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* include/grub/ata.h (grub_ata): Add a new element maxbuffer.

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* grub-core/disk/ata.c (grub_ata_readwrite): Limit to ata->maxbuffer.
	* grub-core/disk/pata.c (grub_pata_open): Set ata->maxbuffer.
	* grub-core/disk/ahci.c (grub_ahci_open): Likewise.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2012-01-29 19:00:30 +01:00
parent 74310bd8a7
commit 2b5336a24a
5 changed files with 16 additions and 2 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2012-01-29 Vladimir Serbinenko <phcoder@gmail.com>
* include/grub/ata.h (grub_ata): Add a new element maxbuffer.
* grub-core/disk/ata.c (grub_ata_readwrite): Limit to ata->maxbuffer.
* grub-core/disk/pata.c (grub_pata_open): Set ata->maxbuffer.
* grub-core/disk/ahci.c (grub_ahci_open): Likewise.
2012-01-29 Vladimir Serbinenko <phcoder@gmail.com>
* include/grub/zfs/dnode.h (DN_MIN_INDBLKSHIFT): Removed.

1
grub-core/disk/ahci.c
View file

@ -693,6 +693,7 @@ grub_ahci_open (int id, int devnum, struct grub_ata *ata)
ata->data = dev;
ata->dma = 1;
ata->maxbuffer = GRUB_AHCI_PRDT_MAX_CHUNK_LENGTH;
ata->present = &dev->present;
return GRUB_ERR_NONE;

7
grub-core/disk/ata.c
View file

@ -278,6 +278,7 @@ grub_ata_readwrite (grub_disk_t disk, grub_disk_addr_t sector,
grub_ata_addressing_t addressing = ata->addr;
grub_size_t batch;
int cmd, cmd_write;
grub_size_t nsectors = 0;
grub_dprintf("ata", "grub_ata_readwrite (size=%llu, rw=%d)\n",
(unsigned long long) size, rw);
@ -314,9 +315,11 @@ grub_ata_readwrite (grub_disk_t disk, grub_disk_addr_t sector,
cmd = GRUB_ATA_CMD_READ_SECTORS;
cmd_write = GRUB_ATA_CMD_WRITE_SECTORS;
}
}
}
if (batch > (ata->maxbuffer >> ata->log_sector_size))
batch = (ata->maxbuffer >> ata->log_sector_size);
grub_size_t nsectors = 0;
while (nsectors < size)
{
struct grub_disk_ata_pass_through_parms parms;

1
grub-core/disk/pata.c
View file

@ -484,6 +484,7 @@ grub_pata_open (int id, int devnum, struct grub_ata *ata)
ata->data = devfnd;
ata->dma = 0;
ata->maxbuffer = 256 * 512;
ata->present = &devfnd->present;
return GRUB_ERR_NONE;

2
include/grub/ata.h
View file

@ -182,6 +182,8 @@ struct grub_ata
int dma;
grub_size_t maxbuffer;
int *present;
void *data;