From e99d2eaafd8e3b90b2ef5bf9ff453ba31dc6b312 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 15 Mar 2021 11:14:40 -0400
Subject: drm/amdgpu: drop legacy IO bar support
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It was leftover from radeon where it was required for some
specific old hardware. It hasn't been required for ages
and the driver already falls back to MMIO when legacy IO
is not available. Legacy IO also seems to be problematic on
on some thunderbolt devices. Drop it.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 43 ----------------------------
1 file changed, 43 deletions(-)
(limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c')
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 86add0f4ea4d..e05648a8a145 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -1905,40 +1905,6 @@ static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
return r;
}
-/**
- * cail_ioreg_write - write IO register
- *
- * @info: atom card_info pointer
- * @reg: IO register offset
- * @val: value to write to the pll register
- *
- * Provides a IO register accessor for the atom interpreter (r4xx+).
- */
-static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
-{
- struct amdgpu_device *adev = drm_to_adev(info->dev);
-
- WREG32_IO(reg, val);
-}
-
-/**
- * cail_ioreg_read - read IO register
- *
- * @info: atom card_info pointer
- * @reg: IO register offset
- *
- * Provides an IO register accessor for the atom interpreter (r4xx+).
- * Returns the value of the IO register.
- */
-static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
-{
- struct amdgpu_device *adev = drm_to_adev(info->dev);
- uint32_t r;
-
- r = RREG32_IO(reg);
- return r;
-}
-
static ssize_t amdgpu_atombios_get_vbios_version(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -1998,15 +1964,6 @@ int amdgpu_atombios_init(struct amdgpu_device *adev)
atom_card_info->dev = adev_to_drm(adev);
atom_card_info->reg_read = cail_reg_read;
atom_card_info->reg_write = cail_reg_write;
- /* needed for iio ops */
- if (adev->rio_mem) {
- atom_card_info->ioreg_read = cail_ioreg_read;
- atom_card_info->ioreg_write = cail_ioreg_write;
- } else {
- DRM_DEBUG("PCI I/O BAR is not found. Using MMIO to access ATOM BIOS\n");
- atom_card_info->ioreg_read = cail_reg_read;
- atom_card_info->ioreg_write = cail_reg_write;
- }
atom_card_info->mc_read = cail_mc_read;
atom_card_info->mc_write = cail_mc_write;
atom_card_info->pll_read = cail_pll_read;
--
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