[SCSI] lpfc 8.3.2 : Addition of SLI4 Interface - Base Support

Adds new hardware and interface definitions.

Adds new interface routines - utilizing the reorganized layout of the
driver. Adds SLI-4 specific functions for attachment, initialization,
teardown, etc.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 161 insertions, 43 deletions

diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 35a976733398..516f4802f84e 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -28,8 +28,10 @@
 
 #include <scsi/scsi.h>
 
+#include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
+#include "lpfc_sli4.h"
 #include "lpfc_nl.h"
 #include "lpfc_disc.h"
 #include "lpfc_scsi.h"
@@ -45,7 +47,7 @@
  * @phba: HBA to allocate pools for
  *
  * Description: Creates and allocates PCI pools lpfc_scsi_dma_buf_pool,
- * lpfc_mbuf_pool, lpfc_hbq_pool.  Creates and allocates kmalloc-backed mempools
+ * lpfc_mbuf_pool, lpfc_hrb_pool.  Creates and allocates kmalloc-backed mempools
  * for LPFC_MBOXQ_t and lpfc_nodelist.  Also allocates the VPI bitmask.
  *
  * Notes: Not interrupt-safe.  Must be called with no locks held.  If any
@@ -56,19 +58,30 @@
  *   -ENOMEM on failure (if any memory allocations fail)
  **/
 int
-lpfc_mem_alloc(struct lpfc_hba * phba)
+lpfc_mem_alloc(struct lpfc_hba *phba, int align)
 {
         struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
         int longs;
         int i;
 
-        phba->lpfc_scsi_dma_buf_pool = pci_pool_create("lpfc_scsi_dma_buf_pool",
-                                phba->pcidev, phba->cfg_sg_dma_buf_size, 8, 0);
+        if (phba->sli_rev == LPFC_SLI_REV4)
+                phba->lpfc_scsi_dma_buf_pool =
+                        pci_pool_create("lpfc_scsi_dma_buf_pool",
+                                phba->pcidev,
+                                phba->cfg_sg_dma_buf_size,
+                                phba->cfg_sg_dma_buf_size,
+                                0);
+        else
+                phba->lpfc_scsi_dma_buf_pool =
+                        pci_pool_create("lpfc_scsi_dma_buf_pool",
+                                phba->pcidev, phba->cfg_sg_dma_buf_size,
+                                align, 0);
         if (!phba->lpfc_scsi_dma_buf_pool)
                 goto fail;
 
         phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev,
-                                                        LPFC_BPL_SIZE, 8,0);
+                                                        LPFC_BPL_SIZE,
+                                                        align, 0);
         if (!phba->lpfc_mbuf_pool)
                 goto fail_free_dma_buf_pool;
 
@@ -97,23 +110,31 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
                                                 sizeof(struct lpfc_nodelist));
         if (!phba->nlp_mem_pool)
                 goto fail_free_mbox_pool;
-
-        phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool",phba->pcidev,
-                                              LPFC_BPL_SIZE, 8, 0);
-        if (!phba->lpfc_hbq_pool)
+        phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool",
+                                              phba->pcidev,
+                                              LPFC_HDR_BUF_SIZE, align, 0);
+        if (!phba->lpfc_hrb_pool)
                 goto fail_free_nlp_mem_pool;
+        phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool",
+                                              phba->pcidev,
+                                              LPFC_DATA_BUF_SIZE, align, 0);
+        if (!phba->lpfc_drb_pool)
+                goto fail_free_hbq_pool;
 
         /* vpi zero is reserved for the physical port so add 1 to max */
         longs = ((phba->max_vpi + 1) + BITS_PER_LONG - 1) / BITS_PER_LONG;
         phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), GFP_KERNEL);
         if (!phba->vpi_bmask)
-                goto fail_free_hbq_pool;
+                goto fail_free_dbq_pool;
 
         return 0;
 
+ fail_free_dbq_pool:
+        pci_pool_destroy(phba->lpfc_drb_pool);
+        phba->lpfc_drb_pool = NULL;
  fail_free_hbq_pool:
-        lpfc_sli_hbqbuf_free_all(phba);
-        pci_pool_destroy(phba->lpfc_hbq_pool);
+        pci_pool_destroy(phba->lpfc_hrb_pool);
+        phba->lpfc_hrb_pool = NULL;
  fail_free_nlp_mem_pool:
         mempool_destroy(phba->nlp_mem_pool);
         phba->nlp_mem_pool = NULL;
@@ -136,27 +157,73 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
 }
 
 /**
- * lpfc_mem_free - Frees all PCI and memory allocated by lpfc_mem_alloc
+ * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc
  * @phba: HBA to free memory for
  *
- * Description: Frees PCI pools lpfc_scsi_dma_buf_pool, lpfc_mbuf_pool,
- * lpfc_hbq_pool.  Frees kmalloc-backed mempools for LPFC_MBOXQ_t and
- * lpfc_nodelist.  Also frees the VPI bitmask
+ * Description: Free the memory allocated by lpfc_mem_alloc routine. This
+ * routine is a the counterpart of lpfc_mem_alloc.
  *
  * Returns: None
  **/
 void
-lpfc_mem_free(struct lpfc_hba * phba)
+lpfc_mem_free(struct lpfc_hba *phba)
 {
-        struct lpfc_sli *psli = &phba->sli;
-        struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
-        LPFC_MBOXQ_t *mbox, *next_mbox;
-        struct lpfc_dmabuf   *mp;
         int i;
+        struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
 
+        /* Free VPI bitmask memory */
         kfree(phba->vpi_bmask);
+
+        /* Free HBQ pools */
         lpfc_sli_hbqbuf_free_all(phba);
+        pci_pool_destroy(phba->lpfc_drb_pool);
+        phba->lpfc_drb_pool = NULL;
+        pci_pool_destroy(phba->lpfc_hrb_pool);
+        phba->lpfc_hrb_pool = NULL;
+
+        /* Free NLP memory pool */
+        mempool_destroy(phba->nlp_mem_pool);
+        phba->nlp_mem_pool = NULL;
+
+        /* Free mbox memory pool */
+        mempool_destroy(phba->mbox_mem_pool);
+        phba->mbox_mem_pool = NULL;
+
+        /* Free MBUF memory pool */
+        for (i = 0; i < pool->current_count; i++)
+                pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
+                              pool->elements[i].phys);
+        kfree(pool->elements);
+
+        pci_pool_destroy(phba->lpfc_mbuf_pool);
+        phba->lpfc_mbuf_pool = NULL;
 
+        /* Free DMA buffer memory pool */
+        pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);
+        phba->lpfc_scsi_dma_buf_pool = NULL;
+
+        return;
+}
+
+/**
+ * lpfc_mem_free_all - Frees all PCI and driver memory
+ * @phba: HBA to free memory for
+ *
+ * Description: Free memory from PCI and driver memory pools and also those
+ * used : lpfc_scsi_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees
+ * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees
+ * the VPI bitmask.
+ *
+ * Returns: None
+ **/
+void
+lpfc_mem_free_all(struct lpfc_hba *phba)
+{
+        struct lpfc_sli *psli = &phba->sli;
+        LPFC_MBOXQ_t *mbox, *next_mbox;
+        struct lpfc_dmabuf   *mp;
+
+        /* Free memory used in mailbox queue back to mailbox memory pool */
         list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) {
                 mp = (struct lpfc_dmabuf *) (mbox->context1);
                 if (mp) {
@@ -166,6 +233,7 @@ lpfc_mem_free(struct lpfc_hba * phba)
                 list_del(&mbox->list);
                 mempool_free(mbox, phba->mbox_mem_pool);
         }
+        /* Free memory used in mailbox cmpl list back to mailbox memory pool */
         list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) {
                 mp = (struct lpfc_dmabuf *) (mbox->context1);
                 if (mp) {
@@ -175,8 +243,10 @@ lpfc_mem_free(struct lpfc_hba * phba)
                 list_del(&mbox->list);
                 mempool_free(mbox, phba->mbox_mem_pool);
         }
-
+        /* Free the active mailbox command back to the mailbox memory pool */
+        spin_lock_irq(&phba->hbalock);
         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+        spin_unlock_irq(&phba->hbalock);
         if (psli->mbox_active) {
                 mbox = psli->mbox_active;
                 mp = (struct lpfc_dmabuf *) (mbox->context1);
@@ -188,27 +258,14 @@ lpfc_mem_free(struct lpfc_hba * phba)
                 psli->mbox_active = NULL;
         }
 
-        for (i = 0; i < pool->current_count; i++)
-                pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
-                                                 pool->elements[i].phys);
-        kfree(pool->elements);
-
-        pci_pool_destroy(phba->lpfc_hbq_pool);
-        mempool_destroy(phba->nlp_mem_pool);
-        mempool_destroy(phba->mbox_mem_pool);
-
-        pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);
-        pci_pool_destroy(phba->lpfc_mbuf_pool);
-
-        phba->lpfc_hbq_pool = NULL;
-        phba->nlp_mem_pool = NULL;
-        phba->mbox_mem_pool = NULL;
-        phba->lpfc_scsi_dma_buf_pool = NULL;
-        phba->lpfc_mbuf_pool = NULL;
+        /* Free and destroy all the allocated memory pools */
+        lpfc_mem_free(phba);
 
         /* Free the iocb lookup array */
         kfree(psli->iocbq_lookup);
         psli->iocbq_lookup = NULL;
+
+        return;
 }
 
 /**
@@ -305,7 +362,7 @@ lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
  * lpfc_els_hbq_alloc - Allocate an HBQ buffer
  * @phba: HBA to allocate HBQ buffer for
  *
- * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hbq_pool PCI
+ * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI
  * pool along a non-DMA-mapped container for it.
  *
  * Notes: Not interrupt-safe.  Must be called with no locks held.
@@ -323,7 +380,7 @@ lpfc_els_hbq_alloc(struct lpfc_hba *phba)
         if (!hbqbp)
                 return NULL;
 
-        hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL,
+        hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL,
                                           &hbqbp->dbuf.phys);
         if (!hbqbp->dbuf.virt) {
                 kfree(hbqbp);
@@ -334,7 +391,7 @@ lpfc_els_hbq_alloc(struct lpfc_hba *phba)
 }
 
 /**
- * lpfc_mem_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc
+ * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc
  * @phba: HBA buffer was allocated for
  * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc
  *
@@ -348,12 +405,73 @@ lpfc_els_hbq_alloc(struct lpfc_hba *phba)
 void
 lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp)
 {
-        pci_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys);
+        pci_pool_free(phba->lpfc_hrb_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys);
         kfree(hbqbp);
         return;
 }
 
 /**
+ * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer
+ * @phba: HBA to allocate a receive buffer for
+ *
+ * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI
+ * pool along a non-DMA-mapped container for it.
+ *
+ * Notes: Not interrupt-safe.  Must be called with no locks held.
+ *
+ * Returns:
+ *   pointer to HBQ on success
+ *   NULL on failure
+ **/
+struct hbq_dmabuf *
+lpfc_sli4_rb_alloc(struct lpfc_hba *phba)
+{
+        struct hbq_dmabuf *dma_buf;
+
+        dma_buf = kmalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL);
+        if (!dma_buf)
+                return NULL;
+
+        dma_buf->hbuf.virt = pci_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL,
+                                            &dma_buf->hbuf.phys);
+        if (!dma_buf->hbuf.virt) {
+                kfree(dma_buf);
+                return NULL;
+        }
+        dma_buf->dbuf.virt = pci_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL,
+                                            &dma_buf->dbuf.phys);
+        if (!dma_buf->dbuf.virt) {
+                pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt,
+                              dma_buf->hbuf.phys);
+                kfree(dma_buf);
+                return NULL;
+        }
+        dma_buf->size = LPFC_BPL_SIZE;
+        return dma_buf;
+}
+
+/**
+ * lpfc_sli4_rb_free - Frees a receive buffer
+ * @phba: HBA buffer was allocated for
+ * @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc
+ *
+ * Description: Frees both the container and the DMA-mapped buffers returned by
+ * lpfc_sli4_rb_alloc.
+ *
+ * Notes: Can be called with or without locks held.
+ *
+ * Returns: None
+ **/
+void
+lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab)
+{
+        pci_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys);
+        pci_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys);
+        kfree(dmab);
+        return;
+}
+
+/**
  * lpfc_in_buf_free - Free a DMA buffer
  * @phba: HBA buffer is associated with
  * @mp: Buffer to free