diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_pcode.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pcode.c | 85 |
1 files changed, 70 insertions, 15 deletions
diff --git a/drivers/gpu/drm/xe/xe_pcode.c b/drivers/gpu/drm/xe/xe_pcode.c index d95d9835de42..0d33c14ea0cf 100644 --- a/drivers/gpu/drm/xe/xe_pcode.c +++ b/drivers/gpu/drm/xe/xe_pcode.c @@ -7,6 +7,7 @@ #include <linux/delay.h> #include <linux/errno.h> +#include <linux/error-injection.h> #include <drm/drm_managed.h> @@ -31,27 +32,39 @@ static int pcode_mailbox_status(struct xe_tile *tile) { + const char *err_str; + int err_decode; u32 err; - static const struct pcode_err_decode err_decode[] = { - [PCODE_ILLEGAL_CMD] = {-ENXIO, "Illegal Command"}, - [PCODE_TIMEOUT] = {-ETIMEDOUT, "Timed out"}, - [PCODE_ILLEGAL_DATA] = {-EINVAL, "Illegal Data"}, - [PCODE_ILLEGAL_SUBCOMMAND] = {-ENXIO, "Illegal Subcommand"}, - [PCODE_LOCKED] = {-EBUSY, "PCODE Locked"}, - [PCODE_GT_RATIO_OUT_OF_RANGE] = {-EOVERFLOW, - "GT ratio out of range"}, - [PCODE_REJECTED] = {-EACCES, "PCODE Rejected"}, - [PCODE_ERROR_MASK] = {-EPROTO, "Unknown"}, - }; + +#define CASE_ERR(_err, _err_decode, _err_str) \ + case _err: \ + err_decode = _err_decode; \ + err_str = _err_str; \ + break err = xe_mmio_read32(&tile->mmio, PCODE_MAILBOX) & PCODE_ERROR_MASK; + switch (err) { + CASE_ERR(PCODE_ILLEGAL_CMD, -ENXIO, "Illegal Command"); + CASE_ERR(PCODE_TIMEOUT, -ETIMEDOUT, "Timed out"); + CASE_ERR(PCODE_ILLEGAL_DATA, -EINVAL, "Illegal Data"); + CASE_ERR(PCODE_ILLEGAL_SUBCOMMAND, -ENXIO, "Illegal Subcommand"); + CASE_ERR(PCODE_LOCKED, -EBUSY, "PCODE Locked"); + CASE_ERR(PCODE_GT_RATIO_OUT_OF_RANGE, -EOVERFLOW, "GT ratio out of range"); + CASE_ERR(PCODE_REJECTED, -EACCES, "PCODE Rejected"); + default: + err_decode = -EPROTO; + err_str = "Unknown"; + } + if (err) { - drm_err(&tile_to_xe(tile)->drm, "PCODE Mailbox failed: %d %s", err, - err_decode[err].str ?: "Unknown"); - return err_decode[err].errno ?: -EPROTO; + drm_err(&tile_to_xe(tile)->drm, "PCODE Mailbox failed: %d %s", + err_decode, err_str); + + return err_decode; } return 0; +#undef CASE_ERR } static int __pcode_mailbox_rw(struct xe_tile *tile, u32 mbox, u32 *data0, u32 *data1, @@ -108,6 +121,17 @@ int xe_pcode_write_timeout(struct xe_tile *tile, u32 mbox, u32 data, int timeout return err; } +int xe_pcode_write64_timeout(struct xe_tile *tile, u32 mbox, u32 data0, u32 data1, int timeout) +{ + int err; + + mutex_lock(&tile->pcode.lock); + err = pcode_mailbox_rw(tile, mbox, &data0, &data1, timeout, false, false); + mutex_unlock(&tile->pcode.lock); + + return err; +} + int xe_pcode_read(struct xe_tile *tile, u32 mbox, u32 *val, u32 *val1) { int err; @@ -217,7 +241,7 @@ out: * * It returns 0 on success, and -ERROR number on failure, -EINVAL if max * frequency is higher then the minimal, and other errors directly translated - * from the PCODE Error returs: + * from the PCODE Error returns: * - -ENXIO: "Illegal Command" * - -ETIMEDOUT: "Timed out" * - -EINVAL: "Illegal Data" @@ -323,3 +347,34 @@ 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 */ + +/* Helpers with drm device. These should only be called by the display side */ +#if IS_ENABLED(CONFIG_DRM_XE_DISPLAY) + +int intel_pcode_read(struct drm_device *drm, u32 mbox, u32 *val, u32 *val1) +{ + struct xe_device *xe = to_xe_device(drm); + struct xe_tile *tile = xe_device_get_root_tile(xe); + + return xe_pcode_read(tile, mbox, val, val1); +} + +int intel_pcode_write_timeout(struct drm_device *drm, u32 mbox, u32 val, int timeout_ms) +{ + struct xe_device *xe = to_xe_device(drm); + struct xe_tile *tile = xe_device_get_root_tile(xe); + + return xe_pcode_write_timeout(tile, mbox, val, timeout_ms); +} + +int intel_pcode_request(struct drm_device *drm, u32 mbox, u32 request, + u32 reply_mask, u32 reply, int timeout_base_ms) +{ + struct xe_device *xe = to_xe_device(drm); + struct xe_tile *tile = xe_device_get_root_tile(xe); + + return xe_pcode_request(tile, mbox, request, reply_mask, reply, timeout_base_ms); +} + +#endif |