[SCSI] qla2xxx: Enable target mode support for ISP83xx.

Signed-off-by: Arun Easi <arun.easi@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

8 files changed, 187 insertions, 25 deletions

diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index f7cdd259ef0b..e690d052246a 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -39,7 +39,7 @@
  * | MultiQ                       |       0xc00c       |                |
  * | Misc                         |       0xd010       |                |
  * | Target Mode                  |       0xe06f       |                |
- * | Target Mode Management       |       0xf071       |                |
+ * | Target Mode Management       |       0xf072       |                |
  * | Target Mode Task Management  |       0x1000b      |                |
  * ----------------------------------------------------------------------
  */
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 06c6271d5911..b5fc478e90c1 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -537,6 +537,8 @@ struct device_reg_25xxmq {
         uint32_t req_q_out;
         uint32_t rsp_q_in;
         uint32_t rsp_q_out;
+        uint32_t atio_q_in;
+        uint32_t atio_q_out;
 };
 
 typedef union {
@@ -563,6 +565,9 @@ typedef union {
          &(reg)->u.isp2100.mailbox5 : \
          &(reg)->u.isp2300.rsp_q_out)
 
+#define ISP_ATIO_Q_IN(vha) (vha->hw->tgt.atio_q_in)
+#define ISP_ATIO_Q_OUT(vha) (vha->hw->tgt.atio_q_out)
+
 #define MAILBOX_REG(ha, reg, num) \
         (IS_QLA2100(ha) || IS_QLA2200(ha) ? \
          (num < 8 ? \
@@ -2559,6 +2564,8 @@ struct qlt_hw_data {
         struct atio *atio_ring_ptr;     /* Current address. */
         uint16_t atio_ring_index; /* Current index. */
         uint16_t atio_q_length;
+        uint32_t __iomem *atio_q_in;
+        uint32_t __iomem *atio_q_out;
 
         void *target_lport_ptr;
         struct qla_tgt_func_tmpl *tgt_ops;
@@ -2790,6 +2797,7 @@ struct qla_hw_data {
 #define IS_PI_SPLIT_DET_CAPABLE_HBA(ha) (IS_QLA83XX(ha))
 #define IS_PI_SPLIT_DET_CAPABLE(ha)     (IS_PI_SPLIT_DET_CAPABLE_HBA(ha) && \
     (((ha)->fw_attributes_h << 16 | (ha)->fw_attributes) & BIT_22))
+#define IS_ATIO_MSIX_CAPABLE(ha) (IS_QLA83XX(ha))
 
         /* HBA serial number */
         uint8_t         serial0;
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index be6d61a89edc..7105d5e794e4 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -300,7 +300,8 @@ struct init_cb_24xx {
         uint32_t prio_request_q_address[2];
 
         uint16_t msix;
-        uint8_t reserved_2[6];
+        uint16_t msix_atio;
+        uint8_t reserved_2[4];
 
         uint16_t atio_q_inpointer;
         uint16_t atio_q_length;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 81e8ccacf55b..a581c850ad74 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1964,7 +1964,7 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
                 WRT_REG_DWORD(&reg->isp24.rsp_q_in, 0);
                 WRT_REG_DWORD(&reg->isp24.rsp_q_out, 0);
         }
-        qlt_24xx_config_rings(vha, reg);
+        qlt_24xx_config_rings(vha);
 
         /* PCI posting */
         RD_REG_DWORD(&ioreg->hccr);
@@ -5579,6 +5579,8 @@ qla81xx_nvram_config(scsi_qla_host_t *vha)
         if (IS_T10_PI_CAPABLE(ha))
                 nv->frame_payload_size &= ~7;
 
+        qlt_81xx_config_nvram_stage1(vha, nv);
+
         /* Reset Initialization control block */
         memset(icb, 0, ha->init_cb_size);
 
@@ -5619,6 +5621,8 @@ qla81xx_nvram_config(scsi_qla_host_t *vha)
         qla2x00_set_model_info(vha, nv->model_name, sizeof(nv->model_name),
             "QLE8XXX");
 
+        qlt_81xx_config_nvram_stage2(vha, icb);
+
         /* Use alternate WWN? */
         if (nv->host_p & __constant_cpu_to_le32(BIT_15)) {
                 memcpy(icb->node_name, nv->alternate_node_name, WWN_SIZE);
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 1b192c8bb133..26a3086a7e3a 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -13,6 +13,8 @@
 #include <scsi/scsi_bsg_fc.h>
 #include <scsi/scsi_eh.h>
 
+#include "qla_target.h"
+
 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
 static void qla2x00_process_completed_request(struct scsi_qla_host *,
         struct req_que *, uint32_t);
@@ -2751,6 +2753,12 @@ static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
 };
 
+static struct qla_init_msix_entry qla83xx_msix_entries[3] = {
+        { "qla2xxx (default)", qla24xx_msix_default },
+        { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
+        { "qla2xxx (atio_q)", qla83xx_msix_atio_q },
+};
+
 static void
 qla24xx_disable_msix(struct qla_hw_data *ha)
 {
@@ -2831,9 +2839,13 @@ msix_failed:
         }
 
         /* Enable MSI-X vectors for the base queue */
-        for (i = 0; i < 2; i++) {
+        for (i = 0; i < ha->msix_count; i++) {
                 qentry = &ha->msix_entries[i];
-                if (IS_QLA82XX(ha)) {
+                if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
+                        ret = request_irq(qentry->vector,
+                                qla83xx_msix_entries[i].handler,
+                                0, qla83xx_msix_entries[i].name, rsp);
+                } else if (IS_QLA82XX(ha)) {
                         ret = request_irq(qentry->vector,
                                 qla82xx_msix_entries[i].handler,
                                 0, qla82xx_msix_entries[i].name, rsp);
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index da86d3828c1d..e93408f8e7e1 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1812,6 +1812,9 @@ qla83xx_iospace_config(struct qla_hw_data *ha)
 
 mqiobase_exit:
         ha->msix_count = ha->max_rsp_queues + 1;
+
+        qlt_83xx_iospace_config(ha);
+
         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x011f,
             "MSIX Count:%d.\n", ha->msix_count);
         return 0;
@@ -2390,6 +2393,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
                 req_length = REQUEST_ENTRY_CNT_24XX;
                 rsp_length = RESPONSE_ENTRY_CNT_2300;
+                ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
                 ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                 ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
                 ha->gid_list_info_size = 8;
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index aa2e86917a0a..cb8ea4463886 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -52,7 +52,7 @@ MODULE_PARM_DESC(qlini_mode,
         "\"disabled\" - initiator mode will never be enabled; "
         "\"enabled\" (default) - initiator mode will always stay enabled.");
 
-static int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
+int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
 
 /*
  * From scsi/fc/fc_fcp.h
@@ -1119,6 +1119,7 @@ static void qlt_send_notify_ack(struct scsi_qla_host *vha,
         nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
         nack->u.isp24.status = ntfy->u.isp24.status;
         nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
+        nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
         nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
         nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
         nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
@@ -4666,7 +4667,6 @@ void
 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
 {
         struct qla_hw_data *ha = vha->hw;
-        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
         struct atio_from_isp *pkt;
         int cnt, i;
 
@@ -4694,26 +4694,28 @@ qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
         }
 
         /* Adjust ring index */
-        WRT_REG_DWORD(&reg->atio_q_out, ha->tgt.atio_ring_index);
+        WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
 }
 
 void
-qlt_24xx_config_rings(struct scsi_qla_host *vha, device_reg_t __iomem *reg)
+qlt_24xx_config_rings(struct scsi_qla_host *vha)
 {
         struct qla_hw_data *ha = vha->hw;
+        if (!QLA_TGT_MODE_ENABLED())
+                return;
 
-/* FIXME: atio_q in/out for ha->mqenable=1..? */
-        if (ha->mqenable) {
-#if 0
-                WRT_REG_DWORD(&reg->isp25mq.atio_q_in, 0);
-                WRT_REG_DWORD(&reg->isp25mq.atio_q_out, 0);
-                RD_REG_DWORD(&reg->isp25mq.atio_q_out);
-#endif
-        } else {
-                /* Setup APTIO registers for target mode */
-                WRT_REG_DWORD(&reg->isp24.atio_q_in, 0);
-                WRT_REG_DWORD(&reg->isp24.atio_q_out, 0);
-                RD_REG_DWORD(&reg->isp24.atio_q_out);
+        WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
+        WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
+        RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
+
+        if (IS_ATIO_MSIX_CAPABLE(ha)) {
+                struct qla_msix_entry *msix = &ha->msix_entries[2];
+                struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
+
+                icb->msix_atio = cpu_to_le16(msix->entry);
+                ql_dbg(ql_dbg_init, vha, 0xf072,
+                    "Registering ICB vector 0x%x for atio que.\n",
+                    msix->entry);
         }
 }
 
@@ -4796,6 +4798,101 @@ qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
         }
 }
 
+void
+qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
+{
+        struct qla_hw_data *ha = vha->hw;
+
+        if (!QLA_TGT_MODE_ENABLED())
+                return;
+
+        if (qla_tgt_mode_enabled(vha)) {
+                if (!ha->tgt.saved_set) {
+                        /* We save only once */
+                        ha->tgt.saved_exchange_count = nv->exchange_count;
+                        ha->tgt.saved_firmware_options_1 =
+                            nv->firmware_options_1;
+                        ha->tgt.saved_firmware_options_2 =
+                            nv->firmware_options_2;
+                        ha->tgt.saved_firmware_options_3 =
+                            nv->firmware_options_3;
+                        ha->tgt.saved_set = 1;
+                }
+
+                nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
+
+                /* Enable target mode */
+                nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
+
+                /* Disable ini mode, if requested */
+                if (!qla_ini_mode_enabled(vha))
+                        nv->firmware_options_1 |=
+                            __constant_cpu_to_le32(BIT_5);
+
+                /* Disable Full Login after LIP */
+                nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
+                /* Enable initial LIP */
+                nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
+                /* Enable FC tapes support */
+                nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
+                /* Disable Full Login after LIP */
+                nv->host_p &= __constant_cpu_to_le32(~BIT_10);
+                /* Enable target PRLI control */
+                nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
+        } else {
+                if (ha->tgt.saved_set) {
+                        nv->exchange_count = ha->tgt.saved_exchange_count;
+                        nv->firmware_options_1 =
+                            ha->tgt.saved_firmware_options_1;
+                        nv->firmware_options_2 =
+                            ha->tgt.saved_firmware_options_2;
+                        nv->firmware_options_3 =
+                            ha->tgt.saved_firmware_options_3;
+                }
+                return;
+        }
+
+        /* out-of-order frames reassembly */
+        nv->firmware_options_3 |= BIT_6|BIT_9;
+
+        if (ha->tgt.enable_class_2) {
+                if (vha->flags.init_done)
+                        fc_host_supported_classes(vha->host) =
+                                FC_COS_CLASS2 | FC_COS_CLASS3;
+
+                nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
+        } else {
+                if (vha->flags.init_done)
+                        fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
+
+                nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
+        }
+}
+
+void
+qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
+        struct init_cb_81xx *icb)
+{
+        struct qla_hw_data *ha = vha->hw;
+
+        if (!QLA_TGT_MODE_ENABLED())
+                return;
+
+        if (ha->tgt.node_name_set) {
+                memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
+                icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
+        }
+}
+
+void
+qlt_83xx_iospace_config(struct qla_hw_data *ha)
+{
+        if (!QLA_TGT_MODE_ENABLED())
+                return;
+
+        ha->msix_count += 1; /* For ATIO Q */
+}
+
 int
 qlt_24xx_process_response_error(struct scsi_qla_host *vha,
         struct sts_entry_24xx *pkt)
@@ -4828,11 +4925,41 @@ qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
         if (!QLA_TGT_MODE_ENABLED())
                 return;
 
+        if  (ha->mqenable || IS_QLA83XX(ha)) {
+                ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
+                ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
+        } else {
+                ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
+                ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
+        }
+
         mutex_init(&ha->tgt.tgt_mutex);
         mutex_init(&ha->tgt.tgt_host_action_mutex);
         qlt_clear_mode(base_vha);
 }
 
+irqreturn_t
+qla83xx_msix_atio_q(int irq, void *dev_id)
+{
+        struct rsp_que *rsp;
+        scsi_qla_host_t *vha;
+        struct qla_hw_data *ha;
+        unsigned long flags;
+
+        rsp = (struct rsp_que *) dev_id;
+        ha = rsp->hw;
+        vha = pci_get_drvdata(ha->pdev);
+
+        spin_lock_irqsave(&ha->hardware_lock, flags);
+
+        qlt_24xx_process_atio_queue(vha);
+        qla24xx_process_response_queue(vha, rsp);
+
+        spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+        return IRQ_HANDLED;
+}
+
 int
 qlt_mem_alloc(struct qla_hw_data *ha)
 {
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index fc61d6ab925e..ff9ccb9fd036 100644
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -162,7 +162,7 @@ struct imm_ntfy_from_isp {
                         uint16_t srr_rx_id;
                         uint16_t status;
                         uint8_t  status_subcode;
-                        uint8_t  reserved_3;
+                        uint8_t  fw_handle;
                         uint32_t exchange_address;
                         uint32_t srr_rel_offs;
                         uint16_t srr_ui;
@@ -218,7 +218,7 @@ struct nack_to_isp {
                         uint16_t srr_rx_id;
                         uint16_t status;
                         uint8_t  status_subcode;
-                        uint8_t  reserved_3;
+                        uint8_t  fw_handle;
                         uint32_t exchange_address;
                         uint32_t srr_rel_offs;
                         uint16_t srr_ui;
@@ -949,6 +949,7 @@ extern void qlt_update_vp_map(struct scsi_qla_host *, int);
  * is not set. Right now, ha value is ignored.
  */
 #define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
+extern int ql2x_ini_mode;
 
 static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
 {
@@ -986,12 +987,15 @@ extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *);
 extern void qlt_rff_id(struct scsi_qla_host *, struct ct_sns_req *);
 extern void qlt_init_atio_q_entries(struct scsi_qla_host *);
 extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *);
-extern void qlt_24xx_config_rings(struct scsi_qla_host *,
-        device_reg_t __iomem *);
+extern void qlt_24xx_config_rings(struct scsi_qla_host *);
 extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *,
         struct nvram_24xx *);
 extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *,
         struct init_cb_24xx *);
+extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *,
+        struct init_cb_81xx *);
+extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *,
+        struct nvram_81xx *);
 extern int qlt_24xx_process_response_error(struct scsi_qla_host *,
         struct sts_entry_24xx *);
 extern void qlt_modify_vp_config(struct scsi_qla_host *,
@@ -1001,5 +1005,7 @@ extern int qlt_mem_alloc(struct qla_hw_data *);
 extern void qlt_mem_free(struct qla_hw_data *);
 extern void qlt_stop_phase1(struct qla_tgt *);
 extern void qlt_stop_phase2(struct qla_tgt *);
+extern irqreturn_t qla83xx_msix_atio_q(int, void *);
+extern void qlt_83xx_iospace_config(struct qla_hw_data *);
 
 #endif /* __QLA_TARGET_H */