diff options
| -rw-r--r-- | drivers/block/cciss.c | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 05dfe357527..8791e43cad5 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -1291,13 +1291,19 @@ static void cciss_update_drive_info(int ctlr, int drv_index) if (inq_buff == NULL) goto mem_msg; + /* testing to see if 16-byte CDBs are already being used */ + if (h->cciss_read == CCISS_READ_16) { + cciss_read_capacity_16(h->ctlr, drv_index, 1, + &total_size, &block_size); + goto geo_inq; + } + cciss_read_capacity(ctlr, drv_index, 1, &total_size, &block_size); - /* total size = last LBA + 1 */ - /* FFFFFFFF + 1 = 0, cannot have a logical volume of size 0 */ - /* so we assume this volume this must be >2TB in size */ - if (total_size == (__u32) 0) { + /* if read_capacity returns all F's this volume is >2TB in size */ + /* so we switch to 16-byte CDB's for all read/write ops */ + if (total_size == 0xFFFFFFFFULL) { cciss_read_capacity_16(ctlr, drv_index, 1, &total_size, &block_size); h->cciss_read = CCISS_READ_16; @@ -1306,6 +1312,7 @@ static void cciss_update_drive_info(int ctlr, int drv_index) h->cciss_read = CCISS_READ_10; h->cciss_write = CCISS_WRITE_10; } +geo_inq: cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, inq_buff, &h->drv[drv_index]); @@ -1917,13 +1924,14 @@ static void cciss_geometry_inquiry(int ctlr, int logvol, drv->raid_level = inq_buff->data_byte[8]; } drv->block_size = block_size; - drv->nr_blocks = total_size; + drv->nr_blocks = total_size + 1; t = drv->heads * drv->sectors; if (t > 1) { - unsigned rem = sector_div(total_size, t); + sector_t real_size = total_size + 1; + unsigned long rem = sector_div(real_size, t); if (rem) - total_size++; - drv->cylinders = total_size; + real_size++; + drv->cylinders = real_size; } } else { /* Get geometry failed */ printk(KERN_WARNING "cciss: reading geometry failed\n"); @@ -1953,16 +1961,16 @@ cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, ctlr, buf, sizeof(ReadCapdata_struct), 1, logvol, 0, NULL, TYPE_CMD); if (return_code == IO_OK) { - *total_size = be32_to_cpu(*(__u32 *) buf->total_size)+1; + *total_size = be32_to_cpu(*(__u32 *) buf->total_size); *block_size = be32_to_cpu(*(__u32 *) buf->block_size); } else { /* read capacity command failed */ printk(KERN_WARNING "cciss: read capacity failed\n"); *total_size = 0; *block_size = BLOCK_SIZE; } - if (*total_size != (__u32) 0) + if (*total_size != 0) printk(KERN_INFO " blocks= %llu block_size= %d\n", - (unsigned long long)*total_size, *block_size); + (unsigned long long)*total_size+1, *block_size); kfree(buf); return; } @@ -1989,7 +1997,7 @@ cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, 1, logvol, 0, NULL, TYPE_CMD); } if (return_code == IO_OK) { - *total_size = be64_to_cpu(*(__u64 *) buf->total_size)+1; + *total_size = be64_to_cpu(*(__u64 *) buf->total_size); *block_size = be32_to_cpu(*(__u32 *) buf->block_size); } else { /* read capacity command failed */ printk(KERN_WARNING "cciss: read capacity failed\n"); @@ -1997,7 +2005,7 @@ cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, *block_size = BLOCK_SIZE; } printk(KERN_INFO " blocks= %llu block_size= %d\n", - (unsigned long long)*total_size, *block_size); + (unsigned long long)*total_size+1, *block_size); kfree(buf); return; } @@ -3119,8 +3127,9 @@ static void cciss_getgeometry(int cntl_num) } cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); - /* total_size = last LBA + 1 */ - if(total_size == (__u32) 0) { + /* If read_capacity returns all F's the logical is >2TB */ + /* so we switch to 16-byte CDBs for all read/write ops */ + if(total_size == 0xFFFFFFFFULL) { cciss_read_capacity_16(cntl_num, i, 0, &total_size, &block_size); hba[cntl_num]->cciss_read = CCISS_READ_16; |