forked from Minki/linux
535d8d27c0
The only usage we have for it is for the regs pointer. Save a pointer to the set and ack registers instead of the register offsets to remove this requirement v2: Keep passing uncore down to the lowest levels to avoid repeated pointer chasing in the innermost loops: add/remove: 0/0 grow/shrink: 3/15 up/down: 33/-155 (-122) Function old new delta fw_domain_init 320 351 +31 hdmi_port_clock_valid 319 320 +1 g4x_pre_enable_dp 364 365 +1 ring_request_alloc 1852 1851 -1 intel_engine_lookup_user 50 49 -1 gen11_irq_handler 738 737 -1 __intel_uncore_forcewake_get 115 112 -3 intel_uncore_fw_release_timer 198 194 -4 i915_forcewake_domains 154 150 -4 fw_domain_fini 172 168 -4 __intel_uncore_forcewake_put 163 159 -4 ___force_wake_auto 138 134 -4 fw_domains_put 98 92 -6 __err_print_to_sgl 4058 4052 -6 intel_uncore_forcewake_reset 459 444 -15 fw_domains_get 563 548 -15 fw_domain_wait_ack_with_fallback 490 450 -40 fw_domains_get_with_fallback 875 828 -47 Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20190313231319.711-2-daniele.ceraolospurio@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20190316100045.20240-1-chris@chris-wilson.co.uk
1947 lines
57 KiB
C
1947 lines
57 KiB
C
/*
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* Copyright © 2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "i915_drv.h"
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#include "intel_drv.h"
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#include "i915_vgpu.h"
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#include <asm/iosf_mbi.h>
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#include <linux/pm_runtime.h>
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#define FORCEWAKE_ACK_TIMEOUT_MS 50
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#define GT_FIFO_TIMEOUT_MS 10
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#define __raw_posting_read(dev_priv__, reg__) (void)__raw_i915_read32((dev_priv__), (reg__))
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static const char * const forcewake_domain_names[] = {
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"render",
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"blitter",
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"media",
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"vdbox0",
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"vdbox1",
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"vdbox2",
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"vdbox3",
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"vebox0",
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"vebox1",
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};
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const char *
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intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id)
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{
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BUILD_BUG_ON(ARRAY_SIZE(forcewake_domain_names) != FW_DOMAIN_ID_COUNT);
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if (id >= 0 && id < FW_DOMAIN_ID_COUNT)
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return forcewake_domain_names[id];
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WARN_ON(id);
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return "unknown";
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}
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#define fw_ack(d) readl((d)->reg_ack)
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#define fw_set(d, val) writel((val), (d)->reg_set)
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static inline void
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fw_domain_reset(const struct intel_uncore *uncore,
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const struct intel_uncore_forcewake_domain *d)
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{
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/*
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* We don't really know if the powerwell for the forcewake domain we are
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* trying to reset here does exist at this point (engines could be fused
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* off in ICL+), so no waiting for acks
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*/
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fw_set(d, uncore->fw_reset);
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}
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static inline void
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fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d)
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{
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d->wake_count++;
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hrtimer_start_range_ns(&d->timer,
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NSEC_PER_MSEC,
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NSEC_PER_MSEC,
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HRTIMER_MODE_REL);
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}
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static inline int
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__wait_for_ack(const struct intel_uncore_forcewake_domain *d,
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const u32 ack,
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const u32 value)
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{
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return wait_for_atomic((fw_ack(d) & ack) == value,
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FORCEWAKE_ACK_TIMEOUT_MS);
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}
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static inline int
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wait_ack_clear(const struct intel_uncore_forcewake_domain *d,
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const u32 ack)
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{
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return __wait_for_ack(d, ack, 0);
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}
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static inline int
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wait_ack_set(const struct intel_uncore_forcewake_domain *d,
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const u32 ack)
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{
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return __wait_for_ack(d, ack, ack);
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}
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static inline void
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fw_domain_wait_ack_clear(const struct intel_uncore_forcewake_domain *d)
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{
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if (wait_ack_clear(d, FORCEWAKE_KERNEL))
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DRM_ERROR("%s: timed out waiting for forcewake ack to clear.\n",
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intel_uncore_forcewake_domain_to_str(d->id));
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}
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enum ack_type {
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ACK_CLEAR = 0,
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ACK_SET
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};
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static int
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fw_domain_wait_ack_with_fallback(const struct intel_uncore_forcewake_domain *d,
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const enum ack_type type)
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{
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const u32 ack_bit = FORCEWAKE_KERNEL;
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const u32 value = type == ACK_SET ? ack_bit : 0;
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unsigned int pass;
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bool ack_detected;
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/*
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* There is a possibility of driver's wake request colliding
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* with hardware's own wake requests and that can cause
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* hardware to not deliver the driver's ack message.
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*
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* Use a fallback bit toggle to kick the gpu state machine
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* in the hope that the original ack will be delivered along with
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* the fallback ack.
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*
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* This workaround is described in HSDES #1604254524 and it's known as:
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* WaRsForcewakeAddDelayForAck:skl,bxt,kbl,glk,cfl,cnl,icl
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* although the name is a bit misleading.
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*/
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pass = 1;
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do {
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wait_ack_clear(d, FORCEWAKE_KERNEL_FALLBACK);
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fw_set(d, _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL_FALLBACK));
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/* Give gt some time to relax before the polling frenzy */
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udelay(10 * pass);
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wait_ack_set(d, FORCEWAKE_KERNEL_FALLBACK);
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ack_detected = (fw_ack(d) & ack_bit) == value;
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fw_set(d, _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL_FALLBACK));
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} while (!ack_detected && pass++ < 10);
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DRM_DEBUG_DRIVER("%s had to use fallback to %s ack, 0x%x (passes %u)\n",
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intel_uncore_forcewake_domain_to_str(d->id),
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type == ACK_SET ? "set" : "clear",
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fw_ack(d),
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pass);
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return ack_detected ? 0 : -ETIMEDOUT;
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}
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static inline void
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fw_domain_wait_ack_clear_fallback(const struct intel_uncore_forcewake_domain *d)
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{
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if (likely(!wait_ack_clear(d, FORCEWAKE_KERNEL)))
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return;
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if (fw_domain_wait_ack_with_fallback(d, ACK_CLEAR))
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fw_domain_wait_ack_clear(d);
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}
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static inline void
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fw_domain_get(const struct intel_uncore *uncore,
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const struct intel_uncore_forcewake_domain *d)
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{
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fw_set(d, uncore->fw_set);
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}
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static inline void
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fw_domain_wait_ack_set(const struct intel_uncore_forcewake_domain *d)
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{
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if (wait_ack_set(d, FORCEWAKE_KERNEL))
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DRM_ERROR("%s: timed out waiting for forcewake ack request.\n",
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intel_uncore_forcewake_domain_to_str(d->id));
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}
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static inline void
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fw_domain_wait_ack_set_fallback(const struct intel_uncore_forcewake_domain *d)
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{
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if (likely(!wait_ack_set(d, FORCEWAKE_KERNEL)))
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return;
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if (fw_domain_wait_ack_with_fallback(d, ACK_SET))
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fw_domain_wait_ack_set(d);
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}
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static inline void
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fw_domain_put(const struct intel_uncore *uncore,
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const struct intel_uncore_forcewake_domain *d)
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{
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fw_set(d, uncore->fw_clear);
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}
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static void
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fw_domains_get(struct drm_i915_private *i915, enum forcewake_domains fw_domains)
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{
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struct intel_uncore *uncore = &i915->uncore;
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struct intel_uncore_forcewake_domain *d;
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unsigned int tmp;
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GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
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for_each_fw_domain_masked(d, fw_domains, i915, tmp) {
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fw_domain_wait_ack_clear(d);
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fw_domain_get(uncore, d);
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}
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for_each_fw_domain_masked(d, fw_domains, i915, tmp)
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fw_domain_wait_ack_set(d);
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uncore->fw_domains_active |= fw_domains;
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}
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static void
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fw_domains_get_with_fallback(struct drm_i915_private *i915,
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enum forcewake_domains fw_domains)
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{
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struct intel_uncore *uncore = &i915->uncore;
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struct intel_uncore_forcewake_domain *d;
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unsigned int tmp;
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GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
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for_each_fw_domain_masked(d, fw_domains, i915, tmp) {
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fw_domain_wait_ack_clear_fallback(d);
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fw_domain_get(uncore, d);
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}
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for_each_fw_domain_masked(d, fw_domains, i915, tmp)
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fw_domain_wait_ack_set_fallback(d);
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uncore->fw_domains_active |= fw_domains;
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}
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static void
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fw_domains_put(struct drm_i915_private *i915, enum forcewake_domains fw_domains)
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{
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struct intel_uncore *uncore = &i915->uncore;
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struct intel_uncore_forcewake_domain *d;
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unsigned int tmp;
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GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
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for_each_fw_domain_masked(d, fw_domains, i915, tmp)
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fw_domain_put(uncore, d);
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uncore->fw_domains_active &= ~fw_domains;
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}
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static void
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fw_domains_reset(struct drm_i915_private *i915,
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enum forcewake_domains fw_domains)
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{
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struct intel_uncore *uncore = &i915->uncore;
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struct intel_uncore_forcewake_domain *d;
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unsigned int tmp;
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if (!fw_domains)
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return;
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GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
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for_each_fw_domain_masked(d, fw_domains, i915, tmp)
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fw_domain_reset(uncore, d);
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}
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static inline u32 gt_thread_status(struct drm_i915_private *dev_priv)
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{
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u32 val;
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val = __raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG);
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val &= GEN6_GT_THREAD_STATUS_CORE_MASK;
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return val;
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}
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static void __gen6_gt_wait_for_thread_c0(struct drm_i915_private *dev_priv)
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{
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/*
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* w/a for a sporadic read returning 0 by waiting for the GT
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* thread to wake up.
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*/
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WARN_ONCE(wait_for_atomic_us(gt_thread_status(dev_priv) == 0, 5000),
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"GT thread status wait timed out\n");
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}
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static void fw_domains_get_with_thread_status(struct drm_i915_private *dev_priv,
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enum forcewake_domains fw_domains)
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{
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fw_domains_get(dev_priv, fw_domains);
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/* WaRsForcewakeWaitTC0:snb,ivb,hsw,bdw,vlv */
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__gen6_gt_wait_for_thread_c0(dev_priv);
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}
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static inline u32 fifo_free_entries(struct drm_i915_private *dev_priv)
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{
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u32 count = __raw_i915_read32(dev_priv, GTFIFOCTL);
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return count & GT_FIFO_FREE_ENTRIES_MASK;
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}
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static void __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv)
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{
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u32 n;
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/* On VLV, FIFO will be shared by both SW and HW.
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* So, we need to read the FREE_ENTRIES everytime */
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if (IS_VALLEYVIEW(dev_priv))
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n = fifo_free_entries(dev_priv);
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else
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n = dev_priv->uncore.fifo_count;
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if (n <= GT_FIFO_NUM_RESERVED_ENTRIES) {
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if (wait_for_atomic((n = fifo_free_entries(dev_priv)) >
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GT_FIFO_NUM_RESERVED_ENTRIES,
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GT_FIFO_TIMEOUT_MS)) {
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DRM_DEBUG("GT_FIFO timeout, entries: %u\n", n);
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return;
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}
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}
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dev_priv->uncore.fifo_count = n - 1;
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}
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static enum hrtimer_restart
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intel_uncore_fw_release_timer(struct hrtimer *timer)
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{
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struct intel_uncore_forcewake_domain *domain =
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container_of(timer, struct intel_uncore_forcewake_domain, timer);
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struct drm_i915_private *dev_priv =
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container_of(domain, struct drm_i915_private, uncore.fw_domain[domain->id]);
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unsigned long irqflags;
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assert_rpm_device_not_suspended(dev_priv);
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if (xchg(&domain->active, false))
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return HRTIMER_RESTART;
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spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
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if (WARN_ON(domain->wake_count == 0))
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domain->wake_count++;
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if (--domain->wake_count == 0)
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dev_priv->uncore.funcs.force_wake_put(dev_priv, domain->mask);
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spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
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return HRTIMER_NORESTART;
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}
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/* Note callers must have acquired the PUNIT->PMIC bus, before calling this. */
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static unsigned int
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intel_uncore_forcewake_reset(struct drm_i915_private *dev_priv)
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{
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unsigned long irqflags;
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struct intel_uncore_forcewake_domain *domain;
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int retry_count = 100;
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enum forcewake_domains fw, active_domains;
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iosf_mbi_assert_punit_acquired();
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/* Hold uncore.lock across reset to prevent any register access
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* with forcewake not set correctly. Wait until all pending
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* timers are run before holding.
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*/
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while (1) {
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unsigned int tmp;
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active_domains = 0;
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for_each_fw_domain(domain, dev_priv, tmp) {
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smp_store_mb(domain->active, false);
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if (hrtimer_cancel(&domain->timer) == 0)
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continue;
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intel_uncore_fw_release_timer(&domain->timer);
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}
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spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
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for_each_fw_domain(domain, dev_priv, tmp) {
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if (hrtimer_active(&domain->timer))
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active_domains |= domain->mask;
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}
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if (active_domains == 0)
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break;
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if (--retry_count == 0) {
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DRM_ERROR("Timed out waiting for forcewake timers to finish\n");
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break;
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}
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spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
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cond_resched();
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}
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WARN_ON(active_domains);
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fw = dev_priv->uncore.fw_domains_active;
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if (fw)
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dev_priv->uncore.funcs.force_wake_put(dev_priv, fw);
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fw_domains_reset(dev_priv, dev_priv->uncore.fw_domains);
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assert_forcewakes_inactive(dev_priv);
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spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
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return fw; /* track the lost user forcewake domains */
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}
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static u64 gen9_edram_size(struct drm_i915_private *dev_priv)
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{
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const unsigned int ways[8] = { 4, 8, 12, 16, 16, 16, 16, 16 };
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const unsigned int sets[4] = { 1, 1, 2, 2 };
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const u32 cap = dev_priv->edram_cap;
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return EDRAM_NUM_BANKS(cap) *
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ways[EDRAM_WAYS_IDX(cap)] *
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sets[EDRAM_SETS_IDX(cap)] *
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1024 * 1024;
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}
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u64 intel_uncore_edram_size(struct drm_i915_private *dev_priv)
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{
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if (!HAS_EDRAM(dev_priv))
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return 0;
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/* The needed capability bits for size calculation
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* are not there with pre gen9 so return 128MB always.
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*/
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if (INTEL_GEN(dev_priv) < 9)
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return 128 * 1024 * 1024;
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return gen9_edram_size(dev_priv);
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}
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static void intel_uncore_edram_detect(struct drm_i915_private *dev_priv)
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{
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if (IS_HASWELL(dev_priv) ||
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IS_BROADWELL(dev_priv) ||
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INTEL_GEN(dev_priv) >= 9) {
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dev_priv->edram_cap = __raw_i915_read32(dev_priv,
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HSW_EDRAM_CAP);
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/* NB: We can't write IDICR yet because we do not have gt funcs
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* set up */
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} else {
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dev_priv->edram_cap = 0;
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}
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if (HAS_EDRAM(dev_priv))
|
|
DRM_INFO("Found %lluMB of eDRAM\n",
|
|
intel_uncore_edram_size(dev_priv) / (1024 * 1024));
|
|
}
|
|
|
|
static bool
|
|
fpga_check_for_unclaimed_mmio(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 dbg;
|
|
|
|
dbg = __raw_i915_read32(dev_priv, FPGA_DBG);
|
|
if (likely(!(dbg & FPGA_DBG_RM_NOCLAIM)))
|
|
return false;
|
|
|
|
__raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
vlv_check_for_unclaimed_mmio(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 cer;
|
|
|
|
cer = __raw_i915_read32(dev_priv, CLAIM_ER);
|
|
if (likely(!(cer & (CLAIM_ER_OVERFLOW | CLAIM_ER_CTR_MASK))))
|
|
return false;
|
|
|
|
__raw_i915_write32(dev_priv, CLAIM_ER, CLAIM_ER_CLR);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
gen6_check_for_fifo_debug(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 fifodbg;
|
|
|
|
fifodbg = __raw_i915_read32(dev_priv, GTFIFODBG);
|
|
|
|
if (unlikely(fifodbg)) {
|
|
DRM_DEBUG_DRIVER("GTFIFODBG = 0x08%x\n", fifodbg);
|
|
__raw_i915_write32(dev_priv, GTFIFODBG, fifodbg);
|
|
}
|
|
|
|
return fifodbg;
|
|
}
|
|
|
|
static bool
|
|
check_for_unclaimed_mmio(struct drm_i915_private *dev_priv)
|
|
{
|
|
bool ret = false;
|
|
|
|
if (HAS_FPGA_DBG_UNCLAIMED(dev_priv))
|
|
ret |= fpga_check_for_unclaimed_mmio(dev_priv);
|
|
|
|
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
|
|
ret |= vlv_check_for_unclaimed_mmio(dev_priv);
|
|
|
|
if (IS_GEN_RANGE(dev_priv, 6, 7))
|
|
ret |= gen6_check_for_fifo_debug(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __intel_uncore_early_sanitize(struct drm_i915_private *dev_priv,
|
|
unsigned int restore_forcewake)
|
|
{
|
|
/* clear out unclaimed reg detection bit */
|
|
if (check_for_unclaimed_mmio(dev_priv))
|
|
DRM_DEBUG("unclaimed mmio detected on uncore init, clearing\n");
|
|
|
|
/* WaDisableShadowRegForCpd:chv */
|
|
if (IS_CHERRYVIEW(dev_priv)) {
|
|
__raw_i915_write32(dev_priv, GTFIFOCTL,
|
|
__raw_i915_read32(dev_priv, GTFIFOCTL) |
|
|
GT_FIFO_CTL_BLOCK_ALL_POLICY_STALL |
|
|
GT_FIFO_CTL_RC6_POLICY_STALL);
|
|
}
|
|
|
|
iosf_mbi_punit_acquire();
|
|
intel_uncore_forcewake_reset(dev_priv);
|
|
if (restore_forcewake) {
|
|
spin_lock_irq(&dev_priv->uncore.lock);
|
|
dev_priv->uncore.funcs.force_wake_get(dev_priv,
|
|
restore_forcewake);
|
|
|
|
if (IS_GEN_RANGE(dev_priv, 6, 7))
|
|
dev_priv->uncore.fifo_count =
|
|
fifo_free_entries(dev_priv);
|
|
spin_unlock_irq(&dev_priv->uncore.lock);
|
|
}
|
|
iosf_mbi_punit_release();
|
|
}
|
|
|
|
void intel_uncore_suspend(struct drm_i915_private *dev_priv)
|
|
{
|
|
iosf_mbi_punit_acquire();
|
|
iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
|
|
&dev_priv->uncore.pmic_bus_access_nb);
|
|
dev_priv->uncore.fw_domains_saved =
|
|
intel_uncore_forcewake_reset(dev_priv);
|
|
iosf_mbi_punit_release();
|
|
}
|
|
|
|
void intel_uncore_resume_early(struct drm_i915_private *dev_priv)
|
|
{
|
|
unsigned int restore_forcewake;
|
|
|
|
restore_forcewake = fetch_and_zero(&dev_priv->uncore.fw_domains_saved);
|
|
__intel_uncore_early_sanitize(dev_priv, restore_forcewake);
|
|
|
|
iosf_mbi_register_pmic_bus_access_notifier(
|
|
&dev_priv->uncore.pmic_bus_access_nb);
|
|
i915_check_and_clear_faults(dev_priv);
|
|
}
|
|
|
|
void intel_uncore_runtime_resume(struct drm_i915_private *dev_priv)
|
|
{
|
|
iosf_mbi_register_pmic_bus_access_notifier(
|
|
&dev_priv->uncore.pmic_bus_access_nb);
|
|
}
|
|
|
|
void intel_uncore_sanitize(struct drm_i915_private *dev_priv)
|
|
{
|
|
/* BIOS often leaves RC6 enabled, but disable it for hw init */
|
|
intel_sanitize_gt_powersave(dev_priv);
|
|
}
|
|
|
|
static void __intel_uncore_forcewake_get(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
fw_domains &= dev_priv->uncore.fw_domains;
|
|
|
|
for_each_fw_domain_masked(domain, fw_domains, dev_priv, tmp) {
|
|
if (domain->wake_count++) {
|
|
fw_domains &= ~domain->mask;
|
|
domain->active = true;
|
|
}
|
|
}
|
|
|
|
if (fw_domains)
|
|
dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_get - grab forcewake domain references
|
|
* @dev_priv: i915 device instance
|
|
* @fw_domains: forcewake domains to get reference on
|
|
*
|
|
* This function can be used get GT's forcewake domain references.
|
|
* Normal register access will handle the forcewake domains automatically.
|
|
* However if some sequence requires the GT to not power down a particular
|
|
* forcewake domains this function should be called at the beginning of the
|
|
* sequence. And subsequently the reference should be dropped by symmetric
|
|
* call to intel_unforce_forcewake_put(). Usually caller wants all the domains
|
|
* to be kept awake so the @fw_domains would be then FORCEWAKE_ALL.
|
|
*/
|
|
void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
unsigned long irqflags;
|
|
|
|
if (!dev_priv->uncore.funcs.force_wake_get)
|
|
return;
|
|
|
|
assert_rpm_wakelock_held(dev_priv);
|
|
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
|
|
__intel_uncore_forcewake_get(dev_priv, fw_domains);
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_user_get - claim forcewake on behalf of userspace
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* This function is a wrapper around intel_uncore_forcewake_get() to acquire
|
|
* the GT powerwell and in the process disable our debugging for the
|
|
* duration of userspace's bypass.
|
|
*/
|
|
void intel_uncore_forcewake_user_get(struct drm_i915_private *dev_priv)
|
|
{
|
|
spin_lock_irq(&dev_priv->uncore.lock);
|
|
if (!dev_priv->uncore.user_forcewake.count++) {
|
|
intel_uncore_forcewake_get__locked(dev_priv, FORCEWAKE_ALL);
|
|
|
|
/* Save and disable mmio debugging for the user bypass */
|
|
dev_priv->uncore.user_forcewake.saved_mmio_check =
|
|
dev_priv->uncore.unclaimed_mmio_check;
|
|
dev_priv->uncore.user_forcewake.saved_mmio_debug =
|
|
i915_modparams.mmio_debug;
|
|
|
|
dev_priv->uncore.unclaimed_mmio_check = 0;
|
|
i915_modparams.mmio_debug = 0;
|
|
}
|
|
spin_unlock_irq(&dev_priv->uncore.lock);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_user_put - release forcewake on behalf of userspace
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* This function complements intel_uncore_forcewake_user_get() and releases
|
|
* the GT powerwell taken on behalf of the userspace bypass.
|
|
*/
|
|
void intel_uncore_forcewake_user_put(struct drm_i915_private *dev_priv)
|
|
{
|
|
spin_lock_irq(&dev_priv->uncore.lock);
|
|
if (!--dev_priv->uncore.user_forcewake.count) {
|
|
if (intel_uncore_unclaimed_mmio(dev_priv))
|
|
dev_info(dev_priv->drm.dev,
|
|
"Invalid mmio detected during user access\n");
|
|
|
|
dev_priv->uncore.unclaimed_mmio_check =
|
|
dev_priv->uncore.user_forcewake.saved_mmio_check;
|
|
i915_modparams.mmio_debug =
|
|
dev_priv->uncore.user_forcewake.saved_mmio_debug;
|
|
|
|
intel_uncore_forcewake_put__locked(dev_priv, FORCEWAKE_ALL);
|
|
}
|
|
spin_unlock_irq(&dev_priv->uncore.lock);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_get__locked - grab forcewake domain references
|
|
* @dev_priv: i915 device instance
|
|
* @fw_domains: forcewake domains to get reference on
|
|
*
|
|
* See intel_uncore_forcewake_get(). This variant places the onus
|
|
* on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
|
|
*/
|
|
void intel_uncore_forcewake_get__locked(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
lockdep_assert_held(&dev_priv->uncore.lock);
|
|
|
|
if (!dev_priv->uncore.funcs.force_wake_get)
|
|
return;
|
|
|
|
__intel_uncore_forcewake_get(dev_priv, fw_domains);
|
|
}
|
|
|
|
static void __intel_uncore_forcewake_put(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
fw_domains &= dev_priv->uncore.fw_domains;
|
|
|
|
for_each_fw_domain_masked(domain, fw_domains, dev_priv, tmp) {
|
|
if (WARN_ON(domain->wake_count == 0))
|
|
continue;
|
|
|
|
if (--domain->wake_count) {
|
|
domain->active = true;
|
|
continue;
|
|
}
|
|
|
|
fw_domain_arm_timer(domain);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_put - release a forcewake domain reference
|
|
* @dev_priv: i915 device instance
|
|
* @fw_domains: forcewake domains to put references
|
|
*
|
|
* This function drops the device-level forcewakes for specified
|
|
* domains obtained by intel_uncore_forcewake_get().
|
|
*/
|
|
void intel_uncore_forcewake_put(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
unsigned long irqflags;
|
|
|
|
if (!dev_priv->uncore.funcs.force_wake_put)
|
|
return;
|
|
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
|
|
__intel_uncore_forcewake_put(dev_priv, fw_domains);
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_put__locked - grab forcewake domain references
|
|
* @dev_priv: i915 device instance
|
|
* @fw_domains: forcewake domains to get reference on
|
|
*
|
|
* See intel_uncore_forcewake_put(). This variant places the onus
|
|
* on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
|
|
*/
|
|
void intel_uncore_forcewake_put__locked(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
lockdep_assert_held(&dev_priv->uncore.lock);
|
|
|
|
if (!dev_priv->uncore.funcs.force_wake_put)
|
|
return;
|
|
|
|
__intel_uncore_forcewake_put(dev_priv, fw_domains);
|
|
}
|
|
|
|
void assert_forcewakes_inactive(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (!dev_priv->uncore.funcs.force_wake_get)
|
|
return;
|
|
|
|
WARN(dev_priv->uncore.fw_domains_active,
|
|
"Expected all fw_domains to be inactive, but %08x are still on\n",
|
|
dev_priv->uncore.fw_domains_active);
|
|
}
|
|
|
|
void assert_forcewakes_active(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
if (!dev_priv->uncore.funcs.force_wake_get)
|
|
return;
|
|
|
|
assert_rpm_wakelock_held(dev_priv);
|
|
|
|
fw_domains &= dev_priv->uncore.fw_domains;
|
|
WARN(fw_domains & ~dev_priv->uncore.fw_domains_active,
|
|
"Expected %08x fw_domains to be active, but %08x are off\n",
|
|
fw_domains, fw_domains & ~dev_priv->uncore.fw_domains_active);
|
|
}
|
|
|
|
/* We give fast paths for the really cool registers */
|
|
#define NEEDS_FORCE_WAKE(reg) ((reg) < 0x40000)
|
|
|
|
#define GEN11_NEEDS_FORCE_WAKE(reg) \
|
|
((reg) < 0x40000 || ((reg) >= 0x1c0000 && (reg) < 0x1dc000))
|
|
|
|
#define __gen6_reg_read_fw_domains(offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd; \
|
|
if (NEEDS_FORCE_WAKE(offset)) \
|
|
__fwd = FORCEWAKE_RENDER; \
|
|
else \
|
|
__fwd = 0; \
|
|
__fwd; \
|
|
})
|
|
|
|
static int fw_range_cmp(u32 offset, const struct intel_forcewake_range *entry)
|
|
{
|
|
if (offset < entry->start)
|
|
return -1;
|
|
else if (offset > entry->end)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Copied and "macroized" from lib/bsearch.c */
|
|
#define BSEARCH(key, base, num, cmp) ({ \
|
|
unsigned int start__ = 0, end__ = (num); \
|
|
typeof(base) result__ = NULL; \
|
|
while (start__ < end__) { \
|
|
unsigned int mid__ = start__ + (end__ - start__) / 2; \
|
|
int ret__ = (cmp)((key), (base) + mid__); \
|
|
if (ret__ < 0) { \
|
|
end__ = mid__; \
|
|
} else if (ret__ > 0) { \
|
|
start__ = mid__ + 1; \
|
|
} else { \
|
|
result__ = (base) + mid__; \
|
|
break; \
|
|
} \
|
|
} \
|
|
result__; \
|
|
})
|
|
|
|
static enum forcewake_domains
|
|
find_fw_domain(struct drm_i915_private *dev_priv, u32 offset)
|
|
{
|
|
const struct intel_forcewake_range *entry;
|
|
|
|
entry = BSEARCH(offset,
|
|
dev_priv->uncore.fw_domains_table,
|
|
dev_priv->uncore.fw_domains_table_entries,
|
|
fw_range_cmp);
|
|
|
|
if (!entry)
|
|
return 0;
|
|
|
|
/*
|
|
* The list of FW domains depends on the SKU in gen11+ so we
|
|
* can't determine it statically. We use FORCEWAKE_ALL and
|
|
* translate it here to the list of available domains.
|
|
*/
|
|
if (entry->domains == FORCEWAKE_ALL)
|
|
return dev_priv->uncore.fw_domains;
|
|
|
|
WARN(entry->domains & ~dev_priv->uncore.fw_domains,
|
|
"Uninitialized forcewake domain(s) 0x%x accessed at 0x%x\n",
|
|
entry->domains & ~dev_priv->uncore.fw_domains, offset);
|
|
|
|
return entry->domains;
|
|
}
|
|
|
|
#define GEN_FW_RANGE(s, e, d) \
|
|
{ .start = (s), .end = (e), .domains = (d) }
|
|
|
|
#define HAS_FWTABLE(dev_priv) \
|
|
(INTEL_GEN(dev_priv) >= 9 || \
|
|
IS_CHERRYVIEW(dev_priv) || \
|
|
IS_VALLEYVIEW(dev_priv))
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __vlv_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x5000, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xb000, 0x11fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x2e000, 0x2ffff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
|
|
};
|
|
|
|
#define __fwtable_reg_read_fw_domains(offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
if (NEEDS_FORCE_WAKE((offset))) \
|
|
__fwd = find_fw_domain(dev_priv, offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
#define __gen11_fwtable_reg_read_fw_domains(offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
if (GEN11_NEEDS_FORCE_WAKE((offset))) \
|
|
__fwd = find_fw_domain(dev_priv, offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
/* *Must* be sorted by offset! See intel_shadow_table_check(). */
|
|
static const i915_reg_t gen8_shadowed_regs[] = {
|
|
RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
|
|
GEN6_RPNSWREQ, /* 0xA008 */
|
|
GEN6_RC_VIDEO_FREQ, /* 0xA00C */
|
|
RING_TAIL(GEN6_BSD_RING_BASE), /* 0x12000 (base) */
|
|
RING_TAIL(VEBOX_RING_BASE), /* 0x1a000 (base) */
|
|
RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
|
|
/* TODO: Other registers are not yet used */
|
|
};
|
|
|
|
static const i915_reg_t gen11_shadowed_regs[] = {
|
|
RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
|
|
GEN6_RPNSWREQ, /* 0xA008 */
|
|
GEN6_RC_VIDEO_FREQ, /* 0xA00C */
|
|
RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
|
|
RING_TAIL(GEN11_BSD_RING_BASE), /* 0x1C0000 (base) */
|
|
RING_TAIL(GEN11_BSD2_RING_BASE), /* 0x1C4000 (base) */
|
|
RING_TAIL(GEN11_VEBOX_RING_BASE), /* 0x1C8000 (base) */
|
|
RING_TAIL(GEN11_BSD3_RING_BASE), /* 0x1D0000 (base) */
|
|
RING_TAIL(GEN11_BSD4_RING_BASE), /* 0x1D4000 (base) */
|
|
RING_TAIL(GEN11_VEBOX2_RING_BASE), /* 0x1D8000 (base) */
|
|
/* TODO: Other registers are not yet used */
|
|
};
|
|
|
|
static int mmio_reg_cmp(u32 key, const i915_reg_t *reg)
|
|
{
|
|
u32 offset = i915_mmio_reg_offset(*reg);
|
|
|
|
if (key < offset)
|
|
return -1;
|
|
else if (key > offset)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
#define __is_genX_shadowed(x) \
|
|
static bool is_gen##x##_shadowed(u32 offset) \
|
|
{ \
|
|
const i915_reg_t *regs = gen##x##_shadowed_regs; \
|
|
return BSEARCH(offset, regs, ARRAY_SIZE(gen##x##_shadowed_regs), \
|
|
mmio_reg_cmp); \
|
|
}
|
|
|
|
__is_genX_shadowed(8)
|
|
__is_genX_shadowed(11)
|
|
|
|
#define __gen8_reg_write_fw_domains(offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd; \
|
|
if (NEEDS_FORCE_WAKE(offset) && !is_gen8_shadowed(offset)) \
|
|
__fwd = FORCEWAKE_RENDER; \
|
|
else \
|
|
__fwd = 0; \
|
|
__fwd; \
|
|
})
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __chv_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x4000, 0x4fff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8000, 0x82ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8500, 0x85ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8800, 0x88ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x9000, 0xafff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0xe000, 0xe7ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xf000, 0xffff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x1a000, 0x1bfff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x1e800, 0x1e9ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x30000, 0x37fff, FORCEWAKE_MEDIA),
|
|
};
|
|
|
|
#define __fwtable_reg_write_fw_domains(offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
if (NEEDS_FORCE_WAKE((offset)) && !is_gen8_shadowed(offset)) \
|
|
__fwd = find_fw_domain(dev_priv, offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
#define __gen11_fwtable_reg_write_fw_domains(offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
if (GEN11_NEEDS_FORCE_WAKE((offset)) && !is_gen11_shadowed(offset)) \
|
|
__fwd = find_fw_domain(dev_priv, offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __gen9_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x0, 0xaff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0xb00, 0x1fff, 0), /* uncore range */
|
|
GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8000, 0x812f, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x8130, 0x813f, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x8800, 0x89ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8a00, 0x8bff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8d00, 0x93ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x9400, 0x97ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xb480, 0xcfff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0xd800, 0xdfff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0xe000, 0xe8ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xe900, 0x11fff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x14000, 0x19fff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x1a000, 0x1e9ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x1ea00, 0x243ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x24400, 0x247ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x24800, 0x2ffff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
|
|
};
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __gen11_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x0, 0xaff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0xb00, 0x1fff, 0), /* uncore range */
|
|
GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8500, 0x8bff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8d00, 0x93ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x9400, 0x97ff, FORCEWAKE_ALL),
|
|
GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xb480, 0xdfff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0xe000, 0xe8ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xe900, 0x243ff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x24400, 0x247ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x24800, 0x3ffff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x40000, 0x1bffff, 0),
|
|
GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0),
|
|
GEN_FW_RANGE(0x1c4000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX1),
|
|
GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0),
|
|
GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_BLITTER),
|
|
GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2),
|
|
GEN_FW_RANGE(0x1d4000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX3),
|
|
GEN_FW_RANGE(0x1d8000, 0x1dbfff, FORCEWAKE_MEDIA_VEBOX1)
|
|
};
|
|
|
|
static void
|
|
ilk_dummy_write(struct drm_i915_private *dev_priv)
|
|
{
|
|
/* WaIssueDummyWriteToWakeupFromRC6:ilk Issue a dummy write to wake up
|
|
* the chip from rc6 before touching it for real. MI_MODE is masked,
|
|
* hence harmless to write 0 into. */
|
|
__raw_i915_write32(dev_priv, MI_MODE, 0);
|
|
}
|
|
|
|
static void
|
|
__unclaimed_reg_debug(struct drm_i915_private *dev_priv,
|
|
const i915_reg_t reg,
|
|
const bool read,
|
|
const bool before)
|
|
{
|
|
if (WARN(check_for_unclaimed_mmio(dev_priv) && !before,
|
|
"Unclaimed %s register 0x%x\n",
|
|
read ? "read from" : "write to",
|
|
i915_mmio_reg_offset(reg)))
|
|
/* Only report the first N failures */
|
|
i915_modparams.mmio_debug--;
|
|
}
|
|
|
|
static inline void
|
|
unclaimed_reg_debug(struct drm_i915_private *dev_priv,
|
|
const i915_reg_t reg,
|
|
const bool read,
|
|
const bool before)
|
|
{
|
|
if (likely(!i915_modparams.mmio_debug))
|
|
return;
|
|
|
|
__unclaimed_reg_debug(dev_priv, reg, read, before);
|
|
}
|
|
|
|
#define GEN2_READ_HEADER(x) \
|
|
u##x val = 0; \
|
|
assert_rpm_wakelock_held(dev_priv);
|
|
|
|
#define GEN2_READ_FOOTER \
|
|
trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
|
|
return val
|
|
|
|
#define __gen2_read(x) \
|
|
static u##x \
|
|
gen2_read##x(struct drm_i915_private *dev_priv, i915_reg_t reg, bool trace) { \
|
|
GEN2_READ_HEADER(x); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
GEN2_READ_FOOTER; \
|
|
}
|
|
|
|
#define __gen5_read(x) \
|
|
static u##x \
|
|
gen5_read##x(struct drm_i915_private *dev_priv, i915_reg_t reg, bool trace) { \
|
|
GEN2_READ_HEADER(x); \
|
|
ilk_dummy_write(dev_priv); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
GEN2_READ_FOOTER; \
|
|
}
|
|
|
|
__gen5_read(8)
|
|
__gen5_read(16)
|
|
__gen5_read(32)
|
|
__gen5_read(64)
|
|
__gen2_read(8)
|
|
__gen2_read(16)
|
|
__gen2_read(32)
|
|
__gen2_read(64)
|
|
|
|
#undef __gen5_read
|
|
#undef __gen2_read
|
|
|
|
#undef GEN2_READ_FOOTER
|
|
#undef GEN2_READ_HEADER
|
|
|
|
#define GEN6_READ_HEADER(x) \
|
|
u32 offset = i915_mmio_reg_offset(reg); \
|
|
unsigned long irqflags; \
|
|
u##x val = 0; \
|
|
assert_rpm_wakelock_held(dev_priv); \
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); \
|
|
unclaimed_reg_debug(dev_priv, reg, true, true)
|
|
|
|
#define GEN6_READ_FOOTER \
|
|
unclaimed_reg_debug(dev_priv, reg, true, false); \
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \
|
|
trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
|
|
return val
|
|
|
|
static noinline void ___force_wake_auto(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
GEM_BUG_ON(fw_domains & ~dev_priv->uncore.fw_domains);
|
|
|
|
for_each_fw_domain_masked(domain, fw_domains, dev_priv, tmp)
|
|
fw_domain_arm_timer(domain);
|
|
|
|
dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains);
|
|
}
|
|
|
|
static inline void __force_wake_auto(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
if (WARN_ON(!fw_domains))
|
|
return;
|
|
|
|
/* Turn on all requested but inactive supported forcewake domains. */
|
|
fw_domains &= dev_priv->uncore.fw_domains;
|
|
fw_domains &= ~dev_priv->uncore.fw_domains_active;
|
|
|
|
if (fw_domains)
|
|
___force_wake_auto(dev_priv, fw_domains);
|
|
}
|
|
|
|
#define __gen_read(func, x) \
|
|
static u##x \
|
|
func##_read##x(struct drm_i915_private *dev_priv, i915_reg_t reg, bool trace) { \
|
|
enum forcewake_domains fw_engine; \
|
|
GEN6_READ_HEADER(x); \
|
|
fw_engine = __##func##_reg_read_fw_domains(offset); \
|
|
if (fw_engine) \
|
|
__force_wake_auto(dev_priv, fw_engine); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
GEN6_READ_FOOTER; \
|
|
}
|
|
#define __gen6_read(x) __gen_read(gen6, x)
|
|
#define __fwtable_read(x) __gen_read(fwtable, x)
|
|
#define __gen11_fwtable_read(x) __gen_read(gen11_fwtable, x)
|
|
|
|
__gen11_fwtable_read(8)
|
|
__gen11_fwtable_read(16)
|
|
__gen11_fwtable_read(32)
|
|
__gen11_fwtable_read(64)
|
|
__fwtable_read(8)
|
|
__fwtable_read(16)
|
|
__fwtable_read(32)
|
|
__fwtable_read(64)
|
|
__gen6_read(8)
|
|
__gen6_read(16)
|
|
__gen6_read(32)
|
|
__gen6_read(64)
|
|
|
|
#undef __gen11_fwtable_read
|
|
#undef __fwtable_read
|
|
#undef __gen6_read
|
|
#undef GEN6_READ_FOOTER
|
|
#undef GEN6_READ_HEADER
|
|
|
|
#define GEN2_WRITE_HEADER \
|
|
trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
|
|
assert_rpm_wakelock_held(dev_priv); \
|
|
|
|
#define GEN2_WRITE_FOOTER
|
|
|
|
#define __gen2_write(x) \
|
|
static void \
|
|
gen2_write##x(struct drm_i915_private *dev_priv, i915_reg_t reg, u##x val, bool trace) { \
|
|
GEN2_WRITE_HEADER; \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
GEN2_WRITE_FOOTER; \
|
|
}
|
|
|
|
#define __gen5_write(x) \
|
|
static void \
|
|
gen5_write##x(struct drm_i915_private *dev_priv, i915_reg_t reg, u##x val, bool trace) { \
|
|
GEN2_WRITE_HEADER; \
|
|
ilk_dummy_write(dev_priv); \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
GEN2_WRITE_FOOTER; \
|
|
}
|
|
|
|
__gen5_write(8)
|
|
__gen5_write(16)
|
|
__gen5_write(32)
|
|
__gen2_write(8)
|
|
__gen2_write(16)
|
|
__gen2_write(32)
|
|
|
|
#undef __gen5_write
|
|
#undef __gen2_write
|
|
|
|
#undef GEN2_WRITE_FOOTER
|
|
#undef GEN2_WRITE_HEADER
|
|
|
|
#define GEN6_WRITE_HEADER \
|
|
u32 offset = i915_mmio_reg_offset(reg); \
|
|
unsigned long irqflags; \
|
|
trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
|
|
assert_rpm_wakelock_held(dev_priv); \
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); \
|
|
unclaimed_reg_debug(dev_priv, reg, false, true)
|
|
|
|
#define GEN6_WRITE_FOOTER \
|
|
unclaimed_reg_debug(dev_priv, reg, false, false); \
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags)
|
|
|
|
#define __gen6_write(x) \
|
|
static void \
|
|
gen6_write##x(struct drm_i915_private *dev_priv, i915_reg_t reg, u##x val, bool trace) { \
|
|
GEN6_WRITE_HEADER; \
|
|
if (NEEDS_FORCE_WAKE(offset)) \
|
|
__gen6_gt_wait_for_fifo(dev_priv); \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
#define __gen_write(func, x) \
|
|
static void \
|
|
func##_write##x(struct drm_i915_private *dev_priv, i915_reg_t reg, u##x val, bool trace) { \
|
|
enum forcewake_domains fw_engine; \
|
|
GEN6_WRITE_HEADER; \
|
|
fw_engine = __##func##_reg_write_fw_domains(offset); \
|
|
if (fw_engine) \
|
|
__force_wake_auto(dev_priv, fw_engine); \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
#define __gen8_write(x) __gen_write(gen8, x)
|
|
#define __fwtable_write(x) __gen_write(fwtable, x)
|
|
#define __gen11_fwtable_write(x) __gen_write(gen11_fwtable, x)
|
|
|
|
__gen11_fwtable_write(8)
|
|
__gen11_fwtable_write(16)
|
|
__gen11_fwtable_write(32)
|
|
__fwtable_write(8)
|
|
__fwtable_write(16)
|
|
__fwtable_write(32)
|
|
__gen8_write(8)
|
|
__gen8_write(16)
|
|
__gen8_write(32)
|
|
__gen6_write(8)
|
|
__gen6_write(16)
|
|
__gen6_write(32)
|
|
|
|
#undef __gen11_fwtable_write
|
|
#undef __fwtable_write
|
|
#undef __gen8_write
|
|
#undef __gen6_write
|
|
#undef GEN6_WRITE_FOOTER
|
|
#undef GEN6_WRITE_HEADER
|
|
|
|
#define ASSIGN_WRITE_MMIO_VFUNCS(i915, x) \
|
|
do { \
|
|
(i915)->uncore.funcs.mmio_writeb = x##_write8; \
|
|
(i915)->uncore.funcs.mmio_writew = x##_write16; \
|
|
(i915)->uncore.funcs.mmio_writel = x##_write32; \
|
|
} while (0)
|
|
|
|
#define ASSIGN_READ_MMIO_VFUNCS(i915, x) \
|
|
do { \
|
|
(i915)->uncore.funcs.mmio_readb = x##_read8; \
|
|
(i915)->uncore.funcs.mmio_readw = x##_read16; \
|
|
(i915)->uncore.funcs.mmio_readl = x##_read32; \
|
|
(i915)->uncore.funcs.mmio_readq = x##_read64; \
|
|
} while (0)
|
|
|
|
|
|
static void fw_domain_init(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domain_id domain_id,
|
|
i915_reg_t reg_set,
|
|
i915_reg_t reg_ack)
|
|
{
|
|
struct intel_uncore *uncore = &dev_priv->uncore;
|
|
struct intel_uncore_forcewake_domain *d;
|
|
|
|
if (WARN_ON(domain_id >= FW_DOMAIN_ID_COUNT))
|
|
return;
|
|
|
|
d = &uncore->fw_domain[domain_id];
|
|
|
|
WARN_ON(d->wake_count);
|
|
|
|
WARN_ON(!i915_mmio_reg_valid(reg_set));
|
|
WARN_ON(!i915_mmio_reg_valid(reg_ack));
|
|
|
|
d->wake_count = 0;
|
|
d->reg_set = dev_priv->regs + i915_mmio_reg_offset(reg_set);
|
|
d->reg_ack = dev_priv->regs + i915_mmio_reg_offset(reg_ack);
|
|
|
|
d->id = domain_id;
|
|
|
|
BUILD_BUG_ON(FORCEWAKE_RENDER != (1 << FW_DOMAIN_ID_RENDER));
|
|
BUILD_BUG_ON(FORCEWAKE_BLITTER != (1 << FW_DOMAIN_ID_BLITTER));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA != (1 << FW_DOMAIN_ID_MEDIA));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX0));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX1));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX2));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX3));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX0));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX1));
|
|
|
|
|
|
d->mask = BIT(domain_id);
|
|
|
|
hrtimer_init(&d->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
|
|
d->timer.function = intel_uncore_fw_release_timer;
|
|
|
|
uncore->fw_domains |= BIT(domain_id);
|
|
|
|
fw_domain_reset(uncore, d);
|
|
}
|
|
|
|
static void fw_domain_fini(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domain_id domain_id)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
|
|
if (WARN_ON(domain_id >= FW_DOMAIN_ID_COUNT))
|
|
return;
|
|
|
|
d = &dev_priv->uncore.fw_domain[domain_id];
|
|
|
|
WARN_ON(d->wake_count);
|
|
WARN_ON(hrtimer_cancel(&d->timer));
|
|
memset(d, 0, sizeof(*d));
|
|
|
|
dev_priv->uncore.fw_domains &= ~BIT(domain_id);
|
|
}
|
|
|
|
static void intel_uncore_fw_domains_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (INTEL_GEN(dev_priv) <= 5 || intel_vgpu_active(dev_priv))
|
|
return;
|
|
|
|
if (IS_GEN(dev_priv, 6)) {
|
|
dev_priv->uncore.fw_reset = 0;
|
|
dev_priv->uncore.fw_set = FORCEWAKE_KERNEL;
|
|
dev_priv->uncore.fw_clear = 0;
|
|
} else {
|
|
/* WaRsClearFWBitsAtReset:bdw,skl */
|
|
dev_priv->uncore.fw_reset = _MASKED_BIT_DISABLE(0xffff);
|
|
dev_priv->uncore.fw_set = _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL);
|
|
dev_priv->uncore.fw_clear = _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL);
|
|
}
|
|
|
|
if (INTEL_GEN(dev_priv) >= 11) {
|
|
int i;
|
|
|
|
dev_priv->uncore.funcs.force_wake_get =
|
|
fw_domains_get_with_fallback;
|
|
dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_RENDER_GEN9,
|
|
FORCEWAKE_ACK_RENDER_GEN9);
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_BLITTER,
|
|
FORCEWAKE_BLITTER_GEN9,
|
|
FORCEWAKE_ACK_BLITTER_GEN9);
|
|
for (i = 0; i < I915_MAX_VCS; i++) {
|
|
if (!HAS_ENGINE(dev_priv, _VCS(i)))
|
|
continue;
|
|
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_MEDIA_VDBOX0 + i,
|
|
FORCEWAKE_MEDIA_VDBOX_GEN11(i),
|
|
FORCEWAKE_ACK_MEDIA_VDBOX_GEN11(i));
|
|
}
|
|
for (i = 0; i < I915_MAX_VECS; i++) {
|
|
if (!HAS_ENGINE(dev_priv, _VECS(i)))
|
|
continue;
|
|
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_MEDIA_VEBOX0 + i,
|
|
FORCEWAKE_MEDIA_VEBOX_GEN11(i),
|
|
FORCEWAKE_ACK_MEDIA_VEBOX_GEN11(i));
|
|
}
|
|
} else if (IS_GEN_RANGE(dev_priv, 9, 10)) {
|
|
dev_priv->uncore.funcs.force_wake_get =
|
|
fw_domains_get_with_fallback;
|
|
dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_RENDER_GEN9,
|
|
FORCEWAKE_ACK_RENDER_GEN9);
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_BLITTER,
|
|
FORCEWAKE_BLITTER_GEN9,
|
|
FORCEWAKE_ACK_BLITTER_GEN9);
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_MEDIA,
|
|
FORCEWAKE_MEDIA_GEN9, FORCEWAKE_ACK_MEDIA_GEN9);
|
|
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
|
|
dev_priv->uncore.funcs.force_wake_get = fw_domains_get;
|
|
dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_VLV, FORCEWAKE_ACK_VLV);
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_MEDIA,
|
|
FORCEWAKE_MEDIA_VLV, FORCEWAKE_ACK_MEDIA_VLV);
|
|
} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
|
|
dev_priv->uncore.funcs.force_wake_get =
|
|
fw_domains_get_with_thread_status;
|
|
dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_MT, FORCEWAKE_ACK_HSW);
|
|
} else if (IS_IVYBRIDGE(dev_priv)) {
|
|
u32 ecobus;
|
|
|
|
/* IVB configs may use multi-threaded forcewake */
|
|
|
|
/* A small trick here - if the bios hasn't configured
|
|
* MT forcewake, and if the device is in RC6, then
|
|
* force_wake_mt_get will not wake the device and the
|
|
* ECOBUS read will return zero. Which will be
|
|
* (correctly) interpreted by the test below as MT
|
|
* forcewake being disabled.
|
|
*/
|
|
dev_priv->uncore.funcs.force_wake_get =
|
|
fw_domains_get_with_thread_status;
|
|
dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
|
|
|
|
/* We need to init first for ECOBUS access and then
|
|
* determine later if we want to reinit, in case of MT access is
|
|
* not working. In this stage we don't know which flavour this
|
|
* ivb is, so it is better to reset also the gen6 fw registers
|
|
* before the ecobus check.
|
|
*/
|
|
|
|
__raw_i915_write32(dev_priv, FORCEWAKE, 0);
|
|
__raw_posting_read(dev_priv, ECOBUS);
|
|
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_MT, FORCEWAKE_MT_ACK);
|
|
|
|
spin_lock_irq(&dev_priv->uncore.lock);
|
|
fw_domains_get_with_thread_status(dev_priv, FORCEWAKE_RENDER);
|
|
ecobus = __raw_i915_read32(dev_priv, ECOBUS);
|
|
fw_domains_put(dev_priv, FORCEWAKE_RENDER);
|
|
spin_unlock_irq(&dev_priv->uncore.lock);
|
|
|
|
if (!(ecobus & FORCEWAKE_MT_ENABLE)) {
|
|
DRM_INFO("No MT forcewake available on Ivybridge, this can result in issues\n");
|
|
DRM_INFO("when using vblank-synced partial screen updates.\n");
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE, FORCEWAKE_ACK);
|
|
}
|
|
} else if (IS_GEN(dev_priv, 6)) {
|
|
dev_priv->uncore.funcs.force_wake_get =
|
|
fw_domains_get_with_thread_status;
|
|
dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE, FORCEWAKE_ACK);
|
|
}
|
|
|
|
/* All future platforms are expected to require complex power gating */
|
|
WARN_ON(dev_priv->uncore.fw_domains == 0);
|
|
}
|
|
|
|
#define ASSIGN_FW_DOMAINS_TABLE(d) \
|
|
{ \
|
|
dev_priv->uncore.fw_domains_table = \
|
|
(struct intel_forcewake_range *)(d); \
|
|
dev_priv->uncore.fw_domains_table_entries = ARRAY_SIZE((d)); \
|
|
}
|
|
|
|
static int i915_pmic_bus_access_notifier(struct notifier_block *nb,
|
|
unsigned long action, void *data)
|
|
{
|
|
struct drm_i915_private *dev_priv = container_of(nb,
|
|
struct drm_i915_private, uncore.pmic_bus_access_nb);
|
|
|
|
switch (action) {
|
|
case MBI_PMIC_BUS_ACCESS_BEGIN:
|
|
/*
|
|
* forcewake all now to make sure that we don't need to do a
|
|
* forcewake later which on systems where this notifier gets
|
|
* called requires the punit to access to the shared pmic i2c
|
|
* bus, which will be busy after this notification, leading to:
|
|
* "render: timed out waiting for forcewake ack request."
|
|
* errors.
|
|
*
|
|
* The notifier is unregistered during intel_runtime_suspend(),
|
|
* so it's ok to access the HW here without holding a RPM
|
|
* wake reference -> disable wakeref asserts for the time of
|
|
* the access.
|
|
*/
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
break;
|
|
case MBI_PMIC_BUS_ACCESS_END:
|
|
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
|
|
break;
|
|
}
|
|
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
void intel_uncore_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
i915_check_vgpu(dev_priv);
|
|
|
|
intel_uncore_edram_detect(dev_priv);
|
|
intel_uncore_fw_domains_init(dev_priv);
|
|
__intel_uncore_early_sanitize(dev_priv, 0);
|
|
|
|
dev_priv->uncore.unclaimed_mmio_check = 1;
|
|
dev_priv->uncore.pmic_bus_access_nb.notifier_call =
|
|
i915_pmic_bus_access_notifier;
|
|
|
|
if (IS_GEN_RANGE(dev_priv, 2, 4) || intel_vgpu_active(dev_priv)) {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, gen2);
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, gen2);
|
|
} else if (IS_GEN(dev_priv, 5)) {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, gen5);
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, gen5);
|
|
} else if (IS_GEN_RANGE(dev_priv, 6, 7)) {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, gen6);
|
|
|
|
if (IS_VALLEYVIEW(dev_priv)) {
|
|
ASSIGN_FW_DOMAINS_TABLE(__vlv_fw_ranges);
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, fwtable);
|
|
} else {
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, gen6);
|
|
}
|
|
} else if (IS_GEN(dev_priv, 8)) {
|
|
if (IS_CHERRYVIEW(dev_priv)) {
|
|
ASSIGN_FW_DOMAINS_TABLE(__chv_fw_ranges);
|
|
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, fwtable);
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, fwtable);
|
|
|
|
} else {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, gen8);
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, gen6);
|
|
}
|
|
} else if (IS_GEN_RANGE(dev_priv, 9, 10)) {
|
|
ASSIGN_FW_DOMAINS_TABLE(__gen9_fw_ranges);
|
|
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, fwtable);
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, fwtable);
|
|
} else {
|
|
ASSIGN_FW_DOMAINS_TABLE(__gen11_fw_ranges);
|
|
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, gen11_fwtable);
|
|
ASSIGN_READ_MMIO_VFUNCS(dev_priv, gen11_fwtable);
|
|
}
|
|
|
|
iosf_mbi_register_pmic_bus_access_notifier(
|
|
&dev_priv->uncore.pmic_bus_access_nb);
|
|
}
|
|
|
|
/*
|
|
* We might have detected that some engines are fused off after we initialized
|
|
* the forcewake domains. Prune them, to make sure they only reference existing
|
|
* engines.
|
|
*/
|
|
void intel_uncore_prune(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (INTEL_GEN(dev_priv) >= 11) {
|
|
enum forcewake_domains fw_domains = dev_priv->uncore.fw_domains;
|
|
enum forcewake_domain_id domain_id;
|
|
int i;
|
|
|
|
for (i = 0; i < I915_MAX_VCS; i++) {
|
|
domain_id = FW_DOMAIN_ID_MEDIA_VDBOX0 + i;
|
|
|
|
if (HAS_ENGINE(dev_priv, _VCS(i)))
|
|
continue;
|
|
|
|
if (fw_domains & BIT(domain_id))
|
|
fw_domain_fini(dev_priv, domain_id);
|
|
}
|
|
|
|
for (i = 0; i < I915_MAX_VECS; i++) {
|
|
domain_id = FW_DOMAIN_ID_MEDIA_VEBOX0 + i;
|
|
|
|
if (HAS_ENGINE(dev_priv, _VECS(i)))
|
|
continue;
|
|
|
|
if (fw_domains & BIT(domain_id))
|
|
fw_domain_fini(dev_priv, domain_id);
|
|
}
|
|
}
|
|
}
|
|
|
|
void intel_uncore_fini(struct drm_i915_private *dev_priv)
|
|
{
|
|
/* Paranoia: make sure we have disabled everything before we exit. */
|
|
intel_uncore_sanitize(dev_priv);
|
|
|
|
iosf_mbi_punit_acquire();
|
|
iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
|
|
&dev_priv->uncore.pmic_bus_access_nb);
|
|
intel_uncore_forcewake_reset(dev_priv);
|
|
iosf_mbi_punit_release();
|
|
}
|
|
|
|
static const struct reg_whitelist {
|
|
i915_reg_t offset_ldw;
|
|
i915_reg_t offset_udw;
|
|
u16 gen_mask;
|
|
u8 size;
|
|
} reg_read_whitelist[] = { {
|
|
.offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
|
|
.offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
|
|
.gen_mask = INTEL_GEN_MASK(4, 11),
|
|
.size = 8
|
|
} };
|
|
|
|
int i915_reg_read_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct drm_i915_reg_read *reg = data;
|
|
struct reg_whitelist const *entry;
|
|
intel_wakeref_t wakeref;
|
|
unsigned int flags;
|
|
int remain;
|
|
int ret = 0;
|
|
|
|
entry = reg_read_whitelist;
|
|
remain = ARRAY_SIZE(reg_read_whitelist);
|
|
while (remain) {
|
|
u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
|
|
|
|
GEM_BUG_ON(!is_power_of_2(entry->size));
|
|
GEM_BUG_ON(entry->size > 8);
|
|
GEM_BUG_ON(entry_offset & (entry->size - 1));
|
|
|
|
if (INTEL_INFO(dev_priv)->gen_mask & entry->gen_mask &&
|
|
entry_offset == (reg->offset & -entry->size))
|
|
break;
|
|
entry++;
|
|
remain--;
|
|
}
|
|
|
|
if (!remain)
|
|
return -EINVAL;
|
|
|
|
flags = reg->offset & (entry->size - 1);
|
|
|
|
with_intel_runtime_pm(dev_priv, wakeref) {
|
|
if (entry->size == 8 && flags == I915_REG_READ_8B_WA)
|
|
reg->val = I915_READ64_2x32(entry->offset_ldw,
|
|
entry->offset_udw);
|
|
else if (entry->size == 8 && flags == 0)
|
|
reg->val = I915_READ64(entry->offset_ldw);
|
|
else if (entry->size == 4 && flags == 0)
|
|
reg->val = I915_READ(entry->offset_ldw);
|
|
else if (entry->size == 2 && flags == 0)
|
|
reg->val = I915_READ16(entry->offset_ldw);
|
|
else if (entry->size == 1 && flags == 0)
|
|
reg->val = I915_READ8(entry->offset_ldw);
|
|
else
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* __intel_wait_for_register_fw - wait until register matches expected state
|
|
* @dev_priv: the i915 device
|
|
* @reg: the register to read
|
|
* @mask: mask to apply to register value
|
|
* @value: expected value
|
|
* @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
|
|
* @slow_timeout_ms: slow timeout in millisecond
|
|
* @out_value: optional placeholder to hold registry value
|
|
*
|
|
* This routine waits until the target register @reg contains the expected
|
|
* @value after applying the @mask, i.e. it waits until ::
|
|
*
|
|
* (I915_READ_FW(reg) & mask) == value
|
|
*
|
|
* Otherwise, the wait will timeout after @slow_timeout_ms milliseconds.
|
|
* For atomic context @slow_timeout_ms must be zero and @fast_timeout_us
|
|
* must be not larger than 20,0000 microseconds.
|
|
*
|
|
* Note that this routine assumes the caller holds forcewake asserted, it is
|
|
* not suitable for very long waits. See intel_wait_for_register() if you
|
|
* wish to wait without holding forcewake for the duration (i.e. you expect
|
|
* the wait to be slow).
|
|
*
|
|
* Returns 0 if the register matches the desired condition, or -ETIMEOUT.
|
|
*/
|
|
int __intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
|
|
i915_reg_t reg,
|
|
u32 mask,
|
|
u32 value,
|
|
unsigned int fast_timeout_us,
|
|
unsigned int slow_timeout_ms,
|
|
u32 *out_value)
|
|
{
|
|
u32 uninitialized_var(reg_value);
|
|
#define done (((reg_value = I915_READ_FW(reg)) & mask) == value)
|
|
int ret;
|
|
|
|
/* Catch any overuse of this function */
|
|
might_sleep_if(slow_timeout_ms);
|
|
GEM_BUG_ON(fast_timeout_us > 20000);
|
|
|
|
ret = -ETIMEDOUT;
|
|
if (fast_timeout_us && fast_timeout_us <= 20000)
|
|
ret = _wait_for_atomic(done, fast_timeout_us, 0);
|
|
if (ret && slow_timeout_ms)
|
|
ret = wait_for(done, slow_timeout_ms);
|
|
|
|
if (out_value)
|
|
*out_value = reg_value;
|
|
|
|
return ret;
|
|
#undef done
|
|
}
|
|
|
|
/**
|
|
* __intel_wait_for_register - wait until register matches expected state
|
|
* @dev_priv: the i915 device
|
|
* @reg: the register to read
|
|
* @mask: mask to apply to register value
|
|
* @value: expected value
|
|
* @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
|
|
* @slow_timeout_ms: slow timeout in millisecond
|
|
* @out_value: optional placeholder to hold registry value
|
|
*
|
|
* This routine waits until the target register @reg contains the expected
|
|
* @value after applying the @mask, i.e. it waits until ::
|
|
*
|
|
* (I915_READ(reg) & mask) == value
|
|
*
|
|
* Otherwise, the wait will timeout after @timeout_ms milliseconds.
|
|
*
|
|
* Returns 0 if the register matches the desired condition, or -ETIMEOUT.
|
|
*/
|
|
int __intel_wait_for_register(struct drm_i915_private *dev_priv,
|
|
i915_reg_t reg,
|
|
u32 mask,
|
|
u32 value,
|
|
unsigned int fast_timeout_us,
|
|
unsigned int slow_timeout_ms,
|
|
u32 *out_value)
|
|
{
|
|
unsigned fw =
|
|
intel_uncore_forcewake_for_reg(dev_priv, reg, FW_REG_READ);
|
|
u32 reg_value;
|
|
int ret;
|
|
|
|
might_sleep_if(slow_timeout_ms);
|
|
|
|
spin_lock_irq(&dev_priv->uncore.lock);
|
|
intel_uncore_forcewake_get__locked(dev_priv, fw);
|
|
|
|
ret = __intel_wait_for_register_fw(dev_priv,
|
|
reg, mask, value,
|
|
fast_timeout_us, 0, ®_value);
|
|
|
|
intel_uncore_forcewake_put__locked(dev_priv, fw);
|
|
spin_unlock_irq(&dev_priv->uncore.lock);
|
|
|
|
if (ret && slow_timeout_ms)
|
|
ret = __wait_for(reg_value = I915_READ_NOTRACE(reg),
|
|
(reg_value & mask) == value,
|
|
slow_timeout_ms * 1000, 10, 1000);
|
|
|
|
/* just trace the final value */
|
|
trace_i915_reg_rw(false, reg, reg_value, sizeof(reg_value), true);
|
|
|
|
if (out_value)
|
|
*out_value = reg_value;
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool intel_uncore_unclaimed_mmio(struct drm_i915_private *dev_priv)
|
|
{
|
|
return check_for_unclaimed_mmio(dev_priv);
|
|
}
|
|
|
|
bool
|
|
intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv)
|
|
{
|
|
bool ret = false;
|
|
|
|
spin_lock_irq(&dev_priv->uncore.lock);
|
|
|
|
if (unlikely(dev_priv->uncore.unclaimed_mmio_check <= 0))
|
|
goto out;
|
|
|
|
if (unlikely(intel_uncore_unclaimed_mmio(dev_priv))) {
|
|
if (!i915_modparams.mmio_debug) {
|
|
DRM_DEBUG("Unclaimed register detected, "
|
|
"enabling oneshot unclaimed register reporting. "
|
|
"Please use i915.mmio_debug=N for more information.\n");
|
|
i915_modparams.mmio_debug++;
|
|
}
|
|
dev_priv->uncore.unclaimed_mmio_check--;
|
|
ret = true;
|
|
}
|
|
|
|
out:
|
|
spin_unlock_irq(&dev_priv->uncore.lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum forcewake_domains
|
|
intel_uncore_forcewake_for_read(struct drm_i915_private *dev_priv,
|
|
i915_reg_t reg)
|
|
{
|
|
u32 offset = i915_mmio_reg_offset(reg);
|
|
enum forcewake_domains fw_domains;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 11) {
|
|
fw_domains = __gen11_fwtable_reg_read_fw_domains(offset);
|
|
} else if (HAS_FWTABLE(dev_priv)) {
|
|
fw_domains = __fwtable_reg_read_fw_domains(offset);
|
|
} else if (INTEL_GEN(dev_priv) >= 6) {
|
|
fw_domains = __gen6_reg_read_fw_domains(offset);
|
|
} else {
|
|
WARN_ON(!IS_GEN_RANGE(dev_priv, 2, 5));
|
|
fw_domains = 0;
|
|
}
|
|
|
|
WARN_ON(fw_domains & ~dev_priv->uncore.fw_domains);
|
|
|
|
return fw_domains;
|
|
}
|
|
|
|
static enum forcewake_domains
|
|
intel_uncore_forcewake_for_write(struct drm_i915_private *dev_priv,
|
|
i915_reg_t reg)
|
|
{
|
|
u32 offset = i915_mmio_reg_offset(reg);
|
|
enum forcewake_domains fw_domains;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 11) {
|
|
fw_domains = __gen11_fwtable_reg_write_fw_domains(offset);
|
|
} else if (HAS_FWTABLE(dev_priv) && !IS_VALLEYVIEW(dev_priv)) {
|
|
fw_domains = __fwtable_reg_write_fw_domains(offset);
|
|
} else if (IS_GEN(dev_priv, 8)) {
|
|
fw_domains = __gen8_reg_write_fw_domains(offset);
|
|
} else if (IS_GEN_RANGE(dev_priv, 6, 7)) {
|
|
fw_domains = FORCEWAKE_RENDER;
|
|
} else {
|
|
WARN_ON(!IS_GEN_RANGE(dev_priv, 2, 5));
|
|
fw_domains = 0;
|
|
}
|
|
|
|
WARN_ON(fw_domains & ~dev_priv->uncore.fw_domains);
|
|
|
|
return fw_domains;
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_for_reg - which forcewake domains are needed to access
|
|
* a register
|
|
* @dev_priv: pointer to struct drm_i915_private
|
|
* @reg: register in question
|
|
* @op: operation bitmask of FW_REG_READ and/or FW_REG_WRITE
|
|
*
|
|
* Returns a set of forcewake domains required to be taken with for example
|
|
* intel_uncore_forcewake_get for the specified register to be accessible in the
|
|
* specified mode (read, write or read/write) with raw mmio accessors.
|
|
*
|
|
* NOTE: On Gen6 and Gen7 write forcewake domain (FORCEWAKE_RENDER) requires the
|
|
* callers to do FIFO management on their own or risk losing writes.
|
|
*/
|
|
enum forcewake_domains
|
|
intel_uncore_forcewake_for_reg(struct drm_i915_private *dev_priv,
|
|
i915_reg_t reg, unsigned int op)
|
|
{
|
|
enum forcewake_domains fw_domains = 0;
|
|
|
|
WARN_ON(!op);
|
|
|
|
if (intel_vgpu_active(dev_priv))
|
|
return 0;
|
|
|
|
if (op & FW_REG_READ)
|
|
fw_domains = intel_uncore_forcewake_for_read(dev_priv, reg);
|
|
|
|
if (op & FW_REG_WRITE)
|
|
fw_domains |= intel_uncore_forcewake_for_write(dev_priv, reg);
|
|
|
|
return fw_domains;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
|
|
#include "selftests/mock_uncore.c"
|
|
#include "selftests/intel_uncore.c"
|
|
#endif
|