drm/i915/intel_pcode.c

55 static int __snb_pcode_rw(struct intel_uncore *uncore, u32 mbox,
60 	lockdep_assert_held(&uncore->i915->sb_lock);
68 	if (intel_uncore_read_fw(uncore, GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
71 	intel_uncore_write_fw(uncore, GEN6_PCODE_DATA, *val);
72 	intel_uncore_write_fw(uncore, GEN6_PCODE_DATA1, val1 ? *val1 : 0);
73 	intel_uncore_write_fw(uncore,
76 	if (__intel_wait_for_register_fw(uncore,
85 		*val = intel_uncore_read_fw(uncore, GEN6_PCODE_DATA);
87 		*val1 = intel_uncore_read_fw(uncore, GEN6_PCODE_DATA1);
89 	if (GRAPHICS_VER(uncore->i915) > 6)
95 int snb_pcode_read(struct intel_uncore *uncore, u32 mbox, u32 *val, u32 *val1)
99 	mutex_lock(&uncore->i915->sb_lock);
100 	err = __snb_pcode_rw(uncore, mbox, val, val1, 500, 20, true);
101 	mutex_unlock(&uncore->i915->sb_lock);
104 		drm_dbg(&uncore->i915->drm,
112 int snb_pcode_write_timeout(struct intel_uncore *uncore, u32 mbox, u32 val,
117 	mutex_lock(&uncore->i915->sb_lock);
118 	err = __snb_pcode_rw(uncore, mbox, &val, NULL,
120 	mutex_unlock(&uncore->i915->sb_lock);
123 		drm_dbg(&uncore->i915->drm,
131 static bool skl_pcode_try_request(struct intel_uncore *uncore, u32 mbox,
135 	*status = __snb_pcode_rw(uncore, mbox, &request, NULL, 500, 0, true);
142  * @uncore: uncore
159 int skl_pcode_request(struct intel_uncore *uncore, u32 mbox, u32 request,
165 	mutex_lock(&uncore->i915->sb_lock);
168 	skl_pcode_try_request(uncore, mbox, request, reply_mask, reply, &status)
194 	drm_dbg_kms(&uncore->i915->drm,
196 	drm_WARN_ON_ONCE(&uncore->i915->drm, timeout_base_ms > 3);
202 	mutex_unlock(&uncore->i915->sb_lock);
207 static int pcode_init_wait(struct intel_uncore *uncore, int timeout_ms)
209 	if (__intel_wait_for_register_fw(uncore,
216 	return skl_pcode_request(uncore,
223 int intel_pcode_init(struct intel_uncore *uncore)
227 	if (!IS_DGFX(uncore->i915))
234 	err = pcode_init_wait(uncore, 10000);
237 		drm_notice(&uncore->i915->drm,
239 		err = pcode_init_wait(uncore, 180000);
245 int snb_pcode_read_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 *val)
255 	with_intel_runtime_pm(uncore->rpm, wakeref)
256 		err = snb_pcode_read(uncore, mbox, val, NULL);
261 int snb_pcode_write_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 val)
271 	with_intel_runtime_pm(uncore->rpm, wakeref)
272 		err = snb_pcode_write(uncore, mbox, val);