>From 0b428877eecefb91b7ec7e9f1a087e5ccf2b0445 Mon Sep 17 00:00:00 2001
From: Andy <ayan@xxxxxxxxxxx>
Date: Fri, 6 Nov 2009 17:25:08 +0800
Subject: [PATCH 5/7] optimization for DMA buffer
optimization for DMA buffer allocation to get
better compatbility with different OS distribution
Signed-off-by: Andy <ayan@xxxxxxxxxxx>
Signed-off-by: Jacky <jfeng@xxxxxxxxxxx>
Signed-off-by: Ke <kewei@xxxxxxxxxxx>
---
drivers/scsi/mvsas/mv_94xx.h | 2 +-
drivers/scsi/mvsas/mv_defs.h | 7 +++--
drivers/scsi/mvsas/mv_init.c | 57 +++++++++++++++++++++++++++++------------
drivers/scsi/mvsas/mv_sas.c | 9 ++++--
drivers/scsi/mvsas/mv_sas.h | 2 +
5 files changed, 53 insertions(+), 24 deletions(-)
diff --git a/drivers/scsi/mvsas/mv_94xx.h b/drivers/scsi/mvsas/mv_94xx.h
index 1df38a9..d0b081a 100644
--- a/drivers/scsi/mvsas/mv_94xx.h
+++ b/drivers/scsi/mvsas/mv_94xx.h
@@ -187,7 +187,7 @@ struct mvs_prd_imt {
struct mvs_prd {
/* 64-bit buffer address */
- __le64 addr;
+ __le64 addr;
/* 22-bit length */
__le32 im_len;
} __attribute__ ((packed));
diff --git a/drivers/scsi/mvsas/mv_defs.h b/drivers/scsi/mvsas/mv_defs.h
index 5096de8..f39f16a 100644
--- a/drivers/scsi/mvsas/mv_defs.h
+++ b/drivers/scsi/mvsas/mv_defs.h
@@ -40,7 +40,6 @@ enum chip_flavors {
/* driver compile-time configuration */
enum driver_configuration {
- MVS_SLOTS = 512, /* command slots */
MVS_TX_RING_SZ = 1024, /* TX ring size (12-bit) */
MVS_RX_RING_SZ = 1024, /* RX ring size (12-bit) */
/* software requires power-of-2
@@ -53,8 +52,8 @@ enum driver_configuration {
MVS_SSP_CMD_SZ = 64, /* SSP command table buffer size */
MVS_ATA_CMD_SZ = 96, /* SATA command table buffer size */
MVS_OAF_SZ = 64, /* Open address frame buffer size */
- MVS_QUEUE_SIZE = 32, /* Support Queue depth */
- MVS_CAN_QUEUE = MVS_SLOTS - 2, /* SCSI Queue depth */
+ MVS_QUEUE_SIZE = 64, /* Support Queue depth */
+ MVS_CAN_QUEUE = MVS_QUEUE_SIZE - 2, /* SCSI Queue depth */
MVS_SOC_CAN_QUEUE = MVS_SOC_SLOTS - 2,
};
@@ -397,6 +396,7 @@ enum mvs_event_flags {
PHY_PLUG_EVENT = (3U),
PHY_PLUG_IN = (1U << 0), /* phy plug in */
PHY_PLUG_OUT = (1U << 1), /* phy plug out */
+ EXP_BRCT_CHG = (1U << 2), /* broadcast change */
};
enum mvs_port_type {
@@ -507,4 +507,5 @@ enum pci_cfg_comm_registers {
PCR_CMD = 0x04,
PCR_MSI_CTRL = 0x50,
};
+
#endif
diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
index eca335b..fb1bee0 100644
--- a/drivers/scsi/mvsas/mv_init.c
+++ b/drivers/scsi/mvsas/mv_init.c
@@ -156,6 +156,10 @@ static void mvs_free(struct mvs_info *mvi)
if (mvi->bulk_buffer)
dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
mvi->bulk_buffer, mvi->bulk_buffer_dma);
+ if (mvi->bulk_buffer1)
+ dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
+ mvi->bulk_buffer1, mvi->bulk_buffer_dma1);
+
#endif
MVS_CHIP_DISP->chip_iounmap(mvi);
@@ -304,21 +308,37 @@ static int __devinit mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
mvi->bulk_buffer = dma_alloc_coherent(mvi->dev,
TRASH_BUCKET_SIZE,
&mvi->bulk_buffer_dma, GFP_KERNEL);
+
+ mvi->bulk_buffer1 = dma_alloc_coherent(mvi->dev,
+ TRASH_BUCKET_SIZE,
+ &mvi->bulk_buffer_dma1, GFP_KERNEL);
+
if (!mvi->bulk_buffer)
goto err_out;
#endif
- for (i = 0; i < slot_nr; i++) {
- struct mvs_slot_info *slot = &mvi->slot_info[i];
-
- slot->buf = dma_alloc_coherent(mvi->dev, MVS_SLOT_BUF_SZ,
- &slot->buf_dma, GFP_KERNEL);
- if (!slot->buf) {
+ i = 0;
+ while (i < slot_nr) {
+ buf_size = PAGE_SIZE > MVS_SLOT_BUF_SZ ?
+ PAGE_SIZE : MVS_SLOT_BUF_SZ;
+ buf = dma_alloc_coherent(mvi->dev, buf_size,
+ &buf_dma, GFP_KERNEL);
+
+ if (!buf) {
printk(KERN_DEBUG"failed to allocate slot->buf.\n");
goto err_out;
}
- memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
- ++mvi->tags_num;
+ j = 0;
+ do {
+ slot = &mvi->slot_info[i + j];
+ slot->buf = buf + MVS_SLOT_BUF_SZ * j;
+ slot->buf_dma = buf_dma + MVS_SLOT_BUF_SZ * j;
+ memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
+ ++mvi->tags_num;
+ j++;
+ } while (j < PAGE_SIZE/MVS_SLOT_BUF_SZ);
+ i += j;
}
+
/* Initialize tags */
mvs_tag_init(mvi);
return 0;
@@ -385,14 +405,17 @@ static struct mvs_info *__devinit mvs_pci_alloc(struct pci_dev *pdev,
const struct pci_device_id *ent,
struct Scsi_Host *shost, unsigned int id)
{
- struct mvs_info *mvi;
+ struct mvs_info *mvi = NULL;
struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
- mvi = kzalloc(sizeof(*mvi) + MVS_SLOTS * sizeof(struct mvs_slot_info),
- GFP_KERNEL);
+ mvi = kzalloc(sizeof(*mvi) +
+ (1L << mvs_chips[ent->driver_data].slot_width)
+ * sizeof(struct mvs_slot_info), GFP_KERNEL);
if (!mvi)
return NULL;
-
+ memset(mvi, 0, sizeof(*mvi)+(1L <<
+ mvs_chips[ent->driver_data].slot_width)
+ * sizeof(struct mvs_slot_info));
mvi->pdev = pdev;
mvi->dev = &pdev->dev;
mvi->chip_id = ent->driver_data;
@@ -425,10 +448,10 @@ static int pci_go_64(struct pci_dev *pdev)
{
int rc;
- if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
- rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
+ rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
if (rc) {
- rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
if (rc) {
dev_printk(KERN_ERR, &pdev->dev,
"64-bit DMA enable failed\n");
@@ -436,13 +459,13 @@ static int pci_go_64(struct pci_dev *pdev)
}
}
} else {
- rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (rc) {
dev_printk(KERN_ERR, &pdev->dev,
"32-bit DMA enable failed\n");
return rc;
}
- rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
if (rc) {
dev_printk(KERN_ERR, &pdev->dev,
"32-bit consistent DMA enable failed\n");
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 7423fc9..09023d7 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -719,9 +719,12 @@ static int mvs_task_prep_ata(struct mvs_info *mvi,
/* fill in PRD (scatter/gather) table, if any */
MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
#ifndef DISABLE_HOTPLUG_DMA_FIX
- if (task->data_dir == DMA_FROM_DEVICE)
- MVS_CHIP_DISP->dma_fix(mvi->bulk_buffer_dma,
- TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
+ if (task->data_dir == DMA_FROM_DEVICE) {
+ dma_addr_t _dmaAddr = ((phy_mask <= 0x08) ?
+ mvi->bulk_buffer_dma : mvi->bulk_buffer_dma1);
+ MVS_CHIP_DISP->dma_fix(_dmaAddr, TRASH_BUCKET_SIZE,
+ tei->n_elem, buf_prd);
+ }
#endif
return 0;
}
diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h
index ffddace..b0f43e7 100644
--- a/drivers/scsi/mvsas/mv_sas.h
+++ b/drivers/scsi/mvsas/mv_sas.h
@@ -340,6 +340,8 @@ struct mvs_info {
#ifndef DISABLE_HOTPLUG_DMA_FIX
void *bulk_buffer;
dma_addr_t bulk_buffer_dma;
+ void *bulk_buffer1;
+ dma_addr_t bulk_buffer_dma1;
#define TRASH_BUCKET_SIZE 0x20000
#endif
struct mvs_slot_info slot_info[0];
--
1.6.2.2
--
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