mirror of https://gitee.com/openkylin/linux.git
1416 lines
38 KiB
C
1416 lines
38 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 <linux/pm_runtime.h>
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#define FORCEWAKE_ACK_TIMEOUT_MS 2
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#define __raw_i915_read8(dev_priv__, reg__) readb((dev_priv__)->regs + (reg__))
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#define __raw_i915_write8(dev_priv__, reg__, val__) writeb(val__, (dev_priv__)->regs + (reg__))
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#define __raw_i915_read16(dev_priv__, reg__) readw((dev_priv__)->regs + (reg__))
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#define __raw_i915_write16(dev_priv__, reg__, val__) writew(val__, (dev_priv__)->regs + (reg__))
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#define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__))
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#define __raw_i915_write32(dev_priv__, reg__, val__) writel(val__, (dev_priv__)->regs + (reg__))
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#define __raw_i915_read64(dev_priv__, reg__) readq((dev_priv__)->regs + (reg__))
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#define __raw_i915_write64(dev_priv__, reg__, val__) writeq(val__, (dev_priv__)->regs + (reg__))
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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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};
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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((sizeof(forcewake_domain_names)/sizeof(const char *)) !=
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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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static void
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assert_device_not_suspended(struct drm_i915_private *dev_priv)
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{
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WARN_ONCE(HAS_RUNTIME_PM(dev_priv->dev) && dev_priv->pm.suspended,
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"Device suspended\n");
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}
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static inline void
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fw_domain_reset(const struct intel_uncore_forcewake_domain *d)
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{
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WARN_ON(d->reg_set == 0);
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__raw_i915_write32(d->i915, d->reg_set, d->val_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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mod_timer_pinned(&d->timer, jiffies + 1);
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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_for_atomic((__raw_i915_read32(d->i915, d->reg_ack) &
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FORCEWAKE_KERNEL) == 0,
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FORCEWAKE_ACK_TIMEOUT_MS))
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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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static inline void
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fw_domain_get(const struct intel_uncore_forcewake_domain *d)
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{
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__raw_i915_write32(d->i915, d->reg_set, d->val_set);
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}
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static inline void
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fw_domain_wait_ack(const struct intel_uncore_forcewake_domain *d)
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{
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if (wait_for_atomic((__raw_i915_read32(d->i915, d->reg_ack) &
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FORCEWAKE_KERNEL),
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FORCEWAKE_ACK_TIMEOUT_MS))
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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_put(const struct intel_uncore_forcewake_domain *d)
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{
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__raw_i915_write32(d->i915, d->reg_set, d->val_clear);
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}
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static inline void
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fw_domain_posting_read(const struct intel_uncore_forcewake_domain *d)
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{
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/* something from same cacheline, but not from the set register */
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if (d->reg_post)
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__raw_posting_read(d->i915, d->reg_post);
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}
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static void
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fw_domains_get(struct drm_i915_private *dev_priv, enum forcewake_domains fw_domains)
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{
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struct intel_uncore_forcewake_domain *d;
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enum forcewake_domain_id id;
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for_each_fw_domain_mask(d, fw_domains, dev_priv, id) {
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fw_domain_wait_ack_clear(d);
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fw_domain_get(d);
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fw_domain_wait_ack(d);
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}
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}
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static void
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fw_domains_put(struct drm_i915_private *dev_priv, enum forcewake_domains fw_domains)
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{
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struct intel_uncore_forcewake_domain *d;
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enum forcewake_domain_id id;
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for_each_fw_domain_mask(d, fw_domains, dev_priv, id) {
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fw_domain_put(d);
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fw_domain_posting_read(d);
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}
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}
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static void
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fw_domains_posting_read(struct drm_i915_private *dev_priv)
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{
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struct intel_uncore_forcewake_domain *d;
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enum forcewake_domain_id id;
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/* No need to do for all, just do for first found */
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for_each_fw_domain(d, dev_priv, id) {
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fw_domain_posting_read(d);
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break;
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}
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}
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static void
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fw_domains_reset(struct drm_i915_private *dev_priv, enum forcewake_domains fw_domains)
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{
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struct intel_uncore_forcewake_domain *d;
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enum forcewake_domain_id id;
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if (dev_priv->uncore.fw_domains == 0)
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return;
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for_each_fw_domain_mask(d, fw_domains, dev_priv, id)
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fw_domain_reset(d);
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fw_domains_posting_read(dev_priv);
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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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/* 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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if (wait_for_atomic_us((__raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG) &
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GEN6_GT_THREAD_STATUS_CORE_MASK) == 0, 500))
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DRM_ERROR("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 void gen6_gt_check_fifodbg(struct drm_i915_private *dev_priv)
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{
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u32 gtfifodbg;
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gtfifodbg = __raw_i915_read32(dev_priv, GTFIFODBG);
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if (WARN(gtfifodbg, "GT wake FIFO error 0x%x\n", gtfifodbg))
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__raw_i915_write32(dev_priv, GTFIFODBG, gtfifodbg);
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}
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static void fw_domains_put_with_fifo(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_put(dev_priv, fw_domains);
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gen6_gt_check_fifodbg(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 int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv)
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{
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int ret = 0;
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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->dev))
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dev_priv->uncore.fifo_count = fifo_free_entries(dev_priv);
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if (dev_priv->uncore.fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) {
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int loop = 500;
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u32 fifo = fifo_free_entries(dev_priv);
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while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) {
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udelay(10);
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fifo = fifo_free_entries(dev_priv);
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}
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if (WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES))
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++ret;
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dev_priv->uncore.fifo_count = fifo;
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}
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dev_priv->uncore.fifo_count--;
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return ret;
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}
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static void intel_uncore_fw_release_timer(unsigned long arg)
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{
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struct intel_uncore_forcewake_domain *domain = (void *)arg;
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unsigned long irqflags;
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assert_device_not_suspended(domain->i915);
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spin_lock_irqsave(&domain->i915->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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domain->i915->uncore.funcs.force_wake_put(domain->i915,
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1 << domain->id);
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spin_unlock_irqrestore(&domain->i915->uncore.lock, irqflags);
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}
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void intel_uncore_forcewake_reset(struct drm_device *dev, bool restore)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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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_domain_id id;
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enum forcewake_domains fw = 0, active_domains;
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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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active_domains = 0;
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for_each_fw_domain(domain, dev_priv, id) {
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if (del_timer_sync(&domain->timer) == 0)
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continue;
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intel_uncore_fw_release_timer((unsigned long)domain);
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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, id) {
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if (timer_pending(&domain->timer))
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active_domains |= (1 << id);
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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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for_each_fw_domain(domain, dev_priv, id)
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if (domain->wake_count)
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fw |= 1 << id;
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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, FORCEWAKE_ALL);
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if (restore) { /* If reset with a user forcewake, try to restore */
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if (fw)
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dev_priv->uncore.funcs.force_wake_get(dev_priv, fw);
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if (IS_GEN6(dev) || IS_GEN7(dev))
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dev_priv->uncore.fifo_count =
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fifo_free_entries(dev_priv);
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}
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if (!restore)
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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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}
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static void intel_uncore_ellc_detect(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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if ((IS_HASWELL(dev) || IS_BROADWELL(dev) ||
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INTEL_INFO(dev)->gen >= 9) &&
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(__raw_i915_read32(dev_priv, HSW_EDRAM_PRESENT) & EDRAM_ENABLED)) {
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/* The docs do not explain exactly how the calculation can be
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* made. It is somewhat guessable, but for now, it's always
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* 128MB.
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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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dev_priv->ellc_size = 128;
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DRM_INFO("Found %zuMB of eLLC\n", dev_priv->ellc_size);
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}
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}
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static void __intel_uncore_early_sanitize(struct drm_device *dev,
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bool restore_forcewake)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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if (HAS_FPGA_DBG_UNCLAIMED(dev))
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__raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
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/* clear out old GT FIFO errors */
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if (IS_GEN6(dev) || IS_GEN7(dev))
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__raw_i915_write32(dev_priv, GTFIFODBG,
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__raw_i915_read32(dev_priv, GTFIFODBG));
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intel_uncore_forcewake_reset(dev, restore_forcewake);
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}
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void intel_uncore_early_sanitize(struct drm_device *dev, bool restore_forcewake)
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{
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__intel_uncore_early_sanitize(dev, restore_forcewake);
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i915_check_and_clear_faults(dev);
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}
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void intel_uncore_sanitize(struct drm_device *dev)
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{
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/* BIOS often leaves RC6 enabled, but disable it for hw init */
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intel_disable_gt_powersave(dev);
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}
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/**
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* intel_uncore_forcewake_get - grab forcewake domain references
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* @dev_priv: i915 device instance
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* @fw_domains: forcewake domains to get reference on
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*
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* This function can be used get GT's forcewake domain references.
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* Normal register access will handle the forcewake domains automatically.
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* However if some sequence requires the GT to not power down a particular
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* forcewake domains this function should be called at the beginning of the
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* sequence. And subsequently the reference should be dropped by symmetric
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* call to intel_unforce_forcewake_put(). Usually caller wants all the domains
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* to be kept awake so the @fw_domains would be then FORCEWAKE_ALL.
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*/
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void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv,
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enum forcewake_domains fw_domains)
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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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enum forcewake_domain_id id;
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if (!dev_priv->uncore.funcs.force_wake_get)
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return;
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WARN_ON(dev_priv->pm.suspended);
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fw_domains &= dev_priv->uncore.fw_domains;
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spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
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for_each_fw_domain_mask(domain, fw_domains, dev_priv, id) {
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if (domain->wake_count++)
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fw_domains &= ~(1 << id);
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}
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if (fw_domains)
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dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains);
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spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
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}
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/**
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* intel_uncore_forcewake_put - release a forcewake domain reference
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* @dev_priv: i915 device instance
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* @fw_domains: forcewake domains to put references
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*
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* This function drops the device-level forcewakes for specified
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* domains obtained by intel_uncore_forcewake_get().
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*/
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void intel_uncore_forcewake_put(struct drm_i915_private *dev_priv,
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enum forcewake_domains fw_domains)
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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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enum forcewake_domain_id id;
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if (!dev_priv->uncore.funcs.force_wake_put)
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return;
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fw_domains &= dev_priv->uncore.fw_domains;
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spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
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for_each_fw_domain_mask(domain, fw_domains, dev_priv, id) {
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if (WARN_ON(domain->wake_count == 0))
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continue;
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if (--domain->wake_count)
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continue;
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domain->wake_count++;
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fw_domain_arm_timer(domain);
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}
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spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
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}
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void assert_forcewakes_inactive(struct drm_i915_private *dev_priv)
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{
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struct intel_uncore_forcewake_domain *domain;
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enum forcewake_domain_id id;
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if (!dev_priv->uncore.funcs.force_wake_get)
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return;
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for_each_fw_domain(domain, dev_priv, id)
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WARN_ON(domain->wake_count);
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}
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/* We give fast paths for the really cool registers */
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#define NEEDS_FORCE_WAKE(dev_priv, reg) \
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((reg) < 0x40000 && (reg) != FORCEWAKE)
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#define REG_RANGE(reg, start, end) ((reg) >= (start) && (reg) < (end))
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#define FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg) \
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(REG_RANGE((reg), 0x2000, 0x4000) || \
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REG_RANGE((reg), 0x5000, 0x8000) || \
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REG_RANGE((reg), 0xB000, 0x12000) || \
|
|
REG_RANGE((reg), 0x2E000, 0x30000))
|
|
|
|
#define FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg) \
|
|
(REG_RANGE((reg), 0x12000, 0x14000) || \
|
|
REG_RANGE((reg), 0x22000, 0x24000) || \
|
|
REG_RANGE((reg), 0x30000, 0x40000))
|
|
|
|
#define FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg) \
|
|
(REG_RANGE((reg), 0x2000, 0x4000) || \
|
|
REG_RANGE((reg), 0x5200, 0x8000) || \
|
|
REG_RANGE((reg), 0x8300, 0x8500) || \
|
|
REG_RANGE((reg), 0xB000, 0xB480) || \
|
|
REG_RANGE((reg), 0xE000, 0xE800))
|
|
|
|
#define FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg) \
|
|
(REG_RANGE((reg), 0x8800, 0x8900) || \
|
|
REG_RANGE((reg), 0xD000, 0xD800) || \
|
|
REG_RANGE((reg), 0x12000, 0x14000) || \
|
|
REG_RANGE((reg), 0x1A000, 0x1C000) || \
|
|
REG_RANGE((reg), 0x1E800, 0x1EA00) || \
|
|
REG_RANGE((reg), 0x30000, 0x38000))
|
|
|
|
#define FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg) \
|
|
(REG_RANGE((reg), 0x4000, 0x5000) || \
|
|
REG_RANGE((reg), 0x8000, 0x8300) || \
|
|
REG_RANGE((reg), 0x8500, 0x8600) || \
|
|
REG_RANGE((reg), 0x9000, 0xB000) || \
|
|
REG_RANGE((reg), 0xF000, 0x10000))
|
|
|
|
#define FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) \
|
|
REG_RANGE((reg), 0xB00, 0x2000)
|
|
|
|
#define FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) \
|
|
(REG_RANGE((reg), 0x2000, 0x2700) || \
|
|
REG_RANGE((reg), 0x3000, 0x4000) || \
|
|
REG_RANGE((reg), 0x5200, 0x8000) || \
|
|
REG_RANGE((reg), 0x8140, 0x8160) || \
|
|
REG_RANGE((reg), 0x8300, 0x8500) || \
|
|
REG_RANGE((reg), 0x8C00, 0x8D00) || \
|
|
REG_RANGE((reg), 0xB000, 0xB480) || \
|
|
REG_RANGE((reg), 0xE000, 0xE900) || \
|
|
REG_RANGE((reg), 0x24400, 0x24800))
|
|
|
|
#define FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) \
|
|
(REG_RANGE((reg), 0x8130, 0x8140) || \
|
|
REG_RANGE((reg), 0x8800, 0x8A00) || \
|
|
REG_RANGE((reg), 0xD000, 0xD800) || \
|
|
REG_RANGE((reg), 0x12000, 0x14000) || \
|
|
REG_RANGE((reg), 0x1A000, 0x1EA00) || \
|
|
REG_RANGE((reg), 0x30000, 0x40000))
|
|
|
|
#define FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg) \
|
|
REG_RANGE((reg), 0x9400, 0x9800)
|
|
|
|
#define FORCEWAKE_GEN9_BLITTER_RANGE_OFFSET(reg) \
|
|
((reg) < 0x40000 &&\
|
|
!FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) && \
|
|
!FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) && \
|
|
!FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) && \
|
|
!FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg))
|
|
|
|
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
|
|
hsw_unclaimed_reg_debug(struct drm_i915_private *dev_priv, u32 reg, bool read,
|
|
bool before)
|
|
{
|
|
const char *op = read ? "reading" : "writing to";
|
|
const char *when = before ? "before" : "after";
|
|
|
|
if (!i915.mmio_debug)
|
|
return;
|
|
|
|
if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) {
|
|
WARN(1, "Unclaimed register detected %s %s register 0x%x\n",
|
|
when, op, reg);
|
|
__raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
|
|
}
|
|
}
|
|
|
|
static void
|
|
hsw_unclaimed_reg_detect(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (i915.mmio_debug)
|
|
return;
|
|
|
|
if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) {
|
|
DRM_ERROR("Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem.");
|
|
__raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
|
|
}
|
|
}
|
|
|
|
#define GEN2_READ_HEADER(x) \
|
|
u##x val = 0; \
|
|
assert_device_not_suspended(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, off_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, off_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) \
|
|
unsigned long irqflags; \
|
|
u##x val = 0; \
|
|
assert_device_not_suspended(dev_priv); \
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags)
|
|
|
|
#define GEN6_READ_FOOTER \
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \
|
|
trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
|
|
return val
|
|
|
|
static inline void __force_wake_get(struct drm_i915_private *dev_priv,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
enum forcewake_domain_id id;
|
|
|
|
if (WARN_ON(!fw_domains))
|
|
return;
|
|
|
|
/* Ideally GCC would be constant-fold and eliminate this loop */
|
|
for_each_fw_domain_mask(domain, fw_domains, dev_priv, id) {
|
|
if (domain->wake_count) {
|
|
fw_domains &= ~(1 << id);
|
|
continue;
|
|
}
|
|
|
|
domain->wake_count++;
|
|
fw_domain_arm_timer(domain);
|
|
}
|
|
|
|
if (fw_domains)
|
|
dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains);
|
|
}
|
|
|
|
#define __vgpu_read(x) \
|
|
static u##x \
|
|
vgpu_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
|
|
GEN6_READ_HEADER(x); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
GEN6_READ_FOOTER; \
|
|
}
|
|
|
|
#define __gen6_read(x) \
|
|
static u##x \
|
|
gen6_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
|
|
GEN6_READ_HEADER(x); \
|
|
hsw_unclaimed_reg_debug(dev_priv, reg, true, true); \
|
|
if (NEEDS_FORCE_WAKE((dev_priv), (reg))) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_RENDER); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
hsw_unclaimed_reg_debug(dev_priv, reg, true, false); \
|
|
GEN6_READ_FOOTER; \
|
|
}
|
|
|
|
#define __vlv_read(x) \
|
|
static u##x \
|
|
vlv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
|
|
GEN6_READ_HEADER(x); \
|
|
if (FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_RENDER); \
|
|
else if (FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_MEDIA); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
GEN6_READ_FOOTER; \
|
|
}
|
|
|
|
#define __chv_read(x) \
|
|
static u##x \
|
|
chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
|
|
GEN6_READ_HEADER(x); \
|
|
if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_RENDER); \
|
|
else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_MEDIA); \
|
|
else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, \
|
|
FORCEWAKE_RENDER | FORCEWAKE_MEDIA); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
GEN6_READ_FOOTER; \
|
|
}
|
|
|
|
#define SKL_NEEDS_FORCE_WAKE(dev_priv, reg) \
|
|
((reg) < 0x40000 && !FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg))
|
|
|
|
#define __gen9_read(x) \
|
|
static u##x \
|
|
gen9_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
|
|
enum forcewake_domains fw_engine; \
|
|
GEN6_READ_HEADER(x); \
|
|
if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg))) \
|
|
fw_engine = 0; \
|
|
else if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) \
|
|
fw_engine = FORCEWAKE_RENDER; \
|
|
else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) \
|
|
fw_engine = FORCEWAKE_MEDIA; \
|
|
else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) \
|
|
fw_engine = FORCEWAKE_RENDER | FORCEWAKE_MEDIA; \
|
|
else \
|
|
fw_engine = FORCEWAKE_BLITTER; \
|
|
if (fw_engine) \
|
|
__force_wake_get(dev_priv, fw_engine); \
|
|
val = __raw_i915_read##x(dev_priv, reg); \
|
|
GEN6_READ_FOOTER; \
|
|
}
|
|
|
|
__vgpu_read(8)
|
|
__vgpu_read(16)
|
|
__vgpu_read(32)
|
|
__vgpu_read(64)
|
|
__gen9_read(8)
|
|
__gen9_read(16)
|
|
__gen9_read(32)
|
|
__gen9_read(64)
|
|
__chv_read(8)
|
|
__chv_read(16)
|
|
__chv_read(32)
|
|
__chv_read(64)
|
|
__vlv_read(8)
|
|
__vlv_read(16)
|
|
__vlv_read(32)
|
|
__vlv_read(64)
|
|
__gen6_read(8)
|
|
__gen6_read(16)
|
|
__gen6_read(32)
|
|
__gen6_read(64)
|
|
|
|
#undef __gen9_read
|
|
#undef __chv_read
|
|
#undef __vlv_read
|
|
#undef __gen6_read
|
|
#undef __vgpu_read
|
|
#undef GEN6_READ_FOOTER
|
|
#undef GEN6_READ_HEADER
|
|
|
|
#define GEN2_WRITE_HEADER \
|
|
trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
|
|
assert_device_not_suspended(dev_priv); \
|
|
|
|
#define GEN2_WRITE_FOOTER
|
|
|
|
#define __gen2_write(x) \
|
|
static void \
|
|
gen2_write##x(struct drm_i915_private *dev_priv, off_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, off_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)
|
|
__gen5_write(64)
|
|
__gen2_write(8)
|
|
__gen2_write(16)
|
|
__gen2_write(32)
|
|
__gen2_write(64)
|
|
|
|
#undef __gen5_write
|
|
#undef __gen2_write
|
|
|
|
#undef GEN2_WRITE_FOOTER
|
|
#undef GEN2_WRITE_HEADER
|
|
|
|
#define GEN6_WRITE_HEADER \
|
|
unsigned long irqflags; \
|
|
trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
|
|
assert_device_not_suspended(dev_priv); \
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags)
|
|
|
|
#define GEN6_WRITE_FOOTER \
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags)
|
|
|
|
#define __gen6_write(x) \
|
|
static void \
|
|
gen6_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \
|
|
u32 __fifo_ret = 0; \
|
|
GEN6_WRITE_HEADER; \
|
|
if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
|
|
__fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
|
|
} \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
if (unlikely(__fifo_ret)) { \
|
|
gen6_gt_check_fifodbg(dev_priv); \
|
|
} \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
#define __hsw_write(x) \
|
|
static void \
|
|
hsw_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \
|
|
u32 __fifo_ret = 0; \
|
|
GEN6_WRITE_HEADER; \
|
|
if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
|
|
__fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
|
|
} \
|
|
hsw_unclaimed_reg_debug(dev_priv, reg, false, true); \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
if (unlikely(__fifo_ret)) { \
|
|
gen6_gt_check_fifodbg(dev_priv); \
|
|
} \
|
|
hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \
|
|
hsw_unclaimed_reg_detect(dev_priv); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
#define __vgpu_write(x) \
|
|
static void vgpu_write##x(struct drm_i915_private *dev_priv, \
|
|
off_t reg, u##x val, bool trace) { \
|
|
GEN6_WRITE_HEADER; \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
static const u32 gen8_shadowed_regs[] = {
|
|
FORCEWAKE_MT,
|
|
GEN6_RPNSWREQ,
|
|
GEN6_RC_VIDEO_FREQ,
|
|
RING_TAIL(RENDER_RING_BASE),
|
|
RING_TAIL(GEN6_BSD_RING_BASE),
|
|
RING_TAIL(VEBOX_RING_BASE),
|
|
RING_TAIL(BLT_RING_BASE),
|
|
/* TODO: Other registers are not yet used */
|
|
};
|
|
|
|
static bool is_gen8_shadowed(struct drm_i915_private *dev_priv, u32 reg)
|
|
{
|
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(gen8_shadowed_regs); i++)
|
|
if (reg == gen8_shadowed_regs[i])
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
#define __gen8_write(x) \
|
|
static void \
|
|
gen8_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \
|
|
GEN6_WRITE_HEADER; \
|
|
hsw_unclaimed_reg_debug(dev_priv, reg, false, true); \
|
|
if (reg < 0x40000 && !is_gen8_shadowed(dev_priv, reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_RENDER); \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \
|
|
hsw_unclaimed_reg_detect(dev_priv); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
#define __chv_write(x) \
|
|
static void \
|
|
chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \
|
|
bool shadowed = is_gen8_shadowed(dev_priv, reg); \
|
|
GEN6_WRITE_HEADER; \
|
|
if (!shadowed) { \
|
|
if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_RENDER); \
|
|
else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_MEDIA); \
|
|
else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) \
|
|
__force_wake_get(dev_priv, FORCEWAKE_RENDER | FORCEWAKE_MEDIA); \
|
|
} \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
static const u32 gen9_shadowed_regs[] = {
|
|
RING_TAIL(RENDER_RING_BASE),
|
|
RING_TAIL(GEN6_BSD_RING_BASE),
|
|
RING_TAIL(VEBOX_RING_BASE),
|
|
RING_TAIL(BLT_RING_BASE),
|
|
FORCEWAKE_BLITTER_GEN9,
|
|
FORCEWAKE_RENDER_GEN9,
|
|
FORCEWAKE_MEDIA_GEN9,
|
|
GEN6_RPNSWREQ,
|
|
GEN6_RC_VIDEO_FREQ,
|
|
/* TODO: Other registers are not yet used */
|
|
};
|
|
|
|
static bool is_gen9_shadowed(struct drm_i915_private *dev_priv, u32 reg)
|
|
{
|
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(gen9_shadowed_regs); i++)
|
|
if (reg == gen9_shadowed_regs[i])
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
#define __gen9_write(x) \
|
|
static void \
|
|
gen9_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, \
|
|
bool trace) { \
|
|
enum forcewake_domains fw_engine; \
|
|
GEN6_WRITE_HEADER; \
|
|
if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg)) || \
|
|
is_gen9_shadowed(dev_priv, reg)) \
|
|
fw_engine = 0; \
|
|
else if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) \
|
|
fw_engine = FORCEWAKE_RENDER; \
|
|
else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) \
|
|
fw_engine = FORCEWAKE_MEDIA; \
|
|
else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) \
|
|
fw_engine = FORCEWAKE_RENDER | FORCEWAKE_MEDIA; \
|
|
else \
|
|
fw_engine = FORCEWAKE_BLITTER; \
|
|
if (fw_engine) \
|
|
__force_wake_get(dev_priv, fw_engine); \
|
|
__raw_i915_write##x(dev_priv, reg, val); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
__gen9_write(8)
|
|
__gen9_write(16)
|
|
__gen9_write(32)
|
|
__gen9_write(64)
|
|
__chv_write(8)
|
|
__chv_write(16)
|
|
__chv_write(32)
|
|
__chv_write(64)
|
|
__gen8_write(8)
|
|
__gen8_write(16)
|
|
__gen8_write(32)
|
|
__gen8_write(64)
|
|
__hsw_write(8)
|
|
__hsw_write(16)
|
|
__hsw_write(32)
|
|
__hsw_write(64)
|
|
__gen6_write(8)
|
|
__gen6_write(16)
|
|
__gen6_write(32)
|
|
__gen6_write(64)
|
|
__vgpu_write(8)
|
|
__vgpu_write(16)
|
|
__vgpu_write(32)
|
|
__vgpu_write(64)
|
|
|
|
#undef __gen9_write
|
|
#undef __chv_write
|
|
#undef __gen8_write
|
|
#undef __hsw_write
|
|
#undef __gen6_write
|
|
#undef __vgpu_write
|
|
#undef GEN6_WRITE_FOOTER
|
|
#undef GEN6_WRITE_HEADER
|
|
|
|
#define ASSIGN_WRITE_MMIO_VFUNCS(x) \
|
|
do { \
|
|
dev_priv->uncore.funcs.mmio_writeb = x##_write8; \
|
|
dev_priv->uncore.funcs.mmio_writew = x##_write16; \
|
|
dev_priv->uncore.funcs.mmio_writel = x##_write32; \
|
|
dev_priv->uncore.funcs.mmio_writeq = x##_write64; \
|
|
} while (0)
|
|
|
|
#define ASSIGN_READ_MMIO_VFUNCS(x) \
|
|
do { \
|
|
dev_priv->uncore.funcs.mmio_readb = x##_read8; \
|
|
dev_priv->uncore.funcs.mmio_readw = x##_read16; \
|
|
dev_priv->uncore.funcs.mmio_readl = x##_read32; \
|
|
dev_priv->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,
|
|
u32 reg_set, u32 reg_ack)
|
|
{
|
|
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);
|
|
|
|
d->wake_count = 0;
|
|
d->reg_set = reg_set;
|
|
d->reg_ack = reg_ack;
|
|
|
|
if (IS_GEN6(dev_priv)) {
|
|
d->val_reset = 0;
|
|
d->val_set = FORCEWAKE_KERNEL;
|
|
d->val_clear = 0;
|
|
} else {
|
|
/* WaRsClearFWBitsAtReset:bdw,skl */
|
|
d->val_reset = _MASKED_BIT_DISABLE(0xffff);
|
|
d->val_set = _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL);
|
|
d->val_clear = _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL);
|
|
}
|
|
|
|
if (IS_VALLEYVIEW(dev_priv))
|
|
d->reg_post = FORCEWAKE_ACK_VLV;
|
|
else if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv) || IS_GEN8(dev_priv))
|
|
d->reg_post = ECOBUS;
|
|
else
|
|
d->reg_post = 0;
|
|
|
|
d->i915 = dev_priv;
|
|
d->id = domain_id;
|
|
|
|
setup_timer(&d->timer, intel_uncore_fw_release_timer, (unsigned long)d);
|
|
|
|
dev_priv->uncore.fw_domains |= (1 << domain_id);
|
|
|
|
fw_domain_reset(d);
|
|
}
|
|
|
|
static void intel_uncore_fw_domains_init(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (INTEL_INFO(dev_priv->dev)->gen <= 5)
|
|
return;
|
|
|
|
if (IS_GEN9(dev)) {
|
|
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_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)) {
|
|
dev_priv->uncore.funcs.force_wake_get = fw_domains_get;
|
|
if (!IS_CHERRYVIEW(dev))
|
|
dev_priv->uncore.funcs.force_wake_put =
|
|
fw_domains_put_with_fifo;
|
|
else
|
|
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) || IS_BROADWELL(dev)) {
|
|
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)) {
|
|
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_with_fifo;
|
|
|
|
/* 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);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
fw_domains_get_with_thread_status(dev_priv, FORCEWAKE_ALL);
|
|
ecobus = __raw_i915_read32(dev_priv, ECOBUS);
|
|
fw_domains_put_with_fifo(dev_priv, FORCEWAKE_ALL);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
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_GEN6(dev)) {
|
|
dev_priv->uncore.funcs.force_wake_get =
|
|
fw_domains_get_with_thread_status;
|
|
dev_priv->uncore.funcs.force_wake_put =
|
|
fw_domains_put_with_fifo;
|
|
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);
|
|
}
|
|
|
|
void intel_uncore_init(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
i915_check_vgpu(dev);
|
|
|
|
intel_uncore_ellc_detect(dev);
|
|
intel_uncore_fw_domains_init(dev);
|
|
__intel_uncore_early_sanitize(dev, false);
|
|
|
|
switch (INTEL_INFO(dev)->gen) {
|
|
default:
|
|
MISSING_CASE(INTEL_INFO(dev)->gen);
|
|
return;
|
|
case 9:
|
|
ASSIGN_WRITE_MMIO_VFUNCS(gen9);
|
|
ASSIGN_READ_MMIO_VFUNCS(gen9);
|
|
break;
|
|
case 8:
|
|
if (IS_CHERRYVIEW(dev)) {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(chv);
|
|
ASSIGN_READ_MMIO_VFUNCS(chv);
|
|
|
|
} else {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(gen8);
|
|
ASSIGN_READ_MMIO_VFUNCS(gen6);
|
|
}
|
|
break;
|
|
case 7:
|
|
case 6:
|
|
if (IS_HASWELL(dev)) {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(hsw);
|
|
} else {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(gen6);
|
|
}
|
|
|
|
if (IS_VALLEYVIEW(dev)) {
|
|
ASSIGN_READ_MMIO_VFUNCS(vlv);
|
|
} else {
|
|
ASSIGN_READ_MMIO_VFUNCS(gen6);
|
|
}
|
|
break;
|
|
case 5:
|
|
ASSIGN_WRITE_MMIO_VFUNCS(gen5);
|
|
ASSIGN_READ_MMIO_VFUNCS(gen5);
|
|
break;
|
|
case 4:
|
|
case 3:
|
|
case 2:
|
|
ASSIGN_WRITE_MMIO_VFUNCS(gen2);
|
|
ASSIGN_READ_MMIO_VFUNCS(gen2);
|
|
break;
|
|
}
|
|
|
|
if (intel_vgpu_active(dev)) {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(vgpu);
|
|
ASSIGN_READ_MMIO_VFUNCS(vgpu);
|
|
}
|
|
|
|
i915_check_and_clear_faults(dev);
|
|
}
|
|
#undef ASSIGN_WRITE_MMIO_VFUNCS
|
|
#undef ASSIGN_READ_MMIO_VFUNCS
|
|
|
|
void intel_uncore_fini(struct drm_device *dev)
|
|
{
|
|
/* Paranoia: make sure we have disabled everything before we exit. */
|
|
intel_uncore_sanitize(dev);
|
|
intel_uncore_forcewake_reset(dev, false);
|
|
}
|
|
|
|
#define GEN_RANGE(l, h) GENMASK(h, l)
|
|
|
|
static const struct register_whitelist {
|
|
uint64_t offset;
|
|
uint32_t size;
|
|
/* supported gens, 0x10 for 4, 0x30 for 4 and 5, etc. */
|
|
uint32_t gen_bitmask;
|
|
} whitelist[] = {
|
|
{ RING_TIMESTAMP(RENDER_RING_BASE), 8, GEN_RANGE(4, 9) },
|
|
};
|
|
|
|
int i915_reg_read_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_i915_reg_read *reg = data;
|
|
struct register_whitelist const *entry = whitelist;
|
|
int i, ret = 0;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
|
|
if (entry->offset == reg->offset &&
|
|
(1 << INTEL_INFO(dev)->gen & entry->gen_bitmask))
|
|
break;
|
|
}
|
|
|
|
if (i == ARRAY_SIZE(whitelist))
|
|
return -EINVAL;
|
|
|
|
intel_runtime_pm_get(dev_priv);
|
|
|
|
switch (entry->size) {
|
|
case 8:
|
|
reg->val = I915_READ64(reg->offset);
|
|
break;
|
|
case 4:
|
|
reg->val = I915_READ(reg->offset);
|
|
break;
|
|
case 2:
|
|
reg->val = I915_READ16(reg->offset);
|
|
break;
|
|
case 1:
|
|
reg->val = I915_READ8(reg->offset);
|
|
break;
|
|
default:
|
|
MISSING_CASE(entry->size);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
intel_runtime_pm_put(dev_priv);
|
|
return ret;
|
|
}
|
|
|
|
int i915_get_reset_stats_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_i915_reset_stats *args = data;
|
|
struct i915_ctx_hang_stats *hs;
|
|
struct intel_context *ctx;
|
|
int ret;
|
|
|
|
if (args->flags || args->pad)
|
|
return -EINVAL;
|
|
|
|
if (args->ctx_id == DEFAULT_CONTEXT_HANDLE && !capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
ret = mutex_lock_interruptible(&dev->struct_mutex);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ctx = i915_gem_context_get(file->driver_priv, args->ctx_id);
|
|
if (IS_ERR(ctx)) {
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return PTR_ERR(ctx);
|
|
}
|
|
hs = &ctx->hang_stats;
|
|
|
|
if (capable(CAP_SYS_ADMIN))
|
|
args->reset_count = i915_reset_count(&dev_priv->gpu_error);
|
|
else
|
|
args->reset_count = 0;
|
|
|
|
args->batch_active = hs->batch_active;
|
|
args->batch_pending = hs->batch_pending;
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i915_reset_complete(struct drm_device *dev)
|
|
{
|
|
u8 gdrst;
|
|
pci_read_config_byte(dev->pdev, I915_GDRST, &gdrst);
|
|
return (gdrst & GRDOM_RESET_STATUS) == 0;
|
|
}
|
|
|
|
static int i915_do_reset(struct drm_device *dev)
|
|
{
|
|
/* assert reset for at least 20 usec */
|
|
pci_write_config_byte(dev->pdev, I915_GDRST, GRDOM_RESET_ENABLE);
|
|
udelay(20);
|
|
pci_write_config_byte(dev->pdev, I915_GDRST, 0);
|
|
|
|
return wait_for(i915_reset_complete(dev), 500);
|
|
}
|
|
|
|
static int g4x_reset_complete(struct drm_device *dev)
|
|
{
|
|
u8 gdrst;
|
|
pci_read_config_byte(dev->pdev, I915_GDRST, &gdrst);
|
|
return (gdrst & GRDOM_RESET_ENABLE) == 0;
|
|
}
|
|
|
|
static int g33_do_reset(struct drm_device *dev)
|
|
{
|
|
pci_write_config_byte(dev->pdev, I915_GDRST, GRDOM_RESET_ENABLE);
|
|
return wait_for(g4x_reset_complete(dev), 500);
|
|
}
|
|
|
|
static int g4x_do_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int ret;
|
|
|
|
pci_write_config_byte(dev->pdev, I915_GDRST,
|
|
GRDOM_RENDER | GRDOM_RESET_ENABLE);
|
|
ret = wait_for(g4x_reset_complete(dev), 500);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* WaVcpClkGateDisableForMediaReset:ctg,elk */
|
|
I915_WRITE(VDECCLK_GATE_D, I915_READ(VDECCLK_GATE_D) | VCP_UNIT_CLOCK_GATE_DISABLE);
|
|
POSTING_READ(VDECCLK_GATE_D);
|
|
|
|
pci_write_config_byte(dev->pdev, I915_GDRST,
|
|
GRDOM_MEDIA | GRDOM_RESET_ENABLE);
|
|
ret = wait_for(g4x_reset_complete(dev), 500);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* WaVcpClkGateDisableForMediaReset:ctg,elk */
|
|
I915_WRITE(VDECCLK_GATE_D, I915_READ(VDECCLK_GATE_D) & ~VCP_UNIT_CLOCK_GATE_DISABLE);
|
|
POSTING_READ(VDECCLK_GATE_D);
|
|
|
|
pci_write_config_byte(dev->pdev, I915_GDRST, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ironlake_do_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int ret;
|
|
|
|
I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR,
|
|
ILK_GRDOM_RENDER | ILK_GRDOM_RESET_ENABLE);
|
|
ret = wait_for((I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) &
|
|
ILK_GRDOM_RESET_ENABLE) == 0, 500);
|
|
if (ret)
|
|
return ret;
|
|
|
|
I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR,
|
|
ILK_GRDOM_MEDIA | ILK_GRDOM_RESET_ENABLE);
|
|
ret = wait_for((I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) &
|
|
ILK_GRDOM_RESET_ENABLE) == 0, 500);
|
|
if (ret)
|
|
return ret;
|
|
|
|
I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gen6_do_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int ret;
|
|
|
|
/* Reset the chip */
|
|
|
|
/* GEN6_GDRST is not in the gt power well, no need to check
|
|
* for fifo space for the write or forcewake the chip for
|
|
* the read
|
|
*/
|
|
__raw_i915_write32(dev_priv, GEN6_GDRST, GEN6_GRDOM_FULL);
|
|
|
|
/* Spin waiting for the device to ack the reset request */
|
|
ret = wait_for((__raw_i915_read32(dev_priv, GEN6_GDRST) & GEN6_GRDOM_FULL) == 0, 500);
|
|
|
|
intel_uncore_forcewake_reset(dev, true);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int intel_gpu_reset(struct drm_device *dev)
|
|
{
|
|
if (INTEL_INFO(dev)->gen >= 6)
|
|
return gen6_do_reset(dev);
|
|
else if (IS_GEN5(dev))
|
|
return ironlake_do_reset(dev);
|
|
else if (IS_G4X(dev))
|
|
return g4x_do_reset(dev);
|
|
else if (IS_G33(dev))
|
|
return g33_do_reset(dev);
|
|
else if (INTEL_INFO(dev)->gen >= 3)
|
|
return i915_do_reset(dev);
|
|
else
|
|
return -ENODEV;
|
|
}
|
|
|
|
void intel_uncore_check_errors(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (HAS_FPGA_DBG_UNCLAIMED(dev) &&
|
|
(__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM)) {
|
|
DRM_ERROR("Unclaimed register before interrupt\n");
|
|
__raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
|
|
}
|
|
}
|