From: Egbert Eich eich@suse.com
This value serves as the shift value used to calculate the block number to read in file systems when implementing aviable block sizes.
Signed-off-by: Egbert Eich eich@suse.com --- common/cmd_ide.c | 5 +++++ common/cmd_sata.c | 1 + common/cmd_scsi.c | 4 ++++ common/usb_storage.c | 1 + drivers/block/ata_piix.c | 1 + drivers/block/pata_bfin.c | 2 ++ drivers/block/systemace.c | 1 + drivers/mmc/mmc.c | 1 + include/part.h | 5 +++++ 9 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/common/cmd_ide.c b/common/cmd_ide.c index 0105bdb..78b4aa7 100644 --- a/common/cmd_ide.c +++ b/common/cmd_ide.c @@ -455,6 +455,8 @@ void ide_init(void) ide_dev_desc[i].dev = i; ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN; ide_dev_desc[i].blksz = 0; + ide_dev_desc[i].log2blksz = + LOG2_INVALID(typeof(ide_dev_desc[i].log2blksz)); ide_dev_desc[i].lba = 0; ide_dev_desc[i].block_read = ide_read; ide_dev_desc[i].block_write = ide_write; @@ -806,6 +808,7 @@ static void ide_ident(block_dev_desc_t *dev_desc) /* assuming HD */ dev_desc->type = DEV_TYPE_HARDDISK; dev_desc->blksz = ATA_BLOCKSIZE; + dev_desc->log2blksz = LOG2(dev_desc->blksz); dev_desc->lun = 0; /* just to fill something in... */
#if 0 /* only used to test the powersaving mode, @@ -1448,6 +1451,7 @@ static void atapi_inquiry(block_dev_desc_t *dev_desc) dev_desc->lun = 0; dev_desc->lba = 0; dev_desc->blksz = 0; + dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz)); dev_desc->type = iobuf[0] & 0x1f;
if ((iobuf[1] & 0x80) == 0x80) @@ -1492,6 +1496,7 @@ static void atapi_inquiry(block_dev_desc_t *dev_desc) dev_desc->blksz = ((unsigned long) iobuf[4] << 24) + ((unsigned long) iobuf[5] << 16) + ((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]); + dev_desc->log2blksz = LOG2(dev_desc->blksz); #ifdef CONFIG_LBA48 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */ dev_desc->lba48 = 0; diff --git a/common/cmd_sata.c b/common/cmd_sata.c index 8d57285..5a57a37 100644 --- a/common/cmd_sata.c +++ b/common/cmd_sata.c @@ -44,6 +44,7 @@ int __sata_initialize(void) sata_dev_desc[i].type = DEV_TYPE_HARDDISK; sata_dev_desc[i].lba = 0; sata_dev_desc[i].blksz = 512; + sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz); sata_dev_desc[i].block_read = sata_read; sata_dev_desc[i].block_write = sata_write;
diff --git a/common/cmd_scsi.c b/common/cmd_scsi.c index 266bfa6..192a439 100644 --- a/common/cmd_scsi.c +++ b/common/cmd_scsi.c @@ -106,6 +106,8 @@ void scsi_scan(int mode) scsi_dev_desc[i].lun=0xff; scsi_dev_desc[i].lba=0; scsi_dev_desc[i].blksz=0; + scsi_dev_desc[i].log2blksz = + LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz)); scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN; scsi_dev_desc[i].vendor[0]=0; scsi_dev_desc[i].product[0]=0; @@ -166,6 +168,8 @@ void scsi_scan(int mode) } scsi_dev_desc[scsi_max_devs].lba=capacity; scsi_dev_desc[scsi_max_devs].blksz=blksz; + scsi_dev_desc[scsi_max_devs].log2blksz = + LOG2(scsi_dev_desc[scsi_max_devs].blksz); scsi_dev_desc[scsi_max_devs].type=perq; init_part(&scsi_dev_desc[scsi_max_devs]); removable: diff --git a/common/usb_storage.c b/common/usb_storage.c index fb322b4..c5db044 100644 --- a/common/usb_storage.c +++ b/common/usb_storage.c @@ -1430,6 +1430,7 @@ int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, *capacity, *blksz); dev_desc->lba = *capacity; dev_desc->blksz = *blksz; + dev_desc->log2blksz = LOG2(dev_desc->blksz); dev_desc->type = perq; USB_STOR_PRINTF(" address %d\n", dev_desc->target); USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); diff --git a/drivers/block/ata_piix.c b/drivers/block/ata_piix.c index 1e33a66..fcae448 100644 --- a/drivers/block/ata_piix.c +++ b/drivers/block/ata_piix.c @@ -406,6 +406,7 @@ void sata_identify(int num, int dev) /* assuming HD */ sata_dev_desc[devno].type = DEV_TYPE_HARDDISK; sata_dev_desc[devno].blksz = ATA_BLOCKSIZE; + sata_dev_desc[devno].log2blksz = LOG2(sata_dev_desc[devno].blksz); sata_dev_desc[devno].lun = 0; /* just to fill something in... */ }
diff --git a/drivers/block/pata_bfin.c b/drivers/block/pata_bfin.c index b847dd9..27ecaf4 100644 --- a/drivers/block/pata_bfin.c +++ b/drivers/block/pata_bfin.c @@ -897,6 +897,8 @@ static void bfin_ata_identify(struct ata_port *ap, int dev) /* assuming HD */ sata_dev_desc[ap->port_no].type = DEV_TYPE_HARDDISK; sata_dev_desc[ap->port_no].blksz = ATA_SECT_SIZE; + sata_dev_desc[ap->port_no].log2blksz = + LOG2(sata_dev_desc[ap->port_no].blksz); sata_dev_desc[ap->port_no].lun = 0; /* just to fill something in... */
printf("PATA device#%d %s is found on ata port#%d.\n", diff --git a/drivers/block/systemace.c b/drivers/block/systemace.c index bf29cbb..b08715f 100644 --- a/drivers/block/systemace.c +++ b/drivers/block/systemace.c @@ -127,6 +127,7 @@ block_dev_desc_t *systemace_get_dev(int dev) systemace_dev.part_type = PART_TYPE_UNKNOWN; systemace_dev.type = DEV_TYPE_HARDDISK; systemace_dev.blksz = 512; + systemace_dev.log2blksz = LOG2(systemace_dev.blksz); systemace_dev.removable = 1; systemace_dev.block_read = systemace_read;
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 7b5fdd9..7db633c 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1174,6 +1174,7 @@ static int mmc_startup(struct mmc *mmc) mmc->block_dev.lun = 0; mmc->block_dev.type = 0; mmc->block_dev.blksz = mmc->read_bl_len; + mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz); mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x", mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), diff --git a/include/part.h b/include/part.h index 12e9b05..f7c7cc5 100644 --- a/include/part.h +++ b/include/part.h @@ -38,6 +38,7 @@ typedef struct block_dev_desc { #endif lbaint_t lba; /* number of blocks */ unsigned long blksz; /* block size */ + int log2blksz; /* for convenience: log2(blksz) */ char vendor [40+1]; /* IDE model, SCSI Vendor */ char product[20+1]; /* IDE Serial no, SCSI product */ char revision[8+1]; /* firmware revision */ @@ -58,6 +59,10 @@ typedef struct block_dev_desc { #define BLOCK_CNT(size, block_dev_desc) (PAD_COUNT(size, block_dev_desc->blksz)) #define PAD_TO_BLOCKSIZE(size, block_dev_desc) \ (PAD_SIZE(size, block_dev_desc->blksz)) +#define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \ + ((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \ + ((x & 0xffff0000) ? 16 : 0)) +#define LOG2_INVALID(type) ((type)((sizeof(type)<<3)-1))
/* Interface types: */ #define IF_TYPE_UNKNOWN 0