diff options
| author | Ben Widawsky <ben.widawsky@intel.com> | 2021-10-09 09:44:45 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2021-10-29 11:53:52 -0700 |
| commit | 55006a2c94645b4da85dea48c3752c4eb28f1711 (patch) | |
| tree | d4a04a6ec0680cd46fe7186c0dccd46462f2c67b /drivers/cxl | |
| parent | ee12203746e5cec678c7d126c9901548bfec1dd5 (diff) | |
cxl/pci: Use pci core's DVSEC functionality
Reduce maintenance burden of DVSEC query implementation by using the
centralized PCI core implementation.
Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
[djbw: kill cxl_pci_dvsec()]
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/163379788528.692348.11581080806976608802.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl')
| -rw-r--r-- | drivers/cxl/pci.c | 26 |
1 files changed, 2 insertions, 24 deletions
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c index 691a4e59ad8b..c734e21fb4e0 100644 --- a/drivers/cxl/pci.c +++ b/drivers/cxl/pci.c @@ -340,29 +340,6 @@ static void cxl_unmap_regblock(struct pci_dev *pdev, map->base = NULL; } -static int cxl_pci_dvsec(struct pci_dev *pdev, int dvsec) -{ - int pos; - - pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DVSEC); - if (!pos) - return 0; - - while (pos) { - u16 vendor, id; - - pci_read_config_word(pdev, pos + PCI_DVSEC_HEADER1, &vendor); - pci_read_config_word(pdev, pos + PCI_DVSEC_HEADER2, &id); - if (vendor == PCI_DVSEC_VENDOR_ID_CXL && dvsec == id) - return pos; - - pos = pci_find_next_ext_capability(pdev, pos, - PCI_EXT_CAP_ID_DVSEC); - } - - return 0; -} - static int cxl_probe_regs(struct pci_dev *pdev, struct cxl_register_map *map) { struct cxl_component_reg_map *comp_map; @@ -449,7 +426,8 @@ static int cxl_find_regblock(struct pci_dev *pdev, enum cxl_regloc_type type, u32 regloc_size, regblocks; int regloc, i; - regloc = cxl_pci_dvsec(pdev, PCI_DVSEC_ID_CXL_REGLOC_DVSEC_ID); + regloc = pci_find_dvsec_capability(pdev, PCI_DVSEC_VENDOR_ID_CXL, + PCI_DVSEC_ID_CXL_REGLOC_DVSEC_ID); if (!regloc) return -ENXIO; |