diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_pcode.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pcode.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/drivers/gpu/drm/xe/xe_pcode.c b/drivers/gpu/drm/xe/xe_pcode.c index dc66d0c7ee06..ccc3bdeed6bb 100644 --- a/drivers/gpu/drm/xe/xe_pcode.c +++ b/drivers/gpu/drm/xe/xe_pcode.c @@ -11,10 +11,14 @@ #include <drm/drm_managed.h> +#include "regs/xe_pmt.h" #include "xe_assert.h" #include "xe_device.h" #include "xe_mmio.h" #include "xe_pcode_api.h" +#include "xe_pm.h" +#include "xe_printk.h" +#include "xe_vsec.h" /** * DOC: PCODE @@ -323,15 +327,17 @@ int xe_pcode_ready(struct xe_device *xe, bool locked) } /** - * xe_pcode_init: initialize components of PCODE + * xe_pcode_init_early() - Initialize components of PCODE * @tile: tile instance * * This function initializes the xe_pcode component. * To be called once only during probe. + * + * Return: 0 on success or a negative error code on failure. */ -void xe_pcode_init(struct xe_tile *tile) +int xe_pcode_init_early(struct xe_tile *tile) { - drmm_mutex_init(&tile_to_xe(tile)->drm, &tile->pcode.lock); + return drmm_mutex_init(&tile_to_xe(tile)->drm, &tile->pcode.lock); } /** @@ -348,3 +354,31 @@ int xe_pcode_probe_early(struct xe_device *xe) return xe_pcode_ready(xe, false); } ALLOW_ERROR_INJECTION(xe_pcode_probe_early, ERRNO); /* See xe_pci_probe */ + +/** + * xe_get_pcode_version - Read pcode version via PMT telemetry + * @xe: xe instance + * @version: pointer to struct xe_pcode_version to store version info + * + * Reads the pcode version from PMT telemetry and fills the + * provided @version structure. + * + * Return: 0 on success, negative error code on failure. + */ +int xe_get_pcode_version(struct xe_device *xe, struct xe_pcode_version *version) +{ + int ret = 0; + + guard(xe_pm_runtime)(xe); + + ret = xe_pmt_telem_read(xe->drm.dev, + xe_mmio_read32(xe_root_tile_mmio(xe), PUNIT_TELEMETRY_GUID), + (u64 *)version, PUNIT_VERSION_OFFSET, sizeof(*version)); + if (ret != sizeof(*version)) { + xe_warn(xe, "pcode version read from PMT failed, ret %pe\n", ERR_PTR(ret)); + return ret; + } + xe_dbg(xe, "pcode version major %u minor %u engg %u\n", version->major, + version->minor, version->engg); + return 0; +} |