2 * (C) Copyright 2009 mGine co.
3 * unsik Kim <donari75@gmail.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include "mg_disk_prv.h"
31 #ifndef CONFIG_MG_DISK_RES
32 #define CONFIG_MG_DISK_RES 0
35 #define MG_RES_SEC ((CONFIG_MG_DISK_RES) << 1)
37 static struct mg_host host;
39 static inline u32 mg_base(void)
41 return host.drv_data->base;
44 static block_dev_desc_t mg_disk_dev = {
45 .if_type = IF_TYPE_ATAPI,
46 .part_type = PART_TYPE_UNKNOWN,
47 .type = DEV_TYPE_HARDDISK,
48 .blksz = MG_SECTOR_SIZE,
51 static void mg_dump_status (const char *msg, unsigned int stat, unsigned err)
53 char *name = MG_DEV_NAME;
55 printf("%s: %s: status=0x%02x { ", name, msg, stat & 0xff);
56 if (stat & MG_REG_STATUS_BIT_BUSY)
58 if (stat & MG_REG_STATUS_BIT_READY)
59 printf("DriveReady ");
60 if (stat & MG_REG_STATUS_BIT_WRITE_FAULT)
61 printf("WriteFault ");
62 if (stat & MG_REG_STATUS_BIT_SEEK_DONE)
63 printf("SeekComplete ");
64 if (stat & MG_REG_STATUS_BIT_DATA_REQ)
65 printf("DataRequest ");
66 if (stat & MG_REG_STATUS_BIT_CORRECTED_ERROR)
67 printf("CorrectedError ");
68 if (stat & MG_REG_STATUS_BIT_ERROR)
72 if ((stat & MG_REG_STATUS_BIT_ERROR)) {
73 printf("%s: %s: error=0x%02x { ", name, msg, err & 0xff);
74 if (err & MG_REG_ERR_BBK)
76 if (err & MG_REG_ERR_UNC)
77 printf("UncorrectableError ");
78 if (err & MG_REG_ERR_IDNF)
79 printf("SectorIdNotFound ");
80 if (err & MG_REG_ERR_ABRT)
81 printf("DriveStatusError ");
82 if (err & MG_REG_ERR_AMNF)
83 printf("AddrMarkNotFound ");
88 static unsigned int mg_wait (u32 expect, u32 msec)
97 status = readb(mg_base() + MG_REG_STATUS);
99 cur = get_timer(from);
100 if (status & MG_REG_STATUS_BIT_BUSY) {
101 if (expect == MG_REG_STATUS_BIT_BUSY)
104 /* Check the error condition! */
105 if (status & MG_REG_STATUS_BIT_ERROR) {
106 err = readb(mg_base() + MG_REG_ERROR);
107 mg_dump_status("mg_wait", status, err);
111 if (expect == MG_STAT_READY)
112 if (MG_READY_OK(status))
115 if (expect == MG_REG_STATUS_BIT_DATA_REQ)
116 if (status & MG_REG_STATUS_BIT_DATA_REQ)
119 status = readb(mg_base() + MG_REG_STATUS);
120 } while (cur < msec);
123 err = MG_ERR_TIMEOUT;
128 static int mg_get_disk_id (void)
130 u16 id[(MG_SECTOR_SIZE / sizeof(u16))];
131 hd_driveid_t *iop = (hd_driveid_t *)id;
134 writeb(MG_CMD_ID, mg_base() + MG_REG_COMMAND);
135 err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000);
139 for(i = 0; i < (MG_SECTOR_SIZE / sizeof(u16)); i++)
140 id[i] = readw(mg_base() + MG_BUFF_OFFSET + i * 2);
142 writeb(MG_CMD_RD_CONF, mg_base() + MG_REG_COMMAND);
143 err = mg_wait(MG_STAT_READY, 3000);
147 ata_swap_buf_le16(id, MG_SECTOR_SIZE / sizeof(u16));
149 if((iop->field_valid & 1) == 0)
150 return MG_ERR_TRANSLATION;
152 ata_id_c_string(id, (unsigned char *)mg_disk_dev.revision,
153 ATA_ID_FW_REV, sizeof(mg_disk_dev.revision));
154 ata_id_c_string(id, (unsigned char *)mg_disk_dev.vendor,
155 ATA_ID_PROD, sizeof(mg_disk_dev.vendor));
156 ata_id_c_string(id, (unsigned char *)mg_disk_dev.product,
157 ATA_ID_SERNO, sizeof(mg_disk_dev.product));
160 iop->lba_capacity = (iop->lba_capacity << 16) |
161 (iop->lba_capacity >> 16);
162 #endif /* __BIG_ENDIAN */
165 MG_DBG("MG_RES_SEC=%d\n", MG_RES_SEC);
166 iop->cyls = (iop->lba_capacity - MG_RES_SEC) /
167 iop->sectors / iop->heads;
168 res = iop->lba_capacity -
169 iop->cyls * iop->heads * iop->sectors;
170 iop->lba_capacity -= res;
171 printf("mg_disk: %d sectors reserved\n", res);
174 mg_disk_dev.lba = iop->lba_capacity;
178 static int mg_disk_reset (void)
180 struct mg_drv_data *prv_data = host.drv_data;
185 prv_data->mg_hdrst_pin(0);
186 err = mg_wait(MG_REG_STATUS_BIT_BUSY, 300);
191 prv_data->mg_hdrst_pin(1);
192 err = mg_wait(MG_STAT_READY, 3000);
197 writeb(MG_REG_CTRL_RESET | MG_REG_CTRL_INTR_DISABLE,
198 mg_base() + MG_REG_DRV_CTRL);
199 err = mg_wait(MG_REG_STATUS_BIT_BUSY, 3000);
204 writeb(MG_REG_CTRL_INTR_DISABLE, mg_base() + MG_REG_DRV_CTRL);
205 err = mg_wait(MG_STAT_READY, 3000);
209 init_status = readb(mg_base() + MG_REG_STATUS) & 0xf;
211 if (init_status == 0xf)
212 return MG_ERR_INIT_STAT;
218 static unsigned int mg_out(unsigned int sect_num,
219 unsigned int sect_cnt,
222 u32 err = MG_ERR_NONE;
224 err = mg_wait(MG_STAT_READY, 3000);
228 writeb((u8)sect_cnt, mg_base() + MG_REG_SECT_CNT);
229 writeb((u8)sect_num, mg_base() + MG_REG_SECT_NUM);
230 writeb((u8)(sect_num >> 8), mg_base() + MG_REG_CYL_LOW);
231 writeb((u8)(sect_num >> 16), mg_base() + MG_REG_CYL_HIGH);
232 writeb((u8)((sect_num >> 24) | MG_REG_HEAD_LBA_MODE),
233 mg_base() + MG_REG_DRV_HEAD);
234 writeb(cmd, mg_base() + MG_REG_COMMAND);
239 static unsigned int mg_do_read_sects(void *buff, u32 sect_num, u32 sect_cnt)
243 union mg_uniwb uniwb;
245 err = mg_out(sect_num, sect_cnt, MG_CMD_RD);
249 for (i = 0; i < sect_cnt; i++) {
250 err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000);
254 if ((u32)buff_ptr & 1) {
255 for (j = 0; j < MG_SECTOR_SIZE >> 1; j++) {
256 uniwb.w = readw(mg_base() + MG_BUFF_OFFSET
258 *buff_ptr++ = uniwb.b[0];
259 *buff_ptr++ = uniwb.b[1];
262 for(j = 0; j < MG_SECTOR_SIZE >> 1; j++) {
263 *(u16 *)buff_ptr = readw(mg_base() +
264 MG_BUFF_OFFSET + (j << 1));
268 writeb(MG_CMD_RD_CONF, mg_base() + MG_REG_COMMAND);
270 MG_DBG("%u (0x%8.8x) sector read", sect_num + i,
271 (sect_num + i) * MG_SECTOR_SIZE);
277 unsigned int mg_disk_read_sects(void *buff, u32 sect_num, u32 sect_cnt)
279 u32 quotient, residue, i, err;
282 quotient = sect_cnt >> 8;
283 residue = sect_cnt % 256;
285 for (i = 0; i < quotient; i++) {
286 MG_DBG("sect num : %u buff : 0x%8.8x", sect_num, (u32)buff_ptr);
287 err = mg_do_read_sects(buff_ptr, sect_num, 256);
291 buff_ptr += 256 * MG_SECTOR_SIZE;
295 MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr);
296 err = mg_do_read_sects(buff_ptr, sect_num, residue);
302 unsigned long mg_block_read (int dev, unsigned long start,
303 lbaint_t blkcnt, void *buffer)
306 if (! mg_disk_read_sects(buffer, start, blkcnt))
312 unsigned int mg_disk_read (u32 addr, u8 *buff, u32 len)
314 u8 *sect_buff, *buff_ptr = buff;
315 u32 cur_addr, next_sec_addr, end_addr, cnt, sect_num;
316 u32 err = MG_ERR_NONE;
318 /* TODO : sanity chk */
321 end_addr = addr + len;
323 sect_buff = malloc(MG_SECTOR_SIZE);
325 if (cur_addr & MG_SECTOR_SIZE_MASK) {
326 next_sec_addr = (cur_addr + MG_SECTOR_SIZE) &
327 ~MG_SECTOR_SIZE_MASK;
328 sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
329 err = mg_disk_read_sects(sect_buff, sect_num, 1);
333 if (end_addr < next_sec_addr) {
335 sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
336 end_addr - cur_addr);
337 MG_DBG("copies %u byte from sector offset 0x%8.8x",
338 end_addr - cur_addr, cur_addr);
342 sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
343 next_sec_addr - cur_addr);
344 MG_DBG("copies %u byte from sector offset 0x%8.8x",
345 next_sec_addr - cur_addr, cur_addr);
346 buff_ptr += (next_sec_addr - cur_addr);
347 cur_addr = next_sec_addr;
351 if (cur_addr < end_addr) {
352 sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
353 cnt = ((end_addr & ~MG_SECTOR_SIZE_MASK) - cur_addr) >>
354 MG_SECTOR_SIZE_SHIFT;
357 err = mg_disk_read_sects(buff_ptr, sect_num, cnt);
361 buff_ptr += cnt * MG_SECTOR_SIZE;
362 cur_addr += cnt * MG_SECTOR_SIZE;
364 if (cur_addr < end_addr) {
365 sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
366 err = mg_disk_read_sects(sect_buff, sect_num, 1);
369 memcpy(buff_ptr, sect_buff, end_addr - cur_addr);
370 MG_DBG("copies %u byte", end_addr - cur_addr);
379 static int mg_do_write_sects(void *buff, u32 sect_num, u32 sect_cnt)
383 union mg_uniwb uniwb;
385 err = mg_out(sect_num, sect_cnt, MG_CMD_WR);
389 for (i = 0; i < sect_cnt; i++) {
390 err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000);
394 if ((u32)buff_ptr & 1) {
395 uniwb.b[0] = *buff_ptr++;
396 uniwb.b[1] = *buff_ptr++;
397 writew(uniwb.w, mg_base() + MG_BUFF_OFFSET + (j << 1));
399 for(j = 0; j < MG_SECTOR_SIZE >> 1; j++) {
400 writew(*(u16 *)buff_ptr,
401 mg_base() + MG_BUFF_OFFSET +
406 writeb(MG_CMD_WR_CONF, mg_base() + MG_REG_COMMAND);
408 MG_DBG("%u (0x%8.8x) sector write",
409 sect_num + i, (sect_num + i) * MG_SECTOR_SIZE);
415 unsigned int mg_disk_write_sects(void *buff, u32 sect_num, u32 sect_cnt)
417 u32 quotient, residue, i;
418 u32 err = MG_ERR_NONE;
421 quotient = sect_cnt >> 8;
422 residue = sect_cnt % 256;
424 for (i = 0; i < quotient; i++) {
425 MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr);
426 err = mg_do_write_sects(buff_ptr, sect_num, 256);
430 buff_ptr += 256 * MG_SECTOR_SIZE;
434 MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr);
435 err = mg_do_write_sects(buff_ptr, sect_num, residue);
441 unsigned long mg_block_write (int dev, unsigned long start,
442 lbaint_t blkcnt, const void *buffer)
445 if (!mg_disk_write_sects((void *)buffer, start, blkcnt))
451 unsigned int mg_disk_write(u32 addr, u8 *buff, u32 len)
453 u8 *sect_buff, *buff_ptr = buff;
454 u32 cur_addr, next_sec_addr, end_addr, cnt, sect_num;
455 u32 err = MG_ERR_NONE;
457 /* TODO : sanity chk */
460 end_addr = addr + len;
462 sect_buff = malloc(MG_SECTOR_SIZE);
464 if (cur_addr & MG_SECTOR_SIZE_MASK) {
466 next_sec_addr = (cur_addr + MG_SECTOR_SIZE) &
467 ~MG_SECTOR_SIZE_MASK;
468 sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
469 err = mg_disk_read_sects(sect_buff, sect_num, 1);
473 if (end_addr < next_sec_addr) {
474 memcpy(sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
475 buff_ptr, end_addr - cur_addr);
476 MG_DBG("copies %u byte to sector offset 0x%8.8x",
477 end_addr - cur_addr, cur_addr);
480 memcpy(sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
481 buff_ptr, next_sec_addr - cur_addr);
482 MG_DBG("copies %u byte to sector offset 0x%8.8x",
483 next_sec_addr - cur_addr, cur_addr);
484 buff_ptr += (next_sec_addr - cur_addr);
485 cur_addr = next_sec_addr;
488 err = mg_disk_write_sects(sect_buff, sect_num, 1);
493 if (cur_addr < end_addr) {
495 sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
496 cnt = ((end_addr & ~MG_SECTOR_SIZE_MASK) - cur_addr) >>
497 MG_SECTOR_SIZE_SHIFT;
500 err = mg_disk_write_sects(buff_ptr, sect_num, cnt);
504 buff_ptr += cnt * MG_SECTOR_SIZE;
505 cur_addr += cnt * MG_SECTOR_SIZE;
507 if (cur_addr < end_addr) {
508 sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
509 err = mg_disk_read_sects(sect_buff, sect_num, 1);
512 memcpy(sect_buff, buff_ptr, end_addr - cur_addr);
513 MG_DBG("copies %u byte", end_addr - cur_addr);
514 err = mg_disk_write_sects(sect_buff, sect_num, 1);
525 block_dev_desc_t *mg_disk_get_dev(int dev)
527 return ((block_dev_desc_t *) & mg_disk_dev);
530 /* must override this function */
531 struct mg_drv_data * __attribute__((weak)) mg_get_drv_data (void)
533 puts ("### WARNING ### port mg_get_drv_data function\n");
537 unsigned int mg_disk_init (void)
539 struct mg_drv_data *prv_data;
540 u32 err = MG_ERR_NONE;
542 prv_data = mg_get_drv_data();
544 printf("%s:%d fail (no driver_data)\n", __func__, __LINE__);
545 err = MG_ERR_NO_DRV_DATA;
549 ((struct mg_host *)mg_disk_dev.priv)->drv_data = prv_data;
552 if (prv_data->mg_ctrl_pin_init)
553 prv_data->mg_ctrl_pin_init();
555 if (! prv_data->mg_hdrst_pin) {
556 err = MG_ERR_CTRL_RST;
561 err = mg_disk_reset();
563 printf("%s:%d fail (err code : %d)\n", __func__, __LINE__, err);
568 err = mg_get_disk_id();
570 printf("%s:%d fail (err code : %d)\n", __func__, __LINE__, err);
574 mg_disk_dev.block_read = mg_block_read;
575 mg_disk_dev.block_write = mg_block_write;
577 init_part(&mg_disk_dev);
579 dev_print(&mg_disk_dev);