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| author | David E. Box <david.e.box@linux.intel.com> | 2023-11-29 14:21:20 -0800 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2023-12-04 14:53:43 +0100 |
| commit | e97ec7f621fbfdce07bf1b98a26883ee19281747 (patch) | |
| tree | 3f88a0283e17f7829dc71a89cd35e3e2bb159e1f /drivers/platform/x86/intel/vsec.c | |
| parent | 4edbd117ba3f7beacfb439aad60e8a5de77114b4 (diff) | |
| download | linux-stable-e97ec7f621fbfdce07bf1b98a26883ee19281747.tar.gz linux-stable-e97ec7f621fbfdce07bf1b98a26883ee19281747.tar.bz2 linux-stable-e97ec7f621fbfdce07bf1b98a26883ee19281747.zip | |
platform/x86/intel/vsec: Add base address field
Some devices may emulate PCI VSEC capabilities in MMIO. In such cases the
BAR is not readable from a config space. Provide a field for drivers to
indicate the base address to be used.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-9-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/intel/vsec.c')
| -rw-r--r-- | drivers/platform/x86/intel/vsec.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c index 5568d6236bd6..b68586731e45 100644 --- a/drivers/platform/x86/intel/vsec.c +++ b/drivers/platform/x86/intel/vsec.c @@ -154,6 +154,7 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he struct resource *tmp; struct device *parent; unsigned long quirks = info->quirks; + u64 base_addr; int i; if (info->parent) @@ -185,14 +186,18 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he if (quirks & VSEC_QUIRK_TABLE_SHIFT) header->offset >>= TABLE_OFFSET_SHIFT; + if (info->base_addr) + base_addr = info->base_addr; + else + base_addr = pdev->resource[header->tbir].start; + /* * The DVSEC/VSEC contains the starting offset and count for a block of * discovery tables. Create a resource array of these tables to the * auxiliary device driver. */ for (i = 0, tmp = res; i < header->num_entries; i++, tmp++) { - tmp->start = pdev->resource[header->tbir].start + - header->offset + i * (header->entry_size * sizeof(u32)); + tmp->start = base_addr + header->offset + i * (header->entry_size * sizeof(u32)); tmp->end = tmp->start + (header->entry_size * sizeof(u32)) - 1; tmp->flags = IORESOURCE_MEM; @@ -207,6 +212,7 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he intel_vsec_dev->resource = no_free_ptr(res); intel_vsec_dev->num_resources = header->num_entries; intel_vsec_dev->quirks = info->quirks; + intel_vsec_dev->base_addr = info->base_addr; if (header->id == VSEC_ID_SDSI) intel_vsec_dev->ida = &intel_vsec_sdsi_ida; |