From d8197317f172193b12fbaa75a653e7caa0614738 Mon Sep 17 00:00:00 2001
From: Kai Chen <kai.chen@intel.com>
Date: Tue, 23 May 2017 14:58:12 -0700
Subject: [PATCH] drm/i915: Remove decoupled MMIO code
Git-commit: d8197317f172193b12fbaa75a653e7caa0614738
Patch-mainline: v4.13-rc1
References: FATE#322643 bsc#1055900
This is a follow-up patch to the previous patch ([PATCH[1/2] drm/i915:
Disable decoupled MMIO) to remove the dead code for decoupled MMIO
implementation, as it won't be used any longer on GEN9LP.
Therefore, this patch reverts:
commit 85ee17ebeedd1af0dccd98f82ab4e644e29d84c0
Author: Praveen Paneri <praveen.paneri@intel.com>
Date: Tue Nov 15 22:49:20 2016 +0530
drm/i915/bxt: Broxton decoupled MMIO
Signed-off-by: Kai Chen <kai.chen@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170523215812.18328-3-kai.chen@intel.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/i915_drv.h | 3
drivers/gpu/drm/i915/i915_reg.h | 7 --
drivers/gpu/drm/i915/intel_uncore.c | 126 ------------------------------------
3 files changed, 136 deletions(-)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -752,7 +752,6 @@ struct intel_csr {
func(has_aliasing_ppgtt); \
func(has_csr); \
func(has_ddi); \
- func(has_decoupled_mmio); \
func(has_dp_mst); \
func(has_fbc); \
func(has_fpga_dbg); \
@@ -2996,8 +2995,6 @@ intel_info(const struct drm_i915_private
#define GT_FREQUENCY_MULTIPLIER 50
#define GEN9_FREQ_SCALER 3
-#define HAS_DECOUPLED_MMIO(dev_priv) (INTEL_INFO(dev_priv)->has_decoupled_mmio)
-
#include "i915_trace.h"
static inline bool intel_vtd_active(void)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7792,13 +7792,6 @@ enum {
#define SKL_FUSE_PG1_DIST_STATUS (1<<26)
#define SKL_FUSE_PG2_DIST_STATUS (1<<25)
-/* Decoupled MMIO register pair for kernel driver */
-#define GEN9_DECOUPLED_REG0_DW0 _MMIO(0xF00)
-#define GEN9_DECOUPLED_REG0_DW1 _MMIO(0xF04)
-#define GEN9_DECOUPLED_DW1_GO (1<<31)
-#define GEN9_DECOUPLED_PD_SHIFT 28
-#define GEN9_DECOUPLED_OP_SHIFT 24
-
/* Per-pipe DDI Function Control */
#define _TRANS_DDI_FUNC_CTL_A 0x60400
#define _TRANS_DDI_FUNC_CTL_B 0x61400
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -404,8 +404,6 @@ check_for_unclaimed_mmio(struct drm_i915
static void __intel_uncore_early_sanitize(struct drm_i915_private *dev_priv,
bool restore_forcewake)
{
- struct intel_device_info *info = mkwrite_device_info(dev_priv);
-
/* clear out unclaimed reg detection bit */
if (check_for_unclaimed_mmio(dev_priv))
DRM_DEBUG("unclaimed mmio detected on uncore init, clearing\n");
@@ -418,9 +416,6 @@ static void __intel_uncore_early_sanitiz
GT_FIFO_CTL_RC6_POLICY_STALL);
}
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_B_LAST))
- info->has_decoupled_mmio = false;
-
intel_uncore_forcewake_reset(dev_priv, restore_forcewake);
}
@@ -810,78 +805,6 @@ unclaimed_reg_debug(struct drm_i915_priv
__unclaimed_reg_debug(dev_priv, reg, read, before);
}
-enum decoupled_power_domain {
- GEN9_DECOUPLED_PD_BLITTER = 0,
- GEN9_DECOUPLED_PD_RENDER,
- GEN9_DECOUPLED_PD_MEDIA,
- GEN9_DECOUPLED_PD_ALL
-};
-
-enum decoupled_ops {
- GEN9_DECOUPLED_OP_WRITE = 0,
- GEN9_DECOUPLED_OP_READ
-};
-
-static const enum decoupled_power_domain fw2dpd_domain[] = {
- GEN9_DECOUPLED_PD_RENDER,
- GEN9_DECOUPLED_PD_BLITTER,
- GEN9_DECOUPLED_PD_ALL,
- GEN9_DECOUPLED_PD_MEDIA,
- GEN9_DECOUPLED_PD_ALL,
- GEN9_DECOUPLED_PD_ALL,
- GEN9_DECOUPLED_PD_ALL
-};
-
-/*
- * Decoupled MMIO access for only 1 DWORD
- */
-static void __gen9_decoupled_mmio_access(struct drm_i915_private *dev_priv,
- u32 reg,
- enum forcewake_domains fw_domain,
- enum decoupled_ops operation)
-{
- enum decoupled_power_domain dp_domain;
- u32 ctrl_reg_data = 0;
-
- dp_domain = fw2dpd_domain[fw_domain - 1];
-
- ctrl_reg_data |= reg;
- ctrl_reg_data |= (operation << GEN9_DECOUPLED_OP_SHIFT);
- ctrl_reg_data |= (dp_domain << GEN9_DECOUPLED_PD_SHIFT);
- ctrl_reg_data |= GEN9_DECOUPLED_DW1_GO;
- __raw_i915_write32(dev_priv, GEN9_DECOUPLED_REG0_DW1, ctrl_reg_data);
-
- if (wait_for_atomic((__raw_i915_read32(dev_priv,
- GEN9_DECOUPLED_REG0_DW1) &
- GEN9_DECOUPLED_DW1_GO) == 0,
- FORCEWAKE_ACK_TIMEOUT_MS))
- DRM_ERROR("Decoupled MMIO wait timed out\n");
-}
-
-static inline u32
-__gen9_decoupled_mmio_read32(struct drm_i915_private *dev_priv,
- u32 reg,
- enum forcewake_domains fw_domain)
-{
- __gen9_decoupled_mmio_access(dev_priv, reg, fw_domain,
- GEN9_DECOUPLED_OP_READ);
-
- return __raw_i915_read32(dev_priv, GEN9_DECOUPLED_REG0_DW0);
-}
-
-static inline void
-__gen9_decoupled_mmio_write(struct drm_i915_private *dev_priv,
- u32 reg, u32 data,
- enum forcewake_domains fw_domain)
-{
-
- __raw_i915_write32(dev_priv, GEN9_DECOUPLED_REG0_DW0, data);
-
- __gen9_decoupled_mmio_access(dev_priv, reg, fw_domain,
- GEN9_DECOUPLED_OP_WRITE);
-}
-
-
#define GEN2_READ_HEADER(x) \
u##x val = 0; \
assert_rpm_wakelock_held(dev_priv);
@@ -978,28 +901,6 @@ func##_read##x(struct drm_i915_private *
#define __gen6_read(x) __gen_read(gen6, x)
#define __fwtable_read(x) __gen_read(fwtable, x)
-#define __gen9_decoupled_read(x) \
-static u##x \
-gen9_decoupled_read##x(struct drm_i915_private *dev_priv, \
- i915_reg_t reg, bool trace) { \
- enum forcewake_domains fw_engine; \
- GEN6_READ_HEADER(x); \
- fw_engine = __fwtable_reg_read_fw_domains(offset); \
- if (fw_engine & ~dev_priv->uncore.fw_domains_active) { \
- unsigned i; \
- u32 *ptr_data = (u32 *) &val; \
- for (i = 0; i < x/32; i++, offset += sizeof(u32), ptr_data++) \
- *ptr_data = __gen9_decoupled_mmio_read32(dev_priv, \
- offset, \
- fw_engine); \
- } else { \
- val = __raw_i915_read##x(dev_priv, reg); \
- } \
- GEN6_READ_FOOTER; \
-}
-
-__gen9_decoupled_read(32)
-__gen9_decoupled_read(64)
__fwtable_read(8)
__fwtable_read(16)
__fwtable_read(32)
@@ -1086,25 +987,6 @@ func##_write##x(struct drm_i915_private
#define __gen8_write(x) __gen_write(gen8, x)
#define __fwtable_write(x) __gen_write(fwtable, x)
-#define __gen9_decoupled_write(x) \
-static void \
-gen9_decoupled_write##x(struct drm_i915_private *dev_priv, \
- i915_reg_t reg, u##x val, \
- bool trace) { \
- enum forcewake_domains fw_engine; \
- GEN6_WRITE_HEADER; \
- fw_engine = __fwtable_reg_write_fw_domains(offset); \
- if (fw_engine & ~dev_priv->uncore.fw_domains_active) \
- __gen9_decoupled_mmio_write(dev_priv, \
- offset, \
- val, \
- fw_engine); \
- else \
- __raw_i915_write##x(dev_priv, reg, val); \
- GEN6_WRITE_FOOTER; \
-}
-
-__gen9_decoupled_write(32)
__fwtable_write(8)
__fwtable_write(16)
__fwtable_write(32)
@@ -1341,14 +1223,6 @@ void intel_uncore_init(struct drm_i915_p
ASSIGN_FW_DOMAINS_TABLE(__gen9_fw_ranges);
ASSIGN_WRITE_MMIO_VFUNCS(dev_priv, fwtable);
ASSIGN_READ_MMIO_VFUNCS(dev_priv, fwtable);
- if (HAS_DECOUPLED_MMIO(dev_priv)) {
- dev_priv->uncore.funcs.mmio_readl =
- gen9_decoupled_read32;
- dev_priv->uncore.funcs.mmio_readq =
- gen9_decoupled_read64;
- dev_priv->uncore.funcs.mmio_writel =
- gen9_decoupled_write32;
- }
}
iosf_mbi_register_pmic_bus_access_notifier(