | |
482 | info->icount.parity++; | |
483 | else if (data & CyOVERRUN) | |
484 | info->icount.overrun++; | |
485 | ||
486 | if (data & info->ignore_status_mask) { | |
487 | info->icount.rx++; | |
d13549f8 | 488 | tty_kref_put(tty); |
ce97a097 JS |
489 | return; |
490 | } | |
491 | if (tty_buffer_request_room(tty, 1)) { | |
492 | if (data & info->read_status_mask) { | |
493 | if (data & CyBREAK) { | |
494 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
495 | cyy_readb(info, CyRDSR), |
496 | TTY_BREAK); | |
ce97a097 | 497 | info->icount.rx++; |
77451e53 | 498 | if (info->port.flags & ASYNC_SAK) |
ce97a097 JS |
499 | do_SAK(tty); |
500 | } else if (data & CyFRAME) { | |
15ed6cc0 | 501 | tty_insert_flip_char(tty, |
3aeea5b9 JS |
502 | cyy_readb(info, CyRDSR), |
503 | TTY_FRAME); | |
ce97a097 JS |
504 | info->icount.rx++; |
505 | info->idle_stats.frame_errs++; | |
506 | } else if (data & CyPARITY) { | |
507 | /* Pieces of seven... */ | |
508 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
509 | cyy_readb(info, CyRDSR), |
510 | TTY_PARITY); | |
ce97a097 JS |
511 | info->icount.rx++; |
512 | info->idle_stats.parity_errs++; | |
513 | } else if (data & CyOVERRUN) { | |
514 | tty_insert_flip_char(tty, 0, | |
515 | TTY_OVERRUN); | |
516 | info->icount.rx++; | |
517 | /* If the flip buffer itself is | |
518 | overflowing, we still lose | |
519 | the next incoming character. | |
520 | */ | |
521 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
522 | cyy_readb(info, CyRDSR), |
523 | TTY_FRAME); | |
02f1175c | 524 | info->icount.rx++; |
02f1175c | 525 | info->idle_stats.overruns++; |
ce97a097 JS |
526 | /* These two conditions may imply */ |
527 | /* a normal read should be done. */ | |
528 | /* } else if(data & CyTIMEOUT) { */ | |
529 | /* } else if(data & CySPECHAR) { */ | |
530 | } else { | |
531 | tty_insert_flip_char(tty, 0, | |
532 | TTY_NORMAL); | |
533 | info->icount.rx++; | |
02f1175c | 534 | } |
ce97a097 JS |
535 | } else { |
536 | tty_insert_flip_char(tty, 0, TTY_NORMAL); | |
537 | info->icount.rx++; | |
538 | } | |
539 | } else { | |
540 | /* there was a software buffer overrun and nothing | |
541 | * could be done about it!!! */ | |
542 | info->icount.buf_overrun++; | |
543 | info->idle_stats.overruns++; | |
544 | } | |
545 | } else { /* normal character reception */ | |
546 | /* load # chars available from the chip */ | |
3aeea5b9 | 547 | char_count = cyy_readb(info, CyRDCR); |
e941027f JS |
548 | |
549 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
550 | ++info->mon.int_count; |
551 | info->mon.char_count += char_count; | |
552 | if (char_count > info->mon.char_max) | |
553 | info->mon.char_max = char_count; | |
554 | info->mon.char_last = char_count; | |
e941027f | 555 | #endif |
ce97a097 JS |
556 | len = tty_buffer_request_room(tty, char_count); |
557 | while (len--) { | |
3aeea5b9 | 558 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
559 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
560 | info->idle_stats.recv_bytes++; | |
561 | info->icount.rx++; | |
e941027f | 562 | #ifdef CY_16Y_HACK |
ce97a097 | 563 | udelay(10L); |
e941027f | 564 | #endif |
e941027f | 565 | } |
ce97a097 | 566 | info->idle_stats.recv_idle = jiffies; |
e941027f | 567 | } |
ce97a097 | 568 | tty_schedule_flip(tty); |
d13549f8 | 569 | tty_kref_put(tty); |
ce97a097 JS |
570 | end: |
571 | /* end of service */ | |
3aeea5b9 JS |
572 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
573 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 574 | } |
e941027f | 575 | |
65f76a82 | 576 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
577 | void __iomem *base_addr) |
578 | { | |
579 | struct cyclades_port *info; | |
d13549f8 | 580 | struct tty_struct *tty; |
65f76a82 JS |
581 | int char_count, index = cinfo->bus_index; |
582 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
583 | |
584 | /* Since we only get here when the transmit buffer | |
585 | is empty, we know we can always stuff a dozen | |
586 | characters. */ | |
e941027f | 587 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 588 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
589 | #endif |
590 | ||
ce97a097 | 591 | /* determine the channel & change to that context */ |
65f76a82 JS |
592 | save_xir = readb(base_addr + (CyTIR << index)); |
593 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
594 | save_car = readb(base_addr + (CyCAR << index)); |
595 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
596 | ||
ce97a097 | 597 | info = &cinfo->ports[channel + chip * 4]; |
d13549f8 JS |
598 | tty = tty_port_tty_get(&info->port); |
599 | if (tty == NULL) { | |
3aeea5b9 | 600 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
ce97a097 JS |
601 | goto end; |
602 | } | |
02f1175c | 603 | |
ce97a097 JS |
604 | /* load the on-chip space for outbound data */ |
605 | char_count = info->xmit_fifo_size; | |
02f1175c | 606 | |
ce97a097 JS |
607 | if (info->x_char) { /* send special char */ |
608 | outch = info->x_char; | |
3aeea5b9 | 609 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
610 | char_count--; |
611 | info->icount.tx++; | |
612 | info->x_char = 0; | |
613 | } | |
02f1175c | 614 | |
ce97a097 JS |
615 | if (info->breakon || info->breakoff) { |
616 | if (info->breakon) { | |
3aeea5b9 JS |
617 | cyy_writeb(info, CyTDR, 0); |
618 | cyy_writeb(info, CyTDR, 0x81); | |
ce97a097 JS |
619 | info->breakon = 0; |
620 | char_count -= 2; | |
e941027f | 621 | } |
ce97a097 | 622 | if (info->breakoff) { |
3aeea5b9 JS |
623 | cyy_writeb(info, CyTDR, 0); |
624 | cyy_writeb(info, CyTDR, 0x83); | |
ce97a097 JS |
625 | info->breakoff = 0; |
626 | char_count -= 2; | |
e941027f | 627 | } |
ce97a097 | 628 | } |
02f1175c | 629 | |
ce97a097 JS |
630 | while (char_count-- > 0) { |
631 | if (!info->xmit_cnt) { | |
3aeea5b9 JS |
632 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
633 | cyy_writeb(info, CySRER, | |
634 | cyy_readb(info, CySRER) & ~CyTxMpty); | |
ce97a097 | 635 | } else { |
3aeea5b9 JS |
636 | cyy_writeb(info, CySRER, CyTxMpty | |
637 | (cyy_readb(info, CySRER) & ~CyTxRdy)); | |
02f1175c | 638 | } |
ce97a097 JS |
639 | goto done; |
640 | } | |
77451e53 | 641 | if (info->port.xmit_buf == NULL) { |
3aeea5b9 JS |
642 | cyy_writeb(info, CySRER, |
643 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
644 | goto done; |
645 | } | |
d13549f8 | 646 | if (tty->stopped || tty->hw_stopped) { |
3aeea5b9 JS |
647 | cyy_writeb(info, CySRER, |
648 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
649 | goto done; |
650 | } | |
651 | /* Because the Embedded Transmit Commands have been enabled, | |
652 | * we must check to see if the escape character, NULL, is being | |
653 | * sent. If it is, we must ensure that there is room for it to | |
654 | * be doubled in the output stream. Therefore we no longer | |
655 | * advance the pointer when the character is fetched, but | |
656 | * rather wait until after the check for a NULL output | |
657 | * character. This is necessary because there may not be room | |
658 | * for the two chars needed to send a NULL.) | |
659 | */ | |
77451e53 | 660 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
661 | if (outch) { |
662 | info->xmit_cnt--; | |
663 | info->xmit_tail = (info->xmit_tail + 1) & | |
664 | (SERIAL_XMIT_SIZE - 1); | |
3aeea5b9 | 665 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
666 | info->icount.tx++; |
667 | } else { | |
668 | if (char_count > 1) { | |
02f1175c JS |
669 | info->xmit_cnt--; |
670 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 671 | (SERIAL_XMIT_SIZE - 1); |
3aeea5b9 JS |
672 | cyy_writeb(info, CyTDR, outch); |
673 | cyy_writeb(info, CyTDR, 0); | |
02f1175c | 674 | info->icount.tx++; |
ce97a097 | 675 | char_count--; |
02f1175c | 676 | } |
e941027f | 677 | } |
e941027f JS |
678 | } |
679 | ||
ce97a097 | 680 | done: |
d13549f8 JS |
681 | tty_wakeup(tty); |
682 | tty_kref_put(tty); | |
ce97a097 JS |
683 | end: |
684 | /* end of service */ | |
3aeea5b9 JS |
685 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
686 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 687 | } |
02f1175c | 688 | |
ce97a097 JS |
689 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
690 | void __iomem *base_addr) | |
691 | { | |
692 | struct cyclades_port *info; | |
d13549f8 | 693 | struct tty_struct *tty; |
65f76a82 JS |
694 | int index = cinfo->bus_index; |
695 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
696 | |
697 | /* determine the channel & change to that context */ | |
65f76a82 JS |
698 | save_xir = readb(base_addr + (CyMIR << index)); |
699 | channel = save_xir & CyIRChannel; | |
ce97a097 | 700 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
701 | save_car = cyy_readb(info, CyCAR); |
702 | cyy_writeb(info, CyCAR, save_xir); | |
ce97a097 | 703 | |
3aeea5b9 JS |
704 | mdm_change = cyy_readb(info, CyMISR); |
705 | mdm_status = cyy_readb(info, CyMSVR1); | |
ce97a097 | 706 | |
d13549f8 JS |
707 | tty = tty_port_tty_get(&info->port); |
708 | if (!tty) | |
ce97a097 JS |
709 | goto end; |
710 | ||
711 | if (mdm_change & CyANY_DELTA) { | |
712 | /* For statistics only */ | |
713 | if (mdm_change & CyDCD) | |
714 | info->icount.dcd++; | |
715 | if (mdm_change & CyCTS) | |
716 | info->icount.cts++; | |
717 | if (mdm_change & CyDSR) | |
718 | info->icount.dsr++; | |
719 | if (mdm_change & CyRI) | |
720 | info->icount.rng++; | |
721 | ||
bdc04e31 | 722 | wake_up_interruptible(&info->port.delta_msr_wait); |
ce97a097 JS |
723 | } |
724 | ||
77451e53 | 725 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
174e6fe0 JS |
726 | if (mdm_status & CyDCD) |
727 | wake_up_interruptible(&info->port.open_wait); | |
728 | else | |
d13549f8 | 729 | tty_hangup(tty); |
ce97a097 | 730 | } |
77451e53 | 731 | if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { |
d13549f8 | 732 | if (tty->hw_stopped) { |
ce97a097 JS |
733 | if (mdm_status & CyCTS) { |
734 | /* cy_start isn't used | |
735 | because... !!! */ | |
d13549f8 | 736 | tty->hw_stopped = 0; |
3aeea5b9 JS |
737 | cyy_writeb(info, CySRER, |
738 | cyy_readb(info, CySRER) | CyTxRdy); | |
d13549f8 | 739 | tty_wakeup(tty); |
02f1175c | 740 | } |
ce97a097 JS |
741 | } else { |
742 | if (!(mdm_status & CyCTS)) { | |
743 | /* cy_stop isn't used | |
744 | because ... !!! */ | |
d13549f8 | 745 | tty->hw_stopped = 1; |
3aeea5b9 JS |
746 | cyy_writeb(info, CySRER, |
747 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
02f1175c | 748 | } |
e941027f | 749 | } |
e941027f | 750 | } |
ce97a097 JS |
751 | /* if (mdm_change & CyDSR) { |
752 | } | |
753 | if (mdm_change & CyRI) { | |
754 | }*/ | |
d13549f8 | 755 | tty_kref_put(tty); |
ce97a097 JS |
756 | end: |
757 | /* end of service */ | |
3aeea5b9 JS |
758 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
759 | cyy_writeb(info, CyCAR, save_car); | |
e941027f JS |
760 | } |
761 | ||
1da177e4 LT |
762 | /* The real interrupt service routine is called |
763 | whenever the card wants its hand held--chars | |
764 | received, out buffer empty, modem change, etc. | |
765 | */ | |
02f1175c | 766 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 767 | { |
02f1175c | 768 | int status; |
f7429034 | 769 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 770 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 771 | unsigned int chip, too_many, had_work; |
02f1175c | 772 | int index; |
02f1175c | 773 | |
f7429034 | 774 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 775 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
776 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
777 | irq); | |
1da177e4 | 778 | #endif |
02f1175c JS |
779 | return IRQ_NONE; /* spurious interrupt */ |
780 | } | |
781 | ||
782 | card_base_addr = cinfo->base_addr; | |
783 | index = cinfo->bus_index; | |
784 | ||
f1e83c6c JS |
785 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
786 | if (unlikely(card_base_addr == NULL)) | |
787 | return IRQ_HANDLED; | |
788 | ||
02f1175c JS |
789 | /* This loop checks all chips in the card. Make a note whenever |
790 | _any_ chip had some work to do, as this is considered an | |
791 | indication that there will be more to do. Only when no chip | |
792 | has any work does this outermost loop exit. | |
793 | */ | |
794 | do { | |
795 | had_work = 0; | |
796 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
797 | base_addr = cinfo->base_addr + | |
798 | (cy_chip_offset[chip] << index); | |
799 | too_many = 0; | |
db05c3b1 | 800 | while ((status = readb(base_addr + |
02f1175c JS |
801 | (CySVRR << index))) != 0x00) { |
802 | had_work++; | |
803 | /* The purpose of the following test is to ensure that | |
804 | no chip can monopolize the driver. This forces the | |
805 | chips to be checked in a round-robin fashion (after | |
806 | draining each of a bunch (1000) of characters). | |
807 | */ | |
ce97a097 | 808 | if (1000 < too_many++) |
02f1175c | 809 | break; |
1c0a387c | 810 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
811 | if (status & CySRReceive) /* rx intr */ |
812 | cyy_chip_rx(cinfo, chip, base_addr); | |
813 | if (status & CySRTransmit) /* tx intr */ | |
814 | cyy_chip_tx(cinfo, chip, base_addr); | |
815 | if (status & CySRModem) /* modem intr */ | |
816 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 817 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
818 | } |
819 | } | |
820 | } while (had_work); | |
821 | ||
822 | /* clear interrupts */ | |
823 | spin_lock(&cinfo->card_lock); | |
824 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
825 | /* Cy_ClrIntr is 0x1800 */ | |
826 | spin_unlock(&cinfo->card_lock); | |
827 | return IRQ_HANDLED; | |
828 | } /* cyy_interrupt */ | |
1da177e4 | 829 | |
4d768200 JS |
830 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
831 | unsigned int clear) | |
832 | { | |
833 | struct cyclades_card *card = info->card; | |
3aeea5b9 | 834 | int channel = info->line - card->first_line; |
0d348729 | 835 | u32 rts, dtr, msvrr, msvrd; |
4d768200 | 836 | |
4d768200 | 837 | channel &= 0x03; |
4d768200 | 838 | |
0d348729 JS |
839 | if (info->rtsdtr_inv) { |
840 | msvrr = CyMSVR2; | |
841 | msvrd = CyMSVR1; | |
842 | rts = CyDTR; | |
843 | dtr = CyRTS; | |
844 | } else { | |
845 | msvrr = CyMSVR1; | |
846 | msvrd = CyMSVR2; | |
847 | rts = CyRTS; | |
848 | dtr = CyDTR; | |
849 | } | |
4d768200 | 850 | if (set & TIOCM_RTS) { |
3aeea5b9 JS |
851 | cyy_writeb(info, CyCAR, channel); |
852 | cyy_writeb(info, msvrr, rts); | |
4d768200 JS |
853 | } |
854 | if (clear & TIOCM_RTS) { | |
3aeea5b9 JS |
855 | cyy_writeb(info, CyCAR, channel); |
856 | cyy_writeb(info, msvrr, ~rts); | |
4d768200 JS |
857 | } |
858 | if (set & TIOCM_DTR) { | |
3aeea5b9 JS |
859 | cyy_writeb(info, CyCAR, channel); |
860 | cyy_writeb(info, msvrd, dtr); | |
4d768200 JS |
861 | #ifdef CY_DEBUG_DTR |
862 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
863 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
864 | cyy_readb(info, CyMSVR1), |
865 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
866 | #endif |
867 | } | |
868 | if (clear & TIOCM_DTR) { | |
3aeea5b9 JS |
869 | cyy_writeb(info, CyCAR, channel); |
870 | cyy_writeb(info, msvrd, ~dtr); | |
4d768200 JS |
871 | #ifdef CY_DEBUG_DTR |
872 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
873 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
874 | cyy_readb(info, CyMSVR1), |
875 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
876 | #endif |
877 | } | |
878 | } | |
879 | ||
1da177e4 LT |
880 | /***********************************************************/ |
881 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 882 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
883 | /***********************************************************/ |
884 | ||
885 | static int | |
02f1175c | 886 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 887 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 888 | { |
f0eefdc3 | 889 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
890 | unsigned long loc_doorbell; |
891 | ||
97e87f8e | 892 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
893 | if (loc_doorbell) { |
894 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
895 | *channel = readl(&board_ctrl->fwcmd_channel); |
896 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 897 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
898 | return 1; |
899 | } | |
900 | return 0; | |
901 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
902 | |
903 | static int | |
02f1175c | 904 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 905 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 906 | { |
f0eefdc3 | 907 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 908 | __u32 __iomem *pci_doorbell; |
65f76a82 | 909 | unsigned int index; |
02f1175c | 910 | |
2693f485 | 911 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 912 | return -1; |
15ed6cc0 | 913 | |
02f1175c | 914 | index = 0; |
97e87f8e | 915 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 916 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 917 | if (index++ == 1000) |
db05c3b1 | 918 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
919 | udelay(50L); |
920 | } | |
921 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
922 | cy_writel(&board_ctrl->hcmd_param, param); | |
923 | cy_writel(pci_doorbell, (long)cmd); | |
924 | ||
096dcfce | 925 | return 0; |
02f1175c | 926 | } /* cyz_issue_cmd */ |
1da177e4 | 927 | |
f0eefdc3 | 928 | static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 929 | { |
f0eefdc3 | 930 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 931 | struct cyclades_card *cinfo = info->card; |
65f76a82 | 932 | unsigned int char_count; |
02f1175c | 933 | int len; |
1da177e4 | 934 | #ifdef BLOCKMOVE |
ce71b0ff | 935 | unsigned char *buf; |
1da177e4 | 936 | #else |
02f1175c | 937 | char data; |
1da177e4 | 938 | #endif |
ad39c300 | 939 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 940 | |
db05c3b1 JS |
941 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
942 | rx_put = readl(&buf_ctrl->rx_put); | |
943 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
944 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
945 | if (rx_put >= rx_get) |
946 | char_count = rx_put - rx_get; | |
947 | else | |
948 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 949 | |
02f1175c | 950 | if (char_count) { |
1da177e4 | 951 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
952 | info->mon.int_count++; |
953 | info->mon.char_count += char_count; | |
954 | if (char_count > info->mon.char_max) | |
955 | info->mon.char_max = char_count; | |
956 | info->mon.char_last = char_count; | |
1da177e4 | 957 | #endif |
f7429034 | 958 | if (tty == NULL) { |
02f1175c JS |
959 | /* flush received characters */ |
960 | new_rx_get = (new_rx_get + char_count) & | |
961 | (rx_bufsize - 1); | |
962 | info->rflush_count++; | |
963 | } else { | |
1da177e4 | 964 | #ifdef BLOCKMOVE |
02f1175c JS |
965 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
966 | for performance, but because of buffer boundaries, there | |
967 | may be several steps to the operation */ | |
ce71b0ff JS |
968 | while (1) { |
969 | len = tty_prepare_flip_string(tty, &buf, | |
970 | char_count); | |
971 | if (!len) | |
972 | break; | |
973 | ||
974 | len = min_t(unsigned int, min(len, char_count), | |
975 | rx_bufsize - new_rx_get); | |
976 | ||
977 | memcpy_fromio(buf, cinfo->base_addr + | |
978 | rx_bufaddr + new_rx_get, len); | |
979 | ||
980 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 981 | (rx_bufsize - 1); |
ce71b0ff JS |
982 | char_count -= len; |
983 | info->icount.rx += len; | |
984 | info->idle_stats.recv_bytes += len; | |
02f1175c | 985 | } |
1da177e4 | 986 | #else |
02f1175c JS |
987 | len = tty_buffer_request_room(tty, char_count); |
988 | while (len--) { | |
db05c3b1 | 989 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c | 990 | new_rx_get); |
15ed6cc0 AC |
991 | new_rx_get = (new_rx_get + 1) & |
992 | (rx_bufsize - 1); | |
02f1175c JS |
993 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
994 | info->idle_stats.recv_bytes++; | |
995 | info->icount.rx++; | |
996 | } | |
1da177e4 LT |
997 | #endif |
998 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
999 | /* Recalculate the number of chars in the RX buffer and issue |
1000 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1001 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1002 | if (rx_put >= rx_get) |
1003 | char_count = rx_put - rx_get; | |
1004 | else | |
1005 | char_count = rx_put - rx_get + rx_bufsize; | |
65f76a82 | 1006 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
ebafeeff JS |
1007 | !timer_pending(&cyz_rx_full_timer[ |
1008 | info->line])) | |
1009 | mod_timer(&cyz_rx_full_timer[info->line], | |
1010 | jiffies + 1); | |
1da177e4 | 1011 | #endif |
02f1175c JS |
1012 | info->idle_stats.recv_idle = jiffies; |
1013 | tty_schedule_flip(tty); | |
1014 | } | |
1015 | /* Update rx_get */ | |
1016 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1017 | } |
1da177e4 LT |
1018 | } |
1019 | ||
f0eefdc3 | 1020 | static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1021 | { |
f0eefdc3 | 1022 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1023 | struct cyclades_card *cinfo = info->card; |
65f76a82 JS |
1024 | u8 data; |
1025 | unsigned int char_count; | |
1da177e4 | 1026 | #ifdef BLOCKMOVE |
02f1175c | 1027 | int small_count; |
1da177e4 | 1028 | #endif |
ad39c300 | 1029 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1030 | |
02f1175c JS |
1031 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1032 | return; | |
1da177e4 | 1033 | |
db05c3b1 JS |
1034 | tx_get = readl(&buf_ctrl->tx_get); |
1035 | tx_put = readl(&buf_ctrl->tx_put); | |
1036 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1037 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1038 | if (tx_put >= tx_get) |
1039 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1040 | else | |
1041 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1042 | |
02f1175c | 1043 | if (char_count) { |
1da177e4 | 1044 | |
f7429034 | 1045 | if (tty == NULL) |
02f1175c | 1046 | goto ztxdone; |
1da177e4 | 1047 | |
02f1175c JS |
1048 | if (info->x_char) { /* send special char */ |
1049 | data = info->x_char; | |
1da177e4 | 1050 | |
02f1175c JS |
1051 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1052 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1053 | info->x_char = 0; | |
1054 | char_count--; | |
1055 | info->icount.tx++; | |
02f1175c | 1056 | } |
1da177e4 | 1057 | #ifdef BLOCKMOVE |
02f1175c JS |
1058 | while (0 < (small_count = min_t(unsigned int, |
1059 | tx_bufsize - tx_put, min_t(unsigned int, | |
1060 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1061 | min_t(unsigned int, info->xmit_cnt, | |
1062 | char_count))))) { | |
1063 | ||
1064 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1065 | tx_put), | |
77451e53 | 1066 | &info->port.xmit_buf[info->xmit_tail], |
02f1175c JS |
1067 | small_count); |
1068 | ||
1069 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1070 | char_count -= small_count; | |
1071 | info->icount.tx += small_count; | |
1072 | info->xmit_cnt -= small_count; | |
1073 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1074 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1075 | } |
1da177e4 | 1076 | #else |
02f1175c | 1077 | while (info->xmit_cnt && char_count) { |
77451e53 | 1078 | data = info->port.xmit_buf[info->xmit_tail]; |
02f1175c JS |
1079 | info->xmit_cnt--; |
1080 | info->xmit_tail = (info->xmit_tail + 1) & | |
1081 | (SERIAL_XMIT_SIZE - 1); | |
1082 | ||
1083 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1084 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1085 | char_count--; | |
1086 | info->icount.tx++; | |
02f1175c | 1087 | } |
1da177e4 | 1088 | #endif |
ebafeeff | 1089 | tty_wakeup(tty); |
7fa57a0c | 1090 | ztxdone: |
02f1175c JS |
1091 | /* Update tx_put */ |
1092 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1093 | } |
1da177e4 LT |
1094 | } |
1095 | ||
02f1175c | 1096 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1097 | { |
f0eefdc3 | 1098 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
1099 | struct tty_struct *tty; |
1100 | struct cyclades_port *info; | |
101b8159 | 1101 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1102 | __u8 cmd; |
02f1175c JS |
1103 | int special_count; |
1104 | int delta_count; | |
1105 | ||
db05c3b1 | 1106 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1107 | |
1108 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1109 | special_count = 0; | |
1110 | delta_count = 0; | |
dd025c0c | 1111 | info = &cinfo->ports[channel]; |
d13549f8 | 1112 | tty = tty_port_tty_get(&info->port); |
15ed6cc0 | 1113 | if (tty == NULL) |
02f1175c | 1114 | continue; |
f7429034 | 1115 | |
02f1175c JS |
1116 | switch (cmd) { |
1117 | case C_CM_PR_ERROR: | |
1118 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1119 | info->icount.rx++; | |
1120 | special_count++; | |
1121 | break; | |
1122 | case C_CM_FR_ERROR: | |
1123 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1124 | info->icount.rx++; | |
1125 | special_count++; | |
1126 | break; | |
1127 | case C_CM_RXBRK: | |
1128 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1129 | info->icount.rx++; | |
1130 | special_count++; | |
1131 | break; | |
1132 | case C_CM_MDCD: | |
1133 | info->icount.dcd++; | |
1134 | delta_count++; | |
77451e53 | 1135 | if (info->port.flags & ASYNC_CHECK_CD) { |
f0eefdc3 JS |
1136 | u32 dcd = fw_ver > 241 ? param : |
1137 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1138 | if (dcd & C_RS_DCD) |
77451e53 | 1139 | wake_up_interruptible(&info->port.open_wait); |
174e6fe0 | 1140 | else |
d13549f8 | 1141 | tty_hangup(tty); |
02f1175c JS |
1142 | } |
1143 | break; | |
1144 | case C_CM_MCTS: | |
1145 | info->icount.cts++; | |
1146 | delta_count++; | |
1147 | break; | |
1148 | case C_CM_MRI: | |
1149 | info->icount.rng++; | |
1150 | delta_count++; | |
1151 | break; | |
1152 | case C_CM_MDSR: | |
1153 | info->icount.dsr++; | |
1154 | delta_count++; | |
1155 | break; | |
1da177e4 | 1156 | #ifdef Z_WAKE |
02f1175c | 1157 | case C_CM_IOCTLW: |
ebafeeff | 1158 | complete(&info->shutdown_wait); |
02f1175c | 1159 | break; |
1da177e4 LT |
1160 | #endif |
1161 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1162 | case C_CM_RXHIWM: |
1163 | case C_CM_RXNNDT: | |
1164 | case C_CM_INTBACK2: | |
1165 | /* Reception Interrupt */ | |
1da177e4 | 1166 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1167 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1168 | "port %ld\n", info->card, channel); | |
1da177e4 | 1169 | #endif |
f0eefdc3 | 1170 | cyz_handle_rx(info, tty); |
02f1175c JS |
1171 | break; |
1172 | case C_CM_TXBEMPTY: | |
1173 | case C_CM_TXLOWWM: | |
1174 | case C_CM_INTBACK: | |
1175 | /* Transmission Interrupt */ | |
1da177e4 | 1176 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1177 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1178 | "port %ld\n", info->card, channel); | |
1da177e4 | 1179 | #endif |
f0eefdc3 | 1180 | cyz_handle_tx(info, tty); |
02f1175c JS |
1181 | break; |
1182 | #endif /* CONFIG_CYZ_INTR */ | |
1183 | case C_CM_FATAL: | |
1184 | /* should do something with this !!! */ | |
1185 | break; | |
1186 | default: | |
1187 | break; | |
1188 | } | |
1189 | if (delta_count) | |
bdc04e31 | 1190 | wake_up_interruptible(&info->port.delta_msr_wait); |
02f1175c JS |
1191 | if (special_count) |
1192 | tty_schedule_flip(tty); | |
d13549f8 | 1193 | tty_kref_put(tty); |
1da177e4 | 1194 | } |
1da177e4 LT |
1195 | } |
1196 | ||
1197 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1198 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1199 | { |
f7429034 | 1200 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1201 | |
2693f485 | 1202 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1203 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1204 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1205 | "(IRQ%d).\n", irq); | |
1da177e4 | 1206 | #endif |
02f1175c JS |
1207 | return IRQ_NONE; |
1208 | } | |
1da177e4 | 1209 | |
02f1175c JS |
1210 | /* Handle the interrupts */ |
1211 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1212 | |
02f1175c JS |
1213 | return IRQ_HANDLED; |
1214 | } /* cyz_interrupt */ | |
1da177e4 | 1215 | |
02f1175c | 1216 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1217 | { |
02f1175c | 1218 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1219 | struct cyclades_card *card = info->card; |
02f1175c | 1220 | int retval; |
875b206b | 1221 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1222 | unsigned long flags; |
1223 | ||
9fa1b3b1 | 1224 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1225 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1226 | if (retval != 0) { |
21719191 | 1227 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1228 | info->line, retval); |
1229 | } | |
9fa1b3b1 | 1230 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1231 | } |
1232 | ||
02f1175c | 1233 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1234 | |
02f1175c | 1235 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1236 | { |
02f1175c JS |
1237 | struct cyclades_card *cinfo; |
1238 | struct cyclades_port *info; | |
b7050906 | 1239 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1240 | unsigned int port, card; |
1da177e4 | 1241 | |
02f1175c JS |
1242 | for (card = 0; card < NR_CARDS; card++) { |
1243 | cinfo = &cy_card[card]; | |
1244 | ||
2693f485 | 1245 | if (!cy_is_Z(cinfo)) |
02f1175c | 1246 | continue; |
2693f485 | 1247 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1248 | continue; |
1249 | ||
1da177e4 | 1250 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1251 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1252 | cinfo->intr_enabled = 1; |
1253 | continue; | |
1254 | } | |
1da177e4 | 1255 | |
02f1175c | 1256 | cyz_handle_cmd(cinfo); |
1da177e4 | 1257 | |
02f1175c | 1258 | for (port = 0; port < cinfo->nports; port++) { |
d13549f8 JS |
1259 | struct tty_struct *tty; |
1260 | ||
dd025c0c | 1261 | info = &cinfo->ports[port]; |
d13549f8 JS |
1262 | tty = tty_port_tty_get(&info->port); |
1263 | /* OK to pass NULL to the handle functions below. | |
1264 | They need to drop the data in that case. */ | |
1265 | ||
02f1175c | 1266 | if (!info->throttle) |
f0eefdc3 JS |
1267 | cyz_handle_rx(info, tty); |
1268 | cyz_handle_tx(info, tty); | |
d13549f8 | 1269 | tty_kref_put(tty); |
02f1175c JS |
1270 | } |
1271 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1272 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1273 | } |
b7050906 | 1274 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1275 | } /* cyz_poll */ |
1da177e4 | 1276 | |
02f1175c | 1277 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1278 | |
1279 | /********** End of block of Cyclades-Z specific code *********/ | |
1280 | /***********************************************************/ | |
1281 | ||
1da177e4 LT |
1282 | /* This is called whenever a port becomes active; |
1283 | interrupts are enabled and DTR & RTS are turned on. | |
1284 | */ | |
d13549f8 | 1285 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1286 | { |
875b206b | 1287 | struct cyclades_card *card; |
02f1175c JS |
1288 | unsigned long flags; |
1289 | int retval = 0; | |
cc7fdf49 | 1290 | int channel; |
02f1175c | 1291 | unsigned long page; |
1da177e4 | 1292 | |
02f1175c | 1293 | card = info->card; |
875b206b | 1294 | channel = info->line - card->first_line; |
1da177e4 | 1295 | |
02f1175c JS |
1296 | page = get_zeroed_page(GFP_KERNEL); |
1297 | if (!page) | |
1298 | return -ENOMEM; | |
1da177e4 | 1299 | |
9fa1b3b1 | 1300 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1301 | |
cc7fdf49 | 1302 | if (info->port.flags & ASYNC_INITIALIZED) |
02f1175c | 1303 | goto errout; |
1da177e4 | 1304 | |
02f1175c | 1305 | if (!info->type) { |
d13549f8 | 1306 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1307 | goto errout; |
1308 | } | |
1da177e4 | 1309 | |
77451e53 | 1310 | if (info->port.xmit_buf) |
02f1175c JS |
1311 | free_page(page); |
1312 | else | |
77451e53 | 1313 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1314 | |
9fa1b3b1 | 1315 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1316 | |
d13549f8 | 1317 | cy_set_line_char(info, tty); |
1da177e4 | 1318 | |
2693f485 | 1319 | if (!cy_is_Z(card)) { |
02f1175c | 1320 | channel &= 0x03; |
1da177e4 | 1321 | |
9fa1b3b1 | 1322 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1323 | |
3aeea5b9 | 1324 | cyy_writeb(info, CyCAR, channel); |
1da177e4 | 1325 | |
3aeea5b9 | 1326 | cyy_writeb(info, CyRTPR, |
02f1175c JS |
1327 | (info->default_timeout ? info->default_timeout : 0x02)); |
1328 | /* 10ms rx timeout */ | |
1da177e4 | 1329 | |
3aeea5b9 | 1330 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
1da177e4 | 1331 | |
4d768200 | 1332 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1333 | |
3aeea5b9 | 1334 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
02f1175c | 1335 | } else { |
f0eefdc3 | 1336 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1337 | |
2693f485 | 1338 | if (!cyz_is_loaded(card)) |
02f1175c | 1339 | return -ENODEV; |
1da177e4 | 1340 | |
1da177e4 | 1341 | #ifdef CY_DEBUG_OPEN |
21719191 | 1342 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1343 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1344 | #endif |
9fa1b3b1 | 1345 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1346 | |
f0eefdc3 | 1347 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1348 | #ifdef Z_WAKE |
1349 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1350 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1351 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1352 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1353 | #else |
f0eefdc3 | 1354 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1355 | C_IN_IOCTLW | C_IN_MDCD); |
1356 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1357 | #else |
1358 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1359 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1360 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1361 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1362 | #else |
f0eefdc3 | 1363 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1364 | #endif /* CONFIG_CYZ_INTR */ |
1365 | #endif /* Z_WAKE */ | |
1366 | ||
875b206b | 1367 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1368 | if (retval != 0) { |
21719191 JS |
1369 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1370 | "%x\n", info->line, retval); | |
02f1175c | 1371 | } |
1da177e4 | 1372 | |
02f1175c | 1373 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1374 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1375 | if (retval != 0) { |
21719191 JS |
1376 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1377 | "%x\n", info->line, retval); | |
02f1175c | 1378 | } |
1da177e4 | 1379 | |
02f1175c JS |
1380 | /* set timeout !!! */ |
1381 | /* set RTS and DTR !!! */ | |
4d768200 | 1382 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1383 | |
02f1175c | 1384 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1385 | } |
02f1175c | 1386 | |
cc7fdf49 | 1387 | info->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1388 | |
cc7fdf49 JS |
1389 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1390 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1391 | info->breakon = info->breakoff = 0; | |
1392 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1393 | info->idle_stats.in_use = | |
1394 | info->idle_stats.recv_idle = | |
1395 | info->idle_stats.xmit_idle = jiffies; | |
1396 | ||
1397 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1398 | |
1399 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1400 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1401 | #endif |
1402 | return 0; | |
1403 | ||
1404 | errout: | |
9fa1b3b1 | 1405 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1406 | free_page(page); |
1da177e4 | 1407 | return retval; |
02f1175c | 1408 | } /* startup */ |
1da177e4 | 1409 | |
02f1175c | 1410 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1411 | { |
3aeea5b9 | 1412 | struct cyclades_card *card = info->card; |
02f1175c | 1413 | unsigned long flags; |
3aeea5b9 | 1414 | int channel = info->line - card->first_line; |
1da177e4 | 1415 | |
2693f485 | 1416 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1417 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
1418 | cyy_writeb(info, CyCAR, channel & 0x03); |
1419 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 1420 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1421 | } else { |
1da177e4 | 1422 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1423 | int retval; |
1da177e4 | 1424 | |
9fa1b3b1 | 1425 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1426 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1427 | if (retval != 0) { |
21719191 JS |
1428 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1429 | "%x\n", info->line, retval); | |
02f1175c | 1430 | } |
9fa1b3b1 | 1431 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1432 | #else /* CONFIG_CYZ_INTR */ |
1433 | /* Don't have to do anything at this time */ | |
1434 | #endif /* CONFIG_CYZ_INTR */ | |
1435 | } | |
1436 | } /* start_xmit */ | |
1da177e4 LT |
1437 | |
1438 | /* | |
1439 | * This routine shuts down a serial port; interrupts are disabled, | |
1440 | * and DTR is dropped if the hangup on close termio flag is on. | |
1441 | */ | |
d13549f8 | 1442 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1443 | { |
875b206b | 1444 | struct cyclades_card *card; |
02f1175c | 1445 | unsigned long flags; |
02f1175c | 1446 | |
77451e53 | 1447 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
02f1175c | 1448 | return; |
02f1175c JS |
1449 | |
1450 | card = info->card; | |
2693f485 | 1451 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1452 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1453 | |
1454 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
bdc04e31 | 1455 | wake_up_interruptible(&info->port.delta_msr_wait); |
1da177e4 | 1456 | |
77451e53 | 1457 | if (info->port.xmit_buf) { |
02f1175c | 1458 | unsigned char *temp; |
77451e53 AC |
1459 | temp = info->port.xmit_buf; |
1460 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1461 | free_page((unsigned long)temp); |
1462 | } | |
4d768200 JS |
1463 | if (tty->termios->c_cflag & HUPCL) |
1464 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); | |
1465 | ||
3aeea5b9 | 1466 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
02f1175c JS |
1467 | /* it may be appropriate to clear _XMIT at |
1468 | some later date (after testing)!!! */ | |
1469 | ||
d13549f8 | 1470 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1471 | info->port.flags &= ~ASYNC_INITIALIZED; |
9fa1b3b1 | 1472 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1473 | } else { |
1da177e4 | 1474 | #ifdef CY_DEBUG_OPEN |
0e7f4194 | 1475 | int channel = info->line - card->first_line; |
21719191 | 1476 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1477 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1478 | #endif |
1479 | ||
2693f485 | 1480 | if (!cyz_is_loaded(card)) |
02f1175c | 1481 | return; |
1da177e4 | 1482 | |
9fa1b3b1 | 1483 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1484 | |
77451e53 | 1485 | if (info->port.xmit_buf) { |
02f1175c | 1486 | unsigned char *temp; |
77451e53 AC |
1487 | temp = info->port.xmit_buf; |
1488 | info->port.xmit_buf = NULL; | |
02f1175c | 1489 | free_page((unsigned long)temp); |
1da177e4 | 1490 | } |
02f1175c | 1491 | |
4d768200 JS |
1492 | if (tty->termios->c_cflag & HUPCL) |
1493 | tty_port_lower_dtr_rts(&info->port); | |
1da177e4 | 1494 | |
d13549f8 | 1495 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1496 | info->port.flags &= ~ASYNC_INITIALIZED; |
02f1175c | 1497 | |
9fa1b3b1 | 1498 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1499 | } |
1da177e4 LT |
1500 | |
1501 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1502 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1503 | #endif |
02f1175c | 1504 | } /* shutdown */ |
1da177e4 LT |
1505 | |
1506 | /* | |
1507 | * ------------------------------------------------------------ | |
1508 | * cy_open() and friends | |
1509 | * ------------------------------------------------------------ | |
1510 | */ | |
1511 | ||
1da177e4 LT |
1512 | /* |
1513 | * This routine is called whenever a serial port is opened. It | |
1514 | * performs the serial-specific initialization for the tty structure. | |
1515 | */ | |
02f1175c | 1516 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1517 | { |
02f1175c | 1518 | struct cyclades_port *info; |
65f76a82 JS |
1519 | unsigned int i, line; |
1520 | int retval; | |
1da177e4 | 1521 | |
02f1175c | 1522 | line = tty->index; |
15ed6cc0 | 1523 | if (tty->index < 0 || NR_PORTS <= line) |
02f1175c | 1524 | return -ENODEV; |
15ed6cc0 | 1525 | |
dd025c0c JS |
1526 | for (i = 0; i < NR_CARDS; i++) |
1527 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1528 | line >= cy_card[i].first_line) | |
1529 | break; | |
1530 | if (i >= NR_CARDS) | |
1531 | return -ENODEV; | |
1532 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1533 | if (info->line < 0) |
02f1175c | 1534 | return -ENODEV; |
1da177e4 | 1535 | |
02f1175c JS |
1536 | /* If the card's firmware hasn't been loaded, |
1537 | treat it as absent from the system. This | |
1538 | will make the user pay attention. | |
1539 | */ | |
2693f485 | 1540 | if (cy_is_Z(info->card)) { |
875b206b | 1541 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1542 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1543 | ||
2693f485 JS |
1544 | if (!cyz_is_loaded(cinfo)) { |
1545 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1546 | readl(&firm_id->signature) == |
1547 | ZFIRM_HLT) { | |
21719191 JS |
1548 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1549 | "need an external power supply for " | |
1550 | "this number of ports.\nFirmware " | |
1551 | "halted.\n"); | |
02f1175c | 1552 | } else { |
21719191 JS |
1553 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1554 | "yet loaded\n"); | |
02f1175c JS |
1555 | } |
1556 | return -ENODEV; | |
1557 | } | |
1558 | #ifdef CONFIG_CYZ_INTR | |
1559 | else { | |
1560 | /* In case this Z board is operating in interrupt mode, its | |
1561 | interrupts should be enabled as soon as the first open | |
1562 | happens to one of its ports. */ | |
1563 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1564 | u16 intr; |
02f1175c | 1565 | |
02f1175c | 1566 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1567 | intr = readw(&cinfo->ctl_addr.p9060-> |
1568 | intr_ctrl_stat) | 0x0900; | |
1569 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1570 | intr_ctrl_stat, intr); | |
02f1175c JS |
1571 | /* Enable interrupts on the FW */ |
1572 | retval = cyz_issue_cmd(cinfo, 0, | |
1573 | C_CM_IRQ_ENBL, 0L); | |
1574 | if (retval != 0) { | |
21719191 JS |
1575 | printk(KERN_ERR "cyc:IRQ enable retval " |
1576 | "was %x\n", retval); | |
02f1175c | 1577 | } |
02f1175c JS |
1578 | cinfo->intr_enabled = 1; |
1579 | } | |
1da177e4 | 1580 | } |
02f1175c JS |
1581 | #endif /* CONFIG_CYZ_INTR */ |
1582 | /* Make sure this Z port really exists in hardware */ | |
1583 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1584 | return -ENODEV; | |
1da177e4 | 1585 | } |
1da177e4 | 1586 | #ifdef CY_DEBUG_OTHER |
21719191 | 1587 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1588 | #endif |
02f1175c | 1589 | tty->driver_data = info; |
15ed6cc0 | 1590 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1591 | return -ENODEV; |
15ed6cc0 | 1592 | |
1da177e4 | 1593 | #ifdef CY_DEBUG_OPEN |
21719191 | 1594 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1595 | info->port.count); |
1da177e4 | 1596 | #endif |
77451e53 | 1597 | info->port.count++; |
1da177e4 | 1598 | #ifdef CY_DEBUG_COUNT |
21719191 | 1599 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1600 | current->pid, info->port.count); |
1da177e4 | 1601 | #endif |
1da177e4 | 1602 | |
02f1175c JS |
1603 | /* |
1604 | * If the port is the middle of closing, bail out now | |
1605 | */ | |
77451e53 | 1606 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
be1bc288 | 1607 | wait_event_interruptible_tty(info->port.close_wait, |
77451e53 AC |
1608 | !(info->port.flags & ASYNC_CLOSING)); |
1609 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; | |
02f1175c | 1610 | } |
1da177e4 | 1611 | |
02f1175c JS |
1612 | /* |
1613 | * Start up serial port | |
1614 | */ | |
d13549f8 | 1615 | retval = cy_startup(info, tty); |
15ed6cc0 | 1616 | if (retval) |
02f1175c | 1617 | return retval; |
1da177e4 | 1618 | |
f0737579 | 1619 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1620 | if (retval) { |
1da177e4 | 1621 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1622 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1623 | "with %d\n", retval); | |
1da177e4 | 1624 | #endif |
02f1175c JS |
1625 | return retval; |
1626 | } | |
1da177e4 | 1627 | |
02f1175c | 1628 | info->throttle = 0; |
d13549f8 | 1629 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1630 | |
02f1175c | 1631 | #ifdef CY_DEBUG_OPEN |
21719191 | 1632 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1633 | #endif |
1634 | return 0; | |
1635 | } /* cy_open */ | |
1da177e4 LT |
1636 | |
1637 | /* | |
1638 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1639 | */ | |
02f1175c | 1640 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1641 | { |
875b206b | 1642 | struct cyclades_card *card; |
cab9bdd1 | 1643 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1644 | unsigned long orig_jiffies; |
1645 | int char_time; | |
1646 | ||
1647 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1648 | return; | |
1649 | ||
1650 | if (info->xmit_fifo_size == 0) | |
1651 | return; /* Just in case.... */ | |
1da177e4 | 1652 | |
02f1175c JS |
1653 | orig_jiffies = jiffies; |
1654 | /* | |
1655 | * Set the check interval to be 1/5 of the estimated time to | |
1656 | * send a single character, and make it at least 1. The check | |
1657 | * interval should also be less than the timeout. | |
1658 | * | |
1659 | * Note: we have to use pretty tight timings here to satisfy | |
1660 | * the NIST-PCTS. | |
1661 | */ | |
1662 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1663 | char_time = char_time / 5; | |
1664 | if (char_time <= 0) | |
1665 | char_time = 1; | |
1666 | if (timeout < 0) | |
1667 | timeout = 0; | |
1668 | if (timeout) | |
1669 | char_time = min(char_time, timeout); | |
1670 | /* | |
1671 | * If the transmitter hasn't cleared in twice the approximate | |
1672 | * amount of time to send the entire FIFO, it probably won't | |
1673 | * ever clear. This assumes the UART isn't doing flow | |
1674 | * control, which is currently the case. Hence, if it ever | |
1675 | * takes longer than info->timeout, this is probably due to a | |
1676 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1677 | * 2*info->timeout. | |
1678 | */ | |
1679 | if (!timeout || timeout > 2 * info->timeout) | |
1680 | timeout = 2 * info->timeout; | |
1da177e4 | 1681 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
1682 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
1683 | timeout, char_time, jiffies); | |
1da177e4 | 1684 | #endif |
02f1175c | 1685 | card = info->card; |
2693f485 | 1686 | if (!cy_is_Z(card)) { |
3aeea5b9 | 1687 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
1da177e4 | 1688 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1689 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 1690 | #endif |
02f1175c JS |
1691 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1692 | break; | |
1693 | if (timeout && time_after(jiffies, orig_jiffies + | |
1694 | timeout)) | |
1695 | break; | |
1696 | } | |
1da177e4 | 1697 | } |
02f1175c JS |
1698 | /* Run one more char cycle */ |
1699 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 | 1700 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1701 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
1702 | #endif |
1703 | } | |
1704 | ||
978e595f AC |
1705 | static void cy_flush_buffer(struct tty_struct *tty) |
1706 | { | |
1707 | struct cyclades_port *info = tty->driver_data; | |
1708 | struct cyclades_card *card; | |
1709 | int channel, retval; | |
1710 | unsigned long flags; | |
1711 | ||
1712 | #ifdef CY_DEBUG_IO | |
1713 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1714 | #endif | |
1715 | ||
1716 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1717 | return; | |
1718 | ||
1719 | card = info->card; | |
1720 | channel = info->line - card->first_line; | |
1721 | ||
1722 | spin_lock_irqsave(&card->card_lock, flags); | |
1723 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1724 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1725 | ||
2693f485 | 1726 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1727 | buffers as well */ |
1728 | spin_lock_irqsave(&card->card_lock, flags); | |
1729 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1730 | if (retval != 0) { | |
1731 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1732 | "was %x\n", info->line, retval); | |
1733 | } | |
1734 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1735 | } | |
1736 | tty_wakeup(tty); | |
1737 | } /* cy_flush_buffer */ | |
1738 | ||
1739 | ||
e936ffd5 | 1740 | static void cy_do_close(struct tty_port *port) |
1da177e4 | 1741 | { |
e936ffd5 AC |
1742 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
1743 | port); | |
9fa1b3b1 | 1744 | struct cyclades_card *card; |
02f1175c | 1745 | unsigned long flags; |
3aeea5b9 | 1746 | int channel; |
1da177e4 | 1747 | |
9fa1b3b1 | 1748 | card = info->card; |
3aeea5b9 | 1749 | channel = info->line - card->first_line; |
9fa1b3b1 | 1750 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1751 | |
2693f485 | 1752 | if (!cy_is_Z(card)) { |
02f1175c | 1753 | /* Stop accepting input */ |
3aeea5b9 JS |
1754 | cyy_writeb(info, CyCAR, channel & 0x03); |
1755 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); | |
77451e53 | 1756 | if (info->port.flags & ASYNC_INITIALIZED) { |
15ed6cc0 AC |
1757 | /* Waiting for on-board buffers to be empty before |
1758 | closing the port */ | |
9fa1b3b1 | 1759 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 | 1760 | cy_wait_until_sent(port->tty, info->timeout); |
9fa1b3b1 | 1761 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1762 | } |
1763 | } else { | |
1764 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1765 | /* Waiting for on-board buffers to be empty before closing |
1766 | the port */ | |
f0eefdc3 | 1767 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
1768 | int retval; |
1769 | ||
f0eefdc3 | 1770 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1771 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1772 | if (retval != 0) { |
21719191 JS |
1773 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1774 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1775 | } |
9fa1b3b1 | 1776 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1777 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1778 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1779 | } |
1da177e4 | 1780 | #endif |
02f1175c | 1781 | } |
9fa1b3b1 | 1782 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 AC |
1783 | cy_shutdown(info, port->tty); |
1784 | } | |
1da177e4 | 1785 | |
e936ffd5 AC |
1786 | /* |
1787 | * This routine is called when a particular tty device is closed. | |
1788 | */ | |
1789 | static void cy_close(struct tty_struct *tty, struct file *filp) | |
1790 | { | |
1791 | struct cyclades_port *info = tty->driver_data; | |
1792 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) | |
1793 | return; | |
1794 | tty_port_close(&info->port, tty, filp); | |
02f1175c | 1795 | } /* cy_close */ |
1da177e4 LT |
1796 | |
1797 | /* This routine gets called when tty_write has put something into | |
1798 | * the write_queue. The characters may come from user space or | |
1799 | * kernel space. | |
1800 | * | |
1801 | * This routine will return the number of characters actually | |
1802 | * accepted for writing. | |
1803 | * | |
1804 | * If the port is not already transmitting stuff, start it off by | |
1805 | * enabling interrupts. The interrupt service routine will then | |
1806 | * ensure that the characters are sent. | |
1807 | * If the port is already active, there is no need to kick it. | |
1808 | * | |
1809 | */ | |
02f1175c | 1810 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1811 | { |
cab9bdd1 | 1812 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1813 | unsigned long flags; |
1814 | int c, ret = 0; | |
1da177e4 LT |
1815 | |
1816 | #ifdef CY_DEBUG_IO | |
21719191 | 1817 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1818 | #endif |
1819 | ||
15ed6cc0 | 1820 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1821 | return 0; |
1da177e4 | 1822 | |
77451e53 | 1823 | if (!info->port.xmit_buf) |
02f1175c | 1824 | return 0; |
1da177e4 | 1825 | |
9fa1b3b1 | 1826 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1827 | while (1) { |
1a4e2351 HH |
1828 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1829 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1830 | |
1831 | if (c <= 0) | |
1832 | break; | |
1833 | ||
77451e53 | 1834 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1835 | info->xmit_head = (info->xmit_head + c) & |
1836 | (SERIAL_XMIT_SIZE - 1); | |
1837 | info->xmit_cnt += c; | |
1838 | buf += c; | |
1839 | count -= c; | |
1840 | ret += c; | |
1841 | } | |
9fa1b3b1 | 1842 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1843 | |
1844 | info->idle_stats.xmit_bytes += ret; | |
1845 | info->idle_stats.xmit_idle = jiffies; | |
1846 | ||
15ed6cc0 | 1847 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1848 | start_xmit(info); |
15ed6cc0 | 1849 | |
02f1175c JS |
1850 | return ret; |
1851 | } /* cy_write */ | |
1da177e4 LT |
1852 | |
1853 | /* | |
1854 | * This routine is called by the kernel to write a single | |
1855 | * character to the tty device. If the kernel uses this routine, | |
1856 | * it must call the flush_chars() routine (if defined) when it is | |
1857 | * done stuffing characters into the driver. If there is no room | |
1858 | * in the queue, the character is ignored. | |
1859 | */ | |
76b25a55 | 1860 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1861 | { |
cab9bdd1 | 1862 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1863 | unsigned long flags; |
1da177e4 LT |
1864 | |
1865 | #ifdef CY_DEBUG_IO | |
21719191 | 1866 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1867 | #endif |
1868 | ||
02f1175c | 1869 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1870 | return 0; |
1da177e4 | 1871 | |
77451e53 | 1872 | if (!info->port.xmit_buf) |
76b25a55 | 1873 | return 0; |
1da177e4 | 1874 | |
9fa1b3b1 | 1875 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1876 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1877 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1878 | return 0; |
02f1175c | 1879 | } |
1da177e4 | 1880 | |
77451e53 | 1881 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1882 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1883 | info->xmit_cnt++; | |
1da177e4 LT |
1884 | info->idle_stats.xmit_bytes++; |
1885 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1886 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1887 | return 1; |
02f1175c | 1888 | } /* cy_put_char */ |
1da177e4 LT |
1889 | |
1890 | /* | |
1891 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1892 | * series of characters to the tty device using put_char(). |
1da177e4 | 1893 | */ |
02f1175c | 1894 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1895 | { |
cab9bdd1 | 1896 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1897 | |
1da177e4 | 1898 | #ifdef CY_DEBUG_IO |
21719191 | 1899 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1900 | #endif |
1901 | ||
02f1175c JS |
1902 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1903 | return; | |
1da177e4 | 1904 | |
02f1175c | 1905 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1906 | !info->port.xmit_buf) |
02f1175c | 1907 | return; |
1da177e4 | 1908 | |
02f1175c JS |
1909 | start_xmit(info); |
1910 | } /* cy_flush_chars */ | |
1da177e4 LT |
1911 | |
1912 | /* | |
1913 | * This routine returns the numbers of characters the tty driver | |
1914 | * will accept for queuing to be written. This number is subject | |
1915 | * to change as output buffers get emptied, or if the output flow | |
1916 | * control is activated. | |
1917 | */ | |
02f1175c | 1918 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1919 | { |
cab9bdd1 | 1920 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1921 | int ret; |
1922 | ||
1da177e4 | 1923 | #ifdef CY_DEBUG_IO |
21719191 | 1924 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1925 | #endif |
1926 | ||
02f1175c JS |
1927 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1928 | return 0; | |
1929 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1930 | if (ret < 0) | |
1931 | ret = 0; | |
1932 | return ret; | |
1933 | } /* cy_write_room */ | |
1da177e4 | 1934 | |
02f1175c | 1935 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1936 | { |
cab9bdd1 | 1937 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1938 | |
02f1175c JS |
1939 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1940 | return 0; | |
1941 | ||
1da177e4 | 1942 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 1943 | if (!cy_is_Z(info->card)) { |
02f1175c | 1944 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 1945 | #ifdef CY_DEBUG_IO |
21719191 JS |
1946 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1947 | info->line, info->xmit_cnt); | |
1da177e4 | 1948 | #endif |
02f1175c | 1949 | return info->xmit_cnt; |
1da177e4 | 1950 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 1951 | } else { |
f0eefdc3 | 1952 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 1953 | int char_count; |
ad39c300 | 1954 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 1955 | |
db05c3b1 JS |
1956 | tx_get = readl(&buf_ctrl->tx_get); |
1957 | tx_put = readl(&buf_ctrl->tx_put); | |
1958 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
1959 | if (tx_put >= tx_get) |
1960 | char_count = tx_put - tx_get; | |
1961 | else | |
1962 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 1963 | #ifdef CY_DEBUG_IO |
21719191 JS |
1964 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1965 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 1966 | #endif |
096dcfce | 1967 | return info->xmit_cnt + char_count; |
02f1175c JS |
1968 | } |
1969 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1970 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
1971 | |
1972 | /* | |
1973 | * ------------------------------------------------------------ | |
1974 | * cy_ioctl() and friends | |
1975 | * ------------------------------------------------------------ | |
1976 | */ | |
1977 | ||
1a86b5e3 | 1978 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 1979 | { |
02f1175c | 1980 | int co, co_val, bpr; |
1a86b5e3 | 1981 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 1982 | 25000000); |
1da177e4 | 1983 | |
02f1175c JS |
1984 | if (baud == 0) { |
1985 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
1986 | return; | |
1987 | } | |
1da177e4 | 1988 | |
02f1175c JS |
1989 | /* determine which prescaler to use */ |
1990 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
1991 | if (cy_clock / co_val / baud > 63) | |
1992 | break; | |
1993 | } | |
1da177e4 | 1994 | |
02f1175c JS |
1995 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
1996 | if (bpr > 255) | |
1997 | bpr = 255; | |
1da177e4 | 1998 | |
02f1175c JS |
1999 | info->tbpr = info->rbpr = bpr; |
2000 | info->tco = info->rco = co; | |
1da177e4 LT |
2001 | } |
2002 | ||
2003 | /* | |
2004 | * This routine finds or computes the various line characteristics. | |
2005 | * It used to be called config_setup | |
2006 | */ | |
d13549f8 | 2007 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 2008 | { |
875b206b | 2009 | struct cyclades_card *card; |
02f1175c | 2010 | unsigned long flags; |
3aeea5b9 | 2011 | int channel; |
02f1175c | 2012 | unsigned cflag, iflag; |
02f1175c JS |
2013 | int baud, baud_rate = 0; |
2014 | int i; | |
2015 | ||
d13549f8 | 2016 | if (!tty->termios) /* XXX can this happen at all? */ |
02f1175c | 2017 | return; |
15ed6cc0 AC |
2018 | |
2019 | if (info->line == -1) | |
02f1175c | 2020 | return; |
15ed6cc0 | 2021 | |
d13549f8 JS |
2022 | cflag = tty->termios->c_cflag; |
2023 | iflag = tty->termios->c_iflag; | |
1da177e4 | 2024 | |
02f1175c JS |
2025 | /* |
2026 | * Set up the tty->alt_speed kludge | |
2027 | */ | |
d13549f8 JS |
2028 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
2029 | tty->alt_speed = 57600; | |
2030 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2031 | tty->alt_speed = 115200; | |
2032 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2033 | tty->alt_speed = 230400; | |
2034 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2035 | tty->alt_speed = 460800; | |
02f1175c JS |
2036 | |
2037 | card = info->card; | |
875b206b | 2038 | channel = info->line - card->first_line; |
02f1175c | 2039 | |
2693f485 | 2040 | if (!cy_is_Z(card)) { |
46fb7825 JS |
2041 | u32 cflags; |
2042 | ||
02f1175c | 2043 | /* baud rate */ |
d13549f8 | 2044 | baud = tty_get_baud_rate(tty); |
77451e53 | 2045 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2046 | ASYNC_SPD_CUST) { |
2047 | if (info->custom_divisor) | |
2048 | baud_rate = info->baud / info->custom_divisor; | |
2049 | else | |
2050 | baud_rate = info->baud; | |
2051 | } else if (baud > CD1400_MAX_SPEED) { | |
2052 | baud = CD1400_MAX_SPEED; | |
2053 | } | |
2054 | /* find the baud index */ | |
2055 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 2056 | if (baud == baud_table[i]) |
02f1175c | 2057 | break; |
02f1175c | 2058 | } |
15ed6cc0 | 2059 | if (i == 20) |
02f1175c | 2060 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2061 | |
77451e53 | 2062 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2063 | ASYNC_SPD_CUST) { |
2064 | cyy_baud_calc(info, baud_rate); | |
2065 | } else { | |
2066 | if (info->chip_rev >= CD1400_REV_J) { | |
2067 | /* It is a CD1400 rev. J or later */ | |
2068 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2069 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2070 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2071 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2072 | } else { | |
2073 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2074 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2075 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2076 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2077 | } | |
2078 | } | |
2079 | if (baud_table[i] == 134) { | |
2080 | /* get it right for 134.5 baud */ | |
2081 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2082 | 2; | |
77451e53 | 2083 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2084 | ASYNC_SPD_CUST) { |
2085 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2086 | baud_rate) + 2; | |
2087 | } else if (baud_table[i]) { | |
2088 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2089 | baud_table[i]) + 2; | |
2090 | /* this needs to be propagated into the card info */ | |
2091 | } else { | |
2092 | info->timeout = 0; | |
2093 | } | |
2094 | /* By tradition (is it a standard?) a baud rate of zero | |
2095 | implies the line should be/has been closed. A bit | |
2096 | later in this routine such a test is performed. */ | |
2097 | ||
2098 | /* byte size and parity */ | |
2099 | info->cor5 = 0; | |
2100 | info->cor4 = 0; | |
2101 | /* receive threshold */ | |
2102 | info->cor3 = (info->default_threshold ? | |
2103 | info->default_threshold : baud_cor3[i]); | |
2104 | info->cor2 = CyETC; | |
2105 | switch (cflag & CSIZE) { | |
2106 | case CS5: | |
2107 | info->cor1 = Cy_5_BITS; | |
2108 | break; | |
2109 | case CS6: | |
2110 | info->cor1 = Cy_6_BITS; | |
2111 | break; | |
2112 | case CS7: | |
2113 | info->cor1 = Cy_7_BITS; | |
2114 | break; | |
2115 | case CS8: | |
2116 | info->cor1 = Cy_8_BITS; | |
2117 | break; | |
2118 | } | |
15ed6cc0 | 2119 | if (cflag & CSTOPB) |
02f1175c | 2120 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2121 | |
02f1175c | 2122 | if (cflag & PARENB) { |
15ed6cc0 | 2123 | if (cflag & PARODD) |
02f1175c | 2124 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2125 | else |
02f1175c | 2126 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2127 | } else |
02f1175c | 2128 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2129 | |
2130 | /* CTS flow control flag */ | |
2131 | if (cflag & CRTSCTS) { | |
77451e53 | 2132 | info->port.flags |= ASYNC_CTS_FLOW; |
02f1175c JS |
2133 | info->cor2 |= CyCtsAE; |
2134 | } else { | |
77451e53 | 2135 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2136 | info->cor2 &= ~CyCtsAE; |
2137 | } | |
2138 | if (cflag & CLOCAL) | |
77451e53 | 2139 | info->port.flags &= ~ASYNC_CHECK_CD; |
02f1175c | 2140 | else |
77451e53 | 2141 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2142 | |
2143 | /*********************************************** | |
2144 | The hardware option, CyRtsAO, presents RTS when | |
2145 | the chip has characters to send. Since most modems | |
2146 | use RTS as reverse (inbound) flow control, this | |
2147 | option is not used. If inbound flow control is | |
2148 | necessary, DTR can be programmed to provide the | |
2149 | appropriate signals for use with a non-standard | |
2150 | cable. Contact Marcio Saito for details. | |
2151 | ***********************************************/ | |
2152 | ||
02f1175c | 2153 | channel &= 0x03; |
1da177e4 | 2154 | |
9fa1b3b1 | 2155 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2156 | cyy_writeb(info, CyCAR, channel); |
02f1175c JS |
2157 | |
2158 | /* tx and rx baud rate */ | |
2159 | ||
3aeea5b9 JS |
2160 | cyy_writeb(info, CyTCOR, info->tco); |
2161 | cyy_writeb(info, CyTBPR, info->tbpr); | |
2162 | cyy_writeb(info, CyRCOR, info->rco); | |
2163 | cyy_writeb(info, CyRBPR, info->rbpr); | |
02f1175c JS |
2164 | |
2165 | /* set line characteristics according configuration */ | |
2166 | ||
3aeea5b9 JS |
2167 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
2168 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); | |
2169 | cyy_writeb(info, CyCOR1, info->cor1); | |
2170 | cyy_writeb(info, CyCOR2, info->cor2); | |
2171 | cyy_writeb(info, CyCOR3, info->cor3); | |
2172 | cyy_writeb(info, CyCOR4, info->cor4); | |
2173 | cyy_writeb(info, CyCOR5, info->cor5); | |
02f1175c | 2174 | |
3aeea5b9 JS |
2175 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
2176 | CyCOR3ch); | |
02f1175c | 2177 | |
15ed6cc0 | 2178 | /* !!! Is this needed? */ |
3aeea5b9 JS |
2179 | cyy_writeb(info, CyCAR, channel); |
2180 | cyy_writeb(info, CyRTPR, | |
02f1175c JS |
2181 | (info->default_timeout ? info->default_timeout : 0x02)); |
2182 | /* 10ms rx timeout */ | |
2183 | ||
46fb7825 JS |
2184 | cflags = CyCTS; |
2185 | if (!C_CLOCAL(tty)) | |
2186 | cflags |= CyDSR | CyRI | CyDCD; | |
2187 | /* without modem intr */ | |
2188 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); | |
2189 | /* act on 1->0 modem transitions */ | |
2190 | if ((cflag & CRTSCTS) && info->rflow) | |
2191 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); | |
2192 | else | |
2193 | cyy_writeb(info, CyMCOR1, cflags); | |
2194 | /* act on 0->1 modem transitions */ | |
2195 | cyy_writeb(info, CyMCOR2, cflags); | |
02f1175c | 2196 | |
4d768200 JS |
2197 | if (i == 0) /* baud rate is zero, turn off line */ |
2198 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2199 | else | |
2200 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2201 | |
d13549f8 | 2202 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2203 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2204 | |
1da177e4 | 2205 | } else { |
f0eefdc3 | 2206 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2207 | __u32 sw_flow; |
02f1175c | 2208 | int retval; |
1da177e4 | 2209 | |
2693f485 | 2210 | if (!cyz_is_loaded(card)) |
02f1175c | 2211 | return; |
1da177e4 | 2212 | |
02f1175c | 2213 | /* baud rate */ |
d13549f8 | 2214 | baud = tty_get_baud_rate(tty); |
77451e53 | 2215 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2216 | ASYNC_SPD_CUST) { |
2217 | if (info->custom_divisor) | |
2218 | baud_rate = info->baud / info->custom_divisor; | |
2219 | else | |
2220 | baud_rate = info->baud; | |
2221 | } else if (baud > CYZ_MAX_SPEED) { | |
2222 | baud = CYZ_MAX_SPEED; | |
2223 | } | |
2224 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2225 | ||
2226 | if (baud == 134) { | |
2227 | /* get it right for 134.5 baud */ | |
2228 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2229 | 2; | |
77451e53 | 2230 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2231 | ASYNC_SPD_CUST) { |
2232 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2233 | baud_rate) + 2; | |
2234 | } else if (baud) { | |
2235 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2236 | baud) + 2; | |
2237 | /* this needs to be propagated into the card info */ | |
2238 | } else { | |
2239 | info->timeout = 0; | |
2240 | } | |
1da177e4 | 2241 | |
02f1175c JS |
2242 | /* byte size and parity */ |
2243 | switch (cflag & CSIZE) { | |
2244 | case CS5: | |
2245 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2246 | break; | |
2247 | case CS6: | |
2248 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2249 | break; | |
2250 | case CS7: | |
2251 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2252 | break; | |
2253 | case CS8: | |
2254 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2255 | break; | |
2256 | } | |
2257 | if (cflag & CSTOPB) { | |
2258 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2259 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2260 | } else { |
2261 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2262 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2263 | } |
2264 | if (cflag & PARENB) { | |
15ed6cc0 | 2265 | if (cflag & PARODD) |
02f1175c | 2266 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2267 | else |
02f1175c | 2268 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2269 | } else |
02f1175c | 2270 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2271 | |
02f1175c JS |
2272 | /* CTS flow control flag */ |
2273 | if (cflag & CRTSCTS) { | |
2274 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2275 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2276 | } else { |
db05c3b1 JS |
2277 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2278 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2279 | } |
2280 | /* As the HW flow control is done in firmware, the driver | |
2281 | doesn't need to care about it */ | |
77451e53 | 2282 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2283 | |
2284 | /* XON/XOFF/XANY flow control flags */ | |
2285 | sw_flow = 0; | |
2286 | if (iflag & IXON) { | |
2287 | sw_flow |= C_FL_OXX; | |
2288 | if (iflag & IXANY) | |
2289 | sw_flow |= C_FL_OIXANY; | |
2290 | } | |
2291 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2292 | ||
875b206b | 2293 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2294 | if (retval != 0) { |
21719191 JS |
2295 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2296 | "was %x\n", info->line, retval); | |
02f1175c JS |
2297 | } |
2298 | ||
2299 | /* CD sensitivity */ | |
15ed6cc0 | 2300 | if (cflag & CLOCAL) |
77451e53 | 2301 | info->port.flags &= ~ASYNC_CHECK_CD; |
15ed6cc0 | 2302 | else |
77451e53 | 2303 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 2304 | |
02f1175c JS |
2305 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2306 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2307 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2308 | #ifdef CY_DEBUG_DTR |
21719191 | 2309 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2310 | #endif |
02f1175c JS |
2311 | } else { |
2312 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2313 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2314 | #ifdef CY_DEBUG_DTR |
21719191 | 2315 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2316 | #endif |
02f1175c | 2317 | } |
1da177e4 | 2318 | |
15ed6cc0 | 2319 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2320 | if (retval != 0) { |
21719191 JS |
2321 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2322 | "was %x\n", info->line, retval); | |
02f1175c | 2323 | } |
1da177e4 | 2324 | |
d13549f8 | 2325 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2326 | } |
02f1175c | 2327 | } /* set_line_char */ |
1da177e4 | 2328 | |
6c28181c | 2329 | static int cy_get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 2330 | struct serial_struct __user *retinfo) |
1da177e4 | 2331 | { |
875b206b | 2332 | struct cyclades_card *cinfo = info->card; |
6c28181c JS |
2333 | struct serial_struct tmp = { |
2334 | .type = info->type, | |
2335 | .line = info->line, | |
2336 | .port = (info->card - cy_card) * 0x100 + info->line - | |
2337 | cinfo->first_line, | |
2338 | .irq = cinfo->irq, | |
2339 | .flags = info->port.flags, | |
2340 | .close_delay = info->port.close_delay, | |
2341 | .closing_wait = info->port.closing_wait, | |
2342 | .baud_base = info->baud, | |
2343 | .custom_divisor = info->custom_divisor, | |
2344 | .hub6 = 0, /*!!! */ | |
2345 | }; | |
02f1175c | 2346 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
6c28181c | 2347 | } |
1da177e4 LT |
2348 | |
2349 | static int | |
d13549f8 | 2350 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
15ed6cc0 | 2351 | struct serial_struct __user *new_info) |
1da177e4 | 2352 | { |
02f1175c | 2353 | struct serial_struct new_serial; |
25c3cdf8 | 2354 | int ret; |
02f1175c JS |
2355 | |
2356 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2357 | return -EFAULT; | |
02f1175c | 2358 | |
25c3cdf8 | 2359 | mutex_lock(&info->port.mutex); |
02f1175c | 2360 | if (!capable(CAP_SYS_ADMIN)) { |
44b7d1b3 | 2361 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
2362 | new_serial.baud_base != info->baud || |
2363 | (new_serial.flags & ASYNC_FLAGS & | |
2364 | ~ASYNC_USR_MASK) != | |
77451e53 | 2365 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
25c3cdf8 AC |
2366 | { |
2367 | mutex_unlock(&info->port.mutex); | |
02f1175c | 2368 | return -EPERM; |
25c3cdf8 | 2369 | } |
77451e53 | 2370 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
2371 | (new_serial.flags & ASYNC_USR_MASK); |
2372 | info->baud = new_serial.baud_base; | |
2373 | info->custom_divisor = new_serial.custom_divisor; | |
2374 | goto check_and_exit; | |
2375 | } | |
2376 | ||
2377 | /* | |
2378 | * OK, past this point, all the error checking has been done. | |
2379 | * At this point, we start making changes..... | |
2380 | */ | |
2381 | ||
2382 | info->baud = new_serial.baud_base; | |
2383 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 2384 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 2385 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
2386 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
2387 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
2388 | |
2389 | check_and_exit: | |
77451e53 | 2390 | if (info->port.flags & ASYNC_INITIALIZED) { |
d13549f8 | 2391 | cy_set_line_char(info, tty); |
25c3cdf8 | 2392 | ret = 0; |
02f1175c | 2393 | } else { |
25c3cdf8 | 2394 | ret = cy_startup(info, tty); |
02f1175c | 2395 | } |
25c3cdf8 AC |
2396 | mutex_unlock(&info->port.mutex); |
2397 | return ret; | |
02f1175c | 2398 | } /* set_serial_info */ |
1da177e4 LT |
2399 | |
2400 | /* | |
2401 | * get_lsr_info - get line status register info | |
2402 | * | |
2403 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2404 | * is emptied. On bus types like RS485, the transmitter must | |
2405 | * release the bus after transmitting. This must be done when | |
2406 | * the transmit shift register is empty, not be done when the | |
2407 | * transmit holding register is empty. This functionality | |
2408 | * allows an RS485 driver to be written in user space. | |
2409 | */ | |
15ed6cc0 | 2410 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2411 | { |
3aeea5b9 | 2412 | struct cyclades_card *card = info->card; |
02f1175c JS |
2413 | unsigned int result; |
2414 | unsigned long flags; | |
3aeea5b9 | 2415 | u8 status; |
1da177e4 | 2416 | |
2693f485 | 2417 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2418 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2419 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2420 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2421 | result = (status ? 0 : TIOCSER_TEMT); |
2422 | } else { | |
2423 | /* Not supported yet */ | |
2424 | return -EINVAL; | |
2425 | } | |
2426 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
2427 | } |
2428 | ||
60b33c13 | 2429 | static int cy_tiocmget(struct tty_struct *tty) |
1da177e4 | 2430 | { |
cab9bdd1 | 2431 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2432 | struct cyclades_card *card; |
3aeea5b9 | 2433 | int result; |
02f1175c | 2434 | |
bf9d8929 | 2435 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2436 | return -ENODEV; |
1da177e4 | 2437 | |
02f1175c | 2438 | card = info->card; |
0d348729 | 2439 | |
2693f485 | 2440 | if (!cy_is_Z(card)) { |
0d348729 | 2441 | unsigned long flags; |
3aeea5b9 JS |
2442 | int channel = info->line - card->first_line; |
2443 | u8 status; | |
1da177e4 | 2444 | |
9fa1b3b1 | 2445 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2446 | cyy_writeb(info, CyCAR, channel & 0x03); |
2447 | status = cyy_readb(info, CyMSVR1); | |
2448 | status |= cyy_readb(info, CyMSVR2); | |
9fa1b3b1 | 2449 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2450 | |
2451 | if (info->rtsdtr_inv) { | |
2452 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2453 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2454 | } else { | |
2455 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2456 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2457 | } | |
2458 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2459 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2460 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2461 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2462 | } else { |
0d348729 JS |
2463 | u32 lstatus; |
2464 | ||
2465 | if (!cyz_is_loaded(card)) { | |
2466 | result = -ENODEV; | |
2467 | goto end; | |
02f1175c | 2468 | } |
1da177e4 | 2469 | |
0d348729 JS |
2470 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
2471 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | | |
2472 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2473 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2474 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2475 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2476 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
02f1175c | 2477 | } |
0d348729 | 2478 | end: |
02f1175c JS |
2479 | return result; |
2480 | } /* cy_tiomget */ | |
1da177e4 LT |
2481 | |
2482 | static int | |
20b9d177 | 2483 | cy_tiocmset(struct tty_struct *tty, |
02f1175c | 2484 | unsigned int set, unsigned int clear) |
1da177e4 | 2485 | { |
cab9bdd1 | 2486 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2487 | struct cyclades_card *card; |
02f1175c | 2488 | unsigned long flags; |
02f1175c | 2489 | |
bf9d8929 | 2490 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2491 | return -ENODEV; |
2492 | ||
2493 | card = info->card; | |
2693f485 | 2494 | if (!cy_is_Z(card)) { |
4d768200 JS |
2495 | spin_lock_irqsave(&card->card_lock, flags); |
2496 | cyy_change_rts_dtr(info, set, clear); | |
2497 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2498 | } else { |
0d348729 JS |
2499 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
2500 | int retval, channel = info->line - card->first_line; | |
2501 | u32 rs; | |
2502 | ||
2503 | if (!cyz_is_loaded(card)) | |
2504 | return -ENODEV; | |
2505 | ||
2506 | spin_lock_irqsave(&card->card_lock, flags); | |
2507 | rs = readl(&ch_ctrl->rs_control); | |
2508 | if (set & TIOCM_RTS) | |
2509 | rs |= C_RS_RTS; | |
2510 | if (clear & TIOCM_RTS) | |
2511 | rs &= ~C_RS_RTS; | |
2512 | if (set & TIOCM_DTR) { | |
2513 | rs |= C_RS_DTR; | |
1da177e4 | 2514 | #ifdef CY_DEBUG_DTR |
0d348729 | 2515 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
1da177e4 | 2516 | #endif |
0d348729 JS |
2517 | } |
2518 | if (clear & TIOCM_DTR) { | |
2519 | rs &= ~C_RS_DTR; | |
1da177e4 | 2520 | #ifdef CY_DEBUG_DTR |
0d348729 JS |
2521 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2522 | "Z DTR\n"); | |
1da177e4 | 2523 | #endif |
02f1175c | 2524 | } |
0d348729 | 2525 | cy_writel(&ch_ctrl->rs_control, rs); |
9fa1b3b1 | 2526 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
0d348729 | 2527 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2528 | if (retval != 0) { |
21719191 JS |
2529 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2530 | "was %x\n", info->line, retval); | |
02f1175c | 2531 | } |
1da177e4 | 2532 | } |
02f1175c | 2533 | return 0; |
0d348729 | 2534 | } |
1da177e4 LT |
2535 | |
2536 | /* | |
2537 | * cy_break() --- routine which turns the break handling on or off | |
2538 | */ | |
9e98966c | 2539 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2540 | { |
cab9bdd1 | 2541 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2542 | struct cyclades_card *card; |
02f1175c | 2543 | unsigned long flags; |
9e98966c | 2544 | int retval = 0; |
1da177e4 | 2545 | |
02f1175c | 2546 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2547 | return -EINVAL; |
1da177e4 | 2548 | |
9fa1b3b1 JS |
2549 | card = info->card; |
2550 | ||
2551 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2552 | if (!cy_is_Z(card)) { |
02f1175c JS |
2553 | /* Let the transmit ISR take care of this (since it |
2554 | requires stuffing characters into the output stream). | |
2555 | */ | |
2556 | if (break_state == -1) { | |
2557 | if (!info->breakon) { | |
2558 | info->breakon = 1; | |
2559 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2560 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2561 | start_xmit(info); |
9fa1b3b1 | 2562 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2563 | } |
2564 | } | |
2565 | } else { | |
2566 | if (!info->breakoff) { | |
2567 | info->breakoff = 1; | |
2568 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2569 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2570 | start_xmit(info); |
9fa1b3b1 | 2571 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2572 | } |
2573 | } | |
1da177e4 | 2574 | } |
1da177e4 | 2575 | } else { |
02f1175c | 2576 | if (break_state == -1) { |
9fa1b3b1 JS |
2577 | retval = cyz_issue_cmd(card, |
2578 | info->line - card->first_line, | |
02f1175c JS |
2579 | C_CM_SET_BREAK, 0L); |
2580 | if (retval != 0) { | |
21719191 JS |
2581 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2582 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2583 | } |
2584 | } else { | |
9fa1b3b1 JS |
2585 | retval = cyz_issue_cmd(card, |
2586 | info->line - card->first_line, | |
02f1175c JS |
2587 | C_CM_CLR_BREAK, 0L); |
2588 | if (retval != 0) { | |
21719191 JS |
2589 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2590 | "on ttyC%d was %x\n", info->line, | |
2591 | retval); | |
02f1175c | 2592 | } |
1da177e4 | 2593 | } |
1da177e4 | 2594 | } |
9fa1b3b1 | 2595 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2596 | return retval; |
02f1175c | 2597 | } /* cy_break */ |
1da177e4 | 2598 | |
02f1175c | 2599 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2600 | { |
3aeea5b9 | 2601 | struct cyclades_card *card = info->card; |
02f1175c | 2602 | unsigned long flags; |
1da177e4 | 2603 | |
2693f485 | 2604 | if (!cy_is_Z(card)) { |
02f1175c JS |
2605 | info->cor3 &= ~CyREC_FIFO; |
2606 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2607 | |
9fa1b3b1 | 2608 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2609 | cyy_writeb(info, CyCOR3, info->cor3); |
2610 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); | |
9fa1b3b1 | 2611 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2612 | } |
2613 | return 0; | |
2614 | } /* set_threshold */ | |
1da177e4 | 2615 | |
15ed6cc0 AC |
2616 | static int get_threshold(struct cyclades_port *info, |
2617 | unsigned long __user *value) | |
1da177e4 | 2618 | { |
3aeea5b9 | 2619 | struct cyclades_card *card = info->card; |
1da177e4 | 2620 | |
2693f485 | 2621 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2622 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
02f1175c | 2623 | return put_user(tmp, value); |
02f1175c | 2624 | } |
f7429034 | 2625 | return 0; |
02f1175c | 2626 | } /* get_threshold */ |
1da177e4 | 2627 | |
02f1175c | 2628 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2629 | { |
3aeea5b9 | 2630 | struct cyclades_card *card = info->card; |
02f1175c | 2631 | unsigned long flags; |
1da177e4 | 2632 | |
2693f485 | 2633 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2634 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2635 | cyy_writeb(info, CyRTPR, value & 0xff); |
9fa1b3b1 | 2636 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2637 | } |
2638 | return 0; | |
2639 | } /* set_timeout */ | |
1da177e4 | 2640 | |
15ed6cc0 AC |
2641 | static int get_timeout(struct cyclades_port *info, |
2642 | unsigned long __user *value) | |
1da177e4 | 2643 | { |
3aeea5b9 | 2644 | struct cyclades_card *card = info->card; |
1da177e4 | 2645 | |
2693f485 | 2646 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2647 | u8 tmp = cyy_readb(info, CyRTPR); |
02f1175c | 2648 | return put_user(tmp, value); |
02f1175c | 2649 | } |
f7429034 | 2650 | return 0; |
02f1175c | 2651 | } /* get_timeout */ |
1da177e4 | 2652 | |
6c28181c JS |
2653 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2654 | struct cyclades_icount *cprev) | |
1da177e4 | 2655 | { |
6c28181c JS |
2656 | struct cyclades_icount cnow; |
2657 | unsigned long flags; | |
2658 | int ret; | |
1da177e4 | 2659 | |
6c28181c JS |
2660 | spin_lock_irqsave(&info->card->card_lock, flags); |
2661 | cnow = info->icount; /* atomic copy */ | |
2662 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2663 | ||
2664 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2665 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2666 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2667 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2668 | ||
2669 | *cprev = cnow; | |
2670 | ||
2671 | return ret; | |
2672 | } | |
1da177e4 LT |
2673 | |
2674 | /* | |
2675 | * This routine allows the tty driver to implement device- | |
2676 | * specific ioctl's. If the ioctl number passed in cmd is | |
2677 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2678 | */ | |
2679 | static int | |
6caa76b7 | 2680 | cy_ioctl(struct tty_struct *tty, |
02f1175c | 2681 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2682 | { |
cab9bdd1 | 2683 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2684 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2685 | int ret_val = 0; |
2686 | unsigned long flags; | |
2687 | void __user *argp = (void __user *)arg; | |
2688 | ||
2689 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2690 | return -ENODEV; | |
1da177e4 LT |
2691 | |
2692 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2693 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2694 | info->line, cmd, arg); | |
1da177e4 LT |
2695 | #endif |
2696 | ||
02f1175c JS |
2697 | switch (cmd) { |
2698 | case CYGETMON: | |
6c28181c JS |
2699 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2700 | ret_val = -EFAULT; | |
2701 | break; | |
2702 | } | |
2703 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2704 | break; |
2705 | case CYGETTHRESH: | |
2706 | ret_val = get_threshold(info, argp); | |
2707 | break; | |
2708 | case CYSETTHRESH: | |
2709 | ret_val = set_threshold(info, arg); | |
2710 | break; | |
2711 | case CYGETDEFTHRESH: | |
6c28181c JS |
2712 | ret_val = put_user(info->default_threshold, |
2713 | (unsigned long __user *)argp); | |
02f1175c JS |
2714 | break; |
2715 | case CYSETDEFTHRESH: | |
6c28181c | 2716 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2717 | break; |
2718 | case CYGETTIMEOUT: | |
2719 | ret_val = get_timeout(info, argp); | |
2720 | break; | |
2721 | case CYSETTIMEOUT: | |
2722 | ret_val = set_timeout(info, arg); | |
2723 | break; | |
2724 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2725 | ret_val = put_user(info->default_timeout, |
2726 | (unsigned long __user *)argp); | |
02f1175c JS |
2727 | break; |
2728 | case CYSETDEFTIMEOUT: | |
6c28181c | 2729 | info->default_timeout = arg & 0xff; |
02f1175c | 2730 | break; |
1da177e4 | 2731 | case CYSETRFLOW: |
02f1175c | 2732 | info->rflow = (int)arg; |
02f1175c | 2733 | break; |
1da177e4 | 2734 | case CYGETRFLOW: |
02f1175c JS |
2735 | ret_val = info->rflow; |
2736 | break; | |
1da177e4 | 2737 | case CYSETRTSDTR_INV: |
02f1175c | 2738 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2739 | break; |
1da177e4 | 2740 | case CYGETRTSDTR_INV: |
02f1175c JS |
2741 | ret_val = info->rtsdtr_inv; |
2742 | break; | |
1da177e4 | 2743 | case CYGETCD1400VER: |
02f1175c JS |
2744 | ret_val = info->chip_rev; |
2745 | break; | |
1da177e4 LT |
2746 | #ifndef CONFIG_CYZ_INTR |
2747 | case CYZSETPOLLCYCLE: | |
02f1175c | 2748 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2749 | break; |
1da177e4 | 2750 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2751 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2752 | break; | |
2753 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2754 | case CYSETWAIT: |
44b7d1b3 | 2755 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2756 | break; |
1da177e4 | 2757 | case CYGETWAIT: |
44b7d1b3 | 2758 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
2759 | break; |
2760 | case TIOCGSERIAL: | |
6c28181c | 2761 | ret_val = cy_get_serial_info(info, argp); |
02f1175c JS |
2762 | break; |
2763 | case TIOCSSERIAL: | |
d13549f8 | 2764 | ret_val = cy_set_serial_info(info, tty, argp); |
02f1175c JS |
2765 | break; |
2766 | case TIOCSERGETLSR: /* Get line status register */ | |
2767 | ret_val = get_lsr_info(info, argp); | |
2768 | break; | |
2769 | /* | |
2770 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2771 | * - mask passed in arg for lines of interest | |
2772 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2773 | * Caller should use TIOCGICOUNT to see which one it was | |
2774 | */ | |
1da177e4 | 2775 | case TIOCMIWAIT: |
9fa1b3b1 | 2776 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2777 | /* note the counters on entry */ |
2c7fea99 | 2778 | cnow = info->icount; |
9fa1b3b1 | 2779 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
bdc04e31 | 2780 | ret_val = wait_event_interruptible(info->port.delta_msr_wait, |
6c28181c | 2781 | cy_cflags_changed(info, arg, &cnow)); |
2c7fea99 | 2782 | break; |
1da177e4 | 2783 | |
02f1175c JS |
2784 | /* |
2785 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2786 | * Return: write counters to the user passed counter struct | |
2787 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2788 | * RI where only 0->1 is counted. | |
2789 | */ | |
02f1175c JS |
2790 | default: |
2791 | ret_val = -ENOIOCTLCMD; | |
2792 | } | |
1da177e4 LT |
2793 | |
2794 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2795 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2796 | #endif |
02f1175c JS |
2797 | return ret_val; |
2798 | } /* cy_ioctl */ | |
1da177e4 | 2799 | |
0587102c AC |
2800 | static int cy_get_icount(struct tty_struct *tty, |
2801 | struct serial_icounter_struct *sic) | |
2802 | { | |
2803 | struct cyclades_port *info = tty->driver_data; | |
2804 | struct cyclades_icount cnow; /* Used to snapshot */ | |
2805 | unsigned long flags; | |
2806 | ||
2807 | spin_lock_irqsave(&info->card->card_lock, flags); | |
2808 | cnow = info->icount; | |
2809 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2810 | ||
2811 | sic->cts = cnow.cts; | |
2812 | sic->dsr = cnow.dsr; | |
2813 | sic->rng = cnow.rng; | |
2814 | sic->dcd = cnow.dcd; | |
2815 | sic->rx = cnow.rx; | |
2816 | sic->tx = cnow.tx; | |
2817 | sic->frame = cnow.frame; | |
2818 | sic->overrun = cnow.overrun; | |
2819 | sic->parity = cnow.parity; | |
2820 | sic->brk = cnow.brk; | |
2821 | sic->buf_overrun = cnow.buf_overrun; | |
2822 | return 0; | |
2823 | } | |
2824 | ||
1da177e4 LT |
2825 | /* |
2826 | * This routine allows the tty driver to be notified when | |
2827 | * device's termios settings have changed. Note that a | |
2828 | * well-designed tty driver should be prepared to accept the case | |
2829 | * where old == NULL, and try to do something rational. | |
2830 | */ | |
02f1175c | 2831 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2832 | { |
cab9bdd1 | 2833 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2834 | |
2835 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2836 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2837 | #endif |
2838 | ||
d13549f8 | 2839 | cy_set_line_char(info, tty); |
02f1175c JS |
2840 | |
2841 | if ((old_termios->c_cflag & CRTSCTS) && | |
2842 | !(tty->termios->c_cflag & CRTSCTS)) { | |
2843 | tty->hw_stopped = 0; | |
2844 | cy_start(tty); | |
2845 | } | |
1da177e4 | 2846 | #if 0 |
02f1175c JS |
2847 | /* |
2848 | * No need to wake up processes in open wait, since they | |
2849 | * sample the CLOCAL flag once, and don't recheck it. | |
2850 | * XXX It's not clear whether the current behavior is correct | |
2851 | * or not. Hence, this may change..... | |
2852 | */ | |
2853 | if (!(old_termios->c_cflag & CLOCAL) && | |
2854 | (tty->termios->c_cflag & CLOCAL)) | |
77451e53 | 2855 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 2856 | #endif |
02f1175c | 2857 | } /* cy_set_termios */ |
1da177e4 LT |
2858 | |
2859 | /* This function is used to send a high-priority XON/XOFF character to | |
2860 | the device. | |
2861 | */ | |
02f1175c | 2862 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 2863 | { |
cab9bdd1 | 2864 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2865 | struct cyclades_card *card; |
2866 | int channel; | |
1da177e4 | 2867 | |
02f1175c | 2868 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
2869 | return; |
2870 | ||
02f1175c | 2871 | info->x_char = ch; |
1da177e4 LT |
2872 | |
2873 | if (ch) | |
02f1175c | 2874 | cy_start(tty); |
1da177e4 LT |
2875 | |
2876 | card = info->card; | |
875b206b | 2877 | channel = info->line - card->first_line; |
1da177e4 | 2878 | |
2693f485 | 2879 | if (cy_is_Z(card)) { |
02f1175c | 2880 | if (ch == STOP_CHAR(tty)) |
875b206b | 2881 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 2882 | else if (ch == START_CHAR(tty)) |
875b206b | 2883 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
2884 | } |
2885 | } | |
2886 | ||
2887 | /* This routine is called by the upper-layer tty layer to signal | |
2888 | that incoming characters should be throttled because the input | |
2889 | buffers are close to full. | |
2890 | */ | |
02f1175c | 2891 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 2892 | { |
cab9bdd1 | 2893 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2894 | struct cyclades_card *card; |
02f1175c | 2895 | unsigned long flags; |
1da177e4 LT |
2896 | |
2897 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 2898 | char buf[64]; |
1da177e4 | 2899 | |
21719191 | 2900 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 2901 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
2902 | #endif |
2903 | ||
15ed6cc0 | 2904 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 2905 | return; |
02f1175c JS |
2906 | |
2907 | card = info->card; | |
2908 | ||
2909 | if (I_IXOFF(tty)) { | |
2693f485 | 2910 | if (!cy_is_Z(card)) |
02f1175c JS |
2911 | cy_send_xchar(tty, STOP_CHAR(tty)); |
2912 | else | |
2913 | info->throttle = 1; | |
2914 | } | |
1da177e4 | 2915 | |
02f1175c | 2916 | if (tty->termios->c_cflag & CRTSCTS) { |
2693f485 | 2917 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2918 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2919 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 2920 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2921 | } else { |
2922 | info->throttle = 1; | |
2923 | } | |
2924 | } | |
02f1175c | 2925 | } /* cy_throttle */ |
1da177e4 LT |
2926 | |
2927 | /* | |
2928 | * This routine notifies the tty driver that it should signal | |
2929 | * that characters can now be sent to the tty without fear of | |
2930 | * overrunning the input buffers of the line disciplines. | |
2931 | */ | |
02f1175c | 2932 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 2933 | { |
cab9bdd1 | 2934 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2935 | struct cyclades_card *card; |
02f1175c | 2936 | unsigned long flags; |
1da177e4 LT |
2937 | |
2938 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
2939 | char buf[64]; |
2940 | ||
21719191 | 2941 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
15ed6cc0 | 2942 | tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); |
1da177e4 LT |
2943 | #endif |
2944 | ||
15ed6cc0 | 2945 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 2946 | return; |
1da177e4 | 2947 | |
02f1175c JS |
2948 | if (I_IXOFF(tty)) { |
2949 | if (info->x_char) | |
2950 | info->x_char = 0; | |
2951 | else | |
2952 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 2953 | } |
1da177e4 | 2954 | |
02f1175c JS |
2955 | if (tty->termios->c_cflag & CRTSCTS) { |
2956 | card = info->card; | |
2693f485 | 2957 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2958 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2959 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 2960 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2961 | } else { |
2962 | info->throttle = 0; | |
2963 | } | |
2964 | } | |
02f1175c | 2965 | } /* cy_unthrottle */ |
1da177e4 LT |
2966 | |
2967 | /* cy_start and cy_stop provide software output flow control as a | |
2968 | function of XON/XOFF, software CTS, and other such stuff. | |
2969 | */ | |
02f1175c | 2970 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 2971 | { |
02f1175c | 2972 | struct cyclades_card *cinfo; |
cab9bdd1 | 2973 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2974 | int channel; |
02f1175c | 2975 | unsigned long flags; |
1da177e4 LT |
2976 | |
2977 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2978 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
2979 | #endif |
2980 | ||
02f1175c JS |
2981 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
2982 | return; | |
1da177e4 | 2983 | |
875b206b | 2984 | cinfo = info->card; |
02f1175c | 2985 | channel = info->line - cinfo->first_line; |
2693f485 | 2986 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2987 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2988 | cyy_writeb(info, CyCAR, channel & 0x03); |
2989 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); | |
9fa1b3b1 | 2990 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2991 | } |
02f1175c | 2992 | } /* cy_stop */ |
1da177e4 | 2993 | |
02f1175c | 2994 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 2995 | { |
02f1175c | 2996 | struct cyclades_card *cinfo; |
cab9bdd1 | 2997 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2998 | int channel; |
02f1175c | 2999 | unsigned long flags; |
1da177e4 LT |
3000 | |
3001 | #ifdef CY_DEBUG_OTHER | |
21719191 | 3002 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
3003 | #endif |
3004 | ||
02f1175c JS |
3005 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
3006 | return; | |
1da177e4 | 3007 | |
875b206b | 3008 | cinfo = info->card; |
02f1175c | 3009 | channel = info->line - cinfo->first_line; |
2693f485 | 3010 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 3011 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3012 | cyy_writeb(info, CyCAR, channel & 0x03); |
3013 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 3014 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 3015 | } |
02f1175c | 3016 | } /* cy_start */ |
1da177e4 | 3017 | |
1da177e4 LT |
3018 | /* |
3019 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
3020 | */ | |
02f1175c | 3021 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 3022 | { |
cab9bdd1 | 3023 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 3024 | |
1da177e4 | 3025 | #ifdef CY_DEBUG_OTHER |
21719191 | 3026 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
3027 | #endif |
3028 | ||
02f1175c JS |
3029 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
3030 | return; | |
1da177e4 | 3031 | |
02f1175c | 3032 | cy_flush_buffer(tty); |
d13549f8 | 3033 | cy_shutdown(info, tty); |
174e6fe0 | 3034 | tty_port_hangup(&info->port); |
02f1175c | 3035 | } /* cy_hangup */ |
1da177e4 | 3036 | |
f0737579 JS |
3037 | static int cyy_carrier_raised(struct tty_port *port) |
3038 | { | |
3039 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3040 | port); | |
3041 | struct cyclades_card *cinfo = info->card; | |
f0737579 JS |
3042 | unsigned long flags; |
3043 | int channel = info->line - cinfo->first_line; | |
f0737579 JS |
3044 | u32 cd; |
3045 | ||
f0737579 | 3046 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3047 | cyy_writeb(info, CyCAR, channel & 0x03); |
3048 | cd = cyy_readb(info, CyMSVR1) & CyDCD; | |
f0737579 JS |
3049 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3050 | ||
3051 | return cd; | |
3052 | } | |
3053 | ||
3054 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
3055 | { | |
3056 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3057 | port); | |
3058 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 3059 | unsigned long flags; |
f0737579 JS |
3060 | |
3061 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
3062 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
3063 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
3064 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3065 | } | |
3066 | ||
3067 | static int cyz_carrier_raised(struct tty_port *port) | |
3068 | { | |
3069 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3070 | port); | |
f0737579 | 3071 | |
f0eefdc3 | 3072 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3073 | } |
3074 | ||
3075 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3076 | { | |
3077 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3078 | port); | |
3079 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3080 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3081 | int ret, channel = info->line - cinfo->first_line; |
3082 | u32 rs; | |
3083 | ||
f0eefdc3 | 3084 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3085 | if (raise) |
3086 | rs |= C_RS_RTS | C_RS_DTR; | |
3087 | else | |
3088 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3089 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3090 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3091 | if (ret != 0) | |
3092 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3093 | __func__, info->line, ret); | |
3094 | #ifdef CY_DEBUG_DTR | |
3095 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3096 | #endif | |
3097 | } | |
3098 | ||
3099 | static const struct tty_port_operations cyy_port_ops = { | |
3100 | .carrier_raised = cyy_carrier_raised, | |
3101 | .dtr_rts = cyy_dtr_rts, | |
e936ffd5 | 3102 | .shutdown = cy_do_close, |
f0737579 JS |
3103 | }; |
3104 | ||
3105 | static const struct tty_port_operations cyz_port_ops = { | |
3106 | .carrier_raised = cyz_carrier_raised, | |
3107 | .dtr_rts = cyz_dtr_rts, | |
e936ffd5 | 3108 | .shutdown = cy_do_close, |
f0737579 JS |
3109 | }; |
3110 | ||
1da177e4 LT |
3111 | /* |
3112 | * --------------------------------------------------------------------- | |
3113 | * cy_init() and friends | |
3114 | * | |
3115 | * cy_init() is called at boot-time to initialize the serial driver. | |
3116 | * --------------------------------------------------------------------- | |
3117 | */ | |
3118 | ||
dd025c0c | 3119 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3120 | { |
3121 | struct cyclades_port *info; | |
f0eefdc3 | 3122 | unsigned int channel, port; |
0809e267 | 3123 | |
3046d50e | 3124 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3125 | cinfo->intr_enabled = 0; |
3046d50e | 3126 | |
963118ee JS |
3127 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3128 | GFP_KERNEL); | |
dd025c0c JS |
3129 | if (cinfo->ports == NULL) { |
3130 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3131 | return -ENOMEM; | |
3132 | } | |
3133 | ||
f0eefdc3 JS |
3134 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3135 | channel++, port++) { | |
3136 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3137 | tty_port_init(&info->port); |
3046d50e | 3138 | info->magic = CYCLADES_MAGIC; |
875b206b | 3139 | info->card = cinfo; |
3046d50e | 3140 | info->line = port; |
3046d50e | 3141 | |
44b7d1b3 AC |
3142 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3143 | info->port.close_delay = 5 * HZ / 10; | |
77451e53 | 3144 | info->port.flags = STD_COM_FLAGS; |
2c7fea99 | 3145 | init_completion(&info->shutdown_wait); |
3046d50e | 3146 | |
2693f485 | 3147 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3148 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3149 | struct ZFW_CTRL *zfw_ctrl; | |
3150 | ||
f0737579 | 3151 | info->port.ops = &cyz_port_ops; |
0809e267 | 3152 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3153 | |
3154 | zfw_ctrl = cinfo->base_addr + | |
3155 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3156 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3157 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3158 | ||
101b8159 | 3159 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3160 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3161 | else | |
3046d50e | 3162 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3163 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
3164 | setup_timer(&cyz_rx_full_timer[port], |
3165 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 3166 | #endif |
3046d50e | 3167 | } else { |
f0eefdc3 | 3168 | unsigned short chip_number; |
963118ee | 3169 | int index = cinfo->bus_index; |
f0eefdc3 | 3170 | |
f0737579 | 3171 | info->port.ops = &cyy_port_ops; |
0809e267 | 3172 | info->type = PORT_CIRRUS; |
0809e267 | 3173 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3174 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3175 | info->cor2 = CyETC; |
3176 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3177 | |
f0eefdc3 | 3178 | chip_number = channel / CyPORTS_PER_CHIP; |
3aeea5b9 JS |
3179 | info->u.cyy.base_addr = cinfo->base_addr + |
3180 | (cy_chip_offset[chip_number] << index); | |
3181 | info->chip_rev = cyy_readb(info, CyGFRCR); | |
15ed6cc0 AC |
3182 | |
3183 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3184 | /* It is a CD1400 rev. J or later */ |
3185 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3186 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3187 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3188 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3189 | info->rtsdtr_inv = 1; |
3190 | } else { | |
3191 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3192 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3193 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3194 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3195 | info->rtsdtr_inv = 0; |
3196 | } | |
3046d50e JS |
3197 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3198 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3199 | } |
3046d50e | 3200 | |
0809e267 | 3201 | } |
3046d50e JS |
3202 | |
3203 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3204 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3205 | mod_timer(&cyz_timerlist, jiffies + 1); |
3206 | #ifdef CY_PCI_DEBUG | |
3207 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3208 | #endif | |
3209 | } | |
3210 | #endif | |
dd025c0c | 3211 | return 0; |
0809e267 JS |
3212 | } |
3213 | ||
1da177e4 LT |
3214 | /* initialize chips on Cyclom-Y card -- return number of valid |
3215 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
3216 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
3217 | int index) | |
1da177e4 | 3218 | { |
02f1175c JS |
3219 | unsigned int chip_number; |
3220 | void __iomem *base_addr; | |
3221 | ||
3222 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3223 | /* Cy_HwReset is 0x1400 */ | |
3224 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3225 | /* Cy_ClrIntr is 0x1800 */ | |
3226 | udelay(500L); | |
3227 | ||
15ed6cc0 AC |
3228 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3229 | chip_number++) { | |
02f1175c JS |
3230 | base_addr = |
3231 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3232 | mdelay(1); | |
db05c3b1 | 3233 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3234 | /************* |
3235 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3236 | chip_number, (unsigned long)base_addr); | |
3237 | *************/ | |
3238 | return chip_number; | |
3239 | } | |
3240 | ||
3241 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3242 | udelay(10L); | |
3243 | ||
3244 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3245 | cannot distinguish between references to chip 0 and a non- | |
3246 | existent chip 4. If the preceding clearing of the supposed | |
3247 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3248 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3249 | */ | |
db05c3b1 | 3250 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3251 | (cy_chip_offset[0] << index) + |
3252 | (CyGFRCR << index)) == 0) { | |
3253 | return chip_number; | |
3254 | } | |
3255 | ||
3256 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3257 | mdelay(1); | |
3258 | ||
db05c3b1 | 3259 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3260 | /* |
3261 | printk(" chip #%d at %#6lx is not responding ", | |
3262 | chip_number, (unsigned long)base_addr); | |
3263 | printk("(GFRCR stayed 0)\n", | |
3264 | */ | |
3265 | return chip_number; | |
3266 | } | |
db05c3b1 | 3267 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3268 | 0x40) { |
3269 | /* | |
3270 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3271 | "%#2x)\n", | |
3272 | chip_number, (unsigned long)base_addr, | |
3273 | base_addr[CyGFRCR<<index]); | |
3274 | */ | |
3275 | return chip_number; | |
3276 | } | |
3277 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3278 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3279 | /* It is a CD1400 rev. J or later */ |
3280 | /* Impossible to reach 5ms with this chip. | |
3281 | Changed to 2ms instead (f = 500 Hz). */ | |
3282 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3283 | } else { | |
3284 | /* f = 200 Hz */ | |
3285 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3286 | } | |
1da177e4 | 3287 | |
02f1175c JS |
3288 | /* |
3289 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3290 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3291 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3292 | */ |
3293 | } | |
3294 | return chip_number; | |
3295 | } /* cyy_init_card */ | |
1da177e4 LT |
3296 | |
3297 | /* | |
3298 | * --------------------------------------------------------------------- | |
3299 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3300 | * sets global variables and return the number of ISA boards found. | |
3301 | * --------------------------------------------------------------------- | |
3302 | */ | |
02f1175c | 3303 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3304 | { |
3305 | #ifdef CONFIG_ISA | |
02f1175c JS |
3306 | unsigned short cy_isa_irq, nboard; |
3307 | void __iomem *cy_isa_address; | |
3308 | unsigned short i, j, cy_isa_nchan; | |
02f1175c | 3309 | int isparam = 0; |
1da177e4 | 3310 | |
02f1175c | 3311 | nboard = 0; |
1da177e4 | 3312 | |
1da177e4 | 3313 | /* Check for module parameters */ |
02f1175c JS |
3314 | for (i = 0; i < NR_CARDS; i++) { |
3315 | if (maddr[i] || i) { | |
3316 | isparam = 1; | |
3317 | cy_isa_addresses[i] = maddr[i]; | |
3318 | } | |
3319 | if (!maddr[i]) | |
3320 | break; | |
1da177e4 | 3321 | } |
1da177e4 | 3322 | |
02f1175c JS |
3323 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3324 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3325 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3326 | if (isa_address == 0x0000) |
096dcfce | 3327 | return nboard; |
1da177e4 | 3328 | |
02f1175c | 3329 | /* probe for CD1400... */ |
cd989b3a | 3330 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3331 | if (cy_isa_address == NULL) { |
3332 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3333 | "address\n"); | |
3334 | continue; | |
3335 | } | |
02f1175c JS |
3336 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3337 | cyy_init_card(cy_isa_address, 0); | |
3338 | if (cy_isa_nchan == 0) { | |
3137553d | 3339 | iounmap(cy_isa_address); |
02f1175c JS |
3340 | continue; |
3341 | } | |
20904363 | 3342 | |
196b3167 | 3343 | if (isparam && i < NR_CARDS && irq[i]) |
02f1175c | 3344 | cy_isa_irq = irq[i]; |
1da177e4 | 3345 | else |
02f1175c JS |
3346 | /* find out the board's irq by probing */ |
3347 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3348 | if (cy_isa_irq == 0) { | |
21719191 JS |
3349 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3350 | "IRQ could not be detected.\n", | |
02f1175c | 3351 | (unsigned long)cy_isa_address); |
3137553d | 3352 | iounmap(cy_isa_address); |
02f1175c JS |
3353 | continue; |
3354 | } | |
3355 | ||
3356 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3357 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3358 | "more channels are available. Change NR_PORTS " | |
3359 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 3360 | (unsigned long)cy_isa_address); |
3137553d | 3361 | iounmap(cy_isa_address); |
096dcfce | 3362 | return nboard; |
02f1175c JS |
3363 | } |
3364 | /* fill the next cy_card structure available */ | |
3365 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 3366 | if (cy_card[j].base_addr == NULL) |
02f1175c JS |
3367 | break; |
3368 | } | |
3369 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3370 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3371 | "more cards can be used. Change NR_CARDS in " | |
3372 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3373 | (unsigned long)cy_isa_address); |
3137553d | 3374 | iounmap(cy_isa_address); |
096dcfce | 3375 | return nboard; |
02f1175c JS |
3376 | } |
3377 | ||
3378 | /* allocate IRQ */ | |
3379 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
3380 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
3381 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3382 | "could not allocate IRQ#%d.\n", | |
3383 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3384 | iounmap(cy_isa_address); |
096dcfce | 3385 | return nboard; |
02f1175c JS |
3386 | } |
3387 | ||
3388 | /* set cy_card */ | |
3389 | cy_card[j].base_addr = cy_isa_address; | |
97e87f8e | 3390 | cy_card[j].ctl_addr.p9050 = NULL; |
02f1175c JS |
3391 | cy_card[j].irq = (int)cy_isa_irq; |
3392 | cy_card[j].bus_index = 0; | |
3393 | cy_card[j].first_line = cy_next_channel; | |
963118ee JS |
3394 | cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; |
3395 | cy_card[j].nports = cy_isa_nchan; | |
3137553d JS |
3396 | if (cy_init_card(&cy_card[j])) { |
3397 | cy_card[j].base_addr = NULL; | |
3398 | free_irq(cy_isa_irq, &cy_card[j]); | |
3399 | iounmap(cy_isa_address); | |
3400 | continue; | |
3401 | } | |
02f1175c JS |
3402 | nboard++; |
3403 | ||
21719191 JS |
3404 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3405 | "%d channels starting from port %d\n", | |
02f1175c JS |
3406 | j + 1, (unsigned long)cy_isa_address, |
3407 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3408 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3409 | ||
6ad1ccc1 JS |
3410 | for (j = cy_next_channel; |
3411 | j < cy_next_channel + cy_isa_nchan; j++) | |
3412 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
3413 | cy_next_channel += cy_isa_nchan; |
3414 | } | |
096dcfce | 3415 | return nboard; |
1da177e4 | 3416 | #else |
096dcfce | 3417 | return 0; |
02f1175c JS |
3418 | #endif /* CONFIG_ISA */ |
3419 | } /* cy_detect_isa */ | |
1da177e4 | 3420 | |
58936d8d | 3421 | #ifdef CONFIG_PCI |
054f5b0a JS |
3422 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
3423 | { | |
3424 | unsigned int a; | |
3425 | ||
3426 | for (a = 0; a < size && *str; a++, str++) | |
3427 | if (*str & 0x80) | |
3428 | return -EINVAL; | |
3429 | ||
3430 | for (; a < size; a++, str++) | |
3431 | if (*str) | |
3432 | return -EINVAL; | |
3433 | ||
3434 | return 0; | |
3435 | } | |
3436 | ||
f61e761e | 3437 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3438 | unsigned int size) |
3439 | { | |
3440 | for (; size > 0; size--) { | |
3441 | cy_writel(fpga, *data++); | |
3442 | udelay(10); | |
3443 | } | |
3444 | } | |
3445 | ||
3446 | static void __devinit plx_init(struct pci_dev *pdev, int irq, | |
3447 | struct RUNTIME_9060 __iomem *addr) | |
1da177e4 | 3448 | { |
02f1175c | 3449 | /* Reset PLX */ |
054f5b0a | 3450 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3451 | udelay(100L); |
054f5b0a | 3452 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3453 | |
3454 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3455 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3456 | udelay(100L); |
054f5b0a JS |
3457 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3458 | ||
3459 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3460 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3461 | * registers. This will remain here until we find a permanent fix. | |
3462 | */ | |
3463 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3464 | } | |
3465 | ||
3466 | static int __devinit __cyz_load_fw(const struct firmware *fw, | |
3467 | const char *name, const u32 mailbox, void __iomem *base, | |
3468 | void __iomem *fpga) | |
3469 | { | |
f61e761e DW |
3470 | const void *ptr = fw->data; |
3471 | const struct zfile_header *h = ptr; | |
3472 | const struct zfile_config *c, *cs; | |
3473 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3474 | unsigned int a, tmp, len = fw->size; |
3475 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3476 | if (len < sizeof(*h)) { | |
3477 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3478 | return -EINVAL; | |
3479 | } | |
3480 | ||
3481 | cs = ptr + h->config_offset; | |
3482 | bs = ptr + h->block_offset; | |
3483 | ||
3484 | if ((void *)(cs + h->n_config) > ptr + len || | |
3485 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3486 | printk(BAD_FW "too short"); | |
3487 | return -EINVAL; | |
3488 | } | |
3489 | ||
3490 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3491 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3492 | printk(BAD_FW "bad formatted header string\n"); | |
3493 | return -EINVAL; | |
3494 | } | |
3495 | ||
3496 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3497 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3498 | return -EINVAL; | |
3499 | } | |
3500 | ||
3501 | tmp = 0; | |
3502 | for (c = cs; c < cs + h->n_config; c++) { | |
3503 | for (a = 0; a < c->n_blocks; a++) | |
3504 | if (c->block_list[a] > h->n_blocks) { | |
3505 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3506 | return -EINVAL; | |
3507 | } | |
3508 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3509 | tmp++; | |
3510 | } | |
3511 | if (!tmp) { | |
3512 | printk(BAD_FW "nothing appropriate\n"); | |
3513 | return -EINVAL; | |
3514 | } | |
3515 | ||
3516 | for (b = bs; b < bs + h->n_blocks; b++) | |
3517 | if (b->file_offset + b->size > len) { | |
3518 | printk(BAD_FW "bad block data offset\n"); | |
3519 | return -EINVAL; | |
3520 | } | |
3521 | ||
3522 | /* everything is OK, let's seek'n'load it */ | |
3523 | for (c = cs; c < cs + h->n_config; c++) | |
3524 | if (c->mailbox == mailbox && c->function == 0) | |
3525 | break; | |
3526 | ||
3527 | for (a = 0; a < c->n_blocks; a++) { | |
3528 | b = &bs[c->block_list[a]]; | |
3529 | if (b->type == ZBLOCK_FPGA) { | |
3530 | if (fpga != NULL) | |
3531 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3532 | b->size); | |
3533 | } else { | |
3534 | if (base != NULL) | |
3535 | memcpy_toio(base + b->ram_offset, | |
3536 | ptr + b->file_offset, b->size); | |
3537 | } | |
3538 | } | |
3539 | #undef BAD_FW | |
3540 | return 0; | |
3541 | } | |
3542 | ||
3543 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, | |
3544 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) | |
3545 | { | |
3546 | const struct firmware *fw; | |
3547 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3548 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3549 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3550 | void __iomem *tmp; |
963118ee | 3551 | u32 mailbox, status, nchan; |
054f5b0a JS |
3552 | unsigned int i; |
3553 | int retval; | |
3554 | ||
3555 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3556 | if (retval) { | |
3557 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3558 | goto err; | |
3559 | } | |
3560 | ||
3561 | /* Check whether the firmware is already loaded and running. If | |
3562 | positive, skip this board */ | |
2693f485 | 3563 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3564 | u32 cntval = readl(base_addr + 0x190); |
3565 | ||
3566 | udelay(100); | |
3567 | if (cntval != readl(base_addr + 0x190)) { | |
3568 | /* FW counter is working, FW is running */ | |
3569 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3570 | "Skipping board.\n"); | |
3571 | retval = 0; | |
3572 | goto err_rel; | |
3573 | } | |
3574 | } | |
3575 | ||
3576 | /* start boot */ | |
3577 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3578 | ~0x00030800UL); | |
3579 | ||
3580 | mailbox = readl(&ctl_addr->mail_box_0); | |
3581 | ||
2693f485 | 3582 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3583 | /* stops CPU and set window to beginning of RAM */ |
3584 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3585 | cy_writel(&cust->cpu_stop, 0); | |
3586 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3587 | udelay(100); | |
3588 | } | |
3589 | ||
3590 | plx_init(pdev, irq, ctl_addr); | |
3591 | ||
3592 | if (mailbox != 0) { | |
3593 | /* load FPGA */ | |
3594 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3595 | base_addr); | |
3596 | if (retval) | |
3597 | goto err_rel; | |
2693f485 | 3598 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3599 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3600 | "not loaded\n"); | |
3601 | goto err_rel; | |
3602 | } | |
3603 | } | |
3604 | ||
3605 | /* stops CPU and set window to beginning of RAM */ | |
3606 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3607 | cy_writel(&cust->cpu_stop, 0); | |
3608 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3609 | udelay(100); | |
3610 | ||
3611 | /* clear memory */ | |
c4923b4f | 3612 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3613 | cy_writeb(tmp, 255); |
3614 | if (mailbox != 0) { | |
3615 | /* set window to last 512K of RAM */ | |
3616 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3617 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3618 | cy_writeb(tmp, 255); |
3619 | /* set window to beginning of RAM */ | |
3620 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3621 | } |
3622 | ||
3623 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3624 | release_firmware(fw); | |
3625 | if (retval) | |
3626 | goto err; | |
3627 | ||
3628 | /* finish boot and start boards */ | |
3629 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3630 | cy_writel(&cust->cpu_start, 0); | |
3631 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3632 | i = 0; | |
3633 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3634 | msleep(100); | |
3635 | if (status != ZFIRM_ID) { | |
3636 | if (status == ZFIRM_HLT) { | |
3637 | dev_err(&pdev->dev, "you need an external power supply " | |
3638 | "for this number of ports. Firmware halted and " | |
3639 | "board reset.\n"); | |
3640 | retval = -EIO; | |
3641 | goto err; | |
3642 | } | |
3643 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3644 | "some more time\n", status); | |
3645 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3646 | i++ < 200) | |
3647 | msleep(100); | |
3648 | if (status != ZFIRM_ID) { | |
3649 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3650 | "Giving up. (fid->signature = 0x%x)\n", | |
3651 | status); | |
3652 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3653 | "upgrading the FW, please power cycle the " | |
3654 | "system before loading the new FW to the " | |
3655 | "Cyclades-Z.\n"); | |
3656 | ||
2693f485 | 3657 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3658 | plx_init(pdev, irq, ctl_addr); |
3659 | ||
3660 | retval = -EIO; | |
3661 | goto err; | |
3662 | } | |
3663 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3664 | i / 10); | |
3665 | } | |
3666 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3667 | ||
3668 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3669 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3670 | base_addr + readl(&fid->zfwctrl_addr)); | |
3671 | ||
963118ee | 3672 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3673 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3674 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3675 | |
963118ee | 3676 | if (nchan == 0) { |
054f5b0a JS |
3677 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3678 | "check the connection between the Z host card and the " | |
3679 | "serial expanders.\n"); | |
3680 | ||
2693f485 | 3681 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3682 | plx_init(pdev, irq, ctl_addr); |
3683 | ||
3684 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3685 | "reset.\n"); | |
3686 | retval = 0; | |
3687 | goto err; | |
3688 | } | |
3689 | ||
3690 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3691 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3692 | ||
3693 | /* | |
3694 | Early firmware failed to start looking for commands. | |
3695 | This enables firmware interrupts for those commands. | |
3696 | */ | |
3697 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3698 | (1 << 17)); | |
3699 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3700 | 0x00030800UL); | |
3701 | ||
963118ee | 3702 | return nchan; |
054f5b0a JS |
3703 | err_rel: |
3704 | release_firmware(fw); | |
3705 | err: | |
3706 | return retval; | |
1da177e4 LT |
3707 | } |
3708 | ||
58936d8d JS |
3709 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
3710 | const struct pci_device_id *ent) | |
1da177e4 | 3711 | { |
3137553d JS |
3712 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3713 | char *card_name = NULL; | |
101b8159 | 3714 | u32 uninitialized_var(mailbox); |
3137553d JS |
3715 | unsigned int device_id, nchan = 0, card_no, i; |
3716 | unsigned char plx_ver; | |
3717 | int retval, irq; | |
02f1175c | 3718 | |
58936d8d JS |
3719 | retval = pci_enable_device(pdev); |
3720 | if (retval) { | |
3721 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3722 | goto err; |
58936d8d | 3723 | } |
1da177e4 | 3724 | |
58936d8d | 3725 | /* read PCI configuration area */ |
3137553d | 3726 | irq = pdev->irq; |
58936d8d | 3727 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3728 | |
3137553d JS |
3729 | #if defined(__alpha__) |
3730 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3731 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3732 | "addresses on Alpha systems.\n"); | |
3733 | retval = -EIO; | |
3734 | goto err_dis; | |
3735 | } | |
3736 | #endif | |
3737 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3738 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3739 | "addresses\n"); | |
3740 | retval = -EIO; | |
3741 | goto err_dis; | |
3742 | } | |
3743 | ||
3744 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3745 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3746 | "it...\n"); | |
3747 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3748 | } | |
3749 | ||
3750 | retval = pci_request_regions(pdev, "cyclades"); | |
3751 | if (retval) { | |
3752 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3753 | goto err_dis; | |
3754 | } | |
3755 | ||
3756 | retval = -EIO; | |
58936d8d JS |
3757 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3758 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3759 | card_name = "Cyclom-Y"; |
1da177e4 | 3760 | |
24e6fd4c JS |
3761 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3762 | CyPCI_Yctl); | |
3137553d JS |
3763 | if (addr0 == NULL) { |
3764 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3765 | goto err_reg; | |
58936d8d | 3766 | } |
24e6fd4c JS |
3767 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3768 | CyPCI_Ywin); | |
3137553d JS |
3769 | if (addr2 == NULL) { |
3770 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3771 | goto err_unmap; | |
58936d8d | 3772 | } |
1da177e4 | 3773 | |
3137553d JS |
3774 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3775 | if (nchan == 0) { | |
21719191 JS |
3776 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3777 | "Serial-Modules\n"); | |
c847d47c | 3778 | goto err_unmap; |
58936d8d | 3779 | } |
58936d8d | 3780 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3781 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3782 | |
24e6fd4c JS |
3783 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3784 | CyPCI_Zctl); | |
3137553d JS |
3785 | if (addr0 == NULL) { |
3786 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3787 | goto err_reg; | |
3788 | } | |
58936d8d JS |
3789 | |
3790 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3791 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3792 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3793 | |
054f5b0a | 3794 | plx_init(pdev, irq, addr0); |
02f1175c | 3795 | |
101b8159 | 3796 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3797 | |
24e6fd4c JS |
3798 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3799 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3800 | if (addr2 == NULL) { |
3801 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3802 | goto err_unmap; | |
58936d8d JS |
3803 | } |
3804 | ||
3805 | if (mailbox == ZE_V1) { | |
3137553d | 3806 | card_name = "Cyclades-Ze"; |
58936d8d | 3807 | } else { |
3137553d | 3808 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3809 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3810 | if (mailbox == ZO_V1) { |
3811 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3812 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3813 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3814 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3815 | fpga_id)), (ulong)(0xff & | |
3816 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3817 | fpga_version))); | |
3818 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3819 | } else { | |
3820 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3821 | "Cyclades-Z board. FPGA not loaded\n"); | |
3822 | } | |
1da177e4 | 3823 | #endif |
3137553d JS |
3824 | /* The following clears the firmware id word. This |
3825 | ensures that the driver will not attempt to talk to | |
3826 | the board until it has been properly initialized. | |
3827 | */ | |
3828 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
3829 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 3830 | } |
ace08c3c JS |
3831 | |
3832 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 3833 | if (retval <= 0) |
ace08c3c | 3834 | goto err_unmap; |
963118ee | 3835 | nchan = retval; |
3137553d JS |
3836 | } |
3837 | ||
3838 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
3839 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3840 | "channels are available. Change NR_PORTS in " | |
3841 | "cyclades.c and recompile kernel.\n"); | |
3842 | goto err_unmap; | |
3843 | } | |
3844 | /* fill the next cy_card structure available */ | |
3845 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
3846 | if (cy_card[card_no].base_addr == NULL) | |
3847 | break; | |
3848 | } | |
3849 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
3850 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3851 | "more cards can be used. Change NR_CARDS in " | |
3852 | "cyclades.c and recompile kernel.\n"); | |
3853 | goto err_unmap; | |
3854 | } | |
3855 | ||
3856 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
3857 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3858 | /* allocate IRQ */ | |
3859 | retval = request_irq(irq, cyy_interrupt, | |
3860 | IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); | |
3861 | if (retval) { | |
3862 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
3863 | goto err_unmap; | |
58936d8d | 3864 | } |
963118ee | 3865 | cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 3866 | } else { |
f0eefdc3 JS |
3867 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
3868 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3869 | ||
3870 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3871 | ||
101b8159 JS |
3872 | cy_card[card_no].hw_ver = mailbox; |
3873 | cy_card[card_no].num_chips = (unsigned int)-1; | |
f0eefdc3 | 3874 | cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; |
02f1175c | 3875 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 3876 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
3877 | if (irq != 0 && irq != 255) { |
3878 | retval = request_irq(irq, cyz_interrupt, | |
58936d8d | 3879 | IRQF_SHARED, "Cyclades-Z", |
3137553d | 3880 | &cy_card[card_no]); |
58936d8d | 3881 | if (retval) { |
21719191 | 3882 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 3883 | goto err_unmap; |
02f1175c | 3884 | } |
58936d8d | 3885 | } |
02f1175c | 3886 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 3887 | } |
02f1175c | 3888 | |
3137553d JS |
3889 | /* set cy_card */ |
3890 | cy_card[card_no].base_addr = addr2; | |
97e87f8e | 3891 | cy_card[card_no].ctl_addr.p9050 = addr0; |
3137553d JS |
3892 | cy_card[card_no].irq = irq; |
3893 | cy_card[card_no].bus_index = 1; | |
3894 | cy_card[card_no].first_line = cy_next_channel; | |
963118ee | 3895 | cy_card[card_no].nports = nchan; |
3137553d JS |
3896 | retval = cy_init_card(&cy_card[card_no]); |
3897 | if (retval) | |
3898 | goto err_null; | |
58936d8d | 3899 | |
3137553d | 3900 | pci_set_drvdata(pdev, &cy_card[card_no]); |
58936d8d | 3901 | |
3137553d JS |
3902 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3903 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3904 | /* enable interrupts in the PCI interface */ | |
3905 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
3906 | switch (plx_ver) { | |
3907 | case PLX_9050: | |
3137553d JS |
3908 | cy_writeb(addr0 + 0x4c, 0x43); |
3909 | break; | |
3910 | ||
3911 | case PLX_9060: | |
3912 | case PLX_9080: | |
3913 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
3914 | { |
3915 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
3916 | plx_init(pdev, irq, ctl_addr); | |
3917 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
3918 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
3919 | break; |
3920 | } | |
97e87f8e | 3921 | } |
58936d8d JS |
3922 | } |
3923 | ||
3137553d JS |
3924 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
3925 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
3926 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) | |
3927 | tty_register_device(cy_serial_driver, i, &pdev->dev); | |
3928 | cy_next_channel += nchan; | |
3929 | ||
58936d8d | 3930 | return 0; |
3137553d JS |
3931 | err_null: |
3932 | cy_card[card_no].base_addr = NULL; | |
3933 | free_irq(irq, &cy_card[card_no]); | |
3934 | err_unmap: | |
24e6fd4c | 3935 | iounmap(addr0); |
3137553d | 3936 | if (addr2) |
24e6fd4c | 3937 | iounmap(addr2); |
3137553d JS |
3938 | err_reg: |
3939 | pci_release_regions(pdev); | |
3940 | err_dis: | |
3941 | pci_disable_device(pdev); | |
3942 | err: | |
3943 | return retval; | |
58936d8d | 3944 | } |
58936d8d | 3945 | |
6747cd93 | 3946 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 3947 | { |
38d09093 | 3948 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 3949 | unsigned int i; |
38d09093 | 3950 | |
85c93fa9 | 3951 | /* non-Z with old PLX */ |
2693f485 | 3952 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 3953 | PLX_9050) |
97e87f8e | 3954 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
3955 | else |
3956 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3957 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 3958 | #endif |
97e87f8e JS |
3959 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
3960 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
3961 | ~0x0900); | |
85c93fa9 | 3962 | |
24e6fd4c | 3963 | iounmap(cinfo->base_addr); |
97e87f8e JS |
3964 | if (cinfo->ctl_addr.p9050) |
3965 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
3966 | if (cinfo->irq |
3967 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3968 | && !cy_is_Z(cinfo) |
38d09093 JS |
3969 | #endif /* CONFIG_CYZ_INTR */ |
3970 | ) | |
3971 | free_irq(cinfo->irq, cinfo); | |
3972 | pci_release_regions(pdev); | |
3973 | ||
3974 | cinfo->base_addr = NULL; | |
6ad1ccc1 JS |
3975 | for (i = cinfo->first_line; i < cinfo->first_line + |
3976 | cinfo->nports; i++) | |
3977 | tty_unregister_device(cy_serial_driver, i); | |
dd025c0c JS |
3978 | cinfo->nports = 0; |
3979 | kfree(cinfo->ports); | |
38d09093 JS |
3980 | } |
3981 | ||
6747cd93 JS |
3982 | static struct pci_driver cy_pci_driver = { |
3983 | .name = "cyclades", | |
3984 | .id_table = cy_pci_dev_id, | |
3985 | .probe = cy_pci_probe, | |
3986 | .remove = __devexit_p(cy_pci_remove) | |
3987 | }; | |
3988 | #endif | |
3989 | ||
444697d6 | 3990 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 3991 | { |
02f1175c | 3992 | struct cyclades_port *info; |
dd025c0c | 3993 | unsigned int i, j; |
02f1175c JS |
3994 | __u32 cur_jifs = jiffies; |
3995 | ||
444697d6 | 3996 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
3997 | "IdleIn Overruns Ldisc\n"); |
3998 | ||
02f1175c | 3999 | /* Output one line for each known port */ |
dd025c0c JS |
4000 | for (i = 0; i < NR_CARDS; i++) |
4001 | for (j = 0; j < cy_card[i].nports; j++) { | |
4002 | info = &cy_card[i].ports[j]; | |
4003 | ||
d13549f8 JS |
4004 | if (info->port.count) { |
4005 | /* XXX is the ldisc num worth this? */ | |
4006 | struct tty_struct *tty; | |
4007 | struct tty_ldisc *ld; | |
4008 | int num = 0; | |
4009 | tty = tty_port_tty_get(&info->port); | |
4010 | if (tty) { | |
4011 | ld = tty_ldisc_ref(tty); | |
4012 | if (ld) { | |
4013 | num = ld->ops->num; | |
4014 | tty_ldisc_deref(ld); | |
4015 | } | |
4016 | tty_kref_put(tty); | |
4017 | } | |
444697d6 | 4018 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 4019 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
4020 | (cur_jifs - info->idle_stats.in_use) / |
4021 | HZ, info->idle_stats.xmit_bytes, | |
4022 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
4023 | HZ, info->idle_stats.recv_bytes, | |
4024 | (cur_jifs - info->idle_stats.recv_idle)/ | |
4025 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
4026 | num); |
4027 | } else | |
444697d6 | 4028 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
4029 | "%10lu %8lu %9lu %6ld\n", |
4030 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 4031 | } |
444697d6 AD |
4032 | return 0; |
4033 | } | |
4034 | ||
4035 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
4036 | { | |
4037 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
4038 | } |
4039 | ||
444697d6 AD |
4040 | static const struct file_operations cyclades_proc_fops = { |
4041 | .owner = THIS_MODULE, | |
4042 | .open = cyclades_proc_open, | |
4043 | .read = seq_read, | |
4044 | .llseek = seq_lseek, | |
4045 | .release = single_release, | |
4046 | }; | |
4047 | ||
1da177e4 LT |
4048 | /* The serial driver boot-time initialization code! |
4049 | Hardware I/O ports are mapped to character special devices on a | |
4050 | first found, first allocated manner. That is, this code searches | |
4051 | for Cyclom cards in the system. As each is found, it is probed | |
4052 | to discover how many chips (and thus how many ports) are present. | |
4053 | These ports are mapped to the tty ports 32 and upward in monotonic | |
4054 | fashion. If an 8-port card is replaced with a 16-port card, the | |
4055 | port mapping on a following card will shift. | |
4056 | ||
4057 | This approach is different from what is used in the other serial | |
4058 | device driver because the Cyclom is more properly a multiplexer, | |
4059 | not just an aggregation of serial ports on one card. | |
4060 | ||
4061 | If there are more cards with more ports than have been | |
4062 | statically allocated above, a warning is printed and the | |
4063 | extra ports are ignored. | |
4064 | */ | |
4065 | ||
b68e31d0 | 4066 | static const struct tty_operations cy_ops = { |
02f1175c JS |
4067 | .open = cy_open, |
4068 | .close = cy_close, | |
4069 | .write = cy_write, | |
4070 | .put_char = cy_put_char, | |
4071 | .flush_chars = cy_flush_chars, | |
4072 | .write_room = cy_write_room, | |
4073 | .chars_in_buffer = cy_chars_in_buffer, | |
4074 | .flush_buffer = cy_flush_buffer, | |
4075 | .ioctl = cy_ioctl, | |
4076 | .throttle = cy_throttle, | |
4077 | .unthrottle = cy_unthrottle, | |
4078 | .set_termios = cy_set_termios, | |
4079 | .stop = cy_stop, | |
4080 | .start = cy_start, | |
4081 | .hangup = cy_hangup, | |
4082 | .break_ctl = cy_break, | |
4083 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4084 | .tiocmget = cy_tiocmget, |
4085 | .tiocmset = cy_tiocmset, | |
0587102c | 4086 | .get_icount = cy_get_icount, |
444697d6 | 4087 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
4088 | }; |
4089 | ||
02f1175c | 4090 | static int __init cy_init(void) |
1da177e4 | 4091 | { |
dd025c0c | 4092 | unsigned int nboards; |
9dacf3b2 | 4093 | int retval = -ENOMEM; |
02f1175c JS |
4094 | |
4095 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4096 | if (!cy_serial_driver) | |
9dacf3b2 | 4097 | goto err; |
21719191 | 4098 | |
64a14b51 | 4099 | printk(KERN_INFO "Cyclades driver " CY_VERSION "\n"); |
02f1175c JS |
4100 | |
4101 | /* Initialize the tty_driver structure */ | |
4102 | ||
4103 | cy_serial_driver->owner = THIS_MODULE; | |
4104 | cy_serial_driver->driver_name = "cyclades"; | |
4105 | cy_serial_driver->name = "ttyC"; | |
4106 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4107 | cy_serial_driver->minor_start = 0; | |
4108 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4109 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4110 | cy_serial_driver->init_termios = tty_std_termios; | |
4111 | cy_serial_driver->init_termios.c_cflag = | |
4112 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4113 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4114 | tty_set_operations(cy_serial_driver, &cy_ops); |
4115 | ||
9dacf3b2 JS |
4116 | retval = tty_register_driver(cy_serial_driver); |
4117 | if (retval) { | |
4118 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4119 | goto err_frtty; | |
4120 | } | |
02f1175c | 4121 | |
02f1175c JS |
4122 | /* the code below is responsible to find the boards. Each different |
4123 | type of board has its own detection routine. If a board is found, | |
4124 | the next cy_card structure available is set by the detection | |
4125 | routine. These functions are responsible for checking the | |
4126 | availability of cy_card and cy_port data structures and updating | |
4127 | the cy_next_channel. */ | |
4128 | ||
4129 | /* look for isa boards */ | |
14a55a67 | 4130 | nboards = cy_detect_isa(); |
02f1175c | 4131 | |
6747cd93 | 4132 | #ifdef CONFIG_PCI |
02f1175c | 4133 | /* look for pci boards */ |
6747cd93 | 4134 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4135 | if (retval && !nboards) { |
4136 | tty_unregister_driver(cy_serial_driver); | |
4137 | goto err_frtty; | |
4138 | } | |
6747cd93 | 4139 | #endif |
9dacf3b2 JS |
4140 | |
4141 | return 0; | |
9dacf3b2 JS |
4142 | err_frtty: |
4143 | put_tty_driver(cy_serial_driver); | |
4144 | err: | |
4145 | return retval; | |
02f1175c | 4146 | } /* cy_init */ |
1da177e4 | 4147 | |
02f1175c | 4148 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4149 | { |
dd025c0c | 4150 | struct cyclades_card *card; |
65f76a82 | 4151 | unsigned int i, e1; |
1da177e4 LT |
4152 | |
4153 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4154 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4155 | #endif /* CONFIG_CYZ_INTR */ |
4156 | ||
15ed6cc0 AC |
4157 | e1 = tty_unregister_driver(cy_serial_driver); |
4158 | if (e1) | |
21719191 JS |
4159 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4160 | "driver(%d)\n", e1); | |
1da177e4 | 4161 | |
6747cd93 JS |
4162 | #ifdef CONFIG_PCI |
4163 | pci_unregister_driver(&cy_pci_driver); | |
4164 | #endif | |
4165 | ||
02f1175c | 4166 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4167 | card = &cy_card[i]; |
4168 | if (card->base_addr) { | |
85c93fa9 | 4169 | /* clear interrupt */ |
dd025c0c JS |
4170 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4171 | iounmap(card->base_addr); | |
97e87f8e JS |
4172 | if (card->ctl_addr.p9050) |
4173 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4174 | if (card->irq |
1da177e4 | 4175 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4176 | && !cy_is_Z(card) |
1da177e4 | 4177 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4178 | ) |
dd025c0c | 4179 | free_irq(card->irq, card); |
65f76a82 | 4180 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4181 | card->nports; e1++) |
6ad1ccc1 | 4182 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4183 | kfree(card->ports); |
02f1175c JS |
4184 | } |
4185 | } | |
f2462bfe JS |
4186 | |
4187 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4188 | } /* cy_cleanup_module */ |
4189 | ||
4190 | module_init(cy_init); | |
4191 | module_exit(cy_cleanup_module); | |
4192 | ||
4193 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4194 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4195 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |
e6c4ef98 | 4196 | MODULE_FIRMWARE("cyzfirm.bin"); |