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Subject[PATCH v3] radeon: Deinline indirect register accessor functions
Date
This patch deinlines indirect register accessor functions.

These functions perform two mmio accesses, framed by spin lock/unlock.
Spin lock/unlock by itself takes more than 50 cycles in ideal case
(if lock is exclusively cached on current CPU).

With this .config: http://busybox.net/~vda/kernel_config,
after uninlining these functions have sizes and callsite counts
as follows:

r600_uvd_ctx_rreg: 111 bytes, 4 callsites
r600_uvd_ctx_wreg: 113 bytes, 5 callsites
eg_pif_phy0_rreg: 106 bytes, 13 callsites
eg_pif_phy0_wreg: 108 bytes, 13 callsites
eg_pif_phy1_rreg: 107 bytes, 13 callsites
eg_pif_phy1_wreg: 108 bytes, 13 callsites
rv370_pcie_rreg: 111 bytes, 21 callsites
rv370_pcie_wreg: 113 bytes, 24 callsites
r600_rcu_rreg: 111 bytes, 16 callsites
r600_rcu_wreg: 113 bytes, 25 callsites
cik_didt_rreg: 106 bytes, 10 callsites
cik_didt_wreg: 107 bytes, 10 callsites
tn_smc_rreg: 106 bytes, 126 callsites
tn_smc_wreg: 107 bytes, 116 callsites
eg_cg_rreg: 107 bytes, 20 callsites
eg_cg_wreg: 108 bytes, 52 callsites

Functions r100_mm_rreg() and r100_mm_rreg() have a fast path and
a locked (slow) path. This patch deinlines only slow path.

r100_mm_rreg_slow: 78 bytes, 2083 callsites
r100_mm_wreg_slow: 81 bytes, 3570 callsites

Reduction in code size is more than 65,000 bytes:

text data bss dec hex filename
85740176 22294680 20627456 128662312 7ab3b28 vmlinux.before
85674192 22294776 20627456 128598664 7aa4288 vmlinux

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: linux-kernel@vger.kernel.org
---
Changes in v2: only partially deinline r100_mm_r/wreg

Changes in v3: move deinlined functions into files which correspond to
particular hw. Explain why these functions aren't inlined.

drivers/gpu/drm/radeon/cik.c | 25 +++++
drivers/gpu/drm/radeon/evergreen.c | 69 ++++++++++++
drivers/gpu/drm/radeon/ni.c | 25 +++++
drivers/gpu/drm/radeon/r100.c | 22 ++++
drivers/gpu/drm/radeon/r300.c | 25 +++++
drivers/gpu/drm/radeon/r600.c | 47 ++++++++
drivers/gpu/drm/radeon/radeon.h | 225 +++++--------------------------------
7 files changed, 241 insertions(+), 197 deletions(-)

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 3e670d3..7fe99ce 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -141,6 +141,31 @@ static void cik_fini_cg(struct radeon_device *rdev);
static void cik_enable_gui_idle_interrupt(struct radeon_device *rdev,
bool enable);

+/*
+ * Indirect registers accessor
+ */
+u32 cik_didt_rreg(struct radeon_device *rdev, u32 reg)
+{
+ unsigned long flags;
+ u32 r;
+
+ spin_lock_irqsave(&rdev->didt_idx_lock, flags);
+ WREG32(CIK_DIDT_IND_INDEX, (reg));
+ r = RREG32(CIK_DIDT_IND_DATA);
+ spin_unlock_irqrestore(&rdev->didt_idx_lock, flags);
+ return r;
+}
+
+void cik_didt_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->didt_idx_lock, flags);
+ WREG32(CIK_DIDT_IND_INDEX, (reg));
+ WREG32(CIK_DIDT_IND_DATA, (v));
+ spin_unlock_irqrestore(&rdev->didt_idx_lock, flags);
+}
+
/* get temperature in millidegrees */
int ci_get_temp(struct radeon_device *rdev)
{
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 973df06..1e78c1f 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -35,6 +35,75 @@
#include "evergreen_blit_shaders.h"
#include "radeon_ucode.h"

+/*
+ * Indirect registers accessor
+ */
+u32 eg_cg_rreg(struct radeon_device *rdev, u32 reg)
+{
+ unsigned long flags;
+ u32 r;
+
+ spin_lock_irqsave(&rdev->cg_idx_lock, flags);
+ WREG32(EVERGREEN_CG_IND_ADDR, ((reg) & 0xffff));
+ r = RREG32(EVERGREEN_CG_IND_DATA);
+ spin_unlock_irqrestore(&rdev->cg_idx_lock, flags);
+ return r;
+}
+
+void eg_cg_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->cg_idx_lock, flags);
+ WREG32(EVERGREEN_CG_IND_ADDR, ((reg) & 0xffff));
+ WREG32(EVERGREEN_CG_IND_DATA, (v));
+ spin_unlock_irqrestore(&rdev->cg_idx_lock, flags);
+}
+
+u32 eg_pif_phy0_rreg(struct radeon_device *rdev, u32 reg)
+{
+ unsigned long flags;
+ u32 r;
+
+ spin_lock_irqsave(&rdev->pif_idx_lock, flags);
+ WREG32(EVERGREEN_PIF_PHY0_INDEX, ((reg) & 0xffff));
+ r = RREG32(EVERGREEN_PIF_PHY0_DATA);
+ spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
+ return r;
+}
+
+void eg_pif_phy0_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->pif_idx_lock, flags);
+ WREG32(EVERGREEN_PIF_PHY0_INDEX, ((reg) & 0xffff));
+ WREG32(EVERGREEN_PIF_PHY0_DATA, (v));
+ spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
+}
+
+u32 eg_pif_phy1_rreg(struct radeon_device *rdev, u32 reg)
+{
+ unsigned long flags;
+ u32 r;
+
+ spin_lock_irqsave(&rdev->pif_idx_lock, flags);
+ WREG32(EVERGREEN_PIF_PHY1_INDEX, ((reg) & 0xffff));
+ r = RREG32(EVERGREEN_PIF_PHY1_DATA);
+ spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
+ return r;
+}
+
+void eg_pif_phy1_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->pif_idx_lock, flags);
+ WREG32(EVERGREEN_PIF_PHY1_INDEX, ((reg) & 0xffff));
+ WREG32(EVERGREEN_PIF_PHY1_DATA, (v));
+ spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
+}
+
static const u32 crtc_offsets[6] =
{
EVERGREEN_CRTC0_REGISTER_OFFSET,
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index dab0081..e9bf710 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -36,6 +36,31 @@
#include "radeon_ucode.h"
#include "clearstate_cayman.h"

+/*
+ * Indirect registers accessor
+ */
+u32 tn_smc_rreg(struct radeon_device *rdev, u32 reg)
+{
+ unsigned long flags;
+ u32 r;
+
+ spin_lock_irqsave(&rdev->smc_idx_lock, flags);
+ WREG32(TN_SMC_IND_INDEX_0, (reg));
+ r = RREG32(TN_SMC_IND_DATA_0);
+ spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
+ return r;
+}
+
+void tn_smc_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->smc_idx_lock, flags);
+ WREG32(TN_SMC_IND_INDEX_0, (reg));
+ WREG32(TN_SMC_IND_DATA_0, (v));
+ spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
+}
+
static const u32 tn_rlc_save_restore_register_list[] =
{
0x98fc,
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 04f2514..238b13f 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -4090,6 +4090,28 @@ int r100_init(struct radeon_device *rdev)
return 0;
}

+uint32_t r100_mm_rreg_slow(struct radeon_device *rdev, uint32_t reg)
+{
+ unsigned long flags;
+ uint32_t ret;
+
+ spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
+ writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX);
+ ret = readl(((void __iomem *)rdev->rmmio) + RADEON_MM_DATA);
+ spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
+ return ret;
+}
+
+void r100_mm_wreg_slow(struct radeon_device *rdev, uint32_t reg, uint32_t v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
+ writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX);
+ writel(v, ((void __iomem *)rdev->rmmio) + RADEON_MM_DATA);
+ spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
+}
+
u32 r100_io_rreg(struct radeon_device *rdev, u32 reg)
{
if (reg < rdev->rio_mem_size)
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 08d68f3..718b12b 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -50,6 +50,31 @@
*/

/*
+ * Indirect registers accessor
+ */
+uint32_t rv370_pcie_rreg(struct radeon_device *rdev, uint32_t reg)
+{
+ unsigned long flags;
+ uint32_t r;
+
+ spin_lock_irqsave(&rdev->pcie_idx_lock, flags);
+ WREG32(RADEON_PCIE_INDEX, ((reg) & rdev->pcie_reg_mask));
+ r = RREG32(RADEON_PCIE_DATA);
+ spin_unlock_irqrestore(&rdev->pcie_idx_lock, flags);
+ return r;
+}
+
+void rv370_pcie_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->pcie_idx_lock, flags);
+ WREG32(RADEON_PCIE_INDEX, ((reg) & rdev->pcie_reg_mask));
+ WREG32(RADEON_PCIE_DATA, (v));
+ spin_unlock_irqrestore(&rdev->pcie_idx_lock, flags);
+}
+
+/*
* rv370,rv380 PCIE GART
*/
static int rv370_debugfs_pcie_gart_info_init(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 2fcad34..b667409 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -108,6 +108,53 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev);
extern int evergreen_rlc_resume(struct radeon_device *rdev);
extern void rv770_set_clk_bypass_mode(struct radeon_device *rdev);

+/*
+ * Indirect registers accessor
+ */
+u32 r600_rcu_rreg(struct radeon_device *rdev, u32 reg)
+{
+ unsigned long flags;
+ u32 r;
+
+ spin_lock_irqsave(&rdev->rcu_idx_lock, flags);
+ WREG32(R600_RCU_INDEX, ((reg) & 0x1fff));
+ r = RREG32(R600_RCU_DATA);
+ spin_unlock_irqrestore(&rdev->rcu_idx_lock, flags);
+ return r;
+}
+
+void r600_rcu_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->rcu_idx_lock, flags);
+ WREG32(R600_RCU_INDEX, ((reg) & 0x1fff));
+ WREG32(R600_RCU_DATA, (v));
+ spin_unlock_irqrestore(&rdev->rcu_idx_lock, flags);
+}
+
+u32 r600_uvd_ctx_rreg(struct radeon_device *rdev, u32 reg)
+{
+ unsigned long flags;
+ u32 r;
+
+ spin_lock_irqsave(&rdev->uvd_idx_lock, flags);
+ WREG32(R600_UVD_CTX_INDEX, ((reg) & 0x1ff));
+ r = RREG32(R600_UVD_CTX_DATA);
+ spin_unlock_irqrestore(&rdev->uvd_idx_lock, flags);
+ return r;
+}
+
+void r600_uvd_ctx_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->uvd_idx_lock, flags);
+ WREG32(R600_UVD_CTX_INDEX, ((reg) & 0x1ff));
+ WREG32(R600_UVD_CTX_DATA, (v));
+ spin_unlock_irqrestore(&rdev->uvd_idx_lock, flags);
+}
+
/**
* r600_get_xclk - get the xclk
*
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 5587603..ffc621b 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2465,38 +2465,24 @@ int radeon_gpu_wait_for_idle(struct radeon_device *rdev);

#define RADEON_MIN_MMIO_SIZE 0x10000

+uint32_t r100_mm_rreg_slow(struct radeon_device *rdev, uint32_t reg);
+void r100_mm_wreg_slow(struct radeon_device *rdev, uint32_t reg, uint32_t v);
static inline uint32_t r100_mm_rreg(struct radeon_device *rdev, uint32_t reg,
bool always_indirect)
{
/* The mmio size is 64kb at minimum. Allows the if to be optimized out. */
if ((reg < rdev->rmmio_size || reg < RADEON_MIN_MMIO_SIZE) && !always_indirect)
return readl(((void __iomem *)rdev->rmmio) + reg);
- else {
- unsigned long flags;
- uint32_t ret;
-
- spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
- writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX);
- ret = readl(((void __iomem *)rdev->rmmio) + RADEON_MM_DATA);
- spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
-
- return ret;
- }
+ else
+ return r100_mm_rreg_slow(rdev, reg);
}
-
static inline void r100_mm_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v,
bool always_indirect)
{
if ((reg < rdev->rmmio_size || reg < RADEON_MIN_MMIO_SIZE) && !always_indirect)
writel(v, ((void __iomem *)rdev->rmmio) + reg);
- else {
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
- writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX);
- writel(v, ((void __iomem *)rdev->rmmio) + RADEON_MM_DATA);
- spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
- }
+ else
+ r100_mm_wreg_slow(rdev, reg, v);
}

u32 r100_io_rreg(struct radeon_device *rdev, u32 reg);
@@ -2580,184 +2566,29 @@ static inline struct radeon_fence *to_radeon_fence(struct fence *f)
#define WDOORBELL32(index, v) cik_mm_wdoorbell(rdev, (index), (v))

/*
- * Indirect registers accessor
+ * Indirect registers accessors.
+ * They used to be inlined, but this increases code size by ~65 kbytes.
+ * Since each performs a pair of MMIO ops
+ * within a spin_lock_irqsave/spin_unlock_irqrestore region,
+ * the cost of call+ret is almost negligible. MMIO and locking
+ * costs several dozens of cycles each at best, call+ret is ~5 cycles.
*/
-static inline uint32_t rv370_pcie_rreg(struct radeon_device *rdev, uint32_t reg)
-{
- unsigned long flags;
- uint32_t r;
-
- spin_lock_irqsave(&rdev->pcie_idx_lock, flags);
- WREG32(RADEON_PCIE_INDEX, ((reg) & rdev->pcie_reg_mask));
- r = RREG32(RADEON_PCIE_DATA);
- spin_unlock_irqrestore(&rdev->pcie_idx_lock, flags);
- return r;
-}
-
-static inline void rv370_pcie_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->pcie_idx_lock, flags);
- WREG32(RADEON_PCIE_INDEX, ((reg) & rdev->pcie_reg_mask));
- WREG32(RADEON_PCIE_DATA, (v));
- spin_unlock_irqrestore(&rdev->pcie_idx_lock, flags);
-}
-
-static inline u32 tn_smc_rreg(struct radeon_device *rdev, u32 reg)
-{
- unsigned long flags;
- u32 r;
-
- spin_lock_irqsave(&rdev->smc_idx_lock, flags);
- WREG32(TN_SMC_IND_INDEX_0, (reg));
- r = RREG32(TN_SMC_IND_DATA_0);
- spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
- return r;
-}
-
-static inline void tn_smc_wreg(struct radeon_device *rdev, u32 reg, u32 v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->smc_idx_lock, flags);
- WREG32(TN_SMC_IND_INDEX_0, (reg));
- WREG32(TN_SMC_IND_DATA_0, (v));
- spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
-}
-
-static inline u32 r600_rcu_rreg(struct radeon_device *rdev, u32 reg)
-{
- unsigned long flags;
- u32 r;
-
- spin_lock_irqsave(&rdev->rcu_idx_lock, flags);
- WREG32(R600_RCU_INDEX, ((reg) & 0x1fff));
- r = RREG32(R600_RCU_DATA);
- spin_unlock_irqrestore(&rdev->rcu_idx_lock, flags);
- return r;
-}
-
-static inline void r600_rcu_wreg(struct radeon_device *rdev, u32 reg, u32 v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->rcu_idx_lock, flags);
- WREG32(R600_RCU_INDEX, ((reg) & 0x1fff));
- WREG32(R600_RCU_DATA, (v));
- spin_unlock_irqrestore(&rdev->rcu_idx_lock, flags);
-}
-
-static inline u32 eg_cg_rreg(struct radeon_device *rdev, u32 reg)
-{
- unsigned long flags;
- u32 r;
-
- spin_lock_irqsave(&rdev->cg_idx_lock, flags);
- WREG32(EVERGREEN_CG_IND_ADDR, ((reg) & 0xffff));
- r = RREG32(EVERGREEN_CG_IND_DATA);
- spin_unlock_irqrestore(&rdev->cg_idx_lock, flags);
- return r;
-}
-
-static inline void eg_cg_wreg(struct radeon_device *rdev, u32 reg, u32 v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->cg_idx_lock, flags);
- WREG32(EVERGREEN_CG_IND_ADDR, ((reg) & 0xffff));
- WREG32(EVERGREEN_CG_IND_DATA, (v));
- spin_unlock_irqrestore(&rdev->cg_idx_lock, flags);
-}
-
-static inline u32 eg_pif_phy0_rreg(struct radeon_device *rdev, u32 reg)
-{
- unsigned long flags;
- u32 r;
-
- spin_lock_irqsave(&rdev->pif_idx_lock, flags);
- WREG32(EVERGREEN_PIF_PHY0_INDEX, ((reg) & 0xffff));
- r = RREG32(EVERGREEN_PIF_PHY0_DATA);
- spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
- return r;
-}
-
-static inline void eg_pif_phy0_wreg(struct radeon_device *rdev, u32 reg, u32 v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->pif_idx_lock, flags);
- WREG32(EVERGREEN_PIF_PHY0_INDEX, ((reg) & 0xffff));
- WREG32(EVERGREEN_PIF_PHY0_DATA, (v));
- spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
-}
-
-static inline u32 eg_pif_phy1_rreg(struct radeon_device *rdev, u32 reg)
-{
- unsigned long flags;
- u32 r;
-
- spin_lock_irqsave(&rdev->pif_idx_lock, flags);
- WREG32(EVERGREEN_PIF_PHY1_INDEX, ((reg) & 0xffff));
- r = RREG32(EVERGREEN_PIF_PHY1_DATA);
- spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
- return r;
-}
-
-static inline void eg_pif_phy1_wreg(struct radeon_device *rdev, u32 reg, u32 v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->pif_idx_lock, flags);
- WREG32(EVERGREEN_PIF_PHY1_INDEX, ((reg) & 0xffff));
- WREG32(EVERGREEN_PIF_PHY1_DATA, (v));
- spin_unlock_irqrestore(&rdev->pif_idx_lock, flags);
-}
-
-static inline u32 r600_uvd_ctx_rreg(struct radeon_device *rdev, u32 reg)
-{
- unsigned long flags;
- u32 r;
-
- spin_lock_irqsave(&rdev->uvd_idx_lock, flags);
- WREG32(R600_UVD_CTX_INDEX, ((reg) & 0x1ff));
- r = RREG32(R600_UVD_CTX_DATA);
- spin_unlock_irqrestore(&rdev->uvd_idx_lock, flags);
- return r;
-}
-
-static inline void r600_uvd_ctx_wreg(struct radeon_device *rdev, u32 reg, u32 v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->uvd_idx_lock, flags);
- WREG32(R600_UVD_CTX_INDEX, ((reg) & 0x1ff));
- WREG32(R600_UVD_CTX_DATA, (v));
- spin_unlock_irqrestore(&rdev->uvd_idx_lock, flags);
-}
-
-
-static inline u32 cik_didt_rreg(struct radeon_device *rdev, u32 reg)
-{
- unsigned long flags;
- u32 r;
-
- spin_lock_irqsave(&rdev->didt_idx_lock, flags);
- WREG32(CIK_DIDT_IND_INDEX, (reg));
- r = RREG32(CIK_DIDT_IND_DATA);
- spin_unlock_irqrestore(&rdev->didt_idx_lock, flags);
- return r;
-}
-
-static inline void cik_didt_wreg(struct radeon_device *rdev, u32 reg, u32 v)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rdev->didt_idx_lock, flags);
- WREG32(CIK_DIDT_IND_INDEX, (reg));
- WREG32(CIK_DIDT_IND_DATA, (v));
- spin_unlock_irqrestore(&rdev->didt_idx_lock, flags);
-}
+uint32_t rv370_pcie_rreg(struct radeon_device *rdev, uint32_t reg);
+void rv370_pcie_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v);
+u32 tn_smc_rreg(struct radeon_device *rdev, u32 reg);
+void tn_smc_wreg(struct radeon_device *rdev, u32 reg, u32 v);
+u32 r600_rcu_rreg(struct radeon_device *rdev, u32 reg);
+void r600_rcu_wreg(struct radeon_device *rdev, u32 reg, u32 v);
+u32 eg_cg_rreg(struct radeon_device *rdev, u32 reg);
+void eg_cg_wreg(struct radeon_device *rdev, u32 reg, u32 v);
+u32 eg_pif_phy0_rreg(struct radeon_device *rdev, u32 reg);
+void eg_pif_phy0_wreg(struct radeon_device *rdev, u32 reg, u32 v);
+u32 eg_pif_phy1_rreg(struct radeon_device *rdev, u32 reg);
+void eg_pif_phy1_wreg(struct radeon_device *rdev, u32 reg, u32 v);
+u32 r600_uvd_ctx_rreg(struct radeon_device *rdev, u32 reg);
+void r600_uvd_ctx_wreg(struct radeon_device *rdev, u32 reg, u32 v);
+u32 cik_didt_rreg(struct radeon_device *rdev, u32 reg);
+void cik_didt_wreg(struct radeon_device *rdev, u32 reg, u32 v);

void r100_pll_errata_after_index(struct radeon_device *rdev);

--
1.8.1.4


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