// Low level ATA disk access
//
-// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2002 MandrakeSoft S.A.
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "pci_regs.h" // PCI_INTERRUPT_LINE
#include "boot.h" // add_bcv_hd
#include "disk.h" // struct ata_s
-#include "atabits.h" // ATA_CB_STAT
-
-#define TIMEOUT 0
-#define BSY 1
-#define NOT_BSY 2
-#define NOT_BSY_DRQ 3
-#define NOT_BSY_NOT_DRQ 4
-#define NOT_BSY_RDY 5
+#include "ata.h" // ATA_CB_STAT
#define IDE_SECTOR_SIZE 512
#define CDROM_SECTOR_SIZE 2048
#define IDE_TIMEOUT 32000 //32 seconds max for IDE ops
-struct ata_s ATA VAR16_32;
+struct ata_channel_s ATA_channels[CONFIG_MAX_ATA_INTERFACES] VAR16VISIBLE;
/****************************************************************
}
// Reset a drive
-void
+static void
ata_reset(int driveid)
{
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
- u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+ u8 ataid = GET_GLOBAL(Drives.drives[driveid].cntl_id);
+ u8 channel = ataid / 2;
+ u8 slave = ataid % 2;
+ u16 iobase1 = GET_GLOBAL(ATA_channels[channel].iobase1);
+ u16 iobase2 = GET_GLOBAL(ATA_channels[channel].iobase2);
dprintf(6, "ata_reset driveid=%d\n", driveid);
// Pulse SRST
u64 end = calc_future_tsc(IDE_TIMEOUT);
for (;;) {
outb(ATA_CB_DH_DEV1, iobase1 + ATA_CB_DH);
- status = await_not_bsy(iobase1);
+ status = ndelay_await_not_bsy(iobase1);
if (status < 0)
goto done;
if (inb(iobase1 + ATA_CB_DH) == ATA_CB_DH_DEV1)
goto done;
}
}
+ } else {
+ // QEMU doesn't reset dh on reset, so set it explicitly.
+ outb(ATA_CB_DH_DEV0, iobase1 + ATA_CB_DH);
}
// On a user-reset request, wait for RDY if it is an ATA device.
- u8 type=GET_GLOBAL(ATA.devices[driveid].type);
- if (type == ATA_TYPE_ATA)
+ u8 type=GET_GLOBAL(Drives.drives[driveid].type);
+ if (type == DTYPE_ATA)
status = await_rdy(iobase1);
done:
dprintf(6, "ata_reset exit status=%x\n", status);
}
+static int
+isready(int driveid)
+{
+ // Read the status from controller
+ u8 ataid = GET_GLOBAL(Drives.drives[driveid].cntl_id);
+ u8 channel = ataid / 2;
+ u16 iobase1 = GET_GLOBAL(ATA_channels[channel].iobase1);
+ u8 status = inb(iobase1 + ATA_CB_STAT);
+ if ((status & (ATA_CB_STAT_BSY|ATA_CB_STAT_RDY)) == ATA_CB_STAT_RDY)
+ return DISK_RET_SUCCESS;
+ return DISK_RET_ENOTREADY;
+}
+
+static int
+process_ata_misc_op(struct disk_op_s *op)
+{
+ if (!CONFIG_ATA)
+ return 0;
+
+ switch (op->command) {
+ case CMD_RESET:
+ ata_reset(op->driveid);
+ return DISK_RET_SUCCESS;
+ case CMD_ISREADY:
+ return isready(op->driveid);
+ case CMD_FORMAT:
+ case CMD_VERIFY:
+ case CMD_SEEK:
+ return DISK_RET_SUCCESS;
+ default:
+ op->count = 0;
+ return DISK_RET_EPARAM;
+ }
+}
+
/****************************************************************
* ATA send command
static int
send_cmd(int driveid, struct ata_pio_command *cmd)
{
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
- u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+ u8 ataid = GET_GLOBAL(Drives.drives[driveid].cntl_id);
+ u8 channel = ataid / 2;
+ u8 slave = ataid % 2;
+ u16 iobase1 = GET_GLOBAL(ATA_channels[channel].iobase1);
+ u16 iobase2 = GET_GLOBAL(ATA_channels[channel].iobase2);
// Disable interrupts
outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
outb(newdh, iobase1 + ATA_CB_DH);
if ((olddh ^ newdh) & (1<<4)) {
// Was a device change - wait for device to become not busy.
- status = await_not_bsy(iobase1);
+ status = ndelay_await_not_bsy(iobase1);
if (status < 0)
return status;
}
* ATA transfers
****************************************************************/
-// Read and discard x number of bytes from an io channel.
-static void
-insx_discard(int iobase1, int bytes)
-{
- int count, i;
- if (CONFIG_ATA_PIO32) {
- count = bytes / 4;
- for (i=0; i<count; i++)
- inl(iobase1);
- } else {
- count = bytes / 2;
- for (i=0; i<count; i++)
- inw(iobase1);
- }
-}
-
-// Transfer 'count' blocks (of 'blocksize' bytes) to/from drive
-// 'driveid'. If 'skipfirst' or 'skiplast' is set then the first
-// and/or last block may be partially transferred. This function is
-// inlined because all the callers use different forms and because the
-// large number of parameters would consume a lot of stack space.
-static __always_inline int
-ata_transfer(int driveid, int iswrite, int count, int blocksize
- , int skipfirst, int skiplast, void *buf_fl)
+// Transfer 'op->count' blocks (of 'blocksize' bytes) to/from drive
+// 'op->driveid'.
+static int
+ata_transfer(struct disk_op_s *op, int iswrite, int blocksize)
{
- dprintf(16, "ata_transfer id=%d write=%d count=%d bs=%d"
- " skipf=%d skipl=%d buf=%p\n"
- , driveid, iswrite, count, blocksize
- , skipfirst, skiplast, buf_fl);
-
- // Reset count of transferred data
- SET_EBDA(sector_count, 0);
-
- u8 channel = driveid / 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
- u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
- int current = 0;
+ dprintf(16, "ata_transfer id=%d write=%d count=%d bs=%d buf=%p\n"
+ , op->driveid, iswrite, op->count, blocksize, op->buf_fl);
+
+ u8 ataid = GET_GLOBAL(Drives.drives[op->driveid].cntl_id);
+ u8 channel = ataid / 2;
+ u16 iobase1 = GET_GLOBAL(ATA_channels[channel].iobase1);
+ u16 iobase2 = GET_GLOBAL(ATA_channels[channel].iobase2);
+ int count = op->count;
+ void *buf_fl = op->buf_fl;
int status;
for (;;) {
- int bsize = blocksize;
- if (skipfirst && current == 0) {
- insx_discard(iobase1, skipfirst);
- bsize -= skipfirst;
- }
- if (skiplast && current == count-1)
- bsize -= skiplast;
-
if (iswrite) {
// Write data to controller
- dprintf(16, "Write sector id=%d dest=%p\n", driveid, buf_fl);
+ dprintf(16, "Write sector id=%d dest=%p\n", op->driveid, buf_fl);
if (CONFIG_ATA_PIO32)
- outsl_fl(iobase1, buf_fl, bsize / 4);
+ outsl_fl(iobase1, buf_fl, blocksize / 4);
else
- outsw_fl(iobase1, buf_fl, bsize / 2);
+ outsw_fl(iobase1, buf_fl, blocksize / 2);
} else {
// Read data from controller
- dprintf(16, "Read sector id=%d dest=%p\n", driveid, buf_fl);
+ dprintf(16, "Read sector id=%d dest=%p\n", op->driveid, buf_fl);
if (CONFIG_ATA_PIO32)
- insl_fl(iobase1, buf_fl, bsize / 4);
+ insl_fl(iobase1, buf_fl, blocksize / 4);
else
- insw_fl(iobase1, buf_fl, bsize / 2);
+ insw_fl(iobase1, buf_fl, blocksize / 2);
}
- buf_fl += bsize;
-
- if (skiplast && current == count-1)
- insx_discard(iobase1, skiplast);
+ buf_fl += blocksize;
status = pause_await_not_bsy(iobase1, iobase2);
- if (status < 0)
+ if (status < 0) {
// Error
+ op->count -= count;
return status;
+ }
- current++;
- SET_EBDA(sector_count, current);
- if (current == count)
+ count--;
+ if (!count)
break;
status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR);
if (status != ATA_CB_STAT_DRQ) {
dprintf(6, "ata_transfer : more sectors left (status %02x)\n"
, status);
+ op->count -= count;
return -6;
}
}
return 0;
}
-static noinline int
-ata_transfer_disk(const struct disk_op_s *op)
-{
- return ata_transfer(op->driveid, op->command == ATA_CMD_WRITE_SECTORS
- , op->count, IDE_SECTOR_SIZE, 0, 0, op->buf_fl);
-}
-
-static noinline int
-ata_transfer_cdrom(const struct disk_op_s *op)
-{
- return ata_transfer(op->driveid, 0, op->count, CDROM_SECTOR_SIZE
- , 0, 0, op->buf_fl);
-}
-
-static noinline int
-ata_transfer_cdemu(const struct disk_op_s *op, int before, int after)
-{
- int vcount = op->count * 4 - before - after;
- int ret = ata_transfer(op->driveid, 0, op->count, CDROM_SECTOR_SIZE
- , before*512, after*512, op->buf_fl);
- if (ret) {
- SET_EBDA(sector_count, 0);
- return ret;
- }
- SET_EBDA(sector_count, vcount);
- return 0;
-}
-
/****************************************************************
* ATA hard drive functions
****************************************************************/
+// Read/write count blocks from a harddrive.
static int
-send_cmd_disk(const struct disk_op_s *op)
+ata_cmd_data(struct disk_op_s *op, int iswrite, int command)
{
u64 lba = op->lba;
struct ata_pio_command cmd;
memset(&cmd, 0, sizeof(cmd));
- cmd.command = op->command;
+ cmd.command = command;
if (op->count >= (1<<8) || lba + op->count >= (1<<28)) {
cmd.sector_count2 = op->count >> 8;
cmd.lba_low2 = lba >> 24;
cmd.lba_high = lba >> 16;
cmd.device = ((lba >> 24) & 0xf) | ATA_CB_DH_LBA;
- return send_cmd(op->driveid, &cmd);
+ int ret = send_cmd(op->driveid, &cmd);
+ if (ret)
+ return ret;
+ return ata_transfer(op, iswrite, IDE_SECTOR_SIZE);
}
-// Read/write count blocks from a harddrive.
int
-ata_cmd_data(struct disk_op_s *op)
+process_ata_op(struct disk_op_s *op)
{
- int ret = send_cmd_disk(op);
+ if (!CONFIG_ATA)
+ return 0;
+
+ int ret;
+ switch (op->command) {
+ case CMD_READ:
+ ret = ata_cmd_data(op, 0, ATA_CMD_READ_SECTORS);
+ break;
+ case CMD_WRITE:
+ ret = ata_cmd_data(op, 1, ATA_CMD_WRITE_SECTORS);
+ break;
+ default:
+ return process_ata_misc_op(op);
+ }
if (ret)
- return ret;
- return ata_transfer_disk(op);
+ return DISK_RET_EBADTRACK;
+ return DISK_RET_SUCCESS;
}
static int
send_atapi_cmd(int driveid, u8 *cmdbuf, u8 cmdlen, u16 blocksize)
{
- u8 channel = driveid / 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
- u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+ u8 ataid = GET_GLOBAL(Drives.drives[driveid].cntl_id);
+ u8 channel = ataid / 2;
+ u16 iobase1 = GET_GLOBAL(ATA_channels[channel].iobase1);
+ u16 iobase2 = GET_GLOBAL(ATA_channels[channel].iobase2);
struct ata_pio_command cmd;
cmd.sector_count = 0;
return 0;
}
-// Low-level cdrom read atapi command transmit function.
-static int
-send_cmd_cdrom(const struct disk_op_s *op)
+// Read sectors from the cdrom.
+int
+cdrom_read(struct disk_op_s *op)
{
u8 atacmd[12];
memset(atacmd, 0, sizeof(atacmd));
-
atacmd[0]=0x28; // READ command
atacmd[7]=(op->count & 0xff00) >> 8; // Sectors
atacmd[8]=(op->count & 0x00ff);
atacmd[4]=(op->lba & 0x0000ff00) >> 8;
atacmd[5]=(op->lba & 0x000000ff);
- return send_atapi_cmd(op->driveid, atacmd, sizeof(atacmd)
- , CDROM_SECTOR_SIZE);
-}
-
-// Read sectors from the cdrom.
-int
-cdrom_read(struct disk_op_s *op)
-{
- int ret = send_cmd_cdrom(op);
+ int ret = send_atapi_cmd(op->driveid, atacmd, sizeof(atacmd)
+ , CDROM_SECTOR_SIZE);
if (ret)
return ret;
- return ata_transfer_cdrom(op);
+ return ata_transfer(op, 0, CDROM_SECTOR_SIZE);
}
-// Pretend the cdrom has 512 byte sectors (instead of 2048) and read
-// sectors.
int
-cdrom_read_512(struct disk_op_s *op)
+process_atapi_op(struct disk_op_s *op)
{
- u32 vlba = op->lba;
- u32 vcount = op->count;
- u32 lba = op->lba = vlba / 4;
- u32 velba = vlba + vcount - 1;
- u32 elba = velba / 4;
- op->count = elba - lba + 1;
- int before = vlba % 4;
- int after = 3 - (velba % 4);
-
- dprintf(16, "cdrom_read_512: id=%d vlba=%d vcount=%d buf=%p lba=%d elba=%d"
- " count=%d before=%d after=%d\n"
- , op->driveid, vlba, vcount, op->buf_fl, lba, elba
- , op->count, before, after);
-
- int ret = send_cmd_cdrom(op);
+ int ret;
+ switch (op->command) {
+ case CMD_READ:
+ ret = cdrom_read(op);
+ break;
+ case CMD_FORMAT:
+ case CMD_WRITE:
+ return DISK_RET_EWRITEPROTECT;
+ default:
+ return process_ata_misc_op(op);
+ }
if (ret)
- return ret;
-
- return ata_transfer_cdemu(op, before, after);
+ return DISK_RET_EBADTRACK;
+ return DISK_RET_SUCCESS;
}
// Send a simple atapi command to a drive.
if (ret)
return ret;
- return ata_transfer(driveid, 0, 1, length, 0, 0, buf_fl);
+ struct disk_op_s dop;
+ memset(&dop, 0, sizeof(dop));
+ dop.driveid = driveid;
+ dop.count = 1;
+ dop.buf_fl = buf_fl;
+
+ return ata_transfer(&dop, 0, length);
}
/****************************************************************
- * Disk geometry translation
+ * ATA detect and init
****************************************************************/
-static u8
-get_translation(int driveid)
-{
- if (! CONFIG_COREBOOT) {
- // Emulators pass in the translation info via nvram.
- u8 channel = driveid / 2;
- u8 translation = inb_cmos(CMOS_BIOS_DISKTRANSFLAG + channel/2);
- translation >>= 2 * (driveid % 4);
- translation &= 0x03;
- return translation;
- }
-
- // On COREBOOT, use a heuristic to determine translation type.
- u16 heads = GET_GLOBAL(ATA.devices[driveid].pchs.heads);
- u16 cylinders = GET_GLOBAL(ATA.devices[driveid].pchs.cylinders);
- u16 spt = GET_GLOBAL(ATA.devices[driveid].pchs.spt);
-
- if (cylinders <= 1024 && heads <= 16 && spt <= 63)
- return ATA_TRANSLATION_NONE;
- if (cylinders * heads <= 131072)
- return ATA_TRANSLATION_LARGE;
- return ATA_TRANSLATION_LBA;
-}
-
-static void
-setup_translation(int driveid)
+// Extract the ATA/ATAPI version info.
+static int
+extract_version(u16 *buffer)
{
- u8 translation = get_translation(driveid);
- SET_GLOBAL(ATA.devices[driveid].translation, translation);
-
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- u16 heads = GET_GLOBAL(ATA.devices[driveid].pchs.heads);
- u16 cylinders = GET_GLOBAL(ATA.devices[driveid].pchs.cylinders);
- u16 spt = GET_GLOBAL(ATA.devices[driveid].pchs.spt);
- u64 sectors = GET_GLOBAL(ATA.devices[driveid].sectors);
-
- dprintf(1, "ata%d-%d: PCHS=%u/%d/%d translation="
- , channel, slave, cylinders, heads, spt);
- switch (translation) {
- case ATA_TRANSLATION_NONE:
- dprintf(1, "none");
- break;
- case ATA_TRANSLATION_LBA:
- dprintf(1, "lba");
- spt = 63;
- if (sectors > 63*255*1024) {
- heads = 255;
- cylinders = 1024;
+ // Extract ATA/ATAPI version.
+ u16 ataversion = buffer[80];
+ u8 version;
+ for (version=15; version>0; version--)
+ if (ataversion & (1<<version))
break;
- }
- u32 sect = (u32)sectors / 63;
- heads = sect / 1024;
- if (heads>128)
- heads = 255;
- else if (heads>64)
- heads = 128;
- else if (heads>32)
- heads = 64;
- else if (heads>16)
- heads = 32;
- else
- heads = 16;
- cylinders = sect / heads;
- break;
- case ATA_TRANSLATION_RECHS:
- dprintf(1, "r-echs");
- // Take care not to overflow
- if (heads==16) {
- if (cylinders>61439)
- cylinders=61439;
- heads=15;
- cylinders = (u16)((u32)(cylinders)*16/15);
- }
- // then go through the large bitshift process
- case ATA_TRANSLATION_LARGE:
- if (translation == ATA_TRANSLATION_LARGE)
- dprintf(1, "large");
- while (cylinders > 1024) {
- cylinders >>= 1;
- heads <<= 1;
-
- // If we max out the head count
- if (heads > 127)
- break;
- }
- break;
- }
- // clip to 1024 cylinders in lchs
- if (cylinders > 1024)
- cylinders = 1024;
- dprintf(1, " LCHS=%d/%d/%d\n", cylinders, heads, spt);
-
- SET_GLOBAL(ATA.devices[driveid].lchs.heads, heads);
- SET_GLOBAL(ATA.devices[driveid].lchs.cylinders, cylinders);
- SET_GLOBAL(ATA.devices[driveid].lchs.spt, spt);
+ return version;
}
-
-/****************************************************************
- * ATA detect and init
- ****************************************************************/
-
// Extract common information from IDENTIFY commands.
static void
extract_identify(int driveid, u16 *buffer)
dprintf(3, "Identify w0=%x w2=%x\n", buffer[0], buffer[2]);
// Read model name
- char *model = ATA.devices[driveid].model;
- int maxsize = ARRAY_SIZE(ATA.devices[driveid].model);
+ char *model = Drives.drives[driveid].model;
+ int maxsize = ARRAY_SIZE(Drives.drives[driveid].model);
int i;
for (i=0; i<maxsize/2; i++) {
u16 v = buffer[27+i];
for (i=maxsize-2; i>0 && model[i] == 0x20; i--)
model[i] = 0x00;
- // Extract ATA/ATAPI version.
- u16 ataversion = buffer[80];
- u8 version;
- for (version=15; version>0; version--)
- if (ataversion & (1<<version))
- break;
- ATA.devices[driveid].version = version;
-
// Common flags.
- SET_GLOBAL(ATA.devices[driveid].removable, (buffer[0] & 0x80) ? 1 : 0);
+ SET_GLOBAL(Drives.drives[driveid].removable, (buffer[0] & 0x80) ? 1 : 0);
}
static int
-init_drive_atapi(int driveid)
+init_drive_atapi(int driveid, u16 *buffer)
{
// Send an IDENTIFY_DEVICE_PACKET command to device
- u16 buffer[256];
- memset(buffer, 0, sizeof(buffer));
+ memset(buffer, 0, IDE_SECTOR_SIZE);
struct disk_op_s dop;
+ memset(&dop, 0, sizeof(dop));
dop.driveid = driveid;
- dop.command = ATA_CMD_IDENTIFY_DEVICE_PACKET;
dop.count = 1;
dop.lba = 1;
dop.buf_fl = MAKE_FLATPTR(GET_SEG(SS), buffer);
- int ret = ata_cmd_data(&dop);
+ int ret = ata_cmd_data(&dop, 0, ATA_CMD_IDENTIFY_DEVICE_PACKET);
if (ret)
return ret;
// Success - setup as ATAPI.
extract_identify(driveid, buffer);
- SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATAPI);
- SET_GLOBAL(ATA.devices[driveid].device, (buffer[0] >> 8) & 0x1f);
- SET_GLOBAL(ATA.devices[driveid].blksize, CDROM_SECTOR_SIZE);
-
- // fill cdidmap
- u8 cdcount = GET_GLOBAL(ATA.cdcount);
- SET_GLOBAL(ATA.idmap[1][cdcount], driveid);
- SET_GLOBAL(ATA.cdcount, cdcount+1);
+ SET_GLOBAL(Drives.drives[driveid].type, DTYPE_ATAPI);
+ SET_GLOBAL(Drives.drives[driveid].blksize, CDROM_SECTOR_SIZE);
+ SET_GLOBAL(Drives.drives[driveid].sectors, (u64)-1);
+ u8 iscd = ((buffer[0] >> 8) & 0x1f) == 0x05;
// Report drive info to user.
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
+ u8 ataid = GET_GLOBAL(Drives.drives[driveid].cntl_id);
+ u8 channel = ataid / 2;
+ u8 slave = ataid % 2;
printf("ata%d-%d: %s ATAPI-%d %s\n", channel, slave
- , ATA.devices[driveid].model, ATA.devices[driveid].version
- , (ATA.devices[driveid].device == ATA_DEVICE_CDROM
- ? "CD-Rom/DVD-Rom" : "Device"));
+ , Drives.drives[driveid].model, extract_version(buffer)
+ , (iscd ? "CD-Rom/DVD-Rom" : "Device"));
+
+ // fill cdidmap
+ if (iscd)
+ map_cd_drive(driveid);
return 0;
}
static int
-init_drive_ata(int driveid)
+init_drive_ata(int driveid, u16 *buffer)
{
// Send an IDENTIFY_DEVICE command to device
- u16 buffer[256];
- memset(buffer, 0, sizeof(buffer));
+ memset(buffer, 0, IDE_SECTOR_SIZE);
struct disk_op_s dop;
+ memset(&dop, 0, sizeof(dop));
dop.driveid = driveid;
- dop.command = ATA_CMD_IDENTIFY_DEVICE;
dop.count = 1;
dop.lba = 1;
dop.buf_fl = MAKE_FLATPTR(GET_SEG(SS), buffer);
- int ret = ata_cmd_data(&dop);
+ int ret = ata_cmd_data(&dop, 0, ATA_CMD_IDENTIFY_DEVICE);
if (ret)
return ret;
// Success - setup as ATA.
extract_identify(driveid, buffer);
- SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATA);
- SET_GLOBAL(ATA.devices[driveid].device, ATA_DEVICE_HD);
- SET_GLOBAL(ATA.devices[driveid].blksize, IDE_SECTOR_SIZE);
+ SET_GLOBAL(Drives.drives[driveid].type, DTYPE_ATA);
+ SET_GLOBAL(Drives.drives[driveid].blksize, IDE_SECTOR_SIZE);
- SET_GLOBAL(ATA.devices[driveid].pchs.cylinders, buffer[1]);
- SET_GLOBAL(ATA.devices[driveid].pchs.heads, buffer[3]);
- SET_GLOBAL(ATA.devices[driveid].pchs.spt, buffer[6]);
+ SET_GLOBAL(Drives.drives[driveid].pchs.cylinders, buffer[1]);
+ SET_GLOBAL(Drives.drives[driveid].pchs.heads, buffer[3]);
+ SET_GLOBAL(Drives.drives[driveid].pchs.spt, buffer[6]);
u64 sectors;
if (buffer[83] & (1 << 10)) // word 83 - lba48 support
sectors = *(u64*)&buffer[100]; // word 100-103
else
sectors = *(u32*)&buffer[60]; // word 60 and word 61
- SET_GLOBAL(ATA.devices[driveid].sectors, sectors);
+ SET_GLOBAL(Drives.drives[driveid].sectors, sectors);
// Setup disk geometry translation.
setup_translation(driveid);
// Report drive info to user.
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- char *model = ATA.devices[driveid].model;
+ u8 ataid = GET_GLOBAL(Drives.drives[driveid].cntl_id);
+ u8 channel = ataid / 2;
+ u8 slave = ataid % 2;
+ char *model = Drives.drives[driveid].model;
printf("ata%d-%d: %s ATA-%d Hard-Disk ", channel, slave, model
- , ATA.devices[driveid].version);
+ , extract_version(buffer));
u64 sizeinmb = sectors >> 11;
if (sizeinmb < (1 << 16))
printf("(%u MiBytes)\n", (u32)sizeinmb);
{
// Device detection
u64 end = calc_future_tsc(IDE_TIMEOUT);
- int driveid, last_reset_driveid=-1;
- for(driveid=0; driveid<CONFIG_MAX_ATA_DEVICES; driveid++) {
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
+ int ataid, last_reset_ataid=-1;
+ for (ataid=0; ataid<CONFIG_MAX_ATA_INTERFACES*2; ataid++) {
+ u8 channel = ataid / 2;
+ u8 slave = ataid % 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
+ u16 iobase1 = GET_GLOBAL(ATA_channels[channel].iobase1);
if (!iobase1)
break;
continue;
u8 newdh = slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0;
outb(newdh, iobase1+ATA_CB_DH);
+ ndelay(400);
status = powerup_await_non_bsy(iobase1, end);
if (status < 0)
continue;
outb(0xaa, iobase1+ATA_CB_SN);
u8 sc = inb(iobase1+ATA_CB_SC);
u8 sn = inb(iobase1+ATA_CB_SN);
- dprintf(6, "ata_detect drive=%d sc=%x sn=%x dh=%x\n"
- , driveid, sc, sn, dh);
+ dprintf(6, "ata_detect ataid=%d sc=%x sn=%x dh=%x\n"
+ , ataid, sc, sn, dh);
if (sc != 0x55 || sn != 0xaa || dh != newdh)
continue;
+ // Prepare new driveid.
+ u8 driveid = GET_GLOBAL(Drives.drivecount);
+ if (driveid >= ARRAY_SIZE(Drives.drives))
+ break;
+ memset(&Drives.drives[driveid], 0, sizeof(Drives.drives[0]));
+ Drives.drives[driveid].cntl_id = ataid;
+
// reset the channel
- if (slave && driveid == last_reset_driveid + 1) {
+ if (slave && ataid == last_reset_ataid + 1) {
// The drive was just reset - no need to reset it again.
} else {
ata_reset(driveid);
- last_reset_driveid = driveid;
+ last_reset_ataid = ataid;
}
// check for ATAPI
- int ret = init_drive_atapi(driveid);
- if (!ret)
+ u16 buffer[256];
+ int ret = init_drive_atapi(driveid, buffer);
+ if (!ret) {
// Found an ATAPI drive.
- continue;
-
- u8 st = inb(iobase1+ATA_CB_STAT);
- if (!st)
- // Status not set - can't be a valid drive.
- continue;
-
- // Wait for RDY.
- ret = await_rdy(iobase1);
- if (ret < 0)
- continue;
-
- // check for ATA.
- init_drive_ata(driveid);
+ } else {
+ u8 st = inb(iobase1+ATA_CB_STAT);
+ if (!st)
+ // Status not set - can't be a valid drive.
+ continue;
+
+ // Wait for RDY.
+ ret = await_rdy(iobase1);
+ if (ret < 0)
+ continue;
+
+ // check for ATA.
+ ret = init_drive_ata(driveid, buffer);
+ if (ret)
+ // No ATA drive found
+ continue;
+ }
+ SET_GLOBAL(Drives.drivecount, driveid+1);
+
+ u16 resetresult = buffer[93];
+ dprintf(6, "ata_detect resetresult=%04x\n", resetresult);
+ if (!slave && (resetresult & 0xdf61) == 0x4041)
+ // resetresult looks valid and device 0 is responding to
+ // device 1 requests - device 1 must not be present - skip
+ // detection.
+ ataid++;
}
printf("\n");
static void
ata_init()
{
- memset(&ATA, 0, sizeof(ATA));
-
- // hdidmap and cdidmap init.
- u8 device;
- for (device=0; device < CONFIG_MAX_ATA_DEVICES; device++) {
- SET_GLOBAL(ATA.idmap[0][device], CONFIG_MAX_ATA_DEVICES);
- SET_GLOBAL(ATA.idmap[1][device], CONFIG_MAX_ATA_DEVICES);
- }
-
// Scan PCI bus for ATA adapters
int count=0;
int bdf, max;
foreachpci(bdf, max) {
if (pci_config_readw(bdf, PCI_CLASS_DEVICE) != PCI_CLASS_STORAGE_IDE)
continue;
- if (count >= ARRAY_SIZE(ATA.channels))
+ if (count >= ARRAY_SIZE(ATA_channels))
break;
u8 irq = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
- SET_GLOBAL(ATA.channels[count].irq, irq);
- SET_GLOBAL(ATA.channels[count].pci_bdf, bdf);
+ SET_GLOBAL(ATA_channels[count].irq, irq);
+ SET_GLOBAL(ATA_channels[count].pci_bdf, bdf);
u8 prog_if = pci_config_readb(bdf, PCI_CLASS_PROG);
u32 port1, port2;
port1 = 0x1f0;
port2 = 0x3f0;
}
- SET_GLOBAL(ATA.channels[count].iobase1, port1);
- SET_GLOBAL(ATA.channels[count].iobase2, port2);
+ SET_GLOBAL(ATA_channels[count].iobase1, port1);
+ SET_GLOBAL(ATA_channels[count].iobase2, port2);
dprintf(1, "ATA controller %d at %x/%x (dev %x prog_if %x)\n"
, count, port1, port2, bdf, prog_if);
count++;
}
dprintf(1, "ATA controller %d at %x/%x (dev %x prog_if %x)\n"
, count, port1, port2, bdf, prog_if);
- SET_GLOBAL(ATA.channels[count].iobase1, port1);
- SET_GLOBAL(ATA.channels[count].iobase2, port2);
+ SET_GLOBAL(ATA_channels[count].iobase1, port1);
+ SET_GLOBAL(ATA_channels[count].iobase2, port2);
count++;
}
}
void
-hard_drive_setup()
+ata_setup()
{
if (!CONFIG_ATA)
return;
enable_hwirq(14, entry_76);
}
-
-
-/****************************************************************
- * Drive mapping
- ****************************************************************/
-
-// Fill in Fixed Disk Parameter Table (located in ebda).
-static void
-fill_fdpt(int driveid)
-{
- if (driveid > 1)
- return;
-
- u16 nlc = GET_GLOBAL(ATA.devices[driveid].lchs.cylinders);
- u16 nlh = GET_GLOBAL(ATA.devices[driveid].lchs.heads);
- u16 nlspt = GET_GLOBAL(ATA.devices[driveid].lchs.spt);
-
- u16 npc = GET_GLOBAL(ATA.devices[driveid].pchs.cylinders);
- u16 nph = GET_GLOBAL(ATA.devices[driveid].pchs.heads);
- u16 npspt = GET_GLOBAL(ATA.devices[driveid].pchs.spt);
-
- struct fdpt_s *fdpt = &get_ebda_ptr()->fdpt[driveid];
- fdpt->precompensation = 0xffff;
- fdpt->drive_control_byte = 0xc0 | ((nph > 8) << 3);
- fdpt->landing_zone = npc;
- fdpt->cylinders = nlc;
- fdpt->heads = nlh;
- fdpt->sectors = nlspt;
-
- if (nlc == npc && nlh == nph && nlspt == npspt)
- // no logical CHS mapping used, just physical CHS
- // use Standard Fixed Disk Parameter Table (FDPT)
- return;
-
- // complies with Phoenix style Translated Fixed Disk Parameter
- // Table (FDPT)
- fdpt->phys_cylinders = npc;
- fdpt->phys_heads = nph;
- fdpt->phys_sectors = npspt;
- fdpt->a0h_signature = 0xa0;
-
- // Checksum structure.
- u8 sum = checksum(fdpt, sizeof(*fdpt)-1);
- fdpt->checksum = -sum;
-}
-
-// Map a drive (that was registered via add_bcv_hd)
-void
-map_drive(int driveid)
-{
- // fill hdidmap
- u8 hdcount = GET_BDA(hdcount);
- dprintf(3, "Mapping driveid %d to %d\n", driveid, hdcount);
- SET_GLOBAL(ATA.idmap[0][hdcount], driveid);
- SET_BDA(hdcount, hdcount + 1);
-
- // Fill "fdpt" structure.
- fill_fdpt(hdcount);
-}
projects / seabios.git / blobdiff