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drm/radeon: add pci config hard reset

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This is used to hard reset the asic.  If a soft
reset is not able to reset things, a hard reset
can be used.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-10-02 13:01:36 -04:00
parent 363eb0b4b7
commit 1a0041b8f9
2 changed files with 9 additions and 0 deletions
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4
drivers/gpu/drm/radeon/radeon.h
View file

@ -140,6 +140,9 @@ extern int radeon_hard_reset;
#define RADEON_VA_RESERVED_SIZE (8 << 20)
#define RADEON_IB_VM_MAX_SIZE (64 << 10)
/* hard reset data */
#define RADEON_ASIC_RESET_DATA 0x39d5e86b
/* reset flags */
#define RADEON_RESET_GFX (1 << 0)
#define RADEON_RESET_COMPUTE (1 << 1)
@ -2675,6 +2678,7 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v);
/* Common functions */
/* AGP */
extern int radeon_gpu_reset(struct radeon_device *rdev);
extern void radeon_pci_config_reset(struct radeon_device *rdev);
extern void r600_set_bios_scratch_engine_hung(struct radeon_device *rdev, bool hung);
extern void radeon_agp_disable(struct radeon_device *rdev);
extern int radeon_modeset_init(struct radeon_device *rdev);

5
drivers/gpu/drm/radeon/radeon_device.c
View file

@ -144,6 +144,11 @@ void radeon_program_register_sequence(struct radeon_device *rdev,
}
}
void radeon_pci_config_reset(struct radeon_device *rdev)
{
pci_write_config_dword(rdev->pdev, 0x7c, RADEON_ASIC_RESET_DATA);
}
/**
* radeon_surface_init - Clear GPU surface registers.
*