[PATCH v2 07/32] scsi: hisi_sas: allocate memories and create pools
From: John Garry
Date: Mon Oct 26 2015 - 10:13:27 EST
Allocate DMA and non-DMA memories for the controller. Also
create DMA pools.
These include:
- Delivery queues
- Completion queues
- Command status buffer
- Command table
- ITCT (For device context)
- Host slot info
- IO status
- Breakpoint
- host slot indexing
- SG data
- FIS
- interrupts names
---
drivers/scsi/hisi_sas/hisi_sas.h | 31 ++++++++++++
drivers/scsi/hisi_sas/hisi_sas_main.c | 95 +++++++++++++++++++++++++++++++++++
2 files changed, 126 insertions(+)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index d93e55a..c320c10 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -24,10 +24,17 @@
#define DRV_VERSION "v1.0"
#define HISI_SAS_MAX_PHYS 9
+#define HISI_SAS_MAX_QUEUES 32
+#define HISI_SAS_QUEUE_SLOTS 512
#define HISI_SAS_MAX_ITCT_ENTRIES 4096
#define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
#define HISI_SAS_COMMAND_ENTRIES 8192
+#define HISI_SAS_STATUS_BUF_SZ \
+ (sizeof(struct hisi_sas_err_record) + 1024)
+#define HISI_SAS_COMMAND_TABLE_SZ \
+ (((sizeof(union hisi_sas_command_table)+3)/4)*4)
+
#define HISI_SAS_NAME_LEN 32
#define HISI_SAS_CTRL_REG_CNT 5
@@ -39,7 +46,11 @@ struct hisi_sas_port {
struct asd_sas_port sas_port;
};
+struct hisi_sas_slot {
+};
+
struct hisi_sas_hw {
+ int complete_hdr_size;
};
struct hisi_hba {
@@ -52,6 +63,7 @@ struct hisi_hba {
u32 ctrl_reg[HISI_SAS_CTRL_REG_CNT];
u8 sas_addr[SAS_ADDR_SIZE];
+
int n_phy;
/* SCSI/SAS glue */
@@ -62,6 +74,25 @@ struct hisi_hba {
int queue_count;
char *int_names;
+
+ struct dma_pool *sge_page_pool;
+ struct dma_pool *command_table_pool;
+ struct dma_pool *status_buffer_pool;
+ struct hisi_sas_cmd_hdr *cmd_hdr[HISI_SAS_MAX_QUEUES];
+ dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES];
+ void *complete_hdr[HISI_SAS_MAX_QUEUES];
+ dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES];
+ struct hisi_sas_initial_fis *initial_fis;
+ dma_addr_t initial_fis_dma;
+ struct hisi_sas_itct *itct;
+ dma_addr_t itct_dma;
+ struct hisi_sas_iost *iost;
+ dma_addr_t iost_dma;
+ struct hisi_sas_breakpoint *breakpoint;
+ dma_addr_t breakpoint_dma;
+ struct hisi_sas_breakpoint *sata_breakpoint;
+ dma_addr_t sata_breakpoint_dma;
+ struct hisi_sas_slot *slot_info;
const struct hisi_sas_hw *hw; /* Low level hw interface */
};
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 91f6504..e03a62b 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -37,6 +37,98 @@ static struct scsi_host_template hisi_sas_sht = {
static struct sas_domain_function_template hisi_sas_transport_ops = {
};
+static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
+{
+ int i, s;
+ struct platform_device *pdev = hisi_hba->pdev;
+ struct device *dev = &pdev->dev;
+
+
+ for (i = 0; i < hisi_hba->queue_count; i++) {
+ /* Delivery queue */
+ s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
+ hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s,
+ &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL);
+ if (!hisi_hba->cmd_hdr[i])
+ goto err_out;
+ memset(hisi_hba->cmd_hdr[i], 0, s);
+
+ /* Completion queue */
+ s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
+ hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s,
+ &hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
+ if (!hisi_hba->complete_hdr[i])
+ goto err_out;
+ memset(hisi_hba->complete_hdr[i], 0, s);
+ }
+
+ s = HISI_SAS_STATUS_BUF_SZ;
+ hisi_hba->status_buffer_pool = dma_pool_create("status_buffer",
+ dev, s, 16, 0);
+ if (!hisi_hba->status_buffer_pool)
+ goto err_out;
+
+ s = HISI_SAS_COMMAND_TABLE_SZ;
+ hisi_hba->command_table_pool = dma_pool_create("command_table",
+ dev, s, 16, 0);
+ if (!hisi_hba->command_table_pool)
+ goto err_out;
+
+ s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
+ hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
+ GFP_KERNEL);
+ if (!hisi_hba->itct)
+ goto err_out;
+
+ memset(hisi_hba->itct, 0, s);
+
+ hisi_hba->slot_info = devm_kcalloc(dev, HISI_SAS_COMMAND_ENTRIES,
+ sizeof(struct hisi_sas_slot),
+ GFP_KERNEL);
+ if (!hisi_hba->slot_info)
+ goto err_out;
+
+ s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost);
+ hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma,
+ GFP_KERNEL);
+ if (!hisi_hba->iost)
+ goto err_out;
+
+ memset(hisi_hba->iost, 0, s);
+
+ s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint);
+ hisi_hba->breakpoint = dma_alloc_coherent(dev, s,
+ &hisi_hba->breakpoint_dma, GFP_KERNEL);
+ if (!hisi_hba->breakpoint)
+ goto err_out;
+
+ memset(hisi_hba->breakpoint, 0, s);
+
+ hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev,
+ sizeof(struct hisi_sas_sge_page), 16, 0);
+ if (!hisi_hba->sge_page_pool)
+ goto err_out;
+
+ s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
+ hisi_hba->initial_fis = dma_alloc_coherent(dev, s,
+ &hisi_hba->initial_fis_dma, GFP_KERNEL);
+ if (!hisi_hba->initial_fis)
+ goto err_out;
+ memset(hisi_hba->initial_fis, 0, s);
+
+ s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2;
+ hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s,
+ &hisi_hba->sata_breakpoint_dma, GFP_KERNEL);
+ if (!hisi_hba->sata_breakpoint)
+ goto err_out;
+ memset(hisi_hba->sata_breakpoint, 0, s);
+
+ return 0;
+err_out:
+ return -ENOMEM;
+}
+
+
static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
const struct hisi_sas_hw *hw)
{
@@ -91,6 +183,9 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
if (IS_ERR(hisi_hba->ctrl))
goto err_out;
+ if (hisi_sas_alloc(hisi_hba, shost))
+ goto err_out;
+
return shost;
err_out:
dev_err(dev, "shost alloc failed\n");
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/