]> asedeno.scripts.mit.edu Git - linux.git/commitdiff
drm/i915: intel_wait_for_register_fw to uncore
authorDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Mon, 25 Mar 2019 21:49:38 +0000 (14:49 -0700)
committerChris Wilson <chris@chris-wilson.co.uk>
Tue, 26 Mar 2019 20:16:45 +0000 (20:16 +0000)
The intel_uncore structure is the owner of register access, so
subclass the function to it.

While at it, use a local uncore var and switch to the new read/write
functions where it makes sense.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190325214940.23632-8-daniele.ceraolospurio@intel.com
drivers/gpu/drm/i915/i915_reset.c
drivers/gpu/drm/i915/intel_dpio_phy.c
drivers/gpu/drm/i915/intel_engine_cs.c
drivers/gpu/drm/i915/intel_guc.c
drivers/gpu/drm/i915/intel_huc_fw.c
drivers/gpu/drm/i915/intel_i2c.c
drivers/gpu/drm/i915/intel_pm.c
drivers/gpu/drm/i915/intel_ringbuffer.c
drivers/gpu/drm/i915/intel_uncore.c
drivers/gpu/drm/i915/intel_uncore.h

index 0aea19cefe4acd49adca68a3e729fe0ebfd28fb3..17f802a8f8f04ee077103f72a3424afad77e34d7 100644 (file)
@@ -245,10 +245,12 @@ static int ironlake_do_reset(struct drm_i915_private *dev_priv,
                             unsigned int engine_mask,
                             unsigned int retry)
 {
+       struct intel_uncore *uncore = &dev_priv->uncore;
        int ret;
 
-       I915_WRITE_FW(ILK_GDSR, ILK_GRDOM_RENDER | ILK_GRDOM_RESET_ENABLE);
-       ret = __intel_wait_for_register_fw(dev_priv, ILK_GDSR,
+       intel_uncore_write_fw(uncore, ILK_GDSR,
+                             ILK_GRDOM_RENDER | ILK_GRDOM_RESET_ENABLE);
+       ret = __intel_wait_for_register_fw(uncore, ILK_GDSR,
                                           ILK_GRDOM_RESET_ENABLE, 0,
                                           5000, 0,
                                           NULL);
@@ -257,8 +259,9 @@ static int ironlake_do_reset(struct drm_i915_private *dev_priv,
                goto out;
        }
 
-       I915_WRITE_FW(ILK_GDSR, ILK_GRDOM_MEDIA | ILK_GRDOM_RESET_ENABLE);
-       ret = __intel_wait_for_register_fw(dev_priv, ILK_GDSR,
+       intel_uncore_write_fw(uncore, ILK_GDSR,
+                             ILK_GRDOM_MEDIA | ILK_GRDOM_RESET_ENABLE);
+       ret = __intel_wait_for_register_fw(uncore, ILK_GDSR,
                                           ILK_GRDOM_RESET_ENABLE, 0,
                                           5000, 0,
                                           NULL);
@@ -268,8 +271,8 @@ static int ironlake_do_reset(struct drm_i915_private *dev_priv,
        }
 
 out:
-       I915_WRITE_FW(ILK_GDSR, 0);
-       POSTING_READ_FW(ILK_GDSR);
+       intel_uncore_write_fw(uncore, ILK_GDSR, 0);
+       intel_uncore_posting_read_fw(uncore, ILK_GDSR);
        return ret;
 }
 
@@ -277,6 +280,7 @@ static int ironlake_do_reset(struct drm_i915_private *dev_priv,
 static int gen6_hw_domain_reset(struct drm_i915_private *dev_priv,
                                u32 hw_domain_mask)
 {
+       struct intel_uncore *uncore = &dev_priv->uncore;
        int err;
 
        /*
@@ -284,10 +288,10 @@ static int gen6_hw_domain_reset(struct drm_i915_private *dev_priv,
         * for fifo space for the write or forcewake the chip for
         * the read
         */
-       I915_WRITE_FW(GEN6_GDRST, hw_domain_mask);
+       intel_uncore_write_fw(uncore, GEN6_GDRST, hw_domain_mask);
 
        /* Wait for the device to ack the reset requests */
-       err = __intel_wait_for_register_fw(dev_priv,
+       err = __intel_wait_for_register_fw(uncore,
                                           GEN6_GDRST, hw_domain_mask, 0,
                                           500, 0,
                                           NULL);
@@ -330,6 +334,7 @@ static int gen6_reset_engines(struct drm_i915_private *i915,
 static u32 gen11_lock_sfc(struct drm_i915_private *dev_priv,
                          struct intel_engine_cs *engine)
 {
+       struct intel_uncore *uncore = &dev_priv->uncore;
        u8 vdbox_sfc_access = RUNTIME_INFO(dev_priv)->vdbox_sfc_access;
        i915_reg_t sfc_forced_lock, sfc_forced_lock_ack;
        u32 sfc_forced_lock_bit, sfc_forced_lock_ack_bit;
@@ -377,10 +382,9 @@ static u32 gen11_lock_sfc(struct drm_i915_private *dev_priv,
         * ends up being locked to the engine we want to reset, we have to reset
         * it as well (we will unlock it once the reset sequence is completed).
         */
-       I915_WRITE_FW(sfc_forced_lock,
-                     I915_READ_FW(sfc_forced_lock) | sfc_forced_lock_bit);
+       intel_uncore_rmw_or_fw(uncore, sfc_forced_lock, sfc_forced_lock_bit);
 
-       if (__intel_wait_for_register_fw(dev_priv,
+       if (__intel_wait_for_register_fw(uncore,
                                         sfc_forced_lock_ack,
                                         sfc_forced_lock_ack_bit,
                                         sfc_forced_lock_ack_bit,
@@ -389,7 +393,7 @@ static u32 gen11_lock_sfc(struct drm_i915_private *dev_priv,
                return 0;
        }
 
-       if (I915_READ_FW(sfc_usage) & sfc_usage_bit)
+       if (intel_uncore_read_fw(uncore, sfc_usage) & sfc_usage_bit)
                return sfc_reset_bit;
 
        return 0;
@@ -465,13 +469,13 @@ static int gen11_reset_engines(struct drm_i915_private *i915,
 
 static int gen8_engine_reset_prepare(struct intel_engine_cs *engine)
 {
-       struct drm_i915_private *dev_priv = engine->i915;
+       struct intel_uncore *uncore = &engine->i915->uncore;
        int ret;
 
-       I915_WRITE_FW(RING_RESET_CTL(engine->mmio_base),
-                     _MASKED_BIT_ENABLE(RESET_CTL_REQUEST_RESET));
+       intel_uncore_write_fw(uncore, RING_RESET_CTL(engine->mmio_base),
+                             _MASKED_BIT_ENABLE(RESET_CTL_REQUEST_RESET));
 
-       ret = __intel_wait_for_register_fw(dev_priv,
+       ret = __intel_wait_for_register_fw(uncore,
                                           RING_RESET_CTL(engine->mmio_base),
                                           RESET_CTL_READY_TO_RESET,
                                           RESET_CTL_READY_TO_RESET,
index 95cb8b154f87938946b22d1f867ac43e38fe9c37..a0591b64070b75d910c747891dd882463e5236f7 100644 (file)
@@ -383,7 +383,8 @@ static void _bxt_ddi_phy_init(struct drm_i915_private *dev_priv,
         * The flag should get set in 100us according to the HW team, but
         * use 1ms due to occasional timeouts observed with that.
         */
-       if (intel_wait_for_register_fw(dev_priv, BXT_PORT_CL1CM_DW0(phy),
+       if (intel_wait_for_register_fw(&dev_priv->uncore,
+                                      BXT_PORT_CL1CM_DW0(phy),
                                       PHY_RESERVED | PHY_POWER_GOOD,
                                       PHY_POWER_GOOD,
                                       1))
index eb0fe9a58481bffb79e0874385bacf4dd538e64d..c936c6df34e474428465fd426fd021481953d4d7 100644 (file)
@@ -817,20 +817,20 @@ u64 intel_engine_get_last_batch_head(const struct intel_engine_cs *engine)
 
 int intel_engine_stop_cs(struct intel_engine_cs *engine)
 {
-       struct drm_i915_private *dev_priv = engine->i915;
+       struct intel_uncore *uncore = &engine->i915->uncore;
        const u32 base = engine->mmio_base;
        const i915_reg_t mode = RING_MI_MODE(base);
        int err;
 
-       if (INTEL_GEN(dev_priv) < 3)
+       if (INTEL_GEN(engine->i915) < 3)
                return -ENODEV;
 
        GEM_TRACE("%s\n", engine->name);
 
-       I915_WRITE_FW(mode, _MASKED_BIT_ENABLE(STOP_RING));
+       intel_uncore_write_fw(uncore, mode, _MASKED_BIT_ENABLE(STOP_RING));
 
        err = 0;
-       if (__intel_wait_for_register_fw(dev_priv,
+       if (__intel_wait_for_register_fw(uncore,
                                         mode, MODE_IDLE, MODE_IDLE,
                                         1000, 0,
                                         NULL)) {
@@ -839,7 +839,7 @@ int intel_engine_stop_cs(struct intel_engine_cs *engine)
        }
 
        /* A final mmio read to let GPU writes be hopefully flushed to memory */
-       POSTING_READ_FW(mode);
+       intel_uncore_posting_read_fw(uncore, mode);
 
        return err;
 }
index dcb88e7b79c40942e05f2aef829597d67ce2c294..fb9af193dbfc710837943a7bc8358601b3890e5c 100644 (file)
@@ -398,6 +398,7 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
                        u32 *response_buf, u32 response_buf_size)
 {
        struct drm_i915_private *dev_priv = guc_to_i915(guc);
+       struct intel_uncore *uncore = &dev_priv->uncore;
        u32 status;
        int i;
        int ret;
@@ -414,12 +415,12 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
                *action != INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER);
 
        mutex_lock(&guc->send_mutex);
-       intel_uncore_forcewake_get(&dev_priv->uncore, guc->send_regs.fw_domains);
+       intel_uncore_forcewake_get(uncore, guc->send_regs.fw_domains);
 
        for (i = 0; i < len; i++)
-               I915_WRITE(guc_send_reg(guc, i), action[i]);
+               intel_uncore_write(uncore, guc_send_reg(guc, i), action[i]);
 
-       POSTING_READ(guc_send_reg(guc, i - 1));
+       intel_uncore_posting_read(uncore, guc_send_reg(guc, i - 1));
 
        intel_guc_notify(guc);
 
@@ -427,7 +428,7 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
         * No GuC command should ever take longer than 10ms.
         * Fast commands should still complete in 10us.
         */
-       ret = __intel_wait_for_register_fw(dev_priv,
+       ret = __intel_wait_for_register_fw(uncore,
                                           guc_send_reg(guc, 0),
                                           INTEL_GUC_MSG_TYPE_MASK,
                                           INTEL_GUC_MSG_TYPE_RESPONSE <<
@@ -454,7 +455,7 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
        ret = INTEL_GUC_MSG_TO_DATA(status);
 
 out:
-       intel_uncore_forcewake_put(&dev_priv->uncore, guc->send_regs.fw_domains);
+       intel_uncore_forcewake_put(uncore, guc->send_regs.fw_domains);
        mutex_unlock(&guc->send_mutex);
 
        return ret;
index 92799b8502f516e54aa1ea474625bcde3375ae3b..68d47c10593921e2bd15d7245e71ab45ee850246 100644 (file)
@@ -106,41 +106,46 @@ static int huc_fw_xfer(struct intel_uc_fw *huc_fw, struct i915_vma *vma)
 {
        struct intel_huc *huc = container_of(huc_fw, struct intel_huc, fw);
        struct drm_i915_private *dev_priv = huc_to_i915(huc);
+       struct intel_uncore *uncore = &dev_priv->uncore;
        unsigned long offset = 0;
        u32 size;
        int ret;
 
        GEM_BUG_ON(huc_fw->type != INTEL_UC_FW_TYPE_HUC);
 
-       intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
+       intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
 
        /* Set the source address for the uCode */
        offset = intel_guc_ggtt_offset(&dev_priv->guc, vma) +
                 huc_fw->header_offset;
-       I915_WRITE(DMA_ADDR_0_LOW, lower_32_bits(offset));
-       I915_WRITE(DMA_ADDR_0_HIGH, upper_32_bits(offset) & 0xFFFF);
+       intel_uncore_write(uncore, DMA_ADDR_0_LOW,
+                          lower_32_bits(offset));
+       intel_uncore_write(uncore, DMA_ADDR_0_HIGH,
+                          upper_32_bits(offset) & 0xFFFF);
 
-       /* Hardware doesn't look at destination address for HuC. Set it to 0,
+       /*
+        * Hardware doesn't look at destination address for HuC. Set it to 0,
         * but still program the correct address space.
         */
-       I915_WRITE(DMA_ADDR_1_LOW, 0);
-       I915_WRITE(DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM);
+       intel_uncore_write(uncore, DMA_ADDR_1_LOW, 0);
+       intel_uncore_write(uncore, DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM);
 
        size = huc_fw->header_size + huc_fw->ucode_size;
-       I915_WRITE(DMA_COPY_SIZE, size);
+       intel_uncore_write(uncore, DMA_COPY_SIZE, size);
 
        /* Start the DMA */
-       I915_WRITE(DMA_CTRL, _MASKED_BIT_ENABLE(HUC_UKERNEL | START_DMA));
+       intel_uncore_write(uncore, DMA_CTRL,
+                          _MASKED_BIT_ENABLE(HUC_UKERNEL | START_DMA));
 
        /* Wait for DMA to finish */
-       ret = intel_wait_for_register_fw(dev_priv, DMA_CTRL, START_DMA, 0, 100);
+       ret = intel_wait_for_register_fw(uncore, DMA_CTRL, START_DMA, 0, 100);
 
        DRM_DEBUG_DRIVER("HuC DMA transfer wait over with ret %d\n", ret);
 
        /* Disable the bits once DMA is over */
-       I915_WRITE(DMA_CTRL, _MASKED_BIT_DISABLE(HUC_UKERNEL));
+       intel_uncore_write(uncore, DMA_CTRL, _MASKED_BIT_DISABLE(HUC_UKERNEL));
 
-       intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
+       intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
 
        return ret;
 }
index 5a733e711355bc66eb8f9a77649d1c51df303350..422685d120e942a71ad6c501919a19caad00beeb 100644 (file)
@@ -348,7 +348,7 @@ gmbus_wait_idle(struct drm_i915_private *dev_priv)
        add_wait_queue(&dev_priv->gmbus_wait_queue, &wait);
        I915_WRITE_FW(GMBUS4, irq_enable);
 
-       ret = intel_wait_for_register_fw(dev_priv,
+       ret = intel_wait_for_register_fw(&dev_priv->uncore,
                                         GMBUS2, GMBUS_ACTIVE, 0,
                                         10);
 
index e5e030f4f43f924da7f01fceb0d7b55f65a6fa1f..9a6eb2ef5f48672af4358d861bcd4ed3ab330987 100644 (file)
@@ -9687,7 +9687,7 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val
        I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
        I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
 
-       if (__intel_wait_for_register_fw(dev_priv,
+       if (__intel_wait_for_register_fw(&dev_priv->uncore,
                                         GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
                                         500, 0, NULL)) {
                DRM_ERROR("timeout waiting for pcode read (from mbox %x) to finish for %ps\n",
@@ -9735,7 +9735,7 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
        I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
        I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
 
-       if (__intel_wait_for_register_fw(dev_priv,
+       if (__intel_wait_for_register_fw(&dev_priv->uncore,
                                         GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
                                         fast_timeout_us, slow_timeout_ms,
                                         NULL)) {
index 359d6af1a0b95b1de194c841b52b6e541437650d..5103bada89002f84fdeed7c3dcfa0150c4357e0a 100644 (file)
@@ -2051,23 +2051,23 @@ int intel_ring_cacheline_align(struct i915_request *rq)
 
 static void gen6_bsd_submit_request(struct i915_request *request)
 {
-       struct drm_i915_private *dev_priv = request->i915;
+       struct intel_uncore *uncore = &request->i915->uncore;
 
-       intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
+       intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
 
        /* Every tail move must follow the sequence below */
 
        /* Disable notification that the ring is IDLE. The GT
         * will then assume that it is busy and bring it out of rc6.
         */
-       I915_WRITE_FW(GEN6_BSD_SLEEP_PSMI_CONTROL,
-                     _MASKED_BIT_ENABLE(GEN6_BSD_SLEEP_MSG_DISABLE));
+       intel_uncore_write_fw(uncore, GEN6_BSD_SLEEP_PSMI_CONTROL,
+                             _MASKED_BIT_ENABLE(GEN6_BSD_SLEEP_MSG_DISABLE));
 
        /* Clear the context id. Here be magic! */
-       I915_WRITE64_FW(GEN6_BSD_RNCID, 0x0);
+       intel_uncore_write64_fw(uncore, GEN6_BSD_RNCID, 0x0);
 
        /* Wait for the ring not to be idle, i.e. for it to wake up. */
-       if (__intel_wait_for_register_fw(dev_priv,
+       if (__intel_wait_for_register_fw(uncore,
                                         GEN6_BSD_SLEEP_PSMI_CONTROL,
                                         GEN6_BSD_SLEEP_INDICATOR,
                                         0,
@@ -2080,10 +2080,10 @@ static void gen6_bsd_submit_request(struct i915_request *request)
        /* Let the ring send IDLE messages to the GT again,
         * and so let it sleep to conserve power when idle.
         */
-       I915_WRITE_FW(GEN6_BSD_SLEEP_PSMI_CONTROL,
-                     _MASKED_BIT_DISABLE(GEN6_BSD_SLEEP_MSG_DISABLE));
+       intel_uncore_write_fw(uncore, GEN6_BSD_SLEEP_PSMI_CONTROL,
+                             _MASKED_BIT_DISABLE(GEN6_BSD_SLEEP_MSG_DISABLE));
 
-       intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
+       intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
 }
 
 static int mi_flush_dw(struct i915_request *rq, u32 flags)
index 8b7ef47faf2e4509522f160622bcd8c744d11edf..83a8ae5c8e75953cd7d1018dd6d7d90c7e3a669a 100644 (file)
@@ -1759,7 +1759,7 @@ int i915_reg_read_ioctl(struct drm_device *dev,
 
 /**
  * __intel_wait_for_register_fw - wait until register matches expected state
- * @dev_priv: the i915 device
+ * @uncore: the struct intel_uncore
  * @reg: the register to read
  * @mask: mask to apply to register value
  * @value: expected value
@@ -1783,7 +1783,7 @@ int i915_reg_read_ioctl(struct drm_device *dev,
  *
  * Returns 0 if the register matches the desired condition, or -ETIMEOUT.
  */
-int __intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
+int __intel_wait_for_register_fw(struct intel_uncore *uncore,
                                 i915_reg_t reg,
                                 u32 mask,
                                 u32 value,
@@ -1792,7 +1792,7 @@ int __intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
                                 u32 *out_value)
 {
        u32 uninitialized_var(reg_value);
-#define done (((reg_value = I915_READ_FW(reg)) & mask) == value)
+#define done (((reg_value = intel_uncore_read_fw(uncore, reg)) & mask) == value)
        int ret;
 
        /* Catch any overuse of this function */
@@ -1850,7 +1850,7 @@ int __intel_wait_for_register(struct drm_i915_private *dev_priv,
        spin_lock_irq(&uncore->lock);
        intel_uncore_forcewake_get__locked(uncore, fw);
 
-       ret = __intel_wait_for_register_fw(dev_priv,
+       ret = __intel_wait_for_register_fw(uncore,
                                           reg, mask, value,
                                           fast_timeout_us, 0, &reg_value);
 
@@ -1858,7 +1858,8 @@ int __intel_wait_for_register(struct drm_i915_private *dev_priv,
        spin_unlock_irq(&uncore->lock);
 
        if (ret && slow_timeout_ms)
-               ret = __wait_for(reg_value = I915_READ_NOTRACE(reg),
+               ret = __wait_for(reg_value = intel_uncore_read_notrace(uncore,
+                                                                      reg),
                                 (reg_value & mask) == value,
                                 slow_timeout_ms * 1000, 10, 1000);
 
index e3c2c37c51e2ee54d176b6c9173a7cf755276a1a..7d83fbd8fc2dbe4b579ea60bab0902ca291cde76 100644 (file)
@@ -220,31 +220,32 @@ int __intel_wait_for_register(struct drm_i915_private *dev_priv,
                              unsigned int fast_timeout_us,
                              unsigned int slow_timeout_ms,
                              u32 *out_value);
-static inline
-int intel_wait_for_register(struct drm_i915_private *dev_priv,
-                           i915_reg_t reg,
-                           u32 mask,
-                           u32 value,
-                           unsigned int timeout_ms)
+static inline int
+intel_wait_for_register(struct drm_i915_private *dev_priv,
+                       i915_reg_t reg,
+                       u32 mask,
+                       u32 value,
+                       unsigned int timeout_ms)
 {
        return __intel_wait_for_register(dev_priv, reg, mask, value, 2,
                                         timeout_ms, NULL);
 }
-int __intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
+
+int __intel_wait_for_register_fw(struct intel_uncore *uncore,
                                 i915_reg_t reg,
                                 u32 mask,
                                 u32 value,
                                 unsigned int fast_timeout_us,
                                 unsigned int slow_timeout_ms,
                                 u32 *out_value);
-static inline
-int intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
-                              i915_reg_t reg,
-                              u32 mask,
-                              u32 value,
+static inline int
+intel_wait_for_register_fw(struct intel_uncore *uncore,
+                          i915_reg_t reg,
+                          u32 mask,
+                          u32 value,
                               unsigned int timeout_ms)
 {
-       return __intel_wait_for_register_fw(dev_priv, reg, mask, value,
+       return __intel_wait_for_register_fw(uncore, reg, mask, value,
                                            2, timeout_ms, NULL);
 }
 
@@ -367,6 +368,13 @@ intel_uncore_read64_2x32(struct intel_uncore *uncore,
 #define intel_uncore_write64_fw(...) __raw_uncore_write64(__VA_ARGS__)
 #define intel_uncore_posting_read_fw(...) ((void)intel_uncore_read_fw(__VA_ARGS__))
 
+static inline void intel_uncore_rmw_or_fw(struct intel_uncore *uncore,
+                                         i915_reg_t reg, u32 or_val)
+{
+       intel_uncore_write_fw(uncore, reg,
+                             intel_uncore_read_fw(uncore, reg) | or_val);
+}
+
 #define raw_reg_read(base, reg) \
        readl(base + i915_mmio_reg_offset(reg))
 #define raw_reg_write(base, reg, value) \