1 // SPDX-License-Identifier: MIT
28  * - PCODE hw metrics
29  * - PCODE for display operations
36 		[PCODE_ILLEGAL_CMD] = {-ENXIO, "Illegal Command"},  in pcode_mailbox_status()
37 		[PCODE_TIMEOUT] = {-ETIMEDOUT, "Timed out"},  in pcode_mailbox_status()
38 		[PCODE_ILLEGAL_DATA] = {-EINVAL, "Illegal Data"},  in pcode_mailbox_status()
39 		[PCODE_ILLEGAL_SUBCOMMAND] = {-ENXIO, "Illegal Subcommand"},  in pcode_mailbox_status()
40 		[PCODE_LOCKED] = {-EBUSY, "PCODE Locked"},  in pcode_mailbox_status()
41 		[PCODE_GT_RATIO_OUT_OF_RANGE] = {-EOVERFLOW,  in pcode_mailbox_status()
43 		[PCODE_REJECTED] = {-EACCES, "PCODE Rejected"},  in pcode_mailbox_status()
44 		[PCODE_ERROR_MASK] = {-EPROTO, "Unknown"},  in pcode_mailbox_status()
47 	err = xe_mmio_read32(&tile->mmio, PCODE_MAILBOX) & PCODE_ERROR_MASK;  in pcode_mailbox_status()
49 		drm_err(&tile_to_xe(tile)->drm, "PCODE Mailbox failed: %d %s", err,  in pcode_mailbox_status()
51 		return err_decode[err].errno ?: -EPROTO;  in pcode_mailbox_status()
61 	struct xe_mmio *mmio = &tile->mmio;  in __pcode_mailbox_rw()
64 	if (tile_to_xe(tile)->info.skip_pcode)  in __pcode_mailbox_rw()
68 		return -EAGAIN;  in __pcode_mailbox_rw()
92 	if (tile_to_xe(tile)->info.skip_pcode)  in pcode_mailbox_rw()
95 	lockdep_assert_held(&tile->pcode.lock);  in pcode_mailbox_rw()
100 int xe_pcode_write_timeout(struct xe_tile *tile, u32 mbox, u32 data, int timeout)  in xe_pcode_write_timeout()  argument
104 	mutex_lock(&tile->pcode.lock);  in xe_pcode_write_timeout()
105 	err = pcode_mailbox_rw(tile, mbox, &data, NULL, timeout, false, false);  in xe_pcode_write_timeout()
106 	mutex_unlock(&tile->pcode.lock);  in xe_pcode_write_timeout()
115 	mutex_lock(&tile->pcode.lock);  in xe_pcode_read()
117 	mutex_unlock(&tile->pcode.lock);  in xe_pcode_read()
147 	return -ETIMEDOUT;  in pcode_try_request()
151  * xe_pcode_request - send PCODE request until acknowledgment
157  * @timeout_base_ms: timeout for polling with preemption enabled
160  * reports an error or an overall timeout of @timeout_base_ms+50 ms expires.
163  * for @timeout_base_ms and if this times out for another 50 ms with
166  * Returns 0 on success, %-ETIMEDOUT in case of a timeout, <0 in case of some
177 	mutex_lock(&tile->pcode.lock);  in xe_pcode_request()
189 	 * requests. Increase the timeout from @timeout_base_ms to 50ms to  in xe_pcode_request()
194 	drm_err(&tile_to_xe(tile)->drm,  in xe_pcode_request()
195 		"PCODE timeout, retrying with preemption disabled\n");  in xe_pcode_request()
202 	mutex_unlock(&tile->pcode.lock);  in xe_pcode_request()
206  * xe_pcode_init_min_freq_table - Initialize PCODE's QOS frequency table
215  * 1-1 Ring vs GT frequency. Even though, without setting it, PCODE might
218  * It returns 0 on success, and -ERROR number on failure, -EINVAL if max
221  * - -ENXIO: "Illegal Command"
222  * - -ETIMEDOUT: "Timed out"
223  * - -EINVAL: "Illegal Data"
224  * - -ENXIO, "Illegal Subcommand"
225  * - -EBUSY: "PCODE Locked"
226  * - -EOVERFLOW, "GT ratio out of range"
227  * - -EACCES, "PCODE Rejected"
228  * - -EPROTO, "Unknown"
236 	if (!tile_to_xe(tile)->info.has_llc)  in xe_pcode_init_min_freq_table()
240 		return -EINVAL;  in xe_pcode_init_min_freq_table()
242 	mutex_lock(&tile->pcode.lock);  in xe_pcode_init_min_freq_table()
253 	mutex_unlock(&tile->pcode.lock);  in xe_pcode_init_min_freq_table()
258  * xe_pcode_ready - Ensure PCODE is initialized
268  * Returns 0 on success, and -error number on failure.
277 	if (xe->info.skip_pcode)  in xe_pcode_ready()
284 		mutex_lock(&tile->pcode.lock);  in xe_pcode_ready()
292 		mutex_unlock(&tile->pcode.lock);  in xe_pcode_ready()
295 		drm_err(&xe->drm,  in xe_pcode_ready()
310 	drmm_mutex_init(&tile_to_xe(tile)->drm, &tile->pcode.lock);  in xe_pcode_init()