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qla2xxx: Use IOCB interface to submit non-critical MBX.

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The Mailbox interface is currently over subscribed. We like
to reserve the Mailbox interface for the chip managment and
link initialization. Any non essential Mailbox command will
be routed through the IOCB interface. The IOCB interface is
able to absorb more commands.

Following commands are being routed through IOCB interface

- Get ID List (007Ch)
- Get Port DB (0064h)
- Get Link Priv Stats (006Dh)

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Quinn Tran
2017-03-15 09:48:52 -07:00
committed by Nicholas Bellinger
parent f1443eebca
commit 15f30a5752
6 changed files with 279 additions and 65 deletions
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12
drivers/scsi/qla2xxx/qla_def.h
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@@ -395,11 +395,15 @@ struct srb_iocb {
struct completion comp;
} abt;
struct ct_arg ctarg;
#define MAX_IOCB_MB_REG 28
#define SIZEOF_IOCB_MB_REG (MAX_IOCB_MB_REG * sizeof(uint16_t))
struct {
__le16 in_mb[28]; /* fr fw */
__le16 out_mb[28]; /* to fw */
__le16 in_mb[MAX_IOCB_MB_REG]; /* from FW */
__le16 out_mb[MAX_IOCB_MB_REG]; /* to FW */
void *out, *in;
dma_addr_t out_dma, in_dma;
struct completion comp;
int rc;
} mbx;
struct {
struct imm_ntfy_from_isp *ntfy;
@@ -437,7 +441,7 @@ typedef struct srb {
uint32_t handle;
uint16_t flags;
uint16_t type;
char *name;
const char *name;
int iocbs;
struct qla_qpair *qpair;
u32 gen1; /* scratch */
@@ -3364,6 +3368,8 @@ struct qla_hw_data {
uint32_t exlogins_enabled:1;
uint32_t exchoffld_enabled:1;
/* 35 bits */
uint32_t fw_started:1;
} flags;
/* This spinlock is used to protect "io transactions", you must