forked from Minki/linux
f54b350d89
radeon_ring_restore is freeing the memory for the saved ring data. We need to remember that, otherwise we try to restore the ring data again on the next try. Additional to that it shouldn't try the reset infinitely if we have saved ring data. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
1442 lines
37 KiB
C
1442 lines
37 KiB
C
/*
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* Copyright 2008 Advanced Micro Devices, Inc.
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* Copyright 2008 Red Hat Inc.
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* Copyright 2009 Jerome Glisse.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie
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* Alex Deucher
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* Jerome Glisse
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*/
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#include <linux/console.h>
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#include <linux/slab.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/radeon_drm.h>
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#include <linux/vgaarb.h>
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#include <linux/vga_switcheroo.h>
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#include <linux/efi.h>
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#include "radeon_reg.h"
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#include "radeon.h"
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#include "atom.h"
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static const char radeon_family_name[][16] = {
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"R100",
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"RV100",
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"RS100",
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"RV200",
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"RS200",
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"R200",
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"RV250",
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"RS300",
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"RV280",
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"R300",
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"R350",
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"RV350",
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"RV380",
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"R420",
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"R423",
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"RV410",
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"RS400",
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"RS480",
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"RS600",
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"RS690",
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"RS740",
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"RV515",
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"R520",
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"RV530",
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"RV560",
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"RV570",
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"R580",
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"R600",
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"RV610",
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"RV630",
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"RV670",
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"RV620",
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"RV635",
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"RS780",
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"RS880",
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"RV770",
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"RV730",
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"RV710",
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"RV740",
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"CEDAR",
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"REDWOOD",
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"JUNIPER",
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"CYPRESS",
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"HEMLOCK",
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"PALM",
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"SUMO",
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"SUMO2",
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"BARTS",
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"TURKS",
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"CAICOS",
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"CAYMAN",
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"ARUBA",
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"TAHITI",
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"PITCAIRN",
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"VERDE",
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"LAST",
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};
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/**
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* radeon_surface_init - Clear GPU surface registers.
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*
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* @rdev: radeon_device pointer
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*
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* Clear GPU surface registers (r1xx-r5xx).
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*/
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void radeon_surface_init(struct radeon_device *rdev)
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{
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/* FIXME: check this out */
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if (rdev->family < CHIP_R600) {
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int i;
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for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
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if (rdev->surface_regs[i].bo)
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radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
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else
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radeon_clear_surface_reg(rdev, i);
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}
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/* enable surfaces */
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WREG32(RADEON_SURFACE_CNTL, 0);
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}
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}
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/*
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* GPU scratch registers helpers function.
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*/
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/**
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* radeon_scratch_init - Init scratch register driver information.
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*
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* @rdev: radeon_device pointer
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*
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* Init CP scratch register driver information (r1xx-r5xx)
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*/
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void radeon_scratch_init(struct radeon_device *rdev)
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{
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int i;
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/* FIXME: check this out */
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if (rdev->family < CHIP_R300) {
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rdev->scratch.num_reg = 5;
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} else {
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rdev->scratch.num_reg = 7;
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}
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rdev->scratch.reg_base = RADEON_SCRATCH_REG0;
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for (i = 0; i < rdev->scratch.num_reg; i++) {
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rdev->scratch.free[i] = true;
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rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
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}
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}
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/**
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* radeon_scratch_get - Allocate a scratch register
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*
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* @rdev: radeon_device pointer
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* @reg: scratch register mmio offset
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*
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* Allocate a CP scratch register for use by the driver (all asics).
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* Returns 0 on success or -EINVAL on failure.
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*/
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int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
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{
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int i;
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for (i = 0; i < rdev->scratch.num_reg; i++) {
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if (rdev->scratch.free[i]) {
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rdev->scratch.free[i] = false;
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*reg = rdev->scratch.reg[i];
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return 0;
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}
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}
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return -EINVAL;
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}
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/**
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* radeon_scratch_free - Free a scratch register
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*
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* @rdev: radeon_device pointer
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* @reg: scratch register mmio offset
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*
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* Free a CP scratch register allocated for use by the driver (all asics)
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*/
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void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
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{
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int i;
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for (i = 0; i < rdev->scratch.num_reg; i++) {
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if (rdev->scratch.reg[i] == reg) {
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rdev->scratch.free[i] = true;
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return;
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}
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}
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}
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/*
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* radeon_wb_*()
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* Writeback is the the method by which the the GPU updates special pages
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* in memory with the status of certain GPU events (fences, ring pointers,
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* etc.).
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*/
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/**
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* radeon_wb_disable - Disable Writeback
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*
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* @rdev: radeon_device pointer
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*
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* Disables Writeback (all asics). Used for suspend.
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*/
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void radeon_wb_disable(struct radeon_device *rdev)
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{
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int r;
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if (rdev->wb.wb_obj) {
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r = radeon_bo_reserve(rdev->wb.wb_obj, false);
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if (unlikely(r != 0))
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return;
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radeon_bo_kunmap(rdev->wb.wb_obj);
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radeon_bo_unpin(rdev->wb.wb_obj);
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radeon_bo_unreserve(rdev->wb.wb_obj);
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}
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rdev->wb.enabled = false;
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}
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/**
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* radeon_wb_fini - Disable Writeback and free memory
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*
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* @rdev: radeon_device pointer
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*
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* Disables Writeback and frees the Writeback memory (all asics).
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* Used at driver shutdown.
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*/
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void radeon_wb_fini(struct radeon_device *rdev)
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{
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radeon_wb_disable(rdev);
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if (rdev->wb.wb_obj) {
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radeon_bo_unref(&rdev->wb.wb_obj);
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rdev->wb.wb = NULL;
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rdev->wb.wb_obj = NULL;
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}
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}
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/**
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* radeon_wb_init- Init Writeback driver info and allocate memory
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*
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* @rdev: radeon_device pointer
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*
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* Disables Writeback and frees the Writeback memory (all asics).
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* Used at driver startup.
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* Returns 0 on success or an -error on failure.
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*/
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int radeon_wb_init(struct radeon_device *rdev)
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{
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int r;
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if (rdev->wb.wb_obj == NULL) {
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r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
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RADEON_GEM_DOMAIN_GTT, NULL, &rdev->wb.wb_obj);
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if (r) {
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dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
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return r;
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}
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}
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r = radeon_bo_reserve(rdev->wb.wb_obj, false);
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if (unlikely(r != 0)) {
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radeon_wb_fini(rdev);
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return r;
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}
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r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
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&rdev->wb.gpu_addr);
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if (r) {
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radeon_bo_unreserve(rdev->wb.wb_obj);
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dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
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radeon_wb_fini(rdev);
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return r;
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}
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r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
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radeon_bo_unreserve(rdev->wb.wb_obj);
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if (r) {
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dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
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radeon_wb_fini(rdev);
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return r;
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}
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/* clear wb memory */
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memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
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/* disable event_write fences */
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rdev->wb.use_event = false;
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/* disabled via module param */
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if (radeon_no_wb == 1) {
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rdev->wb.enabled = false;
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} else {
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if (rdev->flags & RADEON_IS_AGP) {
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/* often unreliable on AGP */
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rdev->wb.enabled = false;
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} else if (rdev->family < CHIP_R300) {
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/* often unreliable on pre-r300 */
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rdev->wb.enabled = false;
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} else {
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rdev->wb.enabled = true;
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/* event_write fences are only available on r600+ */
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if (rdev->family >= CHIP_R600) {
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rdev->wb.use_event = true;
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}
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}
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}
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/* always use writeback/events on NI, APUs */
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if (rdev->family >= CHIP_PALM) {
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rdev->wb.enabled = true;
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rdev->wb.use_event = true;
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}
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dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
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return 0;
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}
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/**
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* radeon_vram_location - try to find VRAM location
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* @rdev: radeon device structure holding all necessary informations
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* @mc: memory controller structure holding memory informations
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* @base: base address at which to put VRAM
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*
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* Function will place try to place VRAM at base address provided
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* as parameter (which is so far either PCI aperture address or
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* for IGP TOM base address).
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*
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* If there is not enough space to fit the unvisible VRAM in the 32bits
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* address space then we limit the VRAM size to the aperture.
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*
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* If we are using AGP and if the AGP aperture doesn't allow us to have
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* room for all the VRAM than we restrict the VRAM to the PCI aperture
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* size and print a warning.
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*
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* This function will never fails, worst case are limiting VRAM.
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*
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* Note: GTT start, end, size should be initialized before calling this
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* function on AGP platform.
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*
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* Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
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* this shouldn't be a problem as we are using the PCI aperture as a reference.
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* Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
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* not IGP.
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*
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* Note: we use mc_vram_size as on some board we need to program the mc to
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* cover the whole aperture even if VRAM size is inferior to aperture size
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* Novell bug 204882 + along with lots of ubuntu ones
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*
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* Note: when limiting vram it's safe to overwritte real_vram_size because
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* we are not in case where real_vram_size is inferior to mc_vram_size (ie
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* note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
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* ones)
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*
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* Note: IGP TOM addr should be the same as the aperture addr, we don't
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* explicitly check for that thought.
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*
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* FIXME: when reducing VRAM size align new size on power of 2.
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*/
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void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
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{
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mc->vram_start = base;
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if (mc->mc_vram_size > (0xFFFFFFFF - base + 1)) {
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dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
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mc->real_vram_size = mc->aper_size;
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mc->mc_vram_size = mc->aper_size;
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}
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mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
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if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
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dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
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mc->real_vram_size = mc->aper_size;
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mc->mc_vram_size = mc->aper_size;
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}
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mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
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if (radeon_vram_limit && radeon_vram_limit < mc->real_vram_size)
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mc->real_vram_size = radeon_vram_limit;
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dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
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mc->mc_vram_size >> 20, mc->vram_start,
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mc->vram_end, mc->real_vram_size >> 20);
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}
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/**
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* radeon_gtt_location - try to find GTT location
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* @rdev: radeon device structure holding all necessary informations
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* @mc: memory controller structure holding memory informations
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*
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* Function will place try to place GTT before or after VRAM.
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*
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* If GTT size is bigger than space left then we ajust GTT size.
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* Thus function will never fails.
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*
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* FIXME: when reducing GTT size align new size on power of 2.
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*/
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void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
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{
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u64 size_af, size_bf;
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size_af = ((0xFFFFFFFF - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
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size_bf = mc->vram_start & ~mc->gtt_base_align;
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if (size_bf > size_af) {
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if (mc->gtt_size > size_bf) {
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dev_warn(rdev->dev, "limiting GTT\n");
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mc->gtt_size = size_bf;
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}
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mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
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} else {
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if (mc->gtt_size > size_af) {
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dev_warn(rdev->dev, "limiting GTT\n");
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mc->gtt_size = size_af;
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}
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mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
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}
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mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
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dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
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mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
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}
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/*
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* GPU helpers function.
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*/
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/**
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* radeon_card_posted - check if the hw has already been initialized
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*
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* @rdev: radeon_device pointer
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*
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* Check if the asic has been initialized (all asics).
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* Used at driver startup.
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* Returns true if initialized or false if not.
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*/
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bool radeon_card_posted(struct radeon_device *rdev)
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{
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uint32_t reg;
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if (efi_enabled && rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE)
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return false;
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/* first check CRTCs */
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if (ASIC_IS_DCE41(rdev)) {
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reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
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RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
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if (reg & EVERGREEN_CRTC_MASTER_EN)
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return true;
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} else if (ASIC_IS_DCE4(rdev)) {
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reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
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RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) |
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RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
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RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) |
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RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
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RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
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if (reg & EVERGREEN_CRTC_MASTER_EN)
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return true;
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} else if (ASIC_IS_AVIVO(rdev)) {
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reg = RREG32(AVIVO_D1CRTC_CONTROL) |
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RREG32(AVIVO_D2CRTC_CONTROL);
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if (reg & AVIVO_CRTC_EN) {
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return true;
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}
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} else {
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reg = RREG32(RADEON_CRTC_GEN_CNTL) |
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RREG32(RADEON_CRTC2_GEN_CNTL);
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if (reg & RADEON_CRTC_EN) {
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return true;
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}
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}
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|
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/* then check MEM_SIZE, in case the crtcs are off */
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if (rdev->family >= CHIP_R600)
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reg = RREG32(R600_CONFIG_MEMSIZE);
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else
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reg = RREG32(RADEON_CONFIG_MEMSIZE);
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if (reg)
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return true;
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return false;
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}
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/**
|
|
* radeon_update_bandwidth_info - update display bandwidth params
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Used when sclk/mclk are switched or display modes are set.
|
|
* params are used to calculate display watermarks (all asics)
|
|
*/
|
|
void radeon_update_bandwidth_info(struct radeon_device *rdev)
|
|
{
|
|
fixed20_12 a;
|
|
u32 sclk = rdev->pm.current_sclk;
|
|
u32 mclk = rdev->pm.current_mclk;
|
|
|
|
/* sclk/mclk in Mhz */
|
|
a.full = dfixed_const(100);
|
|
rdev->pm.sclk.full = dfixed_const(sclk);
|
|
rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
|
|
rdev->pm.mclk.full = dfixed_const(mclk);
|
|
rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
|
|
|
|
if (rdev->flags & RADEON_IS_IGP) {
|
|
a.full = dfixed_const(16);
|
|
/* core_bandwidth = sclk(Mhz) * 16 */
|
|
rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* radeon_boot_test_post_card - check and possibly initialize the hw
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Check if the asic is initialized and if not, attempt to initialize
|
|
* it (all asics).
|
|
* Returns true if initialized or false if not.
|
|
*/
|
|
bool radeon_boot_test_post_card(struct radeon_device *rdev)
|
|
{
|
|
if (radeon_card_posted(rdev))
|
|
return true;
|
|
|
|
if (rdev->bios) {
|
|
DRM_INFO("GPU not posted. posting now...\n");
|
|
if (rdev->is_atom_bios)
|
|
atom_asic_init(rdev->mode_info.atom_context);
|
|
else
|
|
radeon_combios_asic_init(rdev->ddev);
|
|
return true;
|
|
} else {
|
|
dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* radeon_dummy_page_init - init dummy page used by the driver
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Allocate the dummy page used by the driver (all asics).
|
|
* This dummy page is used by the driver as a filler for gart entries
|
|
* when pages are taken out of the GART
|
|
* Returns 0 on sucess, -ENOMEM on failure.
|
|
*/
|
|
int radeon_dummy_page_init(struct radeon_device *rdev)
|
|
{
|
|
if (rdev->dummy_page.page)
|
|
return 0;
|
|
rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
|
|
if (rdev->dummy_page.page == NULL)
|
|
return -ENOMEM;
|
|
rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
|
|
0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
|
|
if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) {
|
|
dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
|
|
__free_page(rdev->dummy_page.page);
|
|
rdev->dummy_page.page = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* radeon_dummy_page_fini - free dummy page used by the driver
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Frees the dummy page used by the driver (all asics).
|
|
*/
|
|
void radeon_dummy_page_fini(struct radeon_device *rdev)
|
|
{
|
|
if (rdev->dummy_page.page == NULL)
|
|
return;
|
|
pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
|
|
PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
|
|
__free_page(rdev->dummy_page.page);
|
|
rdev->dummy_page.page = NULL;
|
|
}
|
|
|
|
|
|
/* ATOM accessor methods */
|
|
/*
|
|
* ATOM is an interpreted byte code stored in tables in the vbios. The
|
|
* driver registers callbacks to access registers and the interpreter
|
|
* in the driver parses the tables and executes then to program specific
|
|
* actions (set display modes, asic init, etc.). See radeon_atombios.c,
|
|
* atombios.h, and atom.c
|
|
*/
|
|
|
|
/**
|
|
* cail_pll_read - read PLL register
|
|
*
|
|
* @info: atom card_info pointer
|
|
* @reg: PLL register offset
|
|
*
|
|
* Provides a PLL register accessor for the atom interpreter (r4xx+).
|
|
* Returns the value of the PLL register.
|
|
*/
|
|
static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
|
|
{
|
|
struct radeon_device *rdev = info->dev->dev_private;
|
|
uint32_t r;
|
|
|
|
r = rdev->pll_rreg(rdev, reg);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* cail_pll_write - write PLL register
|
|
*
|
|
* @info: atom card_info pointer
|
|
* @reg: PLL register offset
|
|
* @val: value to write to the pll register
|
|
*
|
|
* Provides a PLL register accessor for the atom interpreter (r4xx+).
|
|
*/
|
|
static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
|
|
{
|
|
struct radeon_device *rdev = info->dev->dev_private;
|
|
|
|
rdev->pll_wreg(rdev, reg, val);
|
|
}
|
|
|
|
/**
|
|
* cail_mc_read - read MC (Memory Controller) register
|
|
*
|
|
* @info: atom card_info pointer
|
|
* @reg: MC register offset
|
|
*
|
|
* Provides an MC register accessor for the atom interpreter (r4xx+).
|
|
* Returns the value of the MC register.
|
|
*/
|
|
static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
|
|
{
|
|
struct radeon_device *rdev = info->dev->dev_private;
|
|
uint32_t r;
|
|
|
|
r = rdev->mc_rreg(rdev, reg);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* cail_mc_write - write MC (Memory Controller) register
|
|
*
|
|
* @info: atom card_info pointer
|
|
* @reg: MC register offset
|
|
* @val: value to write to the pll register
|
|
*
|
|
* Provides a MC register accessor for the atom interpreter (r4xx+).
|
|
*/
|
|
static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
|
|
{
|
|
struct radeon_device *rdev = info->dev->dev_private;
|
|
|
|
rdev->mc_wreg(rdev, reg, val);
|
|
}
|
|
|
|
/**
|
|
* cail_reg_write - write MMIO register
|
|
*
|
|
* @info: atom card_info pointer
|
|
* @reg: MMIO register offset
|
|
* @val: value to write to the pll register
|
|
*
|
|
* Provides a MMIO register accessor for the atom interpreter (r4xx+).
|
|
*/
|
|
static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
|
|
{
|
|
struct radeon_device *rdev = info->dev->dev_private;
|
|
|
|
WREG32(reg*4, val);
|
|
}
|
|
|
|
/**
|
|
* cail_reg_read - read MMIO register
|
|
*
|
|
* @info: atom card_info pointer
|
|
* @reg: MMIO register offset
|
|
*
|
|
* Provides an MMIO register accessor for the atom interpreter (r4xx+).
|
|
* Returns the value of the MMIO register.
|
|
*/
|
|
static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
|
|
{
|
|
struct radeon_device *rdev = info->dev->dev_private;
|
|
uint32_t r;
|
|
|
|
r = RREG32(reg*4);
|
|
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 radeon_device *rdev = info->dev->dev_private;
|
|
|
|
WREG32_IO(reg*4, 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 radeon_device *rdev = info->dev->dev_private;
|
|
uint32_t r;
|
|
|
|
r = RREG32_IO(reg*4);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* radeon_atombios_init - init the driver info and callbacks for atombios
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Initializes the driver info and register access callbacks for the
|
|
* ATOM interpreter (r4xx+).
|
|
* Returns 0 on sucess, -ENOMEM on failure.
|
|
* Called at driver startup.
|
|
*/
|
|
int radeon_atombios_init(struct radeon_device *rdev)
|
|
{
|
|
struct card_info *atom_card_info =
|
|
kzalloc(sizeof(struct card_info), GFP_KERNEL);
|
|
|
|
if (!atom_card_info)
|
|
return -ENOMEM;
|
|
|
|
rdev->mode_info.atom_card_info = atom_card_info;
|
|
atom_card_info->dev = rdev->ddev;
|
|
atom_card_info->reg_read = cail_reg_read;
|
|
atom_card_info->reg_write = cail_reg_write;
|
|
/* needed for iio ops */
|
|
if (rdev->rio_mem) {
|
|
atom_card_info->ioreg_read = cail_ioreg_read;
|
|
atom_card_info->ioreg_write = cail_ioreg_write;
|
|
} else {
|
|
DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\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;
|
|
atom_card_info->pll_write = cail_pll_write;
|
|
|
|
rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
|
|
mutex_init(&rdev->mode_info.atom_context->mutex);
|
|
radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
|
|
atom_allocate_fb_scratch(rdev->mode_info.atom_context);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* radeon_atombios_fini - free the driver info and callbacks for atombios
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Frees the driver info and register access callbacks for the ATOM
|
|
* interpreter (r4xx+).
|
|
* Called at driver shutdown.
|
|
*/
|
|
void radeon_atombios_fini(struct radeon_device *rdev)
|
|
{
|
|
if (rdev->mode_info.atom_context) {
|
|
kfree(rdev->mode_info.atom_context->scratch);
|
|
kfree(rdev->mode_info.atom_context);
|
|
}
|
|
kfree(rdev->mode_info.atom_card_info);
|
|
}
|
|
|
|
/* COMBIOS */
|
|
/*
|
|
* COMBIOS is the bios format prior to ATOM. It provides
|
|
* command tables similar to ATOM, but doesn't have a unified
|
|
* parser. See radeon_combios.c
|
|
*/
|
|
|
|
/**
|
|
* radeon_combios_init - init the driver info for combios
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Initializes the driver info for combios (r1xx-r3xx).
|
|
* Returns 0 on sucess.
|
|
* Called at driver startup.
|
|
*/
|
|
int radeon_combios_init(struct radeon_device *rdev)
|
|
{
|
|
radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* radeon_combios_fini - free the driver info for combios
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Frees the driver info for combios (r1xx-r3xx).
|
|
* Called at driver shutdown.
|
|
*/
|
|
void radeon_combios_fini(struct radeon_device *rdev)
|
|
{
|
|
}
|
|
|
|
/* if we get transitioned to only one device, take VGA back */
|
|
/**
|
|
* radeon_vga_set_decode - enable/disable vga decode
|
|
*
|
|
* @cookie: radeon_device pointer
|
|
* @state: enable/disable vga decode
|
|
*
|
|
* Enable/disable vga decode (all asics).
|
|
* Returns VGA resource flags.
|
|
*/
|
|
static unsigned int radeon_vga_set_decode(void *cookie, bool state)
|
|
{
|
|
struct radeon_device *rdev = cookie;
|
|
radeon_vga_set_state(rdev, state);
|
|
if (state)
|
|
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
|
|
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
else
|
|
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
}
|
|
|
|
/**
|
|
* radeon_check_arguments - validate module params
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Validates certain module parameters and updates
|
|
* the associated values used by the driver (all asics).
|
|
*/
|
|
void radeon_check_arguments(struct radeon_device *rdev)
|
|
{
|
|
/* vramlimit must be a power of two */
|
|
switch (radeon_vram_limit) {
|
|
case 0:
|
|
case 4:
|
|
case 8:
|
|
case 16:
|
|
case 32:
|
|
case 64:
|
|
case 128:
|
|
case 256:
|
|
case 512:
|
|
case 1024:
|
|
case 2048:
|
|
case 4096:
|
|
break;
|
|
default:
|
|
dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
|
|
radeon_vram_limit);
|
|
radeon_vram_limit = 0;
|
|
break;
|
|
}
|
|
radeon_vram_limit = radeon_vram_limit << 20;
|
|
/* gtt size must be power of two and greater or equal to 32M */
|
|
switch (radeon_gart_size) {
|
|
case 4:
|
|
case 8:
|
|
case 16:
|
|
dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n",
|
|
radeon_gart_size);
|
|
radeon_gart_size = 512;
|
|
break;
|
|
case 32:
|
|
case 64:
|
|
case 128:
|
|
case 256:
|
|
case 512:
|
|
case 1024:
|
|
case 2048:
|
|
case 4096:
|
|
break;
|
|
default:
|
|
dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
|
|
radeon_gart_size);
|
|
radeon_gart_size = 512;
|
|
break;
|
|
}
|
|
rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
|
|
/* AGP mode can only be -1, 1, 2, 4, 8 */
|
|
switch (radeon_agpmode) {
|
|
case -1:
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 4:
|
|
case 8:
|
|
break;
|
|
default:
|
|
dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
|
|
"-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
|
|
radeon_agpmode = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* radeon_switcheroo_set_state - set switcheroo state
|
|
*
|
|
* @pdev: pci dev pointer
|
|
* @state: vga switcheroo state
|
|
*
|
|
* Callback for the switcheroo driver. Suspends or resumes the
|
|
* the asics before or after it is powered up using ACPI methods.
|
|
*/
|
|
static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
|
|
if (state == VGA_SWITCHEROO_ON) {
|
|
printk(KERN_INFO "radeon: switched on\n");
|
|
/* don't suspend or resume card normally */
|
|
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
|
|
radeon_resume_kms(dev);
|
|
dev->switch_power_state = DRM_SWITCH_POWER_ON;
|
|
drm_kms_helper_poll_enable(dev);
|
|
} else {
|
|
printk(KERN_INFO "radeon: switched off\n");
|
|
drm_kms_helper_poll_disable(dev);
|
|
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
|
|
radeon_suspend_kms(dev, pmm);
|
|
dev->switch_power_state = DRM_SWITCH_POWER_OFF;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* radeon_switcheroo_can_switch - see if switcheroo state can change
|
|
*
|
|
* @pdev: pci dev pointer
|
|
*
|
|
* Callback for the switcheroo driver. Check of the switcheroo
|
|
* state can be changed.
|
|
* Returns true if the state can be changed, false if not.
|
|
*/
|
|
static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
bool can_switch;
|
|
|
|
spin_lock(&dev->count_lock);
|
|
can_switch = (dev->open_count == 0);
|
|
spin_unlock(&dev->count_lock);
|
|
return can_switch;
|
|
}
|
|
|
|
static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
|
|
.set_gpu_state = radeon_switcheroo_set_state,
|
|
.reprobe = NULL,
|
|
.can_switch = radeon_switcheroo_can_switch,
|
|
};
|
|
|
|
/**
|
|
* radeon_device_init - initialize the driver
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
* @pdev: drm dev pointer
|
|
* @pdev: pci dev pointer
|
|
* @flags: driver flags
|
|
*
|
|
* Initializes the driver info and hw (all asics).
|
|
* Returns 0 for success or an error on failure.
|
|
* Called at driver startup.
|
|
*/
|
|
int radeon_device_init(struct radeon_device *rdev,
|
|
struct drm_device *ddev,
|
|
struct pci_dev *pdev,
|
|
uint32_t flags)
|
|
{
|
|
int r, i;
|
|
int dma_bits;
|
|
|
|
rdev->shutdown = false;
|
|
rdev->dev = &pdev->dev;
|
|
rdev->ddev = ddev;
|
|
rdev->pdev = pdev;
|
|
rdev->flags = flags;
|
|
rdev->family = flags & RADEON_FAMILY_MASK;
|
|
rdev->is_atom_bios = false;
|
|
rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
|
|
rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
|
|
rdev->accel_working = false;
|
|
/* set up ring ids */
|
|
for (i = 0; i < RADEON_NUM_RINGS; i++) {
|
|
rdev->ring[i].idx = i;
|
|
}
|
|
|
|
DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n",
|
|
radeon_family_name[rdev->family], pdev->vendor, pdev->device,
|
|
pdev->subsystem_vendor, pdev->subsystem_device);
|
|
|
|
/* mutex initialization are all done here so we
|
|
* can recall function without having locking issues */
|
|
mutex_init(&rdev->ring_lock);
|
|
mutex_init(&rdev->dc_hw_i2c_mutex);
|
|
atomic_set(&rdev->ih.lock, 0);
|
|
mutex_init(&rdev->gem.mutex);
|
|
mutex_init(&rdev->pm.mutex);
|
|
mutex_init(&rdev->gpu_clock_mutex);
|
|
init_rwsem(&rdev->pm.mclk_lock);
|
|
init_rwsem(&rdev->exclusive_lock);
|
|
init_waitqueue_head(&rdev->irq.vblank_queue);
|
|
init_waitqueue_head(&rdev->irq.idle_queue);
|
|
r = radeon_gem_init(rdev);
|
|
if (r)
|
|
return r;
|
|
/* initialize vm here */
|
|
mutex_init(&rdev->vm_manager.lock);
|
|
rdev->vm_manager.use_bitmap = 1;
|
|
rdev->vm_manager.max_pfn = 1 << 20;
|
|
INIT_LIST_HEAD(&rdev->vm_manager.lru_vm);
|
|
|
|
/* Set asic functions */
|
|
r = radeon_asic_init(rdev);
|
|
if (r)
|
|
return r;
|
|
radeon_check_arguments(rdev);
|
|
|
|
/* all of the newer IGP chips have an internal gart
|
|
* However some rs4xx report as AGP, so remove that here.
|
|
*/
|
|
if ((rdev->family >= CHIP_RS400) &&
|
|
(rdev->flags & RADEON_IS_IGP)) {
|
|
rdev->flags &= ~RADEON_IS_AGP;
|
|
}
|
|
|
|
if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
|
|
radeon_agp_disable(rdev);
|
|
}
|
|
|
|
/* set DMA mask + need_dma32 flags.
|
|
* PCIE - can handle 40-bits.
|
|
* IGP - can handle 40-bits
|
|
* AGP - generally dma32 is safest
|
|
* PCI - dma32 for legacy pci gart, 40 bits on newer asics
|
|
*/
|
|
rdev->need_dma32 = false;
|
|
if (rdev->flags & RADEON_IS_AGP)
|
|
rdev->need_dma32 = true;
|
|
if ((rdev->flags & RADEON_IS_PCI) &&
|
|
(rdev->family <= CHIP_RS740))
|
|
rdev->need_dma32 = true;
|
|
|
|
dma_bits = rdev->need_dma32 ? 32 : 40;
|
|
r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
|
|
if (r) {
|
|
rdev->need_dma32 = true;
|
|
dma_bits = 32;
|
|
printk(KERN_WARNING "radeon: No suitable DMA available.\n");
|
|
}
|
|
r = pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
|
|
if (r) {
|
|
pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(32));
|
|
printk(KERN_WARNING "radeon: No coherent DMA available.\n");
|
|
}
|
|
|
|
/* Registers mapping */
|
|
/* TODO: block userspace mapping of io register */
|
|
rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
|
|
rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
|
|
rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
|
|
if (rdev->rmmio == NULL) {
|
|
return -ENOMEM;
|
|
}
|
|
DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
|
|
DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
|
|
|
|
/* io port mapping */
|
|
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
|
|
if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
|
|
rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
|
|
rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
|
|
break;
|
|
}
|
|
}
|
|
if (rdev->rio_mem == NULL)
|
|
DRM_ERROR("Unable to find PCI I/O BAR\n");
|
|
|
|
/* if we have > 1 VGA cards, then disable the radeon VGA resources */
|
|
/* this will fail for cards that aren't VGA class devices, just
|
|
* ignore it */
|
|
vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
|
|
vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops);
|
|
|
|
r = radeon_init(rdev);
|
|
if (r)
|
|
return r;
|
|
|
|
r = radeon_ib_ring_tests(rdev);
|
|
if (r)
|
|
DRM_ERROR("ib ring test failed (%d).\n", r);
|
|
|
|
if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
|
|
/* Acceleration not working on AGP card try again
|
|
* with fallback to PCI or PCIE GART
|
|
*/
|
|
radeon_asic_reset(rdev);
|
|
radeon_fini(rdev);
|
|
radeon_agp_disable(rdev);
|
|
r = radeon_init(rdev);
|
|
if (r)
|
|
return r;
|
|
}
|
|
if ((radeon_testing & 1)) {
|
|
radeon_test_moves(rdev);
|
|
}
|
|
if ((radeon_testing & 2)) {
|
|
radeon_test_syncing(rdev);
|
|
}
|
|
if (radeon_benchmarking) {
|
|
radeon_benchmark(rdev, radeon_benchmarking);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void radeon_debugfs_remove_files(struct radeon_device *rdev);
|
|
|
|
/**
|
|
* radeon_device_fini - tear down the driver
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Tear down the driver info (all asics).
|
|
* Called at driver shutdown.
|
|
*/
|
|
void radeon_device_fini(struct radeon_device *rdev)
|
|
{
|
|
DRM_INFO("radeon: finishing device.\n");
|
|
rdev->shutdown = true;
|
|
/* evict vram memory */
|
|
radeon_bo_evict_vram(rdev);
|
|
radeon_fini(rdev);
|
|
vga_switcheroo_unregister_client(rdev->pdev);
|
|
vga_client_register(rdev->pdev, NULL, NULL, NULL);
|
|
if (rdev->rio_mem)
|
|
pci_iounmap(rdev->pdev, rdev->rio_mem);
|
|
rdev->rio_mem = NULL;
|
|
iounmap(rdev->rmmio);
|
|
rdev->rmmio = NULL;
|
|
radeon_debugfs_remove_files(rdev);
|
|
}
|
|
|
|
|
|
/*
|
|
* Suspend & resume.
|
|
*/
|
|
/**
|
|
* radeon_suspend_kms - initiate device suspend
|
|
*
|
|
* @pdev: drm dev pointer
|
|
* @state: suspend state
|
|
*
|
|
* Puts the hw in the suspend state (all asics).
|
|
* Returns 0 for success or an error on failure.
|
|
* Called at driver suspend.
|
|
*/
|
|
int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
|
|
{
|
|
struct radeon_device *rdev;
|
|
struct drm_crtc *crtc;
|
|
struct drm_connector *connector;
|
|
int i, r;
|
|
|
|
if (dev == NULL || dev->dev_private == NULL) {
|
|
return -ENODEV;
|
|
}
|
|
if (state.event == PM_EVENT_PRETHAW) {
|
|
return 0;
|
|
}
|
|
rdev = dev->dev_private;
|
|
|
|
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
drm_kms_helper_poll_disable(dev);
|
|
|
|
/* turn off display hw */
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
|
|
}
|
|
|
|
/* unpin the front buffers */
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb);
|
|
struct radeon_bo *robj;
|
|
|
|
if (rfb == NULL || rfb->obj == NULL) {
|
|
continue;
|
|
}
|
|
robj = gem_to_radeon_bo(rfb->obj);
|
|
/* don't unpin kernel fb objects */
|
|
if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
|
|
r = radeon_bo_reserve(robj, false);
|
|
if (r == 0) {
|
|
radeon_bo_unpin(robj);
|
|
radeon_bo_unreserve(robj);
|
|
}
|
|
}
|
|
}
|
|
/* evict vram memory */
|
|
radeon_bo_evict_vram(rdev);
|
|
|
|
mutex_lock(&rdev->ring_lock);
|
|
/* wait for gpu to finish processing current batch */
|
|
for (i = 0; i < RADEON_NUM_RINGS; i++)
|
|
radeon_fence_wait_empty_locked(rdev, i);
|
|
mutex_unlock(&rdev->ring_lock);
|
|
|
|
radeon_save_bios_scratch_regs(rdev);
|
|
|
|
radeon_pm_suspend(rdev);
|
|
radeon_suspend(rdev);
|
|
radeon_hpd_fini(rdev);
|
|
/* evict remaining vram memory */
|
|
radeon_bo_evict_vram(rdev);
|
|
|
|
radeon_agp_suspend(rdev);
|
|
|
|
pci_save_state(dev->pdev);
|
|
if (state.event == PM_EVENT_SUSPEND) {
|
|
/* Shut down the device */
|
|
pci_disable_device(dev->pdev);
|
|
pci_set_power_state(dev->pdev, PCI_D3hot);
|
|
}
|
|
console_lock();
|
|
radeon_fbdev_set_suspend(rdev, 1);
|
|
console_unlock();
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* radeon_resume_kms - initiate device resume
|
|
*
|
|
* @pdev: drm dev pointer
|
|
*
|
|
* Bring the hw back to operating state (all asics).
|
|
* Returns 0 for success or an error on failure.
|
|
* Called at driver resume.
|
|
*/
|
|
int radeon_resume_kms(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector;
|
|
struct radeon_device *rdev = dev->dev_private;
|
|
int r;
|
|
|
|
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
console_lock();
|
|
pci_set_power_state(dev->pdev, PCI_D0);
|
|
pci_restore_state(dev->pdev);
|
|
if (pci_enable_device(dev->pdev)) {
|
|
console_unlock();
|
|
return -1;
|
|
}
|
|
/* resume AGP if in use */
|
|
radeon_agp_resume(rdev);
|
|
radeon_resume(rdev);
|
|
|
|
r = radeon_ib_ring_tests(rdev);
|
|
if (r)
|
|
DRM_ERROR("ib ring test failed (%d).\n", r);
|
|
|
|
radeon_pm_resume(rdev);
|
|
radeon_restore_bios_scratch_regs(rdev);
|
|
|
|
radeon_fbdev_set_suspend(rdev, 0);
|
|
console_unlock();
|
|
|
|
/* init dig PHYs, disp eng pll */
|
|
if (rdev->is_atom_bios) {
|
|
radeon_atom_encoder_init(rdev);
|
|
radeon_atom_disp_eng_pll_init(rdev);
|
|
}
|
|
/* reset hpd state */
|
|
radeon_hpd_init(rdev);
|
|
/* blat the mode back in */
|
|
drm_helper_resume_force_mode(dev);
|
|
/* turn on display hw */
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
|
|
}
|
|
|
|
drm_kms_helper_poll_enable(dev);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* radeon_gpu_reset - reset the asic
|
|
*
|
|
* @rdev: radeon device pointer
|
|
*
|
|
* Attempt the reset the GPU if it has hung (all asics).
|
|
* Returns 0 for success or an error on failure.
|
|
*/
|
|
int radeon_gpu_reset(struct radeon_device *rdev)
|
|
{
|
|
unsigned ring_sizes[RADEON_NUM_RINGS];
|
|
uint32_t *ring_data[RADEON_NUM_RINGS];
|
|
|
|
bool saved = false;
|
|
|
|
int i, r;
|
|
int resched;
|
|
|
|
down_write(&rdev->exclusive_lock);
|
|
radeon_save_bios_scratch_regs(rdev);
|
|
/* block TTM */
|
|
resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
|
|
radeon_suspend(rdev);
|
|
|
|
for (i = 0; i < RADEON_NUM_RINGS; ++i) {
|
|
ring_sizes[i] = radeon_ring_backup(rdev, &rdev->ring[i],
|
|
&ring_data[i]);
|
|
if (ring_sizes[i]) {
|
|
saved = true;
|
|
dev_info(rdev->dev, "Saved %d dwords of commands "
|
|
"on ring %d.\n", ring_sizes[i], i);
|
|
}
|
|
}
|
|
|
|
retry:
|
|
r = radeon_asic_reset(rdev);
|
|
if (!r) {
|
|
dev_info(rdev->dev, "GPU reset succeeded, trying to resume\n");
|
|
radeon_resume(rdev);
|
|
}
|
|
|
|
radeon_restore_bios_scratch_regs(rdev);
|
|
drm_helper_resume_force_mode(rdev->ddev);
|
|
|
|
if (!r) {
|
|
for (i = 0; i < RADEON_NUM_RINGS; ++i) {
|
|
radeon_ring_restore(rdev, &rdev->ring[i],
|
|
ring_sizes[i], ring_data[i]);
|
|
ring_sizes[i] = 0;
|
|
ring_data[i] = NULL;
|
|
}
|
|
|
|
r = radeon_ib_ring_tests(rdev);
|
|
if (r) {
|
|
dev_err(rdev->dev, "ib ring test failed (%d).\n", r);
|
|
if (saved) {
|
|
saved = false;
|
|
radeon_suspend(rdev);
|
|
goto retry;
|
|
}
|
|
}
|
|
} else {
|
|
for (i = 0; i < RADEON_NUM_RINGS; ++i) {
|
|
kfree(ring_data[i]);
|
|
}
|
|
}
|
|
|
|
ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
|
|
if (r) {
|
|
/* bad news, how to tell it to userspace ? */
|
|
dev_info(rdev->dev, "GPU reset failed\n");
|
|
}
|
|
|
|
up_write(&rdev->exclusive_lock);
|
|
return r;
|
|
}
|
|
|
|
|
|
/*
|
|
* Debugfs
|
|
*/
|
|
int radeon_debugfs_add_files(struct radeon_device *rdev,
|
|
struct drm_info_list *files,
|
|
unsigned nfiles)
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < rdev->debugfs_count; i++) {
|
|
if (rdev->debugfs[i].files == files) {
|
|
/* Already registered */
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
i = rdev->debugfs_count + 1;
|
|
if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
|
|
DRM_ERROR("Reached maximum number of debugfs components.\n");
|
|
DRM_ERROR("Report so we increase "
|
|
"RADEON_DEBUGFS_MAX_COMPONENTS.\n");
|
|
return -EINVAL;
|
|
}
|
|
rdev->debugfs[rdev->debugfs_count].files = files;
|
|
rdev->debugfs[rdev->debugfs_count].num_files = nfiles;
|
|
rdev->debugfs_count = i;
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
drm_debugfs_create_files(files, nfiles,
|
|
rdev->ddev->control->debugfs_root,
|
|
rdev->ddev->control);
|
|
drm_debugfs_create_files(files, nfiles,
|
|
rdev->ddev->primary->debugfs_root,
|
|
rdev->ddev->primary);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static void radeon_debugfs_remove_files(struct radeon_device *rdev)
|
|
{
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
unsigned i;
|
|
|
|
for (i = 0; i < rdev->debugfs_count; i++) {
|
|
drm_debugfs_remove_files(rdev->debugfs[i].files,
|
|
rdev->debugfs[i].num_files,
|
|
rdev->ddev->control);
|
|
drm_debugfs_remove_files(rdev->debugfs[i].files,
|
|
rdev->debugfs[i].num_files,
|
|
rdev->ddev->primary);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
int radeon_debugfs_init(struct drm_minor *minor)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void radeon_debugfs_cleanup(struct drm_minor *minor)
|
|
{
|
|
}
|
|
#endif
|