[PATCH 12/24] aacraid: Retrieve Queue Depth from Adapter FW

Raghava Aditya Renukunta
2017-01-24T00:47:02Z

Retrieved queue depth from fw and saved it for future use.
Only applicable for HBA1000 drives.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
---
drivers/scsi/aacraid/aachba.c | 84 ++++++++++++++++++++++++++++++++++++++++-
drivers/scsi/aacraid/aacraid.h | 85 +++++++++++++++++++++++++++++++++++++++++-
2 files changed, 167 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index e762c7b..10a26046 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1516,6 +1516,83 @@ static int aac_scsi_32_64(struct fib * fib, struct scsi_cmnd * cmd)
return aac_scsi_32(fib, cmd);
}

+int aac_issue_bmic_identify(struct aac_dev *dev, u32 bus, u32 target)
+{
+ struct fib *fibptr;
+ int rcode = -1;
+ u16 fibsize, datasize;
+ struct aac_srb *srbcmd;
+ struct sgmap64 *sg64;
+ struct aac_ciss_identify_pd *identify_resp;
+ dma_addr_t addr;
+ u32 vbus, vid;
+ u16 temp;
+
+ fibptr = aac_fib_alloc(dev);
+ if (!fibptr)
+ return -ENOMEM;
+
+ temp = AAC_MAX_LUN + target;
+
+ fibsize = sizeof(struct aac_srb) -
+ sizeof(struct sgentry) + sizeof(struct sgentry64);
+ datasize = sizeof(struct aac_ciss_identify_pd);
+
+ identify_resp = (struct aac_ciss_identify_pd *)
+ pci_alloc_consistent(dev->pdev, datasize, &addr);
+
+ if (identify_resp != NULL) {
+ vbus = (u32)le16_to_cpu(
+ dev->supplement_adapter_info.VirtDeviceBus);
+ vid = (u32)le16_to_cpu(
+ dev->supplement_adapter_info.VirtDeviceTarget);
+
+ aac_fib_init(fibptr);
+ srbcmd = (struct aac_srb *) fib_data(fibptr);
+
+ srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);
+ srbcmd->channel = cpu_to_le32(vbus);
+ srbcmd->id = cpu_to_le32(vid);
+ srbcmd->lun = 0;
+ srbcmd->flags = cpu_to_le32(SRB_DataIn);
+ srbcmd->timeout = cpu_to_le32(10);
+ srbcmd->retry_limit = 0;
+ srbcmd->cdb_size = cpu_to_le32(12);
+ srbcmd->count = cpu_to_le32(datasize);
+
+ memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
+ srbcmd->cdb[0] = 0x26;
+ srbcmd->cdb[2] = (u8)(temp & 0x00FF);
+
+ srbcmd->cdb[6] = CISS_IDENTIFY_PHYSICAL_DEVICE;
+
+ sg64 = (struct sgmap64 *)&srbcmd->sg;
+ sg64->count = cpu_to_le32(1);
+ sg64->sg[0].addr[1] = cpu_to_le32((u32)(((addr) >> 16) >> 16));
+ sg64->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
+ sg64->sg[0].count = cpu_to_le32(datasize);
+
+ rcode = aac_fib_send(ScsiPortCommand64,
+ fibptr, fibsize, FsaNormal, 1, 1, NULL, NULL);
+
+ if (identify_resp->current_queue_depth_limit <= 0 ||
+ identify_resp->current_queue_depth_limit > 32)
+ dev->hba_map[bus][target].qd_limit = 32;
+ else
+ dev->hba_map[bus][target].qd_limit =
+ identify_resp->current_queue_depth_limit;
+
+ pci_free_consistent(dev->pdev, datasize,
+ (void *)identify_resp, addr);
+
+ aac_fib_complete(fibptr);
+ }
+
+ aac_fib_free(fibptr);
+
+ return rcode;
+}
+
/**
* aac_update hba_map()- update current hba map with data from FW
* @dev: aac_dev structure
@@ -1565,6 +1642,9 @@ void aac_update_hba_map(struct aac_dev *dev,
if (devtype != AAC_DEVTYPE_NATIVE_RAW)
goto update_devtype;

+ if (aac_issue_bmic_identify(dev, bus, target) < 0)
+ dev->hba_map[bus][target].qd_limit = 32;
+
update_devtype:
dev->hba_map[bus][target].devtype = devtype;
}
@@ -1708,8 +1788,10 @@ int aac_get_adapter_info(struct aac_dev* dev)

/* reset all previous mapped devices (i.e. for init. after IOP_RESET) */
for (bus = 0; bus < AAC_MAX_BUSES; bus++) {
- for (target = 0; target < AAC_MAX_TARGETS; target++)
+ for (target = 0; target < AAC_MAX_TARGETS; target++) {
dev->hba_map[bus][target].devtype = 0;
+ dev->hba_map[bus][target].qd_limit = 0;
+ }
}

/*
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 03250b5..23c00ab 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -74,7 +74,7 @@ enum {
#define AAC_NUM_IO_FIB (1024 - AAC_NUM_MGT_FIB)
#define AAC_NUM_FIB (AAC_NUM_IO_FIB + AAC_NUM_MGT_FIB)

-#define AAC_MAX_LUN (8)
+#define AAC_MAX_LUN (256)

#define AAC_MAX_HOSTPHYSMEMPAGES (0xfffff)
#define AAC_MAX_32BIT_SGBCOUNT ((unsigned short)256)
@@ -89,6 +89,7 @@ enum {

#define CISS_REPORT_PHYSICAL_LUNS 0xc3
#define WRITE_HOST_WELLNESS 0xa5
+#define CISS_IDENTIFY_PHYSICAL_DEVICE 0x15
#define BMIC_IN 0x26
#define BMIC_OUT 0x27

@@ -110,6 +111,86 @@ struct aac_ciss_phys_luns_resp {
*/
#define AAC_MAX_HRRQ 64

+#pragma pack(1)
+
+struct aac_ciss_identify_pd {
+ u8 scsi_bus; /* SCSI Bus number on controller */
+ u8 scsi_id; /* SCSI ID on this bus */
+ u16 block_size; /* sector size in bytes */
+ u32 total_blocks; /* number for sectors on drive */
+ u32 reserved_blocks; /* controller reserved (RIS) */
+ u8 model[40]; /* Physical Drive Model */
+ u8 serial_number[40]; /* Drive Serial Number */
+ u8 firmware_revision[8]; /* drive firmware revision */
+ u8 scsi_inquiry_bits; /* inquiry byte 7 bits */
+ u8 compaq_drive_stamp; /* 0 means drive not stamped */
+ u8 last_failure_reason;
+
+ u8 flags;
+ u8 more_flags;
+ u8 scsi_lun; /* SCSI LUN for phys drive */
+ u8 yet_more_flags;
+ u8 even_more_flags;
+ u32 spi_speed_rules; /* SPI Speed :Ultra disable diagnose */
+ u8 phys_connector[2]; /* connector number on controller */
+ u8 phys_box_on_bus; /* phys enclosure this drive resides */
+ u8 phys_bay_in_box; /* phys drv bay this drive resides */
+ u32 rpm; /* Drive rotational speed in rpm */
+ u8 device_type; /* type of drive */
+ u8 sata_version; /* only valid when drive_type is SATA */
+ u64 big_total_block_count;
+ u64 ris_starting_lba;
+ u32 ris_size;
+ u8 wwid[20];
+ u8 controller_phy_map[32];
+ u16 phy_count;
+ u8 phy_connected_dev_type[256];
+ u8 phy_to_drive_bay_num[256];
+ u16 phy_to_attached_dev_index[256];
+ u8 box_index;
+ u8 spitfire_support;
+ u16 extra_physical_drive_flags;
+ u8 negotiated_link_rate[256];
+ u8 phy_to_phy_map[256];
+ u8 redundant_path_present_map;
+ u8 redundant_path_failure_map;
+ u8 active_path_number;
+ u16 alternate_paths_phys_connector[8];
+ u8 alternate_paths_phys_box_on_port[8];
+ u8 multi_lun_device_lun_count;
+ u8 minimum_good_fw_revision[8];
+ u8 unique_inquiry_bytes[20];
+ u8 current_temperature_degreesC;
+ u8 temperature_threshold_degreesC;
+ u8 max_temperature_degreesC;
+ u8 logical_blocks_per_phys_block_exp; /* phyblocksize = 512 * 2^exp */
+ u16 current_queue_depth_limit;
+ u8 switch_name[10];
+ u16 switch_port;
+ u8 alternate_paths_switch_name[40];
+ u8 alternate_paths_switch_port[8];
+ u16 power_on_hours; /* valid only if gas gauge supported */
+ u16 percent_endurance_used; /* valid only if gas gauge supported. */
+ u8 drive_authentication;
+ u8 smart_carrier_authentication;
+ u8 smart_carrier_app_fw_version;
+ u8 smart_carrier_bootloader_fw_version;
+ u8 SanitizeSecureEraseSupport;
+ u8 DriveKeyFlags;
+ u8 encryption_key_name[64];
+ u32 misc_drive_flags;
+ u16 dek_index;
+ u16 drive_encryption_flags;
+ u8 sanitize_maximum_time[6];
+ u8 connector_info_mode;
+ u8 connector_info_number[4];
+ u8 long_connector_name[64];
+ u8 device_unique_identifier[16];
+ u8 padto_2K[17];
+};
+
+#pragma pack()
+
/*
* These macros convert from physical channels to virtual channels
*/
@@ -1032,6 +1113,7 @@ struct aac_hba_map_info {
u8 devtype; /* device type */
u8 reset_state; /* 0 - no reset, 1..x - */
/* after xth TM LUN reset */
+ u16 qd_limit;
u8 expose; /*checks if to expose or not*/
};

@@ -2240,6 +2322,7 @@ static inline unsigned int cap_to_cyls(sector_t capacity, unsigned divisor)
int aac_acquire_irq(struct aac_dev *dev);
void aac_free_irq(struct aac_dev *dev);
int aac_report_phys_luns(struct aac_dev *dev, struct fib *fibptr);
+int aac_issue_bmic_identify(struct aac_dev *dev, u32 bus, u32 target);
const char *aac_driverinfo(struct Scsi_Host *);
void aac_fib_vector_assign(struct aac_dev *dev);
struct fib *aac_fib_alloc(struct aac_dev *dev);
--
2.7.4