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isci: Move firmware loading to per PCI device

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Moved the firmware loading from per adapter to per PCI device. This should
prevent firmware from being loaded twice becuase of 2 SCU controller per
PCI device. We do have to do it per PCI device because request_firmware()
requires a struct device passed in.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dave Jiang
2011-02-22 01:27:03 -08:00
committed by Dan Williams
parent 92cd51153d
commit 858d4aa741
3 changed files with 134 additions and 159 deletions
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91
drivers/scsi/isci/init.c
View File

@@ -82,6 +82,8 @@ static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = {
{}
};
struct isci_firmware *isci_firmware;
static int __devinit isci_pci_probe(
struct pci_dev *pdev,
const struct pci_device_id *device_id_p);
@@ -519,11 +521,73 @@ static void check_si_rev(struct pci_dev *pdev)
}
static int isci_verify_firmware(const struct firmware *fw,
struct isci_firmware *isci_fw)
{
const u8 *tmp;
if (fw->size < ISCI_FIRMWARE_MIN_SIZE)
return -EINVAL;
tmp = fw->data;
/* 12th char should be the NULL terminate for the ID string */
if (tmp[11] != '\0')
return -EINVAL;
if (strncmp("#SCU MAGIC#", tmp, 11) != 0)
return -EINVAL;
isci_fw->id = tmp;
isci_fw->version = fw->data[ISCI_FW_VER_OFS];
isci_fw->subversion = fw->data[ISCI_FW_SUBVER_OFS];
tmp = fw->data + ISCI_FW_DATA_OFS;
while (*tmp != ISCI_FW_HDR_EOF) {
switch (*tmp) {
case ISCI_FW_HDR_PHYMASK:
tmp++;
isci_fw->phy_masks_size = *tmp;
tmp++;
isci_fw->phy_masks = (const u32 *)tmp;
tmp += sizeof(u32) * isci_fw->phy_masks_size;
break;
case ISCI_FW_HDR_PHYGEN:
tmp++;
isci_fw->phy_gens_size = *tmp;
tmp++;
isci_fw->phy_gens = (const u32 *)tmp;
tmp += sizeof(u32) * isci_fw->phy_gens_size;
break;
case ISCI_FW_HDR_SASADDR:
tmp++;
isci_fw->sas_addrs_size = *tmp;
tmp++;
isci_fw->sas_addrs = (const u64 *)tmp;
tmp += sizeof(u64) * isci_fw->sas_addrs_size;
break;
default:
pr_err("bad field in firmware binary blob\n");
return -EINVAL;
}
}
pr_info("isci firmware v%u.%u loaded.\n",
isci_fw->version, isci_fw->subversion);
return SCI_SUCCESS;
}
static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct isci_pci_info *pci_info;
int err, i;
struct isci_host *isci_host;
const struct firmware *fw = NULL;
check_si_rev(pdev);
@@ -532,6 +596,33 @@ static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_devic
return -ENOMEM;
pci_set_drvdata(pdev, pci_info);
err = request_firmware(&fw, ISCI_FW_NAME, &pdev->dev);
if (err) {
dev_warn(&pdev->dev,
"Loading firmware failed, using default values\n");
dev_warn(&pdev->dev,
"Default OEM configuration being used:"
" 4 narrow ports, and default SAS Addresses\n");
} else {
isci_firmware = devm_kzalloc(&pdev->dev,
sizeof(struct isci_firmware),
GFP_KERNEL);
if (isci_firmware) {
err = isci_verify_firmware(fw, isci_firmware);
if (err != SCI_SUCCESS) {
dev_warn(&pdev->dev,
"firmware verification failed\n");
dev_warn(&pdev->dev,
"Default OEM configuration being used:"
" 4 narrow ports, and default SAS "
"Addresses\n");
devm_kfree(&pdev->dev, isci_firmware);
isci_firmware = NULL;
}
}
release_firmware(fw);
}
err = isci_pci_init(pdev);
if (err)
return err;