On 11/08/2016 07:57 AM, Manish Rangankar wrote:
The QLogic FastLinQ Driver for iSCSI (qedi) is the iSCSI specific module
for 41000 Series Converged Network Adapters by QLogic.
This patch consists of following changes:
- MAINTAINERS Makefile and Kconfig changes for qedi,
- PCI driver registration,
- iSCSI host level initialization,
- Debugfs and log level infrastructure.
Signed-off-by: Nilesh Javali <nilesh.javali@xxxxxxxxxx>
Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@xxxxxxxxxx>
Signed-off-by: Chad Dupuis <chad.dupuis@xxxxxxxxxx>
Signed-off-by: Saurav Kashyap <saurav.kashyap@xxxxxxxxxx>
Signed-off-by: Arun Easi <arun.easi@xxxxxxxxxx>
Signed-off-by: Manish Rangankar <manish.rangankar@xxxxxxxxxx>
---
MAINTAINERS | 6 +
drivers/net/ethernet/qlogic/Kconfig | 12 -
drivers/scsi/Kconfig | 1 +
drivers/scsi/Makefile | 1 +
drivers/scsi/qedi/Kconfig | 10 +
drivers/scsi/qedi/Makefile | 5 +
drivers/scsi/qedi/qedi.h | 291 +++++++
drivers/scsi/qedi/qedi_dbg.c | 143 ++++
drivers/scsi/qedi/qedi_dbg.h | 144 ++++
drivers/scsi/qedi/qedi_debugfs.c | 244 ++++++
drivers/scsi/qedi/qedi_hsi.h | 52 ++
drivers/scsi/qedi/qedi_main.c | 1616 +++++++++++++++++++++++++++++++++++
drivers/scsi/qedi/qedi_sysfs.c | 52 ++
drivers/scsi/qedi/qedi_version.h | 14 +
14 files changed, 2579 insertions(+), 12 deletions(-)
create mode 100644 drivers/scsi/qedi/Kconfig
create mode 100644 drivers/scsi/qedi/Makefile
create mode 100644 drivers/scsi/qedi/qedi.h
create mode 100644 drivers/scsi/qedi/qedi_dbg.c
create mode 100644 drivers/scsi/qedi/qedi_dbg.h
create mode 100644 drivers/scsi/qedi/qedi_debugfs.c
create mode 100644 drivers/scsi/qedi/qedi_hsi.h
create mode 100644 drivers/scsi/qedi/qedi_main.c
create mode 100644 drivers/scsi/qedi/qedi_sysfs.c
create mode 100644 drivers/scsi/qedi/qedi_version.h
diff --git a/MAINTAINERS b/MAINTAINERS
index e5c17a9..04eec14 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9934,6 +9934,12 @@ F: drivers/net/ethernet/qlogic/qed/
F: include/linux/qed/
F: drivers/net/ethernet/qlogic/qede/
+QLOGIC QL41xxx ISCSI DRIVER
+M: QLogic-Storage-Upstream@xxxxxxxxxx
+L: linux-scsi@xxxxxxxxxxxxxxx
+S: Supported
+F: drivers/scsi/qedi/
+
QNX4 FILESYSTEM
M: Anders Larsen <al@xxxxxxxxxxx>
W: http://www.alarsen.net/linux/qnx4fs/
diff --git a/drivers/net/ethernet/qlogic/Kconfig b/drivers/net/ethernet/qlogic/Kconfig
index 2832570..3cfd105 100644
--- a/drivers/net/ethernet/qlogic/Kconfig
+++ b/drivers/net/ethernet/qlogic/Kconfig
@@ -113,16 +113,4 @@ config QED_RDMA
config QED_ISCSI
bool
-config QEDI
- tristate "QLogic QED 25/40/100Gb iSCSI driver"
- depends on QED
- select QED_LL2
- select QED_ISCSI
- default n
- ---help---
- This provides a temporary node that allows the compilation
- and logical testing of the hardware offload iSCSI support
- for QLogic QED. This would be replaced by the 'real' option
- once the QEDI driver is added [+relocated].
-
endif # NET_VENDOR_QLOGIC
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 3e2bdb9..5cf03db 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -1254,6 +1254,7 @@ config SCSI_QLOGICPTI
source "drivers/scsi/qla2xxx/Kconfig"
source "drivers/scsi/qla4xxx/Kconfig"
+source "drivers/scsi/qedi/Kconfig"
config SCSI_LPFC
tristate "Emulex LightPulse Fibre Channel Support"
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 38d938d..da9e312 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -132,6 +132,7 @@ obj-$(CONFIG_PS3_ROM) += ps3rom.o
obj-$(CONFIG_SCSI_CXGB3_ISCSI) += libiscsi.o libiscsi_tcp.o cxgbi/
obj-$(CONFIG_SCSI_CXGB4_ISCSI) += libiscsi.o libiscsi_tcp.o cxgbi/
obj-$(CONFIG_SCSI_BNX2_ISCSI) += libiscsi.o bnx2i/
+obj-$(CONFIG_QEDI) += libiscsi.o qedi/
obj-$(CONFIG_BE2ISCSI) += libiscsi.o be2iscsi/
obj-$(CONFIG_SCSI_ESAS2R) += esas2r/
obj-$(CONFIG_SCSI_PMCRAID) += pmcraid.o
diff --git a/drivers/scsi/qedi/Kconfig b/drivers/scsi/qedi/Kconfig
new file mode 100644
index 0000000..23ca8a2
--- /dev/null
+++ b/drivers/scsi/qedi/Kconfig
@@ -0,0 +1,10 @@
+config QEDI
+ tristate "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver Support"
+ depends on PCI && SCSI
+ depends on QED
+ select SCSI_ISCSI_ATTRS
+ select QED_LL2
+ select QED_ISCSI
+ ---help---
+ This driver supports iSCSI offload for the QLogic FastLinQ
+ 41000 Series Converged Network Adapters.
diff --git a/drivers/scsi/qedi/Makefile b/drivers/scsi/qedi/Makefile
new file mode 100644
index 0000000..2b3e16b
--- /dev/null
+++ b/drivers/scsi/qedi/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_QEDI) := qedi.o
+qedi-y := qedi_main.o qedi_iscsi.o qedi_fw.o qedi_sysfs.o \
+ qedi_dbg.o
+
+qedi-$(CONFIG_DEBUG_FS) += qedi_debugfs.o
diff --git a/drivers/scsi/qedi/qedi.h b/drivers/scsi/qedi/qedi.h
new file mode 100644
index 0000000..92136a3
--- /dev/null
+++ b/drivers/scsi/qedi/qedi.h
@@ -0,0 +1,291 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef _QEDI_H_
+#define _QEDI_H_
+
+#define __PREVENT_QED_HSI__
+
+#include <scsi/scsi_transport_iscsi.h>
+#include <scsi/libiscsi.h>
+#include <scsi/scsi_host.h>
+#include <linux/uio_driver.h>
+
+#include "qedi_hsi.h"
+#include <linux/qed/qed_if.h>
+#include "qedi_dbg.h"
+#include <linux/qed/qed_iscsi_if.h>
+#include "qedi_version.h"
+
+#define QEDI_MODULE_NAME "qedi"
+
+struct qedi_endpoint;
+
+/*
+ * PCI function probe defines
+ */
+#define QEDI_MODE_NORMAL 0
+#define QEDI_MODE_RECOVERY 1
+
+#define ISCSI_WQE_SET_PTU_INVALIDATE 1
+#define QEDI_MAX_ISCSI_TASK 4096
+#define QEDI_MAX_TASK_NUM 0x0FFF
+#define QEDI_MAX_ISCSI_CONNS_PER_HBA 1024
+#define QEDI_ISCSI_MAX_BDS_PER_CMD 256 /* Firmware max BDs is 256 */
+#define MAX_OUSTANDING_TASKS_PER_CON 1024
+
+#define QEDI_MAX_BD_LEN 0xffff
+#define QEDI_BD_SPLIT_SZ 0x1000
+#define QEDI_PAGE_SIZE 4096
+#define QEDI_FAST_SGE_COUNT 4
+/* MAX Length for cached SGL */
+#define MAX_SGLEN_FOR_CACHESGL ((1U << 16) - 1)
+
+#define MAX_NUM_MSIX_PF 8
+#define MIN_NUM_CPUS_MSIX(x) min(x->msix_count, num_online_cpus())
+
+#define QEDI_LOCAL_PORT_MIN 60000
+#define QEDI_LOCAL_PORT_MAX 61024
+#define QEDI_LOCAL_PORT_RANGE (QEDI_LOCAL_PORT_MAX - QEDI_LOCAL_PORT_MIN)
+#define QEDI_LOCAL_PORT_INVALID 0xffff
+
+/* Queue sizes in number of elements */
+#define QEDI_SQ_SIZE MAX_OUSTANDING_TASKS_PER_CON
+#define QEDI_CQ_SIZE 2048
+#define QEDI_CMDQ_SIZE QEDI_MAX_ISCSI_TASK
+#define QEDI_PROTO_CQ_PROD_IDX 0
+
+struct qedi_glbl_q_params {
+ u64 hw_p_cq; /* Completion queue PBL */
+ u64 hw_p_rq; /* Request queue PBL */
+ u64 hw_p_cmdq; /* Command queue PBL */
+};
+
+struct global_queue {
+ union iscsi_cqe *cq;
+ dma_addr_t cq_dma;
+ u32 cq_mem_size;
+ u32 cq_cons_idx; /* Completion queue consumer index */
+
+ void *cq_pbl;
+ dma_addr_t cq_pbl_dma;
+ u32 cq_pbl_size;
+
+};
+
+struct qedi_fastpath {
+ struct qed_sb_info *sb_info;
+ u16 sb_id;
+#define QEDI_NAME_SIZE 16
+ char name[QEDI_NAME_SIZE];
+ struct qedi_ctx *qedi;
+};
+
+/* Used to pass fastpath information needed to process CQEs */
+struct qedi_io_work {
+ struct list_head list;
+ struct iscsi_cqe_solicited cqe;
+ u16 que_idx;
+};
+
+/**
+ * struct iscsi_cid_queue - Per adapter iscsi cid queue
+ *
+ * @cid_que_base: queue base memory
+ * @cid_que: queue memory pointer
+ * @cid_q_prod_idx: produce index
+ * @cid_q_cons_idx: consumer index
+ * @cid_q_max_idx: max index. used to detect wrap around condition
+ * @cid_free_cnt: queue size
+ * @conn_cid_tbl: iscsi cid to conn structure mapping table
+ *
+ * Per adapter iSCSI CID Queue
+ */
+struct iscsi_cid_queue {
+ void *cid_que_base;
+ u32 *cid_que;
+ u32 cid_q_prod_idx;
+ u32 cid_q_cons_idx;
+ u32 cid_q_max_idx;
+ u32 cid_free_cnt;
+ struct qedi_conn **conn_cid_tbl;
+};
+
+struct qedi_portid_tbl {
+ spinlock_t lock; /* Port id lock */
+ u16 start;
+ u16 max;
+ u16 next;
+ unsigned long *table;
+};
+
+struct qedi_itt_map {
+ __le32 itt;
+ struct qedi_cmd *p_cmd;
+};
+
+/* I/O tracing entry */
+#define QEDI_IO_TRACE_SIZE 2048
+struct qedi_io_log {
+#define QEDI_IO_TRACE_REQ 0
+#define QEDI_IO_TRACE_RSP 1
+ u8 direction;
+ u16 task_id;
+ u32 cid;
+ u32 port_id; /* Remote port fabric ID */
+ int lun;
+ u8 op; /* SCSI CDB */
+ u8 lba[4];
+ unsigned int bufflen; /* SCSI buffer length */
+ unsigned int sg_count; /* Number of SG elements */
+ u8 fast_sgs; /* number of fast sgls */
+ u8 slow_sgs; /* number of slow sgls */
+ u8 cached_sgs; /* number of cached sgls */
+ int result; /* Result passed back to mid-layer */
+ unsigned long jiffies; /* Time stamp when I/O logged */
+ int refcount; /* Reference count for task id */
+ unsigned int blk_req_cpu; /* CPU that the task is queued on by
+ * blk layer
+ */
+ unsigned int req_cpu; /* CPU that the task is queued on */
+ unsigned int intr_cpu; /* Interrupt CPU that the task is received on */
+ unsigned int blk_rsp_cpu;/* CPU that task is actually processed and
+ * returned to blk layer
+ */
+ bool cached_sge;
+ bool slow_sge;
+ bool fast_sge;
+};
+
+/* Number of entries in BDQ */
+#define QEDI_BDQ_NUM 256
+#define QEDI_BDQ_BUF_SIZE 256
+
+/* DMA coherent buffers for BDQ */
+struct qedi_bdq_buf {
+ void *buf_addr;
+ dma_addr_t buf_dma;
+};
+
+/* Main port level struct */
+struct qedi_ctx {
+ struct qedi_dbg_ctx dbg_ctx;
+ struct Scsi_Host *shost;
+ struct pci_dev *pdev;
+ struct qed_dev *cdev;
+ struct qed_dev_iscsi_info dev_info;
+ struct qed_int_info int_info;
+ struct qedi_glbl_q_params *p_cpuq;
+ struct global_queue **global_queues;
+ /* uio declaration */
+ struct qedi_uio_dev *udev;
+ struct list_head ll2_skb_list;
+ spinlock_t ll2_lock; /* Light L2 lock */
+ spinlock_t hba_lock; /* per port lock */
+ struct task_struct *ll2_recv_thread;
+ unsigned long flags;
+#define UIO_DEV_OPENED 1
+#define QEDI_IOTHREAD_WAKE 2
+#define QEDI_IN_RECOVERY 5
+#define QEDI_IN_OFFLINE 6
+
+ u8 mac[ETH_ALEN];
+ u32 src_ip[4];
+ u8 ip_type;
+
+ /* Physical address of above array */
+ u64 hw_p_cpuq;
+
+ struct qedi_bdq_buf bdq[QEDI_BDQ_NUM];
+ void *bdq_pbl;
+ dma_addr_t bdq_pbl_dma;
+ size_t bdq_pbl_mem_size;
+ void *bdq_pbl_list;
+ dma_addr_t bdq_pbl_list_dma;
+ u8 bdq_pbl_list_num_entries;
+ void __iomem *bdq_primary_prod;
+ void __iomem *bdq_secondary_prod;
+ u16 bdq_prod_idx;
+ u16 rq_num_entries;
+
+ u32 msix_count;
+ u32 max_sqes;
+ u8 num_queues;
+ u32 max_active_conns;
+
+ struct iscsi_cid_queue cid_que;
+ struct qedi_endpoint **ep_tbl;
+ struct qedi_portid_tbl lcl_port_tbl;
+
+ /* Rx fast path intr context */
+ struct qed_sb_info *sb_array;
+ struct qedi_fastpath *fp_array;
+ struct qed_iscsi_tid tasks;
+
+#define QEDI_LINK_DOWN 0
+#define QEDI_LINK_UP 1
+ atomic_t link_state;
+
+#define QEDI_RESERVE_TASK_ID 0
+#define MAX_ISCSI_TASK_ENTRIES 4096
+#define QEDI_INVALID_TASK_ID (MAX_ISCSI_TASK_ENTRIES + 1)
+ unsigned long task_idx_map[MAX_ISCSI_TASK_ENTRIES / BITS_PER_LONG];
+ struct qedi_itt_map *itt_map;
+ u16 tid_reuse_count[QEDI_MAX_ISCSI_TASK];
+ struct qed_pf_params pf_params;
+
+ struct workqueue_struct *tmf_thread;
+ struct workqueue_struct *offload_thread;
+
+ u16 ll2_mtu;
+
+ struct workqueue_struct *dpc_wq;
+
+ spinlock_t task_idx_lock; /* To protect gbl context */
+ s32 last_tidx_alloc;
+ s32 last_tidx_clear;
+
+ struct qedi_io_log io_trace_buf[QEDI_IO_TRACE_SIZE];
+ spinlock_t io_trace_lock; /* prtect trace Log buf */
+ u16 io_trace_idx;
+ unsigned int intr_cpu;
+ u32 cached_sgls;
+ bool use_cached_sge;
+ u32 slow_sgls;
+ bool use_slow_sge;
+ u32 fast_sgls;
+ bool use_fast_sge;
+
+ atomic_t num_offloads;
+};
+
+struct qedi_work {
+ struct list_head list;
+ struct qedi_ctx *qedi;
+ union iscsi_cqe cqe;
+ u16 que_idx;
+ bool is_solicited;
+};
+
+struct qedi_percpu_s {
+ struct task_struct *iothread;
+ struct list_head work_list;
+ spinlock_t p_work_lock; /* Per cpu worker lock */
+};
+
+static inline void *qedi_get_task_mem(struct qed_iscsi_tid *info, u32 tid)
+{
+ return (info->blocks[tid / info->num_tids_per_block] +
+ (tid % info->num_tids_per_block) * info->size);
+}
+
+#define QEDI_U64_HI(val) ((u32)(((u64)(val)) >> 32))
+#define QEDI_U64_LO(val) ((u32)(((u64)(val)) & 0xffffffff))
+
+#endif /* _QEDI_H_ */
diff --git a/drivers/scsi/qedi/qedi_dbg.c b/drivers/scsi/qedi/qedi_dbg.c
new file mode 100644
index 0000000..b03d9af
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_dbg.c
@@ -0,0 +1,143 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#include "qedi_dbg.h"
+#include <linux/vmalloc.h>
+
+void
+qedi_dbg_err(struct qedi_dbg_ctx *qedi, const char *func, u32 line,
+ const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+ char nfunc[32];
+
+ memset(nfunc, 0, sizeof(nfunc));
+ memcpy(nfunc, func, sizeof(nfunc) - 1);
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (likely(qedi) && likely(qedi->pdev))
+ pr_err("[%s]:[%s:%d]:%d: %pV", dev_name(&qedi->pdev->dev),
+ nfunc, line, qedi->host_no, &vaf);
+ else
+ pr_err("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf);
+
+ va_end(va);
+}
+
+void
+qedi_dbg_warn(struct qedi_dbg_ctx *qedi, const char *func, u32 line,
+ const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+ char nfunc[32];
+
+ memset(nfunc, 0, sizeof(nfunc));
+ memcpy(nfunc, func, sizeof(nfunc) - 1);
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (!(debug & QEDI_LOG_WARN))
+ return;
+
+ if (likely(qedi) && likely(qedi->pdev))
+ pr_warn("[%s]:[%s:%d]:%d: %pV", dev_name(&qedi->pdev->dev),
+ nfunc, line, qedi->host_no, &vaf);
+ else
+ pr_warn("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf);
+
+ va_end(va);
+}
+
+void
+qedi_dbg_notice(struct qedi_dbg_ctx *qedi, const char *func, u32 line,
+ const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+ char nfunc[32];
+
+ memset(nfunc, 0, sizeof(nfunc));
+ memcpy(nfunc, func, sizeof(nfunc) - 1);
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (!(debug & QEDI_LOG_NOTICE))
+ return;
+
+ if (likely(qedi) && likely(qedi->pdev))
+ pr_notice("[%s]:[%s:%d]:%d: %pV",
+ dev_name(&qedi->pdev->dev), nfunc, line,
+ qedi->host_no, &vaf);
+ else
+ pr_notice("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf);
+
+ va_end(va);
+}
+
+void
+qedi_dbg_info(struct qedi_dbg_ctx *qedi, const char *func, u32 line,
+ u32 level, const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+ char nfunc[32];
+
+ memset(nfunc, 0, sizeof(nfunc));
+ memcpy(nfunc, func, sizeof(nfunc) - 1);
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (!(debug & level))
+ return;
+
+ if (likely(qedi) && likely(qedi->pdev))
+ pr_info("[%s]:[%s:%d]:%d: %pV", dev_name(&qedi->pdev->dev),
+ nfunc, line, qedi->host_no, &vaf);
+ else
+ pr_info("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf);
+
+ va_end(va);
+}
+
+int
+qedi_create_sysfs_attr(struct Scsi_Host *shost, struct sysfs_bin_attrs *iter)
+{
+ int ret = 0;
+
+ for (; iter->name; iter++) {
+ ret = sysfs_create_bin_file(&shost->shost_gendev.kobj,
+ iter->attr);
+ if (ret)
+ pr_err("Unable to create sysfs %s attr, err(%d).\n",
+ iter->name, ret);
+ }
+ return ret;
+}
+
+void
+qedi_remove_sysfs_attr(struct Scsi_Host *shost, struct sysfs_bin_attrs *iter)
+{
+ for (; iter->name; iter++)
+ sysfs_remove_bin_file(&shost->shost_gendev.kobj, iter->attr);
+}
diff --git a/drivers/scsi/qedi/qedi_dbg.h b/drivers/scsi/qedi/qedi_dbg.h
new file mode 100644
index 0000000..5beb3ec
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_dbg.h
@@ -0,0 +1,144 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef _QEDI_DBG_H_
+#define _QEDI_DBG_H_
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <linux/string.h>
+#include <linux/version.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_iscsi.h>
+#include <linux/fs.h>
+
+#define __PREVENT_QED_HSI__
+#include <linux/qed/common_hsi.h>
+#include <linux/qed/qed_if.h>
+
+extern uint debug;
+
+/* Debug print level definitions */
+#define QEDI_LOG_DEFAULT 0x1 /* Set default logging mask */
+#define QEDI_LOG_INFO 0x2 /* Informational logs,
+ * MAC address, WWPN, WWNN
+ */
+#define QEDI_LOG_DISC 0x4 /* Init, discovery, rport */
+#define QEDI_LOG_LL2 0x8 /* LL2, VLAN logs */
+#define QEDI_LOG_CONN 0x10 /* Connection setup, cleanup */
+#define QEDI_LOG_EVT 0x20 /* Events, link, mtu */
+#define QEDI_LOG_TIMER 0x40 /* Timer events */
+#define QEDI_LOG_MP_REQ 0x80 /* Middle Path (MP) logs */
+#define QEDI_LOG_SCSI_TM 0x100 /* SCSI Aborts, Task Mgmt */
+#define QEDI_LOG_UNSOL 0x200 /* unsolicited event logs */
+#define QEDI_LOG_IO 0x400 /* scsi cmd, completion */
+#define QEDI_LOG_MQ 0x800 /* Multi Queue logs */
+#define QEDI_LOG_BSG 0x1000 /* BSG logs */
+#define QEDI_LOG_DEBUGFS 0x2000 /* debugFS logs */
+#define QEDI_LOG_LPORT 0x4000 /* lport logs */
+#define QEDI_LOG_ELS 0x8000 /* ELS logs */
+#define QEDI_LOG_NPIV 0x10000 /* NPIV logs */
+#define QEDI_LOG_SESS 0x20000 /* Conection setup, cleanup */
+#define QEDI_LOG_UIO 0x40000 /* iSCSI UIO logs */
+#define QEDI_LOG_TID 0x80000 /* FW TID context acquire,
+ * free
+ */
+#define QEDI_TRACK_TID 0x100000 /* Track TID state. To be
+ * enabled only at module load
+ * and not run-time.
+ */
+#define QEDI_TRACK_CMD_LIST 0x300000 /* Track active cmd list nodes,
+ * done with reference to TID,
+ * hence TRACK_TID also enabled.
+ */
+#define QEDI_LOG_NOTICE 0x40000000 /* Notice logs */
+#define QEDI_LOG_WARN 0x80000000 /* Warning logs */
+
+/* Debug context structure */
+struct qedi_dbg_ctx {
+ unsigned int host_no;
+ struct pci_dev *pdev;
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *bdf_dentry;
+#endif
+};
+
+#define QEDI_ERR(pdev, fmt, ...) \
+ qedi_dbg_err(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
+#define QEDI_WARN(pdev, fmt, ...) \
+ qedi_dbg_warn(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
+#define QEDI_NOTICE(pdev, fmt, ...) \
+ qedi_dbg_notice(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
+#define QEDI_INFO(pdev, level, fmt, ...) \
+ qedi_dbg_info(pdev, __func__, __LINE__, level, fmt, \
+ ## __VA_ARGS__)
+
+void qedi_dbg_err(struct qedi_dbg_ctx *, const char *, u32,
+ const char *, ...);
+void qedi_dbg_warn(struct qedi_dbg_ctx *, const char *, u32,
+ const char *, ...);
+void qedi_dbg_notice(struct qedi_dbg_ctx *, const char *, u32,
+ const char *, ...);
+void qedi_dbg_info(struct qedi_dbg_ctx *, const char *, u32, u32,
+ const char *, ...);
+
+struct Scsi_Host;
+
+struct sysfs_bin_attrs {
+ char *name;
+ struct bin_attribute *attr;
+};
+
+int qedi_create_sysfs_attr(struct Scsi_Host *,
+ struct sysfs_bin_attrs *);
+void qedi_remove_sysfs_attr(struct Scsi_Host *,
+ struct sysfs_bin_attrs *);
+
+#ifdef CONFIG_DEBUG_FS
+/* DebugFS related code */
+struct qedi_list_of_funcs {
+ char *oper_str;
+ ssize_t (*oper_func)(struct qedi_dbg_ctx *qedi);
+};
+
+struct qedi_debugfs_ops {
+ char *name;
+ struct qedi_list_of_funcs *qedi_funcs;
+};
+
+#define qedi_dbg_fileops(drv, ops) \
+{ \
+ .owner = THIS_MODULE, \
+ .open = simple_open, \
+ .read = drv##_dbg_##ops##_cmd_read, \
+ .write = drv##_dbg_##ops##_cmd_write \
+}
+
+/* Used for debugfs sequential files */
+#define qedi_dbg_fileops_seq(drv, ops) \
+{ \
+ .owner = THIS_MODULE, \
+ .open = drv##_dbg_##ops##_open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+}
+
+void qedi_dbg_host_init(struct qedi_dbg_ctx *,
+ struct qedi_debugfs_ops *,
+ const struct file_operations *);
+void qedi_dbg_host_exit(struct qedi_dbg_ctx *);
+void qedi_dbg_init(char *);
+void qedi_dbg_exit(void);
+#endif /* CONFIG_DEBUG_FS */
+
+#endif /* _QEDI_DBG_H_ */
diff --git a/drivers/scsi/qedi/qedi_debugfs.c b/drivers/scsi/qedi/qedi_debugfs.c
new file mode 100644
index 0000000..9559362
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_debugfs.c
@@ -0,0 +1,244 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#include "qedi.h"
+#include "qedi_dbg.h"
+
+#include <linux/uaccess.h>
+#include <linux/debugfs.h>
+#include <linux/module.h>
+
+int do_not_recover;
+static struct dentry *qedi_dbg_root;
+
+void
+qedi_dbg_host_init(struct qedi_dbg_ctx *qedi,
+ struct qedi_debugfs_ops *dops,
+ const struct file_operations *fops)
+{
+ char host_dirname[32];
+ struct dentry *file_dentry = NULL;
+
+ sprintf(host_dirname, "host%u", qedi->host_no);
+ qedi->bdf_dentry = debugfs_create_dir(host_dirname, qedi_dbg_root);
+ if (!qedi->bdf_dentry)
+ return;
+
+ while (dops) {
+ if (!(dops->name))
+ break;
+
+ file_dentry = debugfs_create_file(dops->name, 0600,
+ qedi->bdf_dentry, qedi,
+ fops);
+ if (!file_dentry) {
+ QEDI_INFO(qedi, QEDI_LOG_DEBUGFS,
+ "Debugfs entry %s creation failed\n",
+ dops->name);
+ debugfs_remove_recursive(qedi->bdf_dentry);
+ return;
+ }
+ dops++;
+ fops++;
+ }
+}
+
+void
+qedi_dbg_host_exit(struct qedi_dbg_ctx *qedi)
+{
+ debugfs_remove_recursive(qedi->bdf_dentry);
+ qedi->bdf_dentry = NULL;
+}
+
+void
+qedi_dbg_init(char *drv_name)
+{
+ qedi_dbg_root = debugfs_create_dir(drv_name, NULL);
+ if (!qedi_dbg_root)
+ QEDI_INFO(NULL, QEDI_LOG_DEBUGFS, "Init of debugfs failed\n");
+}
+
+void
+qedi_dbg_exit(void)
+{
+ debugfs_remove_recursive(qedi_dbg_root);
+ qedi_dbg_root = NULL;
+}
+
+static ssize_t
+qedi_dbg_do_not_recover_enable(struct qedi_dbg_ctx *qedi_dbg)
+{
+ if (!do_not_recover)
+ do_not_recover = 1;
+
+ QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
+ do_not_recover);
+ return 0;
+}
+
+static ssize_t
+qedi_dbg_do_not_recover_disable(struct qedi_dbg_ctx *qedi_dbg)
+{
+ if (do_not_recover)
+ do_not_recover = 0;
+
+ QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
+ do_not_recover);
+ return 0;
+}
+
+static struct qedi_list_of_funcs qedi_dbg_do_not_recover_ops[] = {
+ { "enable", qedi_dbg_do_not_recover_enable },
+ { "disable", qedi_dbg_do_not_recover_disable },
+ { NULL, NULL }
+};
+
+struct qedi_debugfs_ops qedi_debugfs_ops[] = {
+ { "gbl_ctx", NULL },
+ { "do_not_recover", qedi_dbg_do_not_recover_ops},
+ { "io_trace", NULL },
+ { NULL, NULL }
+};
+
+static ssize_t
+qedi_dbg_do_not_recover_cmd_write(struct file *filp, const char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ size_t cnt = 0;
+ struct qedi_dbg_ctx *qedi_dbg =
+ (struct qedi_dbg_ctx *)filp->private_data;
+ struct qedi_list_of_funcs *lof = qedi_dbg_do_not_recover_ops;
+
+ if (*ppos)
+ return 0;
+
+ while (lof) {
+ if (!(lof->oper_str))
+ break;
+
+ if (!strncmp(lof->oper_str, buffer, strlen(lof->oper_str))) {
+ cnt = lof->oper_func(qedi_dbg);
+ break;
+ }
+
+ lof++;
+ }
+ return (count - cnt);
+}
+
+static ssize_t
+qedi_dbg_do_not_recover_cmd_read(struct file *filp, char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ size_t cnt = 0;
+
+ if (*ppos)
+ return 0;
+
+ cnt = sprintf(buffer, "do_not_recover=%d\n", do_not_recover);
+ cnt = min_t(int, count, cnt - *ppos);
+ *ppos += cnt;
+ return cnt;
+}
+
+static int
+qedi_gbl_ctx_show(struct seq_file *s, void *unused)
+{
+ struct qedi_fastpath *fp = NULL;
+ struct qed_sb_info *sb_info = NULL;
+ struct status_block *sb = NULL;
+ struct global_queue *que = NULL;
+ int id;
+ u16 prod_idx;
+ struct qedi_ctx *qedi = s->private;
+ unsigned long flags;
+
+ seq_puts(s, " DUMP CQ CONTEXT:\n");
+
+ for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
+ spin_lock_irqsave(&qedi->hba_lock, flags);
+ seq_printf(s, "=========FAST CQ PATH [%d] ==========\n", id);
+ fp = &qedi->fp_array[id];
+ sb_info = fp->sb_info;
+ sb = sb_info->sb_virt;
+ prod_idx = (sb->pi_array[QEDI_PROTO_CQ_PROD_IDX] &
+ STATUS_BLOCK_PROD_INDEX_MASK);
+ seq_printf(s, "SB PROD IDX: %d\n", prod_idx);
+ que = qedi->global_queues[fp->sb_id];
+ seq_printf(s, "DRV CONS IDX: %d\n", que->cq_cons_idx);
+ seq_printf(s, "CQ complete host memory: %d\n", fp->sb_id);
+ seq_puts(s, "=========== END ==================\n\n\n");
+ spin_unlock_irqrestore(&qedi->hba_lock, flags);
+ }
+ return 0;
+}
+
+static int
+qedi_dbg_gbl_ctx_open(struct inode *inode, struct file *file)
+{
+ struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
+ struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
+ dbg_ctx);
+
+ return single_open(file, qedi_gbl_ctx_show, qedi);
+}
+
+static int
+qedi_io_trace_show(struct seq_file *s, void *unused)
+{
+ int id, idx = 0;
+ struct qedi_ctx *qedi = s->private;
+ struct qedi_io_log *io_log;
+ unsigned long flags;
+
+ seq_puts(s, " DUMP IO LOGS:\n");
+ spin_lock_irqsave(&qedi->io_trace_lock, flags);
+ idx = qedi->io_trace_idx;
+ for (id = 0; id < QEDI_IO_TRACE_SIZE; id++) {
+ io_log = &qedi->io_trace_buf[idx];
+ seq_printf(s, "iodir-%d:", io_log->direction);
+ seq_printf(s, "tid-0x%x:", io_log->task_id);
+ seq_printf(s, "cid-0x%x:", io_log->cid);
+ seq_printf(s, "lun-%d:", io_log->lun);
+ seq_printf(s, "op-0x%02x:", io_log->op);
+ seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
+ io_log->lba[1], io_log->lba[2], io_log->lba[3]);
+ seq_printf(s, "buflen-%d:", io_log->bufflen);
+ seq_printf(s, "sgcnt-%d:", io_log->sg_count);
+ seq_printf(s, "res-0x%08x:", io_log->result);
+ seq_printf(s, "jif-%lu:", io_log->jiffies);
+ seq_printf(s, "blk_req_cpu-%d:", io_log->blk_req_cpu);
+ seq_printf(s, "req_cpu-%d:", io_log->req_cpu);
+ seq_printf(s, "intr_cpu-%d:", io_log->intr_cpu);
+ seq_printf(s, "blk_rsp_cpu-%d\n", io_log->blk_rsp_cpu);
+
+ idx++;
+ if (idx == QEDI_IO_TRACE_SIZE)
+ idx = 0;
+ }
+ spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
+ return 0;
+}
+
+static int
+qedi_dbg_io_trace_open(struct inode *inode, struct file *file)
+{
+ struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
+ struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
+ dbg_ctx);
+
+ return single_open(file, qedi_io_trace_show, qedi);
+}
+
+const struct file_operations qedi_dbg_fops[] = {
+ qedi_dbg_fileops_seq(qedi, gbl_ctx),
+ qedi_dbg_fileops(qedi, do_not_recover),
+ qedi_dbg_fileops_seq(qedi, io_trace),
+ { NULL, NULL },
+};
diff --git a/drivers/scsi/qedi/qedi_hsi.h b/drivers/scsi/qedi/qedi_hsi.h
new file mode 100644
index 0000000..8ca44c7
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_hsi.h
@@ -0,0 +1,52 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+#ifndef __QEDI_HSI__
+#define __QEDI_HSI__
+/*
+ * Add include to common target
+ */
+#include <linux/qed/common_hsi.h>
+
+/*
+ * Add include to common storage target
+ */
+#include <linux/qed/storage_common.h>
+
+/*
+ * Add include to common TCP target
+ */
+#include <linux/qed/tcp_common.h>
+
+/*
+ * Add include to common iSCSI target for both eCore and protocol driver
+ */
+#include <linux/qed/iscsi_common.h>
+
+/*
+ * iSCSI CMDQ element
+ */
+struct iscsi_cmdqe {
+ __le16 conn_id;
+ u8 invalid_command;
+ u8 cmd_hdr_type;
+ __le32 reserved1[2];
+ __le32 cmd_payload[13];
+};
+
+/*
+ * iSCSI CMD header type
+ */
+enum iscsi_cmd_hdr_type {
+ ISCSI_CMD_HDR_TYPE_BHS_ONLY /* iSCSI BHS with no expected AHS */,
+ ISCSI_CMD_HDR_TYPE_BHS_W_AHS /* iSCSI BHS with expected AHS */,
+ ISCSI_CMD_HDR_TYPE_AHS /* iSCSI AHS */,
+ MAX_ISCSI_CMD_HDR_TYPE
+};
+
+#endif /* __QEDI_HSI__ */
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
new file mode 100644
index 0000000..5845dc9
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -0,0 +1,1616 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/if_arp.h>
+#include <scsi/iscsi_if.h>
+#include <linux/inet.h>
+#include <net/arp.h>
+#include <linux/list.h>
+#include <linux/kthread.h>
+#include <linux/mm.h>
+#include <linux/if_vlan.h>
+#include <linux/cpu.h>
+
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi.h>
+
+#include "qedi.h"
+
+static uint fw_debug;
+module_param(fw_debug, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(fw_debug, " Firmware debug level 0(default) to 3");
+
+static uint int_mode;
+module_param(int_mode, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(int_mode,
+ " Force interrupt mode other than MSI-X: (1 INT#x; 2 MSI)");
+
+uint debug = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
+module_param(debug, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, " Default debug level");
+
+const struct qed_iscsi_ops *qedi_ops;
+static struct scsi_transport_template *qedi_scsi_transport;
+static struct pci_driver qedi_pci_driver;
+static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
+/* Static function declaration */
+static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
+static void qedi_free_global_queues(struct qedi_ctx *qedi);
+static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
+
+static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
+{
+ struct qedi_ctx *qedi;
+ struct qedi_endpoint *qedi_ep;
+ struct async_data *data;
+ int rval = 0;
+
+ if (!context || !fw_handle) {
+ QEDI_ERR(NULL, "Recv event with ctx NULL\n");
+ return -EINVAL;
+ }
+
+ qedi = (struct qedi_ctx *)context;
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
+
+ data = (struct async_data *)fw_handle;
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "cid=0x%x tid=0x%x err-code=0x%x fw-dbg-param=0x%x\n",
+ data->cid, data->itid, data->error_code,
+ data->fw_debug_param);
+
+ qedi_ep = qedi->ep_tbl[data->cid];
+
+ if (!qedi_ep) {
+ QEDI_WARN(&qedi->dbg_ctx,
+ "Cannot process event, ep already disconnected, cid=0x%x\n",
+ data->cid);
+ WARN_ON(1);
+ return -ENODEV;
+ }
+
+ switch (fw_event_code) {
+ case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
+ if (qedi_ep->state == EP_STATE_OFLDCONN_START)
+ qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
+
+ wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
+ break;
+ case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
+ qedi_ep->state = EP_STATE_DISCONN_COMPL;
+ wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
+ break;
+ case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
+ qedi_process_iscsi_error(qedi_ep, data);
+ break;
+ case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
+ case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
+ case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
+ case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
+ case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
+ case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
+ case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
+ qedi_process_tcp_error(qedi_ep, data);
+ break;
+ default:
+ QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
+ fw_event_code);
+ }
+
+ return rval;
+}
+
+static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
+ struct qed_sb_info *sb_info, u16 sb_id)
+{
+ struct status_block *sb_virt;
+ dma_addr_t sb_phys;
+ int ret;
+
+ sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
+ sizeof(struct status_block), &sb_phys,
+ GFP_KERNEL);
+ if (!sb_virt) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Status block allocation failed for id = %d.\n",
+ sb_id);
+ return -ENOMEM;
+ }
+
+ ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
+ sb_id, QED_SB_TYPE_STORAGE);
+ if (ret) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Status block initialization failed for id = %d.\n",
+ sb_id);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void qedi_free_sb(struct qedi_ctx *qedi)
+{
+ struct qed_sb_info *sb_info;
+ int id;
+
+ for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
+ sb_info = &qedi->sb_array[id];
+ if (sb_info->sb_virt)
+ dma_free_coherent(&qedi->pdev->dev,
+ sizeof(*sb_info->sb_virt),
+ (void *)sb_info->sb_virt,
+ sb_info->sb_phys);
+ }
+}
+
+static void qedi_free_fp(struct qedi_ctx *qedi)
+{
+ kfree(qedi->fp_array);
+ kfree(qedi->sb_array);
+}
+
+static void qedi_destroy_fp(struct qedi_ctx *qedi)
+{
+ qedi_free_sb(qedi);
+ qedi_free_fp(qedi);
+}
+
+static int qedi_alloc_fp(struct qedi_ctx *qedi)
+{
+ int ret = 0;
+
+ qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
+ sizeof(struct qedi_fastpath), GFP_KERNEL);
+ if (!qedi->fp_array) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "fastpath fp array allocation failed.\n");
+ return -ENOMEM;
+ }
+
+ qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
+ sizeof(struct qed_sb_info), GFP_KERNEL);
+ if (!qedi->sb_array) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "fastpath sb array allocation failed.\n");
+ ret = -ENOMEM;
+ goto free_fp;
+ }
+
+ return ret;
+
+free_fp:
+ qedi_free_fp(qedi);
+ return ret;
+}
+
+static void qedi_int_fp(struct qedi_ctx *qedi)
+{
+ struct qedi_fastpath *fp;
+ int id;
+
+ memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
+ sizeof(*qedi->fp_array));
+ memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
+ sizeof(*qedi->sb_array));
+
+ for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
+ fp = &qedi->fp_array[id];
+ fp->sb_info = &qedi->sb_array[id];
+ fp->sb_id = id;
+ fp->qedi = qedi;
+ snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
+ "qedi", id);
+
+ /* fp_array[i] ---- irq cookie
+ * So init data which is needed in int ctx
+ */
+ }
+}
+
+static int qedi_prepare_fp(struct qedi_ctx *qedi)
+{
+ struct qedi_fastpath *fp;
+ int id, ret = 0;
+
+ ret = qedi_alloc_fp(qedi);
+ if (ret)
+ goto err;
+
+ qedi_int_fp(qedi);
+
+ for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
+ fp = &qedi->fp_array[id];
+ ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
+ if (ret) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "SB allocation and initialization failed.\n");
+ ret = -EIO;
+ goto err_init;
+ }
+ }
+
+ return 0;
+
+err_init:
+ qedi_free_sb(qedi);
+ qedi_free_fp(qedi);
+err:
+ return ret;
+}
+
+static enum qed_int_mode qedi_int_mode_to_enum(void)
+{
+ switch (int_mode) {
+ case 0: return QED_INT_MODE_MSIX;
+ case 1: return QED_INT_MODE_INTA;
+ case 2: return QED_INT_MODE_MSI;
+ default:
+ QEDI_ERR(NULL, "Unknown qede_int_mode=%08x; "
+ "Defaulting to MSI-x\n", int_mode);
+ return QED_INT_MODE_MSIX;
+ }
+}
Errm. A per-driver interrupt mode?
How very curious.
You surely want to make that per-HBA, right?
+
+static int qedi_setup_cid_que(struct qedi_ctx *qedi)
+{
+ int i;
+
+ qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
+ sizeof(u32), GFP_KERNEL);
+ if (!qedi->cid_que.cid_que_base)
+ return -ENOMEM;
+
+ qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
+ sizeof(struct qedi_conn *),
+ GFP_KERNEL);
+ if (!qedi->cid_que.conn_cid_tbl) {
+ kfree(qedi->cid_que.cid_que_base);
+ qedi->cid_que.cid_que_base = NULL;
+ return -ENOMEM;
+ }
+
+ qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
+ qedi->cid_que.cid_q_prod_idx = 0;
+ qedi->cid_que.cid_q_cons_idx = 0;
+ qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
+ qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
+
+ for (i = 0; i < qedi->max_active_conns; i++) {
+ qedi->cid_que.cid_que[i] = i;
+ qedi->cid_que.conn_cid_tbl[i] = NULL;
+ }
+
+ return 0;
+}
+
+static void qedi_release_cid_que(struct qedi_ctx *qedi)
+{
+ kfree(qedi->cid_que.cid_que_base);
+ qedi->cid_que.cid_que_base = NULL;
+
+ kfree(qedi->cid_que.conn_cid_tbl);
+ qedi->cid_que.conn_cid_tbl = NULL;
+}
+
+static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
+ u16 start_id, u16 next)
+{
+ id_tbl->start = start_id;
+ id_tbl->max = size;
+ id_tbl->next = next;
+ spin_lock_init(&id_tbl->lock);
+ id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
+ if (!id_tbl->table)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
+{
+ kfree(id_tbl->table);
+ id_tbl->table = NULL;
+}
+
+int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
+{
+ int ret = -1;
+
+ id -= id_tbl->start;
+ if (id >= id_tbl->max)
+ return ret;
+
+ spin_lock(&id_tbl->lock);
+ if (!test_bit(id, id_tbl->table)) {
+ set_bit(id, id_tbl->table);
+ ret = 0;
+ }
+ spin_unlock(&id_tbl->lock);
+ return ret;
+}
+
+u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
+{
+ u16 id;
+
+ spin_lock(&id_tbl->lock);
+ id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
+ if (id >= id_tbl->max) {
+ id = QEDI_LOCAL_PORT_INVALID;
+ if (id_tbl->next != 0) {
+ id = find_first_zero_bit(id_tbl->table, id_tbl->next);
+ if (id >= id_tbl->next)
+ id = QEDI_LOCAL_PORT_INVALID;
+ }
+ }
+
+ if (id < id_tbl->max) {
+ set_bit(id, id_tbl->table);
+ id_tbl->next = (id + 1) & (id_tbl->max - 1);
+ id += id_tbl->start;
+ }
+
+ spin_unlock(&id_tbl->lock);
+
+ return id;
+}
+
+void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
+{
+ if (id == QEDI_LOCAL_PORT_INVALID)
+ return;
+
+ id -= id_tbl->start;
+ if (id >= id_tbl->max)
+ return;
+
+ clear_bit(id, id_tbl->table);
+}
+
+static void qedi_cm_free_mem(struct qedi_ctx *qedi)
+{
+ kfree(qedi->ep_tbl);
+ qedi->ep_tbl = NULL;
+ qedi_free_id_tbl(&qedi->lcl_port_tbl);
+}
+
+static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
+{
+ u16 port_id;
+
+ qedi->ep_tbl = kzalloc((qedi->max_active_conns *
+ sizeof(struct qedi_endpoint *)), GFP_KERNEL);
+ if (!qedi->ep_tbl)
+ return -ENOMEM;
+ port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
+ if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
+ QEDI_LOCAL_PORT_MIN, port_id)) {
+ qedi_cm_free_mem(qedi);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
+{
+ struct Scsi_Host *shost;
+ struct qedi_ctx *qedi = NULL;
+
+ shost = iscsi_host_alloc(&qedi_host_template,
+ sizeof(struct qedi_ctx), 0);
+ if (!shost) {
+ QEDI_ERR(NULL, "Could not allocate shost\n");
+ goto exit_setup_shost;
+ }
+
+ shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA;
+ shost->max_channel = 0;
+ shost->max_lun = ~0;
+ shost->max_cmd_len = 16;
+ shost->transportt = qedi_scsi_transport;
+
+ qedi = iscsi_host_priv(shost);
+ memset(qedi, 0, sizeof(*qedi));
+ qedi->shost = shost;
+ qedi->dbg_ctx.host_no = shost->host_no;
+ qedi->pdev = pdev;
+ qedi->dbg_ctx.pdev = pdev;
+ qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
+ qedi->max_sqes = QEDI_SQ_SIZE;
+
+ if (shost_use_blk_mq(shost))
+ shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
+
+ pci_set_drvdata(pdev, qedi);
+
+exit_setup_shost:
+ return qedi;
+}
+
A round of silent applause for implementing scsi-mq support ...
+static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
+{
+ u8 num_sq_pages;
+ u32 log_page_size;
+ int rval = 0;
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "Min number of MSIX %d\n",
+ MIN_NUM_CPUS_MSIX(qedi));
+
+ num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE;
+
+ qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
+
+ memset(&qedi->pf_params.iscsi_pf_params, 0,
+ sizeof(qedi->pf_params.iscsi_pf_params));
+
+ qedi->p_cpuq = pci_alloc_consistent(qedi->pdev,
+ qedi->num_queues * sizeof(struct qedi_glbl_q_params),
+ &qedi->hw_p_cpuq);
+ if (!qedi->p_cpuq) {
+ QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n");
+ rval = -1;
+ goto err_alloc_mem;
+ }
+
+ rval = qedi_alloc_global_queues(qedi);
+ if (rval) {
+ QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
+ rval = -1;
+ goto err_alloc_mem;
+ }
+
+ qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
+ qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
+ qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
+ qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
+ qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
+ qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
+ qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
+ qedi->pf_params.iscsi_pf_params.debug_mode = fw_debug;
+
+ for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
+ if ((1 << log_page_size) == PAGE_SIZE)
+ break;
+ }
+ qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
+
+ qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = qedi->hw_p_cpuq;
+
+ /* RQ BDQ initializations.
+ * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
+ * rqe_log_size: 8 for 256B RQE
+ */
+ qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
+ /* BDQ address and size */
+ qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
+ qedi->bdq_pbl_list_dma;
+ qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
+ qedi->bdq_pbl_list_num_entries;
+ qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
+
+ /* cq_num_entries: num_tasks + rq_num_entries */
+ qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
+
+ qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
+ qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
+ qedi->pf_params.iscsi_pf_params.ooo_enable = 1;
+
+err_alloc_mem:
+ return rval;
+}
+
+/* Free DMA coherent memory for array of queue pointers we pass to qed */
+static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
+{
+ size_t size = 0;
+
+ if (qedi->p_cpuq) {
+ size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
+ pci_free_consistent(qedi->pdev, size, qedi->p_cpuq,
+ qedi->hw_p_cpuq);
+ }
+
+ qedi_free_global_queues(qedi);
+
+ kfree(qedi->global_queues);
+}
+
+static void qedi_link_update(void *dev, struct qed_link_output *link)
+{
+ struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
+
+ if (link->link_up) {
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
+ atomic_set(&qedi->link_state, QEDI_LINK_UP);
+ } else {
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "Link Down event.\n");
+ atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
+ }
+}
+
+static struct qed_iscsi_cb_ops qedi_cb_ops = {
+ {
+ .link_update = qedi_link_update,
+ }
+};
+
+static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
+ u16 que_idx, struct qedi_percpu_s *p)
+{
+ struct qedi_work *qedi_work;
+ struct qedi_conn *q_conn;
+ struct iscsi_conn *conn;
+ struct qedi_cmd *qedi_cmd;
+ u32 iscsi_cid;
+ int rc = 0;
+
+ iscsi_cid = cqe->cqe_common.conn_id;
+ q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
+ if (!q_conn) {
+ QEDI_WARN(&qedi->dbg_ctx,
+ "Session no longer exists for cid=0x%x!!\n",
+ iscsi_cid);
+ return -1;
+ }
+ conn = q_conn->cls_conn->dd_data;
+
+ switch (cqe->cqe_common.cqe_type) {
+ case ISCSI_CQE_TYPE_SOLICITED:
+ case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
+ qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
+ if (!qedi_cmd) {
+ rc = -1;
+ break;
+ }
+ INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
+ qedi_cmd->cqe_work.qedi = qedi;
+ memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
+ qedi_cmd->cqe_work.que_idx = que_idx;
+ qedi_cmd->cqe_work.is_solicited = true;
+ list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
+ break;
+ case ISCSI_CQE_TYPE_UNSOLICITED:
+ case ISCSI_CQE_TYPE_DUMMY:
+ case ISCSI_CQE_TYPE_TASK_CLEANUP:
+ qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
+ if (!qedi_work) {
+ rc = -1;
+ break;
+ }
+ INIT_LIST_HEAD(&qedi_work->list);
+ qedi_work->qedi = qedi;
+ memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
+ qedi_work->que_idx = que_idx;
+ qedi_work->is_solicited = false;
+ list_add_tail(&qedi_work->list, &p->work_list);
+ break;
+ default:
+ rc = -1;
+ QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
+ }
+ return rc;
+}
+
+static bool qedi_process_completions(struct qedi_fastpath *fp)
+{
+ struct qedi_ctx *qedi = fp->qedi;
+ struct qed_sb_info *sb_info = fp->sb_info;
+ struct status_block *sb = sb_info->sb_virt;
+ struct qedi_percpu_s *p = NULL;
+ struct global_queue *que;
+ u16 prod_idx;
+ unsigned long flags;
+ union iscsi_cqe *cqe;
+ int cpu;
+ int ret;
+
+ /* Get the current firmware producer index */
+ prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
+
+ if (prod_idx >= QEDI_CQ_SIZE)
+ prod_idx = prod_idx % QEDI_CQ_SIZE;
+
+ que = qedi->global_queues[fp->sb_id];
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
+ "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
+ que, prod_idx, que->cq_cons_idx, fp->sb_id);
+
+ qedi->intr_cpu = fp->sb_id;
+ cpu = smp_processor_id();
+ p = &per_cpu(qedi_percpu, cpu);
+
+ if (unlikely(!p->iothread))
+ WARN_ON(1);
+
+ spin_lock_irqsave(&p->p_work_lock, flags);
+ while (que->cq_cons_idx != prod_idx) {
+ cqe = &que->cq[que->cq_cons_idx];
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
+ "cqe=%p prod_idx=%d cons_idx=%d.\n",
+ cqe, prod_idx, que->cq_cons_idx);
+
+ ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
+ if (ret)
+ continue;
+
+ que->cq_cons_idx++;
+ if (que->cq_cons_idx == QEDI_CQ_SIZE)
+ que->cq_cons_idx = 0;
+ }
+ wake_up_process(p->iothread);
+ spin_unlock_irqrestore(&p->p_work_lock, flags);
+
+ return true;
+}
+
+static bool qedi_fp_has_work(struct qedi_fastpath *fp)
+{
+ struct qedi_ctx *qedi = fp->qedi;
+ struct global_queue *que;
+ struct qed_sb_info *sb_info = fp->sb_info;
+ struct status_block *sb = sb_info->sb_virt;
+ u16 prod_idx;
+
+ barrier();
+
+ /* Get the current firmware producer index */
+ prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
+
+ /* Get the pointer to the global CQ this completion is on */
+ que = qedi->global_queues[fp->sb_id];
+
+ /* prod idx wrap around uint16 */
+ if (prod_idx >= QEDI_CQ_SIZE)
+ prod_idx = prod_idx % QEDI_CQ_SIZE;
+
+ return (que->cq_cons_idx != prod_idx);
+}
+
+/* MSI-X fastpath handler code */
+static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
+{
+ struct qedi_fastpath *fp = dev_id;
+ struct qedi_ctx *qedi = fp->qedi;
+ bool wake_io_thread = true;
+
+ qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
+
+process_again:
+ wake_io_thread = qedi_process_completions(fp);
+ if (wake_io_thread) {
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
+ "process already running\n");
+ }
+
+ if (qedi_fp_has_work(fp) == 0)
+ qed_sb_update_sb_idx(fp->sb_info);
+
+ /* Check for more work */
+ rmb();
+
+ if (qedi_fp_has_work(fp) == 0)
+ qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
+ else
+ goto process_again;
+
+ return IRQ_HANDLED;
+}
+
+/* simd handler for MSI/INTa */
+static void qedi_simd_int_handler(void *cookie)
+{
+ /* Cookie is qedi_ctx struct */
+ struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
+
+ QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
+}
+
+#define QEDI_SIMD_HANDLER_NUM 0
+static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
+{
+ int i;
+
+ if (qedi->int_info.msix_cnt) {
+ for (i = 0; i < qedi->int_info.used_cnt; i++) {
+ synchronize_irq(qedi->int_info.msix[i].vector);
+ irq_set_affinity_hint(qedi->int_info.msix[i].vector,
+ NULL);
+ free_irq(qedi->int_info.msix[i].vector,
+ &qedi->fp_array[i]);
+ }
+ } else {
+ qedi_ops->common->simd_handler_clean(qedi->cdev,
+ QEDI_SIMD_HANDLER_NUM);
+ }
+
+ qedi->int_info.used_cnt = 0;
+ qedi_ops->common->set_fp_int(qedi->cdev, 0);
+}
+
+static int qedi_request_msix_irq(struct qedi_ctx *qedi)
+{
+ int i, rc, cpu;
+
+ cpu = cpumask_first(cpu_online_mask);
+ for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) {
+ rc = request_irq(qedi->int_info.msix[i].vector,
+ qedi_msix_handler, 0, "qedi",
+ &qedi->fp_array[i]);
+
+ if (rc) {
+ QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
+ qedi_sync_free_irqs(qedi);
+ return rc;
+ }
+ qedi->int_info.used_cnt++;
+ rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector,
+ get_cpu_mask(cpu));
+ cpu = cpumask_next(cpu, cpu_online_mask);
+ }
+
+ return 0;
+}
Please use the irq-affinity rework from Christoph here; that'll save you
the additional msix vectors allocation.
+
+static int qedi_setup_int(struct qedi_ctx *qedi)
+{
+ int rc = 0;
+
+ rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
+ rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
+ if (rc)
+ goto exit_setup_int;
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
+ "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
+ qedi->int_info.msix_cnt, num_online_cpus());
+
+ if (qedi->int_info.msix_cnt) {
+ rc = qedi_request_msix_irq(qedi);
+ goto exit_setup_int;
+ } else {
+ qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
+ QEDI_SIMD_HANDLER_NUM,
+ qedi_simd_int_handler);
+ qedi->int_info.used_cnt = 1;
+ }
+
+exit_setup_int:
+ return rc;
+}
+
+static void qedi_free_bdq(struct qedi_ctx *qedi)
+{
+ int i;
+
+ if (qedi->bdq_pbl_list)
+ dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE,
+ qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
+
+ if (qedi->bdq_pbl)
+ dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
+ qedi->bdq_pbl, qedi->bdq_pbl_dma);
+
+ for (i = 0; i < QEDI_BDQ_NUM; i++) {
+ if (qedi->bdq[i].buf_addr) {
+ dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
+ qedi->bdq[i].buf_addr,
+ qedi->bdq[i].buf_dma);
+ }
+ }
+}
+
+static void qedi_free_global_queues(struct qedi_ctx *qedi)
+{
+ int i;
+ struct global_queue **gl = qedi->global_queues;
+
+ for (i = 0; i < qedi->num_queues; i++) {
+ if (!gl[i])
+ continue;
+
+ if (gl[i]->cq)
+ dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
+ gl[i]->cq, gl[i]->cq_dma);
+ if (gl[i]->cq_pbl)
+ dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
+ gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
+
+ kfree(gl[i]);
+ }
+ qedi_free_bdq(qedi);
+}
+
+static int qedi_alloc_bdq(struct qedi_ctx *qedi)
+{
+ int i;
+ struct scsi_bd *pbl;
+ u64 *list;
+ dma_addr_t page;
+
+ /* Alloc dma memory for BDQ buffers */
+ for (i = 0; i < QEDI_BDQ_NUM; i++) {
+ qedi->bdq[i].buf_addr =
+ dma_alloc_coherent(&qedi->pdev->dev,
+ QEDI_BDQ_BUF_SIZE,
+ &qedi->bdq[i].buf_dma,
+ GFP_KERNEL);
+ if (!qedi->bdq[i].buf_addr) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Could not allocate BDQ buffer %d.\n", i);
+ return -ENOMEM;
+ }
+ }
+
+ /* Alloc dma memory for BDQ page buffer list */
+ qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
+ qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE);
+ qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
+ qedi->rq_num_entries);
+
+ qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
+ qedi->bdq_pbl_mem_size,
+ &qedi->bdq_pbl_dma, GFP_KERNEL);
+ if (!qedi->bdq_pbl) {
+ QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Populate BDQ PBL with physical and virtual address of individual
+ * BDQ buffers
+ */
+ pbl = (struct scsi_bd *)qedi->bdq_pbl;
+ for (i = 0; i < QEDI_BDQ_NUM; i++) {
+ pbl->address.hi =
+ cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
+ pbl->address.lo =
+ cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
+ "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
+ pbl, pbl->address.hi, pbl->address.lo, i);
+ pbl->opaque.hi = 0;
+ pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(i));
+ pbl++;
+ }
+
+ /* Allocate list of PBL pages */
+ qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
+ PAGE_SIZE,
+ &qedi->bdq_pbl_list_dma,
+ GFP_KERNEL);
+ if (!qedi->bdq_pbl_list) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Could not allocate list of PBL pages.\n");
+ return -ENOMEM;
+ }
+ memset(qedi->bdq_pbl_list, 0, PAGE_SIZE);
+
+ /*
+ * Now populate PBL list with pages that contain pointers to the
+ * individual buffers.
+ */
+ qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE;
+ list = (u64 *)qedi->bdq_pbl_list;
+ page = qedi->bdq_pbl_list_dma;
+ for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
+ *list = qedi->bdq_pbl_dma;
+ list++;
+ page += PAGE_SIZE;
+ }
+
+ return 0;
+}
+
+static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
+{
+ u32 *list;
+ int i;
+ int status = 0, rc;
+ u32 *pbl;
+ dma_addr_t page;
+ int num_pages;
+
+ /*
+ * Number of global queues (CQ / RQ). This should
+ * be <= number of available MSIX vectors for the PF
+ */
+ if (!qedi->num_queues) {
+ QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
+ return 1;
+ }
+
+ /* Make sure we allocated the PBL that will contain the physical
+ * addresses of our queues
+ */
+ if (!qedi->p_cpuq) {
+ status = 1;
+ goto mem_alloc_failure;
+ }
+
+ qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
+ qedi->num_queues), GFP_KERNEL);
+ if (!qedi->global_queues) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Unable to allocate global queues array ptr memory\n");
+ return -ENOMEM;
+ }
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
+ "qedi->global_queues=%p.\n", qedi->global_queues);
+
+ /* Allocate DMA coherent buffers for BDQ */
+ rc = qedi_alloc_bdq(qedi);
+ if (rc)
+ goto mem_alloc_failure;
+
+ /* Allocate a CQ and an associated PBL for each MSI-X
+ * vector.
+ */
+ for (i = 0; i < qedi->num_queues; i++) {
+ qedi->global_queues[i] =
+ kzalloc(sizeof(*qedi->global_queues[0]),
+ GFP_KERNEL);
+ if (!qedi->global_queues[i]) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Unable to allocation global queue %d.\n", i);
+ goto mem_alloc_failure;
+ }
+
+ qedi->global_queues[i]->cq_mem_size =
+ (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
+ qedi->global_queues[i]->cq_mem_size =
+ (qedi->global_queues[i]->cq_mem_size +
+ (QEDI_PAGE_SIZE - 1));
+
+ qedi->global_queues[i]->cq_pbl_size =
+ (qedi->global_queues[i]->cq_mem_size /
+ QEDI_PAGE_SIZE) * sizeof(void *);
+ qedi->global_queues[i]->cq_pbl_size =
+ (qedi->global_queues[i]->cq_pbl_size +
+ (QEDI_PAGE_SIZE - 1));
+
+ qedi->global_queues[i]->cq =
+ dma_alloc_coherent(&qedi->pdev->dev,
+ qedi->global_queues[i]->cq_mem_size,
+ &qedi->global_queues[i]->cq_dma,
+ GFP_KERNEL);
+
+ if (!qedi->global_queues[i]->cq) {
+ QEDI_WARN(&qedi->dbg_ctx,
+ "Could not allocate cq.\n");
+ status = -ENOMEM;
+ goto mem_alloc_failure;
+ }
+ memset(qedi->global_queues[i]->cq, 0,
+ qedi->global_queues[i]->cq_mem_size);
+
+ qedi->global_queues[i]->cq_pbl =
+ dma_alloc_coherent(&qedi->pdev->dev,
+ qedi->global_queues[i]->cq_pbl_size,
+ &qedi->global_queues[i]->cq_pbl_dma,
+ GFP_KERNEL);
+
+ if (!qedi->global_queues[i]->cq_pbl) {
+ QEDI_WARN(&qedi->dbg_ctx,
+ "Could not allocate cq PBL.\n");
+ status = -ENOMEM;
+ goto mem_alloc_failure;
+ }
+ memset(qedi->global_queues[i]->cq_pbl, 0,
+ qedi->global_queues[i]->cq_pbl_size);
+
+ /* Create PBL */
+ num_pages = qedi->global_queues[i]->cq_mem_size /
+ QEDI_PAGE_SIZE;
+ page = qedi->global_queues[i]->cq_dma;
+ pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
+
+ while (num_pages--) {
+ *pbl = (u32)page;
+ pbl++;
+ *pbl = (u32)((u64)page >> 32);
+ pbl++;
+ page += QEDI_PAGE_SIZE;
+ }
+ }
+
+ list = (u32 *)qedi->p_cpuq;
+
+ /*
+ * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
+ * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
+ * to the physical address which contains an array of pointers to the
+ * physical addresses of the specific queue pages.
+ */
+ for (i = 0; i < qedi->num_queues; i++) {
+ *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
+ list++;
+ *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
+ list++;
+
+ *list = (u32)0;
+ list++;
+ *list = (u32)((u64)0 >> 32);
+ list++;
+ }
+
+ return 0;
+
+mem_alloc_failure:
+ qedi_free_global_queues(qedi);
+ return status;
+}
+
+struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
+{
+ struct qedi_cmd *cmd = NULL;
+
+ if (tid > MAX_ISCSI_TASK_ENTRIES)
+ return NULL;
+
+ cmd = qedi->itt_map[tid].p_cmd;
+ if (cmd->task_id != tid)
+ return NULL;
+
+ qedi->itt_map[tid].p_cmd = NULL;
+
+ return cmd;
+}
+
+static int qedi_alloc_itt(struct qedi_ctx *qedi)
+{
+ qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
+ sizeof(struct qedi_itt_map), GFP_KERNEL);
+ if (!qedi->itt_map) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Unable to allocate itt map array memory\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static void qedi_free_itt(struct qedi_ctx *qedi)
+{
+ kfree(qedi->itt_map);
+}
+
+static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
+ .rx_cb = qedi_ll2_rx,
+ .tx_cb = NULL,
+};
+
+static int qedi_percpu_io_thread(void *arg)
+{
+ struct qedi_percpu_s *p = arg;
+ struct qedi_work *work, *tmp;
+ unsigned long flags;
+ LIST_HEAD(work_list);
+
+ set_user_nice(current, -20);
+
+ while (!kthread_should_stop()) {
+ spin_lock_irqsave(&p->p_work_lock, flags);
+ while (!list_empty(&p->work_list)) {
+ list_splice_init(&p->work_list, &work_list);
+ spin_unlock_irqrestore(&p->p_work_lock, flags);
+
+ list_for_each_entry_safe(work, tmp, &work_list, list) {
+ list_del_init(&work->list);
+ qedi_fp_process_cqes(work);
+ if (!work->is_solicited)
+ kfree(work);
+ }
+ cond_resched();
+ spin_lock_irqsave(&p->p_work_lock, flags);
+ }
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irqrestore(&p->p_work_lock, flags);
+ schedule();
+ }
+ __set_current_state(TASK_RUNNING);
+
+ return 0;
+}
+
+static void qedi_percpu_thread_create(unsigned int cpu)
+{
+ struct qedi_percpu_s *p;
+ struct task_struct *thread;
+
+ p = &per_cpu(qedi_percpu, cpu);
+
+ thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
+ cpu_to_node(cpu),
+ "qedi_thread/%d", cpu);
+ if (likely(!IS_ERR(thread))) {
+ kthread_bind(thread, cpu);
+ p->iothread = thread;
+ wake_up_process(thread);
+ }
+}
+
+static void qedi_percpu_thread_destroy(unsigned int cpu)
+{
+ struct qedi_percpu_s *p;
+ struct task_struct *thread;
+ struct qedi_work *work, *tmp;
+
+ p = &per_cpu(qedi_percpu, cpu);
+ spin_lock_bh(&p->p_work_lock);
+ thread = p->iothread;
+ p->iothread = NULL;
+
+ list_for_each_entry_safe(work, tmp, &p->work_list, list) {
+ list_del_init(&work->list);
+ qedi_fp_process_cqes(work);
+ if (!work->is_solicited)
+ kfree(work);
+ }
+
+ spin_unlock_bh(&p->p_work_lock);
+ if (thread)
+ kthread_stop(thread);
+}
+
+static int qedi_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
+ QEDI_ERR(NULL, "CPU %d online.\n", cpu);
+ qedi_percpu_thread_create(cpu);
+ break;
+ case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
+ QEDI_ERR(NULL, "CPU %d offline.\n", cpu);
+ qedi_percpu_thread_destroy(cpu);
+ break;
+ default:
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block qedi_cpu_notifier = {
+ .notifier_call = qedi_cpu_callback,
+};
+
+static void __qedi_remove(struct pci_dev *pdev, int mode)
+{
+ struct qedi_ctx *qedi = pci_get_drvdata(pdev);
+
+ if (qedi->tmf_thread) {
+ flush_workqueue(qedi->tmf_thread);
+ destroy_workqueue(qedi->tmf_thread);
+ qedi->tmf_thread = NULL;
+ }
+
+ if (qedi->offload_thread) {
+ flush_workqueue(qedi->offload_thread);
+ destroy_workqueue(qedi->offload_thread);
+ qedi->offload_thread = NULL;
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ qedi_dbg_host_exit(&qedi->dbg_ctx);
+#endif
+ if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
+ qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
+
+ qedi_sync_free_irqs(qedi);
+
+ if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
+ qedi_ops->stop(qedi->cdev);
+ qedi_ops->ll2->stop(qedi->cdev);
+ }
+
+ if (mode == QEDI_MODE_NORMAL)
+ qedi_free_iscsi_pf_param(qedi);
+
+ if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
+ qedi_ops->common->slowpath_stop(qedi->cdev);
+ qedi_ops->common->remove(qedi->cdev);
+ }
+
+ qedi_destroy_fp(qedi);
+
+ if (mode == QEDI_MODE_NORMAL) {
+ qedi_release_cid_que(qedi);
+ qedi_cm_free_mem(qedi);
+ qedi_free_uio(qedi->udev);
+ qedi_free_itt(qedi);
+
+ iscsi_host_remove(qedi->shost);
+ iscsi_host_free(qedi->shost);
+
+ if (qedi->ll2_recv_thread) {
+ kthread_stop(qedi->ll2_recv_thread);
+ qedi->ll2_recv_thread = NULL;
+ }
+ qedi_ll2_free_skbs(qedi);
+ }
+}
+
+static int __qedi_probe(struct pci_dev *pdev, int mode)
+{
+ struct qedi_ctx *qedi;
+ struct qed_ll2_params params;
+ u32 dp_module = 0;
+ u8 dp_level = 0;
+ bool is_vf = false;
+ char host_buf[16];
+ struct qed_link_params link_params;
+ struct qed_slowpath_params sp_params;
+ struct qed_probe_params qed_params;
+ void *task_start, *task_end;
+ int rc;
+ u16 tmp;
+
+ if (mode != QEDI_MODE_RECOVERY) {
+ qedi = qedi_host_alloc(pdev);
+ if (!qedi) {
+ rc = -ENOMEM;
+ goto exit_probe;
+ }
+ } else {
+ qedi = pci_get_drvdata(pdev);
+ }
+
+ memset(&qed_params, 0, sizeof(qed_params));
+ qed_params.protocol = QED_PROTOCOL_ISCSI;
+ qed_params.dp_module = dp_module;
+ qed_params.dp_level = dp_level;
+ qed_params.is_vf = is_vf;
+ qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
+ if (!qedi->cdev) {
+ rc = -ENODEV;
+ QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
+ goto free_host;
+ }
+
+ qedi->msix_count = MAX_NUM_MSIX_PF;
+ atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
+
+ if (mode != QEDI_MODE_RECOVERY) {
+ rc = qedi_set_iscsi_pf_param(qedi);
+ if (rc) {
+ rc = -ENOMEM;
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Set iSCSI pf param fail\n");
+ goto free_host;
+ }
+ }
+
+ qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
+
+ rc = qedi_prepare_fp(qedi);
+ if (rc) {
+ QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
+ goto free_pf_params;
+ }
+
+ /* Start the Slowpath-process */
+ memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
+ sp_params.int_mode = qedi_int_mode_to_enum();
+ sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
+ sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
+ sp_params.drv_rev = QEDI_DRIVER_REV_VER;
+ sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
+ strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
+ rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
+ if (rc) {
+ QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
+ goto stop_hw;
+ }
+
+ /* update_pf_params needs to be called before and after slowpath
+ * start
+ */
+ qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
+
+ qedi_setup_int(qedi);
+ if (rc)
+ goto stop_iscsi_func;
+
+ qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
+
+ /* Learn information crucial for qedi to progress */
+ rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
+ if (rc)
+ goto stop_iscsi_func;
+
+ /* Record BDQ producer doorbell addresses */
+ qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
+ qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
+ "BDQ primary_prod=%p secondary_prod=%p.\n",
+ qedi->bdq_primary_prod,
+ qedi->bdq_secondary_prod);
+
+ /*
+ * We need to write the number of BDs in the BDQ we've preallocated so
+ * the f/w will do a prefetch and we'll get an unsolicited CQE when a
+ * packet arrives.
+ */
+ qedi->bdq_prod_idx = QEDI_BDQ_NUM;
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
+ "Writing %d to primary and secondary BDQ doorbell registers.\n",
+ qedi->bdq_prod_idx);
+ writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
+ tmp = readw(qedi->bdq_primary_prod);
+ writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
+ tmp = readw(qedi->bdq_secondary_prod);
+
+ ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
+ qedi->mac);
+
+ sprintf(host_buf, "host_%d", qedi->shost->host_no);
+ qedi_ops->common->set_id(qedi->cdev, host_buf, QEDI_MODULE_VERSION);
+
+ qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
+
+ memset(¶ms, 0, sizeof(params));
+ params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
+ qedi->ll2_mtu = DEF_PATH_MTU;
+ params.drop_ttl0_packets = 0;
+ params.rx_vlan_stripping = 1;
+ ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
+
+ if (mode != QEDI_MODE_RECOVERY) {
+ /* set up rx path */
+ INIT_LIST_HEAD(&qedi->ll2_skb_list);
+ spin_lock_init(&qedi->ll2_lock);
+ /* start qedi context */
+ spin_lock_init(&qedi->hba_lock);
+ spin_lock_init(&qedi->task_idx_lock);
+ }
+ qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
+ qedi_ops->ll2->start(qedi->cdev, ¶ms);
+
+ if (mode != QEDI_MODE_RECOVERY) {
+ qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
+ (void *)qedi,
+ "qedi_ll2_thread");
+ }
+
+ rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
+ qedi, qedi_iscsi_event_cb);
+ if (rc) {
+ rc = -ENODEV;
+ QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
+ goto stop_slowpath;
+ }
+
+ task_start = qedi_get_task_mem(&qedi->tasks, 0);
+ task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
+ "Task context start=%p, end=%p block_size=%u.\n",
+ task_start, task_end, qedi->tasks.size);
+
+ memset(&link_params, 0, sizeof(link_params));
+ link_params.link_up = true;
+ rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
+ if (rc) {
+ QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
+ atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops,
+ &qedi_dbg_fops);
+#endif
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
+ QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
+ FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
+
+ if (mode == QEDI_MODE_NORMAL) {
+ if (iscsi_host_add(qedi->shost, &pdev->dev)) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Could not add iscsi host\n");
+ rc = -ENOMEM;
+ goto remove_host;
+ }
+
+ /* Allocate uio buffers */
+ rc = qedi_alloc_uio_rings(qedi);
+ if (rc) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "UIO alloc ring failed err=%d\n", rc);
+ goto remove_host;
+ }
+
+ rc = qedi_init_uio(qedi);
+ if (rc) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "UIO init failed, err=%d\n", rc);
+ goto free_uio;
+ }
+
+ /* host the array on iscsi_conn */
+ rc = qedi_setup_cid_que(qedi);
+ if (rc) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Could not setup cid que\n");
+ goto free_uio;
+ }
+
+ rc = qedi_cm_alloc_mem(qedi);
+ if (rc) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Could not alloc cm memory\n");
+ goto free_cid_que;
+ }
+
+ rc = qedi_alloc_itt(qedi);
+ if (rc) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Could not alloc itt memory\n");
+ goto free_cid_que;
+ }
+
+ sprintf(host_buf, "host_%d", qedi->shost->host_no);
+ qedi->tmf_thread = create_singlethread_workqueue(host_buf);
+ if (!qedi->tmf_thread) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Unable to start tmf thread!\n");
+ rc = -ENODEV;
+ goto free_cid_que;
+ }
+
+ sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
+ qedi->offload_thread = create_workqueue(host_buf);
+ if (!qedi->offload_thread) {
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Unable to start offload thread!\n");
+ rc = -ENODEV;
+ goto free_cid_que;
+ }
+
+ /* F/w needs 1st task context memory entry for performance */
+ set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
+ atomic_set(&qedi->num_offloads, 0);
+ }
+
+ return 0;
+
+free_cid_que:
+ qedi_release_cid_que(qedi);
+free_uio:
+ qedi_free_uio(qedi->udev);
+remove_host:
+#ifdef CONFIG_DEBUG_FS
+ qedi_dbg_host_exit(&qedi->dbg_ctx);
+#endif
+ iscsi_host_remove(qedi->shost);
+stop_iscsi_func:
+ qedi_ops->stop(qedi->cdev);
+stop_slowpath:
+ qedi_ops->common->slowpath_stop(qedi->cdev);
+stop_hw:
+ qedi_ops->common->remove(qedi->cdev);
+free_pf_params:
+ qedi_free_iscsi_pf_param(qedi);
+free_host:
+ iscsi_host_free(qedi->shost);
+exit_probe:
+ return rc;
+}
+
+static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ return __qedi_probe(pdev, QEDI_MODE_NORMAL);
+}
+
+static void qedi_remove(struct pci_dev *pdev)
+{
+ __qedi_remove(pdev, QEDI_MODE_NORMAL);
+}
+
+static struct pci_device_id qedi_pci_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
+ { 0 },
+};
+MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
+
+static struct pci_driver qedi_pci_driver = {
+ .name = QEDI_MODULE_NAME,
+ .id_table = qedi_pci_tbl,
+ .probe = qedi_probe,
+ .remove = qedi_remove,
+};
+
+static int __init qedi_init(void)
+{
+ int rc = 0;
+ int ret;
+ struct qedi_percpu_s *p;
+ unsigned int cpu = 0;
+
+ qedi_ops = qed_get_iscsi_ops();
+ if (!qedi_ops) {
+ QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
+ rc = -EINVAL;
+ goto exit_qedi_init_0;
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ qedi_dbg_init("qedi");
+#endif
+
+ register_hotcpu_notifier(&qedi_cpu_notifier);
+
+ ret = pci_register_driver(&qedi_pci_driver);
+ if (ret) {
+ QEDI_ERR(NULL, "Failed to register driver\n");
+ rc = -EINVAL;
+ goto exit_qedi_init_2;
+ }
+
+ for_each_possible_cpu(cpu) {
+ p = &per_cpu(qedi_percpu, cpu);
+ INIT_LIST_HEAD(&p->work_list);
+ spin_lock_init(&p->p_work_lock);
+ p->iothread = NULL;
+ }
+
+ for_each_online_cpu(cpu)
+ qedi_percpu_thread_create(cpu);
+
+ return rc;
+
+exit_qedi_init_2:
+exit_qedi_init_1:
+#ifdef CONFIG_DEBUG_FS
+ qedi_dbg_exit();
+#endif
+ qed_put_iscsi_ops();
+exit_qedi_init_0:
+ return rc;
+}
+
+static void __exit qedi_cleanup(void)
+{
+ unsigned int cpu = 0;
+
+ for_each_online_cpu(cpu)
+ qedi_percpu_thread_destroy(cpu);
+
+ pci_unregister_driver(&qedi_pci_driver);
+ unregister_hotcpu_notifier(&qedi_cpu_notifier);
+
+#ifdef CONFIG_DEBUG_FS
+ qedi_dbg_exit();
+#endif
+ qed_put_iscsi_ops();
+}
+
+MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_VERSION(QEDI_MODULE_VERSION);
+module_init(qedi_init);
+module_exit(qedi_cleanup);
diff --git a/drivers/scsi/qedi/qedi_sysfs.c b/drivers/scsi/qedi/qedi_sysfs.c
new file mode 100644
index 0000000..a2cc3ed
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_sysfs.c
@@ -0,0 +1,52 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#include "qedi.h"
+#include "qedi_gbl.h"
+#include "qedi_iscsi.h"
+#include "qedi_dbg.h"
+
+static inline struct qedi_ctx *qedi_dev_to_hba(struct device *dev)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+
+ return iscsi_host_priv(shost);
+}
+
+static ssize_t qedi_show_port_state(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct qedi_ctx *qedi = qedi_dev_to_hba(dev);
+
+ if (atomic_read(&qedi->link_state) == QEDI_LINK_UP)
+ return sprintf(buf, "Online\n");
+ else
+ return sprintf(buf, "Linkdown\n");
+}
+
+static ssize_t qedi_show_speed(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct qedi_ctx *qedi = qedi_dev_to_hba(dev);
+ struct qed_link_output if_link;
+
+ qedi_ops->common->get_link(qedi->cdev, &if_link);
+
+ return sprintf(buf, "%d Gbit\n", if_link.speed / 1000);
+}
+
+static DEVICE_ATTR(port_state, S_IRUGO, qedi_show_port_state, NULL);
+static DEVICE_ATTR(speed, S_IRUGO, qedi_show_speed, NULL);
+
+struct device_attribute *qedi_shost_attrs[] = {
+ &dev_attr_port_state,
+ &dev_attr_speed,
+ NULL
+};
diff --git a/drivers/scsi/qedi/qedi_version.h b/drivers/scsi/qedi/qedi_version.h
new file mode 100644
index 0000000..9543a1b
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_version.h
@@ -0,0 +1,14 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#define QEDI_MODULE_VERSION "8.10.3.0"
+#define QEDI_DRIVER_MAJOR_VER 8
+#define QEDI_DRIVER_MINOR_VER 10
+#define QEDI_DRIVER_REV_VER 3
+#define QEDI_DRIVER_ENG_VER 0
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@xxxxxxx +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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