From 86700a402694db56030a74481d09f35520332736 Mon Sep 17 00:00:00 2001 From: Xiaojian Du Date: Tue, 18 Jan 2022 17:18:13 +0800 Subject: [PATCH] drm/amdgpu: modify a pair of functions for the pcie port wreg/rreg This patch will modify a pair of functions for pcie port wreg/rreg. AMD GPU have had an independent NBIO block from SOC15 arch. If the dirver wants to read/write the address space of the pcie devices, it has to go through the NBIO block. This patch will move the pcie port wreg/rreg functions to "amdgpu_device.c", so that to reuse the functions on the future GPU ASICs. Signed-off-by: Xiaojian Du Reviewed-by: Huang Rui Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 4 ++++ drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 33 +++++++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/nv.c | 34 ++---------------------------- 3 files changed, 39 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 8ddddf1..8658312 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1315,6 +1315,10 @@ void amdgpu_device_invalidate_hdp(struct amdgpu_device *adev, struct amdgpu_ring *ring); void amdgpu_device_halt(struct amdgpu_device *adev); +u32 amdgpu_device_pcie_port_rreg(struct amdgpu_device *adev, + u32 reg); +void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev, + u32 reg, u32 v); /* atpx handler */ #if defined(CONFIG_VGA_SWITCHEROO) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index f0c0752..fcde99c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -5728,3 +5728,36 @@ void amdgpu_device_halt(struct amdgpu_device *adev) pci_disable_device(pdev); pci_wait_for_pending_transaction(pdev); } + +u32 amdgpu_device_pcie_port_rreg(struct amdgpu_device *adev, + u32 reg) +{ + unsigned long flags, address, data; + u32 r; + + address = adev->nbio.funcs->get_pcie_port_index_offset(adev); + data = adev->nbio.funcs->get_pcie_port_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + WREG32(address, reg * 4); + (void)RREG32(address); + r = RREG32(data); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); + return r; +} + +void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev, + u32 reg, u32 v) +{ + unsigned long flags, address, data; + + address = adev->nbio.funcs->get_pcie_port_index_offset(adev); + data = adev->nbio.funcs->get_pcie_port_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + WREG32(address, reg * 4); + (void)RREG32(address); + WREG32(data, v); + (void)RREG32(data); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); +} diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c index 2ec1ffb..8f0c92c 100644 --- a/drivers/gpu/drm/amd/amdgpu/nv.c +++ b/drivers/gpu/drm/amd/amdgpu/nv.c @@ -258,21 +258,6 @@ static u64 nv_pcie_rreg64(struct amdgpu_device *adev, u32 reg) return amdgpu_device_indirect_rreg64(adev, address, data, reg); } -static u32 nv_pcie_port_rreg(struct amdgpu_device *adev, u32 reg) -{ - unsigned long flags, address, data; - u32 r; - address = adev->nbio.funcs->get_pcie_port_index_offset(adev); - data = adev->nbio.funcs->get_pcie_port_data_offset(adev); - - spin_lock_irqsave(&adev->pcie_idx_lock, flags); - WREG32(address, reg * 4); - (void)RREG32(address); - r = RREG32(data); - spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); - return r; -} - static void nv_pcie_wreg64(struct amdgpu_device *adev, u32 reg, u64 v) { unsigned long address, data; @@ -283,21 +268,6 @@ static void nv_pcie_wreg64(struct amdgpu_device *adev, u32 reg, u64 v) amdgpu_device_indirect_wreg64(adev, address, data, reg, v); } -static void nv_pcie_port_wreg(struct amdgpu_device *adev, u32 reg, u32 v) -{ - unsigned long flags, address, data; - - address = adev->nbio.funcs->get_pcie_port_index_offset(adev); - data = adev->nbio.funcs->get_pcie_port_data_offset(adev); - - spin_lock_irqsave(&adev->pcie_idx_lock, flags); - WREG32(address, reg * 4); - (void)RREG32(address); - WREG32(data, v); - (void)RREG32(data); - spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); -} - static u32 nv_didt_rreg(struct amdgpu_device *adev, u32 reg) { unsigned long flags, address, data; @@ -742,8 +712,8 @@ static int nv_common_early_init(void *handle) adev->pcie_wreg = &nv_pcie_wreg; adev->pcie_rreg64 = &nv_pcie_rreg64; adev->pcie_wreg64 = &nv_pcie_wreg64; - adev->pciep_rreg = &nv_pcie_port_rreg; - adev->pciep_wreg = &nv_pcie_port_wreg; + adev->pciep_rreg = amdgpu_device_pcie_port_rreg; + adev->pciep_wreg = amdgpu_device_pcie_port_wreg; /* TODO: will add them during VCN v2 implementation */ adev->uvd_ctx_rreg = NULL; -- 2.7.4