[U-Boot] [PATCH v2] part/dev_desc: Add log2 of Blocksize to block_dev_desc data struct.
egbert.eich at gmail.com
egbert.eich at gmail.com
Tue Mar 26 13:05:05 CET 2013
From: Egbert Eich <eich at 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 at 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
--
1.7.7
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