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104ea078 SB |
1 | /* |
2 | * Buffalo Terastation Pro II/Live Board Setup | |
3 | * | |
4 | * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/platform_device.h> | |
15 | #include <linux/pci.h> | |
16 | #include <linux/irq.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/mtd/physmap.h> | |
19 | #include <linux/mv643xx_eth.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/serial_reg.h> | |
22 | #include <asm/mach-types.h> | |
23 | #include <asm/gpio.h> | |
24 | #include <asm/mach/arch.h> | |
25 | #include <asm/mach/pci.h> | |
26 | #include <mach/orion5x.h> | |
27 | #include "common.h" | |
28 | #include "mpp.h" | |
29 | ||
30 | /***************************************************************************** | |
31 | * Terastation Pro 2/Live Info | |
32 | ****************************************************************************/ | |
33 | ||
34 | /* | |
35 | * Terastation Pro 2 hardware : | |
36 | * - Marvell 88F5281-D0 | |
37 | * - Marvell 88SX6042 SATA controller (PCI) | |
38 | * - Marvell 88E1118 Gigabit Ethernet PHY | |
39 | * - 256KB NOR flash | |
40 | * - 128MB of DDR RAM | |
41 | * - PCIe port (not equipped) | |
42 | */ | |
43 | ||
44 | /* | |
45 | * 256K NOR flash Device bus boot chip select | |
46 | */ | |
47 | ||
48 | #define TSP2_NOR_BOOT_BASE 0xf4000000 | |
49 | #define TSP2_NOR_BOOT_SIZE SZ_256K | |
50 | ||
51 | /***************************************************************************** | |
52 | * 256KB NOR Flash on BOOT Device | |
53 | ****************************************************************************/ | |
54 | ||
55 | static struct physmap_flash_data tsp2_nor_flash_data = { | |
56 | .width = 1, | |
57 | }; | |
58 | ||
59 | static struct resource tsp2_nor_flash_resource = { | |
60 | .flags = IORESOURCE_MEM, | |
61 | .start = TSP2_NOR_BOOT_BASE, | |
62 | .end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1, | |
63 | }; | |
64 | ||
65 | static struct platform_device tsp2_nor_flash = { | |
66 | .name = "physmap-flash", | |
67 | .id = 0, | |
68 | .dev = { | |
69 | .platform_data = &tsp2_nor_flash_data, | |
70 | }, | |
71 | .num_resources = 1, | |
72 | .resource = &tsp2_nor_flash_resource, | |
73 | }; | |
74 | ||
75 | /***************************************************************************** | |
76 | * PCI | |
77 | ****************************************************************************/ | |
78 | #define TSP2_PCI_SLOT0_OFFS 7 | |
79 | #define TSP2_PCI_SLOT0_IRQ_PIN 11 | |
80 | ||
81 | void __init tsp2_pci_preinit(void) | |
82 | { | |
83 | int pin; | |
84 | ||
85 | /* | |
86 | * Configure PCI GPIO IRQ pins | |
87 | */ | |
88 | pin = TSP2_PCI_SLOT0_IRQ_PIN; | |
89 | if (gpio_request(pin, "PCI Int1") == 0) { | |
90 | if (gpio_direction_input(pin) == 0) { | |
91 | set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW); | |
92 | } else { | |
93 | printk(KERN_ERR "tsp2_pci_preinit failed " | |
94 | "to set_irq_type pin %d\n", pin); | |
95 | gpio_free(pin); | |
96 | } | |
97 | } else { | |
98 | printk(KERN_ERR "tsp2_pci_preinit failed to " | |
99 | "gpio_request %d\n", pin); | |
100 | } | |
101 | } | |
102 | ||
103 | static int __init tsp2_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
104 | { | |
105 | int irq; | |
106 | ||
107 | /* | |
108 | * Check for devices with hard-wired IRQs. | |
109 | */ | |
110 | irq = orion5x_pci_map_irq(dev, slot, pin); | |
111 | if (irq != -1) | |
112 | return irq; | |
113 | ||
114 | /* | |
115 | * PCI IRQs are connected via GPIOs. | |
116 | */ | |
117 | if (slot == TSP2_PCI_SLOT0_OFFS) | |
118 | return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN); | |
119 | ||
120 | return -1; | |
121 | } | |
122 | ||
123 | static struct hw_pci tsp2_pci __initdata = { | |
124 | .nr_controllers = 2, | |
125 | .preinit = tsp2_pci_preinit, | |
126 | .swizzle = pci_std_swizzle, | |
127 | .setup = orion5x_pci_sys_setup, | |
128 | .scan = orion5x_pci_sys_scan_bus, | |
129 | .map_irq = tsp2_pci_map_irq, | |
130 | }; | |
131 | ||
132 | static int __init tsp2_pci_init(void) | |
133 | { | |
134 | if (machine_is_terastation_pro2()) | |
135 | pci_common_init(&tsp2_pci); | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
140 | subsys_initcall(tsp2_pci_init); | |
141 | ||
142 | /***************************************************************************** | |
143 | * Ethernet | |
144 | ****************************************************************************/ | |
145 | ||
146 | static struct mv643xx_eth_platform_data tsp2_eth_data = { | |
147 | .phy_addr = 0, | |
148 | }; | |
149 | ||
150 | /***************************************************************************** | |
151 | * RTC 5C372a on I2C bus | |
152 | ****************************************************************************/ | |
153 | ||
154 | #define TSP2_RTC_GPIO 9 | |
155 | ||
156 | static struct i2c_board_info __initdata tsp2_i2c_rtc = { | |
157 | I2C_BOARD_INFO("rs5c372a", 0x32), | |
158 | }; | |
159 | ||
160 | /***************************************************************************** | |
161 | * Terastation Pro II specific power off method via UART1-attached | |
162 | * microcontroller | |
163 | ****************************************************************************/ | |
164 | ||
165 | #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2)) | |
166 | ||
167 | static int tsp2_miconread(unsigned char *buf, int count) | |
168 | { | |
169 | int i; | |
170 | int timeout; | |
171 | ||
172 | for (i = 0; i < count; i++) { | |
173 | timeout = 10; | |
174 | ||
175 | while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) { | |
176 | if (--timeout == 0) | |
177 | break; | |
178 | udelay(1000); | |
179 | } | |
180 | ||
181 | if (timeout == 0) | |
182 | break; | |
183 | buf[i] = readl(UART1_REG(RX)); | |
184 | } | |
185 | ||
186 | /* return read bytes */ | |
187 | return i; | |
188 | } | |
189 | ||
190 | static int tsp2_miconwrite(const unsigned char *buf, int count) | |
191 | { | |
192 | int i = 0; | |
193 | ||
194 | while (count--) { | |
195 | while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE)) | |
196 | barrier(); | |
197 | writel(buf[i++], UART1_REG(TX)); | |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static int tsp2_miconsend(const unsigned char *data, int count) | |
204 | { | |
205 | int i; | |
206 | unsigned char checksum = 0; | |
207 | unsigned char recv_buf[40]; | |
208 | unsigned char send_buf[40]; | |
209 | unsigned char correct_ack[3]; | |
210 | int retry = 2; | |
211 | ||
212 | /* Generate checksum */ | |
213 | for (i = 0; i < count; i++) | |
214 | checksum -= data[i]; | |
215 | ||
216 | do { | |
217 | /* Send data */ | |
218 | tsp2_miconwrite(data, count); | |
219 | ||
220 | /* send checksum */ | |
221 | tsp2_miconwrite(&checksum, 1); | |
222 | ||
223 | if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) { | |
224 | printk(KERN_ERR ">%s: receive failed.\n", __func__); | |
225 | ||
226 | /* send preamble to clear the receive buffer */ | |
227 | memset(&send_buf, 0xff, sizeof(send_buf)); | |
228 | tsp2_miconwrite(send_buf, sizeof(send_buf)); | |
229 | ||
230 | /* make dummy reads */ | |
231 | mdelay(100); | |
232 | tsp2_miconread(recv_buf, sizeof(recv_buf)); | |
233 | } else { | |
234 | /* Generate expected ack */ | |
235 | correct_ack[0] = 0x01; | |
236 | correct_ack[1] = data[1]; | |
237 | correct_ack[2] = 0x00; | |
238 | ||
239 | /* checksum Check */ | |
240 | if ((recv_buf[0] + recv_buf[1] + recv_buf[2] + | |
241 | recv_buf[3]) & 0xFF) { | |
242 | printk(KERN_ERR ">%s: Checksum Error : " | |
243 | "Received data[%02x, %02x, %02x, %02x]" | |
244 | "\n", __func__, recv_buf[0], | |
245 | recv_buf[1], recv_buf[2], recv_buf[3]); | |
246 | } else { | |
247 | /* Check Received Data */ | |
248 | if (correct_ack[0] == recv_buf[0] && | |
249 | correct_ack[1] == recv_buf[1] && | |
250 | correct_ack[2] == recv_buf[2]) { | |
251 | /* Interval for next command */ | |
252 | mdelay(10); | |
253 | ||
254 | /* Receive ACK */ | |
255 | return 0; | |
256 | } | |
257 | } | |
258 | /* Received NAK or illegal Data */ | |
259 | printk(KERN_ERR ">%s: Error : NAK or Illegal Data " | |
260 | "Received\n", __func__); | |
261 | } | |
262 | } while (retry--); | |
263 | ||
264 | /* Interval for next command */ | |
265 | mdelay(10); | |
266 | ||
267 | return -1; | |
268 | } | |
269 | ||
270 | static void tsp2_power_off(void) | |
271 | { | |
272 | const unsigned char watchdogkill[] = {0x01, 0x35, 0x00}; | |
273 | const unsigned char shutdownwait[] = {0x00, 0x0c}; | |
274 | const unsigned char poweroff[] = {0x00, 0x06}; | |
275 | /* 38400 baud divisor */ | |
276 | const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400)); | |
277 | ||
278 | pr_info("%s: triggering power-off...\n", __func__); | |
279 | ||
280 | /* hijack uart1 and reset into sane state (38400,8n1,even parity) */ | |
281 | writel(0x83, UART1_REG(LCR)); | |
282 | writel(divisor & 0xff, UART1_REG(DLL)); | |
283 | writel((divisor >> 8) & 0xff, UART1_REG(DLM)); | |
284 | writel(0x1b, UART1_REG(LCR)); | |
285 | writel(0x00, UART1_REG(IER)); | |
286 | writel(0x07, UART1_REG(FCR)); | |
287 | writel(0x00, UART1_REG(MCR)); | |
288 | ||
289 | /* Send the commands to shutdown the Terastation Pro II */ | |
290 | tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ; | |
291 | tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ; | |
292 | tsp2_miconsend(poweroff, sizeof(poweroff)); | |
293 | } | |
294 | ||
295 | /***************************************************************************** | |
296 | * General Setup | |
297 | ****************************************************************************/ | |
298 | static struct orion5x_mpp_mode tsp2_mpp_modes[] __initdata = { | |
299 | { 0, MPP_PCIE_RST_OUTn }, | |
300 | { 1, MPP_UNUSED }, | |
301 | { 2, MPP_UNUSED }, | |
302 | { 3, MPP_UNUSED }, | |
303 | { 4, MPP_NAND }, /* BOOT NAND Flash REn */ | |
304 | { 5, MPP_NAND }, /* BOOT NAND Flash WEn */ | |
305 | { 6, MPP_NAND }, /* BOOT NAND Flash HREn[0] */ | |
306 | { 7, MPP_NAND }, /* BOOT NAND Flash WEn[0] */ | |
307 | { 8, MPP_GPIO }, /* MICON int */ | |
308 | { 9, MPP_GPIO }, /* RTC int */ | |
309 | { 10, MPP_UNUSED }, | |
310 | { 11, MPP_GPIO }, /* PCI Int A */ | |
311 | { 12, MPP_UNUSED }, | |
312 | { 13, MPP_GPIO }, /* UPS on UART0 enable */ | |
313 | { 14, MPP_GPIO }, /* UPS low battery detection */ | |
314 | { 15, MPP_UNUSED }, | |
315 | { 16, MPP_UART }, /* UART1 RXD */ | |
316 | { 17, MPP_UART }, /* UART1 TXD */ | |
317 | { 18, MPP_UART }, /* UART1 CTSn */ | |
318 | { 19, MPP_UART }, /* UART1 RTSn */ | |
319 | { -1 }, | |
320 | }; | |
321 | ||
322 | static void __init tsp2_init(void) | |
323 | { | |
324 | /* | |
325 | * Setup basic Orion functions. Need to be called early. | |
326 | */ | |
327 | orion5x_init(); | |
328 | ||
329 | orion5x_mpp_conf(tsp2_mpp_modes); | |
330 | ||
331 | /* | |
332 | * Configure peripherals. | |
333 | */ | |
334 | orion5x_setup_dev_boot_win(TSP2_NOR_BOOT_BASE, | |
335 | TSP2_NOR_BOOT_SIZE); | |
336 | platform_device_register(&tsp2_nor_flash); | |
337 | ||
338 | orion5x_ehci0_init(); | |
339 | orion5x_eth_init(&tsp2_eth_data); | |
340 | orion5x_i2c_init(); | |
341 | orion5x_uart0_init(); | |
342 | orion5x_uart1_init(); | |
343 | ||
344 | /* Get RTC IRQ and register the chip */ | |
345 | if (gpio_request(TSP2_RTC_GPIO, "rtc") == 0) { | |
346 | if (gpio_direction_input(TSP2_RTC_GPIO) == 0) | |
347 | tsp2_i2c_rtc.irq = gpio_to_irq(TSP2_RTC_GPIO); | |
348 | else | |
349 | gpio_free(TSP2_RTC_GPIO); | |
350 | } | |
351 | if (tsp2_i2c_rtc.irq == 0) | |
352 | pr_warning("tsp2_init: failed to get RTC IRQ\n"); | |
353 | i2c_register_board_info(0, &tsp2_i2c_rtc, 1); | |
354 | ||
355 | /* register Terastation Pro II specific power-off method */ | |
356 | pm_power_off = tsp2_power_off; | |
357 | } | |
358 | ||
359 | MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live") | |
360 | /* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */ | |
361 | .phys_io = ORION5X_REGS_PHYS_BASE, | |
362 | .io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC, | |
363 | .boot_params = 0x00000100, | |
364 | .init_machine = tsp2_init, | |
365 | .map_io = orion5x_map_io, | |
366 | .init_irq = orion5x_init_irq, | |
367 | .timer = &orion5x_timer, | |
368 | .fixup = tag_fixup_mem32, | |
369 | MACHINE_END |