diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_irq_kms.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_irq_kms.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c new file mode 100644 index 00000000000..491d569deb0 --- /dev/null +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -0,0 +1,158 @@ +/* + * Copyright 2008 Advanced Micro Devices, Inc. + * Copyright 2008 Red Hat Inc. + * Copyright 2009 Jerome Glisse. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Dave Airlie + * Alex Deucher + * Jerome Glisse + */ +#include "drmP.h" +#include "radeon_drm.h" +#include "radeon_reg.h" +#include "radeon_microcode.h" +#include "radeon.h" +#include "atom.h" + +static inline uint32_t r100_irq_ack(struct radeon_device *rdev) +{ + uint32_t irqs = RREG32(RADEON_GEN_INT_STATUS); + uint32_t irq_mask = RADEON_SW_INT_TEST; + + if (irqs) { + WREG32(RADEON_GEN_INT_STATUS, irqs); + } + return irqs & irq_mask; +} + +int r100_irq_set(struct radeon_device *rdev) +{ + uint32_t tmp = 0; + + if (rdev->irq.sw_int) { + tmp |= RADEON_SW_INT_ENABLE; + } + /* Todo go through CRTC and enable vblank int or not */ + WREG32(RADEON_GEN_INT_CNTL, tmp); + return 0; +} + +int r100_irq_process(struct radeon_device *rdev) +{ + uint32_t status; + + status = r100_irq_ack(rdev); + if (!status) { + return IRQ_NONE; + } + while (status) { + /* SW interrupt */ + if (status & RADEON_SW_INT_TEST) { + radeon_fence_process(rdev); + } + status = r100_irq_ack(rdev); + } + return IRQ_HANDLED; +} + +int rs600_irq_set(struct radeon_device *rdev) +{ + uint32_t tmp = 0; + + if (rdev->irq.sw_int) { + tmp |= RADEON_SW_INT_ENABLE; + } + WREG32(RADEON_GEN_INT_CNTL, tmp); + /* Todo go through CRTC and enable vblank int or not */ + WREG32(R500_DxMODE_INT_MASK, 0); + return 0; +} + +irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS) +{ + struct drm_device *dev = (struct drm_device *) arg; + struct radeon_device *rdev = dev->dev_private; + + return radeon_irq_process(rdev); +} + +void radeon_driver_irq_preinstall_kms(struct drm_device *dev) +{ + struct radeon_device *rdev = dev->dev_private; + unsigned i; + + /* Disable *all* interrupts */ + rdev->irq.sw_int = false; + for (i = 0; i < 2; i++) { + rdev->irq.crtc_vblank_int[i] = false; + } + radeon_irq_set(rdev); + /* Clear bits */ + radeon_irq_process(rdev); +} + +int radeon_driver_irq_postinstall_kms(struct drm_device *dev) +{ + struct radeon_device *rdev = dev->dev_private; + + dev->max_vblank_count = 0x001fffff; + rdev->irq.sw_int = true; + radeon_irq_set(rdev); + return 0; +} + +void radeon_driver_irq_uninstall_kms(struct drm_device *dev) +{ + struct radeon_device *rdev = dev->dev_private; + unsigned i; + + if (rdev == NULL) { + return; + } + /* Disable *all* interrupts */ + rdev->irq.sw_int = false; + for (i = 0; i < 2; i++) { + rdev->irq.crtc_vblank_int[i] = false; + } + radeon_irq_set(rdev); +} + +int radeon_irq_kms_init(struct radeon_device *rdev) +{ + int r = 0; + + r = drm_vblank_init(rdev->ddev, 2); + if (r) { + return r; + } + drm_irq_install(rdev->ddev); + rdev->irq.installed = true; + DRM_INFO("radeon: irq initialized.\n"); + return 0; +} + +void radeon_irq_kms_fini(struct radeon_device *rdev) +{ + if (rdev->irq.installed) { + rdev->irq.installed = false; + drm_irq_uninstall(rdev->ddev); + } +} |