drm/i915: do not pass dev_priv to low-level forcewake functions

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

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 75646a1e0051c336b386c60057abaa9807c9c57e..7129eebc333bca7a87bb003385920e417521a944 100644 (file)
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -58,8 +58,11 @@ intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id)
        return "unknown";
 }
 
+#define fw_ack(d) readl((d)->reg_ack)
+#define fw_set(d, val) writel((val), (d)->reg_set)
+
 static inline void
-fw_domain_reset(struct drm_i915_private *i915,
+fw_domain_reset(const struct intel_uncore *uncore,
                const struct intel_uncore_forcewake_domain *d)
 {
        /*
@@ -67,7 +70,7 @@ fw_domain_reset(struct drm_i915_private *i915,
         * trying to reset here does exist at this point (engines could be fused
         * off in ICL+), so no waiting for acks
         */
-       __raw_i915_write32(i915, d->reg_set, i915->uncore.fw_reset);
+       fw_set(d, uncore->fw_reset);
 }
 
 static inline void
@@ -81,36 +84,32 @@ fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d)
 }
 
 static inline int
-__wait_for_ack(const struct drm_i915_private *i915,
-              const struct intel_uncore_forcewake_domain *d,
+__wait_for_ack(const struct intel_uncore_forcewake_domain *d,
               const u32 ack,
               const u32 value)
 {
-       return wait_for_atomic((__raw_i915_read32(i915, d->reg_ack) & ack) == value,
+       return wait_for_atomic((fw_ack(d) & ack) == value,
                               FORCEWAKE_ACK_TIMEOUT_MS);
 }
 
 static inline int
-wait_ack_clear(const struct drm_i915_private *i915,
-              const struct intel_uncore_forcewake_domain *d,
+wait_ack_clear(const struct intel_uncore_forcewake_domain *d,
               const u32 ack)
 {
-       return __wait_for_ack(i915, d, ack, 0);
+       return __wait_for_ack(d, ack, 0);
 }
 
 static inline int
-wait_ack_set(const struct drm_i915_private *i915,
-            const struct intel_uncore_forcewake_domain *d,
+wait_ack_set(const struct intel_uncore_forcewake_domain *d,
             const u32 ack)
 {
-       return __wait_for_ack(i915, d, ack, ack);
+       return __wait_for_ack(d, ack, ack);
 }
 
 static inline void
-fw_domain_wait_ack_clear(const struct drm_i915_private *i915,
-                        const struct intel_uncore_forcewake_domain *d)
+fw_domain_wait_ack_clear(const struct intel_uncore_forcewake_domain *d)
 {
-       if (wait_ack_clear(i915, d, FORCEWAKE_KERNEL))
+       if (wait_ack_clear(d, FORCEWAKE_KERNEL))
                DRM_ERROR("%s: timed out waiting for forcewake ack to clear.\n",
                          intel_uncore_forcewake_domain_to_str(d->id));
 }
@@ -121,8 +120,7 @@ enum ack_type {
 };
 
 static int
-fw_domain_wait_ack_with_fallback(const struct drm_i915_private *i915,
-                                const struct intel_uncore_forcewake_domain *d,
+fw_domain_wait_ack_with_fallback(const struct intel_uncore_forcewake_domain *d,
                                 const enum ack_type type)
 {
        const u32 ack_bit = FORCEWAKE_KERNEL;
@@ -146,141 +144,140 @@ fw_domain_wait_ack_with_fallback(const struct drm_i915_private *i915,
 
        pass = 1;
        do {
-               wait_ack_clear(i915, d, FORCEWAKE_KERNEL_FALLBACK);
+               wait_ack_clear(d, FORCEWAKE_KERNEL_FALLBACK);
 
-               __raw_i915_write32(i915, d->reg_set,
-                                  _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL_FALLBACK));
+               fw_set(d, _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL_FALLBACK));
                /* Give gt some time to relax before the polling frenzy */
                udelay(10 * pass);
-               wait_ack_set(i915, d, FORCEWAKE_KERNEL_FALLBACK);
+               wait_ack_set(d, FORCEWAKE_KERNEL_FALLBACK);
 
-               ack_detected = (__raw_i915_read32(i915, d->reg_ack) & ack_bit) == value;
+               ack_detected = (fw_ack(d) & ack_bit) == value;
 
-               __raw_i915_write32(i915, d->reg_set,
-                                  _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL_FALLBACK));
+               fw_set(d, _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL_FALLBACK));
        } while (!ack_detected && pass++ < 10);
 
        DRM_DEBUG_DRIVER("%s had to use fallback to %s ack, 0x%x (passes %u)\n",
                         intel_uncore_forcewake_domain_to_str(d->id),
                         type == ACK_SET ? "set" : "clear",
-                        __raw_i915_read32(i915, d->reg_ack),
+                        fw_ack(d),
                         pass);
 
        return ack_detected ? 0 : -ETIMEDOUT;
 }
 
 static inline void
-fw_domain_wait_ack_clear_fallback(const struct drm_i915_private *i915,
-                                 const struct intel_uncore_forcewake_domain *d)
+fw_domain_wait_ack_clear_fallback(const struct intel_uncore_forcewake_domain *d)
 {
-       if (likely(!wait_ack_clear(i915, d, FORCEWAKE_KERNEL)))
+       if (likely(!wait_ack_clear(d, FORCEWAKE_KERNEL)))
                return;
 
-       if (fw_domain_wait_ack_with_fallback(i915, d, ACK_CLEAR))
-               fw_domain_wait_ack_clear(i915, d);
+       if (fw_domain_wait_ack_with_fallback(d, ACK_CLEAR))
+               fw_domain_wait_ack_clear(d);
 }
 
 static inline void
-fw_domain_get(struct drm_i915_private *i915,
+fw_domain_get(const struct intel_uncore *uncore,
              const struct intel_uncore_forcewake_domain *d)
 {
-       __raw_i915_write32(i915, d->reg_set, i915->uncore.fw_set);
+       fw_set(d, uncore->fw_set);
 }
 
 static inline void
-fw_domain_wait_ack_set(const struct drm_i915_private *i915,
-                      const struct intel_uncore_forcewake_domain *d)
+fw_domain_wait_ack_set(const struct intel_uncore_forcewake_domain *d)
 {
-       if (wait_ack_set(i915, d, FORCEWAKE_KERNEL))
+       if (wait_ack_set(d, FORCEWAKE_KERNEL))
                DRM_ERROR("%s: timed out waiting for forcewake ack request.\n",
                          intel_uncore_forcewake_domain_to_str(d->id));
 }
 
 static inline void
-fw_domain_wait_ack_set_fallback(const struct drm_i915_private *i915,
-                               const struct intel_uncore_forcewake_domain *d)
+fw_domain_wait_ack_set_fallback(const struct intel_uncore_forcewake_domain *d)
 {
-       if (likely(!wait_ack_set(i915, d, FORCEWAKE_KERNEL)))
+       if (likely(!wait_ack_set(d, FORCEWAKE_KERNEL)))
                return;
 
-       if (fw_domain_wait_ack_with_fallback(i915, d, ACK_SET))
-               fw_domain_wait_ack_set(i915, d);
+       if (fw_domain_wait_ack_with_fallback(d, ACK_SET))
+               fw_domain_wait_ack_set(d);
 }
 
 static inline void
-fw_domain_put(const struct drm_i915_private *i915,
+fw_domain_put(const struct intel_uncore *uncore,
              const struct intel_uncore_forcewake_domain *d)
 {
-       __raw_i915_write32(i915, d->reg_set, i915->uncore.fw_clear);
+       fw_set(d, uncore->fw_clear);
 }
 
 static void
 fw_domains_get(struct drm_i915_private *i915, enum forcewake_domains fw_domains)
 {
+       struct intel_uncore *uncore = &i915->uncore;
        struct intel_uncore_forcewake_domain *d;
        unsigned int tmp;
 
-       GEM_BUG_ON(fw_domains & ~i915->uncore.fw_domains);
+       GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
 
        for_each_fw_domain_masked(d, fw_domains, i915, tmp) {
-               fw_domain_wait_ack_clear(i915, d);
-               fw_domain_get(i915, d);
+               fw_domain_wait_ack_clear(d);
+               fw_domain_get(uncore, d);
        }
 
        for_each_fw_domain_masked(d, fw_domains, i915, tmp)
-               fw_domain_wait_ack_set(i915, d);
+               fw_domain_wait_ack_set(d);
 
-       i915->uncore.fw_domains_active |= fw_domains;
+       uncore->fw_domains_active |= fw_domains;
 }
 
 static void
 fw_domains_get_with_fallback(struct drm_i915_private *i915,
                             enum forcewake_domains fw_domains)
 {
+       struct intel_uncore *uncore = &i915->uncore;
        struct intel_uncore_forcewake_domain *d;
        unsigned int tmp;
 
-       GEM_BUG_ON(fw_domains & ~i915->uncore.fw_domains);
+       GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
 
        for_each_fw_domain_masked(d, fw_domains, i915, tmp) {
-               fw_domain_wait_ack_clear_fallback(i915, d);
-               fw_domain_get(i915, d);
+               fw_domain_wait_ack_clear_fallback(d);
+               fw_domain_get(uncore, d);
        }
 
        for_each_fw_domain_masked(d, fw_domains, i915, tmp)
-               fw_domain_wait_ack_set_fallback(i915, d);
+               fw_domain_wait_ack_set_fallback(d);
 
-       i915->uncore.fw_domains_active |= fw_domains;
+       uncore->fw_domains_active |= fw_domains;
 }
 
 static void
 fw_domains_put(struct drm_i915_private *i915, enum forcewake_domains fw_domains)
 {
+       struct intel_uncore *uncore = &i915->uncore;
        struct intel_uncore_forcewake_domain *d;
        unsigned int tmp;
 
-       GEM_BUG_ON(fw_domains & ~i915->uncore.fw_domains);
+       GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
 
        for_each_fw_domain_masked(d, fw_domains, i915, tmp)
-               fw_domain_put(i915, d);
+               fw_domain_put(uncore, d);
 
-       i915->uncore.fw_domains_active &= ~fw_domains;
+       uncore->fw_domains_active &= ~fw_domains;
 }
 
 static void
 fw_domains_reset(struct drm_i915_private *i915,
                 enum forcewake_domains fw_domains)
 {
+       struct intel_uncore *uncore = &i915->uncore;
        struct intel_uncore_forcewake_domain *d;
        unsigned int tmp;
 
        if (!fw_domains)
                return;
 
-       GEM_BUG_ON(fw_domains & ~i915->uncore.fw_domains);
+       GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
 
        for_each_fw_domain_masked(d, fw_domains, i915, tmp)
-               fw_domain_reset(i915, d);
+               fw_domain_reset(uncore, d);
 }
 
 static inline u32 gt_thread_status(struct drm_i915_private *dev_priv)
@@ -1337,12 +1334,13 @@ static void fw_domain_init(struct drm_i915_private *dev_priv,
                           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 = &dev_priv->uncore.fw_domain[domain_id];
+       d = &uncore->fw_domain[domain_id];
 
        WARN_ON(d->wake_count);
 
@@ -1350,8 +1348,8 @@ static void fw_domain_init(struct drm_i915_private *dev_priv,
        WARN_ON(!i915_mmio_reg_valid(reg_ack));
 
        d->wake_count = 0;
-       d->reg_set = reg_set;
-       d->reg_ack = reg_ack;
+       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;
 
@@ -1371,9 +1369,9 @@ static void fw_domain_init(struct drm_i915_private *dev_priv,
        hrtimer_init(&d->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
        d->timer.function = intel_uncore_fw_release_timer;
 
-       dev_priv->uncore.fw_domains |= BIT(domain_id);
+       uncore->fw_domains |= BIT(domain_id);
 
-       fw_domain_reset(dev_priv, d);
+       fw_domain_reset(uncore, d);
 }
 
 static void fw_domain_fini(struct drm_i915_private *dev_priv,

diff --git a/drivers/gpu/drm/i915/intel_uncore.h b/drivers/gpu/drm/i915/intel_uncore.h
index e5e157d288de4b9fa06e9add47facaa28925e4e9..b0a95469babff93ed37d62a8cddd0d73487068e1 100644 (file)
--- a/drivers/gpu/drm/i915/intel_uncore.h
+++ b/drivers/gpu/drm/i915/intel_uncore.h
@@ -116,8 +116,8 @@ struct intel_uncore {
                unsigned int wake_count;
                bool active;
                struct hrtimer timer;
-               i915_reg_t reg_set;
-               i915_reg_t reg_ack;
+               u32 __iomem *reg_set;
+               u32 __iomem *reg_ack;
        } fw_domain[FW_DOMAIN_ID_COUNT];
 
        struct {
@@ -138,6 +138,11 @@ struct intel_uncore {
 #define for_each_fw_domain(domain__, dev_priv__, tmp__) \
        for_each_fw_domain_masked(domain__, (dev_priv__)->uncore.fw_domains, dev_priv__, tmp__)
 
+static inline struct intel_uncore *
+forcewake_domain_to_uncore(const struct intel_uncore_forcewake_domain *d)
+{
+       return container_of(d, struct intel_uncore, fw_domain[d->id]);
+}
 
 void intel_uncore_sanitize(struct drm_i915_private *dev_priv);
 void intel_uncore_init(struct drm_i915_private *dev_priv);