// 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 "boot.h" // add_bcv_hd
+#include "disk.h" // struct ata_s
+#include "atabits.h" // ATA_CB_STAT
#define TIMEOUT 0
#define BSY 1
#define NOT_BSY_NOT_DRQ 4
#define NOT_BSY_RDY 5
-#define IDE_TIMEOUT 32000u //32 seconds max for IDE ops
+#define IDE_SECTOR_SIZE 512
+#define CDROM_SECTOR_SIZE 2048
-#define DEBUGF1(fmt, args...) bprintf(0, fmt , ##args)
-#define DEBUGF(fmt, args...)
+#define IDE_TIMEOUT 32000 //32 seconds max for IDE ops
-// XXX - lots of redundancy in this file.
+struct ata_s ATA VAR16_32;
-static int
-await_ide(u8 when_done, u16 base, u16 timeout)
+
+/****************************************************************
+ * Helper functions
+ ****************************************************************/
+
+// Wait for the specified ide state
+static inline int
+await_ide(u8 mask, u8 flags, 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;
- 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);
- 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);
- }
- 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);
+ u8 status = inb(base+ATA_CB_STAT);
+ if ((status & mask) == flags)
+ return status;
+ if (rdtscll() > end) {
+ dprintf(1, "IDE time out\n");
return -1;
}
- if ((timeout == 0) || ((time>>11) > timeout))
- break;
}
- BX_INFO("IDE time out\n");
- return -1;
}
+// 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);
+}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : software reset
-// ---------------------------------------------------------------------------
-// ATA-3
-// 8.2.1 Software reset - Device 0
+// 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);
+}
-void
-ata_reset(u16 device)
+// Wait for ide state - pauses for one ata cycle first.
+static inline int
+pause_await_not_bsy(u16 iobase1, u16 iobase2)
{
- u16 iobase1, iobase2;
- u8 channel, slave, sn, sc;
- u8 type;
+ // Wait one PIO transfer cycle.
+ inb(iobase2 + ATA_CB_ASTAT);
- channel = device / 2;
- slave = device % 2;
+ return await_not_bsy(iobase1);
+}
- iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- iobase2 = GET_EBDA(ata.channels[channel].iobase2);
+// Wait for ide state - pause for 400ns first.
+static inline int
+ndelay_await_not_bsy(u16 iobase1)
+{
+ ndelay(400);
+ return await_not_bsy(iobase1);
+}
- // Reset
+// 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);
- // 8.2.1 (a) -- set SRST in DC
+ dprintf(6, "ata_reset driveid=%d\n", driveid);
+ // 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
- await_ide(BSY, iobase1, 20);
-
- // 8.2.1 (f) -- clear SRST
+ udelay(5);
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);
+ mdelay(2);
+
+ // 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 (rdtscll() > end) {
+ dprintf(1, "ata_reset slave time out\n");
+ goto done;
+ }
}
-
- // 8.2.1 (h) -- wait for not BSY
- await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
}
+ // On a user-reset request, wait for RDY if it is an ATA device.
+ u8 type=GET_GLOBAL(ATA.devices[driveid].type);
+ if (type == ATA_TYPE_ATA)
+ status = await_rdy(iobase1);
+
+done:
// Enable interrupts
outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
-}
-static void
-insw(u16 port, u16 segment, u16 offset, u16 count)
-{
- u16 i;
- for (i=0; i<count; i++) {
- u16 d = inw(port);
- SET_FARVAR(segment, *(u16*)(offset + 2*i), d);
- }
+ dprintf(6, "ata_reset exit status=%x\n", status);
}
-static void
-insl(u16 port, u16 segment, u16 offset, u16 count)
-{
- u16 i;
- for (i=0; i<count; i++) {
- u32 d = inl(port);
- SET_FARVAR(segment, *(u32*)(offset + 4*i), d);
- }
-}
-static void
-outsw(u16 port, u16 segment, u16 offset, u16 count)
-{
- u16 i;
- for (i=0; i<count; i++) {
- u16 d = GET_FARVAR(segment, *(u16*)(offset + 2*i));
- outw(d, port);
- }
-}
+/****************************************************************
+ * ATA send command
+ ****************************************************************/
-static void
-outsl(u16 port, u16 segment, u16 offset, u16 count)
-{
- u16 i;
- for (i=0; i<count; i++) {
- u32 d = GET_FARVAR(segment, *(u32*)(offset + 4*i));
- outl(d, port);
- }
-}
+struct ata_pio_command {
+ u8 feature;
+ u8 sector_count;
+ u8 lba_low;
+ u8 lba_mid;
+ u8 lba_high;
+ u8 device;
+ u8 command;
+ u8 sector_count2;
+ u8 lba_low2;
+ u8 lba_mid2;
+ u8 lba_high2;
+};
-// ---------------------------------------------------------------------------
-// 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)
+// Send an ata command to the drive.
+static int
+send_cmd(int driveid, struct ata_pio_command *cmd)
{
- 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);
-
- u8 channel = device / 2;
- u8 slave = device % 2;
-
- u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2);
- u8 mode = GET_EBDA(ata.devices[device].mode);
-
- // 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;
+ u8 channel = driveid / 2;
+ u8 slave = driveid % 2;
+ u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
+ u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+ // Disable interrupts
outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC);
- // 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
+ 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;
}
- 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);
+ 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);
- await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
- status = inb(iobase1 + ATA_CB_STAT);
+ status = ndelay_await_not_bsy(iobase1);
+ 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 (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", status);
+ return -5;
}
- // FIXME : move seg/off translation here
+ return 0;
+}
- irq_enable();
- while (1) {
+/****************************************************************
+ * ATA transfers
+ ****************************************************************/
- if (offset > 0xf800) {
- offset -= 0x800;
- segment += 0x80;
+// Read and discard x number of bytes from an io channel.
+static void
+insx_discard(int iobase1, int bytes)
+{
+ int count, i;
+ if (CONFIG_ATA_PIO32) {
+ count = bytes / 4;
+ for (i=0; i<count; i++)
+ inl(iobase1);
+ } else {
+ count = bytes / 2;
+ for (i=0; i<count; i++)
+ inw(iobase1);
+ }
+}
+
+// Transfer 'count' blocks (of 'blocksize' bytes) to/from drive
+// 'driveid'. If 'skipfirst' or 'skiplast' is set then the first
+// and/or last block may be partially transferred. This function is
+// inlined because all the callers use different forms and because the
+// large number of parameters would consume a lot of stack space.
+static __always_inline int
+ata_transfer(int driveid, int iswrite, int count, int blocksize
+ , int skipfirst, int skiplast, void *buf_fl)
+{
+ dprintf(16, "ata_transfer id=%d write=%d count=%d bs=%d"
+ " skipf=%d skipl=%d buf=%p\n"
+ , driveid, iswrite, count, blocksize
+ , skipfirst, skiplast, buf_fl);
+
+ // Reset count of transferred data
+ SET_EBDA(sector_count, 0);
+
+ u8 channel = driveid / 2;
+ u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
+ u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+ int current = 0;
+ int status;
+ for (;;) {
+ int bsize = blocksize;
+ if (skipfirst && current == 0) {
+ insx_discard(iobase1, skipfirst);
+ bsize -= skipfirst;
+ }
+ if (skiplast && current == count-1)
+ bsize -= skiplast;
+
+ if (iswrite) {
+ // Write data to controller
+ dprintf(16, "Write sector id=%d dest=%p\n", driveid, buf_fl);
+ if (CONFIG_ATA_PIO32)
+ outsl_fl(iobase1, buf_fl, bsize / 4);
+ else
+ outsw_fl(iobase1, buf_fl, bsize / 2);
+ } else {
+ // Read data from controller
+ dprintf(16, "Read sector id=%d dest=%p\n", driveid, buf_fl);
+ if (CONFIG_ATA_PIO32)
+ insl_fl(iobase1, buf_fl, bsize / 4);
+ else
+ insw_fl(iobase1, buf_fl, bsize / 2);
}
+ buf_fl += bsize;
- if (mode == ATA_MODE_PIO32)
- insl(iobase1, segment, offset, 512 / 4);
- else
- insw(iobase1, segment, offset, 512 / 2);
- offset += 512;
+ if (skiplast && current == count-1)
+ insx_discard(iobase1, skiplast);
+
+ status = pause_await_not_bsy(iobase1, iobase2);
+ 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;
+ status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR);
+ if (status != ATA_CB_STAT_DRQ) {
+ dprintf(6, "ata_transfer : more sectors left (status %02x)\n"
+ , status);
+ return -6;
}
- 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_DF | ATA_CB_STAT_DRQ
+ | ATA_CB_STAT_ERR);
+ if (!iswrite)
+ status &= ~ATA_CB_STAT_DF;
+ if (status != 0) {
+ dprintf(6, "ata_transfer : no sectors left (status %02x)\n", 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->buf_fl);
+}
- 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->buf_fl);
+}
- 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->buf_fl);
+ 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 int
+send_cmd_disk(const struct disk_op_s *op)
+{
+ 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 = ((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.
+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 int
+send_atapi_cmd(int driveid, u8 *cmdbuf, u8 cmdlen, u16 blocksize)
+{
+ u8 channel = driveid / 2;
+ u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
+ u16 iobase2 = GET_GLOBAL(ATA.channels[channel].iobase2);
+
+ 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 = 0;
+ 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_fl(iobase1, MAKE_FLATPTR(GET_SEG(SS), cmdbuf), cmdlen / 2);
- if (mode == ATA_MODE_PIO32)
- outsl(iobase1, segment, offset, 512 / 4);
- else
- outsw(iobase1, segment, offset, 512 / 2);
- offset += 512;
+ int status = pause_await_not_bsy(iobase1, iobase2);
+ 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;
- }
+ 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);
+ return -2;
}
- // Enable interrupts
- outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
+ if (!(status & ATA_CB_STAT_DRQ)) {
+ dprintf(6, "send_atapi_cmd : DRQ not set (status %02x)\n", status);
+ return -3;
+ }
+
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;
- }
-
- // The header length must be even
- if (header & 1) {
- DEBUGF("ata_cmd_packet : header must be even (%04x)\n", header);
- return 1;
- }
+ u8 atacmd[12];
+ memset(atacmd, 0, sizeof(atacmd));
- iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- iobase2 = GET_EBDA(ata.channels[channel].iobase2);
- mode = GET_EBDA(ata.devices[device].mode);
- transfer= 0L;
+ 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);
- if (cmdlen < 12)
- cmdlen=12;
- if (cmdlen > 12)
- cmdlen=16;
- cmdlen>>=1;
+ return send_atapi_cmd(op->driveid, atacmd, sizeof(atacmd)
+ , CDROM_SECTOR_SIZE);
+}
- // Reset count of transferred data
- SET_EBDA(ata.trsfsectors,0);
- SET_EBDA(ata.trsfbytes,0L);
+// Read sectors from the cdrom.
+int
+cdrom_read(struct disk_op_s *op)
+{
+ int ret = send_cmd_cdrom(op);
+ if (ret)
+ return ret;
- status = inb(iobase1 + ATA_CB_STAT);
- if (status & ATA_CB_STAT_BSY)
- return 2;
+ return ata_transfer_cdrom(op);
+}
- 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);
+// Pretend the cdrom has 512 byte sectors (instead of 2048) and read
+// sectors.
+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->buf_fl, lba, elba
+ , op->count, before, after);
+
+ int ret = send_cmd_cdrom(op);
+ if (ret)
+ return ret;
+
+ return ata_transfer_cdemu(op, before, after);
+}
- 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;
- }
+// Send a simple atapi command to a drive.
+int
+ata_cmd_packet(int driveid, u8 *cmdbuf, u8 cmdlen
+ , u32 length, void *buf_fl)
+{
+ int ret = send_atapi_cmd(driveid, cmdbuf, cmdlen, length);
+ if (ret)
+ return ret;
- // Send command to device
- irq_enable();
+ return ata_transfer(driveid, 0, 1, length, 0, 0, buf_fl);
+}
- outsw(iobase1, GET_SEG(SS), (u32)cmdbuf, cmdlen);
- 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;
+/****************************************************************
+ * Disk geometry translation
+ ****************************************************************/
- if (status & ATA_CB_STAT_ERR) {
- DEBUGF("ata_cmd_packet : error (status %02x)\n", status);
- return 3;
- }
+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;
+ }
- // 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;
- }
+ // 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 (lcount > length) {
- lafter=lcount-length;
- lcount=length;
- length=0;
- } else {
- lafter=0;
- length-=lcount;
- }
+ if (cylinders <= 1024 && heads <= 16 && spt <= 63)
+ return ATA_TRANSLATION_NONE;
+ if (cylinders * heads <= 131072)
+ return ATA_TRANSLATION_LARGE;
+ return ATA_TRANSLATION_LBA;
+}
- // 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;
- }
- }
+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);
+}
- 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);
+/****************************************************************
+ * ATA detect and init
+ ****************************************************************/
- if (lmode == ATA_MODE_PIO32)
- insl(iobase1, bufseg, bufoff, lcount);
- else
- insw(iobase1, bufseg, bufoff, lcount);
+// Extract common information from IDENTIFY commands.
+static void
+extract_identify(int driveid, u16 *buffer)
+{
+ dprintf(3, "Identify w0=%x w2=%x\n", buffer[0], buffer[2]);
+
+ // Read model name
+ char *model = ATA.devices[driveid].model;
+ int maxsize = ARRAY_SIZE(ATA.devices[driveid].model);
+ int i;
+ for (i=0; i<maxsize/2; i++) {
+ u16 v = buffer[27+i];
+ model[i*2] = v >> 8;
+ model[i*2+1] = v & 0xff;
+ }
+ model[maxsize-1] = 0x00;
- for (i=0; i<lafter; i++)
- if (lmode == ATA_MODE_PIO32)
- inl(iobase1);
- else
- inw(iobase1);
+ // Trim trailing spaces from model name.
+ for (i=maxsize-2; i>0 && model[i] == 0x20; i--)
+ model[i] = 0x00;
- // Compute new buffer address
- bufoff += count;
+ // Extract ATA/ATAPI version.
+ u16 ataversion = buffer[80];
+ u8 version;
+ for (version=15; version>0; version--)
+ if (ataversion & (1<<version))
+ break;
+ ATA.devices[driveid].version = version;
- // Save transferred bytes count
- transfer += count;
- SET_EBDA(ata.trsfbytes,transfer);
- }
- }
+ // Common flags.
+ SET_GLOBAL(ATA.devices[driveid].removable, (buffer[0] & 0x80) ? 1 : 0);
+}
- // 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 int
+init_drive_atapi(int driveid, u16 *buffer)
+{
+ // Send an IDENTIFY_DEVICE_PACKET command to device
+ memset(buffer, 0, IDE_SECTOR_SIZE);
+ struct disk_op_s dop;
+ dop.driveid = driveid;
+ dop.command = ATA_CMD_IDENTIFY_DEVICE_PACKET;
+ dop.count = 1;
+ dop.lba = 1;
+ dop.buf_fl = MAKE_FLATPTR(GET_SEG(SS), buffer);
+ int ret = ata_cmd_data(&dop);
+ if (ret)
+ return ret;
+
+ // Success - setup as ATAPI.
+ extract_identify(driveid, buffer);
+ SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATAPI);
+ SET_GLOBAL(ATA.devices[driveid].device, (buffer[0] >> 8) & 0x1f);
+ SET_GLOBAL(ATA.devices[driveid].blksize, CDROM_SECTOR_SIZE);
+
+ // fill cdidmap
+ u8 cdcount = GET_GLOBAL(ATA.cdcount);
+ SET_GLOBAL(ATA.idmap[1][cdcount], driveid);
+ SET_GLOBAL(ATA.cdcount, cdcount+1);
+
+ // Report drive info to user.
+ u8 channel = driveid / 2;
+ u8 slave = driveid % 2;
+ printf("ata%d-%d: %s ATAPI-%d %s\n", channel, slave
+ , ATA.devices[driveid].model, ATA.devices[driveid].version
+ , (ATA.devices[driveid].device == ATA_DEVICE_CDROM
+ ? "CD-Rom/DVD-Rom" : "Device"));
- // Enable interrupts
- outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
return 0;
}
-u16
-cdrom_read(u16 device, u32 lba, u32 count, u16 segment, u16 offset, u16 skip)
+static int
+init_drive_ata(int driveid, u16 *buffer)
{
- u16 sectors = (count + 2048 - 1) / 2048;
+ // Send an IDENTIFY_DEVICE command to device
+ memset(buffer, 0, IDE_SECTOR_SIZE);
+ struct disk_op_s dop;
+ dop.driveid = driveid;
+ dop.command = ATA_CMD_IDENTIFY_DEVICE;
+ dop.count = 1;
+ dop.lba = 1;
+ dop.buf_fl = MAKE_FLATPTR(GET_SEG(SS), buffer);
+ int ret = ata_cmd_data(&dop);
+ if (ret)
+ return ret;
+
+ // Success - setup as ATA.
+ extract_identify(driveid, buffer);
+ SET_GLOBAL(ATA.devices[driveid].type, ATA_TYPE_ATA);
+ SET_GLOBAL(ATA.devices[driveid].device, ATA_DEVICE_HD);
+ SET_GLOBAL(ATA.devices[driveid].blksize, IDE_SECTOR_SIZE);
+
+ SET_GLOBAL(ATA.devices[driveid].pchs.cylinders, buffer[1]);
+ SET_GLOBAL(ATA.devices[driveid].pchs.heads, buffer[3]);
+ SET_GLOBAL(ATA.devices[driveid].pchs.spt, buffer[6]);
+
+ u64 sectors;
+ if (buffer[83] & (1 << 10)) // word 83 - lba48 support
+ sectors = *(u64*)&buffer[100]; // word 100-103
+ else
+ sectors = *(u32*)&buffer[60]; // word 60 and word 61
+ SET_GLOBAL(ATA.devices[driveid].sectors, sectors);
+
+ // Setup disk geometry translation.
+ setup_translation(driveid);
+
+ // Report drive info to user.
+ u8 channel = driveid / 2;
+ u8 slave = driveid % 2;
+ char *model = ATA.devices[driveid].model;
+ printf("ata%d-%d: %s ATA-%d Hard-Disk ", channel, slave, model
+ , ATA.devices[driveid].version);
+ u64 sizeinmb = sectors >> 11;
+ if (sizeinmb < (1 << 16))
+ printf("(%u MiBytes)\n", (u32)sizeinmb);
+ else
+ printf("(%u GiBytes)\n", (u32)(sizeinmb >> 10));
+
+ // Register with bcv system.
+ add_bcv_hd(driveid, model);
- 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);
+ return 0;
}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : device detection
-// ---------------------------------------------------------------------------
+static int
+powerup_await_non_bsy(u16 base, u64 end)
+{
+ 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(1, "powerup IDE floating\n");
+ return orstatus;
+ }
+ if (rdtscll() > end) {
+ dprintf(1, "powerup IDE time out\n");
+ return -1;
+ }
+ }
+ dprintf(6, "powerup iobase=%x st=%x\n", base, status);
+ return status;
+}
-void
+static void
ata_detect()
{
- u8 hdcount, cdcount, device, type;
- u8 buffer[0x0200];
- memset(buffer, 0, sizeof(buffer));
-
-#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
-
// Device detection
- hdcount=cdcount=0;
-
- for(device=0; device<CONFIG_MAX_ATA_DEVICES; device++) {
- u16 iobase1, iobase2;
- u8 channel, slave, shift;
- u8 sc, sn, cl, ch, st;
-
- channel = device / 2;
- slave = device % 2;
-
- iobase1 =GET_EBDA(ata.channels[channel].iobase1);
- iobase2 =GET_EBDA(ata.channels[channel].iobase2);
+ u64 end = calc_future_tsc(IDE_TIMEOUT);
+ int driveid, last_reset_driveid=-1;
+ for(driveid=0; driveid<CONFIG_MAX_ATA_DEVICES; driveid++) {
+ u8 channel = driveid / 2;
+ u8 slave = driveid % 2;
+
+ u16 iobase1 = GET_GLOBAL(ATA.channels[channel].iobase1);
+ if (!iobase1)
+ break;
- // Disable interrupts
- outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2+ATA_CB_DC);
+ // Wait for not-bsy.
+ int status = powerup_await_non_bsy(iobase1, end);
+ 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, end);
+ if (status < 0)
+ continue;
- // Look for device
- outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1+ATA_CB_DH);
- 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);
+ u8 sc = inb(iobase1+ATA_CB_SC);
+ u8 sn = inb(iobase1+ATA_CB_SN);
+ dprintf(6, "ata_detect drive=%d sc=%x sn=%x dh=%x\n"
+ , driveid, sc, sn, dh);
+ if (sc != 0x55 || sn != 0xaa || dh != newdh)
+ continue;
- // 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);
- }
- }
+ // reset the channel
+ if (slave && driveid == last_reset_driveid + 1) {
+ // The drive was just reset - no need to reset it again.
+ } else {
+ ata_reset(driveid);
+ last_reset_driveid = driveid;
}
- 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);
+ // check for ATAPI
+ u16 buffer[256];
+ int ret = init_drive_atapi(driveid, buffer);
+ if (!ret) {
+ // Found an ATAPI drive.
+ } else {
+ u8 st = inb(iobase1+ATA_CB_STAT);
+ if (!st)
+ // Status not set - can't be a valid drive.
+ continue;
+
+ // Wait for RDY.
+ ret = await_rdy(iobase1);
+ if (ret < 0)
+ continue;
+
+ // check for ATA.
+ ret = init_drive_ata(driveid, buffer);
if (ret)
- 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++;
+ // No ATA drive found
+ continue;
}
- // Now we send a IDENTIFY command to ATAPI device
- if(type == ATA_TYPE_ATAPI) {
+ 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.
+ driveid++;
+ }
- u8 type, removable, mode;
- u16 blksize;
+ printf("\n");
+}
+
+static void
+ata_init()
+{
+ memset(&ATA, 0, sizeof(ATA));
- //Temporary values to do the transfer
- SET_EBDA(ata.devices[device].device,ATA_DEVICE_CDROM);
- SET_EBDA(ata.devices[device].mode, ATA_MODE_PIO16);
+ // 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);
+ }
- 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");
+ // Scan PCI bus for ATA adapters
+ int count=0;
+ int bdf, max;
+ foreachpci(bdf, max) {
+ if (pci_config_readw(bdf, PCI_CLASS_DEVICE) != PCI_CLASS_STORAGE_IDE)
+ continue;
+ if (count >= ARRAY_SIZE(ATA.channels))
+ break;
- type = buffer[1] & 0x1f;
- removable = (buffer[0] & 0x80) ? 1 : 0;
- mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
- blksize = 2048;
+ u8 irq = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
+ SET_GLOBAL(ATA.channels[count].irq, irq);
+ SET_GLOBAL(ATA.channels[count].pci_bdf, bdf);
- SET_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 prog_if = pci_config_readb(bdf, PCI_CLASS_PROG);
+ u32 port1, port2;
- // fill cdidmap
- SET_EBDA(ata.idmap[1][cdcount], device);
- cdcount++;
+ 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++;
+ }
+}
- 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;
- }
+void
+hard_drive_setup()
+{
+ if (!CONFIG_ATA)
+ return;
- // 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];
- }
+ dprintf(3, "init hard drives\n");
+ ata_init();
+ ata_detect();
- // Reformat
- model[40] = 0x00;
- for (i=39;i>0;i--) {
- if (model[i]==0x20)
- model[i] = 0x00;
- else
- break;
- }
- break;
- }
+ SET_BDA(disk_control_byte, 0xc0);
- 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;
- }
- }
+ enable_hwirq(14, entry_76);
+}
- // Store the devices counts
- SET_EBDA(ata.hdcount, hdcount);
- SET_EBDA(ata.cdcount, cdcount);
- SET_BDA(disk_count, hdcount);
- printf("\n");
+/****************************************************************
+ * Drive mapping
+ ****************************************************************/
- // FIXME : should use bios=cmos|auto|disable bits
- // FIXME : should know about translation bits
- // FIXME : move hard_drive_post here
+// Fill in Fixed Disk Parameter Table (located in ebda).
+static void
+fill_fdpt(int driveid)
+{
+ if (driveid > 1)
+ return;
+
+ u16 nlc = GET_GLOBAL(ATA.devices[driveid].lchs.cylinders);
+ u16 nlh = GET_GLOBAL(ATA.devices[driveid].lchs.heads);
+ u16 nlspt = GET_GLOBAL(ATA.devices[driveid].lchs.spt);
+
+ u16 npc = GET_GLOBAL(ATA.devices[driveid].pchs.cylinders);
+ u16 nph = GET_GLOBAL(ATA.devices[driveid].pchs.heads);
+ u16 npspt = GET_GLOBAL(ATA.devices[driveid].pchs.spt);
+
+ struct fdpt_s *fdpt = &get_ebda_ptr()->fdpt[driveid];
+ fdpt->precompensation = 0xffff;
+ fdpt->drive_control_byte = 0xc0 | ((nph > 8) << 3);
+ fdpt->landing_zone = npc;
+ fdpt->cylinders = nlc;
+ fdpt->heads = nlh;
+ fdpt->sectors = nlspt;
+
+ if (nlc == npc && nlh == nph && nlspt == npspt)
+ // no logical CHS mapping used, just physical CHS
+ // use Standard Fixed Disk Parameter Table (FDPT)
+ return;
+
+ // complies with Phoenix style Translated Fixed Disk Parameter
+ // Table (FDPT)
+ fdpt->phys_cylinders = npc;
+ fdpt->phys_heads = nph;
+ fdpt->phys_sectors = npspt;
+ fdpt->a0h_signature = 0xa0;
+
+ // Checksum structure.
+ u8 sum = checksum(fdpt, sizeof(*fdpt)-1);
+ fdpt->checksum = -sum;
+}
+
+// Map a drive (that was registered via add_bcv_hd)
+void
+map_drive(int driveid)
+{
+ // fill hdidmap
+ u8 hdcount = GET_BDA(hdcount);
+ dprintf(3, "Mapping driveid %d to %d\n", driveid, hdcount);
+ SET_GLOBAL(ATA.idmap[0][hdcount], driveid);
+ SET_BDA(hdcount, hdcount + 1);
+
+ // Fill "fdpt" structure.
+ fill_fdpt(hdcount);
}