diff options
| -rw-r--r-- | drivers/scsi/isci/probe_roms.c | 73 | ||||
| -rw-r--r-- | drivers/scsi/isci/probe_roms.h | 2 |
2 files changed, 24 insertions, 51 deletions
diff --git a/drivers/scsi/isci/probe_roms.c b/drivers/scsi/isci/probe_roms.c index 9bc173fa49e1..084fdc60548f 100644 --- a/drivers/scsi/isci/probe_roms.c +++ b/drivers/scsi/isci/probe_roms.c @@ -34,14 +34,8 @@ #include "task.h" #include "probe_roms.h" -struct efi_variable { - efi_char16_t VariableName[1024/sizeof(efi_char16_t)]; - efi_guid_t VendorGuid; - unsigned long DataSize; - __u8 Data[1024]; - efi_status_t Status; - __u32 Attributes; -} __attribute__((packed)); +static efi_char16_t isci_efivar_name[] = + {'R', 's', 't', 'S', 'c', 'u', 'O'}; struct isci_orom *isci_request_oprom(struct pci_dev *pdev) { @@ -169,62 +163,50 @@ struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmw static struct efi *get_efi(void) { - #ifdef CONFIG_EFI +#ifdef CONFIG_EFI return &efi; - #else +#else return NULL; - #endif +#endif } struct isci_orom *isci_get_efi_var(struct pci_dev *pdev) { - struct efi_variable *evar; efi_status_t status; - struct isci_orom *rom = NULL; + struct isci_orom *rom; struct isci_oem_hdr *oem_hdr; u8 *tmp, sum; int j; - size_t copy_len; + ssize_t data_len; + u8 *efi_data; + u32 efi_attrib = 0; - evar = devm_kzalloc(&pdev->dev, - sizeof(struct efi_variable), - GFP_KERNEL); - if (!evar) { + data_len = 1024; + efi_data = devm_kzalloc(&pdev->dev, data_len, GFP_KERNEL); + if (!efi_data) { dev_warn(&pdev->dev, - "Unable to allocate memory for EFI var\n"); + "Unable to allocate memory for EFI data\n"); return NULL; } - rom = devm_kzalloc(&pdev->dev, sizeof(*rom), GFP_KERNEL); - if (!rom) { - dev_warn(&pdev->dev, - "Unable to allocate memory for orom\n"); - return NULL; - } - - for (j = 0; j < strlen(ISCI_EFI_VAR_NAME) + 1; j++) - evar->VariableName[j] = ISCI_EFI_VAR_NAME[j]; - - evar->DataSize = 1024; - evar->VendorGuid = ISCI_EFI_VENDOR_GUID; - evar->Attributes = ISCI_EFI_ATTRIBUTES; + rom = (struct isci_orom *)(efi_data + sizeof(struct isci_oem_hdr)); if (get_efi()) - status = get_efi()->get_variable(evar->VariableName, - &evar->VendorGuid, - &evar->Attributes, - &evar->DataSize, - evar->Data); + status = get_efi()->get_variable(isci_efivar_name, + &ISCI_EFI_VENDOR_GUID, + &efi_attrib, + &data_len, + efi_data); else status = EFI_NOT_FOUND; if (status != EFI_SUCCESS) { dev_warn(&pdev->dev, - "Unable to obtain EFI variable for OEM parms\n"); + "Unable to obtain EFI var data for OEM parms\n"); return NULL; } - oem_hdr = (struct isci_oem_hdr *)evar->Data; + oem_hdr = (struct isci_oem_hdr *)efi_data; if (memcmp(oem_hdr->sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) != 0) { dev_warn(&pdev->dev, @@ -233,12 +215,8 @@ struct isci_orom *isci_get_efi_var(struct pci_dev *pdev) } /* calculate checksum */ - tmp = (u8 *)oem_hdr; - for (j = 0, sum = 0; j < sizeof(oem_hdr); j++, tmp++) - sum += *tmp; - - tmp = (u8 *)rom; - for (j = 0; j < sizeof(*rom); j++, tmp++) + tmp = (u8 *)efi_data; + for (j = 0, sum = 0; j < (sizeof(*oem_hdr) + sizeof(*rom)); j++, tmp++) sum += *tmp; if (sum != 0) { @@ -247,11 +225,6 @@ struct isci_orom *isci_get_efi_var(struct pci_dev *pdev) return NULL; } - copy_len = min_t(u16, evar->DataSize, - min_t(u16, oem_hdr->len - sizeof(*oem_hdr), sizeof(*rom))); - - memcpy(rom, (char *)evar->Data + sizeof(*oem_hdr), copy_len); - if (memcmp(rom->hdr.signature, ISCI_ROM_SIG, ISCI_ROM_SIG_SIZE) != 0) { diff --git a/drivers/scsi/isci/probe_roms.h b/drivers/scsi/isci/probe_roms.h index 7e3e6d7a0a47..95c8d91aab8d 100644 --- a/drivers/scsi/isci/probe_roms.h +++ b/drivers/scsi/isci/probe_roms.h @@ -58,6 +58,7 @@ #ifdef __KERNEL__ #include <linux/firmware.h> #include <linux/pci.h> +#include <linux/efi.h> #include "isci.h" #define SCIC_SDS_PARM_NO_SPEED 0 @@ -202,7 +203,6 @@ struct isci_oem_hdr { #define ISCI_EFI_VENDOR_GUID \ EFI_GUID(0x193dfefa, 0xa445, 0x4302, 0x99, 0xd8, 0xef, 0x3a, 0xad, \ 0x1a, 0x04, 0xc6) -#define ISCI_EFI_ATTRIBUTES 0 #define ISCI_EFI_VAR_NAME "RstScuO" /* Allowed PORT configuration modes APC Automatic PORT configuration mode is |