diff options
| author | Dean Luick | 2015-11-17 03:59:34 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2015-12-21 22:45:38 +0100 |
| commit | 5d9157aafb16bed45e3bf167baa16f1fbe1090cd (patch) | |
| tree | 01511aeafec9e547166d5b06804c132edacf48f7 /drivers/staging/rdma/hfi1/chip.c | |
| parent | staging/rdma/hfi1: rework is_a0() and is_bx() (diff) | |
| download | kernel-qcow2-linux-5d9157aafb16bed45e3bf167baa16f1fbe1090cd.tar.gz kernel-qcow2-linux-5d9157aafb16bed45e3bf167baa16f1fbe1090cd.tar.xz kernel-qcow2-linux-5d9157aafb16bed45e3bf167baa16f1fbe1090cd.zip | |
staging/rdma/hfi1: Read EFI variable for device description
Read an EFI variable for the device description. Create the
infrastructure for additional variable reads.
Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/rdma/hfi1/chip.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/chip.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/drivers/staging/rdma/hfi1/chip.c b/drivers/staging/rdma/hfi1/chip.c index 3235324659ba..bcbd831d2b73 100644 --- a/drivers/staging/rdma/hfi1/chip.c +++ b/drivers/staging/rdma/hfi1/chip.c @@ -63,6 +63,7 @@ #include "pio.h" #include "sdma.h" #include "eprom.h" +#include "efivar.h" #define NUM_IB_PORTS 1 @@ -10461,6 +10462,32 @@ static void asic_should_init(struct hfi1_devdata *dd) spin_unlock_irqrestore(&hfi1_devs_lock, flags); } +/* + * Set dd->boardname. Use a generic name if a name is not returned from + * EFI variable space. + * + * Return 0 on success, -ENOMEM if space could not be allocated. + */ +static int obtain_boardname(struct hfi1_devdata *dd) +{ + /* generic board description */ + const char generic[] = + "Intel Omni-Path Host Fabric Interface Adapter 100 Series"; + unsigned long size; + int ret; + + ret = read_hfi1_efi_var(dd, "description", &size, + (void **)&dd->boardname); + if (ret) { + dd_dev_err(dd, "Board description not found\n"); + /* use generic description */ + dd->boardname = kstrdup(generic, GFP_KERNEL); + if (!dd->boardname) + return -ENOMEM; + } + return 0; +} + /** * Allocate and initialize the device structure for the hfi. * @dev: the pci_dev for hfi1_ib device @@ -10658,18 +10685,13 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev, parse_platform_config(dd); - /* add board names as they are defined */ - dd->boardname = kmalloc(64, GFP_KERNEL); - if (!dd->boardname) + ret = obtain_boardname(dd); + if (ret) goto bail_cleanup; - snprintf(dd->boardname, 64, "Board ID 0x%llx", - dd->revision >> CCE_REVISION_BOARD_ID_LOWER_NIBBLE_SHIFT - & CCE_REVISION_BOARD_ID_LOWER_NIBBLE_MASK); snprintf(dd->boardversion, BOARD_VERS_MAX, - "ChipABI %u.%u, %s, ChipRev %u.%u, SW Compat %llu\n", + "ChipABI %u.%u, ChipRev %u.%u, SW Compat %llu\n", HFI1_CHIP_VERS_MAJ, HFI1_CHIP_VERS_MIN, - dd->boardname, (u32)dd->majrev, (u32)dd->minrev, (dd->revision >> CCE_REVISION_SW_SHIFT) |