hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

hisi_sas: Allocate memories and create pools 

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

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2015-11-18 00:50:34 +08:00 committed by Martin K. Petersen
parent c799d6bd8f
commit 6be6de1889
2 changed files with 124 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -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
struct hisi_sas_phy {
@ -38,7 +45,11 @@ 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 {
@ -63,6 +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 */
};

94
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -36,6 +36,97 @@ 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)
{
@ -97,6 +188,9 @@ 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");