Commit | Line | Data |
---|---|---|
edb33667 TH |
1 | /* |
2 | * sata_sil24.c - Driver for Silicon Image 3124/3132 SATA-2 controllers | |
3 | * | |
4 | * Copyright 2005 Tejun Heo | |
5 | * | |
6 | * Based on preview driver from Silicon Image. | |
7 | * | |
edb33667 TH |
8 | * This program is free software; you can redistribute it and/or modify it |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/kernel.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/pci.h> | |
23 | #include <linux/blkdev.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/dma-mapping.h> | |
a9524a76 | 27 | #include <linux/device.h> |
edb33667 | 28 | #include <scsi/scsi_host.h> |
193515d5 | 29 | #include <scsi/scsi_cmnd.h> |
edb33667 | 30 | #include <linux/libata.h> |
edb33667 TH |
31 | |
32 | #define DRV_NAME "sata_sil24" | |
3454dc69 | 33 | #define DRV_VERSION "1.1" |
edb33667 | 34 | |
edb33667 TH |
35 | /* |
36 | * Port request block (PRB) 32 bytes | |
37 | */ | |
38 | struct sil24_prb { | |
b4772574 AD |
39 | __le16 ctrl; |
40 | __le16 prot; | |
41 | __le32 rx_cnt; | |
edb33667 TH |
42 | u8 fis[6 * 4]; |
43 | }; | |
44 | ||
45 | /* | |
46 | * Scatter gather entry (SGE) 16 bytes | |
47 | */ | |
48 | struct sil24_sge { | |
b4772574 AD |
49 | __le64 addr; |
50 | __le32 cnt; | |
51 | __le32 flags; | |
edb33667 TH |
52 | }; |
53 | ||
54 | /* | |
55 | * Port multiplier | |
56 | */ | |
57 | struct sil24_port_multiplier { | |
b4772574 AD |
58 | __le32 diag; |
59 | __le32 sactive; | |
edb33667 TH |
60 | }; |
61 | ||
62 | enum { | |
0d5ff566 TH |
63 | SIL24_HOST_BAR = 0, |
64 | SIL24_PORT_BAR = 2, | |
65 | ||
93e2618e TH |
66 | /* sil24 fetches in chunks of 64bytes. The first block |
67 | * contains the PRB and two SGEs. From the second block, it's | |
68 | * consisted of four SGEs and called SGT. Calculate the | |
69 | * number of SGTs that fit into one page. | |
70 | */ | |
71 | SIL24_PRB_SZ = sizeof(struct sil24_prb) | |
72 | + 2 * sizeof(struct sil24_sge), | |
73 | SIL24_MAX_SGT = (PAGE_SIZE - SIL24_PRB_SZ) | |
74 | / (4 * sizeof(struct sil24_sge)), | |
75 | ||
76 | /* This will give us one unused SGEs for ATA. This extra SGE | |
77 | * will be used to store CDB for ATAPI devices. | |
78 | */ | |
79 | SIL24_MAX_SGE = 4 * SIL24_MAX_SGT + 1, | |
80 | ||
edb33667 TH |
81 | /* |
82 | * Global controller registers (128 bytes @ BAR0) | |
83 | */ | |
84 | /* 32 bit regs */ | |
85 | HOST_SLOT_STAT = 0x00, /* 32 bit slot stat * 4 */ | |
86 | HOST_CTRL = 0x40, | |
87 | HOST_IRQ_STAT = 0x44, | |
88 | HOST_PHY_CFG = 0x48, | |
89 | HOST_BIST_CTRL = 0x50, | |
90 | HOST_BIST_PTRN = 0x54, | |
91 | HOST_BIST_STAT = 0x58, | |
92 | HOST_MEM_BIST_STAT = 0x5c, | |
93 | HOST_FLASH_CMD = 0x70, | |
94 | /* 8 bit regs */ | |
95 | HOST_FLASH_DATA = 0x74, | |
96 | HOST_TRANSITION_DETECT = 0x75, | |
97 | HOST_GPIO_CTRL = 0x76, | |
98 | HOST_I2C_ADDR = 0x78, /* 32 bit */ | |
99 | HOST_I2C_DATA = 0x7c, | |
100 | HOST_I2C_XFER_CNT = 0x7e, | |
101 | HOST_I2C_CTRL = 0x7f, | |
102 | ||
103 | /* HOST_SLOT_STAT bits */ | |
104 | HOST_SSTAT_ATTN = (1 << 31), | |
105 | ||
7dafc3fd TH |
106 | /* HOST_CTRL bits */ |
107 | HOST_CTRL_M66EN = (1 << 16), /* M66EN PCI bus signal */ | |
108 | HOST_CTRL_TRDY = (1 << 17), /* latched PCI TRDY */ | |
109 | HOST_CTRL_STOP = (1 << 18), /* latched PCI STOP */ | |
110 | HOST_CTRL_DEVSEL = (1 << 19), /* latched PCI DEVSEL */ | |
111 | HOST_CTRL_REQ64 = (1 << 20), /* latched PCI REQ64 */ | |
d2298dca | 112 | HOST_CTRL_GLOBAL_RST = (1 << 31), /* global reset */ |
7dafc3fd | 113 | |
edb33667 TH |
114 | /* |
115 | * Port registers | |
116 | * (8192 bytes @ +0x0000, +0x2000, +0x4000 and +0x6000 @ BAR2) | |
117 | */ | |
118 | PORT_REGS_SIZE = 0x2000, | |
135da345 | 119 | |
28c8f3b4 | 120 | PORT_LRAM = 0x0000, /* 31 LRAM slots and PMP regs */ |
135da345 | 121 | PORT_LRAM_SLOT_SZ = 0x0080, /* 32 bytes PRB + 2 SGE, ACT... */ |
edb33667 | 122 | |
28c8f3b4 | 123 | PORT_PMP = 0x0f80, /* 8 bytes PMP * 16 (128 bytes) */ |
c0c55908 TH |
124 | PORT_PMP_STATUS = 0x0000, /* port device status offset */ |
125 | PORT_PMP_QACTIVE = 0x0004, /* port device QActive offset */ | |
126 | PORT_PMP_SIZE = 0x0008, /* 8 bytes per PMP */ | |
127 | ||
edb33667 | 128 | /* 32 bit regs */ |
83bbecc9 TH |
129 | PORT_CTRL_STAT = 0x1000, /* write: ctrl-set, read: stat */ |
130 | PORT_CTRL_CLR = 0x1004, /* write: ctrl-clear */ | |
131 | PORT_IRQ_STAT = 0x1008, /* high: status, low: interrupt */ | |
132 | PORT_IRQ_ENABLE_SET = 0x1010, /* write: enable-set */ | |
133 | PORT_IRQ_ENABLE_CLR = 0x1014, /* write: enable-clear */ | |
edb33667 | 134 | PORT_ACTIVATE_UPPER_ADDR= 0x101c, |
83bbecc9 TH |
135 | PORT_EXEC_FIFO = 0x1020, /* command execution fifo */ |
136 | PORT_CMD_ERR = 0x1024, /* command error number */ | |
edb33667 TH |
137 | PORT_FIS_CFG = 0x1028, |
138 | PORT_FIFO_THRES = 0x102c, | |
139 | /* 16 bit regs */ | |
140 | PORT_DECODE_ERR_CNT = 0x1040, | |
141 | PORT_DECODE_ERR_THRESH = 0x1042, | |
142 | PORT_CRC_ERR_CNT = 0x1044, | |
143 | PORT_CRC_ERR_THRESH = 0x1046, | |
144 | PORT_HSHK_ERR_CNT = 0x1048, | |
145 | PORT_HSHK_ERR_THRESH = 0x104a, | |
146 | /* 32 bit regs */ | |
147 | PORT_PHY_CFG = 0x1050, | |
148 | PORT_SLOT_STAT = 0x1800, | |
149 | PORT_CMD_ACTIVATE = 0x1c00, /* 64 bit cmd activate * 31 (248 bytes) */ | |
c0c55908 | 150 | PORT_CONTEXT = 0x1e04, |
edb33667 TH |
151 | PORT_EXEC_DIAG = 0x1e00, /* 32bit exec diag * 16 (64 bytes, 0-10 used on 3124) */ |
152 | PORT_PSD_DIAG = 0x1e40, /* 32bit psd diag * 16 (64 bytes, 0-8 used on 3124) */ | |
153 | PORT_SCONTROL = 0x1f00, | |
154 | PORT_SSTATUS = 0x1f04, | |
155 | PORT_SERROR = 0x1f08, | |
156 | PORT_SACTIVE = 0x1f0c, | |
157 | ||
158 | /* PORT_CTRL_STAT bits */ | |
159 | PORT_CS_PORT_RST = (1 << 0), /* port reset */ | |
160 | PORT_CS_DEV_RST = (1 << 1), /* device reset */ | |
161 | PORT_CS_INIT = (1 << 2), /* port initialize */ | |
162 | PORT_CS_IRQ_WOC = (1 << 3), /* interrupt write one to clear */ | |
d10cb35a | 163 | PORT_CS_CDB16 = (1 << 5), /* 0=12b cdb, 1=16b cdb */ |
28c8f3b4 | 164 | PORT_CS_PMP_RESUME = (1 << 6), /* PMP resume */ |
e382eb1d | 165 | PORT_CS_32BIT_ACTV = (1 << 10), /* 32-bit activation */ |
28c8f3b4 | 166 | PORT_CS_PMP_EN = (1 << 13), /* port multiplier enable */ |
e382eb1d | 167 | PORT_CS_RDY = (1 << 31), /* port ready to accept commands */ |
edb33667 TH |
168 | |
169 | /* PORT_IRQ_STAT/ENABLE_SET/CLR */ | |
170 | /* bits[11:0] are masked */ | |
171 | PORT_IRQ_COMPLETE = (1 << 0), /* command(s) completed */ | |
172 | PORT_IRQ_ERROR = (1 << 1), /* command execution error */ | |
173 | PORT_IRQ_PORTRDY_CHG = (1 << 2), /* port ready change */ | |
174 | PORT_IRQ_PWR_CHG = (1 << 3), /* power management change */ | |
175 | PORT_IRQ_PHYRDY_CHG = (1 << 4), /* PHY ready change */ | |
176 | PORT_IRQ_COMWAKE = (1 << 5), /* COMWAKE received */ | |
7dafc3fd TH |
177 | PORT_IRQ_UNK_FIS = (1 << 6), /* unknown FIS received */ |
178 | PORT_IRQ_DEV_XCHG = (1 << 7), /* device exchanged */ | |
179 | PORT_IRQ_8B10B = (1 << 8), /* 8b/10b decode error threshold */ | |
180 | PORT_IRQ_CRC = (1 << 9), /* CRC error threshold */ | |
181 | PORT_IRQ_HANDSHAKE = (1 << 10), /* handshake error threshold */ | |
3b9f1d0f | 182 | PORT_IRQ_SDB_NOTIFY = (1 << 11), /* SDB notify received */ |
edb33667 | 183 | |
88ce7550 | 184 | DEF_PORT_IRQ = PORT_IRQ_COMPLETE | PORT_IRQ_ERROR | |
0542925b | 185 | PORT_IRQ_PHYRDY_CHG | PORT_IRQ_DEV_XCHG | |
854c73a2 | 186 | PORT_IRQ_UNK_FIS | PORT_IRQ_SDB_NOTIFY, |
88ce7550 | 187 | |
edb33667 TH |
188 | /* bits[27:16] are unmasked (raw) */ |
189 | PORT_IRQ_RAW_SHIFT = 16, | |
190 | PORT_IRQ_MASKED_MASK = 0x7ff, | |
191 | PORT_IRQ_RAW_MASK = (0x7ff << PORT_IRQ_RAW_SHIFT), | |
192 | ||
193 | /* ENABLE_SET/CLR specific, intr steering - 2 bit field */ | |
194 | PORT_IRQ_STEER_SHIFT = 30, | |
195 | PORT_IRQ_STEER_MASK = (3 << PORT_IRQ_STEER_SHIFT), | |
196 | ||
197 | /* PORT_CMD_ERR constants */ | |
198 | PORT_CERR_DEV = 1, /* Error bit in D2H Register FIS */ | |
199 | PORT_CERR_SDB = 2, /* Error bit in SDB FIS */ | |
200 | PORT_CERR_DATA = 3, /* Error in data FIS not detected by dev */ | |
201 | PORT_CERR_SEND = 4, /* Initial cmd FIS transmission failure */ | |
202 | PORT_CERR_INCONSISTENT = 5, /* Protocol mismatch */ | |
203 | PORT_CERR_DIRECTION = 6, /* Data direction mismatch */ | |
204 | PORT_CERR_UNDERRUN = 7, /* Ran out of SGEs while writing */ | |
205 | PORT_CERR_OVERRUN = 8, /* Ran out of SGEs while reading */ | |
206 | PORT_CERR_PKT_PROT = 11, /* DIR invalid in 1st PIO setup of ATAPI */ | |
207 | PORT_CERR_SGT_BOUNDARY = 16, /* PLD ecode 00 - SGT not on qword boundary */ | |
208 | PORT_CERR_SGT_TGTABRT = 17, /* PLD ecode 01 - target abort */ | |
209 | PORT_CERR_SGT_MSTABRT = 18, /* PLD ecode 10 - master abort */ | |
210 | PORT_CERR_SGT_PCIPERR = 19, /* PLD ecode 11 - PCI parity err while fetching SGT */ | |
211 | PORT_CERR_CMD_BOUNDARY = 24, /* ctrl[15:13] 001 - PRB not on qword boundary */ | |
212 | PORT_CERR_CMD_TGTABRT = 25, /* ctrl[15:13] 010 - target abort */ | |
213 | PORT_CERR_CMD_MSTABRT = 26, /* ctrl[15:13] 100 - master abort */ | |
214 | PORT_CERR_CMD_PCIPERR = 27, /* ctrl[15:13] 110 - PCI parity err while fetching PRB */ | |
215 | PORT_CERR_XFR_UNDEF = 32, /* PSD ecode 00 - undefined */ | |
216 | PORT_CERR_XFR_TGTABRT = 33, /* PSD ecode 01 - target abort */ | |
64008802 | 217 | PORT_CERR_XFR_MSTABRT = 34, /* PSD ecode 10 - master abort */ |
edb33667 | 218 | PORT_CERR_XFR_PCIPERR = 35, /* PSD ecode 11 - PCI prity err during transfer */ |
83bbecc9 | 219 | PORT_CERR_SENDSERVICE = 36, /* FIS received while sending service */ |
edb33667 | 220 | |
d10cb35a TH |
221 | /* bits of PRB control field */ |
222 | PRB_CTRL_PROTOCOL = (1 << 0), /* override def. ATA protocol */ | |
223 | PRB_CTRL_PACKET_READ = (1 << 4), /* PACKET cmd read */ | |
224 | PRB_CTRL_PACKET_WRITE = (1 << 5), /* PACKET cmd write */ | |
225 | PRB_CTRL_NIEN = (1 << 6), /* Mask completion irq */ | |
226 | PRB_CTRL_SRST = (1 << 7), /* Soft reset request (ign BSY?) */ | |
227 | ||
228 | /* PRB protocol field */ | |
229 | PRB_PROT_PACKET = (1 << 0), | |
230 | PRB_PROT_TCQ = (1 << 1), | |
231 | PRB_PROT_NCQ = (1 << 2), | |
232 | PRB_PROT_READ = (1 << 3), | |
233 | PRB_PROT_WRITE = (1 << 4), | |
234 | PRB_PROT_TRANSPARENT = (1 << 5), | |
235 | ||
edb33667 TH |
236 | /* |
237 | * Other constants | |
238 | */ | |
239 | SGE_TRM = (1 << 31), /* Last SGE in chain */ | |
d10cb35a TH |
240 | SGE_LNK = (1 << 30), /* linked list |
241 | Points to SGT, not SGE */ | |
242 | SGE_DRD = (1 << 29), /* discard data read (/dev/null) | |
243 | data address ignored */ | |
edb33667 | 244 | |
aee10a03 TH |
245 | SIL24_MAX_CMDS = 31, |
246 | ||
edb33667 TH |
247 | /* board id */ |
248 | BID_SIL3124 = 0, | |
249 | BID_SIL3132 = 1, | |
042c21fd | 250 | BID_SIL3131 = 2, |
edb33667 | 251 | |
9466d85b TH |
252 | /* host flags */ |
253 | SIL24_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | | |
aee10a03 | 254 | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | |
854c73a2 | 255 | ATA_FLAG_NCQ | ATA_FLAG_ACPI_SATA | |
3454dc69 | 256 | ATA_FLAG_AN | ATA_FLAG_PMP, |
0c88758b | 257 | SIL24_COMMON_LFLAGS = ATA_LFLAG_SKIP_D2H_BSY, |
37024e8e | 258 | SIL24_FLAG_PCIX_IRQ_WOC = (1 << 24), /* IRQ loss errata on PCI-X */ |
9466d85b | 259 | |
edb33667 TH |
260 | IRQ_STAT_4PORTS = 0xf, |
261 | }; | |
262 | ||
69ad185f | 263 | struct sil24_ata_block { |
edb33667 | 264 | struct sil24_prb prb; |
93e2618e | 265 | struct sil24_sge sge[SIL24_MAX_SGE]; |
edb33667 TH |
266 | }; |
267 | ||
69ad185f TH |
268 | struct sil24_atapi_block { |
269 | struct sil24_prb prb; | |
270 | u8 cdb[16]; | |
93e2618e | 271 | struct sil24_sge sge[SIL24_MAX_SGE]; |
69ad185f TH |
272 | }; |
273 | ||
274 | union sil24_cmd_block { | |
275 | struct sil24_ata_block ata; | |
276 | struct sil24_atapi_block atapi; | |
277 | }; | |
278 | ||
88ce7550 TH |
279 | static struct sil24_cerr_info { |
280 | unsigned int err_mask, action; | |
281 | const char *desc; | |
282 | } sil24_cerr_db[] = { | |
f90f0828 | 283 | [0] = { AC_ERR_DEV, 0, |
88ce7550 | 284 | "device error" }, |
f90f0828 | 285 | [PORT_CERR_DEV] = { AC_ERR_DEV, 0, |
88ce7550 | 286 | "device error via D2H FIS" }, |
f90f0828 | 287 | [PORT_CERR_SDB] = { AC_ERR_DEV, 0, |
88ce7550 TH |
288 | "device error via SDB FIS" }, |
289 | [PORT_CERR_DATA] = { AC_ERR_ATA_BUS, ATA_EH_SOFTRESET, | |
290 | "error in data FIS" }, | |
291 | [PORT_CERR_SEND] = { AC_ERR_ATA_BUS, ATA_EH_SOFTRESET, | |
292 | "failed to transmit command FIS" }, | |
293 | [PORT_CERR_INCONSISTENT] = { AC_ERR_HSM, ATA_EH_SOFTRESET, | |
294 | "protocol mismatch" }, | |
295 | [PORT_CERR_DIRECTION] = { AC_ERR_HSM, ATA_EH_SOFTRESET, | |
296 | "data directon mismatch" }, | |
297 | [PORT_CERR_UNDERRUN] = { AC_ERR_HSM, ATA_EH_SOFTRESET, | |
298 | "ran out of SGEs while writing" }, | |
299 | [PORT_CERR_OVERRUN] = { AC_ERR_HSM, ATA_EH_SOFTRESET, | |
300 | "ran out of SGEs while reading" }, | |
301 | [PORT_CERR_PKT_PROT] = { AC_ERR_HSM, ATA_EH_SOFTRESET, | |
302 | "invalid data directon for ATAPI CDB" }, | |
303 | [PORT_CERR_SGT_BOUNDARY] = { AC_ERR_SYSTEM, ATA_EH_SOFTRESET, | |
7293fa8f | 304 | "SGT not on qword boundary" }, |
88ce7550 TH |
305 | [PORT_CERR_SGT_TGTABRT] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, |
306 | "PCI target abort while fetching SGT" }, | |
307 | [PORT_CERR_SGT_MSTABRT] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
308 | "PCI master abort while fetching SGT" }, | |
309 | [PORT_CERR_SGT_PCIPERR] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
310 | "PCI parity error while fetching SGT" }, | |
311 | [PORT_CERR_CMD_BOUNDARY] = { AC_ERR_SYSTEM, ATA_EH_SOFTRESET, | |
312 | "PRB not on qword boundary" }, | |
313 | [PORT_CERR_CMD_TGTABRT] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
314 | "PCI target abort while fetching PRB" }, | |
315 | [PORT_CERR_CMD_MSTABRT] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
316 | "PCI master abort while fetching PRB" }, | |
317 | [PORT_CERR_CMD_PCIPERR] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
318 | "PCI parity error while fetching PRB" }, | |
319 | [PORT_CERR_XFR_UNDEF] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
320 | "undefined error while transferring data" }, | |
321 | [PORT_CERR_XFR_TGTABRT] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
322 | "PCI target abort while transferring data" }, | |
323 | [PORT_CERR_XFR_MSTABRT] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
324 | "PCI master abort while transferring data" }, | |
325 | [PORT_CERR_XFR_PCIPERR] = { AC_ERR_HOST_BUS, ATA_EH_SOFTRESET, | |
326 | "PCI parity error while transferring data" }, | |
327 | [PORT_CERR_SENDSERVICE] = { AC_ERR_HSM, ATA_EH_SOFTRESET, | |
328 | "FIS received while sending service FIS" }, | |
329 | }; | |
330 | ||
edb33667 TH |
331 | /* |
332 | * ap->private_data | |
333 | * | |
334 | * The preview driver always returned 0 for status. We emulate it | |
335 | * here from the previous interrupt. | |
336 | */ | |
337 | struct sil24_port_priv { | |
69ad185f | 338 | union sil24_cmd_block *cmd_block; /* 32 cmd blocks */ |
edb33667 | 339 | dma_addr_t cmd_block_dma; /* DMA base addr for them */ |
6a575fa9 | 340 | struct ata_taskfile tf; /* Cached taskfile registers */ |
23818034 | 341 | int do_port_rst; |
edb33667 TH |
342 | }; |
343 | ||
cd0d3bbc | 344 | static void sil24_dev_config(struct ata_device *dev); |
edb33667 | 345 | static u8 sil24_check_status(struct ata_port *ap); |
da3dbb17 TH |
346 | static int sil24_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val); |
347 | static int sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val); | |
7f726d12 | 348 | static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
3454dc69 | 349 | static int sil24_qc_defer(struct ata_queued_cmd *qc); |
edb33667 | 350 | static void sil24_qc_prep(struct ata_queued_cmd *qc); |
9a3d9eb0 | 351 | static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc); |
edb33667 | 352 | static void sil24_irq_clear(struct ata_port *ap); |
3454dc69 TH |
353 | static void sil24_pmp_attach(struct ata_port *ap); |
354 | static void sil24_pmp_detach(struct ata_port *ap); | |
88ce7550 TH |
355 | static void sil24_freeze(struct ata_port *ap); |
356 | static void sil24_thaw(struct ata_port *ap); | |
357 | static void sil24_error_handler(struct ata_port *ap); | |
358 | static void sil24_post_internal_cmd(struct ata_queued_cmd *qc); | |
edb33667 | 359 | static int sil24_port_start(struct ata_port *ap); |
edb33667 | 360 | static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); |
281d426c | 361 | #ifdef CONFIG_PM |
d2298dca | 362 | static int sil24_pci_device_resume(struct pci_dev *pdev); |
3454dc69 | 363 | static int sil24_port_resume(struct ata_port *ap); |
281d426c | 364 | #endif |
edb33667 | 365 | |
3b7d697d | 366 | static const struct pci_device_id sil24_pci_tbl[] = { |
54bb3a94 JG |
367 | { PCI_VDEVICE(CMD, 0x3124), BID_SIL3124 }, |
368 | { PCI_VDEVICE(INTEL, 0x3124), BID_SIL3124 }, | |
369 | { PCI_VDEVICE(CMD, 0x3132), BID_SIL3132 }, | |
722d67b6 | 370 | { PCI_VDEVICE(CMD, 0x0242), BID_SIL3132 }, |
54bb3a94 JG |
371 | { PCI_VDEVICE(CMD, 0x3131), BID_SIL3131 }, |
372 | { PCI_VDEVICE(CMD, 0x3531), BID_SIL3131 }, | |
373 | ||
1fcce839 | 374 | { } /* terminate list */ |
edb33667 TH |
375 | }; |
376 | ||
377 | static struct pci_driver sil24_pci_driver = { | |
378 | .name = DRV_NAME, | |
379 | .id_table = sil24_pci_tbl, | |
380 | .probe = sil24_init_one, | |
24dc5f33 | 381 | .remove = ata_pci_remove_one, |
281d426c | 382 | #ifdef CONFIG_PM |
d2298dca TH |
383 | .suspend = ata_pci_device_suspend, |
384 | .resume = sil24_pci_device_resume, | |
281d426c | 385 | #endif |
edb33667 TH |
386 | }; |
387 | ||
193515d5 | 388 | static struct scsi_host_template sil24_sht = { |
edb33667 TH |
389 | .module = THIS_MODULE, |
390 | .name = DRV_NAME, | |
391 | .ioctl = ata_scsi_ioctl, | |
392 | .queuecommand = ata_scsi_queuecmd, | |
aee10a03 TH |
393 | .change_queue_depth = ata_scsi_change_queue_depth, |
394 | .can_queue = SIL24_MAX_CMDS, | |
edb33667 | 395 | .this_id = ATA_SHT_THIS_ID, |
93e2618e | 396 | .sg_tablesize = SIL24_MAX_SGE, |
edb33667 TH |
397 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
398 | .emulated = ATA_SHT_EMULATED, | |
399 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
400 | .proc_name = DRV_NAME, | |
401 | .dma_boundary = ATA_DMA_BOUNDARY, | |
402 | .slave_configure = ata_scsi_slave_config, | |
ccf68c34 | 403 | .slave_destroy = ata_scsi_slave_destroy, |
edb33667 | 404 | .bios_param = ata_std_bios_param, |
edb33667 TH |
405 | }; |
406 | ||
057ace5e | 407 | static const struct ata_port_operations sil24_ops = { |
69ad185f TH |
408 | .dev_config = sil24_dev_config, |
409 | ||
edb33667 TH |
410 | .check_status = sil24_check_status, |
411 | .check_altstatus = sil24_check_status, | |
edb33667 TH |
412 | .dev_select = ata_noop_dev_select, |
413 | ||
7f726d12 TH |
414 | .tf_read = sil24_tf_read, |
415 | ||
3454dc69 | 416 | .qc_defer = sil24_qc_defer, |
edb33667 TH |
417 | .qc_prep = sil24_qc_prep, |
418 | .qc_issue = sil24_qc_issue, | |
419 | ||
edb33667 TH |
420 | .irq_clear = sil24_irq_clear, |
421 | ||
422 | .scr_read = sil24_scr_read, | |
423 | .scr_write = sil24_scr_write, | |
424 | ||
3454dc69 TH |
425 | .pmp_attach = sil24_pmp_attach, |
426 | .pmp_detach = sil24_pmp_detach, | |
3454dc69 | 427 | |
88ce7550 TH |
428 | .freeze = sil24_freeze, |
429 | .thaw = sil24_thaw, | |
430 | .error_handler = sil24_error_handler, | |
431 | .post_internal_cmd = sil24_post_internal_cmd, | |
432 | ||
edb33667 | 433 | .port_start = sil24_port_start, |
3454dc69 TH |
434 | |
435 | #ifdef CONFIG_PM | |
436 | .port_resume = sil24_port_resume, | |
437 | #endif | |
edb33667 TH |
438 | }; |
439 | ||
042c21fd | 440 | /* |
cca3974e | 441 | * Use bits 30-31 of port_flags to encode available port numbers. |
042c21fd TH |
442 | * Current maxium is 4. |
443 | */ | |
444 | #define SIL24_NPORTS2FLAG(nports) ((((unsigned)(nports) - 1) & 0x3) << 30) | |
445 | #define SIL24_FLAG2NPORTS(flag) ((((flag) >> 30) & 0x3) + 1) | |
446 | ||
4447d351 | 447 | static const struct ata_port_info sil24_port_info[] = { |
edb33667 TH |
448 | /* sil_3124 */ |
449 | { | |
cca3974e | 450 | .flags = SIL24_COMMON_FLAGS | SIL24_NPORTS2FLAG(4) | |
37024e8e | 451 | SIL24_FLAG_PCIX_IRQ_WOC, |
0c88758b | 452 | .link_flags = SIL24_COMMON_LFLAGS, |
edb33667 TH |
453 | .pio_mask = 0x1f, /* pio0-4 */ |
454 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
bf6263a8 | 455 | .udma_mask = ATA_UDMA5, /* udma0-5 */ |
edb33667 TH |
456 | .port_ops = &sil24_ops, |
457 | }, | |
2e9edbf8 | 458 | /* sil_3132 */ |
edb33667 | 459 | { |
cca3974e | 460 | .flags = SIL24_COMMON_FLAGS | SIL24_NPORTS2FLAG(2), |
0c88758b | 461 | .link_flags = SIL24_COMMON_LFLAGS, |
042c21fd TH |
462 | .pio_mask = 0x1f, /* pio0-4 */ |
463 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
bf6263a8 | 464 | .udma_mask = ATA_UDMA5, /* udma0-5 */ |
042c21fd TH |
465 | .port_ops = &sil24_ops, |
466 | }, | |
467 | /* sil_3131/sil_3531 */ | |
468 | { | |
cca3974e | 469 | .flags = SIL24_COMMON_FLAGS | SIL24_NPORTS2FLAG(1), |
0c88758b | 470 | .link_flags = SIL24_COMMON_LFLAGS, |
edb33667 TH |
471 | .pio_mask = 0x1f, /* pio0-4 */ |
472 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
bf6263a8 | 473 | .udma_mask = ATA_UDMA5, /* udma0-5 */ |
edb33667 TH |
474 | .port_ops = &sil24_ops, |
475 | }, | |
476 | }; | |
477 | ||
aee10a03 TH |
478 | static int sil24_tag(int tag) |
479 | { | |
480 | if (unlikely(ata_tag_internal(tag))) | |
481 | return 0; | |
482 | return tag; | |
483 | } | |
484 | ||
cd0d3bbc | 485 | static void sil24_dev_config(struct ata_device *dev) |
69ad185f | 486 | { |
9af5c9c9 | 487 | void __iomem *port = dev->link->ap->ioaddr.cmd_addr; |
69ad185f | 488 | |
6e7846e9 | 489 | if (dev->cdb_len == 16) |
69ad185f TH |
490 | writel(PORT_CS_CDB16, port + PORT_CTRL_STAT); |
491 | else | |
492 | writel(PORT_CS_CDB16, port + PORT_CTRL_CLR); | |
493 | } | |
494 | ||
e59f0dad | 495 | static void sil24_read_tf(struct ata_port *ap, int tag, struct ata_taskfile *tf) |
6a575fa9 | 496 | { |
0d5ff566 | 497 | void __iomem *port = ap->ioaddr.cmd_addr; |
e59f0dad | 498 | struct sil24_prb __iomem *prb; |
4b4a5eae | 499 | u8 fis[6 * 4]; |
6a575fa9 | 500 | |
e59f0dad TH |
501 | prb = port + PORT_LRAM + sil24_tag(tag) * PORT_LRAM_SLOT_SZ; |
502 | memcpy_fromio(fis, prb->fis, sizeof(fis)); | |
503 | ata_tf_from_fis(fis, tf); | |
6a575fa9 TH |
504 | } |
505 | ||
edb33667 TH |
506 | static u8 sil24_check_status(struct ata_port *ap) |
507 | { | |
6a575fa9 TH |
508 | struct sil24_port_priv *pp = ap->private_data; |
509 | return pp->tf.command; | |
edb33667 TH |
510 | } |
511 | ||
edb33667 TH |
512 | static int sil24_scr_map[] = { |
513 | [SCR_CONTROL] = 0, | |
514 | [SCR_STATUS] = 1, | |
515 | [SCR_ERROR] = 2, | |
516 | [SCR_ACTIVE] = 3, | |
517 | }; | |
518 | ||
da3dbb17 | 519 | static int sil24_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val) |
edb33667 | 520 | { |
0d5ff566 | 521 | void __iomem *scr_addr = ap->ioaddr.scr_addr; |
da3dbb17 | 522 | |
edb33667 | 523 | if (sc_reg < ARRAY_SIZE(sil24_scr_map)) { |
4b4a5eae | 524 | void __iomem *addr; |
edb33667 | 525 | addr = scr_addr + sil24_scr_map[sc_reg] * 4; |
da3dbb17 TH |
526 | *val = readl(scr_addr + sil24_scr_map[sc_reg] * 4); |
527 | return 0; | |
edb33667 | 528 | } |
da3dbb17 | 529 | return -EINVAL; |
edb33667 TH |
530 | } |
531 | ||
da3dbb17 | 532 | static int sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val) |
edb33667 | 533 | { |
0d5ff566 | 534 | void __iomem *scr_addr = ap->ioaddr.scr_addr; |
da3dbb17 | 535 | |
edb33667 | 536 | if (sc_reg < ARRAY_SIZE(sil24_scr_map)) { |
4b4a5eae | 537 | void __iomem *addr; |
edb33667 TH |
538 | addr = scr_addr + sil24_scr_map[sc_reg] * 4; |
539 | writel(val, scr_addr + sil24_scr_map[sc_reg] * 4); | |
da3dbb17 | 540 | return 0; |
edb33667 | 541 | } |
da3dbb17 | 542 | return -EINVAL; |
edb33667 TH |
543 | } |
544 | ||
7f726d12 TH |
545 | static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf) |
546 | { | |
547 | struct sil24_port_priv *pp = ap->private_data; | |
548 | *tf = pp->tf; | |
549 | } | |
550 | ||
23818034 TH |
551 | static void sil24_config_port(struct ata_port *ap) |
552 | { | |
553 | void __iomem *port = ap->ioaddr.cmd_addr; | |
554 | ||
555 | /* configure IRQ WoC */ | |
556 | if (ap->flags & SIL24_FLAG_PCIX_IRQ_WOC) | |
557 | writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_STAT); | |
558 | else | |
559 | writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_CLR); | |
560 | ||
561 | /* zero error counters. */ | |
562 | writel(0x8000, port + PORT_DECODE_ERR_THRESH); | |
563 | writel(0x8000, port + PORT_CRC_ERR_THRESH); | |
564 | writel(0x8000, port + PORT_HSHK_ERR_THRESH); | |
565 | writel(0x0000, port + PORT_DECODE_ERR_CNT); | |
566 | writel(0x0000, port + PORT_CRC_ERR_CNT); | |
567 | writel(0x0000, port + PORT_HSHK_ERR_CNT); | |
568 | ||
569 | /* always use 64bit activation */ | |
570 | writel(PORT_CS_32BIT_ACTV, port + PORT_CTRL_CLR); | |
571 | ||
572 | /* clear port multiplier enable and resume bits */ | |
573 | writel(PORT_CS_PMP_EN | PORT_CS_PMP_RESUME, port + PORT_CTRL_CLR); | |
574 | } | |
575 | ||
3454dc69 TH |
576 | static void sil24_config_pmp(struct ata_port *ap, int attached) |
577 | { | |
578 | void __iomem *port = ap->ioaddr.cmd_addr; | |
579 | ||
580 | if (attached) | |
581 | writel(PORT_CS_PMP_EN, port + PORT_CTRL_STAT); | |
582 | else | |
583 | writel(PORT_CS_PMP_EN, port + PORT_CTRL_CLR); | |
584 | } | |
585 | ||
586 | static void sil24_clear_pmp(struct ata_port *ap) | |
587 | { | |
588 | void __iomem *port = ap->ioaddr.cmd_addr; | |
589 | int i; | |
590 | ||
591 | writel(PORT_CS_PMP_RESUME, port + PORT_CTRL_CLR); | |
592 | ||
593 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) { | |
594 | void __iomem *pmp_base = port + PORT_PMP + i * PORT_PMP_SIZE; | |
595 | ||
596 | writel(0, pmp_base + PORT_PMP_STATUS); | |
597 | writel(0, pmp_base + PORT_PMP_QACTIVE); | |
598 | } | |
599 | } | |
600 | ||
b5bc421c TH |
601 | static int sil24_init_port(struct ata_port *ap) |
602 | { | |
0d5ff566 | 603 | void __iomem *port = ap->ioaddr.cmd_addr; |
23818034 | 604 | struct sil24_port_priv *pp = ap->private_data; |
b5bc421c TH |
605 | u32 tmp; |
606 | ||
3454dc69 TH |
607 | /* clear PMP error status */ |
608 | if (ap->nr_pmp_links) | |
609 | sil24_clear_pmp(ap); | |
610 | ||
b5bc421c TH |
611 | writel(PORT_CS_INIT, port + PORT_CTRL_STAT); |
612 | ata_wait_register(port + PORT_CTRL_STAT, | |
613 | PORT_CS_INIT, PORT_CS_INIT, 10, 100); | |
614 | tmp = ata_wait_register(port + PORT_CTRL_STAT, | |
615 | PORT_CS_RDY, 0, 10, 100); | |
616 | ||
23818034 TH |
617 | if ((tmp & (PORT_CS_INIT | PORT_CS_RDY)) != PORT_CS_RDY) { |
618 | pp->do_port_rst = 1; | |
619 | ap->link.eh_context.i.action |= ATA_EH_HARDRESET; | |
b5bc421c | 620 | return -EIO; |
23818034 TH |
621 | } |
622 | ||
b5bc421c TH |
623 | return 0; |
624 | } | |
625 | ||
37b99cba TH |
626 | static int sil24_exec_polled_cmd(struct ata_port *ap, int pmp, |
627 | const struct ata_taskfile *tf, | |
628 | int is_cmd, u32 ctrl, | |
629 | unsigned long timeout_msec) | |
edb33667 | 630 | { |
0d5ff566 | 631 | void __iomem *port = ap->ioaddr.cmd_addr; |
ca45160d | 632 | struct sil24_port_priv *pp = ap->private_data; |
69ad185f | 633 | struct sil24_prb *prb = &pp->cmd_block[0].ata.prb; |
ca45160d | 634 | dma_addr_t paddr = pp->cmd_block_dma; |
37b99cba TH |
635 | u32 irq_enabled, irq_mask, irq_stat; |
636 | int rc; | |
637 | ||
638 | prb->ctrl = cpu_to_le16(ctrl); | |
639 | ata_tf_to_fis(tf, pmp, is_cmd, prb->fis); | |
640 | ||
641 | /* temporarily plug completion and error interrupts */ | |
642 | irq_enabled = readl(port + PORT_IRQ_ENABLE_SET); | |
643 | writel(PORT_IRQ_COMPLETE | PORT_IRQ_ERROR, port + PORT_IRQ_ENABLE_CLR); | |
644 | ||
645 | writel((u32)paddr, port + PORT_CMD_ACTIVATE); | |
646 | writel((u64)paddr >> 32, port + PORT_CMD_ACTIVATE + 4); | |
647 | ||
648 | irq_mask = (PORT_IRQ_COMPLETE | PORT_IRQ_ERROR) << PORT_IRQ_RAW_SHIFT; | |
649 | irq_stat = ata_wait_register(port + PORT_IRQ_STAT, irq_mask, 0x0, | |
650 | 10, timeout_msec); | |
651 | ||
652 | writel(irq_mask, port + PORT_IRQ_STAT); /* clear IRQs */ | |
653 | irq_stat >>= PORT_IRQ_RAW_SHIFT; | |
654 | ||
655 | if (irq_stat & PORT_IRQ_COMPLETE) | |
656 | rc = 0; | |
657 | else { | |
658 | /* force port into known state */ | |
659 | sil24_init_port(ap); | |
660 | ||
661 | if (irq_stat & PORT_IRQ_ERROR) | |
662 | rc = -EIO; | |
663 | else | |
664 | rc = -EBUSY; | |
665 | } | |
666 | ||
667 | /* restore IRQ enabled */ | |
668 | writel(irq_enabled, port + PORT_IRQ_ENABLE_SET); | |
669 | ||
670 | return rc; | |
671 | } | |
672 | ||
cc0680a5 | 673 | static int sil24_do_softreset(struct ata_link *link, unsigned int *class, |
975530e8 | 674 | int pmp, unsigned long deadline) |
37b99cba | 675 | { |
cc0680a5 | 676 | struct ata_port *ap = link->ap; |
37b99cba | 677 | unsigned long timeout_msec = 0; |
e59f0dad | 678 | struct ata_taskfile tf; |
643be977 | 679 | const char *reason; |
37b99cba | 680 | int rc; |
ca45160d | 681 | |
07b73470 TH |
682 | DPRINTK("ENTER\n"); |
683 | ||
cc0680a5 | 684 | if (ata_link_offline(link)) { |
10d996ad TH |
685 | DPRINTK("PHY reports no device\n"); |
686 | *class = ATA_DEV_NONE; | |
687 | goto out; | |
688 | } | |
689 | ||
2555d6c2 TH |
690 | /* put the port into known state */ |
691 | if (sil24_init_port(ap)) { | |
5796d1c4 | 692 | reason = "port not ready"; |
2555d6c2 TH |
693 | goto err; |
694 | } | |
695 | ||
0eaa6058 | 696 | /* do SRST */ |
37b99cba TH |
697 | if (time_after(deadline, jiffies)) |
698 | timeout_msec = jiffies_to_msecs(deadline - jiffies); | |
ca45160d | 699 | |
cc0680a5 | 700 | ata_tf_init(link->device, &tf); /* doesn't really matter */ |
975530e8 TH |
701 | rc = sil24_exec_polled_cmd(ap, pmp, &tf, 0, PRB_CTRL_SRST, |
702 | timeout_msec); | |
37b99cba TH |
703 | if (rc == -EBUSY) { |
704 | reason = "timeout"; | |
705 | goto err; | |
706 | } else if (rc) { | |
707 | reason = "SRST command error"; | |
643be977 | 708 | goto err; |
07b73470 | 709 | } |
10d996ad | 710 | |
e59f0dad TH |
711 | sil24_read_tf(ap, 0, &tf); |
712 | *class = ata_dev_classify(&tf); | |
10d996ad | 713 | |
07b73470 TH |
714 | if (*class == ATA_DEV_UNKNOWN) |
715 | *class = ATA_DEV_NONE; | |
ca45160d | 716 | |
10d996ad | 717 | out: |
07b73470 | 718 | DPRINTK("EXIT, class=%u\n", *class); |
ca45160d | 719 | return 0; |
643be977 TH |
720 | |
721 | err: | |
cc0680a5 | 722 | ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason); |
643be977 | 723 | return -EIO; |
ca45160d TH |
724 | } |
725 | ||
cc0680a5 | 726 | static int sil24_softreset(struct ata_link *link, unsigned int *class, |
975530e8 TH |
727 | unsigned long deadline) |
728 | { | |
3454dc69 | 729 | return sil24_do_softreset(link, class, SATA_PMP_CTRL_PORT, deadline); |
975530e8 TH |
730 | } |
731 | ||
cc0680a5 | 732 | static int sil24_hardreset(struct ata_link *link, unsigned int *class, |
d4b2bab4 | 733 | unsigned long deadline) |
489ff4c7 | 734 | { |
cc0680a5 | 735 | struct ata_port *ap = link->ap; |
0d5ff566 | 736 | void __iomem *port = ap->ioaddr.cmd_addr; |
23818034 TH |
737 | struct sil24_port_priv *pp = ap->private_data; |
738 | int did_port_rst = 0; | |
ecc2e2b9 | 739 | const char *reason; |
e8e008e7 | 740 | int tout_msec, rc; |
ecc2e2b9 TH |
741 | u32 tmp; |
742 | ||
23818034 TH |
743 | retry: |
744 | /* Sometimes, DEV_RST is not enough to recover the controller. | |
745 | * This happens often after PM DMA CS errata. | |
746 | */ | |
747 | if (pp->do_port_rst) { | |
748 | ata_port_printk(ap, KERN_WARNING, "controller in dubious " | |
749 | "state, performing PORT_RST\n"); | |
750 | ||
751 | writel(PORT_CS_PORT_RST, port + PORT_CTRL_STAT); | |
752 | msleep(10); | |
753 | writel(PORT_CS_PORT_RST, port + PORT_CTRL_CLR); | |
754 | ata_wait_register(port + PORT_CTRL_STAT, PORT_CS_RDY, 0, | |
755 | 10, 5000); | |
756 | ||
757 | /* restore port configuration */ | |
758 | sil24_config_port(ap); | |
759 | sil24_config_pmp(ap, ap->nr_pmp_links); | |
760 | ||
761 | pp->do_port_rst = 0; | |
762 | did_port_rst = 1; | |
763 | } | |
764 | ||
ecc2e2b9 | 765 | /* sil24 does the right thing(tm) without any protection */ |
cc0680a5 | 766 | sata_set_spd(link); |
ecc2e2b9 TH |
767 | |
768 | tout_msec = 100; | |
cc0680a5 | 769 | if (ata_link_online(link)) |
ecc2e2b9 TH |
770 | tout_msec = 5000; |
771 | ||
772 | writel(PORT_CS_DEV_RST, port + PORT_CTRL_STAT); | |
773 | tmp = ata_wait_register(port + PORT_CTRL_STAT, | |
5796d1c4 JG |
774 | PORT_CS_DEV_RST, PORT_CS_DEV_RST, 10, |
775 | tout_msec); | |
ecc2e2b9 | 776 | |
e8e008e7 TH |
777 | /* SStatus oscillates between zero and valid status after |
778 | * DEV_RST, debounce it. | |
ecc2e2b9 | 779 | */ |
cc0680a5 | 780 | rc = sata_link_debounce(link, sata_deb_timing_long, deadline); |
e8e008e7 TH |
781 | if (rc) { |
782 | reason = "PHY debouncing failed"; | |
783 | goto err; | |
784 | } | |
ecc2e2b9 TH |
785 | |
786 | if (tmp & PORT_CS_DEV_RST) { | |
cc0680a5 | 787 | if (ata_link_offline(link)) |
ecc2e2b9 TH |
788 | return 0; |
789 | reason = "link not ready"; | |
790 | goto err; | |
791 | } | |
792 | ||
e8e008e7 TH |
793 | /* Sil24 doesn't store signature FIS after hardreset, so we |
794 | * can't wait for BSY to clear. Some devices take a long time | |
795 | * to get ready and those devices will choke if we don't wait | |
796 | * for BSY clearance here. Tell libata to perform follow-up | |
797 | * softreset. | |
ecc2e2b9 | 798 | */ |
e8e008e7 | 799 | return -EAGAIN; |
ecc2e2b9 TH |
800 | |
801 | err: | |
23818034 TH |
802 | if (!did_port_rst) { |
803 | pp->do_port_rst = 1; | |
804 | goto retry; | |
805 | } | |
806 | ||
cc0680a5 | 807 | ata_link_printk(link, KERN_ERR, "hardreset failed (%s)\n", reason); |
ecc2e2b9 | 808 | return -EIO; |
489ff4c7 TH |
809 | } |
810 | ||
edb33667 | 811 | static inline void sil24_fill_sg(struct ata_queued_cmd *qc, |
69ad185f | 812 | struct sil24_sge *sge) |
edb33667 | 813 | { |
972c26bd | 814 | struct scatterlist *sg; |
3be6cbd7 | 815 | struct sil24_sge *last_sge = NULL; |
ff2aeb1e | 816 | unsigned int si; |
edb33667 | 817 | |
ff2aeb1e | 818 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
edb33667 TH |
819 | sge->addr = cpu_to_le64(sg_dma_address(sg)); |
820 | sge->cnt = cpu_to_le32(sg_dma_len(sg)); | |
3be6cbd7 JG |
821 | sge->flags = 0; |
822 | ||
823 | last_sge = sge; | |
972c26bd | 824 | sge++; |
edb33667 | 825 | } |
3be6cbd7 | 826 | |
ff2aeb1e | 827 | last_sge->flags = cpu_to_le32(SGE_TRM); |
edb33667 TH |
828 | } |
829 | ||
3454dc69 TH |
830 | static int sil24_qc_defer(struct ata_queued_cmd *qc) |
831 | { | |
832 | struct ata_link *link = qc->dev->link; | |
833 | struct ata_port *ap = link->ap; | |
834 | u8 prot = qc->tf.protocol; | |
13cc546b GG |
835 | |
836 | /* | |
837 | * There is a bug in the chip: | |
838 | * Port LRAM Causes the PRB/SGT Data to be Corrupted | |
839 | * If the host issues a read request for LRAM and SActive registers | |
840 | * while active commands are available in the port, PRB/SGT data in | |
841 | * the LRAM can become corrupted. This issue applies only when | |
842 | * reading from, but not writing to, the LRAM. | |
843 | * | |
844 | * Therefore, reading LRAM when there is no particular error [and | |
845 | * other commands may be outstanding] is prohibited. | |
846 | * | |
847 | * To avoid this bug there are two situations where a command must run | |
848 | * exclusive of any other commands on the port: | |
849 | * | |
850 | * - ATAPI commands which check the sense data | |
851 | * - Passthrough ATA commands which always have ATA_QCFLAG_RESULT_TF | |
852 | * set. | |
853 | * | |
854 | */ | |
405e66b3 | 855 | int is_excl = (ata_is_atapi(prot) || |
13cc546b GG |
856 | (qc->flags & ATA_QCFLAG_RESULT_TF)); |
857 | ||
3454dc69 TH |
858 | if (unlikely(ap->excl_link)) { |
859 | if (link == ap->excl_link) { | |
860 | if (ap->nr_active_links) | |
861 | return ATA_DEFER_PORT; | |
862 | qc->flags |= ATA_QCFLAG_CLEAR_EXCL; | |
863 | } else | |
864 | return ATA_DEFER_PORT; | |
13cc546b | 865 | } else if (unlikely(is_excl)) { |
3454dc69 TH |
866 | ap->excl_link = link; |
867 | if (ap->nr_active_links) | |
868 | return ATA_DEFER_PORT; | |
869 | qc->flags |= ATA_QCFLAG_CLEAR_EXCL; | |
870 | } | |
871 | ||
872 | return ata_std_qc_defer(qc); | |
873 | } | |
874 | ||
edb33667 TH |
875 | static void sil24_qc_prep(struct ata_queued_cmd *qc) |
876 | { | |
877 | struct ata_port *ap = qc->ap; | |
878 | struct sil24_port_priv *pp = ap->private_data; | |
aee10a03 | 879 | union sil24_cmd_block *cb; |
69ad185f TH |
880 | struct sil24_prb *prb; |
881 | struct sil24_sge *sge; | |
bad28a37 | 882 | u16 ctrl = 0; |
edb33667 | 883 | |
aee10a03 TH |
884 | cb = &pp->cmd_block[sil24_tag(qc->tag)]; |
885 | ||
405e66b3 | 886 | if (!ata_is_atapi(qc->tf.protocol)) { |
69ad185f TH |
887 | prb = &cb->ata.prb; |
888 | sge = cb->ata.sge; | |
405e66b3 | 889 | } else { |
69ad185f TH |
890 | prb = &cb->atapi.prb; |
891 | sge = cb->atapi.sge; | |
892 | memset(cb->atapi.cdb, 0, 32); | |
6e7846e9 | 893 | memcpy(cb->atapi.cdb, qc->cdb, qc->dev->cdb_len); |
69ad185f | 894 | |
405e66b3 | 895 | if (ata_is_data(qc->tf.protocol)) { |
69ad185f | 896 | if (qc->tf.flags & ATA_TFLAG_WRITE) |
bad28a37 | 897 | ctrl = PRB_CTRL_PACKET_WRITE; |
69ad185f | 898 | else |
bad28a37 TH |
899 | ctrl = PRB_CTRL_PACKET_READ; |
900 | } | |
edb33667 TH |
901 | } |
902 | ||
bad28a37 | 903 | prb->ctrl = cpu_to_le16(ctrl); |
3454dc69 | 904 | ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, prb->fis); |
edb33667 TH |
905 | |
906 | if (qc->flags & ATA_QCFLAG_DMAMAP) | |
69ad185f | 907 | sil24_fill_sg(qc, sge); |
edb33667 TH |
908 | } |
909 | ||
9a3d9eb0 | 910 | static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc) |
edb33667 TH |
911 | { |
912 | struct ata_port *ap = qc->ap; | |
913 | struct sil24_port_priv *pp = ap->private_data; | |
0d5ff566 | 914 | void __iomem *port = ap->ioaddr.cmd_addr; |
aee10a03 TH |
915 | unsigned int tag = sil24_tag(qc->tag); |
916 | dma_addr_t paddr; | |
917 | void __iomem *activate; | |
edb33667 | 918 | |
aee10a03 TH |
919 | paddr = pp->cmd_block_dma + tag * sizeof(*pp->cmd_block); |
920 | activate = port + PORT_CMD_ACTIVATE + tag * 8; | |
921 | ||
922 | writel((u32)paddr, activate); | |
923 | writel((u64)paddr >> 32, activate + 4); | |
26ec634c | 924 | |
edb33667 TH |
925 | return 0; |
926 | } | |
927 | ||
928 | static void sil24_irq_clear(struct ata_port *ap) | |
929 | { | |
930 | /* unused */ | |
931 | } | |
932 | ||
3454dc69 TH |
933 | static void sil24_pmp_attach(struct ata_port *ap) |
934 | { | |
935 | sil24_config_pmp(ap, 1); | |
936 | sil24_init_port(ap); | |
937 | } | |
938 | ||
939 | static void sil24_pmp_detach(struct ata_port *ap) | |
940 | { | |
941 | sil24_init_port(ap); | |
942 | sil24_config_pmp(ap, 0); | |
943 | } | |
944 | ||
3454dc69 TH |
945 | static int sil24_pmp_softreset(struct ata_link *link, unsigned int *class, |
946 | unsigned long deadline) | |
947 | { | |
948 | return sil24_do_softreset(link, class, link->pmp, deadline); | |
949 | } | |
950 | ||
951 | static int sil24_pmp_hardreset(struct ata_link *link, unsigned int *class, | |
952 | unsigned long deadline) | |
953 | { | |
954 | int rc; | |
955 | ||
956 | rc = sil24_init_port(link->ap); | |
957 | if (rc) { | |
958 | ata_link_printk(link, KERN_ERR, | |
959 | "hardreset failed (port not ready)\n"); | |
960 | return rc; | |
961 | } | |
962 | ||
963 | return sata_pmp_std_hardreset(link, class, deadline); | |
964 | } | |
965 | ||
88ce7550 | 966 | static void sil24_freeze(struct ata_port *ap) |
7d1ce682 | 967 | { |
0d5ff566 | 968 | void __iomem *port = ap->ioaddr.cmd_addr; |
7d1ce682 | 969 | |
88ce7550 TH |
970 | /* Port-wide IRQ mask in HOST_CTRL doesn't really work, clear |
971 | * PORT_IRQ_ENABLE instead. | |
972 | */ | |
973 | writel(0xffff, port + PORT_IRQ_ENABLE_CLR); | |
7d1ce682 TH |
974 | } |
975 | ||
88ce7550 | 976 | static void sil24_thaw(struct ata_port *ap) |
edb33667 | 977 | { |
0d5ff566 | 978 | void __iomem *port = ap->ioaddr.cmd_addr; |
edb33667 TH |
979 | u32 tmp; |
980 | ||
88ce7550 TH |
981 | /* clear IRQ */ |
982 | tmp = readl(port + PORT_IRQ_STAT); | |
983 | writel(tmp, port + PORT_IRQ_STAT); | |
edb33667 | 984 | |
88ce7550 TH |
985 | /* turn IRQ back on */ |
986 | writel(DEF_PORT_IRQ, port + PORT_IRQ_ENABLE_SET); | |
edb33667 TH |
987 | } |
988 | ||
88ce7550 | 989 | static void sil24_error_intr(struct ata_port *ap) |
8746618d | 990 | { |
0d5ff566 | 991 | void __iomem *port = ap->ioaddr.cmd_addr; |
e59f0dad | 992 | struct sil24_port_priv *pp = ap->private_data; |
3454dc69 TH |
993 | struct ata_queued_cmd *qc = NULL; |
994 | struct ata_link *link; | |
995 | struct ata_eh_info *ehi; | |
996 | int abort = 0, freeze = 0; | |
88ce7550 | 997 | u32 irq_stat; |
8746618d | 998 | |
88ce7550 | 999 | /* on error, we need to clear IRQ explicitly */ |
8746618d | 1000 | irq_stat = readl(port + PORT_IRQ_STAT); |
88ce7550 | 1001 | writel(irq_stat, port + PORT_IRQ_STAT); |
ad6e90f6 | 1002 | |
88ce7550 | 1003 | /* first, analyze and record host port events */ |
3454dc69 TH |
1004 | link = &ap->link; |
1005 | ehi = &link->eh_info; | |
88ce7550 | 1006 | ata_ehi_clear_desc(ehi); |
ad6e90f6 | 1007 | |
88ce7550 | 1008 | ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat); |
8746618d | 1009 | |
854c73a2 | 1010 | if (irq_stat & PORT_IRQ_SDB_NOTIFY) { |
854c73a2 | 1011 | ata_ehi_push_desc(ehi, "SDB notify"); |
7d77b247 | 1012 | sata_async_notification(ap); |
854c73a2 TH |
1013 | } |
1014 | ||
0542925b TH |
1015 | if (irq_stat & (PORT_IRQ_PHYRDY_CHG | PORT_IRQ_DEV_XCHG)) { |
1016 | ata_ehi_hotplugged(ehi); | |
b64bbc39 TH |
1017 | ata_ehi_push_desc(ehi, "%s", |
1018 | irq_stat & PORT_IRQ_PHYRDY_CHG ? | |
1019 | "PHY RDY changed" : "device exchanged"); | |
88ce7550 | 1020 | freeze = 1; |
6a575fa9 TH |
1021 | } |
1022 | ||
88ce7550 TH |
1023 | if (irq_stat & PORT_IRQ_UNK_FIS) { |
1024 | ehi->err_mask |= AC_ERR_HSM; | |
1025 | ehi->action |= ATA_EH_SOFTRESET; | |
b64bbc39 | 1026 | ata_ehi_push_desc(ehi, "unknown FIS"); |
88ce7550 TH |
1027 | freeze = 1; |
1028 | } | |
1029 | ||
1030 | /* deal with command error */ | |
1031 | if (irq_stat & PORT_IRQ_ERROR) { | |
1032 | struct sil24_cerr_info *ci = NULL; | |
1033 | unsigned int err_mask = 0, action = 0; | |
3454dc69 TH |
1034 | u32 context, cerr; |
1035 | int pmp; | |
1036 | ||
1037 | abort = 1; | |
1038 | ||
1039 | /* DMA Context Switch Failure in Port Multiplier Mode | |
1040 | * errata. If we have active commands to 3 or more | |
1041 | * devices, any error condition on active devices can | |
1042 | * corrupt DMA context switching. | |
1043 | */ | |
1044 | if (ap->nr_active_links >= 3) { | |
1045 | ehi->err_mask |= AC_ERR_OTHER; | |
1046 | ehi->action |= ATA_EH_HARDRESET; | |
1047 | ata_ehi_push_desc(ehi, "PMP DMA CS errata"); | |
23818034 | 1048 | pp->do_port_rst = 1; |
3454dc69 TH |
1049 | freeze = 1; |
1050 | } | |
1051 | ||
1052 | /* find out the offending link and qc */ | |
1053 | if (ap->nr_pmp_links) { | |
1054 | context = readl(port + PORT_CONTEXT); | |
1055 | pmp = (context >> 5) & 0xf; | |
1056 | ||
1057 | if (pmp < ap->nr_pmp_links) { | |
1058 | link = &ap->pmp_link[pmp]; | |
1059 | ehi = &link->eh_info; | |
1060 | qc = ata_qc_from_tag(ap, link->active_tag); | |
1061 | ||
1062 | ata_ehi_clear_desc(ehi); | |
1063 | ata_ehi_push_desc(ehi, "irq_stat 0x%08x", | |
1064 | irq_stat); | |
1065 | } else { | |
1066 | err_mask |= AC_ERR_HSM; | |
1067 | action |= ATA_EH_HARDRESET; | |
1068 | freeze = 1; | |
1069 | } | |
1070 | } else | |
1071 | qc = ata_qc_from_tag(ap, link->active_tag); | |
88ce7550 TH |
1072 | |
1073 | /* analyze CMD_ERR */ | |
1074 | cerr = readl(port + PORT_CMD_ERR); | |
1075 | if (cerr < ARRAY_SIZE(sil24_cerr_db)) | |
1076 | ci = &sil24_cerr_db[cerr]; | |
1077 | ||
1078 | if (ci && ci->desc) { | |
1079 | err_mask |= ci->err_mask; | |
1080 | action |= ci->action; | |
c2e14f11 TH |
1081 | if (action & ATA_EH_RESET_MASK) |
1082 | freeze = 1; | |
b64bbc39 | 1083 | ata_ehi_push_desc(ehi, "%s", ci->desc); |
88ce7550 TH |
1084 | } else { |
1085 | err_mask |= AC_ERR_OTHER; | |
1086 | action |= ATA_EH_SOFTRESET; | |
c2e14f11 | 1087 | freeze = 1; |
b64bbc39 | 1088 | ata_ehi_push_desc(ehi, "unknown command error %d", |
88ce7550 TH |
1089 | cerr); |
1090 | } | |
1091 | ||
1092 | /* record error info */ | |
88ce7550 | 1093 | if (qc) { |
e59f0dad | 1094 | sil24_read_tf(ap, qc->tag, &pp->tf); |
88ce7550 TH |
1095 | qc->err_mask |= err_mask; |
1096 | } else | |
1097 | ehi->err_mask |= err_mask; | |
1098 | ||
1099 | ehi->action |= action; | |
3454dc69 TH |
1100 | |
1101 | /* if PMP, resume */ | |
1102 | if (ap->nr_pmp_links) | |
1103 | writel(PORT_CS_PMP_RESUME, port + PORT_CTRL_STAT); | |
a22e2eb0 | 1104 | } |
88ce7550 TH |
1105 | |
1106 | /* freeze or abort */ | |
1107 | if (freeze) | |
1108 | ata_port_freeze(ap); | |
3454dc69 TH |
1109 | else if (abort) { |
1110 | if (qc) | |
1111 | ata_link_abort(qc->dev->link); | |
1112 | else | |
1113 | ata_port_abort(ap); | |
1114 | } | |
8746618d TH |
1115 | } |
1116 | ||
aee10a03 TH |
1117 | static void sil24_finish_qc(struct ata_queued_cmd *qc) |
1118 | { | |
e59f0dad TH |
1119 | struct ata_port *ap = qc->ap; |
1120 | struct sil24_port_priv *pp = ap->private_data; | |
1121 | ||
aee10a03 | 1122 | if (qc->flags & ATA_QCFLAG_RESULT_TF) |
e59f0dad | 1123 | sil24_read_tf(ap, qc->tag, &pp->tf); |
aee10a03 TH |
1124 | } |
1125 | ||
edb33667 TH |
1126 | static inline void sil24_host_intr(struct ata_port *ap) |
1127 | { | |
0d5ff566 | 1128 | void __iomem *port = ap->ioaddr.cmd_addr; |
aee10a03 TH |
1129 | u32 slot_stat, qc_active; |
1130 | int rc; | |
edb33667 | 1131 | |
228f47b9 TH |
1132 | /* If PCIX_IRQ_WOC, there's an inherent race window between |
1133 | * clearing IRQ pending status and reading PORT_SLOT_STAT | |
1134 | * which may cause spurious interrupts afterwards. This is | |
1135 | * unavoidable and much better than losing interrupts which | |
1136 | * happens if IRQ pending is cleared after reading | |
1137 | * PORT_SLOT_STAT. | |
1138 | */ | |
1139 | if (ap->flags & SIL24_FLAG_PCIX_IRQ_WOC) | |
1140 | writel(PORT_IRQ_COMPLETE, port + PORT_IRQ_STAT); | |
1141 | ||
edb33667 | 1142 | slot_stat = readl(port + PORT_SLOT_STAT); |
37024e8e | 1143 | |
88ce7550 TH |
1144 | if (unlikely(slot_stat & HOST_SSTAT_ATTN)) { |
1145 | sil24_error_intr(ap); | |
1146 | return; | |
1147 | } | |
1148 | ||
aee10a03 TH |
1149 | qc_active = slot_stat & ~HOST_SSTAT_ATTN; |
1150 | rc = ata_qc_complete_multiple(ap, qc_active, sil24_finish_qc); | |
1151 | if (rc > 0) | |
1152 | return; | |
1153 | if (rc < 0) { | |
9af5c9c9 | 1154 | struct ata_eh_info *ehi = &ap->link.eh_info; |
aee10a03 TH |
1155 | ehi->err_mask |= AC_ERR_HSM; |
1156 | ehi->action |= ATA_EH_SOFTRESET; | |
1157 | ata_port_freeze(ap); | |
88ce7550 TH |
1158 | return; |
1159 | } | |
1160 | ||
228f47b9 TH |
1161 | /* spurious interrupts are expected if PCIX_IRQ_WOC */ |
1162 | if (!(ap->flags & SIL24_FLAG_PCIX_IRQ_WOC) && ata_ratelimit()) | |
88ce7550 | 1163 | ata_port_printk(ap, KERN_INFO, "spurious interrupt " |
aee10a03 | 1164 | "(slot_stat 0x%x active_tag %d sactive 0x%x)\n", |
9af5c9c9 | 1165 | slot_stat, ap->link.active_tag, ap->link.sactive); |
edb33667 TH |
1166 | } |
1167 | ||
7d12e780 | 1168 | static irqreturn_t sil24_interrupt(int irq, void *dev_instance) |
edb33667 | 1169 | { |
cca3974e | 1170 | struct ata_host *host = dev_instance; |
0d5ff566 | 1171 | void __iomem *host_base = host->iomap[SIL24_HOST_BAR]; |
edb33667 TH |
1172 | unsigned handled = 0; |
1173 | u32 status; | |
1174 | int i; | |
1175 | ||
0d5ff566 | 1176 | status = readl(host_base + HOST_IRQ_STAT); |
edb33667 | 1177 | |
06460aea TH |
1178 | if (status == 0xffffffff) { |
1179 | printk(KERN_ERR DRV_NAME ": IRQ status == 0xffffffff, " | |
1180 | "PCI fault or device removal?\n"); | |
1181 | goto out; | |
1182 | } | |
1183 | ||
edb33667 TH |
1184 | if (!(status & IRQ_STAT_4PORTS)) |
1185 | goto out; | |
1186 | ||
cca3974e | 1187 | spin_lock(&host->lock); |
edb33667 | 1188 | |
cca3974e | 1189 | for (i = 0; i < host->n_ports; i++) |
edb33667 | 1190 | if (status & (1 << i)) { |
cca3974e | 1191 | struct ata_port *ap = host->ports[i]; |
198e0fed | 1192 | if (ap && !(ap->flags & ATA_FLAG_DISABLED)) { |
825cd6dd | 1193 | sil24_host_intr(ap); |
3cc4571c TH |
1194 | handled++; |
1195 | } else | |
1196 | printk(KERN_ERR DRV_NAME | |
1197 | ": interrupt from disabled port %d\n", i); | |
edb33667 TH |
1198 | } |
1199 | ||
cca3974e | 1200 | spin_unlock(&host->lock); |
edb33667 TH |
1201 | out: |
1202 | return IRQ_RETVAL(handled); | |
1203 | } | |
1204 | ||
88ce7550 TH |
1205 | static void sil24_error_handler(struct ata_port *ap) |
1206 | { | |
23818034 TH |
1207 | struct sil24_port_priv *pp = ap->private_data; |
1208 | ||
3454dc69 | 1209 | if (sil24_init_port(ap)) |
88ce7550 | 1210 | ata_eh_freeze_port(ap); |
88ce7550 TH |
1211 | |
1212 | /* perform recovery */ | |
3454dc69 TH |
1213 | sata_pmp_do_eh(ap, ata_std_prereset, sil24_softreset, sil24_hardreset, |
1214 | ata_std_postreset, sata_pmp_std_prereset, | |
1215 | sil24_pmp_softreset, sil24_pmp_hardreset, | |
1216 | sata_pmp_std_postreset); | |
23818034 TH |
1217 | |
1218 | pp->do_port_rst = 0; | |
88ce7550 TH |
1219 | } |
1220 | ||
1221 | static void sil24_post_internal_cmd(struct ata_queued_cmd *qc) | |
1222 | { | |
1223 | struct ata_port *ap = qc->ap; | |
1224 | ||
88ce7550 | 1225 | /* make DMA engine forget about the failed command */ |
3454dc69 TH |
1226 | if ((qc->flags & ATA_QCFLAG_FAILED) && sil24_init_port(ap)) |
1227 | ata_eh_freeze_port(ap); | |
88ce7550 TH |
1228 | } |
1229 | ||
edb33667 TH |
1230 | static int sil24_port_start(struct ata_port *ap) |
1231 | { | |
cca3974e | 1232 | struct device *dev = ap->host->dev; |
edb33667 | 1233 | struct sil24_port_priv *pp; |
69ad185f | 1234 | union sil24_cmd_block *cb; |
aee10a03 | 1235 | size_t cb_size = sizeof(*cb) * SIL24_MAX_CMDS; |
edb33667 TH |
1236 | dma_addr_t cb_dma; |
1237 | ||
24dc5f33 | 1238 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
edb33667 | 1239 | if (!pp) |
24dc5f33 | 1240 | return -ENOMEM; |
edb33667 | 1241 | |
6a575fa9 TH |
1242 | pp->tf.command = ATA_DRDY; |
1243 | ||
24dc5f33 | 1244 | cb = dmam_alloc_coherent(dev, cb_size, &cb_dma, GFP_KERNEL); |
6037d6bb | 1245 | if (!cb) |
24dc5f33 | 1246 | return -ENOMEM; |
edb33667 TH |
1247 | memset(cb, 0, cb_size); |
1248 | ||
edb33667 TH |
1249 | pp->cmd_block = cb; |
1250 | pp->cmd_block_dma = cb_dma; | |
1251 | ||
1252 | ap->private_data = pp; | |
1253 | ||
1254 | return 0; | |
edb33667 TH |
1255 | } |
1256 | ||
4447d351 | 1257 | static void sil24_init_controller(struct ata_host *host) |
2a41a610 | 1258 | { |
4447d351 | 1259 | void __iomem *host_base = host->iomap[SIL24_HOST_BAR]; |
2a41a610 TH |
1260 | u32 tmp; |
1261 | int i; | |
1262 | ||
1263 | /* GPIO off */ | |
1264 | writel(0, host_base + HOST_FLASH_CMD); | |
1265 | ||
1266 | /* clear global reset & mask interrupts during initialization */ | |
1267 | writel(0, host_base + HOST_CTRL); | |
1268 | ||
1269 | /* init ports */ | |
4447d351 | 1270 | for (i = 0; i < host->n_ports; i++) { |
23818034 TH |
1271 | struct ata_port *ap = host->ports[i]; |
1272 | void __iomem *port = ap->ioaddr.cmd_addr; | |
2a41a610 TH |
1273 | |
1274 | /* Initial PHY setting */ | |
1275 | writel(0x20c, port + PORT_PHY_CFG); | |
1276 | ||
1277 | /* Clear port RST */ | |
1278 | tmp = readl(port + PORT_CTRL_STAT); | |
1279 | if (tmp & PORT_CS_PORT_RST) { | |
1280 | writel(PORT_CS_PORT_RST, port + PORT_CTRL_CLR); | |
1281 | tmp = ata_wait_register(port + PORT_CTRL_STAT, | |
1282 | PORT_CS_PORT_RST, | |
1283 | PORT_CS_PORT_RST, 10, 100); | |
1284 | if (tmp & PORT_CS_PORT_RST) | |
4447d351 | 1285 | dev_printk(KERN_ERR, host->dev, |
5796d1c4 | 1286 | "failed to clear port RST\n"); |
2a41a610 TH |
1287 | } |
1288 | ||
23818034 TH |
1289 | /* configure port */ |
1290 | sil24_config_port(ap); | |
2a41a610 TH |
1291 | } |
1292 | ||
1293 | /* Turn on interrupts */ | |
1294 | writel(IRQ_STAT_4PORTS, host_base + HOST_CTRL); | |
1295 | } | |
1296 | ||
edb33667 TH |
1297 | static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
1298 | { | |
93e2618e | 1299 | extern int __MARKER__sil24_cmd_block_is_sized_wrongly; |
5796d1c4 | 1300 | static int printed_version; |
4447d351 TH |
1301 | struct ata_port_info pi = sil24_port_info[ent->driver_data]; |
1302 | const struct ata_port_info *ppi[] = { &pi, NULL }; | |
1303 | void __iomem * const *iomap; | |
1304 | struct ata_host *host; | |
edb33667 | 1305 | int i, rc; |
37024e8e | 1306 | u32 tmp; |
edb33667 | 1307 | |
93e2618e TH |
1308 | /* cause link error if sil24_cmd_block is sized wrongly */ |
1309 | if (sizeof(union sil24_cmd_block) != PAGE_SIZE) | |
1310 | __MARKER__sil24_cmd_block_is_sized_wrongly = 1; | |
1311 | ||
edb33667 | 1312 | if (!printed_version++) |
a9524a76 | 1313 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
edb33667 | 1314 | |
4447d351 | 1315 | /* acquire resources */ |
24dc5f33 | 1316 | rc = pcim_enable_device(pdev); |
edb33667 TH |
1317 | if (rc) |
1318 | return rc; | |
1319 | ||
0d5ff566 TH |
1320 | rc = pcim_iomap_regions(pdev, |
1321 | (1 << SIL24_HOST_BAR) | (1 << SIL24_PORT_BAR), | |
1322 | DRV_NAME); | |
edb33667 | 1323 | if (rc) |
24dc5f33 | 1324 | return rc; |
4447d351 | 1325 | iomap = pcim_iomap_table(pdev); |
edb33667 | 1326 | |
4447d351 TH |
1327 | /* apply workaround for completion IRQ loss on PCI-X errata */ |
1328 | if (pi.flags & SIL24_FLAG_PCIX_IRQ_WOC) { | |
1329 | tmp = readl(iomap[SIL24_HOST_BAR] + HOST_CTRL); | |
1330 | if (tmp & (HOST_CTRL_TRDY | HOST_CTRL_STOP | HOST_CTRL_DEVSEL)) | |
1331 | dev_printk(KERN_INFO, &pdev->dev, | |
1332 | "Applying completion IRQ loss on PCI-X " | |
1333 | "errata fix\n"); | |
1334 | else | |
1335 | pi.flags &= ~SIL24_FLAG_PCIX_IRQ_WOC; | |
1336 | } | |
edb33667 | 1337 | |
4447d351 TH |
1338 | /* allocate and fill host */ |
1339 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, | |
1340 | SIL24_FLAG2NPORTS(ppi[0]->flags)); | |
1341 | if (!host) | |
1342 | return -ENOMEM; | |
1343 | host->iomap = iomap; | |
edb33667 | 1344 | |
4447d351 | 1345 | for (i = 0; i < host->n_ports; i++) { |
cbcdd875 TH |
1346 | struct ata_port *ap = host->ports[i]; |
1347 | size_t offset = ap->port_no * PORT_REGS_SIZE; | |
1348 | void __iomem *port = iomap[SIL24_PORT_BAR] + offset; | |
edb33667 | 1349 | |
4447d351 TH |
1350 | host->ports[i]->ioaddr.cmd_addr = port; |
1351 | host->ports[i]->ioaddr.scr_addr = port + PORT_SCONTROL; | |
edb33667 | 1352 | |
cbcdd875 TH |
1353 | ata_port_pbar_desc(ap, SIL24_HOST_BAR, -1, "host"); |
1354 | ata_port_pbar_desc(ap, SIL24_PORT_BAR, offset, "port"); | |
4447d351 | 1355 | } |
edb33667 | 1356 | |
4447d351 | 1357 | /* configure and activate the device */ |
26ec634c TH |
1358 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { |
1359 | rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
1360 | if (rc) { | |
1361 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
1362 | if (rc) { | |
1363 | dev_printk(KERN_ERR, &pdev->dev, | |
1364 | "64-bit DMA enable failed\n"); | |
24dc5f33 | 1365 | return rc; |
26ec634c TH |
1366 | } |
1367 | } | |
1368 | } else { | |
1369 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
1370 | if (rc) { | |
1371 | dev_printk(KERN_ERR, &pdev->dev, | |
1372 | "32-bit DMA enable failed\n"); | |
24dc5f33 | 1373 | return rc; |
26ec634c TH |
1374 | } |
1375 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
1376 | if (rc) { | |
1377 | dev_printk(KERN_ERR, &pdev->dev, | |
1378 | "32-bit consistent DMA enable failed\n"); | |
24dc5f33 | 1379 | return rc; |
26ec634c | 1380 | } |
edb33667 TH |
1381 | } |
1382 | ||
4447d351 | 1383 | sil24_init_controller(host); |
edb33667 TH |
1384 | |
1385 | pci_set_master(pdev); | |
4447d351 TH |
1386 | return ata_host_activate(host, pdev->irq, sil24_interrupt, IRQF_SHARED, |
1387 | &sil24_sht); | |
edb33667 TH |
1388 | } |
1389 | ||
281d426c | 1390 | #ifdef CONFIG_PM |
d2298dca TH |
1391 | static int sil24_pci_device_resume(struct pci_dev *pdev) |
1392 | { | |
cca3974e | 1393 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
0d5ff566 | 1394 | void __iomem *host_base = host->iomap[SIL24_HOST_BAR]; |
553c4aa6 | 1395 | int rc; |
d2298dca | 1396 | |
553c4aa6 TH |
1397 | rc = ata_pci_device_do_resume(pdev); |
1398 | if (rc) | |
1399 | return rc; | |
d2298dca TH |
1400 | |
1401 | if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) | |
0d5ff566 | 1402 | writel(HOST_CTRL_GLOBAL_RST, host_base + HOST_CTRL); |
d2298dca | 1403 | |
4447d351 | 1404 | sil24_init_controller(host); |
d2298dca | 1405 | |
cca3974e | 1406 | ata_host_resume(host); |
d2298dca TH |
1407 | |
1408 | return 0; | |
1409 | } | |
3454dc69 TH |
1410 | |
1411 | static int sil24_port_resume(struct ata_port *ap) | |
1412 | { | |
1413 | sil24_config_pmp(ap, ap->nr_pmp_links); | |
1414 | return 0; | |
1415 | } | |
281d426c | 1416 | #endif |
d2298dca | 1417 | |
edb33667 TH |
1418 | static int __init sil24_init(void) |
1419 | { | |
b7887196 | 1420 | return pci_register_driver(&sil24_pci_driver); |
edb33667 TH |
1421 | } |
1422 | ||
1423 | static void __exit sil24_exit(void) | |
1424 | { | |
1425 | pci_unregister_driver(&sil24_pci_driver); | |
1426 | } | |
1427 | ||
1428 | MODULE_AUTHOR("Tejun Heo"); | |
1429 | MODULE_DESCRIPTION("Silicon Image 3124/3132 SATA low-level driver"); | |
1430 | MODULE_LICENSE("GPL"); | |
1431 | MODULE_DEVICE_TABLE(pci, sil24_pci_tbl); | |
1432 | ||
1433 | module_init(sil24_init); | |
1434 | module_exit(sil24_exit); |