Commit 1a0041b8 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: add pci config hard reset 



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: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 363eb0b4

drivers/gpu/drm/radeon/radeon.h

+4 −0
Original line number Diff line number Diff line
@@ -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);

drivers/gpu/drm/radeon/radeon_device.c

+5 −0
Original line number Diff line number Diff line
@@ -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.

 *

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