/* * 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 #include #include #include "radeon_reg.h" #include "radeon.h" #include "atom.h" #include #define RADEON_WAIT_IDLE_TIMEOUT 200 /** * radeon_driver_irq_handler_kms - irq handler for KMS * * @int irq, void *arg: args * * This is the irq handler for the radeon KMS driver (all asics). * radeon_irq_process is a macro that points to the per-asic * irq handler callback. */ irqreturn_t radeon_driver_irq_handler_kms(int irq, void *arg) { struct drm_device *dev = (struct drm_device *) arg; struct radeon_device *rdev = dev->dev_private; return radeon_irq_process(rdev); } /** * radeon_driver_irq_preinstall_kms - drm irq preinstall callback * * @dev: drm dev pointer * * Gets the hw ready to enable irqs (all asics). * This function disables all interrupt sources on the GPU. */ void radeon_driver_irq_preinstall_kms(struct drm_device *dev) { struct radeon_device *rdev = dev->dev_private; unsigned long irqflags; unsigned i; spin_lock_irqsave(&rdev->irq.lock, irqflags); /* Disable *all* interrupts */ for (i = 0; i < RADEON_NUM_RINGS; i++) atomic_set(&rdev->irq.ring_int[i], 0); rdev->irq.dpm_thermal = false; for (i = 0; i < RADEON_MAX_HPD_PINS; i++) rdev->irq.hpd[i] = false; for (i = 0; i < RADEON_MAX_CRTCS; i++) { rdev->irq.crtc_vblank_int[i] = false; atomic_set(&rdev->irq.pflip[i], 0); rdev->irq.afmt[i] = false; } radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); /* Clear bits */ radeon_irq_process(rdev); } /** * radeon_driver_irq_postinstall_kms - drm irq preinstall callback * * @dev: drm dev pointer * * Handles stuff to be done after enabling irqs (all asics). * Returns 0 on success. */ int radeon_driver_irq_postinstall_kms(struct drm_device *dev) { struct radeon_device *rdev = dev->dev_private; if (ASIC_IS_AVIVO(rdev)) dev->max_vblank_count = 0x00ffffff; else dev->max_vblank_count = 0x001fffff; return 0; } /** * radeon_driver_irq_uninstall_kms - drm irq uninstall callback * * @dev: drm dev pointer * * This function disables all interrupt sources on the GPU (all asics). */ void radeon_driver_irq_uninstall_kms(struct drm_device *dev) { struct radeon_device *rdev = dev->dev_private; unsigned long irqflags; unsigned i; if (rdev == NULL) { return; } spin_lock_irqsave(&rdev->irq.lock, irqflags); /* Disable *all* interrupts */ for (i = 0; i < RADEON_NUM_RINGS; i++) atomic_set(&rdev->irq.ring_int[i], 0); rdev->irq.dpm_thermal = false; for (i = 0; i < RADEON_MAX_HPD_PINS; i++) rdev->irq.hpd[i] = false; for (i = 0; i < RADEON_MAX_CRTCS; i++) { rdev->irq.crtc_vblank_int[i] = false; atomic_set(&rdev->irq.pflip[i], 0); rdev->irq.afmt[i] = false; } radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); } /** * radeon_irq_kms_init - init driver interrupt info * * @rdev: radeon device pointer * * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics). * Returns 0 for success, error for failure. */ int radeon_irq_kms_init(struct radeon_device *rdev) { int r = 0; spin_lock_init(&rdev->irq.lock); r = drm_vblank_init(rdev->ddev, rdev->num_crtc); if (r) { return r; } rdev->ddev->vblank_disable_allowed = true; /* enable msi */ rdev->msi_enabled = 0; rdev->irq.installed = true; r = drm_irq_install(rdev->ddev, rdev->ddev->pdev->irq); if (r) { rdev->irq.installed = false; FAIL(); return r; } DRM_INFO("radeon: irq initialized.\n"); return 0; } /** * radeon_irq_kms_fini - tear down driver interrupt info * * @rdev: radeon device pointer * * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics). */ void radeon_irq_kms_fini(struct radeon_device *rdev) { drm_vblank_cleanup(rdev->ddev); if (rdev->irq.installed) { // drm_irq_uninstall(rdev->ddev); rdev->irq.installed = false; // if (rdev->msi_enabled) // pci_disable_msi(rdev->pdev); } } /** * radeon_irq_kms_sw_irq_get - enable software interrupt * * @rdev: radeon device pointer * @ring: ring whose interrupt you want to enable * * Enables the software interrupt for a specific ring (all asics). * The software interrupt is generally used to signal a fence on * a particular ring. */ void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring) { unsigned long irqflags; if (!rdev->ddev->irq_enabled) return; if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) { spin_lock_irqsave(&rdev->irq.lock, irqflags); radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); } } /** * radeon_irq_kms_sw_irq_get_delayed - enable software interrupt * * @rdev: radeon device pointer * @ring: ring whose interrupt you want to enable * * Enables the software interrupt for a specific ring (all asics). * The software interrupt is generally used to signal a fence on * a particular ring. */ bool radeon_irq_kms_sw_irq_get_delayed(struct radeon_device *rdev, int ring) { return atomic_inc_return(&rdev->irq.ring_int[ring]) == 1; } /** * radeon_irq_kms_sw_irq_put - disable software interrupt * * @rdev: radeon device pointer * @ring: ring whose interrupt you want to disable * * Disables the software interrupt for a specific ring (all asics). * The software interrupt is generally used to signal a fence on * a particular ring. */ void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring) { unsigned long irqflags; if (!rdev->ddev->irq_enabled) return; if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) { spin_lock_irqsave(&rdev->irq.lock, irqflags); radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); } } /** * radeon_irq_kms_enable_hpd - enable hotplug detect interrupt * * @rdev: radeon device pointer * @hpd_mask: mask of hpd pins you want to enable. * * Enables the hotplug detect interrupt for a specific hpd pin (all asics). */ void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask) { unsigned long irqflags; int i; if (!rdev->ddev->irq_enabled) return; spin_lock_irqsave(&rdev->irq.lock, irqflags); for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i)); radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); } /** * radeon_irq_kms_disable_hpd - disable hotplug detect interrupt * * @rdev: radeon device pointer * @hpd_mask: mask of hpd pins you want to disable. * * Disables the hotplug detect interrupt for a specific hpd pin (all asics). */ void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask) { unsigned long irqflags; int i; if (!rdev->ddev->irq_enabled) return; spin_lock_irqsave(&rdev->irq.lock, irqflags); for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) rdev->irq.hpd[i] &= !(hpd_mask & (1 << i)); radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); }