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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[mirror_ubuntu-artful-kernel.git] / drivers / misc / pch_phub.c
1 /*
2 * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
16 */
17
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/types.h>
21 #include <linux/fs.h>
22 #include <linux/uaccess.h>
23 #include <linux/string.h>
24 #include <linux/pci.h>
25 #include <linux/io.h>
26 #include <linux/delay.h>
27 #include <linux/mutex.h>
28 #include <linux/if_ether.h>
29 #include <linux/ctype.h>
30 #include <linux/dmi.h>
31
32 #define PHUB_STATUS 0x00 /* Status Register offset */
33 #define PHUB_CONTROL 0x04 /* Control Register offset */
34 #define PHUB_TIMEOUT 0x05 /* Time out value for Status Register */
35 #define PCH_PHUB_ROM_WRITE_ENABLE 0x01 /* Enabling for writing ROM */
36 #define PCH_PHUB_ROM_WRITE_DISABLE 0x00 /* Disabling for writing ROM */
37 #define PCH_PHUB_MAC_START_ADDR_EG20T 0x14 /* MAC data area start address
38 offset */
39 #define PCH_PHUB_MAC_START_ADDR_ML7223 0x20C /* MAC data area start address
40 offset */
41 #define PCH_PHUB_ROM_START_ADDR_EG20T 0x80 /* ROM data area start address offset
42 (Intel EG20T PCH)*/
43 #define PCH_PHUB_ROM_START_ADDR_ML7213 0x400 /* ROM data area start address
44 offset(LAPIS Semicon ML7213)
45 */
46 #define PCH_PHUB_ROM_START_ADDR_ML7223 0x400 /* ROM data area start address
47 offset(LAPIS Semicon ML7223)
48 */
49
50 /* MAX number of INT_REDUCE_CONTROL registers */
51 #define MAX_NUM_INT_REDUCE_CONTROL_REG 128
52 #define PCI_DEVICE_ID_PCH1_PHUB 0x8801
53 #define PCH_MINOR_NOS 1
54 #define CLKCFG_CAN_50MHZ 0x12000000
55 #define CLKCFG_CANCLK_MASK 0xFF000000
56 #define CLKCFG_UART_MASK 0xFFFFFF
57
58 /* CM-iTC */
59 #define CLKCFG_UART_48MHZ (1 << 16)
60 #define CLKCFG_BAUDDIV (2 << 20)
61 #define CLKCFG_PLL2VCO (8 << 9)
62 #define CLKCFG_UARTCLKSEL (1 << 18)
63
64 /* Macros for ML7213 */
65 #define PCI_VENDOR_ID_ROHM 0x10db
66 #define PCI_DEVICE_ID_ROHM_ML7213_PHUB 0x801A
67
68 /* Macros for ML7223 */
69 #define PCI_DEVICE_ID_ROHM_ML7223_mPHUB 0x8012 /* for Bus-m */
70 #define PCI_DEVICE_ID_ROHM_ML7223_nPHUB 0x8002 /* for Bus-n */
71
72 /* Macros for ML7831 */
73 #define PCI_DEVICE_ID_ROHM_ML7831_PHUB 0x8801
74
75 /* SROM ACCESS Macro */
76 #define PCH_WORD_ADDR_MASK (~((1 << 2) - 1))
77
78 /* Registers address offset */
79 #define PCH_PHUB_ID_REG 0x0000
80 #define PCH_PHUB_QUEUE_PRI_VAL_REG 0x0004
81 #define PCH_PHUB_RC_QUEUE_MAXSIZE_REG 0x0008
82 #define PCH_PHUB_BRI_QUEUE_MAXSIZE_REG 0x000C
83 #define PCH_PHUB_COMP_RESP_TIMEOUT_REG 0x0010
84 #define PCH_PHUB_BUS_SLAVE_CONTROL_REG 0x0014
85 #define PCH_PHUB_DEADLOCK_AVOID_TYPE_REG 0x0018
86 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG0 0x0020
87 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG1 0x0024
88 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG2 0x0028
89 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG3 0x002C
90 #define PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE 0x0040
91 #define CLKCFG_REG_OFFSET 0x500
92 #define FUNCSEL_REG_OFFSET 0x508
93
94 #define PCH_PHUB_OROM_SIZE 15360
95
96 /**
97 * struct pch_phub_reg - PHUB register structure
98 * @phub_id_reg: PHUB_ID register val
99 * @q_pri_val_reg: QUEUE_PRI_VAL register val
100 * @rc_q_maxsize_reg: RC_QUEUE_MAXSIZE register val
101 * @bri_q_maxsize_reg: BRI_QUEUE_MAXSIZE register val
102 * @comp_resp_timeout_reg: COMP_RESP_TIMEOUT register val
103 * @bus_slave_control_reg: BUS_SLAVE_CONTROL_REG register val
104 * @deadlock_avoid_type_reg: DEADLOCK_AVOID_TYPE register val
105 * @intpin_reg_wpermit_reg0: INTPIN_REG_WPERMIT register 0 val
106 * @intpin_reg_wpermit_reg1: INTPIN_REG_WPERMIT register 1 val
107 * @intpin_reg_wpermit_reg2: INTPIN_REG_WPERMIT register 2 val
108 * @intpin_reg_wpermit_reg3: INTPIN_REG_WPERMIT register 3 val
109 * @int_reduce_control_reg: INT_REDUCE_CONTROL registers val
110 * @clkcfg_reg: CLK CFG register val
111 * @funcsel_reg: Function select register value
112 * @pch_phub_base_address: Register base address
113 * @pch_phub_extrom_base_address: external rom base address
114 * @pch_mac_start_address: MAC address area start address
115 * @pch_opt_rom_start_address: Option ROM start address
116 * @ioh_type: Save IOH type
117 * @pdev: pointer to pci device struct
118 */
119 struct pch_phub_reg {
120 u32 phub_id_reg;
121 u32 q_pri_val_reg;
122 u32 rc_q_maxsize_reg;
123 u32 bri_q_maxsize_reg;
124 u32 comp_resp_timeout_reg;
125 u32 bus_slave_control_reg;
126 u32 deadlock_avoid_type_reg;
127 u32 intpin_reg_wpermit_reg0;
128 u32 intpin_reg_wpermit_reg1;
129 u32 intpin_reg_wpermit_reg2;
130 u32 intpin_reg_wpermit_reg3;
131 u32 int_reduce_control_reg[MAX_NUM_INT_REDUCE_CONTROL_REG];
132 u32 clkcfg_reg;
133 u32 funcsel_reg;
134 void __iomem *pch_phub_base_address;
135 void __iomem *pch_phub_extrom_base_address;
136 u32 pch_mac_start_address;
137 u32 pch_opt_rom_start_address;
138 int ioh_type;
139 struct pci_dev *pdev;
140 };
141
142 /* SROM SPEC for MAC address assignment offset */
143 static const int pch_phub_mac_offset[ETH_ALEN] = {0x3, 0x2, 0x1, 0x0, 0xb, 0xa};
144
145 static DEFINE_MUTEX(pch_phub_mutex);
146
147 /**
148 * pch_phub_read_modify_write_reg() - Reading modifying and writing register
149 * @reg_addr_offset: Register offset address value.
150 * @data: Writing value.
151 * @mask: Mask value.
152 */
153 static void pch_phub_read_modify_write_reg(struct pch_phub_reg *chip,
154 unsigned int reg_addr_offset,
155 unsigned int data, unsigned int mask)
156 {
157 void __iomem *reg_addr = chip->pch_phub_base_address + reg_addr_offset;
158 iowrite32(((ioread32(reg_addr) & ~mask)) | data, reg_addr);
159 }
160
161 #ifdef CONFIG_PM
162 /* pch_phub_save_reg_conf - saves register configuration */
163 static void pch_phub_save_reg_conf(struct pci_dev *pdev)
164 {
165 unsigned int i;
166 struct pch_phub_reg *chip = pci_get_drvdata(pdev);
167
168 void __iomem *p = chip->pch_phub_base_address;
169
170 chip->phub_id_reg = ioread32(p + PCH_PHUB_ID_REG);
171 chip->q_pri_val_reg = ioread32(p + PCH_PHUB_QUEUE_PRI_VAL_REG);
172 chip->rc_q_maxsize_reg = ioread32(p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG);
173 chip->bri_q_maxsize_reg = ioread32(p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG);
174 chip->comp_resp_timeout_reg =
175 ioread32(p + PCH_PHUB_COMP_RESP_TIMEOUT_REG);
176 chip->bus_slave_control_reg =
177 ioread32(p + PCH_PHUB_BUS_SLAVE_CONTROL_REG);
178 chip->deadlock_avoid_type_reg =
179 ioread32(p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG);
180 chip->intpin_reg_wpermit_reg0 =
181 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0);
182 chip->intpin_reg_wpermit_reg1 =
183 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1);
184 chip->intpin_reg_wpermit_reg2 =
185 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2);
186 chip->intpin_reg_wpermit_reg3 =
187 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3);
188 dev_dbg(&pdev->dev, "%s : "
189 "chip->phub_id_reg=%x, "
190 "chip->q_pri_val_reg=%x, "
191 "chip->rc_q_maxsize_reg=%x, "
192 "chip->bri_q_maxsize_reg=%x, "
193 "chip->comp_resp_timeout_reg=%x, "
194 "chip->bus_slave_control_reg=%x, "
195 "chip->deadlock_avoid_type_reg=%x, "
196 "chip->intpin_reg_wpermit_reg0=%x, "
197 "chip->intpin_reg_wpermit_reg1=%x, "
198 "chip->intpin_reg_wpermit_reg2=%x, "
199 "chip->intpin_reg_wpermit_reg3=%x\n", __func__,
200 chip->phub_id_reg,
201 chip->q_pri_val_reg,
202 chip->rc_q_maxsize_reg,
203 chip->bri_q_maxsize_reg,
204 chip->comp_resp_timeout_reg,
205 chip->bus_slave_control_reg,
206 chip->deadlock_avoid_type_reg,
207 chip->intpin_reg_wpermit_reg0,
208 chip->intpin_reg_wpermit_reg1,
209 chip->intpin_reg_wpermit_reg2,
210 chip->intpin_reg_wpermit_reg3);
211 for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) {
212 chip->int_reduce_control_reg[i] =
213 ioread32(p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i);
214 dev_dbg(&pdev->dev, "%s : "
215 "chip->int_reduce_control_reg[%d]=%x\n",
216 __func__, i, chip->int_reduce_control_reg[i]);
217 }
218 chip->clkcfg_reg = ioread32(p + CLKCFG_REG_OFFSET);
219 if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
220 chip->funcsel_reg = ioread32(p + FUNCSEL_REG_OFFSET);
221 }
222
223 /* pch_phub_restore_reg_conf - restore register configuration */
224 static void pch_phub_restore_reg_conf(struct pci_dev *pdev)
225 {
226 unsigned int i;
227 struct pch_phub_reg *chip = pci_get_drvdata(pdev);
228 void __iomem *p;
229 p = chip->pch_phub_base_address;
230
231 iowrite32(chip->phub_id_reg, p + PCH_PHUB_ID_REG);
232 iowrite32(chip->q_pri_val_reg, p + PCH_PHUB_QUEUE_PRI_VAL_REG);
233 iowrite32(chip->rc_q_maxsize_reg, p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG);
234 iowrite32(chip->bri_q_maxsize_reg, p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG);
235 iowrite32(chip->comp_resp_timeout_reg,
236 p + PCH_PHUB_COMP_RESP_TIMEOUT_REG);
237 iowrite32(chip->bus_slave_control_reg,
238 p + PCH_PHUB_BUS_SLAVE_CONTROL_REG);
239 iowrite32(chip->deadlock_avoid_type_reg,
240 p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG);
241 iowrite32(chip->intpin_reg_wpermit_reg0,
242 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0);
243 iowrite32(chip->intpin_reg_wpermit_reg1,
244 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1);
245 iowrite32(chip->intpin_reg_wpermit_reg2,
246 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2);
247 iowrite32(chip->intpin_reg_wpermit_reg3,
248 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3);
249 dev_dbg(&pdev->dev, "%s : "
250 "chip->phub_id_reg=%x, "
251 "chip->q_pri_val_reg=%x, "
252 "chip->rc_q_maxsize_reg=%x, "
253 "chip->bri_q_maxsize_reg=%x, "
254 "chip->comp_resp_timeout_reg=%x, "
255 "chip->bus_slave_control_reg=%x, "
256 "chip->deadlock_avoid_type_reg=%x, "
257 "chip->intpin_reg_wpermit_reg0=%x, "
258 "chip->intpin_reg_wpermit_reg1=%x, "
259 "chip->intpin_reg_wpermit_reg2=%x, "
260 "chip->intpin_reg_wpermit_reg3=%x\n", __func__,
261 chip->phub_id_reg,
262 chip->q_pri_val_reg,
263 chip->rc_q_maxsize_reg,
264 chip->bri_q_maxsize_reg,
265 chip->comp_resp_timeout_reg,
266 chip->bus_slave_control_reg,
267 chip->deadlock_avoid_type_reg,
268 chip->intpin_reg_wpermit_reg0,
269 chip->intpin_reg_wpermit_reg1,
270 chip->intpin_reg_wpermit_reg2,
271 chip->intpin_reg_wpermit_reg3);
272 for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) {
273 iowrite32(chip->int_reduce_control_reg[i],
274 p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i);
275 dev_dbg(&pdev->dev, "%s : "
276 "chip->int_reduce_control_reg[%d]=%x\n",
277 __func__, i, chip->int_reduce_control_reg[i]);
278 }
279
280 iowrite32(chip->clkcfg_reg, p + CLKCFG_REG_OFFSET);
281 if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
282 iowrite32(chip->funcsel_reg, p + FUNCSEL_REG_OFFSET);
283 }
284 #endif
285
286 /**
287 * pch_phub_read_serial_rom() - Reading Serial ROM
288 * @offset_address: Serial ROM offset address to read.
289 * @data: Read buffer for specified Serial ROM value.
290 */
291 static void pch_phub_read_serial_rom(struct pch_phub_reg *chip,
292 unsigned int offset_address, u8 *data)
293 {
294 void __iomem *mem_addr = chip->pch_phub_extrom_base_address +
295 offset_address;
296
297 *data = ioread8(mem_addr);
298 }
299
300 /**
301 * pch_phub_write_serial_rom() - Writing Serial ROM
302 * @offset_address: Serial ROM offset address.
303 * @data: Serial ROM value to write.
304 */
305 static int pch_phub_write_serial_rom(struct pch_phub_reg *chip,
306 unsigned int offset_address, u8 data)
307 {
308 void __iomem *mem_addr = chip->pch_phub_extrom_base_address +
309 (offset_address & PCH_WORD_ADDR_MASK);
310 int i;
311 unsigned int word_data;
312 unsigned int pos;
313 unsigned int mask;
314 pos = (offset_address % 4) * 8;
315 mask = ~(0xFF << pos);
316
317 iowrite32(PCH_PHUB_ROM_WRITE_ENABLE,
318 chip->pch_phub_extrom_base_address + PHUB_CONTROL);
319
320 word_data = ioread32(mem_addr);
321 iowrite32((word_data & mask) | (u32)data << pos, mem_addr);
322
323 i = 0;
324 while (ioread8(chip->pch_phub_extrom_base_address +
325 PHUB_STATUS) != 0x00) {
326 msleep(1);
327 if (i == PHUB_TIMEOUT)
328 return -ETIMEDOUT;
329 i++;
330 }
331
332 iowrite32(PCH_PHUB_ROM_WRITE_DISABLE,
333 chip->pch_phub_extrom_base_address + PHUB_CONTROL);
334
335 return 0;
336 }
337
338 /**
339 * pch_phub_read_serial_rom_val() - Read Serial ROM value
340 * @offset_address: Serial ROM address offset value.
341 * @data: Serial ROM value to read.
342 */
343 static void pch_phub_read_serial_rom_val(struct pch_phub_reg *chip,
344 unsigned int offset_address, u8 *data)
345 {
346 unsigned int mem_addr;
347
348 mem_addr = chip->pch_mac_start_address +
349 pch_phub_mac_offset[offset_address];
350
351 pch_phub_read_serial_rom(chip, mem_addr, data);
352 }
353
354 /**
355 * pch_phub_write_serial_rom_val() - writing Serial ROM value
356 * @offset_address: Serial ROM address offset value.
357 * @data: Serial ROM value.
358 */
359 static int pch_phub_write_serial_rom_val(struct pch_phub_reg *chip,
360 unsigned int offset_address, u8 data)
361 {
362 int retval;
363 unsigned int mem_addr;
364
365 mem_addr = chip->pch_mac_start_address +
366 pch_phub_mac_offset[offset_address];
367
368 retval = pch_phub_write_serial_rom(chip, mem_addr, data);
369
370 return retval;
371 }
372
373 /* pch_phub_gbe_serial_rom_conf - makes Serial ROM header format configuration
374 * for Gigabit Ethernet MAC address
375 */
376 static int pch_phub_gbe_serial_rom_conf(struct pch_phub_reg *chip)
377 {
378 int retval;
379
380 retval = pch_phub_write_serial_rom(chip, 0x0b, 0xbc);
381 retval |= pch_phub_write_serial_rom(chip, 0x0a, 0x10);
382 retval |= pch_phub_write_serial_rom(chip, 0x09, 0x01);
383 retval |= pch_phub_write_serial_rom(chip, 0x08, 0x02);
384
385 retval |= pch_phub_write_serial_rom(chip, 0x0f, 0x00);
386 retval |= pch_phub_write_serial_rom(chip, 0x0e, 0x00);
387 retval |= pch_phub_write_serial_rom(chip, 0x0d, 0x00);
388 retval |= pch_phub_write_serial_rom(chip, 0x0c, 0x80);
389
390 retval |= pch_phub_write_serial_rom(chip, 0x13, 0xbc);
391 retval |= pch_phub_write_serial_rom(chip, 0x12, 0x10);
392 retval |= pch_phub_write_serial_rom(chip, 0x11, 0x01);
393 retval |= pch_phub_write_serial_rom(chip, 0x10, 0x18);
394
395 retval |= pch_phub_write_serial_rom(chip, 0x1b, 0xbc);
396 retval |= pch_phub_write_serial_rom(chip, 0x1a, 0x10);
397 retval |= pch_phub_write_serial_rom(chip, 0x19, 0x01);
398 retval |= pch_phub_write_serial_rom(chip, 0x18, 0x19);
399
400 retval |= pch_phub_write_serial_rom(chip, 0x23, 0xbc);
401 retval |= pch_phub_write_serial_rom(chip, 0x22, 0x10);
402 retval |= pch_phub_write_serial_rom(chip, 0x21, 0x01);
403 retval |= pch_phub_write_serial_rom(chip, 0x20, 0x3a);
404
405 retval |= pch_phub_write_serial_rom(chip, 0x27, 0x01);
406 retval |= pch_phub_write_serial_rom(chip, 0x26, 0x00);
407 retval |= pch_phub_write_serial_rom(chip, 0x25, 0x00);
408 retval |= pch_phub_write_serial_rom(chip, 0x24, 0x00);
409
410 return retval;
411 }
412
413 /* pch_phub_gbe_serial_rom_conf_mp - makes SerialROM header format configuration
414 * for Gigabit Ethernet MAC address
415 */
416 static int pch_phub_gbe_serial_rom_conf_mp(struct pch_phub_reg *chip)
417 {
418 int retval;
419 u32 offset_addr;
420
421 offset_addr = 0x200;
422 retval = pch_phub_write_serial_rom(chip, 0x03 + offset_addr, 0xbc);
423 retval |= pch_phub_write_serial_rom(chip, 0x02 + offset_addr, 0x00);
424 retval |= pch_phub_write_serial_rom(chip, 0x01 + offset_addr, 0x40);
425 retval |= pch_phub_write_serial_rom(chip, 0x00 + offset_addr, 0x02);
426
427 retval |= pch_phub_write_serial_rom(chip, 0x07 + offset_addr, 0x00);
428 retval |= pch_phub_write_serial_rom(chip, 0x06 + offset_addr, 0x00);
429 retval |= pch_phub_write_serial_rom(chip, 0x05 + offset_addr, 0x00);
430 retval |= pch_phub_write_serial_rom(chip, 0x04 + offset_addr, 0x80);
431
432 retval |= pch_phub_write_serial_rom(chip, 0x0b + offset_addr, 0xbc);
433 retval |= pch_phub_write_serial_rom(chip, 0x0a + offset_addr, 0x00);
434 retval |= pch_phub_write_serial_rom(chip, 0x09 + offset_addr, 0x40);
435 retval |= pch_phub_write_serial_rom(chip, 0x08 + offset_addr, 0x18);
436
437 retval |= pch_phub_write_serial_rom(chip, 0x13 + offset_addr, 0xbc);
438 retval |= pch_phub_write_serial_rom(chip, 0x12 + offset_addr, 0x00);
439 retval |= pch_phub_write_serial_rom(chip, 0x11 + offset_addr, 0x40);
440 retval |= pch_phub_write_serial_rom(chip, 0x10 + offset_addr, 0x19);
441
442 retval |= pch_phub_write_serial_rom(chip, 0x1b + offset_addr, 0xbc);
443 retval |= pch_phub_write_serial_rom(chip, 0x1a + offset_addr, 0x00);
444 retval |= pch_phub_write_serial_rom(chip, 0x19 + offset_addr, 0x40);
445 retval |= pch_phub_write_serial_rom(chip, 0x18 + offset_addr, 0x3a);
446
447 retval |= pch_phub_write_serial_rom(chip, 0x1f + offset_addr, 0x01);
448 retval |= pch_phub_write_serial_rom(chip, 0x1e + offset_addr, 0x00);
449 retval |= pch_phub_write_serial_rom(chip, 0x1d + offset_addr, 0x00);
450 retval |= pch_phub_write_serial_rom(chip, 0x1c + offset_addr, 0x00);
451
452 return retval;
453 }
454
455 /**
456 * pch_phub_read_gbe_mac_addr() - Read Gigabit Ethernet MAC address
457 * @offset_address: Gigabit Ethernet MAC address offset value.
458 * @data: Buffer of the Gigabit Ethernet MAC address value.
459 */
460 static void pch_phub_read_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data)
461 {
462 int i;
463 for (i = 0; i < ETH_ALEN; i++)
464 pch_phub_read_serial_rom_val(chip, i, &data[i]);
465 }
466
467 /**
468 * pch_phub_write_gbe_mac_addr() - Write MAC address
469 * @offset_address: Gigabit Ethernet MAC address offset value.
470 * @data: Gigabit Ethernet MAC address value.
471 */
472 static int pch_phub_write_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data)
473 {
474 int retval;
475 int i;
476
477 if ((chip->ioh_type == 1) || (chip->ioh_type == 5)) /* EG20T or ML7831*/
478 retval = pch_phub_gbe_serial_rom_conf(chip);
479 else /* ML7223 */
480 retval = pch_phub_gbe_serial_rom_conf_mp(chip);
481 if (retval)
482 return retval;
483
484 for (i = 0; i < ETH_ALEN; i++) {
485 retval = pch_phub_write_serial_rom_val(chip, i, data[i]);
486 if (retval)
487 return retval;
488 }
489
490 return retval;
491 }
492
493 static ssize_t pch_phub_bin_read(struct file *filp, struct kobject *kobj,
494 struct bin_attribute *attr, char *buf,
495 loff_t off, size_t count)
496 {
497 unsigned int rom_signature;
498 unsigned char rom_length;
499 unsigned int tmp;
500 unsigned int addr_offset;
501 unsigned int orom_size;
502 int ret;
503 int err;
504 ssize_t rom_size;
505
506 struct pch_phub_reg *chip =
507 dev_get_drvdata(container_of(kobj, struct device, kobj));
508
509 ret = mutex_lock_interruptible(&pch_phub_mutex);
510 if (ret) {
511 err = -ERESTARTSYS;
512 goto return_err_nomutex;
513 }
514
515 /* Get Rom signature */
516 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
517 if (!chip->pch_phub_extrom_base_address)
518 goto exrom_map_err;
519
520 pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address,
521 (unsigned char *)&rom_signature);
522 rom_signature &= 0xff;
523 pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address + 1,
524 (unsigned char *)&tmp);
525 rom_signature |= (tmp & 0xff) << 8;
526 if (rom_signature == 0xAA55) {
527 pch_phub_read_serial_rom(chip,
528 chip->pch_opt_rom_start_address + 2,
529 &rom_length);
530 orom_size = rom_length * 512;
531 if (orom_size < off) {
532 addr_offset = 0;
533 goto return_ok;
534 }
535 if (orom_size < count) {
536 addr_offset = 0;
537 goto return_ok;
538 }
539
540 for (addr_offset = 0; addr_offset < count; addr_offset++) {
541 pch_phub_read_serial_rom(chip,
542 chip->pch_opt_rom_start_address + addr_offset + off,
543 &buf[addr_offset]);
544 }
545 } else {
546 err = -ENODATA;
547 goto return_err;
548 }
549 return_ok:
550 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
551 mutex_unlock(&pch_phub_mutex);
552 return addr_offset;
553
554 return_err:
555 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
556 exrom_map_err:
557 mutex_unlock(&pch_phub_mutex);
558 return_err_nomutex:
559 return err;
560 }
561
562 static ssize_t pch_phub_bin_write(struct file *filp, struct kobject *kobj,
563 struct bin_attribute *attr,
564 char *buf, loff_t off, size_t count)
565 {
566 int err;
567 unsigned int addr_offset;
568 int ret;
569 ssize_t rom_size;
570 struct pch_phub_reg *chip =
571 dev_get_drvdata(container_of(kobj, struct device, kobj));
572
573 ret = mutex_lock_interruptible(&pch_phub_mutex);
574 if (ret)
575 return -ERESTARTSYS;
576
577 if (off > PCH_PHUB_OROM_SIZE) {
578 addr_offset = 0;
579 goto return_ok;
580 }
581 if (count > PCH_PHUB_OROM_SIZE) {
582 addr_offset = 0;
583 goto return_ok;
584 }
585
586 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
587 if (!chip->pch_phub_extrom_base_address) {
588 err = -ENOMEM;
589 goto exrom_map_err;
590 }
591
592 for (addr_offset = 0; addr_offset < count; addr_offset++) {
593 if (PCH_PHUB_OROM_SIZE < off + addr_offset)
594 goto return_ok;
595
596 ret = pch_phub_write_serial_rom(chip,
597 chip->pch_opt_rom_start_address + addr_offset + off,
598 buf[addr_offset]);
599 if (ret) {
600 err = ret;
601 goto return_err;
602 }
603 }
604
605 return_ok:
606 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
607 mutex_unlock(&pch_phub_mutex);
608 return addr_offset;
609
610 return_err:
611 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
612
613 exrom_map_err:
614 mutex_unlock(&pch_phub_mutex);
615 return err;
616 }
617
618 static ssize_t show_pch_mac(struct device *dev, struct device_attribute *attr,
619 char *buf)
620 {
621 u8 mac[8];
622 struct pch_phub_reg *chip = dev_get_drvdata(dev);
623 ssize_t rom_size;
624
625 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
626 if (!chip->pch_phub_extrom_base_address)
627 return -ENOMEM;
628
629 pch_phub_read_gbe_mac_addr(chip, mac);
630 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
631
632 return sprintf(buf, "%pM\n", mac);
633 }
634
635 static ssize_t store_pch_mac(struct device *dev, struct device_attribute *attr,
636 const char *buf, size_t count)
637 {
638 u8 mac[ETH_ALEN];
639 ssize_t rom_size;
640 struct pch_phub_reg *chip = dev_get_drvdata(dev);
641 int ret;
642
643 if (!mac_pton(buf, mac))
644 return -EINVAL;
645
646 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
647 if (!chip->pch_phub_extrom_base_address)
648 return -ENOMEM;
649
650 ret = pch_phub_write_gbe_mac_addr(chip, mac);
651 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
652 if (ret)
653 return ret;
654
655 return count;
656 }
657
658 static DEVICE_ATTR(pch_mac, S_IRUGO | S_IWUSR, show_pch_mac, store_pch_mac);
659
660 static struct bin_attribute pch_bin_attr = {
661 .attr = {
662 .name = "pch_firmware",
663 .mode = S_IRUGO | S_IWUSR,
664 },
665 .size = PCH_PHUB_OROM_SIZE + 1,
666 .read = pch_phub_bin_read,
667 .write = pch_phub_bin_write,
668 };
669
670 static int pch_phub_probe(struct pci_dev *pdev,
671 const struct pci_device_id *id)
672 {
673 int ret;
674 struct pch_phub_reg *chip;
675
676 chip = kzalloc(sizeof(struct pch_phub_reg), GFP_KERNEL);
677 if (chip == NULL)
678 return -ENOMEM;
679
680 ret = pci_enable_device(pdev);
681 if (ret) {
682 dev_err(&pdev->dev,
683 "%s : pci_enable_device FAILED(ret=%d)", __func__, ret);
684 goto err_pci_enable_dev;
685 }
686 dev_dbg(&pdev->dev, "%s : pci_enable_device returns %d\n", __func__,
687 ret);
688
689 ret = pci_request_regions(pdev, KBUILD_MODNAME);
690 if (ret) {
691 dev_err(&pdev->dev,
692 "%s : pci_request_regions FAILED(ret=%d)", __func__, ret);
693 goto err_req_regions;
694 }
695 dev_dbg(&pdev->dev, "%s : "
696 "pci_request_regions returns %d\n", __func__, ret);
697
698 chip->pch_phub_base_address = pci_iomap(pdev, 1, 0);
699
700
701 if (chip->pch_phub_base_address == NULL) {
702 dev_err(&pdev->dev, "%s : pci_iomap FAILED", __func__);
703 ret = -ENOMEM;
704 goto err_pci_iomap;
705 }
706 dev_dbg(&pdev->dev, "%s : pci_iomap SUCCESS and value "
707 "in pch_phub_base_address variable is %p\n", __func__,
708 chip->pch_phub_base_address);
709
710 chip->pdev = pdev; /* Save pci device struct */
711
712 if (id->driver_data == 1) { /* EG20T PCH */
713 const char *board_name;
714
715 ret = sysfs_create_file(&pdev->dev.kobj,
716 &dev_attr_pch_mac.attr);
717 if (ret)
718 goto err_sysfs_create;
719
720 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
721 if (ret)
722 goto exit_bin_attr;
723
724 pch_phub_read_modify_write_reg(chip,
725 (unsigned int)CLKCFG_REG_OFFSET,
726 CLKCFG_CAN_50MHZ,
727 CLKCFG_CANCLK_MASK);
728
729 /* quirk for CM-iTC board */
730 board_name = dmi_get_system_info(DMI_BOARD_NAME);
731 if (board_name && strstr(board_name, "CM-iTC"))
732 pch_phub_read_modify_write_reg(chip,
733 (unsigned int)CLKCFG_REG_OFFSET,
734 CLKCFG_UART_48MHZ | CLKCFG_BAUDDIV |
735 CLKCFG_PLL2VCO | CLKCFG_UARTCLKSEL,
736 CLKCFG_UART_MASK);
737
738 /* set the prefech value */
739 iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14);
740 /* set the interrupt delay value */
741 iowrite32(0x25, chip->pch_phub_base_address + 0x44);
742 chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T;
743 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T;
744 } else if (id->driver_data == 2) { /* ML7213 IOH */
745 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
746 if (ret)
747 goto err_sysfs_create;
748 /* set the prefech value
749 * Device2(USB OHCI #1/ USB EHCI #1/ USB Device):a
750 * Device4(SDIO #0,1,2):f
751 * Device6(SATA 2):f
752 * Device8(USB OHCI #0/ USB EHCI #0):a
753 */
754 iowrite32(0x000affa0, chip->pch_phub_base_address + 0x14);
755 chip->pch_opt_rom_start_address =\
756 PCH_PHUB_ROM_START_ADDR_ML7213;
757 } else if (id->driver_data == 3) { /* ML7223 IOH Bus-m*/
758 /* set the prefech value
759 * Device8(GbE)
760 */
761 iowrite32(0x000a0000, chip->pch_phub_base_address + 0x14);
762 /* set the interrupt delay value */
763 iowrite32(0x25, chip->pch_phub_base_address + 0x140);
764 chip->pch_opt_rom_start_address =\
765 PCH_PHUB_ROM_START_ADDR_ML7223;
766 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_ML7223;
767 } else if (id->driver_data == 4) { /* ML7223 IOH Bus-n*/
768 ret = sysfs_create_file(&pdev->dev.kobj,
769 &dev_attr_pch_mac.attr);
770 if (ret)
771 goto err_sysfs_create;
772 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
773 if (ret)
774 goto exit_bin_attr;
775 /* set the prefech value
776 * Device2(USB OHCI #0,1,2,3/ USB EHCI #0):a
777 * Device4(SDIO #0,1):f
778 * Device6(SATA 2):f
779 */
780 iowrite32(0x0000ffa0, chip->pch_phub_base_address + 0x14);
781 chip->pch_opt_rom_start_address =\
782 PCH_PHUB_ROM_START_ADDR_ML7223;
783 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_ML7223;
784 } else if (id->driver_data == 5) { /* ML7831 */
785 ret = sysfs_create_file(&pdev->dev.kobj,
786 &dev_attr_pch_mac.attr);
787 if (ret)
788 goto err_sysfs_create;
789
790 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
791 if (ret)
792 goto exit_bin_attr;
793
794 /* set the prefech value */
795 iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14);
796 /* set the interrupt delay value */
797 iowrite32(0x25, chip->pch_phub_base_address + 0x44);
798 chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T;
799 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T;
800 }
801
802 chip->ioh_type = id->driver_data;
803 pci_set_drvdata(pdev, chip);
804
805 return 0;
806 exit_bin_attr:
807 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr);
808
809 err_sysfs_create:
810 pci_iounmap(pdev, chip->pch_phub_base_address);
811 err_pci_iomap:
812 pci_release_regions(pdev);
813 err_req_regions:
814 pci_disable_device(pdev);
815 err_pci_enable_dev:
816 kfree(chip);
817 dev_err(&pdev->dev, "%s returns %d\n", __func__, ret);
818 return ret;
819 }
820
821 static void pch_phub_remove(struct pci_dev *pdev)
822 {
823 struct pch_phub_reg *chip = pci_get_drvdata(pdev);
824
825 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr);
826 sysfs_remove_bin_file(&pdev->dev.kobj, &pch_bin_attr);
827 pci_iounmap(pdev, chip->pch_phub_base_address);
828 pci_release_regions(pdev);
829 pci_disable_device(pdev);
830 kfree(chip);
831 }
832
833 #ifdef CONFIG_PM
834
835 static int pch_phub_suspend(struct pci_dev *pdev, pm_message_t state)
836 {
837 int ret;
838
839 pch_phub_save_reg_conf(pdev);
840 ret = pci_save_state(pdev);
841 if (ret) {
842 dev_err(&pdev->dev,
843 " %s -pci_save_state returns %d\n", __func__, ret);
844 return ret;
845 }
846 pci_enable_wake(pdev, PCI_D3hot, 0);
847 pci_disable_device(pdev);
848 pci_set_power_state(pdev, pci_choose_state(pdev, state));
849
850 return 0;
851 }
852
853 static int pch_phub_resume(struct pci_dev *pdev)
854 {
855 int ret;
856
857 pci_set_power_state(pdev, PCI_D0);
858 pci_restore_state(pdev);
859 ret = pci_enable_device(pdev);
860 if (ret) {
861 dev_err(&pdev->dev,
862 "%s-pci_enable_device failed(ret=%d) ", __func__, ret);
863 return ret;
864 }
865
866 pci_enable_wake(pdev, PCI_D3hot, 0);
867 pch_phub_restore_reg_conf(pdev);
868
869 return 0;
870 }
871 #else
872 #define pch_phub_suspend NULL
873 #define pch_phub_resume NULL
874 #endif /* CONFIG_PM */
875
876 static struct pci_device_id pch_phub_pcidev_id[] = {
877 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH1_PHUB), 1, },
878 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7213_PHUB), 2, },
879 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7223_mPHUB), 3, },
880 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7223_nPHUB), 4, },
881 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7831_PHUB), 5, },
882 { }
883 };
884 MODULE_DEVICE_TABLE(pci, pch_phub_pcidev_id);
885
886 static struct pci_driver pch_phub_driver = {
887 .name = "pch_phub",
888 .id_table = pch_phub_pcidev_id,
889 .probe = pch_phub_probe,
890 .remove = pch_phub_remove,
891 .suspend = pch_phub_suspend,
892 .resume = pch_phub_resume
893 };
894
895 module_pci_driver(pch_phub_driver);
896
897 MODULE_DESCRIPTION("Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7223) PHUB");
898 MODULE_LICENSE("GPL");
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