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[1796] 2008-08-08 Marco Gerards <address@hidden>
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From: |
Marco Gerards |
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Subject: |
[1796] 2008-08-08 Marco Gerards <address@hidden> |
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Date: |
Thu, 07 Aug 2008 23:37:33 +0000 |
Revision: 1796
http://svn.sv.gnu.org/viewvc/?view=rev&root=grub&revision=1796
Author: marco_g
Date: 2008-08-07 23:37:33 +0000 (Thu, 07 Aug 2008)
Log Message:
-----------
2008-08-08 Marco Gerards <address@hidden>
* disk/ata.c (grub_ata_regget): Change return type to
`grub_uint8_t'.
(grub_ata_regget2): Likewise.
(grub_ata_wait_status): New function.
(grub_ata_wait_busy): Removed function, updated all users to use
`grub_ata_wait_status'.
(grub_ata_wait_drq): Likewise.
(grub_ata_cmd): New function.
(grub_ata_pio_read): Change return type to `grub_uint8_t'. Add
error handling.
(grub_ata_pio_write): Add error handling.
(grub_atapi_identify): Likewise.
(grub_atapi_packet): Use `grub_ata_cmd' and improve error
handling.
(grub_ata_identify): Use `grub_ata_cmd' and improve error
handling. Actually use the detected registers. Reorder the
detection logic such that it is easier to read.
(grub_ata_pciinit): Do not assign the same ID to each controller.
(grub_ata_setaddress): Use `grub_ata_cmd' and improve error
handling.
(grub_atapi_readsector): Check the result of `grub_ata_pio_read'.
* include/grub/err.h (grub_err_t): Add `GRUB_ERR_TIMEOUT'.
Modified Paths:
--------------
trunk/grub2/ChangeLog
trunk/grub2/disk/ata.c
trunk/grub2/include/grub/err.h
Modified: trunk/grub2/ChangeLog
===================================================================
--- trunk/grub2/ChangeLog 2008-08-07 22:55:50 UTC (rev 1795)
+++ trunk/grub2/ChangeLog 2008-08-07 23:37:33 UTC (rev 1796)
@@ -1,5 +1,31 @@
2008-08-08 Marco Gerards <address@hidden>
+ * disk/ata.c (grub_ata_regget): Change return type to
+ `grub_uint8_t'.
+ (grub_ata_regget2): Likewise.
+ (grub_ata_wait_status): New function.
+ (grub_ata_wait_busy): Removed function, updated all users to use
+ `grub_ata_wait_status'.
+ (grub_ata_wait_drq): Likewise.
+ (grub_ata_cmd): New function.
+ (grub_ata_pio_read): Change return type to `grub_uint8_t'. Add
+ error handling.
+ (grub_ata_pio_write): Add error handling.
+ (grub_atapi_identify): Likewise.
+ (grub_atapi_packet): Use `grub_ata_cmd' and improve error
+ handling.
+ (grub_ata_identify): Use `grub_ata_cmd' and improve error
+ handling. Actually use the detected registers. Reorder the
+ detection logic such that it is easier to read.
+ (grub_ata_pciinit): Do not assign the same ID to each controller.
+ (grub_ata_setaddress): Use `grub_ata_cmd' and improve error
+ handling.
+ (grub_atapi_readsector): Check the result of `grub_ata_pio_read'.
+
+ * include/grub/err.h (grub_err_t): Add `GRUB_ERR_TIMEOUT'.
+
+2008-08-08 Marco Gerards <address@hidden>
+
* NEWS: Update.
2008-08-07 Bean <address@hidden>
Modified: trunk/grub2/disk/ata.c
===================================================================
--- trunk/grub2/disk/ata.c 2008-08-07 22:55:50 UTC (rev 1795)
+++ trunk/grub2/disk/ata.c 2008-08-07 23:37:33 UTC (rev 1796)
@@ -118,7 +118,7 @@
grub_outb (val, dev->ioaddress + reg);
}
-static inline int
+static inline grub_uint8_t
grub_ata_regget (struct grub_ata_device *dev, int reg)
{
return grub_inb (dev->ioaddress + reg);
@@ -130,23 +130,30 @@
grub_outb (val, dev->ioaddress2 + reg);
}
-static inline int
+static inline grub_uint8_t
grub_ata_regget2 (struct grub_ata_device *dev, int reg)
{
return grub_inb (dev->ioaddress2 + reg);
}
-/* Wait until the device DEV has the status set to ready. */
-static inline void
-grub_ata_wait_busy (struct grub_ata_device *dev)
+static inline grub_err_t
+grub_ata_wait_status (struct grub_ata_device *dev,
+ grub_uint8_t maskset, grub_uint8_t maskclear)
{
- while ((grub_ata_regget (dev, GRUB_ATA_REG_STATUS) & GRUB_ATA_STATUS_BUSY));
-}
+ int i;
-static inline void
-grub_ata_wait_drq (struct grub_ata_device *dev)
-{
- while (! (grub_ata_regget (dev, GRUB_ATA_REG_STATUS) & GRUB_ATA_STATUS_DRQ));
+ for (i = 0; i < 1000; i++)
+ {
+ grub_uint8_t reg;
+
+ reg = grub_ata_regget (dev, GRUB_ATA_REG_STATUS);
+ if ((reg & maskset) == maskset && (reg & maskclear) == 0)
+ return GRUB_ERR_NONE;
+
+ grub_millisleep (1);
+ }
+
+ return grub_error (GRUB_ERR_TIMEOUT, "ata timeout");
}
static inline void
@@ -155,6 +162,21 @@
grub_millisleep (50);
}
+static grub_err_t
+grub_ata_cmd (struct grub_ata_device *dev, int cmd)
+{
+ grub_err_t err;
+
+ err = grub_ata_wait_status (dev, 0,
+ GRUB_ATA_STATUS_DRQ | GRUB_ATA_STATUS_BUSY);
+ if (err)
+ return err;
+
+ grub_ata_regset (dev, GRUB_ATA_REG_CMD, cmd);
+
+ return GRUB_ERR_NONE;
+}
+
/* Byteorder has to be changed before strings can be read. */
static inline void
grub_ata_strncpy (char *dst, char *src, grub_size_t len)
@@ -164,11 +186,11 @@
unsigned int i;
for (i = 0; i < len / 2; i++)
- *(dst16++) = grub_be_to_cpu16(*(src16++));
+ *(dst16++) = grub_be_to_cpu16 (*(src16++));
dst[len] = '\0';
}
-static int
+static grub_err_t
grub_ata_pio_read (struct grub_ata_device *dev, char *buf,
grub_size_t size)
{
@@ -179,16 +201,17 @@
return grub_ata_regget (dev, GRUB_ATA_REG_ERROR);
/* Wait until the data is available. */
- grub_ata_wait_drq (dev);
+ if (grub_ata_wait_status (dev, GRUB_ATA_STATUS_DRQ, 0))
+ return grub_errno;;
/* Read in the data, word by word. */
for (i = 0; i < size / 2; i++)
buf16[i] = grub_le_to_cpu16 (grub_inw(dev->ioaddress + GRUB_ATA_REG_DATA));
if (grub_ata_regget (dev, GRUB_ATA_REG_STATUS) & GRUB_ATA_STATUS_ERR)
- return grub_ata_regget (dev, GRUB_ATA_REG_ERROR);
+ return grub_error (GRUB_ERR_READ_ERROR, "ATA read error");
- return 0;
+ return GRUB_ERR_NONE;
}
static grub_err_t
@@ -201,17 +224,18 @@
if (grub_ata_regget (dev, GRUB_ATA_REG_STATUS) & GRUB_ATA_STATUS_ERR)
return grub_ata_regget (dev, GRUB_ATA_REG_ERROR);
- /* Wait until the device is ready to write. */
- grub_ata_wait_drq (dev);
+ /* Wait until the data is available. */
+ if (grub_ata_wait_status (dev, GRUB_ATA_STATUS_DRQ, 0))
+ return 0;
/* Write the data, word by word. */
for (i = 0; i < size / 2; i++)
grub_outw(grub_cpu_to_le16 (buf16[i]), dev->ioaddress + GRUB_ATA_REG_DATA);
if (grub_ata_regget (dev, GRUB_ATA_REG_STATUS) & GRUB_ATA_STATUS_ERR)
- return grub_ata_regget (dev, GRUB_ATA_REG_ERROR);
+ return grub_error (GRUB_ERR_WRITE_ERROR, "ATA write error");
- return 0;
+ return GRUB_ERR_NONE;
}
static void
@@ -243,22 +267,33 @@
if (! info)
return grub_errno;
- grub_ata_wait_busy (dev);
+ if (grub_ata_wait_status (dev, 0, GRUB_ATA_STATUS_BUSY))
+ {
+ grub_free (info);
+ return grub_errno;
+ }
grub_ata_regset (dev, GRUB_ATA_REG_DISK, 0xE0 | dev->device << 4);
- grub_ata_regset (dev, GRUB_ATA_REG_CMD,
- GRUB_ATA_CMD_IDENTIFY_PACKET_DEVICE);
- grub_ata_wait ();
- grub_ata_pio_read (dev, info, 256);
+ if (grub_ata_cmd (dev, GRUB_ATA_CMD_IDENTIFY_PACKET_DEVICE))
+ {
+ grub_free (info);
+ return grub_errno;
+ }
+ if (grub_ata_pio_read (dev, info, 256))
+ {
+ grub_free (info);
+ return grub_errno;
+ }
+
dev->atapi = 1;
grub_ata_dumpinfo (dev, info);
grub_free (info);
- return 0;
+ return GRUB_ERR_NONE;
}
static grub_err_t
@@ -269,12 +304,14 @@
grub_ata_regset (dev, GRUB_ATA_REG_SECTORS, 0);
grub_ata_regset (dev, GRUB_ATA_REG_LBAHIGH, 0xFF);
grub_ata_regset (dev, GRUB_ATA_REG_LBAMID, 0xFF);
- grub_ata_regset (dev, GRUB_ATA_REG_CMD, GRUB_ATA_CMD_PACKET);
- grub_ata_wait ();
- grub_ata_pio_write (dev, packet, 12);
+ if (grub_ata_cmd (dev, GRUB_ATA_CMD_PACKET))
+ return grub_errno;
- return 0;
+ if (grub_ata_pio_write (dev, packet, 12))
+ return grub_errno;
+
+ return GRUB_ERR_NONE;
}
static grub_err_t
@@ -282,7 +319,7 @@
{
char *info;
grub_uint16_t *info16;
- int ataerr;
+ int ataerr = 0;
info = grub_malloc (GRUB_DISK_SECTOR_SIZE);
if (! info)
@@ -290,13 +327,22 @@
info16 = (grub_uint16_t *) info;
- grub_ata_wait_busy (dev);
+ if (grub_ata_wait_status (dev, 0, GRUB_ATA_STATUS_BUSY))
+ {
+ grub_free (info);
+ return grub_errno;
+ }
grub_ata_regset (dev, GRUB_ATA_REG_DISK, 0xE0 | dev->device << 4);
- grub_ata_regset (dev, GRUB_ATA_REG_CMD, GRUB_ATA_CMD_IDENTIFY_DEVICE);
+ if (grub_ata_cmd (dev, GRUB_ATA_CMD_IDENTIFY_DEVICE))
+ {
+ grub_free (info);
+ return grub_errno;
+ }
grub_ata_wait ();
- ataerr = grub_ata_pio_read (dev, info, GRUB_DISK_SECTOR_SIZE);
+ if (grub_ata_pio_read (dev, info, GRUB_DISK_SECTOR_SIZE))
+ ataerr = grub_ata_regget (dev, GRUB_ATA_REG_ERROR);
if (ataerr & 4)
{
/* ATAPI device detected. */
@@ -361,8 +407,8 @@
/* Setup the device information. */
dev->port = port;
dev->device = device;
- dev->ioaddress = grub_ata_ioaddress[dev->port];
- dev->ioaddress2 = grub_ata_ioaddress2[dev->port];
+ dev->ioaddress = addr;
+ dev->ioaddress2 = addr2;
dev->next = NULL;
/* Try to detect if the port is in use by writing to it,
@@ -381,8 +427,11 @@
/* Detect if the device is present by issuing a EXECUTE
DEVICE DIAGNOSTICS command. */
grub_ata_regset (dev, GRUB_ATA_REG_DISK, dev->device << 4);
- grub_ata_regset (dev, GRUB_ATA_REG_CMD,
- GRUB_ATA_CMD_EXEC_DEV_DIAGNOSTICS);
+ if (grub_ata_cmd (dev, GRUB_ATA_CMD_EXEC_DEV_DIAGNOSTICS))
+ {
+ grub_free (dev);
+ return grub_errno;
+ }
grub_ata_wait ();
grub_dprintf ("ata", "Registers: %x %x %x %x\n",
@@ -399,19 +448,19 @@
{
grub_dprintf ("ata", "ATAPI signature detected\n");
}
- else if (! (grub_ata_regget (dev, GRUB_ATA_REG_SECTORS) == 0x01
- && grub_ata_regget (dev, GRUB_ATA_REG_LBALOW) == 0x01
- && grub_ata_regget (dev, GRUB_ATA_REG_LBAMID) == 0x00
- && grub_ata_regget (dev, GRUB_ATA_REG_LBAHIGH) == 0x00))
+ else if (grub_ata_regget (dev, GRUB_ATA_REG_SECTORS) == 0x01
+ && grub_ata_regget (dev, GRUB_ATA_REG_LBALOW) == 0x01
+ && grub_ata_regget (dev, GRUB_ATA_REG_LBAMID) == 0x00
+ && grub_ata_regget (dev, GRUB_ATA_REG_LBAHIGH) == 0x00)
{
+ grub_dprintf ("ata", "ATA detected\n");
+ }
+ else
+ {
grub_dprintf ("ata", "incorrect signature\n");
grub_free (dev);
return 0;
}
- else
- {
- grub_dprintf ("ata", "ATA detected\n");
- }
/* Use the IDENTIFY DEVICE command to query the device. */
@@ -429,7 +478,8 @@
}
static int
-grub_ata_pciinit (int bus, int device, int func, grub_pci_id_t pciid)
+grub_ata_pciinit (int bus, int device, int func,
+ grub_pci_id_t pciid __attribute__((unused)))
{
static int compat_use[2] = { 0 };
grub_pci_address_t addr;
@@ -439,6 +489,7 @@
int rega;
int regb;
int i;
+ static int controller = 0;
/* Read class. */
addr = grub_pci_make_address (bus, device, func, 2);
@@ -487,11 +538,13 @@
if (rega && regb)
{
- grub_ata_device_initialize (i, 0, rega, regb);
- grub_ata_device_initialize (i, 1, rega, regb);
+ grub_ata_device_initialize (controller * 2 + i, 0, rega, regb);
+ grub_ata_device_initialize (controller * 2 + i, 1, rega, regb);
}
}
+ controller++;
+
return 0;
}
@@ -519,7 +572,8 @@
grub_disk_addr_t sector,
grub_size_t size)
{
- grub_ata_wait_busy (dev);
+ if (grub_ata_wait_status (dev, 0, GRUB_ATA_STATUS_BUSY))
+ return grub_errno;
switch (addressing)
{
@@ -615,21 +669,31 @@
if (rw == 0)
{
/* Read 256/65536 sectors. */
- grub_ata_regset (dev, GRUB_ATA_REG_CMD, cmd);
- grub_ata_wait ();
+ if (grub_ata_cmd (dev, cmd))
+ return grub_errno;
+
+ /* Wait for the command to complete. */
+ if (grub_ata_wait_status (dev, 0, GRUB_ATA_STATUS_BUSY))
+ return grub_errno;
+
for (sect = 0; sect < batch; sect++)
{
if (grub_ata_pio_read (dev, buf,
GRUB_DISK_SECTOR_SIZE))
- return grub_error (GRUB_ERR_READ_ERROR, "ATA read error");
+ return grub_errno;
buf += GRUB_DISK_SECTOR_SIZE;
}
}
else
{
/* Write 256/65536 sectors. */
- grub_ata_regset (dev, GRUB_ATA_REG_CMD, cmd_write);
- grub_ata_wait ();
+ if (grub_ata_cmd (dev, cmd))
+ return grub_errno;
+
+ /* Wait for the command to complete. */
+ if (grub_ata_wait_status (dev, 0, GRUB_ATA_STATUS_BUSY))
+ return grub_errno;
+
for (sect = 0; sect < batch; sect++)
{
if (grub_ata_pio_write (dev, buf,
@@ -648,18 +712,28 @@
if (rw == 0)
{
/* Read sectors. */
- grub_ata_regset (dev, GRUB_ATA_REG_CMD, cmd);
- grub_ata_wait ();
+ if (grub_ata_cmd (dev, cmd))
+ return grub_errno;
+
+ /* Wait for the command to complete. */
+ if (grub_ata_wait_status (dev, 0, GRUB_ATA_STATUS_BUSY))
+ return grub_errno;
+
for (sect = 0; sect < (size % batch); sect++)
{
if (grub_ata_pio_read (dev, buf, GRUB_DISK_SECTOR_SIZE))
- return grub_error (GRUB_ERR_READ_ERROR, "ATA read error");
+ return grub_errno;
buf += GRUB_DISK_SECTOR_SIZE;
}
} else {
/* Write sectors. */
- grub_ata_regset (dev, GRUB_ATA_REG_CMD, cmd_write);
- grub_ata_wait ();
+ if (grub_ata_cmd (dev, cmd))
+ return grub_errno;
+
+ /* Wait for the command to complete. */
+ if (grub_ata_wait_status (dev, 0, GRUB_ATA_STATUS_BUSY))
+ return grub_errno;
+
for (sect = 0; sect < (size % batch); sect++)
{
if (grub_ata_pio_write (dev, buf, GRUB_DISK_SECTOR_SIZE))
@@ -746,7 +820,8 @@
grub_atapi_packet (dev, (char *) &readcmd);
grub_ata_wait ();
- grub_ata_pio_read (dev, buf, GRUB_CDROM_SECTOR_SIZE);
+ if (grub_ata_pio_read (dev, buf, GRUB_CDROM_SECTOR_SIZE))
+ return grub_errno;
return 0;
}
Modified: trunk/grub2/include/grub/err.h
===================================================================
--- trunk/grub2/include/grub/err.h 2008-08-07 22:55:50 UTC (rev 1795)
+++ trunk/grub2/include/grub/err.h 2008-08-07 23:37:33 UTC (rev 1796)
@@ -51,7 +51,8 @@
GRUB_ERR_NOT_IMPLEMENTED_YET,
GRUB_ERR_SYMLINK_LOOP,
GRUB_ERR_BAD_GZIP_DATA,
- GRUB_ERR_MENU
+ GRUB_ERR_MENU,
+ GRUB_ERR_TIMEOUT
}
grub_err_t;
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- [1796] 2008-08-08 Marco Gerards <address@hidden>,
Marco Gerards <=