Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b7cc176c9eb3aa6989ac099efd8bdd6d0eaa784a
Commit:     b7cc176c9eb3aa6989ac099efd8bdd6d0eaa784a
Parent:     338c9161e406591afbc1a6635a68d3b6d5362e00
Author:     Joe Carnuccio <[EMAIL PROTECTED]>
AuthorDate: Thu Sep 20 14:07:35 2007 -0700
Committer:  James Bottomley <[EMAIL PROTECTED]>
CommitDate: Fri Oct 12 14:49:42 2007 -0400

    [SCSI] qla2xxx: Allow region-based flash-part accesses.
    
    Additional cleanups and
    Signed-off-by: Andrew Vasquez <[EMAIL PROTECTED]>
    Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
---
 drivers/scsi/qla2xxx/qla_attr.c |  108 ++++++++++++++++++++++++++++++++-------
 drivers/scsi/qla2xxx/qla_def.h  |    2 +
 drivers/scsi/qla2xxx/qla_fw.h   |    2 +
 drivers/scsi/qla2xxx/qla_sup.c  |    4 +-
 4 files changed, 96 insertions(+), 20 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 0f2a9f5..8e7e00c 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -175,10 +175,10 @@ qla2x00_sysfs_read_optrom(struct kobject *kobj,
 
        if (ha->optrom_state != QLA_SREADING)
                return 0;
-       if (off > ha->optrom_size)
+       if (off > ha->optrom_region_size)
                return 0;
-       if (off + count > ha->optrom_size)
-               count = ha->optrom_size - off;
+       if (off + count > ha->optrom_region_size)
+               count = ha->optrom_region_size - off;
 
        memcpy(buf, &ha->optrom_buffer[off], count);
 
@@ -195,10 +195,10 @@ qla2x00_sysfs_write_optrom(struct kobject *kobj,
 
        if (ha->optrom_state != QLA_SWRITING)
                return -EINVAL;
-       if (off > ha->optrom_size)
+       if (off > ha->optrom_region_size)
                return -ERANGE;
-       if (off + count > ha->optrom_size)
-               count = ha->optrom_size - off;
+       if (off + count > ha->optrom_region_size)
+               count = ha->optrom_region_size - off;
 
        memcpy(&ha->optrom_buffer[off], buf, count);
 
@@ -222,12 +222,16 @@ qla2x00_sysfs_write_optrom_ctl(struct kobject *kobj,
 {
        struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
            struct device, kobj)));
-       int val;
+       uint32_t start = 0;
+       uint32_t size = ha->optrom_size;
+       int val, valid;
 
        if (off)
                return 0;
 
-       if (sscanf(buf, "%d", &val) != 1)
+       if (sscanf(buf, "%d:%x:%x", &val, &start, &size) < 1)
+               return -EINVAL;
+       if (start > ha->optrom_size)
                return -EINVAL;
 
        switch (val) {
@@ -237,6 +241,11 @@ qla2x00_sysfs_write_optrom_ctl(struct kobject *kobj,
                        break;
 
                ha->optrom_state = QLA_SWAITING;
+
+               DEBUG2(qla_printk(KERN_INFO, ha,
+                   "Freeing flash region allocation -- 0x%x bytes.\n",
+                   ha->optrom_region_size));
+
                vfree(ha->optrom_buffer);
                ha->optrom_buffer = NULL;
                break;
@@ -244,44 +253,107 @@ qla2x00_sysfs_write_optrom_ctl(struct kobject *kobj,
                if (ha->optrom_state != QLA_SWAITING)
                        break;
 
+               if (start & 0xfff) {
+                       qla_printk(KERN_WARNING, ha,
+                           "Invalid start region 0x%x/0x%x.\n", start, size);
+                       return -EINVAL;
+               }
+
+               ha->optrom_region_start = start;
+               ha->optrom_region_size = start + size > ha->optrom_size ?
+                   ha->optrom_size - start : size;
+
                ha->optrom_state = QLA_SREADING;
-               ha->optrom_buffer = (uint8_t *)vmalloc(ha->optrom_size);
+               ha->optrom_buffer = vmalloc(ha->optrom_region_size);
                if (ha->optrom_buffer == NULL) {
                        qla_printk(KERN_WARNING, ha,
                            "Unable to allocate memory for optrom retrieval "
-                           "(%x).\n", ha->optrom_size);
+                           "(%x).\n", ha->optrom_region_size);
 
                        ha->optrom_state = QLA_SWAITING;
                        return count;
                }
 
-               memset(ha->optrom_buffer, 0, ha->optrom_size);
-               ha->isp_ops->read_optrom(ha, ha->optrom_buffer, 0,
-                   ha->optrom_size);
+               DEBUG2(qla_printk(KERN_INFO, ha,
+                   "Reading flash region -- 0x%x/0x%x.\n",
+                   ha->optrom_region_start, ha->optrom_region_size));
+
+               memset(ha->optrom_buffer, 0, ha->optrom_region_size);
+               ha->isp_ops->read_optrom(ha, ha->optrom_buffer,
+                   ha->optrom_region_start, ha->optrom_region_size);
                break;
        case 2:
                if (ha->optrom_state != QLA_SWAITING)
                        break;
 
+               /*
+                * We need to be more restrictive on which FLASH regions are
+                * allowed to be updated via user-space.  Regions accessible
+                * via this method include:
+                *
+                * ISP21xx/ISP22xx/ISP23xx type boards:
+                *
+                *      0x000000 -> 0x020000 -- Boot code.
+                *
+                * ISP2322/ISP24xx type boards:
+                *
+                *      0x000000 -> 0x07ffff -- Boot code.
+                *      0x080000 -> 0x0fffff -- Firmware.
+                *
+                * ISP25xx type boards:
+                *
+                *      0x000000 -> 0x07ffff -- Boot code.
+                *      0x080000 -> 0x0fffff -- Firmware.
+                *      0x120000 -> 0x12ffff -- VPD and HBA parameters.
+                */
+               valid = 0;
+               if (ha->optrom_size == OPTROM_SIZE_2300 && start == 0)
+                       valid = 1;
+               else if (start == (FA_BOOT_CODE_ADDR*4) ||
+                   start == (FA_RISC_CODE_ADDR*4))
+                       valid = 1;
+               else if (IS_QLA25XX(ha) && start == (FA_VPD_NVRAM_ADDR*4))
+                   valid = 1;
+               if (!valid) {
+                       qla_printk(KERN_WARNING, ha,
+                           "Invalid start region 0x%x/0x%x.\n", start, size);
+                       return -EINVAL;
+               }
+
+               ha->optrom_region_start = start;
+               ha->optrom_region_size = start + size > ha->optrom_size ?
+                   ha->optrom_size - start : size;
+
                ha->optrom_state = QLA_SWRITING;
-               ha->optrom_buffer = (uint8_t *)vmalloc(ha->optrom_size);
+               ha->optrom_buffer = vmalloc(ha->optrom_region_size);
                if (ha->optrom_buffer == NULL) {
                        qla_printk(KERN_WARNING, ha,
                            "Unable to allocate memory for optrom update "
-                           "(%x).\n", ha->optrom_size);
+                           "(%x).\n", ha->optrom_region_size);
 
                        ha->optrom_state = QLA_SWAITING;
                        return count;
                }
-               memset(ha->optrom_buffer, 0, ha->optrom_size);
+
+               DEBUG2(qla_printk(KERN_INFO, ha,
+                   "Staging flash region write -- 0x%x/0x%x.\n",
+                   ha->optrom_region_start, ha->optrom_region_size));
+
+               memset(ha->optrom_buffer, 0, ha->optrom_region_size);
                break;
        case 3:
                if (ha->optrom_state != QLA_SWRITING)
                        break;
 
-               ha->isp_ops->write_optrom(ha, ha->optrom_buffer, 0,
-                   ha->optrom_size);
+               DEBUG2(qla_printk(KERN_INFO, ha,
+                   "Writing flash region -- 0x%x/0x%x.\n",
+                   ha->optrom_region_start, ha->optrom_region_size));
+
+               ha->isp_ops->write_optrom(ha, ha->optrom_buffer,
+                   ha->optrom_region_start, ha->optrom_region_size);
                break;
+       default:
+               count = -EINVAL;
        }
        return count;
 }
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 4af0856..e1e3428 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2478,6 +2478,8 @@ typedef struct scsi_qla_host {
 #define QLA_SWAITING   0
 #define QLA_SREADING   1
 #define QLA_SWRITING   2
+       uint32_t        optrom_region_start;
+       uint32_t        optrom_region_size;
 
         /* PCI expansion ROM image information. */
 #define ROM_CODE_TYPE_BIOS     0
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index 99fe496..d5344d7 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -779,6 +779,8 @@ struct device_reg_24xx {
 #define FA_NVRAM_VPD_SIZE      0x200
 #define FA_NVRAM_VPD0_ADDR     0x00
 #define FA_NVRAM_VPD1_ADDR     0x100
+
+#define FA_BOOT_CODE_ADDR      0x00000
                                        /*
                                         * RISC code begins at offset 512KB
                                         * within flash. Consisting of two
diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c
index ad3d1de..40b059f 100644
--- a/drivers/scsi/qla2xxx/qla_sup.c
+++ b/drivers/scsi/qla2xxx/qla_sup.c
@@ -559,7 +559,7 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t 
*dwptr, uint32_t faddr,
        ret = QLA_SUCCESS;
 
        /* Prepare burst-capable write on supported ISPs. */
-       if (IS_QLA25XX(ha) && !(faddr & ~OPTROM_BURST_SIZE) &&
+       if (IS_QLA25XX(ha) && !(faddr & 0xfff) &&
            dwords > OPTROM_BURST_DWORDS) {
                optrom = dma_alloc_coherent(&ha->pdev->dev, OPTROM_BURST_SIZE,
                    &optrom_dma, GFP_KERNEL);
@@ -1824,7 +1824,7 @@ qla25xx_read_optrom_data(struct scsi_qla_host *ha, 
uint8_t *buf,
        uint8_t *pbuf;
        uint32_t faddr, left, burst;
 
-       if (offset & ~OPTROM_BURST_SIZE)
+       if (offset & 0xfff)
                goto slow_read;
        if (length < OPTROM_BURST_SIZE)
                goto slow_read;
-
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