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hisi_sas: Scan device tree

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Scan the device tree for all properties. Also do this:

- do ioremap for SAS registers
- allocate memory for interrupt 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 00:50:32 +08:00 committed by Martin K. Petersen
parent 7eb7869f13
commit e26b2f405a
2 changed files with 54 additions and 1 deletions
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10
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -28,6 +28,8 @@
#define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
#define HISI_SAS_COMMAND_ENTRIES 8192
#define HISI_SAS_NAME_LEN 32
struct hisi_sas_phy {
struct asd_sas_phy sas_phy;
};
@ -44,6 +46,11 @@ struct hisi_hba {
struct sas_ha_struct *p;
struct platform_device *pdev;
void __iomem *regs;
struct regmap *ctrl;
u32 ctrl_reset_reg;
u32 ctrl_reset_sts_reg;
u32 ctrl_clock_ena_reg;
u8 sas_addr[SAS_ADDR_SIZE];
int n_phy;
@ -53,6 +60,9 @@ struct hisi_hba {
struct Scsi_Host *shost;
struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS];
struct hisi_sas_port port[HISI_SAS_MAX_PHYS];
int queue_count;
char *int_names;
const struct hisi_sas_hw *hw; /* Low level hw interface */
};

45
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -39,9 +39,13 @@ static struct sas_domain_function_template hisi_sas_transport_ops = {
static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
const struct hisi_sas_hw *hw)
{
struct resource *res;
struct Scsi_Host *shost;
struct hisi_hba *hisi_hba;
struct device *dev = &pdev->dev;
struct device_node *np = pdev->dev.of_node;
struct property *sas_addr_prop;
int num;
shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba));
if (!shost)
@ -53,6 +57,46 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
hisi_hba->shost = shost;
SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
sas_addr_prop = of_find_property(np, "sas-addr", NULL);
if (!sas_addr_prop || (sas_addr_prop->length != SAS_ADDR_SIZE))
goto err_out;
memcpy(hisi_hba->sas_addr, sas_addr_prop->value, SAS_ADDR_SIZE);
if (of_property_read_u32(np, "ctrl-reset-reg",
&hisi_hba->ctrl_reset_reg))
goto err_out;
if (of_property_read_u32(np, "ctrl-reset-sts-reg",
&hisi_hba->ctrl_reset_sts_reg))
goto err_out;
if (of_property_read_u32(np, "ctrl-clock-ena-reg",
&hisi_hba->ctrl_clock_ena_reg))
goto err_out;
if (of_property_read_u32(np, "phy-count", &hisi_hba->n_phy))
goto err_out;
if (of_property_read_u32(np, "queue-count", &hisi_hba->queue_count))
goto err_out;
num = of_irq_count(np);
hisi_hba->int_names = devm_kcalloc(dev, num,
HISI_SAS_NAME_LEN,
GFP_KERNEL);
if (!hisi_hba->int_names)
goto err_out;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hisi_hba->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(hisi_hba->regs))
goto err_out;
hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(
np, "hisilicon,sas-syscon");
if (IS_ERR(hisi_hba->ctrl))
goto err_out;
return shost;
err_out:
dev_err(dev, "shost alloc failed\n");
@ -79,7 +123,6 @@ int hisi_sas_probe(struct platform_device *pdev,
sha = SHOST_TO_SAS_HA(shost);
hisi_hba = shost_priv(shost);
platform_set_drvdata(pdev, sha);
hisi_hba->n_phy = HISI_SAS_MAX_PHYS;
phy_nr = port_nr = hisi_hba->n_phy;
arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);