1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) Excito Elektronik i Skåne AB, All rights reserved.
4 * Author: Tor Krill <tor@excito.com>
6 * This is a driver for Silicon Image sil3114 sata chip modelled on
14 #include <asm/byteorder.h>
19 #include "sata_sil3114.h"
21 /* Convert sectorsize to wordsize */
22 #define ATA_SECTOR_WORDS (ATA_SECT_SIZE/2)
25 u8 sil3114_spin_up (int num);
26 u8 sil3114_spin_down (int num);
27 static int sata_bus_softreset (int num);
28 static void sata_identify (int num, int dev);
29 static u8 check_power_mode (int num);
30 static void sata_port (struct sata_ioports *ioport);
31 static void set_Feature_cmd (int num, int dev);
32 static u8 sata_busy_wait (struct sata_ioports *ioaddr, int bits,
33 unsigned int max, u8 usealtstatus);
34 static u8 sata_chk_status (struct sata_ioports *ioaddr, u8 usealtstatus);
35 static void msleep (int count);
37 static u32 iobase[6] = { 0, 0, 0, 0, 0, 0}; /* PCI BAR registers for device */
39 static struct sata_port port[CONFIG_SYS_SATA_MAX_DEVICE];
41 static void output_data (struct sata_ioports *ioaddr, u16 * sect_buf, int words)
44 __raw_writew (*sect_buf++, (void *)ioaddr->data_addr);
48 static int input_data (struct sata_ioports *ioaddr, u16 * sect_buf, int words)
51 *sect_buf++ = __raw_readw ((void *)ioaddr->data_addr);
56 static int sata_bus_softreset (int num)
60 port[num].dev_mask = 1;
62 port[num].ctl_reg = 0x08; /*Default value of control reg */
63 writeb (port[num].ctl_reg, port[num].ioaddr.ctl_addr);
65 writeb (port[num].ctl_reg | ATA_SRST, port[num].ioaddr.ctl_addr);
67 writeb (port[num].ctl_reg, port[num].ioaddr.ctl_addr);
69 /* spec mandates ">= 2ms" before checking status.
70 * We wait 150ms, because that was the magic delay used for
71 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
72 * between when the ATA command register is written, and then
73 * status is checked. Because waiting for "a while" before
74 * checking status is fine, post SRST, we perform this magic
78 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 300, 0);
79 while ((status & ATA_BUSY)) {
81 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 3, 0);
84 if (status & ATA_BUSY) {
85 printf ("ata%u is slow to respond,plz be patient\n", num);
88 while ((status & ATA_BUSY)) {
90 status = sata_chk_status (&port[num].ioaddr, 0);
93 if (status & ATA_BUSY) {
94 printf ("ata%u failed to respond : ", num);
95 printf ("bus reset failed\n");
96 port[num].dev_mask = 0;
102 static void sata_identify (int num, int dev)
104 u8 cmd = 0, status = 0, devno = num;
105 u16 iobuf[ATA_SECTOR_WORDS];
108 memset (iobuf, 0, sizeof (iobuf));
110 if (!(port[num].dev_mask & 0x01)) {
111 printf ("dev%d is not present on port#%d\n", dev, num);
115 debug ("port=%d dev=%d\n", num, dev);
118 cmd = ATA_CMD_ID_ATA; /*Device Identify Command */
119 writeb (cmd, port[num].ioaddr.command_addr);
120 readb (port[num].ioaddr.altstatus_addr);
123 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 1000, 0);
124 if (status & ATA_ERR) {
125 printf ("\ndevice not responding\n");
126 port[num].dev_mask &= ~0x01;
130 input_data (&port[num].ioaddr, iobuf, ATA_SECTOR_WORDS);
132 ata_swap_buf_le16 (iobuf, ATA_SECTOR_WORDS);
134 debug ("Specific config: %x\n", iobuf[2]);
136 /* we require LBA and DMA support (bits 8 & 9 of word 49) */
137 if (!ata_id_has_dma (iobuf) || !ata_id_has_lba (iobuf)) {
138 debug ("ata%u: no dma/lba\n", num);
143 n_sectors = ata_id_n_sectors (iobuf);
145 if (n_sectors == 0) {
146 port[num].dev_mask &= ~0x01;
149 ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].revision,
150 ATA_ID_FW_REV, sizeof (sata_dev_desc[devno].revision));
151 ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].vendor,
152 ATA_ID_PROD, sizeof (sata_dev_desc[devno].vendor));
153 ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].product,
154 ATA_ID_SERNO, sizeof (sata_dev_desc[devno].product));
156 /* TODO - atm we asume harddisk ie not removable */
157 sata_dev_desc[devno].removable = 0;
159 sata_dev_desc[devno].lba = (u32) n_sectors;
160 debug("lba=0x%lx\n", sata_dev_desc[devno].lba);
163 if (iobuf[83] & (1 << 10)) {
164 sata_dev_desc[devno].lba48 = 1;
166 sata_dev_desc[devno].lba48 = 0;
171 sata_dev_desc[devno].type = DEV_TYPE_HARDDISK;
172 sata_dev_desc[devno].blksz = ATA_SECT_SIZE;
173 sata_dev_desc[devno].lun = 0; /* just to fill something in... */
176 static void set_Feature_cmd (int num, int dev)
180 if (!(port[num].dev_mask & 0x01)) {
181 debug ("dev%d is not present on port#%d\n", dev, num);
185 writeb (SETFEATURES_XFER, port[num].ioaddr.feature_addr);
186 writeb (XFER_PIO_4, port[num].ioaddr.nsect_addr);
187 writeb (0, port[num].ioaddr.lbal_addr);
188 writeb (0, port[num].ioaddr.lbam_addr);
189 writeb (0, port[num].ioaddr.lbah_addr);
191 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
192 writeb (ATA_CMD_SET_FEATURES, port[num].ioaddr.command_addr);
197 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 5000, 0);
198 if ((status & (ATA_BUSY | ATA_ERR))) {
199 printf ("Error : status 0x%02x\n", status);
200 port[num].dev_mask &= ~0x01;
204 u8 sil3114_spin_down (int num)
208 debug ("Spin down disk\n");
210 if (!(port[num].dev_mask & 0x01)) {
211 debug ("Device ata%d is not present\n", num);
215 if ((status = check_power_mode (num)) == 0x00) {
216 debug ("Already in standby\n");
220 if (status == 0x01) {
221 printf ("Failed to check power mode on ata%d\n", num);
225 if (!((status = sata_chk_status (&port[num].ioaddr, 0)) & ATA_DRDY)) {
226 printf ("Device ata%d not ready\n", num);
230 writeb (0x00, port[num].ioaddr.feature_addr);
232 writeb (0x00, port[num].ioaddr.nsect_addr);
233 writeb (0x00, port[num].ioaddr.lbal_addr);
234 writeb (0x00, port[num].ioaddr.lbam_addr);
235 writeb (0x00, port[num].ioaddr.lbah_addr);
237 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
238 writeb (ATA_CMD_STANDBY, port[num].ioaddr.command_addr);
240 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 30000, 0);
241 if ((status & (ATA_BUSY | ATA_ERR))) {
242 printf ("Error waiting for disk spin down: status 0x%02x\n",
244 port[num].dev_mask &= ~0x01;
250 u8 sil3114_spin_up (int num)
254 debug ("Spin up disk\n");
256 if (!(port[num].dev_mask & 0x01)) {
257 debug ("Device ata%d is not present\n", num);
261 if ((status = check_power_mode (num)) != 0x00) {
262 if (status == 0x01) {
263 printf ("Failed to check power mode on ata%d\n", num);
266 /* should be up and running already */
271 if (!((status = sata_chk_status (&port[num].ioaddr, 0)) & ATA_DRDY)) {
272 printf ("Device ata%d not ready\n", num);
276 debug ("Stautus of device check: %d\n", status);
278 writeb (0x00, port[num].ioaddr.feature_addr);
280 writeb (0x00, port[num].ioaddr.nsect_addr);
281 writeb (0x00, port[num].ioaddr.lbal_addr);
282 writeb (0x00, port[num].ioaddr.lbam_addr);
283 writeb (0x00, port[num].ioaddr.lbah_addr);
285 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
286 writeb (ATA_CMD_IDLE, port[num].ioaddr.command_addr);
288 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 30000, 0);
289 if ((status & (ATA_BUSY | ATA_ERR))) {
290 printf ("Error waiting for disk spin up: status 0x%02x\n",
292 port[num].dev_mask &= ~0x01;
296 /* Wait for disk to enter Active state */
299 status = check_power_mode (num);
300 } while ((status == 0x00) || (status == 0x80));
302 if (status == 0x01) {
303 printf ("Falied waiting for disk to spin up\n");
310 /* Return value is not the usual here
311 * 0x00 - Device stand by
312 * 0x01 - Operation failed
314 * 0xff - Device active
316 static u8 check_power_mode (int num)
320 if (!(port[num].dev_mask & 0x01)) {
321 debug ("Device ata%d is not present\n", num);
325 if (!(sata_chk_status (&port[num].ioaddr, 0) & ATA_DRDY)) {
326 printf ("Device ata%d not ready\n", num);
330 writeb (0, port[num].ioaddr.feature_addr);
331 writeb (0, port[num].ioaddr.nsect_addr);
332 writeb (0, port[num].ioaddr.lbal_addr);
333 writeb (0, port[num].ioaddr.lbam_addr);
334 writeb (0, port[num].ioaddr.lbah_addr);
336 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
337 writeb (ATA_CMD_CHK_POWER, port[num].ioaddr.command_addr);
339 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 5000, 0);
340 if ((status & (ATA_BUSY | ATA_ERR))) {
342 ("Error waiting for check power mode complete : status 0x%02x\n",
344 port[num].dev_mask &= ~0x01;
347 res = readb (port[num].ioaddr.nsect_addr);
348 debug ("Check powermode: %d\n", res);
353 static void sata_port (struct sata_ioports *ioport)
355 ioport->data_addr = ioport->cmd_addr + ATA_REG_DATA;
356 ioport->error_addr = ioport->cmd_addr + ATA_REG_ERR;
357 ioport->feature_addr = ioport->cmd_addr + ATA_REG_FEATURE;
358 ioport->nsect_addr = ioport->cmd_addr + ATA_REG_NSECT;
359 ioport->lbal_addr = ioport->cmd_addr + ATA_REG_LBAL;
360 ioport->lbam_addr = ioport->cmd_addr + ATA_REG_LBAM;
361 ioport->lbah_addr = ioport->cmd_addr + ATA_REG_LBAH;
362 ioport->device_addr = ioport->cmd_addr + ATA_REG_DEVICE;
363 ioport->status_addr = ioport->cmd_addr + ATA_REG_STATUS;
364 ioport->command_addr = ioport->cmd_addr + ATA_REG_CMD;
367 static u8 wait_for_irq (int num, unsigned int max)
370 u32 port = iobase[5];
373 port += VND_TF_CNST_CH0;
376 port += VND_TF_CNST_CH1;
379 port += VND_TF_CNST_CH2;
382 port += VND_TF_CNST_CH3;
389 if (readl (port) & VND_TF_CNST_INTST) {
399 static u8 sata_busy_wait (struct sata_ioports *ioaddr, int bits,
400 unsigned int max, u8 usealtstatus)
405 if (!((status = sata_chk_status (ioaddr, usealtstatus)) & bits)) {
410 } while ((status & bits) && (max > 0));
415 static u8 sata_chk_status (struct sata_ioports *ioaddr, u8 usealtstatus)
418 return readb (ioaddr->status_addr);
420 return readb (ioaddr->altstatus_addr);
424 static void msleep (int count)
428 for (i = 0; i < count; i++)
432 /* Read up to 255 sectors
434 * Returns sectors read
436 static u8 do_one_read (int device, ulong block, u8 blkcnt, u16 * buff,
442 u64 blknr = (u64) block;
444 if (!(sata_chk_status (&port[device].ioaddr, 0) & ATA_DRDY)) {
445 printf ("Device ata%d not ready\n", device);
449 /* Set up transfer */
452 /* write high bits */
453 writeb (0, port[device].ioaddr.nsect_addr);
454 writeb ((blknr >> 24) & 0xFF, port[device].ioaddr.lbal_addr);
455 writeb ((blknr >> 32) & 0xFF, port[device].ioaddr.lbam_addr);
456 writeb ((blknr >> 40) & 0xFF, port[device].ioaddr.lbah_addr);
459 writeb (blkcnt, port[device].ioaddr.nsect_addr);
460 writeb (((blknr) >> 0) & 0xFF, port[device].ioaddr.lbal_addr);
461 writeb ((blknr >> 8) & 0xFF, port[device].ioaddr.lbam_addr);
462 writeb ((blknr >> 16) & 0xFF, port[device].ioaddr.lbah_addr);
466 writeb (ATA_LBA, port[device].ioaddr.device_addr);
467 writeb (ATA_CMD_PIO_READ_EXT, port[device].ioaddr.command_addr);
471 writeb (ATA_LBA | ((blknr >> 24) & 0xF),
472 port[device].ioaddr.device_addr);
473 writeb (ATA_CMD_PIO_READ, port[device].ioaddr.command_addr);
476 status = sata_busy_wait (&port[device].ioaddr, ATA_BUSY, 10000, 1);
478 if (status & ATA_BUSY) {
481 printf ("Device %d not responding status %d\n", device, status);
482 err = readb (port[device].ioaddr.error_addr);
483 printf ("Error reg = 0x%x\n", err);
489 if (wait_for_irq (device, 500)) {
490 printf ("ata%u irq failed\n", device);
494 status = sata_chk_status (&port[device].ioaddr, 0);
495 if (status & ATA_ERR) {
496 printf ("ata%u error %d\n", device,
497 readb (port[device].ioaddr.error_addr));
500 /* Read one sector */
501 input_data (&port[device].ioaddr, buff, ATA_SECTOR_WORDS);
502 buff += ATA_SECTOR_WORDS;
509 ulong sata_read (int device, ulong block, lbaint_t blkcnt, void *buff)
512 u16 *buffer = (u16 *) buff;
514 u64 blknr = (u64) block;
515 unsigned char lba48 = 0;
518 if (blknr > 0xfffffff) {
519 if (!sata_dev_desc[device].lba48) {
520 printf ("Drive doesn't support 48-bit addressing\n");
523 /* more than 28 bits used, use 48bit mode */
536 status = do_one_read (device, blknr, sread, buffer, lba48);
537 if (status != sread) {
538 printf ("Read failed\n");
545 buffer += sread * ATA_SECTOR_WORDS;
550 ulong sata_write (int device, ulong block, lbaint_t blkcnt, const void *buff)
553 u16 *buffer = (u16 *) buff;
554 unsigned char status = 0, num = 0;
555 u64 blknr = (u64) block;
557 unsigned char lba48 = 0;
559 if (blknr > 0xfffffff) {
560 if (!sata_dev_desc[device].lba48) {
561 printf ("Drive doesn't support 48-bit addressing\n");
564 /* more than 28 bits used, use 48bit mode */
571 while (blkcnt-- > 0) {
572 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 500, 0);
573 if (status & ATA_BUSY) {
574 printf ("ata%u failed to respond\n", port[num].port_no);
579 /* write high bits */
580 writeb (0, port[num].ioaddr.nsect_addr);
581 writeb ((blknr >> 24) & 0xFF,
582 port[num].ioaddr.lbal_addr);
583 writeb ((blknr >> 32) & 0xFF,
584 port[num].ioaddr.lbam_addr);
585 writeb ((blknr >> 40) & 0xFF,
586 port[num].ioaddr.lbah_addr);
589 writeb (1, port[num].ioaddr.nsect_addr);
590 writeb ((blknr >> 0) & 0xFF, port[num].ioaddr.lbal_addr);
591 writeb ((blknr >> 8) & 0xFF, port[num].ioaddr.lbam_addr);
592 writeb ((blknr >> 16) & 0xFF, port[num].ioaddr.lbah_addr);
595 writeb (ATA_LBA, port[num].ioaddr.device_addr);
596 writeb (ATA_CMD_PIO_WRITE_EXT, port[num].ioaddr.command_addr);
600 writeb (ATA_LBA | ((blknr >> 24) & 0xF),
601 port[num].ioaddr.device_addr);
602 writeb (ATA_CMD_PIO_WRITE, port[num].ioaddr.command_addr);
606 /*may take up to 4 sec */
607 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 4000, 0);
608 if ((status & (ATA_DRQ | ATA_BUSY | ATA_ERR)) != ATA_DRQ) {
609 printf ("Error no DRQ dev %d blk %ld: sts 0x%02x\n",
610 device, (ulong) blknr, status);
614 output_data (&port[num].ioaddr, buffer, ATA_SECTOR_WORDS);
615 readb (port[num].ioaddr.altstatus_addr);
620 buffer += ATA_SECTOR_WORDS;
625 /* Driver implementation */
626 static u8 sil_get_device_cache_line (pci_dev_t pdev)
629 pci_read_config_byte (pdev, PCI_CACHE_LINE_SIZE, &cache_line);
633 int init_sata (int dev)
635 static u8 init_done = 0;
648 if ((devno = pci_find_device (SIL_VEND_ID, SIL3114_DEVICE_ID, 0)) == -1) {
653 /* Read out all BARs, even though we only use MMIO from BAR5 */
654 pci_read_config_dword (devno, PCI_BASE_ADDRESS_0, &iobase[0]);
655 pci_read_config_dword (devno, PCI_BASE_ADDRESS_1, &iobase[1]);
656 pci_read_config_dword (devno, PCI_BASE_ADDRESS_2, &iobase[2]);
657 pci_read_config_dword (devno, PCI_BASE_ADDRESS_3, &iobase[3]);
658 pci_read_config_dword (devno, PCI_BASE_ADDRESS_4, &iobase[4]);
659 pci_read_config_dword (devno, PCI_BASE_ADDRESS_5, &iobase[5]);
661 if ((iobase[0] == 0xFFFFFFFF) || (iobase[1] == 0xFFFFFFFF) ||
662 (iobase[2] == 0xFFFFFFFF) || (iobase[3] == 0xFFFFFFFF) ||
663 (iobase[4] == 0xFFFFFFFF) || (iobase[5] == 0xFFFFFFFF)) {
664 printf ("Error no base addr for SATA controller\n");
669 /* mask off unused bits */
670 iobase[0] &= 0xfffffffc;
671 iobase[1] &= 0xfffffff8;
672 iobase[2] &= 0xfffffffc;
673 iobase[3] &= 0xfffffff8;
674 iobase[4] &= 0xfffffff0;
675 iobase[5] &= 0xfffffc00;
677 /* from sata_sil in Linux kernel */
678 cls = sil_get_device_cache_line (devno);
681 cls++; /* cls = (line_size/8)+1 */
682 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH0);
683 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH1);
684 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH2);
685 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH3);
687 printf ("Cache line not set. Driver may not function\n");
690 /* Enable operation */
691 pci_read_config_word (devno, PCI_COMMAND, &cmd);
692 cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
693 pci_write_config_word (devno, PCI_COMMAND, cmd);
695 /* Disable interrupt usage */
696 pci_read_config_dword (devno, VND_SYSCONFSTAT, &sconf);
697 sconf |= (VND_SYSCONFSTAT_CHN_0_INTBLOCK | VND_SYSCONFSTAT_CHN_1_INTBLOCK);
698 pci_write_config_dword (devno, VND_SYSCONFSTAT, sconf);
704 int reset_sata(int dev)
709 /* Check if device is connected to port */
710 int sata_bus_probe (int portno)
712 u32 port = iobase[5];
716 port += VND_SSTATUS_CH0;
719 port += VND_SSTATUS_CH1;
722 port += VND_SSTATUS_CH2;
725 port += VND_SSTATUS_CH3;
731 if ((val & SATA_DET_PRES) == SATA_DET_PRES) {
738 int sata_phy_reset (int portno)
740 u32 port = iobase[5];
744 port += VND_SCONTROL_CH0;
747 port += VND_SCONTROL_CH1;
750 port += VND_SCONTROL_CH2;
753 port += VND_SCONTROL_CH3;
759 writel (val | SATA_SC_DET_RST, port);
761 writel (val & ~SATA_SC_DET_RST, port);
765 int scan_sata (int dev)
767 /* A bit brain dead, but the code has a legacy */
771 port[0].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH0;
772 port[0].ioaddr.altstatus_addr = port[0].ioaddr.ctl_addr =
773 (iobase[5] + VND_TF2_CH0) | ATA_PCI_CTL_OFS;
774 port[0].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH0;
776 #if (CONFIG_SYS_SATA_MAX_DEVICE >= 1)
779 port[1].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH1;
780 port[1].ioaddr.altstatus_addr = port[1].ioaddr.ctl_addr =
781 (iobase[5] + VND_TF2_CH1) | ATA_PCI_CTL_OFS;
782 port[1].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH1;
784 #elif (CONFIG_SYS_SATA_MAX_DEVICE >= 2)
787 port[2].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH2;
788 port[2].ioaddr.altstatus_addr = port[2].ioaddr.ctl_addr =
789 (iobase[5] + VND_TF2_CH2) | ATA_PCI_CTL_OFS;
790 port[2].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH2;
792 #elif (CONFIG_SYS_SATA_MAX_DEVICE >= 3)
795 port[3].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH3;
796 port[3].ioaddr.altstatus_addr = port[3].ioaddr.ctl_addr =
797 (iobase[5] + VND_TF2_CH3) | ATA_PCI_CTL_OFS;
798 port[3].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH3;
802 printf ("Tried to scan unknown port: ata%d\n", dev);
806 /* Initialize other registers */
807 sata_port (&port[dev].ioaddr);
809 /* Check for attached device */
810 if (!sata_bus_probe (dev)) {
811 port[dev].port_state = 0;
812 debug ("SATA#%d port is not present\n", dev);
814 debug ("SATA#%d port is present\n", dev);
815 if (sata_bus_softreset (dev)) {
816 /* soft reset failed, try a hard one */
817 sata_phy_reset (dev);
818 if (sata_bus_softreset (dev)) {
819 port[dev].port_state = 0;
821 port[dev].port_state = 1;
824 port[dev].port_state = 1;
827 if (port[dev].port_state == 1) {
828 /* Probe device and set xfer mode */
829 sata_identify (dev, 0);
830 set_Feature_cmd (dev, 0);