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Commit 1f4c7c38 authored Aug 23, 2017 by Joe Carnuccio Committed by Martin K. Petersen Aug 24, 2017

scsi: qla2xxx: Add LR distance support from nvram bit



Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent 92d4408e

drivers/scsi/qla2xxx/qla_def.h

+8 −1

Original line number	Diff line number	Diff line
		@@ -3471,7 +3471,7 @@ struct qla_hw_data {
		uint32_t using_lr_setting:1;
		} flags;

		u8 long_range_distance; /* 32G & above */
		uint16_t long_range_distance; /* 32G & above */
		#define LR_DISTANCE_5K 1
		#define LR_DISTANCE_10K 0

		@@ -4027,6 +4027,7 @@ struct qla_hw_data {

		struct qlt_hw_data tgt;
		int allow_cna_fw_dump;
		uint32_t fw_ability_mask;
		uint16_t min_link_speed;
		uint16_t max_speed_sup;

		@@ -4034,6 +4035,12 @@ struct qla_hw_data {
		uint16_t nvme_last_rptd_aen; /* Last recorded aen count */
		};

		#define FW_ABILITY_MAX_SPEED_MASK 0xFUL
		#define FW_ABILITY_MAX_SPEED_16G 0x0
		#define FW_ABILITY_MAX_SPEED_32G 0x1
		#define FW_ABILITY_MAX_SPEED(ha) \
		(ha->fw_ability_mask & FW_ABILITY_MAX_SPEED_MASK)

		/*
		* Qlogic scsi host structure
		*/

drivers/scsi/qla2xxx/qla_fw.h

+15 −9

Original line number	Diff line number	Diff line
		@@ -1699,6 +1699,15 @@ struct access_chip_rsp_84xx {
		#define FAC_OPT_CMD_UNLOCK_SEMAPHORE 0x04
		#define FAC_OPT_CMD_GET_SECTOR_SIZE 0x05

		/* enhanced features bit definitions */
		#define NEF_LR_DIST_ENABLE BIT_0

		/* LR Distance bit positions */
		#define LR_DIST_NV_POS 2
		#define LR_DIST_FW_POS 12
		#define LR_DIST_FW_SHIFT (LR_DIST_FW_POS - LR_DIST_NV_POS)
		#define LR_DIST_FW_FIELD(x) ((x) << LR_DIST_FW_SHIFT & 0xf000)

		struct nvram_81xx {
		/* NVRAM header. */
		uint8_t id[4];
		@@ -1841,16 +1850,13 @@ struct nvram_81xx {
		uint8_t reserved_21[16];
		uint16_t reserved_22[3];

		/*
		/* Offset 406 (0x196) Enhanced Features
		* BIT 0 = Extended BB credits for LR
		* BIT 1 = Virtual Fabric Enable
		* BIT 2 = Enhanced Features Unused
		* BIT 3-7 = Enhanced Features Reserved
		* BIT 2-5 = Distance Support if BIT 0 is on
		* BIT 6-15 = Unused
		*/
		/* Enhanced Features */
		uint8_t enhanced_features;

		uint8_t reserved_23;
		uint16_t enhanced_features;
		uint16_t reserved_24[4];

		/* Offset 416. */

drivers/scsi/qla2xxx/qla_mbx.c

+38 −18

Original line number	Diff line number	Diff line
		@@ -567,6 +567,28 @@ qla2x00_load_ram(scsi_qla_host_t *vha, dma_addr_t req_dma, uint32_t risc_addr,

		#define EXTENDED_BB_CREDITS BIT_0
		#define NVME_ENABLE_FLAG BIT_3
		static inline uint16_t qla25xx_set_sfp_lr_dist(struct qla_hw_data *ha)
		{
		uint16_t mb4 = BIT_0;

		if (IS_QLA83XX(ha) \|\| IS_QLA27XX(ha))
		mb4 \|= ha->long_range_distance << LR_DIST_FW_POS;

		return mb4;
		}

		static inline uint16_t qla25xx_set_nvr_lr_dist(struct qla_hw_data *ha)
		{
		uint16_t mb4 = BIT_0;

		if (IS_QLA83XX(ha) \|\| IS_QLA27XX(ha)) {
		struct nvram_81xx *nv = ha->nvram;

		mb4 \|= LR_DIST_FW_FIELD(nv->enhanced_features);
		}

		return mb4;
		}

		/*
		* qla2x00_execute_fw
		@@ -602,27 +624,25 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
		mcp->mb[2] = LSW(risc_addr);
		mcp->mb[3] = 0;
		mcp->mb[4] = 0;
		ha->flags.using_lr_setting = 0;
		if (IS_QLA25XX(ha) \|\| IS_QLA81XX(ha) \|\| IS_QLA83XX(ha) \|\|
		IS_QLA27XX(ha)) {
		if (ql2xautodetectsfp) {
		if (ha->flags.detected_lr_sfp) {
		mcp->mb[4] \|= EXTENDED_BB_CREDITS;
		if (IS_QLA27XX(ha))
		mcp->mb[4] \|=
		(u16)ha->long_range_distance << 12;
		qla25xx_set_sfp_lr_dist(ha);
		ha->flags.using_lr_setting = 1;
		}
		} else {
		struct nvram_81xx *nv = ha->nvram;

		/* set LR distance if specified in nvram */
		if (nv->enhanced_features &
		EXTENDED_BB_CREDITS) {
		mcp->mb[4] \|= EXTENDED_BB_CREDITS;
		NEF_LR_DIST_ENABLE) {
		mcp->mb[4] \|=
		qla25xx_set_nvr_lr_dist(ha);
		ha->flags.using_lr_setting = 1;
		}
		}
		} else {
		ha->flags.using_lr_setting = 0;
		}

		if (ql2xnvmeenable && IS_QLA27XX(ha))
		@@ -648,7 +668,7 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
		mcp->mb[4] \|= ENABLE_EXCHANGE_OFFLD;

		mcp->out_mb \|= MBX_4\|MBX_3\|MBX_2\|MBX_1;
		mcp->in_mb \|= MBX_1;
		mcp->in_mb \|= MBX_3 \| MBX_2 \| MBX_1;
		} else {
		mcp->mb[1] = LSW(risc_addr);
		mcp->out_mb \|= MBX_1;
		@@ -667,10 +687,13 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
		"Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
		} else {
		if (IS_FWI2_CAPABLE(ha)) {
		ha->fw_ability_mask = mcp->mb[3] << 16 \| mcp->mb[2];
		ql_dbg(ql_dbg_mbx, vha, 0x119a,
		"fw_ability_mask=%x.\n", ha->fw_ability_mask);
		ql_dbg(ql_dbg_mbx, vha, 0x1027,
		"exchanges=%x.\n", mcp->mb[1]);
		if (IS_QLA27XX(ha)) {
		ha->max_speed_sup = mcp->mb[2] & 1;
		if (IS_QLA83XX(ha) \|\| IS_QLA27XX(ha)) {
		ha->max_speed_sup = mcp->mb[2] & BIT_0;
		ql_dbg(ql_dbg_mbx, vha, 0x119b,
		"Maximum speed supported=%s.\n",
		ha->max_speed_sup ? "32Gps" : "16Gps");
		@@ -685,12 +708,9 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
		"unknown");
		}
		}
		ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1027,
		"Done.\n");
		} else {
		ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1028,
		"Done %s.\n", __func__);
		}
		ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1028,
		"Done.\n");
		}

		return rval;