// Copyright (C) 2008 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" // BX_INFO
+#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_ids.h" // PCI_CLASS_STORAGE_OTHER
+#include "pci_regs.h" // PCI_INTERRUPT_LINE
+#include "disk.h" // struct ata_s
+#include "atabits.h" // ATA_CB_STAT
#define TIMEOUT 0
#define BSY 1
#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
-#define DEBUGF1(fmt, args...) bprintf(0, fmt , ##args)
-#define DEBUGF(fmt, args...)
+struct ata_s ATA VAR16_32;
+
-// XXX - lots of redundancy in this file.
+/****************************************************************
+ * Helper functions
+ ****************************************************************/
+// Wait for the specified ide state
static int
await_ide(u8 when_done, u16 base, u16 timeout)
{
- u32 time=0,last=0;
- // for the times you're supposed to throw one away
- u16 status = inb(base + ATA_CB_STAT);
+ u64 end = calc_future_tsc(timeout);
for (;;) {
- status = inb(base+ATA_CB_STAT);
- time++;
- u8 result;
+ 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) && !(status & ATA_CB_STAT_DRQ);
else if (when_done == NOT_BSY_RDY)
result = !(status & ATA_CB_STAT_BSY) && (status & ATA_CB_STAT_RDY);
- else if (when_done == TIMEOUT)
- result = 0;
if (result)
- return 0;
- // mod 2048 each 16 ms
- if (time>>16 != last) {
- last = time >>16;
- DEBUGF("await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY)"
- " %d time= %d timeout= %d\n"
- , when_done, time>>11, timeout);
- }
+ return status;
if (status & ATA_CB_STAT_ERR) {
- DEBUGF("await_ide: ERROR (TIMEOUT,BSY,!BSY,!BSY_DRQ"
- ",!BSY_!DRQ,!BSY_RDY) %d time= %d timeout= %d\n"
- , when_done, time>>11, timeout);
+ dprintf(1, "await_ide: ERROR (TIMEOUT,BSY,!BSY,!BSY_DRQ"
+ ",!BSY_!DRQ,!BSY_RDY) %d status=%x timeout=%d\n"
+ , when_done, status, timeout);
return -1;
}
- if ((timeout == 0) || ((time>>11) > timeout))
+ if (rdtscll() >= end)
break;
}
- BX_INFO("IDE time out\n");
- return -1;
+ dprintf(1, "IDE time out\n");
+ return -2;
}
+// 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)
+{
+ // Wait one PIO transfer cycle.
+ inb(iobase2 + ATA_CB_ASTAT);
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : software reset
-// ---------------------------------------------------------------------------
-// ATA-3
-// 8.2.1 Software reset - Device 0
+ return await_ide(when_done, iobase1, timeout);
+}
-void
-ata_reset(u16 device)
+// Wait for ide state - pause for 400ns first.
+static __always_inline int
+ndelay_await_ide(u8 when_done, u16 iobase1, u16 timeout)
{
- u16 iobase1, iobase2;
- u8 channel, slave, sn, sc;
- u8 type;
-
- channel = device / 2;
- slave = device % 2;
+ ndelay(400);
+ return await_ide(when_done, iobase1, timeout);
+}
- iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- iobase2 = GET_EBDA(ata.channels[channel].iobase2);
+// Reset a drive
+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);
// Reset
outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN | ATA_CB_DC_SRST, iobase2+ATA_CB_DC);
// 8.2.1 (b) -- wait for BSY
- await_ide(BSY, iobase1, 20);
+ int status = await_ide(BSY, iobase1, 20);
+ dprintf(6, "ata_reset(1) status=%x\n", status);
// 8.2.1 (f) -- clear SRST
outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2+ATA_CB_DC);
- type=GET_EBDA(ata.devices[device].type);
- if (type != ATA_TYPE_NONE) {
-
- // 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);
- sc = inb(iobase1+ATA_CB_SC);
- sn = inb(iobase1+ATA_CB_SN);
-
- if ( (sc==0x01) && (sn==0x01) ) {
- if (type == ATA_TYPE_ATA) //ATA
- await_ide(NOT_BSY_RDY, iobase1, IDE_TIMEOUT);
- else //ATAPI
- await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
- }
-
- // 8.2.1 (h) -- wait for not BSY
- await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
+ // 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);
}
+ // 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);
+
// Enable interrupts
outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : execute a data-in command
-// ---------------------------------------------------------------------------
- // returns
- // 0 : no error
- // 1 : BUSY bit set
- // 2 : read error
- // 3 : expected DRQ=1
- // 4 : no sectors left to read/verify
- // 5 : more sectors to read/verify
- // 6 : no sectors left to write
- // 7 : more sectors to write
-u16
-ata_cmd_data_in(u16 device, u16 command, u16 count, u16 cylinder
- , u16 head, u16 sector, u32 lba, u16 segment, u16 offset)
-{
- DEBUGF("ata_cmd_data_in d=%d cmd=%d count=%d c=%d h=%d s=%d"
- " lba=%d seg=%x off=%x\n"
- , device, command, count, cylinder, head, sector
- , lba, segment, offset);
+/****************************************************************
+ * ATA send command
+ ****************************************************************/
- u8 channel = device / 2;
- u8 slave = device % 2;
+struct ata_pio_command {
+ u8 feature;
+ u8 sector_count;
+ u8 lba_low;
+ u8 lba_mid;
+ u8 lba_high;
+ u8 device;
+ u8 command;
- u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2);
- u8 mode = GET_EBDA(ata.devices[device].mode);
+ u8 sector_count2;
+ u8 lba_low2;
+ u8 lba_mid2;
+ u8 lba_high2;
+};
- // Reset count of transferred data
- SET_EBDA(ata.trsfsectors,0);
- SET_EBDA(ata.trsfbytes,0L);
- u8 current = 0;
+// Send an ata command to the drive.
+static int
+send_cmd(int driveid, 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);
- u8 status = inb(iobase1 + ATA_CB_STAT);
+ int status = inb(iobase1 + ATA_CB_STAT);
if (status & ATA_CB_STAT_BSY)
- return 1;
+ return -3;
+ // Disable interrupts
outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
- // sector will be 0 only on lba access. Convert to lba-chs
- if (sector == 0) {
- if ((count >= 1 << 8) || (lba + count >= 1UL << 28)) {
- outb(0x00, iobase1 + ATA_CB_FR);
- outb((count >> 8) & 0xff, iobase1 + ATA_CB_SC);
- outb(lba >> 24, iobase1 + ATA_CB_SN);
- outb(0, iobase1 + ATA_CB_CL);
- outb(0, iobase1 + ATA_CB_CH);
- command |= 0x04;
- count &= (1UL << 8) - 1;
- lba &= (1UL << 24) - 1;
- }
- sector = (u16) (lba & 0x000000ffL);
- cylinder = (u16) ((lba>>8) & 0x0000ffffL);
- head = ((u16) ((lba>>24) & 0x0000000fL)) | ATA_CB_DH_LBA;
+ // 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);
+ 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_high2, iobase1 + ATA_CB_CH);
}
+ outb(cmd->feature, iobase1 + ATA_CB_FR);
+ outb(cmd->sector_count, iobase1 + ATA_CB_SC);
+ outb(cmd->lba_low, iobase1 + ATA_CB_SN);
+ outb(cmd->lba_mid, iobase1 + ATA_CB_CL);
+ outb(cmd->lba_high, iobase1 + ATA_CB_CH);
+ outb(cmd->command, iobase1 + ATA_CB_CMD);
- outb(0x00, iobase1 + ATA_CB_FR);
- outb(count, iobase1 + ATA_CB_SC);
- outb(sector, iobase1 + ATA_CB_SN);
- outb(cylinder & 0x00ff, iobase1 + ATA_CB_CL);
- outb(cylinder >> 8, iobase1 + ATA_CB_CH);
- outb((slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0) | (u8) head
- , iobase1 + ATA_CB_DH);
- outb(command, iobase1 + ATA_CB_CMD);
-
- await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
- status = inb(iobase1 + ATA_CB_STAT);
+ status = ndelay_await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
+ if (status < 0)
+ return status;
if (status & ATA_CB_STAT_ERR) {
- DEBUGF("ata_cmd_data_in : read error\n");
- return 2;
- } else if ( !(status & ATA_CB_STAT_DRQ) ) {
- DEBUGF("ata_cmd_data_in : DRQ not set (status %02x)\n"
- , (unsigned) status);
- return 3;
+ dprintf(6, "send_cmd : read error\n");
+ return -4;
}
+ if (!(status & ATA_CB_STAT_DRQ)) {
+ dprintf(6, "send_cmd : DRQ not set (status %02x)\n"
+ , (unsigned) status);
+ return -5;
+ }
+
+ return 0;
+}
+
- // FIXME : move seg/off translation here
+/****************************************************************
+ * ATA transfers
+ ****************************************************************/
- irq_enable();
+// 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);
+ }
+}
- while (1) {
+// 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);
- if (offset > 0xf800) {
- offset -= 0x800;
- segment += 0x80;
+ // 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;
+ 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);
+ else
+ outsw_far(iobase1, far_buffer, bsize / 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);
+ else
+ insw_far(iobase1, far_buffer, bsize / 2);
+ }
+ far_buffer += bsize;
- if (mode == ATA_MODE_PIO32)
- insl_seg(iobase1, segment, offset, 512 / 4);
- else
- insw_seg(iobase1, segment, offset, 512 / 2);
- offset += 512;
+ if (skiplast && current == count-1)
+ insx_discard(mode, iobase1, skiplast);
+
+ status = pause_await_ide(NOT_BSY, iobase1, iobase2, IDE_TIMEOUT);
+ if (status < 0)
+ // Error
+ return status;
current++;
- SET_EBDA(ata.trsfsectors,current);
- count--;
- await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
- status = inb(iobase1 + ATA_CB_STAT);
- if (count == 0) {
- if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ
- | ATA_CB_STAT_ERR) )
- != ATA_CB_STAT_RDY ) {
- DEBUGF("ata_cmd_data_in : no sectors left (status %02x)\n"
- , (unsigned) status);
- return 4;
- }
+ SET_EBDA(sector_count, current);
+ if (current == count)
break;
- }
- else {
- if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ
- | ATA_CB_STAT_ERR) )
- != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ) ) {
- DEBUGF("ata_cmd_data_in : more sectors left (status %02x)\n"
- , (unsigned) status);
- return 5;
- }
- continue;
+ 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);
+ return -6;
}
}
+
+ status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | 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);
+ return -7;
+ }
+
// Enable interrupts
outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
return 0;
}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : execute a data-out command
-// ---------------------------------------------------------------------------
- // returns
- // 0 : no error
- // 1 : BUSY bit set
- // 2 : read error
- // 3 : expected DRQ=1
- // 4 : no sectors left to read/verify
- // 5 : more sectors to read/verify
- // 6 : no sectors left to write
- // 7 : more sectors to write
-u16
-ata_cmd_data_out(u16 device, u16 command, u16 count, u16 cylinder
- , u16 head, u16 sector, u32 lba, u16 segment, u16 offset)
+static noinline int
+ata_transfer_disk(const struct disk_op_s *op)
{
- DEBUGF("ata_cmd_data_out d=%d cmd=%d count=%d c=%d h=%d s=%d"
- " lba=%d seg=%x off=%x\n"
- , device, command, count, cylinder, head, sector
- , lba, segment, offset);
+ return ata_transfer(op->driveid, op->command == ATA_CMD_WRITE_SECTORS
+ , op->count, IDE_SECTOR_SIZE, 0, 0, op->far_buffer);
+}
- u8 channel = device / 2;
- u8 slave = device % 2;
+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->far_buffer);
+}
- u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2);
- u8 mode = GET_EBDA(ata.devices[device].mode);
+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->far_buffer);
+ if (ret) {
+ SET_EBDA(sector_count, 0);
+ return ret;
+ }
+ SET_EBDA(sector_count, vcount);
+ return 0;
+}
- // Reset count of transferred data
- SET_EBDA(ata.trsfsectors,0);
- SET_EBDA(ata.trsfbytes,0L);
- u8 current = 0;
- u8 status = inb(iobase1 + ATA_CB_STAT);
- if (status & ATA_CB_STAT_BSY)
- return 1;
+/****************************************************************
+ * ATA hard drive functions
+ ****************************************************************/
- outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
+static noinline int
+send_cmd_disk(const struct disk_op_s *op)
+{
+ u8 slave = op->driveid % 2;
+ u64 lba = op->lba;
- // sector will be 0 only on lba access. Convert to lba-chs
- if (sector == 0) {
- if ((count >= 1 << 8) || (lba + count >= 1UL << 28)) {
- outb(0x00, iobase1 + ATA_CB_FR);
- outb((count >> 8) & 0xff, iobase1 + ATA_CB_SC);
- outb(lba >> 24, iobase1 + ATA_CB_SN);
- outb(0, iobase1 + ATA_CB_CL);
- outb(0, iobase1 + ATA_CB_CH);
- command |= 0x04;
- count &= (1UL << 8) - 1;
- lba &= (1UL << 24) - 1;
- }
- sector = (u16) (lba & 0x000000ffL);
- cylinder = (u16) ((lba>>8) & 0x0000ffffL);
- head = ((u16) ((lba>>24) & 0x0000000fL)) | ATA_CB_DH_LBA;
+ struct ata_pio_command cmd;
+ memset(&cmd, 0, sizeof(cmd));
+
+ cmd.command = op->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;
}
- outb(0x00, iobase1 + ATA_CB_FR);
- outb(count, iobase1 + ATA_CB_SC);
- outb(sector, iobase1 + ATA_CB_SN);
- outb(cylinder & 0x00ff, iobase1 + ATA_CB_CL);
- outb(cylinder >> 8, iobase1 + ATA_CB_CH);
- outb((slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0) | (u8) head
- , iobase1 + ATA_CB_DH);
- outb(command, iobase1 + ATA_CB_CMD);
+ 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);
- await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
- status = inb(iobase1 + ATA_CB_STAT);
+ return send_cmd(op->driveid, &cmd);
+}
- if (status & ATA_CB_STAT_ERR) {
- DEBUGF("ata_cmd_data_out : read error\n");
- return 2;
- } else if ( !(status & ATA_CB_STAT_DRQ) ) {
- DEBUGF("ata_cmd_data_out : DRQ not set (status %02x)\n"
- , (unsigned) status);
- return 3;
- }
+// Read/write count blocks from a harddrive.
+__always_inline int
+ata_cmd_data(struct disk_op_s *op)
+{
+ int ret = send_cmd_disk(op);
+ if (ret)
+ return ret;
+ return ata_transfer_disk(op);
+}
- // FIXME : move seg/off translation here
- irq_enable();
+/****************************************************************
+ * ATAPI functions
+ ****************************************************************/
- while (1) {
+// Low-level atapi command transmit function.
+static __always_inline int
+send_atapi_cmd(int driveid, u8 *cmdbuf, u8 cmdlen, 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);
+
+ struct ata_pio_command cmd;
+ cmd.sector_count = 0;
+ cmd.feature = 0;
+ cmd.lba_low = 0;
+ 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;
- if (offset > 0xf800) {
- offset -= 0x800;
- segment += 0x80;
- }
+ // Send command to device
+ outsw_far(iobase1, MAKE_FARPTR(GET_SEG(SS), (u32)cmdbuf), cmdlen / 2);
- if (mode == ATA_MODE_PIO32)
- outsl_seg(iobase1, segment, offset, 512 / 4);
- else
- outsw_seg(iobase1, segment, offset, 512 / 2);
- offset += 512;
+ int status = pause_await_ide(NOT_BSY_DRQ, iobase1, iobase2, IDE_TIMEOUT);
+ if (status < 0)
+ return status;
- current++;
- SET_EBDA(ata.trsfsectors,current);
- count--;
- status = inb(iobase1 + ATA_CB_STAT);
- if (count == 0) {
- if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DF
- | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR) )
- != ATA_CB_STAT_RDY ) {
- DEBUGF("ata_cmd_data_out : no sectors left (status %02x)\n"
- , (unsigned) status);
- return 6;
- }
- break;
- } else {
- if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ
- | ATA_CB_STAT_ERR) )
- != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ) ) {
- DEBUGF("ata_cmd_data_out : more sectors left (status %02x)\n"
- , (unsigned) status);
- return 7;
- }
- continue;
- }
- }
- // Enable interrupts
- outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
return 0;
}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : execute a packet command
-// ---------------------------------------------------------------------------
- // returns
- // 0 : no error
- // 1 : error in parameters
- // 2 : BUSY bit set
- // 3 : error
- // 4 : not ready
-u16
-ata_cmd_packet(u16 device, u8 *cmdbuf, u8 cmdlen, u16 header
- , u32 length, u8 inout, u16 bufseg, u16 bufoff)
+// Low-level cdrom read atapi command transmit function.
+static int
+send_cmd_cdrom(const struct disk_op_s *op)
{
- u16 iobase1, iobase2;
- u16 lcount, lbefore, lafter, count;
- u8 channel, slave;
- u8 status, mode, lmode;
- u32 transfer;
-
- channel = device / 2;
- slave = device % 2;
-
- // Data out is not supported yet
- if (inout == ATA_DATA_OUT) {
- BX_INFO("ata_cmd_packet: DATA_OUT not supported yet\n");
- return 1;
- }
+ u8 atacmd[12];
+ memset(atacmd, 0, sizeof(atacmd));
- // The header length must be even
- if (header & 1) {
- DEBUGF("ata_cmd_packet : header must be even (%04x)\n", header);
- return 1;
- }
+ 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);
- iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- iobase2 = GET_EBDA(ata.channels[channel].iobase2);
- mode = GET_EBDA(ata.devices[device].mode);
- transfer= 0L;
+ return send_atapi_cmd(op->driveid, atacmd, sizeof(atacmd)
+ , CDROM_SECTOR_SIZE);
+}
- if (cmdlen < 12)
- cmdlen=12;
- if (cmdlen > 12)
- cmdlen=16;
- cmdlen>>=1;
+// Read sectors from the cdrom.
+__always_inline int
+cdrom_read(struct disk_op_s *op)
+{
+ int ret = send_cmd_cdrom(op);
+ if (ret)
+ return ret;
- // Reset count of transferred data
- SET_EBDA(ata.trsfsectors,0);
- SET_EBDA(ata.trsfbytes,0L);
+ return ata_transfer_cdrom(op);
+}
- status = inb(iobase1 + ATA_CB_STAT);
- if (status & ATA_CB_STAT_BSY)
- return 2;
+// Pretend the cdrom has 512 byte sectors (instead of 2048) and read
+// sectors.
+__always_inline int
+cdrom_read_512(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->far_buffer, lba, elba
+ , op->count, before, after);
+
+ int ret = send_cmd_cdrom(op);
+ if (ret)
+ return ret;
+
+ return ata_transfer_cdemu(op, before, after);
+}
- outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
- outb(0x00, iobase1 + ATA_CB_FR);
- outb(0x00, iobase1 + ATA_CB_SC);
- outb(0x00, iobase1 + ATA_CB_SN);
- outb(0xfff0 & 0x00ff, iobase1 + ATA_CB_CL);
- outb(0xfff0 >> 8, iobase1 + ATA_CB_CH);
- outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1 + ATA_CB_DH);
- outb(ATA_CMD_PACKET, iobase1 + ATA_CB_CMD);
-
- // Device should ok to receive command
- await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
- status = inb(iobase1 + ATA_CB_STAT);
+// Send a simple atapi command to a drive.
+int
+ata_cmd_packet(int driveid, u8 *cmdbuf, u8 cmdlen
+ , u32 length, void *far_buffer)
+{
+ int ret = send_atapi_cmd(driveid, cmdbuf, cmdlen, length);
+ if (ret)
+ return ret;
- if (status & ATA_CB_STAT_ERR) {
- DEBUGF("ata_cmd_packet : error, status is %02x\n", status);
- return 3;
- } else if ( !(status & ATA_CB_STAT_DRQ) ) {
- DEBUGF("ata_cmd_packet : DRQ not set (status %02x)\n"
- , (unsigned) status);
- return 4;
- }
+ return ata_transfer(driveid, 0, 1, length, 0, 0, far_buffer);
+}
- // Send command to device
- irq_enable();
- outsw_seg(iobase1, GET_SEG(SS), (u32)cmdbuf, cmdlen);
+/****************************************************************
+ * ATA detect and init
+ ****************************************************************/
- if (inout == ATA_DATA_NO) {
- await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
- status = inb(iobase1 + ATA_CB_STAT);
- } else {
- u16 loops = 0;
- u8 sc;
- while (1) {
-
- if (loops == 0) {//first time through
- status = inb(iobase2 + ATA_CB_ASTAT);
- await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
- } else
- await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
- loops++;
-
- status = inb(iobase1 + ATA_CB_STAT);
- sc = inb(iobase1 + ATA_CB_SC);
-
- // Check if command completed
- if(((inb(iobase1 + ATA_CB_SC)&0x7)==0x3) &&
- ((status & (ATA_CB_STAT_RDY | ATA_CB_STAT_ERR)) == ATA_CB_STAT_RDY))
- break;
+static void
+report_model(int driveid, u8 *buffer)
+{
+ u8 model[41];
- if (status & ATA_CB_STAT_ERR) {
- DEBUGF("ata_cmd_packet : error (status %02x)\n", status);
- return 3;
- }
-
- // Normalize address
- bufseg += (bufoff / 16);
- bufoff %= 16;
-
- // Get the byte count
- lcount = ((u16)(inb(iobase1 + ATA_CB_CH))<<8)+inb(iobase1 + ATA_CB_CL);
-
- // adjust to read what we want
- if (header > lcount) {
- lbefore=lcount;
- header-=lcount;
- lcount=0;
- } else {
- lbefore=header;
- header=0;
- lcount-=lbefore;
- }
-
- if (lcount > length) {
- lafter=lcount-length;
- lcount=length;
- length=0;
- } else {
- lafter=0;
- length-=lcount;
- }
-
- // Save byte count
- count = lcount;
-
- DEBUGF("Trying to read %04x bytes (%04x %04x %04x) "
- , lbefore+lcount+lafter, lbefore, lcount, lafter);
- DEBUGF("to 0x%04x:0x%04x\n", bufseg, bufoff);
-
- // If counts not dividable by 4, use 16bits mode
- lmode = mode;
- if (lbefore & 0x03) lmode=ATA_MODE_PIO16;
- if (lcount & 0x03) lmode=ATA_MODE_PIO16;
- if (lafter & 0x03) lmode=ATA_MODE_PIO16;
-
- // adds an extra byte if count are odd. before is always even
- if (lcount & 0x01) {
- lcount+=1;
- if ((lafter > 0) && (lafter & 0x01)) {
- lafter-=1;
- }
- }
-
- if (lmode == ATA_MODE_PIO32) {
- lcount>>=2; lbefore>>=2; lafter>>=2;
- } else {
- lcount>>=1; lbefore>>=1; lafter>>=1;
- }
-
- int i;
- for (i=0; i<lbefore; i++)
- if (lmode == ATA_MODE_PIO32)
- inl(iobase1);
- else
- inw(iobase1);
-
- if (lmode == ATA_MODE_PIO32)
- insl_seg(iobase1, bufseg, bufoff, lcount);
- else
- insw_seg(iobase1, bufseg, bufoff, lcount);
+ // Read model name
+ int i;
+ for (i=0; i<40; i+=2) {
+ model[i] = buffer[i+54+1];
+ model[i+1] = buffer[i+54];
+ }
- for (i=0; i<lafter; i++)
- if (lmode == ATA_MODE_PIO32)
- inl(iobase1);
- else
- inw(iobase1);
+ // Reformat
+ model[40] = 0x00;
+ for (i=39; i>0; i--) {
+ if (model[i] != 0x20)
+ break;
+ model[i] = 0x00;
+ }
- // Compute new buffer address
- bufoff += count;
+ u8 channel = driveid / 2;
+ u8 slave = driveid % 2;
+ // XXX - model on stack not %cs
+ printf("ata%d %s: %s", channel, slave ? " slave" : "master", model);
+}
- // Save transferred bytes count
- transfer += count;
- SET_EBDA(ata.trsfbytes,transfer);
- }
- }
+static u8
+get_ata_version(u8 *buffer)
+{
+ u16 ataversion = *(u16*)&buffer[160];
+ u8 version;
+ for (version=15; version>0; version--)
+ if (ataversion & (1<<version))
+ break;
+ return version;
+}
- // Final check, device must be ready
- if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DF
- | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR) )
- != ATA_CB_STAT_RDY ) {
- DEBUGF("ata_cmd_packet : not ready (status %02x)\n"
- , (unsigned) status);
- return 4;
- }
+static void
+init_drive_atapi(int driveid)
+{
+ SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATAPI);
- // Enable interrupts
- outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
- return 0;
+ // 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));
+ struct disk_op_s dop;
+ dop.driveid = driveid;
+ dop.command = ATA_CMD_IDENTIFY_DEVICE_PACKET;
+ dop.count = 1;
+ dop.lba = 1;
+ dop.far_buffer = MAKE_FARPTR(GET_SEG(SS), (u32)buffer);
+ u16 ret = ata_cmd_data(&dop);
+ 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);
}
-u16
-cdrom_read(u16 device, u32 lba, u32 count, u16 segment, u16 offset, u16 skip)
+static void
+fill_fdpt(int driveid)
{
- u16 sectors = (count + 2048 - 1) / 2048;
+ 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;
+}
- u8 atacmd[12];
- memset(atacmd, 0, sizeof(atacmd));
- atacmd[0]=0x28; // READ command
- atacmd[7]=(sectors & 0xff00) >> 8; // Sectors
- atacmd[8]=(sectors & 0x00ff); // Sectors
- atacmd[2]=(lba & 0xff000000) >> 24; // LBA
- atacmd[3]=(lba & 0x00ff0000) >> 16;
- atacmd[4]=(lba & 0x0000ff00) >> 8;
- atacmd[5]=(lba & 0x000000ff);
-
- return ata_cmd_packet(device, atacmd, sizeof(atacmd)
- , skip, count, ATA_DATA_IN
- , segment, offset);
+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;
}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : device detection
-// ---------------------------------------------------------------------------
+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;
+ }
+ // 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);
+}
-void
-ata_detect()
+static void
+init_drive_ata(int driveid)
{
- u8 hdcount, cdcount, device, type;
- u8 buffer[0x0200];
- memset(buffer, 0, sizeof(buffer));
+ SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATA);
-#if CONFIG_MAX_ATA_INTERFACES > 0
- SET_EBDA(ata.channels[0].iface,ATA_IFACE_ISA);
- SET_EBDA(ata.channels[0].iobase1,0x1f0);
- SET_EBDA(ata.channels[0].iobase2,0x3f0);
- SET_EBDA(ata.channels[0].irq,14);
-#endif
-#if CONFIG_MAX_ATA_INTERFACES > 1
- SET_EBDA(ata.channels[1].iface,ATA_IFACE_ISA);
- SET_EBDA(ata.channels[1].iobase1,0x170);
- SET_EBDA(ata.channels[1].iobase2,0x370);
- SET_EBDA(ata.channels[1].irq,15);
-#endif
-#if CONFIG_MAX_ATA_INTERFACES > 2
- SET_EBDA(ata.channels[2].iface,ATA_IFACE_ISA);
- SET_EBDA(ata.channels[2].iobase1,0x1e8);
- SET_EBDA(ata.channels[2].iobase2,0x3e0);
- SET_EBDA(ata.channels[2].irq,12);
-#endif
-#if CONFIG_MAX_ATA_INTERFACES > 3
- SET_EBDA(ata.channels[3].iface,ATA_IFACE_ISA);
- SET_EBDA(ata.channels[3].iobase1,0x168);
- SET_EBDA(ata.channels[3].iobase2,0x360);
- SET_EBDA(ata.channels[3].irq,11);
-#endif
-#if CONFIG_MAX_ATA_INTERFACES > 4
-#error Please fill the ATA interface informations
-#endif
+ // Temporary values to do the transfer
+ SET_GLOBAL(ATA.devices[driveid].device, ATA_DEVICE_HD);
+ SET_GLOBAL(ATA.devices[driveid].mode, ATA_MODE_PIO16);
- // Device detection
- hdcount=cdcount=0;
+ // Now we send a IDENTIFY command to ATA device
+ u8 buffer[0x0200];
+ memset(buffer, 0, sizeof(buffer));
+ struct disk_op_s dop;
+ dop.driveid = driveid;
+ dop.command = ATA_CMD_IDENTIFY_DEVICE;
+ dop.count = 1;
+ dop.lba = 1;
+ dop.far_buffer = MAKE_FARPTR(GET_SEG(SS), (u32)buffer);
+ u16 ret = ata_cmd_data(&dop);
+ if (ret)
+ BX_PANIC("ata-detect: Failed to detect ATA device\n");
+
+ u8 removable = (buffer[0] & 0x80) ? 1 : 0;
+ u8 mode = buffer[48*2] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
+ u16 blksize = IDE_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
+
+ u64 sectors;
+ if (*(u16*)&buffer[83*2] & (1 << 10)) // word 83 - lba48 support
+ sectors = *(u64*)&buffer[100*2]; // 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));
+}
- for(device=0; device<CONFIG_MAX_ATA_DEVICES; device++) {
- u16 iobase1, iobase2;
- u8 channel, slave, shift;
- u8 sc, sn, cl, ch, st;
+static void
+init_drive_unknown(int driveid)
+{
+ SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_UNKNOWN);
- channel = device / 2;
- slave = device % 2;
+ u8 channel = driveid / 2;
+ u8 slave = driveid % 2;
+ printf("ata%d %s: Unknown device\n", channel, slave ? " slave" : "master");
+}
- iobase1 =GET_EBDA(ata.channels[channel].iobase1);
- iobase2 =GET_EBDA(ata.channels[channel].iobase2);
+static void
+ata_detect()
+{
+ // 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);
// 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(0xaa, iobase1+ATA_CB_SN);
// If we found something
- sc = inb(iobase1+ATA_CB_SC);
- sn = inb(iobase1+ATA_CB_SN);
-
- if ( (sc == 0x55) && (sn == 0xaa) ) {
- SET_EBDA(ata.devices[device].type,ATA_TYPE_UNKNOWN);
-
- // reset the channel
- ata_reset(device);
-
- // check for ATA or ATAPI
- outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1+ATA_CB_DH);
- sc = inb(iobase1+ATA_CB_SC);
- sn = inb(iobase1+ATA_CB_SN);
- if ((sc==0x01) && (sn==0x01)) {
- cl = inb(iobase1+ATA_CB_CL);
- ch = inb(iobase1+ATA_CB_CH);
- st = inb(iobase1+ATA_CB_STAT);
-
- if ((cl==0x14) && (ch==0xeb)) {
- SET_EBDA(ata.devices[device].type,ATA_TYPE_ATAPI);
- } else if ((cl==0x00) && (ch==0x00) && (st!=0x00)) {
- SET_EBDA(ata.devices[device].type,ATA_TYPE_ATA);
- } else if ((cl==0xff) && (ch==0xff)) {
- SET_EBDA(ata.devices[device].type,ATA_TYPE_NONE);
- }
- }
- }
+ 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);
- type=GET_EBDA(ata.devices[device].type);
-
- // Now we send a IDENTIFY command to ATA device
- if(type == ATA_TYPE_ATA) {
- u32 sectors;
- u16 cylinders, heads, spt, blksize;
- u8 translation, removable, mode;
-
- //Temporary values to do the transfer
- SET_EBDA(ata.devices[device].device,ATA_DEVICE_HD);
- SET_EBDA(ata.devices[device].mode, ATA_MODE_PIO16);
-
- u16 ret = ata_cmd_data_in(device,ATA_CMD_IDENTIFY_DEVICE
- , 1, 0, 0, 0, 0L
- , GET_SEG(SS), (u32)buffer);
- if (ret)
- BX_PANIC("ata-detect: Failed to detect ATA device\n");
-
- removable = (buffer[0] & 0x80) ? 1 : 0;
- mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
- blksize = *(u16*)&buffer[10];
-
- cylinders = *(u16*)&buffer[1*2]; // word 1
- heads = *(u16*)&buffer[3*2]; // word 3
- spt = *(u16*)&buffer[6*2]; // word 6
-
- sectors = *(u32*)&buffer[60*2]; // word 60 and word 61
-
- SET_EBDA(ata.devices[device].device,ATA_DEVICE_HD);
- SET_EBDA(ata.devices[device].removable, removable);
- SET_EBDA(ata.devices[device].mode, mode);
- SET_EBDA(ata.devices[device].blksize, blksize);
- SET_EBDA(ata.devices[device].pchs.heads, heads);
- SET_EBDA(ata.devices[device].pchs.cylinders, cylinders);
- SET_EBDA(ata.devices[device].pchs.spt, spt);
- SET_EBDA(ata.devices[device].sectors, sectors);
- BX_INFO("ata%d-%d: PCHS=%u/%d/%d translation=", channel, slave,cylinders, heads, spt);
-
- translation = inb_cmos(CMOS_BIOS_DISKTRANSFLAG + channel/2);
- for (shift=device%4; shift>0; shift--)
- translation >>= 2;
- translation &= 0x03;
-
- SET_EBDA(ata.devices[device].translation, translation);
-
- switch (translation) {
- case ATA_TRANSLATION_NONE:
- BX_INFO("none");
- break;
- case ATA_TRANSLATION_LBA:
- BX_INFO("lba");
- break;
- case ATA_TRANSLATION_LARGE:
- BX_INFO("large");
- break;
- case ATA_TRANSLATION_RECHS:
- BX_INFO("r-echs");
- break;
- }
- switch (translation) {
- case ATA_TRANSLATION_NONE:
- break;
- case ATA_TRANSLATION_LBA:
- spt = 63;
- sectors /= 63;
- heads = sectors / 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 = sectors / heads;
- break;
- case ATA_TRANSLATION_RECHS:
- // 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:
- 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;
- BX_INFO(" LCHS=%d/%d/%d\n", cylinders, heads, spt);
-
- SET_EBDA(ata.devices[device].lchs.heads, heads);
- SET_EBDA(ata.devices[device].lchs.cylinders, cylinders);
- SET_EBDA(ata.devices[device].lchs.spt, spt);
-
- // fill hdidmap
- SET_EBDA(ata.idmap[0][hdcount], device);
- hdcount++;
- }
+ if (sc != 0x55 || sn != 0xaa)
+ continue;
- // Now we send a IDENTIFY command to ATAPI device
- if(type == ATA_TYPE_ATAPI) {
+ // reset the channel
+ ata_reset(driveid);
- u8 type, removable, mode;
- u16 blksize;
+ // 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;
+ }
+ 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);
+ }
- //Temporary values to do the transfer
- SET_EBDA(ata.devices[device].device,ATA_DEVICE_CDROM);
- SET_EBDA(ata.devices[device].mode, ATA_MODE_PIO16);
+ printf("\n");
+}
- u16 ret = ata_cmd_data_in(device,ATA_CMD_IDENTIFY_DEVICE_PACKET
- , 1, 0, 0, 0, 0L
- , GET_SEG(SS), (u32)buffer);
- if (ret != 0)
- BX_PANIC("ata-detect: Failed to detect ATAPI device\n");
+static void
+ata_init()
+{
+ // 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);
+ }
- type = buffer[1] & 0x1f;
- removable = (buffer[0] & 0x80) ? 1 : 0;
- mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
- blksize = 2048;
+ // 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;
- SET_EBDA(ata.devices[device].device, type);
- SET_EBDA(ata.devices[device].removable, removable);
- SET_EBDA(ata.devices[device].mode, mode);
- SET_EBDA(ata.devices[device].blksize, blksize);
+ u8 irq = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
+ SET_GLOBAL(ATA.channels[count].irq, irq);
+ SET_GLOBAL(ATA.channels[count].pci_bdf, bdf);
- // fill cdidmap
- SET_EBDA(ata.idmap[1][cdcount], device);
- cdcount++;
- }
+ u8 prog_if = pci_config_readb(bdf, PCI_CLASS_PROG);
+ u32 port1, port2;
- u32 sizeinmb = 0;
- u16 ataversion;
- u8 c, i, version=0, model[41];
-
- switch (type) {
- case ATA_TYPE_ATA:
- sizeinmb = GET_EBDA(ata.devices[device].sectors);
- sizeinmb >>= 11;
- case ATA_TYPE_ATAPI:
- // Read ATA/ATAPI version
- ataversion=((u16)(buffer[161])<<8) | buffer[160];
- for(version=15;version>0;version--) {
- if ((ataversion&(1<<version))!=0)
- break;
- }
-
- // Read model name
- for (i=0;i<20;i++) {
- model[i*2] = buffer[(i*2)+54+1];
- model[(i*2)+1] = buffer[(i*2)+54];
- }
-
- // Reformat
- model[40] = 0x00;
- for (i=39;i>0;i--) {
- if (model[i]==0x20)
- model[i] = 0x00;
- else
- break;
- }
- break;
+ 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;
}
-
- switch (type) {
- case ATA_TYPE_ATA:
- printf("ata%d %s: ",channel,slave?" slave":"master");
- i=0;
- while ((c=model[i++]))
- printf("%c",c);
- if (sizeinmb < (1UL<<16))
- printf(" ATA-%d Hard-Disk (%u MBytes)\n", version, (u16)sizeinmb);
- else
- printf(" ATA-%d Hard-Disk (%u GBytes)\n", version, (u16)(sizeinmb>>10));
- break;
- case ATA_TYPE_ATAPI:
- printf("ata%d %s: ",channel,slave?" slave":"master");
- i=0;
- while ((c=model[i++]))
- printf("%c",c);
- if (GET_EBDA(ata.devices[device].device)==ATA_DEVICE_CDROM)
- printf(" ATAPI-%d CD-Rom/DVD-Rom\n",version);
- else
- printf(" ATAPI-%d Device\n",version);
- break;
- case ATA_TYPE_UNKNOWN:
- printf("ata%d %s: Unknown device\n",channel,slave?" slave":"master");
- break;
+ 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++;
}
+}
- // Store the devices counts
- SET_EBDA(ata.hdcount, hdcount);
- SET_EBDA(ata.cdcount, cdcount);
- SET_BDA(disk_count, hdcount);
+void
+hard_drive_setup()
+{
+ if (!CONFIG_ATA)
+ return;
- printf("\n");
+ dprintf(3, "init hard drives\n");
+ ata_init();
+ ata_detect();
+
+ SET_BDA(disk_control_byte, 0xc0);
- // FIXME : should use bios=cmos|auto|disable bits
- // FIXME : should know about translation bits
- // FIXME : move hard_drive_post here
+ enable_hwirq(14, entry_76);
}
projects / seabios.git / blobdiff