// 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);
+
+ dprintf(6, "ata_reset exit status=%x\n", status);
}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : execute a data 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
+/****************************************************************
+ * ATA send command
+ ****************************************************************/
struct ata_pio_command {
- void *far_buffer;
- u8 biosid;
-
u8 feature;
u8 sector_count;
u8 lba_low;
u8 lba_high2;
};
+// Send an ata command to the drive.
static int
-send_cmd(struct ata_pio_command *cmd)
+send_cmd(int driveid, struct ata_pio_command *cmd)
{
- u16 biosid = cmd->biosid;
- u8 channel = biosid / 2;
- u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2);
-
- 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);
+
+ // 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;
+ }
+
if (cmd->command & 0x04) {
outb(0x00, iobase1 + ATA_CB_FR);
outb(cmd->sector_count2, 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->device, iobase1 + ATA_CB_DH);
outb(cmd->command, iobase1 + ATA_CB_CMD);
- await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT);
+ status = ndelay_await_not_bsy(iobase1);
+ if (status < 0)
+ return status;
- status = inb(iobase1 + ATA_CB_STAT);
if (status & ATA_CB_STAT_ERR) {
- DEBUGF("send_cmd : read error\n");
- return 2;
+ 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)) {
- DEBUGF("send_cmd : DRQ not set (status %02x)\n"
- , (unsigned) status);
- return 3;
+ dprintf(6, "send_cmd : DRQ not set (status %02x)\n", status);
+ return -5;
}
return 0;
}
-static int
-ata_transfer(struct ata_pio_command *cmd)
+
+/****************************************************************
+ * ATA transfers
+ ****************************************************************/
+
+// Read and discard x number of bytes from an io channel.
+static void
+insx_discard(int iobase1, int bytes)
{
- DEBUGF("ata_transfer id=%d cmd=%d lba=%d count=%d buf=%p\n"
- , cmd->biosid, cmd->command
- , (cmd->lba_high << 16) | (cmd->lba_mid << 8) | cmd->lba_low
- , cmd->sector_count, cmd->far_buffer);
+ 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);
+ }
+}
- // Reset count of transferred data
- SET_EBDA(ata.trsfsectors,0);
- SET_EBDA(ata.trsfbytes,0L);
+// 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);
- int ret = send_cmd(cmd);
- if (ret)
- return ret;
+ // Reset count of transferred data
+ SET_EBDA(sector_count, 0);
- u16 biosid = cmd->biosid;
- u8 channel = biosid / 2;
- u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2);
- u8 mode = GET_EBDA(ata.devices[biosid].mode);
- int iswrite = (cmd->command & ~0x40) == ATA_CMD_WRITE_SECTORS;
- u8 current = 0;
- u16 count = cmd->sector_count;
- u8 status;
- void *far_buffer = cmd->far_buffer;
+ 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
- DEBUGF("Write sector id=%d dest=%p\n", biosid, far_buffer);
- if (mode == ATA_MODE_PIO32)
- outsl_far(iobase1, far_buffer, 512 / 4);
+ 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_far(iobase1, far_buffer, 512 / 2);
+ outsw_fl(iobase1, buf_fl, bsize / 2);
} else {
// Read data from controller
- DEBUGF("Read sector id=%d dest=%p\n", biosid, far_buffer);
- if (mode == ATA_MODE_PIO32)
- insl_far(iobase1, far_buffer, 512 / 4);
+ 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_far(iobase1, far_buffer, 512 / 2);
- await_ide(NOT_BSY, iobase1, IDE_TIMEOUT);
+ insw_fl(iobase1, buf_fl, bsize / 2);
}
- far_buffer += 512;
+ buf_fl += bsize;
+
+ 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--;
- status = inb(iobase1 + ATA_CB_STAT);
- if (count == 0)
+ SET_EBDA(sector_count, current);
+ if (current == count)
break;
- status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ
- | ATA_CB_STAT_ERR);
- if (status != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ)) {
- DEBUGF("ata_transfer : more sectors left (status %02x)\n"
- , (unsigned) status);
- return 5;
+ 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;
}
}
- status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DF
- | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR);
+ status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_DF | ATA_CB_STAT_DRQ
+ | ATA_CB_STAT_ERR);
if (!iswrite)
status &= ~ATA_CB_STAT_DF;
- if (status != ATA_CB_STAT_RDY ) {
- DEBUGF("ata_transfer : no sectors left (status %02x)\n"
- , (unsigned) status);
- return 4;
+ if (status != 0) {
+ dprintf(6, "ata_transfer : no sectors left (status %02x)\n", status);
+ return -7;
}
// Enable interrupts
return 0;
}
-inline int
-ata_cmd_data(u16 biosid, u16 command, u32 lba, u16 count, void *far_buffer)
+static noinline int
+ata_transfer_disk(const struct disk_op_s *op)
+{
+ return ata_transfer(op->driveid, op->command == ATA_CMD_WRITE_SECTORS
+ , op->count, IDE_SECTOR_SIZE, 0, 0, op->buf_fl);
+}
+
+static noinline int
+ata_transfer_cdrom(const struct disk_op_s *op)
+{
+ return ata_transfer(op->driveid, 0, op->count, CDROM_SECTOR_SIZE
+ , 0, 0, op->buf_fl);
+}
+
+static noinline int
+ata_transfer_cdemu(const struct disk_op_s *op, int before, int after)
+{
+ int vcount = op->count * 4 - before - after;
+ int ret = ata_transfer(op->driveid, 0, op->count, CDROM_SECTOR_SIZE
+ , before*512, after*512, op->buf_fl);
+ if (ret) {
+ SET_EBDA(sector_count, 0);
+ return ret;
+ }
+ SET_EBDA(sector_count, vcount);
+ return 0;
+}
+
+
+/****************************************************************
+ * ATA hard drive functions
+ ****************************************************************/
+
+static int
+send_cmd_disk(const struct disk_op_s *op)
{
- u8 slave = biosid % 2;
+ u64 lba = op->lba;
struct ata_pio_command cmd;
- cmd.far_buffer = far_buffer;
- cmd.biosid = biosid;
+ memset(&cmd, 0, sizeof(cmd));
- if (count >= (1<<8) || lba + count >= (1<<28)) {
- cmd.sector_count2 = count >> 8;
+ 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 = 0;
- cmd.lba_high2 = 0;
+ cmd.lba_mid2 = lba >> 32;
+ cmd.lba_high2 = lba >> 40;
- command |= 0x04;
+ cmd.command |= 0x04;
lba &= 0xffffff;
}
cmd.feature = 0;
- cmd.sector_count = count;
+ cmd.sector_count = op->count;
cmd.lba_low = lba;
cmd.lba_mid = lba >> 8;
cmd.lba_high = lba >> 16;
- cmd.device = ((slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0)
- | ((lba >> 24) & 0xf) | ATA_CB_DH_LBA);
- cmd.command = command;
- return ata_transfer(&cmd);
+ cmd.device = ((lba >> 24) & 0xf) | ATA_CB_DH_LBA;
+
+ return send_cmd(op->driveid, &cmd);
}
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : execute a packet command
-// ---------------------------------------------------------------------------
- // returns
- // 0 : no error
- // 1 : error in parameters
- // 2 : BUSY bit set
- // 3 : error
- // 4 : not ready
-static inline int
-__ata_cmd_packet(u16 biosid, u8 *cmdbuf, u8 cmdlen
- , u16 header, u32 length, void *far_buffer)
+// Read/write count blocks from a harddrive.
+int
+ata_cmd_data(struct disk_op_s *op)
{
- DEBUGF("ata_cmd_packet d=%d cmdlen=%d h=%d l=%d buf=%p\n"
- , biosid, cmdlen, header, length, far_buffer);
+ int ret = send_cmd_disk(op);
+ if (ret)
+ return ret;
+ return ata_transfer_disk(op);
+}
- u8 channel = biosid / 2;
- u8 slave = biosid % 2;
- // The header length must be even
- if (header & 1) {
- DEBUGF("ata_cmd_packet : header must be even (%04x)\n", header);
- return 1;
- }
+/****************************************************************
+ * ATAPI functions
+ ****************************************************************/
- u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2);
- u8 mode = GET_EBDA(ata.devices[biosid].mode);
+// 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 = 0xf0;
- cmd.lba_high = 0xff;
- cmd.device = slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0;
+ cmd.lba_mid = blocksize;
+ cmd.lba_high = blocksize >> 8;
+ cmd.device = 0;
cmd.command = ATA_CMD_PACKET;
- cmd.biosid = biosid;
- int ret = send_cmd(&cmd);
+ int ret = send_cmd(driveid, &cmd);
if (ret)
return ret;
- // Reset count of transferred data
- SET_EBDA(ata.trsfsectors,0);
- SET_EBDA(ata.trsfbytes,0L);
-
// Send command to device
- outsw_far(iobase1, MAKE_FARPTR(GET_SEG(SS), (u32)cmdbuf), cmdlen / 2);
-
- u8 status;
- u16 loops = 0;
- for (;;) {
- 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);
- 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;
+ outsw_fl(iobase1, MAKE_FLATPTR(GET_SEG(SS), cmdbuf), cmdlen / 2);
- if (status & ATA_CB_STAT_ERR) {
- DEBUGF("ata_cmd_packet : error (status %02x)\n", status);
- return 3;
- }
-
- // Get the byte count
- u16 lcount = (((u16)(inb(iobase1 + ATA_CB_CH))<<8)
- + inb(iobase1 + ATA_CB_CL));
-
- // adjust to read what we want
- u16 lbefore, lafter;
- 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
- u16 count = lcount;
-
- DEBUGF("Trying to read %04x bytes (%04x %04x %04x) to %p\n"
- , lbefore+lcount+lafter, lbefore, lcount, lafter, far_buffer);
-
- // If counts not dividable by 4, use 16bits mode
- u8 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_far(iobase1, far_buffer, lcount);
- else
- insw_far(iobase1, far_buffer, lcount);
-
- for (i=0; i<lafter; i++)
- if (lmode == ATA_MODE_PIO32)
- inl(iobase1);
- else
- inw(iobase1);
-
- // Compute new buffer address
- far_buffer += count;
+ int status = pause_await_not_bsy(iobase1, iobase2);
+ if (status < 0)
+ return status;
- // Save transferred bytes count
- SET_EBDA(ata.trsfsectors, loops);
+ 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;
}
-
- // 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;
+ if (!(status & ATA_CB_STAT_DRQ)) {
+ dprintf(6, "send_atapi_cmd : DRQ not set (status %02x)\n", status);
+ return -3;
}
- // Enable interrupts
- outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC);
return 0;
}
-int
-ata_cmd_packet(u16 biosid, u8 *cmdbuf, u8 cmdlen
- , u32 length, void *far_buffer)
-{
- return __ata_cmd_packet(biosid, cmdbuf, cmdlen, 0, length, far_buffer);
-}
-
-static void
-build_cdrom_cmd(u8 *atacmd, u32 lba, u16 count)
+// Low-level cdrom read atapi command transmit function.
+static int
+send_cmd_cdrom(const struct disk_op_s *op)
{
- memset(atacmd, 0, 12);
- atacmd[0]=0x28; // READ command
- atacmd[7]=(count & 0xff00) >> 8; // Sectors
- atacmd[8]=(count & 0x00ff); // Sectors
- atacmd[2]=(lba & 0xff000000) >> 24; // LBA
- atacmd[3]=(lba & 0x00ff0000) >> 16;
- atacmd[4]=(lba & 0x0000ff00) >> 8;
- atacmd[5]=(lba & 0x000000ff);
+ u8 atacmd[12];
+ memset(atacmd, 0, sizeof(atacmd));
+
+ atacmd[0]=0x28; // READ command
+ atacmd[7]=(op->count & 0xff00) >> 8; // Sectors
+ atacmd[8]=(op->count & 0x00ff);
+ atacmd[2]=(op->lba & 0xff000000) >> 24; // LBA
+ atacmd[3]=(op->lba & 0x00ff0000) >> 16;
+ atacmd[4]=(op->lba & 0x0000ff00) >> 8;
+ atacmd[5]=(op->lba & 0x000000ff);
+
+ return send_atapi_cmd(op->driveid, atacmd, sizeof(atacmd)
+ , CDROM_SECTOR_SIZE);
}
// Read sectors from the cdrom.
int
-cdrom_read(u16 biosid, u32 lba, u32 count, void *far_buffer)
+cdrom_read(struct disk_op_s *op)
{
- u8 atacmd[12];
- build_cdrom_cmd(atacmd, lba, count);
- return ata_cmd_packet(biosid, atacmd, sizeof(atacmd)
- , count*2048, far_buffer);
+ int ret = send_cmd_cdrom(op);
+ if (ret)
+ return ret;
+
+ return ata_transfer_cdrom(op);
}
// Pretend the cdrom has 512 byte sectors (instead of 2048) and read
// sectors.
int
-cdrom_read_512(u16 biosid, u32 vlba, u32 count, void *far_buffer)
+cdrom_read_512(struct disk_op_s *op)
{
- u32 slba = vlba / 4;
- u16 before = vlba % 4;
- u32 elba = (vlba + count - 1) / 4;
-
- u8 atacmd[12];
- build_cdrom_cmd(atacmd, slba, elba - slba + 1);
+ 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;
- int status = __ata_cmd_packet(biosid, atacmd, sizeof(atacmd)
- , before*512, count*512, far_buffer);
- if (status) {
- SET_EBDA(ata.trsfsectors, 0);
- return status;
- }
- SET_EBDA(ata.trsfsectors, count);
- return 0;
+ return ata_transfer_cdemu(op, before, after);
}
-
-// ---------------------------------------------------------------------------
-// ATA/ATAPI driver : device detection
-// ---------------------------------------------------------------------------
-
-static void
-report_model(u8 devid, u8 *buffer)
+// Send a simple atapi command to a drive.
+int
+ata_cmd_packet(int driveid, u8 *cmdbuf, u8 cmdlen
+ , u32 length, void *buf_fl)
{
- u8 model[41];
+ int ret = send_atapi_cmd(driveid, cmdbuf, cmdlen, length);
+ if (ret)
+ return ret;
- // Read model name
- int i;
- for (i=0; i<40; i+=2) {
- model[i] = buffer[i+54+1];
- model[i+1] = buffer[i+54];
- }
+ return ata_transfer(driveid, 0, 1, length, 0, 0, buf_fl);
+}
- // Reformat
- model[40] = 0x00;
- for (i=39; i>0; i--) {
- if (model[i] != 0x20)
- break;
- model[i] = 0x00;
- }
- u8 channel = devid / 2;
- u8 slave = devid % 2;
- // XXX - model on stack not %cs
- printf("ata%d %s: %s", channel, slave ? " slave" : "master", model);
-}
+/****************************************************************
+ * Disk geometry translation
+ ****************************************************************/
static u8
-get_ata_version(u8 *buffer)
+get_translation(int driveid)
{
- u16 ataversion = *(u16*)&buffer[160];
- u8 version;
- for (version=15; version>0; version--)
- if (ataversion & (1<<version))
- break;
- return version;
-}
+ 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;
+ }
-static void
-init_drive_atapi(u8 devid)
-{
- SET_EBDA(ata.devices[devid].type,ATA_TYPE_ATAPI);
-
- // Temporary values to do the transfer
- SET_EBDA(ata.devices[devid].device,ATA_DEVICE_CDROM);
- SET_EBDA(ata.devices[devid].mode, ATA_MODE_PIO16);
-
- // Now we send a IDENTIFY command to ATAPI device
- u8 buffer[0x0200];
- memset(buffer, 0, sizeof(buffer));
- u16 ret = ata_cmd_data(devid, ATA_CMD_IDENTIFY_DEVICE_PACKET
- , 1, 1
- , MAKE_FARPTR(GET_SEG(SS), (u32)buffer));
- if (ret != 0)
- BX_PANIC("ata-detect: Failed to detect ATAPI device\n");
-
- u8 type = buffer[1] & 0x1f;
- u8 removable = (buffer[0] & 0x80) ? 1 : 0;
- u8 mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
- u16 blksize = 2048;
-
- SET_EBDA(ata.devices[devid].device, type);
- SET_EBDA(ata.devices[devid].removable, removable);
- SET_EBDA(ata.devices[devid].mode, mode);
- SET_EBDA(ata.devices[devid].blksize, blksize);
+ // 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);
- // fill cdidmap
- u8 cdcount = GET_EBDA(ata.cdcount);
- SET_EBDA(ata.idmap[1][cdcount], devid);
- SET_EBDA(ata.cdcount, ++cdcount);
-
- report_model(devid, buffer);
- u8 version = get_ata_version(buffer);
- if (GET_EBDA(ata.devices[devid].device)==ATA_DEVICE_CDROM)
- printf(" ATAPI-%d CD-Rom/DVD-Rom\n", version);
- else
- printf(" ATAPI-%d Device\n", version);
+ if (cylinders <= 1024 && heads <= 16 && spt <= 63)
+ return ATA_TRANSLATION_NONE;
+ if (cylinders * heads <= 131072)
+ return ATA_TRANSLATION_LARGE;
+ return ATA_TRANSLATION_LBA;
}
static void
-init_drive_ata(u8 devid)
+setup_translation(int driveid)
{
- SET_EBDA(ata.devices[devid].type,ATA_TYPE_ATA);
-
- // Temporary values to do the transfer
- SET_EBDA(ata.devices[devid].device, ATA_DEVICE_HD);
- SET_EBDA(ata.devices[devid].mode, ATA_MODE_PIO16);
-
- // Now we send a IDENTIFY command to ATA device
- u8 buffer[0x0200];
- memset(buffer, 0, sizeof(buffer));
- u16 ret = ata_cmd_data(devid, ATA_CMD_IDENTIFY_DEVICE
- , 1, 1
- , MAKE_FARPTR(GET_SEG(SS), (u32)buffer));
- if (ret)
- BX_PANIC("ata-detect: Failed to detect ATA device\n");
-
- u8 removable = (buffer[0] & 0x80) ? 1 : 0;
- u8 mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16;
- u16 blksize = *(u16*)&buffer[10];
-
- u16 cylinders = *(u16*)&buffer[1*2]; // word 1
- u16 heads = *(u16*)&buffer[3*2]; // word 3
- u16 spt = *(u16*)&buffer[6*2]; // word 6
-
- u32 sectors = *(u32*)&buffer[60*2]; // word 60 and word 61
-
- SET_EBDA(ata.devices[devid].device,ATA_DEVICE_HD);
- SET_EBDA(ata.devices[devid].removable, removable);
- SET_EBDA(ata.devices[devid].mode, mode);
- SET_EBDA(ata.devices[devid].blksize, blksize);
- SET_EBDA(ata.devices[devid].pchs.heads, heads);
- SET_EBDA(ata.devices[devid].pchs.cylinders, cylinders);
- SET_EBDA(ata.devices[devid].pchs.spt, spt);
- SET_EBDA(ata.devices[devid].sectors, sectors);
-
- u8 channel = devid / 2;
- u8 slave = devid % 2;
- u8 translation = inb_cmos(CMOS_BIOS_DISKTRANSFLAG + channel/2);
- u8 shift;
- for (shift=devid%4; shift>0; shift--)
- translation >>= 2;
- translation &= 0x03;
-
- SET_EBDA(ata.devices[devid].translation, translation);
-
- BX_INFO("ata%d-%d: PCHS=%u/%d/%d translation="
+ 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:
- BX_INFO("none");
+ dprintf(1, "none");
break;
case ATA_TRANSLATION_LBA:
- BX_INFO("lba");
+ dprintf(1, "lba");
spt = 63;
- sectors /= 63;
- heads = sectors / 1024;
+ 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 = 32;
else
heads = 16;
- cylinders = sectors / heads;
+ cylinders = sect / heads;
break;
case ATA_TRANSLATION_RECHS:
- BX_INFO("r-echs");
+ dprintf(1, "r-echs");
// Take care not to overflow
if (heads==16) {
if (cylinders>61439)
// then go through the large bitshift process
case ATA_TRANSLATION_LARGE:
if (translation == ATA_TRANSLATION_LARGE)
- BX_INFO("large");
- while(cylinders > 1024) {
+ dprintf(1, "large");
+ while (cylinders > 1024) {
cylinders >>= 1;
heads <<= 1;
// clip to 1024 cylinders in lchs
if (cylinders > 1024)
cylinders = 1024;
- BX_INFO(" LCHS=%d/%d/%d\n", cylinders, heads, spt);
+ dprintf(1, " LCHS=%d/%d/%d\n", cylinders, heads, spt);
- SET_EBDA(ata.devices[devid].lchs.heads, heads);
- SET_EBDA(ata.devices[devid].lchs.cylinders, cylinders);
- SET_EBDA(ata.devices[devid].lchs.spt, 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);
+}
- // fill hdidmap
- u8 hdcount = GET_EBDA(ata.hdcount);
- SET_EBDA(ata.idmap[0][hdcount], devid);
- SET_EBDA(ata.hdcount, ++hdcount);
- u32 sizeinmb = GET_EBDA(ata.devices[devid].sectors);
- sizeinmb >>= 11;
+/****************************************************************
+ * ATA detect and init
+ ****************************************************************/
- report_model(devid, buffer);
- u8 version = get_ata_version(buffer);
+// 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;
+
+ // Trim trailing spaces from model name.
+ for (i=maxsize-2; i>0 && model[i] == 0x20; i--)
+ model[i] = 0x00;
+
+ // Extract ATA/ATAPI version.
+ u16 ataversion = buffer[80];
+ u8 version;
+ for (version=15; version>0; version--)
+ if (ataversion & (1<<version))
+ break;
+ ATA.devices[driveid].version = version;
+
+ // Common flags.
+ SET_GLOBAL(ATA.devices[driveid].removable, (buffer[0] & 0x80) ? 1 : 0);
+}
+
+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"));
+
+ return 0;
+}
+
+static int
+init_drive_ata(int driveid, u16 *buffer)
+{
+ // 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(" ATA-%d Hard-Disk (%u MBytes)\n", version, sizeinmb);
+ printf("(%u MiBytes)\n", (u32)sizeinmb);
else
- printf(" ATA-%d Hard-Disk (%u GBytes)\n", version, sizeinmb >> 10);
+ printf("(%u GiBytes)\n", (u32)(sizeinmb >> 10));
+
+ // Register with bcv system.
+ add_bcv_hd(driveid, model);
+
+ return 0;
}
-static void
-init_drive_unknown(u8 devid)
+static int
+powerup_await_non_bsy(u16 base, u64 end)
{
- SET_EBDA(ata.devices[devid].type,ATA_TYPE_UNKNOWN);
-
- u8 channel = devid / 2;
- u8 slave = devid % 2;
- printf("ata%d %s: Unknown device\n", channel, slave ? " slave" : "master");
+ 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()
{
-#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
- u8 devid;
- for(devid=0; devid<CONFIG_MAX_ATA_DEVICES; devid++) {
- u8 channel = devid / 2;
- u8 slave = devid % 2;
-
- u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
- u16 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);
-
- // If we found something
u8 sc = inb(iobase1+ATA_CB_SC);
u8 sn = inb(iobase1+ATA_CB_SN);
-
- if (sc != 0x55 || sn != 0xaa)
+ 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;
// reset the channel
- ata_reset(devid);
-
- // 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) {
- init_drive_unknown(devid);
- continue;
+ 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;
}
- u8 cl = inb(iobase1+ATA_CB_CL);
- u8 ch = inb(iobase1+ATA_CB_CH);
- u8 st = inb(iobase1+ATA_CB_STAT);
-
- if (cl==0x14 && ch==0xeb)
- init_drive_atapi(devid);
- else if (cl==0x00 && ch==0x00 && st!=0x00)
- init_drive_ata(devid);
- else if (cl==0xff && ch==0xff)
- // None
+
+ // 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)
+ // No ATA drive found
+ continue;
+ }
+
+ u16 resetresult = buffer[93];
+ dprintf(6, "ata_detect resetresult=%04x\n", resetresult);
+ if (!slave && (resetresult & 0xdf61) == 0x4041)
+ // resetresult looks valid and device 0 is responding to
+ // device 1 requests - device 1 must not be present - skip
+ // detection.
+ driveid++;
+ }
+
+ printf("\n");
+}
+
+static void
+ata_init()
+{
+ memset(&ATA, 0, sizeof(ATA));
+
+ // hdidmap and cdidmap init.
+ u8 device;
+ for (device=0; device < CONFIG_MAX_ATA_DEVICES; device++) {
+ SET_GLOBAL(ATA.idmap[0][device], CONFIG_MAX_ATA_DEVICES);
+ SET_GLOBAL(ATA.idmap[1][device], CONFIG_MAX_ATA_DEVICES);
+ }
+
+ // Scan PCI bus for ATA adapters
+ int count=0;
+ int bdf, max;
+ foreachpci(bdf, max) {
+ if (pci_config_readw(bdf, PCI_CLASS_DEVICE) != PCI_CLASS_STORAGE_IDE)
continue;
- else
- init_drive_unknown(devid);
+ if (count >= ARRAY_SIZE(ATA.channels))
+ break;
+
+ u8 irq = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
+ SET_GLOBAL(ATA.channels[count].irq, irq);
+ SET_GLOBAL(ATA.channels[count].pci_bdf, bdf);
+
+ u8 prog_if = pci_config_readb(bdf, PCI_CLASS_PROG);
+ u32 port1, port2;
+
+ 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++;
}
+}
- // Store the device count
- SET_BDA(disk_count, GET_EBDA(ata.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);
+
+ enable_hwirq(14, entry_76);
+}
+
+
+/****************************************************************
+ * Drive mapping
+ ****************************************************************/
+
+// Fill in Fixed Disk Parameter Table (located in ebda).
+static void
+fill_fdpt(int driveid)
+{
+ if (driveid > 1)
+ return;
+
+ u16 nlc = GET_GLOBAL(ATA.devices[driveid].lchs.cylinders);
+ u16 nlh = GET_GLOBAL(ATA.devices[driveid].lchs.heads);
+ u16 nlspt = GET_GLOBAL(ATA.devices[driveid].lchs.spt);
+
+ u16 npc = GET_GLOBAL(ATA.devices[driveid].pchs.cylinders);
+ u16 nph = GET_GLOBAL(ATA.devices[driveid].pchs.heads);
+ u16 npspt = GET_GLOBAL(ATA.devices[driveid].pchs.spt);
+
+ struct fdpt_s *fdpt = &get_ebda_ptr()->fdpt[driveid];
+ fdpt->precompensation = 0xffff;
+ fdpt->drive_control_byte = 0xc0 | ((nph > 8) << 3);
+ fdpt->landing_zone = npc;
+ fdpt->cylinders = nlc;
+ fdpt->heads = nlh;
+ fdpt->sectors = nlspt;
+
+ if (nlc == npc && nlh == nph && nlspt == npspt)
+ // no logical CHS mapping used, just physical CHS
+ // use Standard Fixed Disk Parameter Table (FDPT)
+ return;
+
+ // complies with Phoenix style Translated Fixed Disk Parameter
+ // Table (FDPT)
+ fdpt->phys_cylinders = npc;
+ fdpt->phys_heads = nph;
+ fdpt->phys_sectors = npspt;
+ fdpt->a0h_signature = 0xa0;
+
+ // Checksum structure.
+ u8 sum = checksum(fdpt, sizeof(*fdpt)-1);
+ fdpt->checksum = -sum;
+}
+
+// Map a drive (that was registered via add_bcv_hd)
+void
+map_drive(int driveid)
+{
+ // fill hdidmap
+ u8 hdcount = GET_BDA(hdcount);
+ dprintf(3, "Mapping driveid %d to %d\n", driveid, hdcount);
+ SET_GLOBAL(ATA.idmap[0][hdcount], driveid);
+ SET_BDA(hdcount, hdcount + 1);
- // FIXME : should use bios=cmos|auto|disable bits
- // FIXME : should know about translation bits
- // FIXME : move hard_drive_post here
+ // Fill "fdpt" structure.
+ fill_fdpt(hdcount);
}
projects / seabios.git / blobdiff