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authorRaghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>2017-12-27 07:34:36 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-01-04 07:26:42 +0300
commit4b000227535500550547313bf20e3be9083dc724 (patch)
tree97d9711d26b5599a3ebc105e01f86d5ce5f9e5a8 /drivers/scsi/aacraid/aachba.c
parenta25b6ca1a9225610671cb850432eade5e057edc1 (diff)
downloadlinux-4b000227535500550547313bf20e3be9083dc724.tar.xz
scsi: aacraid: Create helper functions to get lun info
Created inline function to retrieve lun info for each device from the phy luns structure. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/aacraid/aachba.c')
-rw-r--r--drivers/scsi/aacraid/aachba.c54
1 files changed, 42 insertions, 12 deletions
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 43a3c1192282..fa0132bcd2f3 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -42,6 +42,8 @@
#include <linux/highmem.h> /* For flush_kernel_dcache_page */
#include <linux/module.h>
+#include <asm/unaligned.h>
+
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
@@ -1844,7 +1846,41 @@ out:
mem_free_all:
kfree(phys_luns);
goto out;
+}
+
+static inline u32 aac_get_safw_phys_lun_count(struct aac_dev *dev)
+{
+ return get_unaligned_be32(&dev->safw_phys_luns->list_length[0]);
+}
+
+static inline u32 aac_get_safw_phys_bus(struct aac_dev *dev, int lun)
+{
+ return dev->safw_phys_luns->lun[lun].level2[1] & 0x3f;
+}
+
+static inline u32 aac_get_safw_phys_target(struct aac_dev *dev, int lun)
+{
+ return dev->safw_phys_luns->lun[lun].level2[0];
+}
+static inline u32 aac_get_safw_phys_expose_flag(struct aac_dev *dev, int lun)
+{
+ return dev->safw_phys_luns->lun[lun].bus >> 6;
+}
+
+static inline u32 aac_get_safw_phys_attribs(struct aac_dev *dev, int lun)
+{
+ return dev->safw_phys_luns->lun[lun].node_ident[9];
+}
+
+static inline u32 aac_get_safw_phys_nexus(struct aac_dev *dev, int lun)
+{
+ return *((u32 *)&dev->safw_phys_luns->lun[lun].node_ident[12]);
+}
+
+static inline u32 aac_get_safw_phys_device_type(struct aac_dev *dev, int lun)
+{
+ return dev->safw_phys_luns->lun[lun].node_ident[8];
}
/**
@@ -1862,22 +1898,16 @@ static void aac_set_safw_attr_all_targets(struct aac_dev *dev, int rescan)
u32 i, bus, target;
u8 expose_flag, attribs;
u8 devtype;
- struct aac_ciss_phys_luns_resp *phys_luns;
-
- phys_luns = dev->safw_phys_luns;
- lun_count = ((phys_luns->list_length[0] << 24)
- + (phys_luns->list_length[1] << 16)
- + (phys_luns->list_length[2] << 8)
- + (phys_luns->list_length[3])) / 24;
+ lun_count = aac_get_safw_phys_lun_count(dev);
for (i = 0; i < lun_count; ++i) {
- bus = phys_luns->lun[i].level2[1] & 0x3f;
- target = phys_luns->lun[i].level2[0];
- expose_flag = phys_luns->lun[i].bus >> 6;
- attribs = phys_luns->lun[i].node_ident[9];
- nexus = *((u32 *) &phys_luns->lun[i].node_ident[12]);
+ bus = aac_get_safw_phys_bus(dev, i);
+ target = aac_get_safw_phys_target(dev, i);
+ expose_flag = aac_get_safw_phys_expose_flag(dev, i);
+ attribs = aac_get_safw_phys_attribs(dev, i);
+ nexus = aac_get_safw_phys_nexus(dev, i);
if (bus >= AAC_MAX_BUSES || target >= AAC_MAX_TARGETS)
continue;