diff options
Diffstat (limited to 'drivers/platform/x86/intel_pmt_class.c')
| -rw-r--r-- | drivers/platform/x86/intel_pmt_class.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_pmt_class.c b/drivers/platform/x86/intel_pmt_class.c index ee2b3bbeb83d..c86ff15b1ed5 100644 --- a/drivers/platform/x86/intel_pmt_class.c +++ b/drivers/platform/x86/intel_pmt_class.c @@ -20,6 +20,28 @@ #define PMT_XA_LIMIT XA_LIMIT(PMT_XA_START, PMT_XA_MAX) /* + * Early implementations of PMT on client platforms have some + * differences from the server platforms (which use the Out Of Band + * Management Services Module OOBMSM). This list tracks those + * platforms as needed to handle those differences. Newer client + * platforms are expected to be fully compatible with server. + */ +static const struct pci_device_id pmt_telem_early_client_pci_ids[] = { + { PCI_VDEVICE(INTEL, 0x467d) }, /* ADL */ + { PCI_VDEVICE(INTEL, 0x490e) }, /* DG1 */ + { PCI_VDEVICE(INTEL, 0x9a0d) }, /* TGL */ + { } +}; + +bool intel_pmt_is_early_client_hw(struct device *dev) +{ + struct pci_dev *parent = to_pci_dev(dev->parent); + + return !!pci_match_id(pmt_telem_early_client_pci_ids, parent); +} +EXPORT_SYMBOL_GPL(intel_pmt_is_early_client_hw); + +/* * sysfs */ static ssize_t @@ -147,6 +169,30 @@ static int intel_pmt_populate_entry(struct intel_pmt_entry *entry, * base address = end of discovery region + base offset */ entry->base_addr = disc_res->end + 1 + header->base_offset; + + /* + * Some hardware use a different calculation for the base address + * when access_type == ACCESS_LOCAL. On the these systems + * ACCCESS_LOCAL refers to an address in the same BAR as the + * header but at a fixed offset. But as the header address was + * supplied to the driver, we don't know which BAR it was in. + * So search for the bar whose range includes the header address. + */ + if (intel_pmt_is_early_client_hw(dev)) { + int i; + + entry->base_addr = 0; + for (i = 0; i < 6; i++) + if (disc_res->start >= pci_resource_start(pci_dev, i) && + (disc_res->start <= pci_resource_end(pci_dev, i))) { + entry->base_addr = pci_resource_start(pci_dev, i) + + header->base_offset; + break; + } + if (!entry->base_addr) + return -EINVAL; + } + break; case ACCESS_BARID: /* |