From aca9012a41fbc5b3697c14b34c964daabab6e740 Mon Sep 17 00:00:00 2001
From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
Date: Tue, 18 Feb 2014 13:56:14 -0600
Subject: [PATCH] [SCSI] hpsa: do ioaccel mode 2 resource allocations

Signed-off-by: Mike Miller <michael.miller@canonical.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---
 drivers/scsi/hpsa.c | 50 +++++++++++++++++++++++++++++++++++++++++++++
 drivers/scsi/hpsa.h |  3 +++
 2 files changed, 53 insertions(+)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 1c6bd79078e8..600f3121cf27 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -5291,6 +5291,10 @@ static void hpsa_free_cmd_pool(struct ctlr_info *h)
 		pci_free_consistent(h->pdev,
 			    h->nr_cmds * sizeof(struct CommandList),
 			    h->cmd_pool, h->cmd_pool_dhandle);
+	if (h->ioaccel2_cmd_pool)
+		pci_free_consistent(h->pdev,
+			h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
+			h->ioaccel2_cmd_pool, h->ioaccel2_cmd_pool_dhandle);
 	if (h->errinfo_pool)
 		pci_free_consistent(h->pdev,
 			    h->nr_cmds * sizeof(struct ErrorInfo),
@@ -5829,6 +5833,7 @@ static void hpsa_remove_one(struct pci_dev *pdev)
 	kfree(h->cmd_pool_bits);
 	kfree(h->blockFetchTable);
 	kfree(h->ioaccel1_blockFetchTable);
+	kfree(h->ioaccel2_blockFetchTable);
 	kfree(h->hba_inquiry_data);
 	pci_disable_device(pdev);
 	pci_release_regions(pdev);
@@ -6048,6 +6053,44 @@ static int hpsa_alloc_ioaccel_cmd_and_bft(struct ctlr_info *h)
 	return 1;
 }
 
+static int ioaccel2_alloc_cmds_and_bft(struct ctlr_info *h)
+{
+	/* Allocate ioaccel2 mode command blocks and block fetch table */
+
+	h->ioaccel_maxsg =
+		readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
+	if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
+		h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
+
+#define IOACCEL2_COMMANDLIST_ALIGNMENT 128
+	BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
+			IOACCEL2_COMMANDLIST_ALIGNMENT);
+	h->ioaccel2_cmd_pool =
+		pci_alloc_consistent(h->pdev,
+			h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
+			&(h->ioaccel2_cmd_pool_dhandle));
+
+	h->ioaccel2_blockFetchTable =
+		kmalloc(((h->ioaccel_maxsg + 1) *
+				sizeof(u32)), GFP_KERNEL);
+
+	if ((h->ioaccel2_cmd_pool == NULL) ||
+		(h->ioaccel2_blockFetchTable == NULL))
+		goto clean_up;
+
+	memset(h->ioaccel2_cmd_pool, 0,
+		h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
+	return 0;
+
+clean_up:
+	if (h->ioaccel2_cmd_pool)
+		pci_free_consistent(h->pdev,
+			h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
+			h->ioaccel2_cmd_pool, h->ioaccel2_cmd_pool_dhandle);
+	kfree(h->ioaccel2_blockFetchTable);
+	return 1;
+}
+
 static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
 {
 	u32 trans_support;
@@ -6064,6 +6107,13 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
 				CFGTBL_Trans_enable_directed_msix;
 		if (hpsa_alloc_ioaccel_cmd_and_bft(h))
 			goto clean_up;
+	} else {
+		if (trans_support & CFGTBL_Trans_io_accel2) {
+				transMethod |= CFGTBL_Trans_io_accel2 |
+				CFGTBL_Trans_enable_directed_msix;
+		if (ioaccel2_alloc_cmds_and_bft(h))
+			goto clean_up;
+		}
 	}
 
 	/* TODO, check that this next line h->nreply_queues is correct */
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index 74eb22af4506..2a4a0cb4f034 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -105,6 +105,8 @@ struct ctlr_info {
 	dma_addr_t		cmd_pool_dhandle;
 	struct io_accel1_cmd	*ioaccel_cmd_pool;
 	dma_addr_t		ioaccel_cmd_pool_dhandle;
+	struct io_accel2_cmd	*ioaccel2_cmd_pool;
+	dma_addr_t		ioaccel2_cmd_pool_dhandle;
 	struct ErrorInfo 	*errinfo_pool;
 	dma_addr_t		errinfo_pool_dhandle;
 	unsigned long  		*cmd_pool_bits;
@@ -139,6 +141,7 @@ struct ctlr_info {
 	dma_addr_t reply_pool_dhandle;
 	u32 *blockFetchTable;
 	u32 *ioaccel1_blockFetchTable;
+	u32 *ioaccel2_blockFetchTable;
 	unsigned char *hba_inquiry_data;
 	u32 driver_support;
 	u32 fw_support;
-- 
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