From 66d9dbec1cc27d6398ee6cf84639dbe14971251e Mon Sep 17 00:00:00 2001 From: mushtaq khan Date: Fri, 20 Apr 2007 14:23:02 +0530 Subject: Add driver for S-ATA-controller on Intel processors with South Bridge, ICH-5, ICH-6 and ICH-7. Implementation: 1. Code is divided in to two files. All functions, which are controller specific are kept in "drivers/ata_piix.c" file and functions, which are not controller specific, are kept in "common/cmd_sata.c" file. 2. Reading and Writing from the S-ATA drive is done using PIO method. 3. Driver can be configured for 48-bit addressing by defining macro CONFIG_LBA48, if this macro is not defined driver uses the 28-bit addressing. 4. S-ATA read function is hooked to the File system, commands like ext2ls and ext2load file can be used. This has been tested. 5. U-Boot command "SATA_init" is added, which initializes the S-ATA controller and identifies the S-ATA drives connected to it. 6. U-Boot command "sata" is added, which is used to read/write, print partition table and get info about the drives present. This I have implemented in same way as "ide" command is implemented in U-Boot. 7. This driver is for S-ATA in native mode. 8. This driver does not support the Native command queuing and Hot-plugging. Signed-off-by: Mushtaq Khan --- common/cmd_sata.c | 710 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 710 insertions(+) create mode 100644 common/cmd_sata.c (limited to 'common/cmd_sata.c') diff --git a/common/cmd_sata.c b/common/cmd_sata.c new file mode 100644 index 0000000000..1c71b6471d --- /dev/null +++ b/common/cmd_sata.c @@ -0,0 +1,710 @@ +/* + * Copyright (C) Procsys. All rights reserved. + * Author: Mushtaq Khan + + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * with the reference to libata in kernel 2.4.32 + * +*/ + +/*File contains SATA read-write and other utility functions.*/ +#include +#include +#include +#include +#include +#include +#include + +#ifdef CFG_SATA_SUPPORTED +/*For debug prints set macro DEBUG_SATA to 1 */ +#define DEBUG_SATA 0 +/*Macro for SATA library specific declarations */ +#define SATA_DECL +#include +#undef SATA_DECL + +static u8 __inline__ +sata_inb (unsigned long ioaddr) +{ + return inb (ioaddr); +} + +static void __inline__ +sata_outb (unsigned char val, unsigned long ioaddr) +{ + outb (val, ioaddr); +} + +static void +output_data (struct sata_ioports *ioaddr, ulong * sect_buf, int words) +{ + outsw (ioaddr->data_addr, sect_buf, words << 1); +} + +static int +input_data (struct sata_ioports *ioaddr, ulong * sect_buf, int words) +{ + insw (ioaddr->data_addr, sect_buf, words << 1); + return 0; +} + +static void +sata_cpy (unsigned char *dst, unsigned char *src, unsigned int len) +{ + unsigned char *end, *last; + + last = dst; + end = src + len - 1; + + /* reserve space for '\0' */ + if (len < 2) + goto OUT; + + /* skip leading white space */ + while ((*src) && (src < end) && (*src == ' ')) + ++src; + + /* copy string, omitting trailing white space */ + while ((*src) && (src < end)) { + *dst++ = *src; + if (*src++ != ' ') + last = dst; + } + OUT: + *last = '\0'; +} + +int +sata_bus_softreset (int num) +{ + u8 dev = 0, status = 0, i; + + port[num].dev_mask = 0; + + for (i = 0; i < CFG_SATA_DEVS_PER_BUS; i++) { + if (!(sata_devchk (&port[num].ioaddr, i))) { + PRINTF ("dev_chk failed for dev#%d\n", i); + } else { + port[num].dev_mask |= (1 << i); + PRINTF ("dev_chk passed for dev#%d\n", i); + } + } + + if (!(port[num].dev_mask)) { + printf ("no devices on port%d\n", num); + return 1; + } + + dev_select (&port[num].ioaddr, dev); + + port[num].ctl_reg = 0x08; /*Default value of control reg */ + sata_outb (port[num].ctl_reg, port[num].ioaddr.ctl_addr); + udelay (10); + sata_outb (port[num].ctl_reg | ATA_SRST, port[num].ioaddr.ctl_addr); + udelay (10); + sata_outb (port[num].ctl_reg, port[num].ioaddr.ctl_addr); + + /* spec mandates ">= 2ms" before checking status. + * We wait 150ms, because that was the magic delay used for + * ATAPI devices in Hale Landis's ATADRVR, for the period of time + * between when the ATA command register is written, and then + * status is checked. Because waiting for "a while" before + * checking status is fine, post SRST, we perform this magic + * delay here as well. + */ + msleep (150); + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 300); + while ((status & ATA_BUSY)) { + msleep (100); + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 3); + } + + if (status & ATA_BUSY) + printf ("ata%u is slow to respond,plz be patient\n", port); + + while ((status & ATA_BUSY)) { + msleep (100); + status = sata_chk_status (&port[num].ioaddr); + } + + if (status & ATA_BUSY) { + printf ("ata%u failed to respond : ", port); + printf ("bus reset failed\n"); + return 1; + } + return 0; +} + +void +sata_identify (int num, int dev) +{ + u8 cmd = 0, status = 0, devno = num * CFG_SATA_DEVS_PER_BUS + dev; + u16 iobuf[ATA_SECT_SIZE]; + u64 n_sectors = 0; + u8 mask = 0; + + memset (iobuf, 0, sizeof (iobuf)); + hd_driveid_t *iop = (hd_driveid_t *) iobuf; + + if (dev == 0) + mask = 0x01; + else + mask = 0x02; + + if (!(port[num].dev_mask & mask)) { + printf ("dev%d is not present on port#%d\n", dev, num); + return; + } + + printf ("port=%d dev=%d\n", num, dev); + + dev_select (&port[num].ioaddr, dev); + + status = 0; + cmd = ATA_CMD_IDENT; /*Device Identify Command */ + sata_outb (cmd, port[num].ioaddr.command_addr); + sata_inb (port[num].ioaddr.altstatus_addr); + udelay (10); + + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 1000); + if (status & ATA_ERR) { + printf ("\ndevice not responding\n"); + port[num].dev_mask &= ~mask; + return; + } + + input_data (&port[num].ioaddr, (ulong *) iobuf, ATA_SECTORWORDS); + + PRINTF ("\nata%u: dev %u cfg 49:%04x 82:%04x 83:%04x 84:%04x85:%04x" + "86:%04x" "87:%04x 88:%04x\n", num, dev, iobuf[49], + iobuf[82], iobuf[83], iobuf[84], iobuf[85], iobuf[86], + iobuf[87], iobuf[88]); + + /* we require LBA and DMA support (bits 8 & 9 of word 49) */ + if (!ata_id_has_dma (iobuf) || !ata_id_has_lba (iobuf)) { + PRINTF ("ata%u: no dma/lba\n", num); + } + ata_dump_id (iobuf); + + if (ata_id_has_lba48 (iobuf)) { + n_sectors = ata_id_u64 (iobuf, 100); + } else { + n_sectors = ata_id_u32 (iobuf, 60); + } + PRINTF ("no. of sectors %u\n", ata_id_u64 (iobuf, 100)); + PRINTF ("no. of sectors %u\n", ata_id_u32 (iobuf, 60)); + + if (n_sectors == 0) { + port[num].dev_mask &= ~mask; + return; + } + + sata_cpy (sata_dev_desc[devno].revision, iop->fw_rev, + sizeof (sata_dev_desc[devno].revision)); + sata_cpy (sata_dev_desc[devno].vendor, iop->model, + sizeof (sata_dev_desc[devno].vendor)); + sata_cpy (sata_dev_desc[devno].product, iop->serial_no, + sizeof (sata_dev_desc[devno].product)); + strswab (sata_dev_desc[devno].revision); + strswab (sata_dev_desc[devno].vendor); + + if ((iop->config & 0x0080) == 0x0080) { + sata_dev_desc[devno].removable = 1; + } else { + sata_dev_desc[devno].removable = 0; + } + + sata_dev_desc[devno].lba = iop->lba_capacity; + PRINTF ("lba=0x%x", sata_dev_desc[devno].lba); + +#ifdef CONFIG_LBA48 + if (iop->command_set_2 & 0x0400) { + sata_dev_desc[devno].lba48 = 1; + lba = (unsigned long long) iop->lba48_capacity[0] | + ((unsigned long long) iop->lba48_capacity[1] << 16) | + ((unsigned long long) iop->lba48_capacity[2] << 32) | + ((unsigned long long) iop->lba48_capacity[3] << 48); + } else { + sata_dev_desc[devno].lba48 = 0; + } +#endif + + /* assuming HD */ + sata_dev_desc[devno].type = DEV_TYPE_HARDDISK; + sata_dev_desc[devno].blksz = ATA_BLOCKSIZE; + sata_dev_desc[devno].lun = 0; /* just to fill something in... */ +} + +void +set_Feature_cmd (int num, int dev) +{ + u8 mask = 0x00, status = 0; + + if (dev == 0) + mask = 0x01; + else + mask = 0x02; + + if (!(port[num].dev_mask & mask)) { + PRINTF ("dev%d is not present on port#%d\n", dev, num); + return; + } + + dev_select (&port[num].ioaddr, dev); + + sata_outb (SETFEATURES_XFER, port[num].ioaddr.feature_addr); + sata_outb (XFER_PIO_4, port[num].ioaddr.nsect_addr); + sata_outb (0, port[num].ioaddr.lbal_addr); + sata_outb (0, port[num].ioaddr.lbam_addr); + sata_outb (0, port[num].ioaddr.lbah_addr); + + sata_outb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr); + sata_outb (ATA_CMD_SETF, port[num].ioaddr.command_addr); + + udelay (50); + msleep (150); + + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 5000); + if ((status & (ATA_STAT_BUSY | ATA_STAT_ERR))) { + printf ("Error : status 0x%02x\n", status); + port[num].dev_mask &= ~mask; + } +} + +void +sata_port (struct sata_ioports *ioport) +{ + ioport->data_addr = ioport->cmd_addr + ATA_REG_DATA; + ioport->error_addr = ioport->cmd_addr + ATA_REG_ERR; + ioport->feature_addr = ioport->cmd_addr + ATA_REG_FEATURE; + ioport->nsect_addr = ioport->cmd_addr + ATA_REG_NSECT; + ioport->lbal_addr = ioport->cmd_addr + ATA_REG_LBAL; + ioport->lbam_addr = ioport->cmd_addr + ATA_REG_LBAM; + ioport->lbah_addr = ioport->cmd_addr + ATA_REG_LBAH; + ioport->device_addr = ioport->cmd_addr + ATA_REG_DEVICE; + ioport->status_addr = ioport->cmd_addr + ATA_REG_STATUS; + ioport->command_addr = ioport->cmd_addr + ATA_REG_CMD; +} + +int +sata_devchk (struct sata_ioports *ioaddr, int dev) +{ + u8 nsect, lbal; + + dev_select (ioaddr, dev); + + sata_outb (0x55, ioaddr->nsect_addr); + sata_outb (0xaa, ioaddr->lbal_addr); + + sata_outb (0xaa, ioaddr->nsect_addr); + sata_outb (0x55, ioaddr->lbal_addr); + + sata_outb (0x55, ioaddr->nsect_addr); + sata_outb (0xaa, ioaddr->lbal_addr); + + nsect = sata_inb (ioaddr->nsect_addr); + lbal = sata_inb (ioaddr->lbal_addr); + + if ((nsect == 0x55) && (lbal == 0xaa)) + return 1; /* we found a device */ + else + return 0; /* nothing found */ +} + +void +dev_select (struct sata_ioports *ioaddr, int dev) +{ + u8 tmp = 0; + + if (dev == 0) + tmp = ATA_DEVICE_OBS; + else + tmp = ATA_DEVICE_OBS | ATA_DEV1; + + sata_outb (tmp, ioaddr->device_addr); + sata_inb (ioaddr->altstatus_addr); + udelay (5); +} + +u8 +sata_busy_wait (struct sata_ioports *ioaddr, int bits, unsigned int max) +{ + u8 status; + + do { + udelay (1000); + status = sata_chk_status (ioaddr); + max--; + } while ((status & bits) && (max > 0)); + + return status; +} + +u8 +sata_chk_status (struct sata_ioports * ioaddr) +{ + return sata_inb (ioaddr->status_addr); +} + +void +msleep (int count) +{ + int i; + + for (i = 0; i < count; i++) + udelay (1000); +} + +ulong +sata_read (int device, lbaint_t blknr, ulong blkcnt, ulong * buffer) +{ + ulong n = 0; + u8 dev = 0, num = 0, mask = 0, status = 0; + +#ifdef CONFIG_LBA48 + unsigned char lba48 = 0; + + if (blknr & 0x0000fffff0000000) { + if (!sata_dev_desc[devno].lba48) { + printf ("Drive doesn't support 48-bit addressing\n"); + return 0; + } + /* more than 28 bits used, use 48bit mode */ + lba48 = 1; + } +#endif + /*Port Number */ + num = device / CFG_SATA_DEVS_PER_BUS; + /*dev on the port */ + if (device >= CFG_SATA_DEVS_PER_BUS) + dev = device - CFG_SATA_DEVS_PER_BUS; + else + dev = device; + + if (dev == 0) + mask = 0x01; + else + mask = 0x02; + + if (!(port[num].dev_mask & mask)) { + printf ("dev%d is not present on port#%d\n", dev, num); + return 0; + } + + /* Select device */ + dev_select (&port[num].ioaddr, dev); + + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 500); + if (status & ATA_BUSY) { + printf ("ata%u failed to respond\n", port[num].port_no); + return n; + } + while (blkcnt-- > 0) { + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 500); + if (status & ATA_BUSY) { + printf ("ata%u failed to respond\n", 0); + return n; + } +#ifdef CONFIG_LBA48 + if (lba48) { + /* write high bits */ + sata_outb (0, port[num].ioaddr.nsect_addr); + sata_outb ((blknr >> 24) & 0xFF, + port[num].ioaddr.lbal_addr); + sata_outb ((blknr >> 32) & 0xFF, + port[num].ioaddr.lbam_addr); + sata_outb ((blknr >> 40) & 0xFF, + port[num].ioaddr.lbah_addr); + } +#endif + sata_outb (1, port[num].ioaddr.nsect_addr); + sata_outb (((blknr) >> 0) & 0xFF, + port[num].ioaddr.lbal_addr); + sata_outb ((blknr >> 8) & 0xFF, port[num].ioaddr.lbam_addr); + sata_outb ((blknr >> 16) & 0xFF, port[num].ioaddr.lbah_addr); + +#ifdef CONFIG_LBA48 + if (lba48) { + sata_outb (ATA_LBA, port[num].ioaddr.device_addr); + sata_outb (ATA_CMD_READ_EXT, + port[num].ioaddr.command_addr); + } else +#endif + { + sata_outb (ATA_LBA | ((blknr >> 24) & 0xF), + port[num].ioaddr.device_addr); + sata_outb (ATA_CMD_READ, + port[num].ioaddr.command_addr); + } + + msleep (50); + /*may take up to 4 sec */ + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 4000); + + if ((status & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) + != ATA_STAT_DRQ) { + u8 err = 0; + + printf ("Error no DRQ dev %d blk %ld: sts 0x%02x\n", + device, (ulong) blknr, status); + err = sata_inb (port[num].ioaddr.error_addr); + printf ("Error reg = 0x%x\n", err); + return (n); + } + input_data (&port[num].ioaddr, buffer, ATA_SECTORWORDS); + sata_inb (port[num].ioaddr.altstatus_addr); + udelay (50); + + ++n; + ++blknr; + buffer += ATA_SECTORWORDS; + } + return n; +} + +ulong +sata_write (int device, lbaint_t blknr, ulong blkcnt, ulong * buffer) +{ + ulong n = 0; + unsigned char status = 0, num = 0, dev = 0, mask = 0; + +#ifdef CONFIG_LBA48 + unsigned char lba48 = 0; + + if (blknr & 0x0000fffff0000000) { + if (!sata_dev_desc[devno].lba48) { + printf ("Drive doesn't support 48-bit addressing\n"); + return 0; + } + /* more than 28 bits used, use 48bit mode */ + lba48 = 1; + } +#endif + /*Port Number */ + num = device / CFG_SATA_DEVS_PER_BUS; + /*dev on the Port */ + if (device >= CFG_SATA_DEVS_PER_BUS) + dev = device - CFG_SATA_DEVS_PER_BUS; + else + dev = device; + + if (dev == 0) + mask = 0x01; + else + mask = 0x02; + + /* Select device */ + dev_select (&port[num].ioaddr, dev); + + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 500); + if (status & ATA_BUSY) { + printf ("ata%u failed to respond\n", port[num].port_no); + return n; + } + + while (blkcnt-- > 0) { + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 500); + if (status & ATA_BUSY) { + printf ("ata%u failed to respond\n", + port[num].port_no); + return n; + } +#ifdef CONFIG_LBA48 + if (lba48) { + /* write high bits */ + sata_outb (0, port[num].ioaddr.nsect_addr); + sata_outb ((blknr >> 24) & 0xFF, + port[num].ioaddr.lbal_addr); + sata_outb ((blknr >> 32) & 0xFF, + port[num].ioaddr.lbam_addr); + sata_outb ((blknr >> 40) & 0xFF, + port[num].ioaddr.lbah_addr); + } +#endif + sata_outb (1, port[num].ioaddr.nsect_addr); + sata_outb ((blknr >> 0) & 0xFF, port[num].ioaddr.lbal_addr); + sata_outb ((blknr >> 8) & 0xFF, port[num].ioaddr.lbam_addr); + sata_outb ((blknr >> 16) & 0xFF, port[num].ioaddr.lbah_addr); +#ifdef CONFIG_LBA48 + if (lba48) { + sata_outb (ATA_LBA, port[num].ioaddr.device_addr); + sata_outb (ATA_CMD_WRITE_EXT, + port[num].ioaddr.command_addr); + } else +#endif + { + sata_outb (ATA_LBA | ((blknr >> 24) & 0xF), + port[num].ioaddr.device_addr); + sata_outb (ATA_CMD_WRITE, + port[num].ioaddr.command_addr); + } + + msleep (50); + /*may take up to 4 sec */ + status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 4000); + if ((status & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) + != ATA_STAT_DRQ) { + printf ("Error no DRQ dev %d blk %ld: sts 0x%02x\n", + device, (ulong) blknr, status); + return (n); + } + + output_data (&port[num].ioaddr, buffer, ATA_SECTORWORDS); + sata_inb (port[num].ioaddr.altstatus_addr); + udelay (50); + + ++n; + ++blknr; + buffer += ATA_SECTORWORDS; + } + return n; +} + +block_dev_desc_t *sata_get_dev (int dev); + +block_dev_desc_t * +sata_get_dev (int dev) +{ + return ((block_dev_desc_t *) & sata_dev_desc[dev]); +} + +int +do_sata (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +{ + + switch (argc) { + case 0: + case 1: + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + case 2: + if (strncmp (argv[1], "init", 4) == 0) { + int rcode = 0; + + rcode = init_sata (); + if (rcode) + printf ("Sata initialization Failed\n"); + return rcode; + } else if (strncmp (argv[1], "inf", 3) == 0) { + int i; + + putc ('\n'); + for (i = 0; i < CFG_SATA_MAXDEVICES; ++i) { + /*List only known devices */ + if (sata_dev_desc[i].type == + DEV_TYPE_UNKNOWN) + continue; + printf ("sata dev %d: ", i); + dev_print (&sata_dev_desc[i]); + } + return 0; + } + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + case 3: + if (strcmp (argv[1], "dev") == 0) { + int dev = (int) simple_strtoul (argv[2], NULL, 10); + + if (dev >= CFG_SATA_MAXDEVICES) { + printf ("\nSata dev %d not available\n", + dev); + return 1; + } + printf ("\nSATA dev %d: ", dev); + dev_print (&sata_dev_desc[dev]); + if (sata_dev_desc[dev].type == DEV_TYPE_UNKNOWN) + return 1; + curr_dev = dev; + return 0; + } else if (strcmp (argv[1], "part") == 0) { + int dev = (int) simple_strtoul (argv[2], NULL, 10); + + if (dev >= CFG_SATA_MAXDEVICES) { + printf ("\nSata dev %d not available\n", + dev); + return 1; + } + PRINTF ("\nSATA dev %d: ", dev); + if (sata_dev_desc[dev].part_type != + PART_TYPE_UNKNOWN) { + print_part (&sata_dev_desc[dev]); + } else { + printf ("\nSata dev %d partition type " + "unknown\n", dev); + return 1; + } + return 0; + } + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + default: + if (argc < 5) { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + if (strcmp (argv[1], "read") == 0) { + ulong addr = simple_strtoul (argv[2], NULL, 16); + ulong cnt = simple_strtoul (argv[4], NULL, 16); + ulong n; + lbaint_t blk = simple_strtoul (argv[3], NULL, 16); + + memset ((int *) addr, 0, cnt * 512); + printf ("\nSATA read: dev %d blk # %ld," + "count %ld ... ", curr_dev, blk, cnt); + n = sata_read (curr_dev, blk, cnt, (ulong *) addr); + /* flush cache after read */ + flush_cache (addr, cnt * 512); + printf ("%ld blocks read: %s\n", n, + (n == cnt) ? "OK" : "ERR"); + if (n == cnt) + return 1; + else + return 0; + } else if (strcmp (argv[1], "write") == 0) { + ulong addr = simple_strtoul (argv[2], NULL, 16); + ulong cnt = simple_strtoul (argv[4], NULL, 16); + ulong n; + lbaint_t blk = simple_strtoul (argv[3], NULL, 16); + + printf ("\nSata write: dev %d blk # %ld," + "count %ld ... ", curr_dev, blk, cnt); + n = sata_write (curr_dev, blk, cnt, (ulong *) addr); + printf ("%ld blocks written: %s\n", n, + (n == cnt) ? "OK" : "ERR"); + if (n == cnt) + return 1; + else + return 0; + } else { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + } /*End OF SWITCH */ +} + +U_BOOT_CMD (sata, 5, 1, do_sata, + "sata init\n" + "sata info\n" + "sata part device\n" + "sata dev device\n" + "sata read addr blk# cnt\n" + "sata write addr blk# cnt\n", "cmd for init,rw and dev-info\n"); + +#endif -- cgit