diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2021-09-30 16:59:09 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2021-10-06 19:03:55 +0000 |
| commit | 3710e9972bc9e35e8389bb3b47d443e3c5e01859 (patch) | |
| tree | 11e30ea067b26718929d1c84f31b1fdd4ae9aeaa /src | |
| parent | c6e2552ce6f97033f0da735e53407fd5663d2816 (diff) | |
soc/intel/common: Helper function to check CSE device `devfn` status
This patch creates a helper function in cse common code block to check
the status of any CSE `devfn`. Example: CSE, CSE_2, IDER, KT, CSE_3 and
CSE_4.
Currently cse common code is only able to read the device state of
`PCH_DEVFN_CSE` CSE device alone.
Additionally, print `slot` and 'func' number of CSE devices in case
the device is either disable or hidden.
BUG=b:200644229
TEST=Able to build and boot ADLRVP-P with this patch where the serial
message listed the CSE devices that are disabled in the device tree
as below:
HECI: CSE device 16.01 is disabled
HECI: CSE device 16.04 is disabled
HECI: CSE device 16.05 is disabled
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Change-Id: I208b07e89e3aa9d682837380809fbff01ea225b0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58064
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/common/block/cse/cse.c | 18 | ||||
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/cse.h | 6 |
2 files changed, 18 insertions, 6 deletions
diff --git a/src/soc/intel/common/block/cse/cse.c b/src/soc/intel/common/block/cse/cse.c index 471bc1b341..e41e337550 100644 --- a/src/soc/intel/common/block/cse/cse.c +++ b/src/soc/intel/common/block/cse/cse.c @@ -581,23 +581,29 @@ int heci_reset(void) return 0; } -bool is_cse_enabled(void) +bool is_cse_devfn_visible(unsigned int devfn) { - const struct device *cse_dev = pcidev_path_on_root(PCH_DEVFN_CSE); + int slot = PCI_SLOT(devfn); + int func = PCI_FUNC(devfn); - if (!cse_dev || !cse_dev->enabled) { - printk(BIOS_WARNING, "HECI: No CSE device\n"); + if (!is_devfn_enabled(devfn)) { + printk(BIOS_WARNING, "HECI: CSE device %02x.%01x is disabled\n", slot, func); return false; } - if (pci_read_config16(PCH_DEV_CSE, PCI_VENDOR_ID) == 0xFFFF) { - printk(BIOS_WARNING, "HECI: CSE device is hidden\n"); + if (pci_read_config16(PCI_DEV(0, slot, func), PCI_VENDOR_ID) == 0xFFFF) { + printk(BIOS_WARNING, "HECI: CSE device %02x.%01x is hidden\n", slot, func); return false; } return true; } +bool is_cse_enabled(void) +{ + return is_cse_devfn_visible(PCH_DEVFN_CSE); +} + uint32_t me_read_config32(int offset) { return pci_read_config32(PCH_DEV_CSE, offset); diff --git a/src/soc/intel/common/block/include/intelblocks/cse.h b/src/soc/intel/common/block/include/intelblocks/cse.h index 076f29465c..f162d485fd 100644 --- a/src/soc/intel/common/block/include/intelblocks/cse.h +++ b/src/soc/intel/common/block/include/intelblocks/cse.h @@ -153,6 +153,12 @@ void heci_disable(void); uint32_t me_read_config32(int offset); /* + * Check if the CSE device as per function argument `devfn` is enabled in device tree + * and also visible on the PCI bus. + */ +bool is_cse_devfn_visible(unsigned int devfn); + +/* * Check if the CSE device is enabled in device tree. Also check if the device * is visible on the PCI bus by reading config space. * Return true if device present and config space enabled, else return false. |