// 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 GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
-#include "ata.h" // ATA_*
#include "types.h" // u8
#include "ioport.h" // inb
#include "util.h" // dprintf
#include "cmos.h" // inb_cmos
#include "pic.h" // enable_hwirq
#include "biosvar.h" // GET_EBDA
-#include "pci.h" // pci_find_class
+#include "pci.h" // foreachpci
#include "pci_ids.h" // PCI_CLASS_STORAGE_OTHER
#include "pci_regs.h" // PCI_INTERRUPT_LINE
+#include "boot.h" // boot_add_hd
#include "disk.h" // struct ata_s
+#include "ata.h" // ATA_CB_STAT
+#include "blockcmd.h" // CDB_CMD_READ_10
-#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
-
-#define IDE_SECTOR_SIZE 512
-#define CDROM_SECTOR_SIZE 2048
-
-#define IDE_TIMEOUT 32000u //32 seconds max for IDE ops
-
-struct ata_s ATA VAR16_32;
+#define IDE_TIMEOUT 32000 //32 seconds max for IDE ops
/****************************************************************
****************************************************************/
// Wait for the specified ide state
-static int
-await_ide(u8 when_done, u16 base, u16 timeout)
+static inline int
+await_ide(u8 mask, u8 flags, u16 base, u16 timeout)
{
u64 end = calc_future_tsc(timeout);
for (;;) {
u8 status = inb(base+ATA_CB_STAT);
- u8 result = 0;
- if (when_done == BSY)
- result = status & ATA_CB_STAT_BSY;
- else if (when_done == NOT_BSY)
- result = !(status & ATA_CB_STAT_BSY);
- else if (when_done == NOT_BSY_DRQ)
- result = !(status & ATA_CB_STAT_BSY) && (status & ATA_CB_STAT_DRQ);
- else if (when_done == NOT_BSY_NOT_DRQ)
- result = !(status & ATA_CB_STAT_BSY) && !(status & ATA_CB_STAT_DRQ);
- else if (when_done == NOT_BSY_RDY)
- result = !(status & ATA_CB_STAT_BSY) && (status & ATA_CB_STAT_RDY);
-
- if (result)
+ if ((status & mask) == flags)
return status;
- if (status & ATA_CB_STAT_ERR) {
- dprintf(1, "await_ide: ERROR (TIMEOUT,BSY,!BSY,!BSY_DRQ"
- ",!BSY_!DRQ,!BSY_RDY) %d status=%x timeout=%d\n"
- , when_done, status, timeout);
+ if (check_tsc(end)) {
+ warn_timeout();
return -1;
}
- if (rdtscll() >= end)
- break;
+ yield();
}
- dprintf(1, "IDE time out\n");
- return -2;
+}
+
+// Wait for the device to be not-busy.
+static int
+await_not_bsy(u16 base)
+{
+ return await_ide(ATA_CB_STAT_BSY, 0, base, IDE_TIMEOUT);
+}
+
+// Wait for the device to be ready.
+static int
+await_rdy(u16 base)
+{
+ return await_ide(ATA_CB_STAT_RDY, ATA_CB_STAT_RDY, base, IDE_TIMEOUT);
}
// Wait for ide state - pauses for one ata cycle first.
-static __always_inline int
-pause_await_ide(u8 when_done, u16 iobase1, u16 iobase2, u16 timeout)
+static inline int
+pause_await_not_bsy(u16 iobase1, u16 iobase2)
{
// Wait one PIO transfer cycle.
inb(iobase2 + ATA_CB_ASTAT);
- return await_ide(when_done, iobase1, timeout);
+ return await_not_bsy(iobase1);
}
// Wait for ide state - pause for 400ns first.
-static __always_inline int
-ndelay_await_ide(u8 when_done, u16 iobase1, u16 timeout)
+static inline int
+ndelay_await_not_bsy(u16 iobase1)
{
ndelay(400);
- return await_ide(when_done, iobase1, timeout);
+ return await_not_bsy(iobase1);
}
// Reset a drive
-void
-ata_reset(int driveid)
+static void
+ata_reset(struct atadrive_s *adrive_g)
{
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
- u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u8 slave = GET_GLOBAL(adrive_g->slave);
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
+ u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2);
- // Reset
-
- // 8.2.1 (a) -- set SRST in DC
+ dprintf(6, "ata_reset drive=%p\n", &adrive_g->drive);
+ // Pulse SRST
outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN | ATA_CB_DC_SRST, iobase2+ATA_CB_DC);
-
- // 8.2.1 (b) -- wait for BSY
- int status = await_ide(BSY, iobase1, 20);
- dprintf(6, "ata_reset(1) status=%x\n", status);
-
- // 8.2.1 (f) -- clear SRST
+ udelay(5);
outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2+ATA_CB_DC);
+ msleep(2);
- // 8.2.1 (g) -- check for sc==sn==0x01
- // select device
- outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1+ATA_CB_DH);
- mdelay(50);
- u8 sc = inb(iobase1+ATA_CB_SC);
- u8 sn = inb(iobase1+ATA_CB_SN);
-
- // For predetermined ATA drives - wait for ready.
- if (sc==0x01 && sn==0x01) {
- u8 type=GET_GLOBAL(ATA.devices[driveid].type);
- if (type == ATA_TYPE_ATA)
- await_ide(NOT_BSY_RDY, iobase1, IDE_TIMEOUT);
+ // wait for device to become not busy.
+ int status = await_not_bsy(iobase1);
+ if (status < 0)
+ goto done;
+ if (slave) {
+ // Change device.
+ u64 end = calc_future_tsc(IDE_TIMEOUT);
+ for (;;) {
+ outb(ATA_CB_DH_DEV1, iobase1 + ATA_CB_DH);
+ status = ndelay_await_not_bsy(iobase1);
+ if (status < 0)
+ goto done;
+ if (inb(iobase1 + ATA_CB_DH) == ATA_CB_DH_DEV1)
+ break;
+ // Change drive request failed to take effect - retry.
+ if (check_tsc(end)) {
+ warn_timeout();
+ goto done;
+ }
+ }
+ } else {
+ // QEMU doesn't reset dh on reset, so set it explicitly.
+ outb(ATA_CB_DH_DEV0, iobase1 + ATA_CB_DH);
}
- // 8.2.1 (h) -- wait for not BSY
- status = await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
- dprintf(6, "ata_reset(2) status=%x\n", status);
+ // On a user-reset request, wait for RDY if it is an ATA device.
+ u8 type=GET_GLOBAL(adrive_g->drive.type);
+ if (type == DTYPE_ATA)
+ status = await_rdy(iobase1);
+done:
// Enable interrupts
outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
+
+ dprintf(6, "ata_reset exit status=%x\n", status);
+}
+
+// Check for drive RDY for 16bit interface command.
+static int
+isready(struct atadrive_s *adrive_g)
+{
+ // Read the status from controller
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->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;
+}
+
+// Default 16bit command demuxer for ATA and ATAPI devices.
+static int
+process_ata_misc_op(struct disk_op_s *op)
+{
+ if (!CONFIG_ATA)
+ return 0;
+
+ struct atadrive_s *adrive_g = container_of(
+ op->drive_g, struct atadrive_s, drive);
+ switch (op->command) {
+ case CMD_RESET:
+ ata_reset(adrive_g);
+ return DISK_RET_SUCCESS;
+ case CMD_ISREADY:
+ return isready(adrive_g);
+ case CMD_FORMAT:
+ case CMD_VERIFY:
+ case CMD_SEEK:
+ return DISK_RET_SUCCESS;
+ default:
+ op->count = 0;
+ return DISK_RET_EPARAM;
+ }
}
* ATA send command
****************************************************************/
-struct ata_op_s {
- u64 lba;
- void *far_buffer;
- u16 driveid;
- u16 count;
-};
-
struct ata_pio_command {
u8 feature;
u8 sector_count;
u8 device;
u8 command;
+ u8 feature2;
u8 sector_count2;
u8 lba_low2;
u8 lba_mid2;
// Send an ata command to the drive.
static int
-send_cmd(int driveid, struct ata_pio_command *cmd)
+send_cmd(struct atadrive_s *adrive_g, struct ata_pio_command *cmd)
{
- u8 channel = driveid / 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
- u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
-
- int status = inb(iobase1 + ATA_CB_STAT);
- if (status & ATA_CB_STAT_BSY)
- return -3;
-
- // Disable interrupts
- outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u8 slave = GET_GLOBAL(adrive_g->slave);
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
// Select device
- u8 device = inb(iobase1 + ATA_CB_DH);
- outb(cmd->device, iobase1 + ATA_CB_DH);
- if ((device ^ cmd->device) & (1 << 4))
- // Wait for device to become active.
- mdelay(50);
-
- if (cmd->command & 0x04) {
- outb(0x00, iobase1 + ATA_CB_FR);
+ int status = await_not_bsy(iobase1);
+ if (status < 0)
+ return status;
+ u8 newdh = ((cmd->device & ~ATA_CB_DH_DEV1)
+ | (slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0));
+ u8 olddh = inb(iobase1 + ATA_CB_DH);
+ outb(newdh, iobase1 + ATA_CB_DH);
+ if ((olddh ^ newdh) & (1<<4)) {
+ // Was a device change - wait for device to become not busy.
+ status = ndelay_await_not_bsy(iobase1);
+ if (status < 0)
+ return status;
+ }
+
+ // Check for ATA_CMD_(READ|WRITE)_(SECTORS|DMA)_EXT commands.
+ if ((cmd->command & ~0x11) == ATA_CMD_READ_SECTORS_EXT) {
+ outb(cmd->feature2, iobase1 + ATA_CB_FR);
outb(cmd->sector_count2, iobase1 + ATA_CB_SC);
outb(cmd->lba_low2, iobase1 + ATA_CB_SN);
outb(cmd->lba_mid2, iobase1 + ATA_CB_CL);
outb(cmd->lba_high, iobase1 + ATA_CB_CH);
outb(cmd->command, iobase1 + ATA_CB_CMD);
- status = ndelay_await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
+ return 0;
+}
+
+// Wait for data after calling 'send_cmd'.
+static int
+ata_wait_data(u16 iobase1)
+{
+ int status = ndelay_await_not_bsy(iobase1);
if (status < 0)
return status;
if (status & ATA_CB_STAT_ERR) {
- dprintf(6, "send_cmd : read error\n");
+ dprintf(6, "send_cmd : read error (status=%02x err=%02x)\n"
+ , status, inb(iobase1 + ATA_CB_ERR));
return -4;
}
if (!(status & ATA_CB_STAT_DRQ)) {
- dprintf(6, "send_cmd : DRQ not set (status %02x)\n"
- , (unsigned) status);
+ dprintf(6, "send_cmd : DRQ not set (status %02x)\n", status);
return -5;
}
return 0;
}
+// Send an ata command that does not transfer any further data.
+int
+ata_cmd_nondata(struct atadrive_s *adrive_g, struct ata_pio_command *cmd)
+{
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
+ u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2);
-/****************************************************************
- * ATA transfers
- ****************************************************************/
+ // Disable interrupts
+ outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
-// Read and discard x number of bytes from an io channel.
-static void
-insx_discard(int mode, int iobase1, int bytes)
-{
- int count, i;
- if (mode == ATA_MODE_PIO32) {
- count = bytes / 4;
- for (i=0; i<count; i++)
- inl(iobase1);
- } else {
- count = bytes / 2;
- for (i=0; i<count; i++)
- inw(iobase1);
+ int ret = send_cmd(adrive_g, cmd);
+ if (ret)
+ goto fail;
+ ret = ndelay_await_not_bsy(iobase1);
+ if (ret < 0)
+ goto fail;
+
+ if (ret & ATA_CB_STAT_ERR) {
+ dprintf(6, "nondata cmd : read error (status=%02x err=%02x)\n"
+ , ret, inb(iobase1 + ATA_CB_ERR));
+ ret = -4;
+ goto fail;
}
+ if (ret & ATA_CB_STAT_DRQ) {
+ dprintf(6, "nondata cmd : DRQ set (status %02x)\n", ret);
+ ret = -5;
+ goto fail;
+ }
+
+fail:
+ // Enable interrupts
+ outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
+
+ return ret;
}
-// 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 *far_buffer)
-{
- 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, far_buffer);
-
- // 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);
- u8 mode = GET_GLOBAL(ATA.devices[driveid].mode);
- int current = 0;
+
+/****************************************************************
+ * ATA PIO transfers
+ ****************************************************************/
+
+// Transfer 'op->count' blocks (of 'blocksize' bytes) to/from drive
+// 'op->drive_g'.
+static int
+ata_pio_transfer(struct disk_op_s *op, int iswrite, int blocksize)
+{
+ dprintf(16, "ata_pio_transfer id=%p write=%d count=%d bs=%d buf=%p\n"
+ , op->drive_g, iswrite, op->count, blocksize, op->buf_fl);
+
+ struct atadrive_s *adrive_g = container_of(
+ op->drive_g, struct atadrive_s, drive);
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
+ u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2);
+ int count = op->count;
+ void *buf_fl = op->buf_fl;
int status;
for (;;) {
- int bsize = blocksize;
- if (skipfirst && current == 0) {
- insx_discard(mode, 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, far_buffer);
- if (mode == ATA_MODE_PIO32)
- outsl_far(iobase1, far_buffer, bsize / 4);
+ dprintf(16, "Write sector id=%p dest=%p\n", op->drive_g, buf_fl);
+ if (CONFIG_ATA_PIO32)
+ outsl_fl(iobase1, buf_fl, blocksize / 4);
else
- outsw_far(iobase1, far_buffer, bsize / 2);
+ outsw_fl(iobase1, buf_fl, blocksize / 2);
} else {
// Read data from controller
- dprintf(16, "Read sector id=%d dest=%p\n", driveid, far_buffer);
- if (mode == ATA_MODE_PIO32)
- insl_far(iobase1, far_buffer, bsize / 4);
+ dprintf(16, "Read sector id=%p dest=%p\n", op->drive_g, buf_fl);
+ if (CONFIG_ATA_PIO32)
+ insl_fl(iobase1, buf_fl, blocksize / 4);
else
- insw_far(iobase1, far_buffer, bsize / 2);
+ insw_fl(iobase1, buf_fl, blocksize / 2);
}
- far_buffer += bsize;
+ buf_fl += blocksize;
- if (skiplast && current == count-1)
- insx_discard(mode, iobase1, skiplast);
-
- status = pause_await_ide(NOT_BSY, iobase1, iobase2, IDE_TIMEOUT);
- if (status < 0)
+ status = pause_await_not_bsy(iobase1, iobase2);
+ 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_RDY | ATA_CB_STAT_DRQ
- | ATA_CB_STAT_ERR);
- if (status != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ)) {
- dprintf(6, "ata_transfer : more sectors left (status %02x)\n"
- , (unsigned) status);
+ status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR);
+ if (status != ATA_CB_STAT_DRQ) {
+ dprintf(6, "ata_pio_transfer : more sectors left (status %02x)\n"
+ , status);
+ op->count -= count;
return -6;
}
}
- status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DF
- | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR);
+ status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_DF | ATA_CB_STAT_DRQ
+ | ATA_CB_STAT_ERR);
if (!iswrite)
status &= ~ATA_CB_STAT_DF;
- if (status != ATA_CB_STAT_RDY ) {
- dprintf(6, "ata_transfer : no sectors left (status %02x)\n"
- , (unsigned) status);
+ if (status != 0) {
+ dprintf(6, "ata_pio_transfer : no sectors left (status %02x)\n", status);
return -7;
}
- // Enable interrupts
- outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
return 0;
}
-static noinline int
-ata_transfer_disk(const struct ata_op_s *op, int iswrite)
-{
- return ata_transfer(op->driveid, iswrite, op->count, IDE_SECTOR_SIZE
- , 0, 0, op->far_buffer);
-}
-static noinline int
-ata_transfer_cdrom(const struct ata_op_s *op)
+/****************************************************************
+ * ATA DMA transfers
+ ****************************************************************/
+
+#define BM_CMD 0
+#define BM_CMD_MEMWRITE 0x08
+#define BM_CMD_START 0x01
+#define BM_STATUS 2
+#define BM_STATUS_IRQ 0x04
+#define BM_STATUS_ERROR 0x02
+#define BM_STATUS_ACTIVE 0x01
+#define BM_TABLE 4
+
+struct sff_dma_prd {
+ u32 buf_fl;
+ u32 count;
+};
+
+// Check if DMA available and setup transfer if so.
+static int
+ata_try_dma(struct disk_op_s *op, int iswrite, int blocksize)
{
- return ata_transfer(op->driveid, 0, op->count, CDROM_SECTOR_SIZE
- , 0, 0, op->far_buffer);
+ if (! CONFIG_ATA_DMA)
+ return -1;
+ u32 dest = (u32)op->buf_fl;
+ if (dest & 1)
+ // Need minimum alignment of 1.
+ return -1;
+ struct atadrive_s *adrive_g = container_of(
+ op->drive_g, struct atadrive_s, drive);
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u16 iomaster = GET_GLOBALFLAT(chan_gf->iomaster);
+ if (! iomaster)
+ return -1;
+ u32 bytes = op->count * blocksize;
+ if (! bytes)
+ return -1;
+
+ // Build PRD dma structure.
+ struct sff_dma_prd *dma = MAKE_FLATPTR(
+ get_ebda_seg()
+ , (void*)offsetof(struct extended_bios_data_area_s, extra_stack));
+ struct sff_dma_prd *origdma = dma;
+ while (bytes) {
+ if (dma >= &origdma[16])
+ // Too many descriptors..
+ return -1;
+ u32 count = bytes;
+ u32 max = 0x10000 - (dest & 0xffff);
+ if (count > max)
+ count = max;
+
+ SET_FLATPTR(dma->buf_fl, dest);
+ bytes -= count;
+ if (!bytes)
+ // Last descriptor.
+ count |= 1<<31;
+ dprintf(16, "dma@%p: %08x %08x\n", dma, dest, count);
+ dest += count;
+ SET_FLATPTR(dma->count, count);
+ dma++;
+ }
+
+ // Program bus-master controller.
+ outl((u32)origdma, iomaster + BM_TABLE);
+ u8 oldcmd = inb(iomaster + BM_CMD) & ~(BM_CMD_MEMWRITE|BM_CMD_START);
+ outb(oldcmd | (iswrite ? 0x00 : BM_CMD_MEMWRITE), iomaster + BM_CMD);
+ outb(BM_STATUS_ERROR|BM_STATUS_IRQ, iomaster + BM_STATUS);
+
+ return 0;
}
-static noinline int
-ata_transfer_emu(const struct ata_op_s *op, int before, int after)
+// Transfer data using DMA.
+static int
+ata_dma_transfer(struct disk_op_s *op)
{
- int vcount = op->count * 4 - before - after;
- int ret = ata_transfer(op->driveid, 0, op->count, CDROM_SECTOR_SIZE
- , before*512, after*512, op->far_buffer);
- if (ret) {
- SET_EBDA(sector_count, 0);
- return ret;
+ if (! CONFIG_ATA_DMA)
+ return -1;
+ dprintf(16, "ata_dma_transfer id=%p buf=%p\n", op->drive_g, op->buf_fl);
+
+ struct atadrive_s *adrive_g = container_of(
+ op->drive_g, struct atadrive_s, drive);
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u16 iomaster = GET_GLOBALFLAT(chan_gf->iomaster);
+
+ // Start bus-master controller.
+ u8 oldcmd = inb(iomaster + BM_CMD);
+ outb(oldcmd | BM_CMD_START, iomaster + BM_CMD);
+
+ u64 end = calc_future_tsc(IDE_TIMEOUT);
+ u8 status;
+ for (;;) {
+ status = inb(iomaster + BM_STATUS);
+ if (status & BM_STATUS_IRQ)
+ break;
+ // Transfer in progress
+ if (check_tsc(end)) {
+ // Timeout.
+ warn_timeout();
+ break;
+ }
+ yield();
}
- SET_EBDA(sector_count, vcount);
- return 0;
+ outb(oldcmd & ~BM_CMD_START, iomaster + BM_CMD);
+
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
+ u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2);
+ int idestatus = pause_await_not_bsy(iobase1, iobase2);
+
+ if ((status & (BM_STATUS_IRQ|BM_STATUS_ACTIVE)) == BM_STATUS_IRQ
+ && idestatus >= 0x00
+ && (idestatus & (ATA_CB_STAT_BSY | ATA_CB_STAT_DF | ATA_CB_STAT_DRQ
+ | ATA_CB_STAT_ERR)) == 0x00)
+ // Success.
+ return 0;
+
+ dprintf(6, "IDE DMA error (dma=%x ide=%x/%x/%x)\n", status, idestatus
+ , inb(iobase2 + ATA_CB_ASTAT), inb(iobase1 + ATA_CB_ERR));
+ op->count = 0;
+ return -1;
}
* ATA hard drive functions
****************************************************************/
-static noinline int
-send_cmd_disk(const struct ata_op_s *op, u16 command)
+// Transfer data to harddrive using PIO protocol.
+static int
+ata_pio_cmd_data(struct disk_op_s *op, int iswrite, struct ata_pio_command *cmd)
+{
+ struct atadrive_s *adrive_g = container_of(
+ op->drive_g, struct atadrive_s, drive);
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
+ u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2);
+
+ // Disable interrupts
+ outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
+
+ int ret = send_cmd(adrive_g, cmd);
+ if (ret)
+ goto fail;
+ ret = ata_wait_data(iobase1);
+ if (ret)
+ goto fail;
+ ret = ata_pio_transfer(op, iswrite, DISK_SECTOR_SIZE);
+
+fail:
+ // Enable interrupts
+ outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
+ return ret;
+}
+
+// Transfer data to harddrive using DMA protocol.
+static int
+ata_dma_cmd_data(struct disk_op_s *op, struct ata_pio_command *cmd)
+{
+ if (! CONFIG_ATA_DMA)
+ return -1;
+ struct atadrive_s *adrive_g = container_of(
+ op->drive_g, struct atadrive_s, drive);
+ int ret = send_cmd(adrive_g, cmd);
+ if (ret)
+ return ret;
+ return ata_dma_transfer(op);
+}
+
+// Read/write count blocks from a harddrive.
+static int
+ata_readwrite(struct disk_op_s *op, int iswrite)
{
- u8 slave = op->driveid % 2;
u64 lba = op->lba;
+ int usepio = ata_try_dma(op, iswrite, DISK_SECTOR_SIZE);
+
struct ata_pio_command cmd;
memset(&cmd, 0, sizeof(cmd));
- 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_mid2 = lba >> 32;
cmd.lba_high2 = lba >> 40;
-
- cmd.command |= 0x04;
lba &= 0xffffff;
+
+ if (usepio)
+ cmd.command = (iswrite ? ATA_CMD_WRITE_SECTORS_EXT
+ : ATA_CMD_READ_SECTORS_EXT);
+ else
+ cmd.command = (iswrite ? ATA_CMD_WRITE_DMA_EXT
+ : ATA_CMD_READ_DMA_EXT);
+ } else {
+ if (usepio)
+ cmd.command = (iswrite ? ATA_CMD_WRITE_SECTORS
+ : ATA_CMD_READ_SECTORS);
+ else
+ cmd.command = (iswrite ? ATA_CMD_WRITE_DMA
+ : ATA_CMD_READ_DMA);
}
- cmd.feature = 0;
cmd.sector_count = op->count;
cmd.lba_low = lba;
cmd.lba_mid = lba >> 8;
cmd.lba_high = lba >> 16;
- cmd.device = ((slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0)
- | ((lba >> 24) & 0xf) | ATA_CB_DH_LBA);
+ cmd.device = ((lba >> 24) & 0xf) | ATA_CB_DH_LBA;
- return send_cmd(op->driveid, &cmd);
+ int ret;
+ if (usepio)
+ ret = ata_pio_cmd_data(op, iswrite, &cmd);
+ else
+ ret = ata_dma_cmd_data(op, &cmd);
+ if (ret)
+ return DISK_RET_EBADTRACK;
+ return DISK_RET_SUCCESS;
}
-// Read/write count blocks from a harddrive.
-__always_inline int
-ata_cmd_data(int driveid, u16 command, u64 lba, u16 count, void *far_buffer)
+// 16bit command demuxer for ATA harddrives.
+int
+process_ata_op(struct disk_op_s *op)
{
- struct ata_op_s op;
- op.driveid = driveid;
- op.lba = lba;
- op.count = count;
- op.far_buffer = far_buffer;
-
- int ret = send_cmd_disk(&op, command);
- if (ret)
- return ret;
-
- int iswrite = command == ATA_CMD_WRITE_SECTORS;
- return ata_transfer_disk(&op, iswrite);
+ if (!CONFIG_ATA)
+ return 0;
+
+ switch (op->command) {
+ case CMD_READ:
+ return ata_readwrite(op, 0);
+ case CMD_WRITE:
+ return ata_readwrite(op, 1);
+ default:
+ return process_ata_misc_op(op);
+ }
}
* ATAPI functions
****************************************************************/
+#define CDROM_CDB_SIZE 12
+
// Low-level atapi command transmit function.
-static __always_inline int
-send_atapi_cmd(int driveid, u8 *cmdbuf, u8 cmdlen, u16 blocksize)
+int
+atapi_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize)
{
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
- u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+ if (! CONFIG_ATA)
+ return 0;
+
+ struct atadrive_s *adrive_g = container_of(
+ op->drive_g, struct atadrive_s, drive);
+ struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
+ u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
+ u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2);
struct ata_pio_command cmd;
- cmd.sector_count = 0;
- cmd.feature = 0;
- cmd.lba_low = 0;
+ memset(&cmd, 0, sizeof(cmd));
cmd.lba_mid = blocksize;
cmd.lba_high = blocksize >> 8;
- cmd.device = slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0;
cmd.command = ATA_CMD_PACKET;
- int ret = send_cmd(driveid, &cmd);
- if (ret)
- return ret;
-
- // Send command to device
- outsw_far(iobase1, MAKE_FARPTR(GET_SEG(SS), (u32)cmdbuf), cmdlen / 2);
-
- int status = pause_await_ide(NOT_BSY_DRQ, iobase1, iobase2, IDE_TIMEOUT);
- if (status < 0)
- return status;
-
- return 0;
-}
-
-// Low-level cdrom read atapi command transmit function.
-static int
-send_cmd_cdrom(const struct ata_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[2]=(op->lba & 0xff000000) >> 24; // LBA
- atacmd[3]=(op->lba & 0x00ff0000) >> 16;
- 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.
-__always_inline int
-cdrom_read(int driveid, u32 lba, u32 count, void *far_buffer)
-{
- struct ata_op_s op;
- op.driveid = driveid;
- op.lba = lba;
- op.count = count;
- op.far_buffer = far_buffer;
+ // Disable interrupts
+ outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
- int ret = send_cmd_cdrom(&op);
+ int ret = send_cmd(adrive_g, &cmd);
if (ret)
- return ret;
+ goto fail;
+ ret = ata_wait_data(iobase1);
+ if (ret)
+ goto fail;
- return ata_transfer_cdrom(&op);
-}
+ // Send command to device
+ outsw_fl(iobase1, MAKE_FLATPTR(GET_SEG(SS), cdbcmd), CDROM_CDB_SIZE / 2);
-// Pretend the cdrom has 512 byte sectors (instead of 2048) and read
-// sectors.
-__always_inline int
-cdrom_read_512(int driveid, u32 vlba, u32 vcount, void *far_buffer)
-{
- u32 velba = vlba + vcount - 1;
- u32 lba = vlba / 4;
- u32 elba = velba / 4;
- int count = elba - lba + 1;
- int before = vlba % 4;
- int after = 3 - (velba % 4);
+ int status = pause_await_not_bsy(iobase1, iobase2);
+ if (status < 0) {
+ ret = status;
+ goto fail;
+ }
- struct ata_op_s op;
- op.driveid = driveid;
- op.lba = lba;
- op.count = count;
- op.far_buffer = far_buffer;
+ if (status & ATA_CB_STAT_ERR) {
+ u8 err = inb(iobase1 + ATA_CB_ERR);
+ // skip "Not Ready"
+ if (err != 0x20)
+ dprintf(6, "send_atapi_cmd : read error (status=%02x err=%02x)\n"
+ , status, err);
+ ret = -2;
+ goto fail;
+ }
+ if (!(status & ATA_CB_STAT_DRQ)) {
+ dprintf(6, "send_atapi_cmd : DRQ not set (status %02x)\n", status);
+ ret = -3;
+ goto fail;
+ }
- dprintf(16, "cdrom_read_512: id=%d vlba=%d vcount=%d buf=%p lba=%d elba=%d"
- " count=%d before=%d after=%d\n"
- , driveid, vlba, vcount, far_buffer, lba, elba
- , count, before, after);
+ ret = ata_pio_transfer(op, 0, blocksize);
- int ret = send_cmd_cdrom(&op);
+fail:
+ // Enable interrupts
+ outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
if (ret)
- return ret;
-
- return ata_transfer_emu(&op, before, after);
+ return DISK_RET_EBADTRACK;
+ return DISK_RET_SUCCESS;
}
-// Send a simple atapi command to a drive.
+// 16bit command demuxer for ATAPI cdroms.
int
-ata_cmd_packet(int driveid, u8 *cmdbuf, u8 cmdlen
- , u32 length, void *far_buffer)
+process_atapi_op(struct disk_op_s *op)
{
- int ret = send_atapi_cmd(driveid, cmdbuf, cmdlen, length);
- if (ret)
- return ret;
-
- return ata_transfer(driveid, 0, 1, length, 0, 0, far_buffer);
+ if (!CONFIG_ATA)
+ return 0;
+ switch (op->command) {
+ case CMD_READ:
+ return cdb_read(op);
+ case CMD_FORMAT:
+ case CMD_WRITE:
+ return DISK_RET_EWRITEPROTECT;
+ default:
+ return process_ata_misc_op(op);
+ }
}
* ATA detect and init
****************************************************************/
-static void
-report_model(int driveid, u8 *buffer)
+// Send an identify device or identify device packet command.
+static int
+send_ata_identity(struct atadrive_s *adrive_g, u16 *buffer, int command)
{
- u8 model[41];
+ memset(buffer, 0, DISK_SECTOR_SIZE);
- // Read model name
- int i;
- for (i=0; i<40; i+=2) {
- model[i] = buffer[i+54+1];
- model[i+1] = buffer[i+54];
- }
+ struct disk_op_s dop;
+ memset(&dop, 0, sizeof(dop));
+ dop.drive_g = &adrive_g->drive;
+ dop.count = 1;
+ dop.lba = 1;
+ dop.buf_fl = MAKE_FLATPTR(GET_SEG(SS), buffer);
- // Reformat
- model[40] = 0x00;
- for (i=39; i>0; i--) {
- if (model[i] != 0x20)
- break;
- model[i] = 0x00;
- }
+ struct ata_pio_command cmd;
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.command = command;
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- // XXX - model on stack not %cs
- printf("ata%d %s: %s", channel, slave ? " slave" : "master", model);
+ return ata_pio_cmd_data(&dop, 0, &cmd);
}
-static u8
-get_ata_version(u8 *buffer)
+// Extract the ATA/ATAPI version info.
+int
+ata_extract_version(u16 *buffer)
{
- u16 ataversion = *(u16*)&buffer[160];
+ // Extract ATA/ATAPI version.
+ u16 ataversion = buffer[80];
u8 version;
for (version=15; version>0; version--)
if (ataversion & (1<<version))
return version;
}
-static void
-init_drive_atapi(int driveid)
-{
- SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATAPI);
-
- // Temporary values to do the transfer
- SET_GLOBAL(ATA.devices[driveid].device,ATA_DEVICE_CDROM);
- SET_GLOBAL(ATA.devices[driveid].mode, ATA_MODE_PIO16);
-
- // Now we send a IDENTIFY command to ATAPI device
- u8 buffer[0x0200];
- memset(buffer, 0, sizeof(buffer));
- u16 ret = ata_cmd_data(driveid, ATA_CMD_IDENTIFY_DEVICE_PACKET
- , 1, 1
- , MAKE_FARPTR(GET_SEG(SS), (u32)buffer));
- if (ret != 0)
- BX_PANIC("ata-detect: Failed to detect ATAPI device\n");
-
- u8 type = buffer[1] & 0x1f;
- u8 removable = (buffer[0] & 0x80) ? 1 : 0;
- u8 mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
- u16 blksize = CDROM_SECTOR_SIZE;
-
- SET_GLOBAL(ATA.devices[driveid].device, type);
- SET_GLOBAL(ATA.devices[driveid].removable, removable);
- SET_GLOBAL(ATA.devices[driveid].mode, mode);
- SET_GLOBAL(ATA.devices[driveid].blksize, blksize);
-
- // fill cdidmap
- u8 cdcount = GET_GLOBAL(ATA.cdcount);
- SET_GLOBAL(ATA.idmap[1][cdcount], driveid);
- SET_GLOBAL(ATA.cdcount, ++cdcount);
-
- report_model(driveid, buffer);
- u8 version = get_ata_version(buffer);
- if (GET_GLOBAL(ATA.devices[driveid].device)==ATA_DEVICE_CDROM)
- printf(" ATAPI-%d CD-Rom/DVD-Rom\n", version);
- else
- printf(" ATAPI-%d Device\n", version);
-}
+#define MAXMODEL 40
-static void
-fill_fdpt(int driveid)
+// Extract the ATA/ATAPI model info.
+char *
+ata_extract_model(char *model, u32 size, u16 *buffer)
{
- 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 extended_bios_data_area_s *ebda = get_ebda_ptr();
- ebda->fdpt[driveid].precompensation = 0xffff;
- ebda->fdpt[driveid].drive_control_byte = 0xc0 | ((nph > 8) << 3);
- ebda->fdpt[driveid].landing_zone = npc;
- ebda->fdpt[driveid].cylinders = nlc;
- ebda->fdpt[driveid].heads = nlh;
- ebda->fdpt[driveid].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)
- ebda->fdpt[driveid].phys_cylinders = npc;
- ebda->fdpt[driveid].phys_heads = nph;
- ebda->fdpt[driveid].phys_sectors = npspt;
- ebda->fdpt[driveid].a0h_signature = 0xa0;
-
- // Checksum structure.
- u8 sum = checksum((u8*)&ebda->fdpt[driveid], sizeof(ebda->fdpt[driveid])-1);
- ebda->fdpt[driveid].checksum = -sum;
+ // Read model name
+ int i;
+ for (i=0; i<size/2; i++)
+ *(u16*)&model[i*2] = ntohs(buffer[27+i]);
+ model[size] = 0x00;
+ nullTrailingSpace(model);
+ return model;
}
-static u8
-get_translation(int driveid)
+// Common init code between ata and atapi
+static struct atadrive_s *
+init_atadrive(struct atadrive_s *dummy, u16 *buffer)
{
- 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;
+ struct atadrive_s *adrive_g = malloc_fseg(sizeof(*adrive_g));
+ if (!adrive_g) {
+ warn_noalloc();
+ return NULL;
}
-
- // 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;
+ memset(adrive_g, 0, sizeof(*adrive_g));
+ adrive_g->chan_gf = dummy->chan_gf;
+ adrive_g->slave = dummy->slave;
+ adrive_g->drive.cntl_id = adrive_g->chan_gf->chanid * 2 + dummy->slave;
+ adrive_g->drive.removable = (buffer[0] & 0x80) ? 1 : 0;
+ return adrive_g;
}
-static void
-setup_translation(int driveid)
-{
- 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;
- 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;
+// Detect if the given drive is an atapi - initialize it if so.
+static struct atadrive_s *
+init_drive_atapi(struct atadrive_s *dummy, u16 *buffer)
+{
+ // Send an IDENTIFY_DEVICE_PACKET command to device
+ int ret = send_ata_identity(dummy, buffer, ATA_CMD_IDENTIFY_PACKET_DEVICE);
+ if (ret)
+ return NULL;
+
+ // Success - setup as ATAPI.
+ struct atadrive_s *adrive_g = init_atadrive(dummy, buffer);
+ if (!adrive_g)
+ return NULL;
+ adrive_g->drive.type = DTYPE_ATAPI;
+ adrive_g->drive.blksize = CDROM_SECTOR_SIZE;
+ adrive_g->drive.sectors = (u64)-1;
+ u8 iscd = ((buffer[0] >> 8) & 0x1f) == 0x05;
+ char model[MAXMODEL+1];
+ char *desc = znprintf(MAXDESCSIZE
+ , "DVD/CD [ata%d-%d: %s ATAPI-%d %s]"
+ , adrive_g->chan_gf->chanid, adrive_g->slave
+ , ata_extract_model(model, MAXMODEL, buffer)
+ , ata_extract_version(buffer)
+ , (iscd ? "DVD/CD" : "Device"));
+ dprintf(1, "%s\n", desc);
+
+ // fill cdidmap
+ if (iscd) {
+ int prio = bootprio_find_ata_device(adrive_g->chan_gf->pci_tmp,
+ adrive_g->chan_gf->chanid,
+ adrive_g->slave);
+ boot_add_cd(&adrive_g->drive, desc, prio);
}
- // 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 adrive_g;
}
-static void
-init_drive_ata(int driveid)
+// Detect if the given drive is a regular ata drive - initialize it if so.
+static struct atadrive_s *
+init_drive_ata(struct atadrive_s *dummy, u16 *buffer)
{
- SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATA);
-
- // Temporary values to do the transfer
- SET_GLOBAL(ATA.devices[driveid].device, ATA_DEVICE_HD);
- SET_GLOBAL(ATA.devices[driveid].mode, ATA_MODE_PIO16);
-
- // Now we send a IDENTIFY command to ATA device
- u8 buffer[0x0200];
- memset(buffer, 0, sizeof(buffer));
- u16 ret = ata_cmd_data(driveid, ATA_CMD_IDENTIFY_DEVICE
- , 1, 1
- , MAKE_FARPTR(GET_SEG(SS), (u32)buffer));
+ // Send an IDENTIFY_DEVICE command to device
+ int ret = send_ata_identity(dummy, buffer, ATA_CMD_IDENTIFY_DEVICE);
if (ret)
- BX_PANIC("ata-detect: Failed to detect ATA device\n");
+ return NULL;
- u8 removable = (buffer[0] & 0x80) ? 1 : 0;
- u8 mode = buffer[48*2] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
- u16 blksize = IDE_SECTOR_SIZE;
+ // Success - setup as ATA.
+ struct atadrive_s *adrive_g = init_atadrive(dummy, buffer);
+ if (!adrive_g)
+ return NULL;
+ adrive_g->drive.type = DTYPE_ATA;
+ adrive_g->drive.blksize = DISK_SECTOR_SIZE;
- u16 cylinders = *(u16*)&buffer[1*2]; // word 1
- u16 heads = *(u16*)&buffer[3*2]; // word 3
- u16 spt = *(u16*)&buffer[6*2]; // word 6
+ adrive_g->drive.pchs.cylinders = buffer[1];
+ adrive_g->drive.pchs.heads = buffer[3];
+ adrive_g->drive.pchs.spt = buffer[6];
u64 sectors;
- if (*(u16*)&buffer[83*2] & (1 << 10)) // word 83 - lba48 support
- sectors = *(u64*)&buffer[100*2]; // word 100-103
+ if (buffer[83] & (1 << 10)) // word 83 - lba48 support
+ sectors = *(u64*)&buffer[100]; // word 100-103
else
- sectors = *(u32*)&buffer[60*2]; // word 60 and word 61
-
- SET_GLOBAL(ATA.devices[driveid].device, ATA_DEVICE_HD);
- SET_GLOBAL(ATA.devices[driveid].removable, removable);
- SET_GLOBAL(ATA.devices[driveid].mode, mode);
- SET_GLOBAL(ATA.devices[driveid].blksize, blksize);
- SET_GLOBAL(ATA.devices[driveid].pchs.heads, heads);
- SET_GLOBAL(ATA.devices[driveid].pchs.cylinders, cylinders);
- SET_GLOBAL(ATA.devices[driveid].pchs.spt, spt);
- SET_GLOBAL(ATA.devices[driveid].sectors, sectors);
-
- // Setup disk geometry translation.
- setup_translation(driveid);
-
- // fill hdidmap
- u8 hdcount = GET_BDA(hdcount);
- SET_GLOBAL(ATA.idmap[0][hdcount], driveid);
- SET_BDA(hdcount, ++hdcount);
-
- // Fill "fdpt" structure.
- fill_fdpt(driveid);
-
- // Report drive info to user.
- u64 sizeinmb = GET_GLOBAL(ATA.devices[driveid].sectors) >> 11;
- report_model(driveid, buffer);
- u8 version = get_ata_version(buffer);
- if (sizeinmb < (1 << 16))
- printf(" ATA-%d Hard-Disk (%u MiBytes)\n", version, (u32)sizeinmb);
- else
- printf(" ATA-%d Hard-Disk (%u GiBytes)\n", version
- , (u32)(sizeinmb >> 10));
+ sectors = *(u32*)&buffer[60]; // word 60 and word 61
+ adrive_g->drive.sectors = sectors;
+ u64 adjsize = sectors >> 11;
+ char adjprefix = 'M';
+ if (adjsize >= (1 << 16)) {
+ adjsize >>= 10;
+ adjprefix = 'G';
+ }
+ char model[MAXMODEL+1];
+ char *desc = znprintf(MAXDESCSIZE
+ , "ata%d-%d: %s ATA-%d Hard-Disk (%u %ciBytes)"
+ , adrive_g->chan_gf->chanid, adrive_g->slave
+ , ata_extract_model(model, MAXMODEL, buffer)
+ , ata_extract_version(buffer)
+ , (u32)adjsize, adjprefix);
+ dprintf(1, "%s\n", desc);
+
+ int prio = bootprio_find_ata_device(adrive_g->chan_gf->pci_tmp,
+ adrive_g->chan_gf->chanid,
+ adrive_g->slave);
+ // Register with bcv system.
+ boot_add_hd(&adrive_g->drive, desc, prio);
+
+ return adrive_g;
}
-static void
-init_drive_unknown(int driveid)
-{
- SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_UNKNOWN);
+static u64 SpinupEnd;
- u8 channel = driveid / 2;
- u8 slave = driveid % 2;
- printf("ata%d %s: Unknown device\n", channel, slave ? " slave" : "master");
+// Wait for non-busy status and check for "floating bus" condition.
+static int
+powerup_await_non_bsy(u16 base)
+{
+ u8 orstatus = 0;
+ u8 status;
+ for (;;) {
+ status = inb(base+ATA_CB_STAT);
+ if (!(status & ATA_CB_STAT_BSY))
+ break;
+ orstatus |= status;
+ if (orstatus == 0xff) {
+ dprintf(4, "powerup IDE floating\n");
+ return orstatus;
+ }
+ if (check_tsc(SpinupEnd)) {
+ warn_timeout();
+ return -1;
+ }
+ yield();
+ }
+ dprintf(6, "powerup iobase=%x st=%x\n", base, status);
+ return status;
}
+// Detect any drives attached to a given controller.
static void
-ata_detect()
+ata_detect(void *data)
{
+ struct ata_channel_s *chan_gf = data;
+ struct atadrive_s dummy;
+ memset(&dummy, 0, sizeof(dummy));
+ dummy.chan_gf = chan_gf;
// Device detection
- int driveid;
- for(driveid=0; driveid<CONFIG_MAX_ATA_DEVICES; 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);
- if (!iobase1)
- break;
-
- // Disable interrupts
- outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2+ATA_CB_DC);
+ int didreset = 0;
+ u8 slave;
+ for (slave=0; slave<=1; slave++) {
+ // Wait for not-bsy.
+ u16 iobase1 = chan_gf->iobase1;
+ int status = powerup_await_non_bsy(iobase1);
+ if (status < 0)
+ 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);
+ if (status < 0)
+ continue;
- // Look for device
- outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1+ATA_CB_DH);
- mdelay(50);
- outb(0x55, iobase1+ATA_CB_SC);
- outb(0xaa, iobase1+ATA_CB_SN);
- outb(0xaa, iobase1+ATA_CB_SC);
- outb(0x55, iobase1+ATA_CB_SN);
+ // Check if ioport registers look valid.
+ outb(newdh, iobase1+ATA_CB_DH);
+ u8 dh = inb(iobase1+ATA_CB_DH);
outb(0x55, iobase1+ATA_CB_SC);
outb(0xaa, iobase1+ATA_CB_SN);
-
- // If we found something
u8 sc = inb(iobase1+ATA_CB_SC);
u8 sn = inb(iobase1+ATA_CB_SN);
- dprintf(6, "ata_detect(1) drive=%d sc=%x sn=%x\n", driveid, sc, sn);
-
- if (sc != 0x55 || sn != 0xaa)
+ dprintf(6, "ata_detect ata%d-%d: sc=%x sn=%x dh=%x\n"
+ , chan_gf->chanid, slave, sc, sn, dh);
+ if (sc != 0x55 || sn != 0xaa || dh != newdh)
continue;
+ // Prepare new drive.
+ dummy.slave = slave;
+
// reset the channel
- ata_reset(driveid);
-
- // check for ATA or ATAPI
- outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1+ATA_CB_DH);
- mdelay(50);
- sc = inb(iobase1+ATA_CB_SC);
- sn = inb(iobase1+ATA_CB_SN);
- dprintf(6, "ata_detect(2) drive=%d sc=%x sn=%x\n", driveid, sc, sn);
- if (sc!=0x01 || sn!=0x01) {
- init_drive_unknown(driveid);
- continue;
+ if (!didreset) {
+ ata_reset(&dummy);
+ didreset = 1;
}
- u8 cl = inb(iobase1+ATA_CB_CL);
- u8 ch = inb(iobase1+ATA_CB_CH);
- u8 st = inb(iobase1+ATA_CB_STAT);
- dprintf(6, "ata_detect(3) drive=%d sc=%x sn=%x cl=%x ch=%x st=%x\n"
- , driveid, sc, sn, cl, ch, st);
-
- if (cl==0x14 && ch==0xeb)
- init_drive_atapi(driveid);
- else if (cl==0x00 && ch==0x00 && st!=0x00)
- init_drive_ata(driveid);
- else if (cl==0xff && ch==0xff)
- // None
- continue;
- else
- init_drive_unknown(driveid);
+
+ // check for ATAPI
+ u16 buffer[256];
+ struct atadrive_s *adrive_g = init_drive_atapi(&dummy, buffer);
+ if (!adrive_g) {
+ // Didn't find an ATAPI drive - look for ATA drive.
+ u8 st = inb(iobase1+ATA_CB_STAT);
+ if (!st)
+ // Status not set - can't be a valid drive.
+ continue;
+
+ // Wait for RDY.
+ int ret = await_rdy(iobase1);
+ if (ret < 0)
+ continue;
+
+ // check for ATA.
+ adrive_g = init_drive_ata(&dummy, buffer);
+ if (!adrive_g)
+ // No ATA drive found
+ continue;
+ }
+
+ 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.
+ break;
}
+}
- printf("\n");
+// Initialize an ata controller and detect its drives.
+static void
+init_controller(struct pci_device *pci, int irq
+ , u32 port1, u32 port2, u32 master)
+{
+ static int chanid = 0;
+ struct ata_channel_s *chan_gf = malloc_fseg(sizeof(*chan_gf));
+ if (!chan_gf) {
+ warn_noalloc();
+ return;
+ }
+ chan_gf->chanid = chanid++;
+ chan_gf->irq = irq;
+ chan_gf->pci_bdf = pci ? pci->bdf : -1;
+ chan_gf->pci_tmp = pci;
+ chan_gf->iobase1 = port1;
+ chan_gf->iobase2 = port2;
+ chan_gf->iomaster = master;
+ dprintf(1, "ATA controller %d at %x/%x/%x (irq %d dev %x)\n"
+ , chanid, port1, port2, master, irq, chan_gf->pci_bdf);
+ run_thread(ata_detect, chan_gf);
}
+#define IRQ_ATA1 14
+#define IRQ_ATA2 15
+
+// Handle controllers on an ATA PCI device.
static void
-ata_init()
+init_pciata(struct pci_device *pci, u8 prog_if)
{
- // 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);
+ pci->have_driver = 1;
+ u16 bdf = pci->bdf;
+ u8 pciirq = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
+ int master = 0;
+ if (CONFIG_ATA_DMA && prog_if & 0x80) {
+ // Check for bus-mastering.
+ u32 bar = pci_config_readl(bdf, PCI_BASE_ADDRESS_4);
+ if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
+ master = bar & PCI_BASE_ADDRESS_IO_MASK;
+ pci_config_maskw(bdf, PCI_COMMAND, 0, PCI_COMMAND_MASTER);
+ }
}
- // 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;
+ u32 port1, port2, irq;
+ if (prog_if & 1) {
+ port1 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_0)
+ & PCI_BASE_ADDRESS_IO_MASK);
+ port2 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_1)
+ & PCI_BASE_ADDRESS_IO_MASK);
+ irq = pciirq;
+ } else {
+ port1 = PORT_ATA1_CMD_BASE;
+ port2 = PORT_ATA1_CTRL_BASE;
+ irq = IRQ_ATA1;
+ }
+ init_controller(pci, irq, port1, port2, master);
+
+ if (prog_if & 4) {
+ port1 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_2)
+ & PCI_BASE_ADDRESS_IO_MASK);
+ port2 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_3)
+ & PCI_BASE_ADDRESS_IO_MASK);
+ irq = pciirq;
+ } else {
+ port1 = PORT_ATA2_CMD_BASE;
+ port2 = PORT_ATA2_CTRL_BASE;
+ irq = IRQ_ATA2;
+ }
+ init_controller(pci, irq, port1, port2, master ? master + 8 : 0);
+}
+
+static void
+found_genericata(struct pci_device *pci, void *arg)
+{
+ init_pciata(pci, pci->prog_if);
+}
- u8 irq = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
- SET_GLOBAL(ATA.channels[count].irq, irq);
- SET_GLOBAL(ATA.channels[count].pci_bdf, bdf);
+static void
+found_compatibleahci(struct pci_device *pci, void *arg)
+{
+ if (CONFIG_AHCI)
+ // Already handled directly via native ahci interface.
+ return;
+ init_pciata(pci, 0x8f);
+}
- u8 prog_if = pci_config_readb(bdf, PCI_CLASS_PROG);
- u32 port1, port2;
+static const struct pci_device_id pci_ata_tbl[] = {
+ PCI_DEVICE_CLASS(PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE
+ , found_genericata),
+ PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4391, found_compatibleahci),
+ PCI_DEVICE_END,
+};
- if (prog_if & 1) {
- port1 = pci_config_readl(bdf, PCI_BASE_ADDRESS_0) & ~3;
- port2 = pci_config_readl(bdf, PCI_BASE_ADDRESS_1) & ~3;
- } else {
- port1 = 0x1f0;
- port2 = 0x3f0;
- }
- 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++;
-
- if (prog_if & 4) {
- port1 = pci_config_readl(bdf, PCI_BASE_ADDRESS_2) & ~3;
- port2 = pci_config_readl(bdf, PCI_BASE_ADDRESS_3) & ~3;
- } else {
- port1 = 0x170;
- port2 = 0x370;
- }
- 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);
- count++;
+// Locate and init ata controllers.
+static void
+ata_init(void)
+{
+ if (!CONFIG_COREBOOT && !PCIDevices) {
+ // No PCI devices found - probably a QEMU "-M isapc" machine.
+ // Try using ISA ports for ATA controllers.
+ init_controller(NULL, IRQ_ATA1
+ , PORT_ATA1_CMD_BASE, PORT_ATA1_CTRL_BASE, 0);
+ init_controller(NULL, IRQ_ATA2
+ , PORT_ATA2_CMD_BASE, PORT_ATA2_CTRL_BASE, 0);
+ return;
+ }
+
+ // Scan PCI bus for ATA adapters
+ struct pci_device *pci;
+ foreachpci(pci) {
+ pci_init_device(pci_ata_tbl, pci, NULL);
}
}
void
-hard_drive_setup()
+ata_setup(void)
{
+ ASSERT32FLAT();
if (!CONFIG_ATA)
return;
dprintf(3, "init hard drives\n");
+
+ SpinupEnd = calc_future_tsc(IDE_TIMEOUT);
ata_init();
- ata_detect();
SET_BDA(disk_control_byte, 0xc0);
- enable_hwirq(14, entry_76);
+ enable_hwirq(14, FUNC16(entry_76));
}
projects / seabios.git / blobdiff