grub/disk/scsi.c

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/* scsi.c - scsi support. */
/*
* GRUB -- GRand Unified Bootloader
2010-01-03 Robert Millan <rmh.grub@aybabtu.com> * boot/i386/pc/boot.S: Update copyright year. * boot/i386/pc/cdboot.S: Likewise. * boot/i386/pc/diskboot.S: Likewise. * boot/i386/pc/lnxboot.S: Likewise. * boot/i386/pc/pxeboot.S: Likewise. * bus/pci.c: Likewise. * commands/cmp.c: Likewise. * commands/help.c: Likewise. * commands/hexdump.c: Likewise. * commands/i386/pc/halt.c: Likewise. * commands/i386/pc/play.c: Likewise. * commands/i386/pc/vbeinfo.c: Likewise. * commands/ls.c: Likewise. * commands/test.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/i386/pc/biosdisk.c: Likewise. * disk/ieee1275/nand.c: Likewise. * disk/ieee1275/ofdisk.c: Likewise. * disk/lvm.c: Likewise. * disk/raid.c: Likewise. * disk/raid6_recover.c: Likewise. * disk/scsi.c: Likewise. * fs/affs.c: Likewise. * fs/cpio.c: Likewise. * fs/ext2.c: Likewise. * fs/hfs.c: Likewise. * fs/iso9660.c: Likewise. * fs/ntfs.c: Likewise. * fs/sfs.c: Likewise. * fs/udf.c: Likewise. * fs/ufs.c: Likewise. * fs/xfs.c: Likewise. * gencmdlist.sh: Likewise. * genmk.rb: Likewise. * include/grub/disk.h: Likewise. * include/grub/efi/api.h: Likewise. * include/grub/efi/efi.h: Likewise. * include/grub/efi/pe32.h: Likewise. * include/grub/elf.h: Likewise. * include/grub/fs.h: Likewise. * include/grub/i386/at_keyboard.h: Likewise. * include/grub/i386/pc/memory.h: Likewise. * include/grub/i386/pc/vbe.h: Likewise. * include/grub/i386/pci.h: Likewise. * include/grub/i386/tsc.h: Likewise. * include/grub/ieee1275/ieee1275.h: Likewise. * include/grub/ntfs.h: Likewise. * include/grub/sparc64/ieee1275/ieee1275.h: Likewise. * include/grub/sparc64/libgcc.h: Likewise. * include/grub/symbol.h: Likewise. * include/grub/types.h: Likewise. * include/multiboot2.h: Likewise. * io/gzio.c: Likewise. * kern/device.c: Likewise. * kern/disk.c: Likewise. * kern/efi/efi.c: Likewise. * kern/efi/mm.c: Likewise. * kern/elf.c: Likewise. * kern/file.c: Likewise. * kern/i386/dl.c: Likewise. * kern/i386/pc/init.c: Likewise. * kern/i386/pc/startup.S: Likewise. * kern/ieee1275/ieee1275.c: Likewise. * kern/ieee1275/init.c: Likewise. * kern/main.c: Likewise. * kern/mm.c: Likewise. * kern/powerpc/dl.c: Likewise. * kern/sparc64/dl.c: Likewise. * kern/x86_64/dl.c: Likewise. * lib/hexdump.c: Likewise. * loader/efi/appleloader.c: Likewise. * loader/i386/ieee1275/linux.c: Likewise. * loader/i386/pc/chainloader.c: Likewise. * loader/i386/pc/linux.c: Likewise. * loader/i386/pc/multiboot2.c: Likewise. * loader/ieee1275/multiboot2.c: Likewise. * loader/multiboot2.c: Likewise. * loader/multiboot_loader.c: Likewise. * loader/powerpc/ieee1275/linux.c: Likewise. * normal/completion.c: Likewise. * normal/menu_entry.c: Likewise. * partmap/apple.c: Likewise. * util/grub.d/10_hurd.in: Likewise. * util/hostfs.c: Likewise. * video/readers/png.c: Likewise.
2010-01-03 22:05:07 +00:00
* Copyright (C) 2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/disk.h>
#include <grub/dl.h>
#include <grub/kernel.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/types.h>
#include <grub/scsi.h>
#include <grub/scsicmd.h>
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#include <grub/time.h>
static grub_scsi_dev_t grub_scsi_dev_list;
void
grub_scsi_dev_register (grub_scsi_dev_t dev)
{
dev->next = grub_scsi_dev_list;
grub_scsi_dev_list = dev;
}
void
grub_scsi_dev_unregister (grub_scsi_dev_t dev)
{
grub_scsi_dev_t *p, q;
for (p = &grub_scsi_dev_list, q = *p; q; p = &(q->next), q = q->next)
if (q == dev)
{
*p = q->next;
break;
}
}
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/* Check result of previous operation. */
static grub_err_t
grub_scsi_request_sense (grub_scsi_t scsi)
{
struct grub_scsi_request_sense rs;
struct grub_scsi_request_sense_data rsd;
grub_err_t err;
rs.opcode = grub_scsi_cmd_request_sense;
rs.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
rs.reserved1 = 0;
rs.reserved2 = 0;
rs.alloc_length = 0x12; /* XXX: Hardcoded for now */
rs.control = 0;
grub_memset (rs.pad, 0, sizeof(rs.pad));
err = scsi->dev->read (scsi, sizeof (rs), (char *) &rs,
sizeof (rsd), (char *) &rsd);
if (err)
return err;
return GRUB_ERR_NONE;
}
/* Self commenting... */
static grub_err_t
grub_scsi_test_unit_ready (grub_scsi_t scsi)
{
struct grub_scsi_test_unit_ready tur;
grub_err_t err;
grub_err_t err_sense;
tur.opcode = grub_scsi_cmd_test_unit_ready;
tur.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
tur.reserved1 = 0;
tur.reserved2 = 0;
tur.reserved3 = 0;
tur.control = 0;
grub_memset (tur.pad, 0, sizeof(tur.pad));
err = scsi->dev->read (scsi, sizeof (tur), (char *) &tur,
0, NULL);
/* Each SCSI command should be followed by Request Sense.
If not so, many devices STALLs or definitely freezes. */
err_sense = grub_scsi_request_sense (scsi);
if (err_sense != GRUB_ERR_NONE)
grub_errno = err;
/* err_sense is ignored for now and Request Sense Data also... */
if (err)
return err;
return GRUB_ERR_NONE;
}
/* Determine if the device is removable and the type of the device
SCSI. */
static grub_err_t
grub_scsi_inquiry (grub_scsi_t scsi)
{
struct grub_scsi_inquiry iq;
struct grub_scsi_inquiry_data iqd;
grub_err_t err;
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grub_err_t err_sense;
iq.opcode = grub_scsi_cmd_inquiry;
iq.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
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iq.page = 0;
iq.reserved = 0;
iq.alloc_length = 0x24; /* XXX: Hardcoded for now */
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iq.control = 0;
grub_memset (iq.pad, 0, sizeof(iq.pad));
err = scsi->dev->read (scsi, sizeof (iq), (char *) &iq,
sizeof (iqd), (char *) &iqd);
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/* Each SCSI command should be followed by Request Sense.
If not so, many devices STALLs or definitely freezes. */
err_sense = grub_scsi_request_sense (scsi);
if (err_sense != GRUB_ERR_NONE)
grub_errno = err;
/* err_sense is ignored for now and Request Sense Data also... */
if (err)
return err;
scsi->devtype = iqd.devtype & GRUB_SCSI_DEVTYPE_MASK;
scsi->removable = iqd.rmb >> GRUB_SCSI_REMOVABLE_BIT;
return GRUB_ERR_NONE;
}
/* Read the capacity and block size of SCSI. */
static grub_err_t
grub_scsi_read_capacity (grub_scsi_t scsi)
{
struct grub_scsi_read_capacity rc;
struct grub_scsi_read_capacity_data rcd;
grub_err_t err;
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grub_err_t err_sense;
rc.opcode = grub_scsi_cmd_read_capacity;
rc.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
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rc.logical_block_addr = 0;
rc.reserved1 = 0;
rc.reserved2 = 0;
rc.PMI = 0;
rc.control = 0;
rc.pad = 0;
err = scsi->dev->read (scsi, sizeof (rc), (char *) &rc,
sizeof (rcd), (char *) &rcd);
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/* Each SCSI command should be followed by Request Sense.
If not so, many devices STALLs or definitely freezes. */
err_sense = grub_scsi_request_sense (scsi);
if (err_sense != GRUB_ERR_NONE)
grub_errno = err;
/* err_sense is ignored for now and Request Sense Data also... */
if (err)
return err;
scsi->size = grub_be_to_cpu32 (rcd.size);
scsi->blocksize = grub_be_to_cpu32 (rcd.blocksize);
return GRUB_ERR_NONE;
}
/* Send a SCSI request for DISK: read SIZE sectors starting with
sector SECTOR to BUF. */
static grub_err_t
grub_scsi_read10 (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
{
grub_scsi_t scsi;
struct grub_scsi_read10 rd;
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grub_err_t err;
grub_err_t err_sense;
scsi = disk->data;
rd.opcode = grub_scsi_cmd_read10;
rd.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
rd.lba = grub_cpu_to_be32 (sector);
rd.reserved = 0;
rd.size = grub_cpu_to_be16 (size);
rd.reserved2 = 0;
rd.pad = 0;
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err = scsi->dev->read (scsi, sizeof (rd), (char *) &rd, size * scsi->blocksize, buf);
/* Each SCSI command should be followed by Request Sense.
If not so, many devices STALLs or definitely freezes. */
err_sense = grub_scsi_request_sense (scsi);
if (err_sense != GRUB_ERR_NONE)
grub_errno = err;
/* err_sense is ignored for now and Request Sense Data also... */
return err;
}
/* Send a SCSI request for DISK: read SIZE sectors starting with
sector SECTOR to BUF. */
static grub_err_t
grub_scsi_read12 (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
{
grub_scsi_t scsi;
struct grub_scsi_read12 rd;
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grub_err_t err;
grub_err_t err_sense;
scsi = disk->data;
rd.opcode = grub_scsi_cmd_read12;
rd.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
rd.lba = grub_cpu_to_be32 (sector);
rd.size = grub_cpu_to_be32 (size);
rd.reserved = 0;
rd.control = 0;
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err = scsi->dev->read (scsi, sizeof (rd), (char *) &rd, size * scsi->blocksize, buf);
/* Each SCSI command should be followed by Request Sense.
If not so, many devices STALLs or definitely freezes. */
err_sense = grub_scsi_request_sense (scsi);
if (err_sense != GRUB_ERR_NONE)
grub_errno = err;
/* err_sense is ignored for now and Request Sense Data also... */
return err;
}
#if 0
/* Send a SCSI request for DISK: write the data stored in BUF to SIZE
sectors starting with SECTOR. */
static grub_err_t
grub_scsi_write10 (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
{
grub_scsi_t scsi;
struct grub_scsi_write10 wr;
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grub_err_t err;
grub_err_t err_sense;
scsi = disk->data;
wr.opcode = grub_scsi_cmd_write10;
wr.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
wr.lba = grub_cpu_to_be32 (sector);
wr.reserved = 0;
wr.size = grub_cpu_to_be16 (size);
wr.reserved2 = 0;
wr.pad = 0;
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err = scsi->dev->write (scsi, sizeof (wr), (char *) &wr, size * scsi->blocksize, buf);
/* Each SCSI command should be followed by Request Sense.
If not so, many devices STALLs or definitely freezes. */
err_sense = grub_scsi_request_sense (scsi);
if (err_sense != GRUB_ERR_NONE)
grub_errno = err;
/* err_sense is ignored for now and Request Sense Data also... */
return err;
}
/* Send a SCSI request for DISK: write the data stored in BUF to SIZE
sectors starting with SECTOR. */
static grub_err_t
grub_scsi_write12 (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
{
grub_scsi_t scsi;
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struct grub_scsi_write12 wr;
grub_err_t err;
grub_err_t err_sense;
scsi = disk->data;
wr.opcode = grub_scsi_cmd_write12;
wr.lun = scsi->lun << GRUB_SCSI_LUN_SHIFT;
wr.lba = grub_cpu_to_be32 (sector);
wr.size = grub_cpu_to_be32 (size);
wr.reserved = 0;
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wr.control = 0;
err = scsi->dev->write (scsi, sizeof (wr), (char *) &wr, size * scsi->blocksize, buf);
/* Each SCSI command should be followed by Request Sense.
If not so, many devices STALLs or definitely freezes. */
err_sense = grub_scsi_request_sense (scsi);
if (err_sense != GRUB_ERR_NONE)
grub_errno = err;
/* err_sense is ignored for now and Request Sense Data also... */
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return err;
}
#endif
static int
grub_scsi_iterate (int (*hook) (const char *name))
{
grub_scsi_dev_t p;
auto int scsi_iterate (const char *name, int luns);
int scsi_iterate (const char *name, int luns)
{
int i;
/* In case of a single LUN, just return `usbX'. */
if (luns == 1)
return hook (name);
/* In case of multiple LUNs, every LUN will get a prefix to
distinguish it. */
for (i = 0; i < luns; i++)
{
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char *sname;
int ret;
sname = grub_xasprintf ("%s%c", name, 'a' + i);
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if (!sname)
return 1;
ret = hook (sname);
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grub_free (sname);
if (ret)
return 1;
}
return 0;
}
for (p = grub_scsi_dev_list; p; p = p->next)
if (p->iterate && (p->iterate) (scsi_iterate))
return 1;
return 0;
}
static grub_err_t
grub_scsi_open (const char *name, grub_disk_t disk)
{
grub_scsi_dev_t p;
grub_scsi_t scsi;
grub_err_t err;
int len;
int lun;
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grub_uint64_t maxtime;
scsi = grub_malloc (sizeof (*scsi));
if (! scsi)
return grub_errno;
len = grub_strlen (name);
lun = name[len - 1] - 'a';
/* Try to detect a LUN ('a'-'z'), otherwise just use the first
LUN. */
if (lun < 0 || lun > 26)
lun = 0;
for (p = grub_scsi_dev_list; p; p = p->next)
{
if (p->open (name, scsi))
continue;
disk->id = (unsigned long) "scsi"; /* XXX */
disk->data = scsi;
scsi->dev = p;
scsi->lun = lun;
scsi->name = grub_strdup (name);
if (! scsi->name)
{
grub_free (scsi);
return grub_errno;
}
grub_dprintf ("scsi", "dev opened\n");
err = grub_scsi_inquiry (scsi);
if (err)
{
grub_free (scsi);
grub_dprintf ("scsi", "inquiry failed\n");
return err;
}
grub_dprintf ("scsi", "inquiry: devtype=0x%02x removable=%d\n",
scsi->devtype, scsi->removable);
/* Try to be conservative about the device types
supported. */
if (scsi->devtype != grub_scsi_devtype_direct
&& scsi->devtype != grub_scsi_devtype_cdrom)
{
grub_free (scsi);
return grub_error (GRUB_ERR_UNKNOWN_DEVICE,
"unknown SCSI device");
}
if (scsi->devtype == grub_scsi_devtype_cdrom)
disk->has_partitions = 0;
else
disk->has_partitions = 1;
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/* According to USB MS tests specification, issue Test Unit Ready
* until OK */
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maxtime = grub_get_time_ms () + 5000; /* It is safer value */
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do
{
/* Timeout is necessary - for example in case when we have
* universal card reader with more LUNs and we have only
* one card inserted (or none), so only one LUN (or none)
* will be ready - and we want not to hang... */
if (grub_get_time_ms () > maxtime)
{
err = GRUB_ERR_READ_ERROR;
grub_free (scsi);
grub_dprintf ("scsi", "LUN is not ready - timeout\n");
return err;
}
err = grub_scsi_test_unit_ready (scsi);
}
while (err == GRUB_ERR_READ_ERROR);
/* Reset grub_errno !
* It is set to some error code in loop before... */
grub_errno = GRUB_ERR_NONE;
/* Read capacity of media */
err = grub_scsi_read_capacity (scsi);
if (err)
{
grub_free (scsi);
grub_dprintf ("scsi", "READ CAPACITY failed\n");
return err;
}
/* SCSI blocks can be something else than 512, although GRUB
wants 512 byte blocks. */
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disk->total_sectors = ((grub_uint64_t)scsi->size
* (grub_uint64_t)scsi->blocksize)
>> GRUB_DISK_SECTOR_BITS;
grub_dprintf ("scsi", "blocks=%u, blocksize=%u\n",
scsi->size, scsi->blocksize);
grub_dprintf ("scsi", "Disk total 512 sectors = %llu\n",
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(unsigned long long) disk->total_sectors);
return GRUB_ERR_NONE;
}
grub_free (scsi);
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a SCSI disk");
}
static void
grub_scsi_close (grub_disk_t disk)
{
grub_scsi_t scsi;
scsi = disk->data;
scsi->dev->close (scsi);
grub_free (scsi);
}
static grub_err_t
grub_scsi_read (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
{
grub_scsi_t scsi;
scsi = disk->data;
/* SCSI sectors are variable in size. GRUB uses 512 byte
sectors. */
if (scsi->blocksize != GRUB_DISK_SECTOR_SIZE)
{
unsigned spb = scsi->blocksize >> GRUB_DISK_SECTOR_BITS;
if (! (spb != 0 && (scsi->blocksize & GRUB_DISK_SECTOR_SIZE) == 0))
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
2009-12-24 Carles Pina i Estany <carles@pina.cat> * bus/usb/usbhub.c: Fix capitalization, fullstop and newlines in grub_errno calls. * commands/acpi.c: Likewise. * commands/blocklist.c: Likewise. * commands/efi/loadbios.c: Likewise. * commands/i386/pc/drivemap.c: Likewise. * commands/loadenv.c: Likewise. * commands/memrw.c: Likewise. * commands/password.c: Likewise. * commands/videotest.c: Likewise. * disk/ata.c: Likewise. * disk/ata_pthru.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/ieee1275/nand.c: Likewise. * disk/ieee1275/ofdisk.c: Likewise. * disk/loopback.c: Likewise. * disk/lvm.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/raid.c: Likewise. * disk/raid6_recover.c: Likewise. * disk/scsi.c: Likewise. * efiemu/main.c: Likewise. * efiemu/mm.c: Likewise. * efiemu/pnvram.c: Likewise. * efiemu/symbols.c: Likewise. * font/font.c: Likewise. * fs/cpio.c: Likewise. * fs/hfsplus.c: Likewise. * fs/iso9660.c: Likewise. * fs/jfs.c: Likewise. * fs/minix.c: Likewise. * fs/ntfs.c: Likewise. * fs/ntfscomp.c: Likewise. * fs/reiserfs.c: Likewise. * fs/ufs.c: Likewise. * fs/xfs.c: Likewise. * gettext/gettext.c: Likewise. * include/grub/auth.h: Likewise. * kern/elf.c: Likewise. * kern/file.c: Likewise. * kern/ieee1275/init.c: Likewise. * kern/ieee1275/mmap.c: Likewise. * kern/ieee1275/openfw.c: Likewise. * kern/powerpc/dl.c: Likewise. * kern/sparc64/dl.c: Likewise. * lib/arg.c: Likewise. * loader/i386/bsd.c: Likewise. * loader/i386/bsdXX.c: Likewise. * loader/i386/efi/linux.c: Likewise. * loader/i386/efi/xnu.c: Likewise. * loader/i386/ieee1275/linux.c: Likewise. * loader/i386/linux.c: Likewise. * loader/i386/multiboot.c: Likewise. * loader/i386/pc/linux.c: Likewise. * loader/i386/pc/multiboot2.c: Likewise. * loader/i386/xnu.c: Likewise. * loader/ieee1275/multiboot2.c: Likewise. * loader/macho.c: Likewise. * loader/machoXX.c: Likewise. * loader/multiboot2.c: Likewise. * loader/multiboot_loader.c: Likewise. * loader/powerpc/ieee1275/linux.c: Likewise. * loader/sparc64/ieee1275/linux.c: Likewise. * loader/xnu.c: Likewise. * loader/xnu_resume.c: Likewise. * mmap/i386/pc/mmap.c: Likewise. * normal/menu_viewer.c: Likewise. * partmap/acorn.c: Likewise. * partmap/amiga.c: Likewise. * partmap/apple.c: Likewise. * script/lexer.c: Likewise. * term/gfxterm.c: Likewise. * term/i386/pc/serial.c: Likewise. * term/i386/pc/vga.c: Likewise. * term/ieee1275/ofconsole.c: Likewise. * term/terminfo.c: Likewise. * video/bitmap.c: Likewise. * video/efi_gop.c: Likewise. * video/efi_uga.c: Likewise. * video/fb/video_fb.c: Likewise. * video/i386/pc/vbe.c: Likewise. * video/readers/tga.c: Likewise. * video/video.c: Likewise.
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"unsupported SCSI block size");
grub_uint32_t sector_mod = 0;
sector = grub_divmod64 (sector, spb, &sector_mod);
if (! (sector_mod == 0 && size % spb == 0))
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
2009-12-24 Carles Pina i Estany <carles@pina.cat> * bus/usb/usbhub.c: Fix capitalization, fullstop and newlines in grub_errno calls. * commands/acpi.c: Likewise. * commands/blocklist.c: Likewise. * commands/efi/loadbios.c: Likewise. * commands/i386/pc/drivemap.c: Likewise. * commands/loadenv.c: Likewise. * commands/memrw.c: Likewise. * commands/password.c: Likewise. * commands/videotest.c: Likewise. * disk/ata.c: Likewise. * disk/ata_pthru.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/ieee1275/nand.c: Likewise. * disk/ieee1275/ofdisk.c: Likewise. * disk/loopback.c: Likewise. * disk/lvm.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/raid.c: Likewise. * disk/raid6_recover.c: Likewise. * disk/scsi.c: Likewise. * efiemu/main.c: Likewise. * efiemu/mm.c: Likewise. * efiemu/pnvram.c: Likewise. * efiemu/symbols.c: Likewise. * font/font.c: Likewise. * fs/cpio.c: Likewise. * fs/hfsplus.c: Likewise. * fs/iso9660.c: Likewise. * fs/jfs.c: Likewise. * fs/minix.c: Likewise. * fs/ntfs.c: Likewise. * fs/ntfscomp.c: Likewise. * fs/reiserfs.c: Likewise. * fs/ufs.c: Likewise. * fs/xfs.c: Likewise. * gettext/gettext.c: Likewise. * include/grub/auth.h: Likewise. * kern/elf.c: Likewise. * kern/file.c: Likewise. * kern/ieee1275/init.c: Likewise. * kern/ieee1275/mmap.c: Likewise. * kern/ieee1275/openfw.c: Likewise. * kern/powerpc/dl.c: Likewise. * kern/sparc64/dl.c: Likewise. * lib/arg.c: Likewise. * loader/i386/bsd.c: Likewise. * loader/i386/bsdXX.c: Likewise. * loader/i386/efi/linux.c: Likewise. * loader/i386/efi/xnu.c: Likewise. * loader/i386/ieee1275/linux.c: Likewise. * loader/i386/linux.c: Likewise. * loader/i386/multiboot.c: Likewise. * loader/i386/pc/linux.c: Likewise. * loader/i386/pc/multiboot2.c: Likewise. * loader/i386/xnu.c: Likewise. * loader/ieee1275/multiboot2.c: Likewise. * loader/macho.c: Likewise. * loader/machoXX.c: Likewise. * loader/multiboot2.c: Likewise. * loader/multiboot_loader.c: Likewise. * loader/powerpc/ieee1275/linux.c: Likewise. * loader/sparc64/ieee1275/linux.c: Likewise. * loader/xnu.c: Likewise. * loader/xnu_resume.c: Likewise. * mmap/i386/pc/mmap.c: Likewise. * normal/menu_viewer.c: Likewise. * partmap/acorn.c: Likewise. * partmap/amiga.c: Likewise. * partmap/apple.c: Likewise. * script/lexer.c: Likewise. * term/gfxterm.c: Likewise. * term/i386/pc/serial.c: Likewise. * term/i386/pc/vga.c: Likewise. * term/ieee1275/ofconsole.c: Likewise. * term/terminfo.c: Likewise. * video/bitmap.c: Likewise. * video/efi_gop.c: Likewise. * video/efi_uga.c: Likewise. * video/fb/video_fb.c: Likewise. * video/i386/pc/vbe.c: Likewise. * video/readers/tga.c: Likewise. * video/video.c: Likewise.
2009-12-24 22:53:05 +00:00
"unaligned SCSI read not supported");
size /= spb;
}
/* Depending on the type, select a read function. */
switch (scsi->devtype)
{
case grub_scsi_devtype_direct:
return grub_scsi_read10 (disk, sector, size, buf);
case grub_scsi_devtype_cdrom:
return grub_scsi_read12 (disk, sector, size, buf);
}
/* XXX: Never reached. */
return GRUB_ERR_NONE;
2010-06-01 00:10:19 +00:00
#if 0 /* Workaround - it works - but very slowly, from some reason
* unknown to me (specially on OHCI). Do not use it. */
/* Split transfer requests to device sector size because */
/* some devices are not able to transfer more than 512-1024 bytes */
grub_err_t err = GRUB_ERR_NONE;
for ( ; size; size--)
{
/* Depending on the type, select a read function. */
switch (scsi->devtype)
{
case grub_scsi_devtype_direct:
err = grub_scsi_read10 (disk, sector, 1, buf);
break;
case grub_scsi_devtype_cdrom:
err = grub_scsi_read12 (disk, sector, 1, buf);
break;
default: /* This should not happen */
return GRUB_ERR_READ_ERROR;
}
if (err)
return err;
sector++;
buf += scsi->blocksize;
}
return err;
#endif
}
static grub_err_t
grub_scsi_write (grub_disk_t disk __attribute((unused)),
grub_disk_addr_t sector __attribute((unused)),
grub_size_t size __attribute((unused)),
const char *buf __attribute((unused)))
{
#if 0
/* XXX: Not tested yet! */
/* XXX: This should depend on the device type? */
return grub_scsi_write10 (disk, sector, size, buf);
#endif
return GRUB_ERR_NOT_IMPLEMENTED_YET;
}
static struct grub_disk_dev grub_scsi_dev =
{
.name = "scsi",
.id = GRUB_DISK_DEVICE_SCSI_ID,
.iterate = grub_scsi_iterate,
.open = grub_scsi_open,
.close = grub_scsi_close,
.read = grub_scsi_read,
.write = grub_scsi_write,
.next = 0
};
GRUB_MOD_INIT(scsi)
{
grub_disk_dev_register (&grub_scsi_dev);
}
GRUB_MOD_FINI(scsi)
{
grub_disk_dev_unregister (&grub_scsi_dev);
}