diff options
Diffstat (limited to 'shared-core/via_irq.c')
| -rw-r--r-- | shared-core/via_irq.c | 402 |
1 files changed, 0 insertions, 402 deletions
diff --git a/shared-core/via_irq.c b/shared-core/via_irq.c deleted file mode 100644 index 34e3076c..00000000 --- a/shared-core/via_irq.c +++ /dev/null @@ -1,402 +0,0 @@ -/* via_irq.c - * - * Copyright 2004 BEAM Ltd. - * Copyright 2002 Tungsten Graphics, Inc. - * Copyright 2005 Thomas Hellstrom. - * All Rights Reserved. - * - * 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 (including the next - * paragraph) 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 - * BEAM LTD, TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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: - * Terry Barnaby <terry1@beam.ltd.uk> - * Keith Whitwell <keith@tungstengraphics.com> - * Thomas Hellstrom <unichrome@shipmail.org> - * - * This code provides standard DRM access to the Via Unichrome / Pro Vertical blank - * interrupt, as well as an infrastructure to handle other interrupts of the chip. - * The refresh rate is also calculated for video playback sync purposes. - */ - -#include "drmP.h" -#include "drm.h" -#include "via_drm.h" -#include "via_drv.h" - -#define VIA_REG_INTERRUPT 0x200 - -/* VIA_REG_INTERRUPT */ -#define VIA_IRQ_GLOBAL (1 << 31) -#define VIA_IRQ_VBLANK_ENABLE (1 << 19) -#define VIA_IRQ_VBLANK_PENDING (1 << 3) -#define VIA_IRQ_HQV0_ENABLE (1 << 11) -#define VIA_IRQ_HQV1_ENABLE (1 << 25) -#define VIA_IRQ_HQV0_PENDING (1 << 9) -#define VIA_IRQ_HQV1_PENDING (1 << 10) -#define VIA_IRQ_DMA0_DD_ENABLE (1 << 20) -#define VIA_IRQ_DMA0_TD_ENABLE (1 << 21) -#define VIA_IRQ_DMA1_DD_ENABLE (1 << 22) -#define VIA_IRQ_DMA1_TD_ENABLE (1 << 23) -#define VIA_IRQ_DMA0_DD_PENDING (1 << 4) -#define VIA_IRQ_DMA0_TD_PENDING (1 << 5) -#define VIA_IRQ_DMA1_DD_PENDING (1 << 6) -#define VIA_IRQ_DMA1_TD_PENDING (1 << 7) - - -/* - * Device-specific IRQs go here. This type might need to be extended with - * the register if there are multiple IRQ control registers. - * Currently we activate the HQV interrupts of Unichrome Pro group A. - */ - -static maskarray_t via_pro_group_a_irqs[] = { - {VIA_IRQ_HQV0_ENABLE, VIA_IRQ_HQV0_PENDING, 0x000003D0, 0x00008010, - 0x00000000 }, - {VIA_IRQ_HQV1_ENABLE, VIA_IRQ_HQV1_PENDING, 0x000013D0, 0x00008010, - 0x00000000 }, - {VIA_IRQ_DMA0_TD_ENABLE, VIA_IRQ_DMA0_TD_PENDING, VIA_PCI_DMA_CSR0, - VIA_DMA_CSR_TA | VIA_DMA_CSR_TD, 0x00000008}, - {VIA_IRQ_DMA1_TD_ENABLE, VIA_IRQ_DMA1_TD_PENDING, VIA_PCI_DMA_CSR1, - VIA_DMA_CSR_TA | VIA_DMA_CSR_TD, 0x00000008}, -}; -static int via_num_pro_group_a = ARRAY_SIZE(via_pro_group_a_irqs); -static int via_irqmap_pro_group_a[] = {0, 1, -1, 2, -1, 3}; - -static maskarray_t via_unichrome_irqs[] = { - {VIA_IRQ_DMA0_TD_ENABLE, VIA_IRQ_DMA0_TD_PENDING, VIA_PCI_DMA_CSR0, - VIA_DMA_CSR_TA | VIA_DMA_CSR_TD, 0x00000008}, - {VIA_IRQ_DMA1_TD_ENABLE, VIA_IRQ_DMA1_TD_PENDING, VIA_PCI_DMA_CSR1, - VIA_DMA_CSR_TA | VIA_DMA_CSR_TD, 0x00000008} -}; -static int via_num_unichrome = ARRAY_SIZE(via_unichrome_irqs); -static int via_irqmap_unichrome[] = {-1, -1, -1, 0, -1, 1}; - - -static unsigned time_diff(struct timeval *now,struct timeval *then) -{ - return (now->tv_usec >= then->tv_usec) ? - now->tv_usec - then->tv_usec : - 1000000 - (then->tv_usec - now->tv_usec); -} - -u32 via_get_vblank_counter(struct drm_device *dev, int crtc) -{ - drm_via_private_t *dev_priv = dev->dev_private; - if (crtc != 0) - return 0; - - return atomic_read(&dev_priv->vbl_received); -} - -irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) -{ - struct drm_device *dev = (struct drm_device *) arg; - drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; - u32 status; - int handled = 0; - struct timeval cur_vblank; - drm_via_irq_t *cur_irq = dev_priv->via_irqs; - int i; - - status = VIA_READ(VIA_REG_INTERRUPT); - if (status & VIA_IRQ_VBLANK_PENDING) { - atomic_inc(&dev_priv->vbl_received); - if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) { -#ifdef __linux__ - do_gettimeofday(&cur_vblank); -#else - microtime(&cur_vblank); -#endif - if (dev_priv->last_vblank_valid) { - dev_priv->usec_per_vblank = - time_diff(&cur_vblank, - &dev_priv->last_vblank) >> 4; - } - dev_priv->last_vblank = cur_vblank; - dev_priv->last_vblank_valid = 1; - } - if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) { - DRM_DEBUG("US per vblank is: %u\n", - dev_priv->usec_per_vblank); - } - drm_handle_vblank(dev, 0); - handled = 1; - } - - for (i = 0; i < dev_priv->num_irqs; ++i) { - if (status & cur_irq->pending_mask) { - atomic_inc(&cur_irq->irq_received); - DRM_WAKEUP(&cur_irq->irq_queue); - handled = 1; -#ifdef VIA_HAVE_DMABLIT - if (dev_priv->irq_map[drm_via_irq_dma0_td] == i) { - via_dmablit_handler(dev, 0, 1); - } else if (dev_priv->irq_map[drm_via_irq_dma1_td] == i) { - via_dmablit_handler(dev, 1, 1); - } -#endif - } - cur_irq++; - } - - /* Acknowlege interrupts */ - VIA_WRITE(VIA_REG_INTERRUPT, status); - - - if (handled) - return IRQ_HANDLED; - else - return IRQ_NONE; -} - -static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t * dev_priv) -{ - u32 status; - - if (dev_priv) { - /* Acknowlege interrupts */ - status = VIA_READ(VIA_REG_INTERRUPT); - VIA_WRITE(VIA_REG_INTERRUPT, status | - dev_priv->irq_pending_mask); - } -} - -int via_enable_vblank(struct drm_device *dev, int crtc) -{ - drm_via_private_t *dev_priv = dev->dev_private; - u32 status; - - if (crtc != 0) { - DRM_ERROR("%s: bad crtc %d\n", __FUNCTION__, crtc); - return -EINVAL; - } - - status = VIA_READ(VIA_REG_INTERRUPT); - VIA_WRITE(VIA_REG_INTERRUPT, status & VIA_IRQ_VBLANK_ENABLE); - - VIA_WRITE8(0x83d4, 0x11); - VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30); - - return 0; -} - -void via_disable_vblank(struct drm_device *dev, int crtc) -{ - drm_via_private_t *dev_priv = dev->dev_private; - - VIA_WRITE8(0x83d4, 0x11); - VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30); - - if (crtc != 0) - DRM_ERROR("%s: bad crtc %d\n", __FUNCTION__, crtc); -} - -static int -via_driver_irq_wait(struct drm_device * dev, unsigned int irq, int force_sequence, - unsigned int *sequence) -{ - drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; - unsigned int cur_irq_sequence; - drm_via_irq_t *cur_irq; - int ret = 0; - maskarray_t *masks; - int real_irq; - - DRM_DEBUG("\n"); - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - if (irq >= drm_via_irq_num) { - DRM_ERROR("Trying to wait on unknown irq %d\n", irq); - return -EINVAL; - } - - real_irq = dev_priv->irq_map[irq]; - - if (real_irq < 0) { - DRM_ERROR("Video IRQ %d not available on this hardware.\n", - irq); - return -EINVAL; - } - - masks = dev_priv->irq_masks; - cur_irq = dev_priv->via_irqs + real_irq; - - if (masks[real_irq][2] && !force_sequence) { - DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, - ((VIA_READ(masks[irq][2]) & masks[irq][3]) == - masks[irq][4])); - cur_irq_sequence = atomic_read(&cur_irq->irq_received); - } else { - DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, - (((cur_irq_sequence = - atomic_read(&cur_irq->irq_received)) - - *sequence) <= (1 << 23))); - } - *sequence = cur_irq_sequence; - return ret; -} - - -/* - * drm_dma.h hooks - */ - -void via_driver_irq_preinstall(struct drm_device * dev) -{ - drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; - u32 status; - drm_via_irq_t *cur_irq; - int i; - - DRM_DEBUG("dev_priv: %p\n", dev_priv); - if (dev_priv) { - cur_irq = dev_priv->via_irqs; - - dev_priv->irq_enable_mask = VIA_IRQ_VBLANK_ENABLE; - dev_priv->irq_pending_mask = VIA_IRQ_VBLANK_PENDING; - - if (dev_priv->chipset == VIA_PRO_GROUP_A || - dev_priv->chipset == VIA_DX9_0) { - dev_priv->irq_masks = via_pro_group_a_irqs; - dev_priv->num_irqs = via_num_pro_group_a; - dev_priv->irq_map = via_irqmap_pro_group_a; - } else { - dev_priv->irq_masks = via_unichrome_irqs; - dev_priv->num_irqs = via_num_unichrome; - dev_priv->irq_map = via_irqmap_unichrome; - } - - for (i = 0; i < dev_priv->num_irqs; ++i) { - atomic_set(&cur_irq->irq_received, 0); - cur_irq->enable_mask = dev_priv->irq_masks[i][0]; - cur_irq->pending_mask = dev_priv->irq_masks[i][1]; - DRM_INIT_WAITQUEUE(&cur_irq->irq_queue); - dev_priv->irq_enable_mask |= cur_irq->enable_mask; - dev_priv->irq_pending_mask |= cur_irq->pending_mask; - cur_irq++; - - DRM_DEBUG("Initializing IRQ %d\n", i); - } - - dev_priv->last_vblank_valid = 0; - - /* Clear VSync interrupt regs */ - status = VIA_READ(VIA_REG_INTERRUPT); - VIA_WRITE(VIA_REG_INTERRUPT, status & - ~(dev_priv->irq_enable_mask)); - - /* Clear bits if they're already high */ - viadrv_acknowledge_irqs(dev_priv); - } -} - -int via_driver_irq_postinstall(struct drm_device * dev) -{ - drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; - u32 status; - - DRM_DEBUG("via_driver_irq_postinstall\n"); - if (!dev_priv) - return -EINVAL; - - status = VIA_READ(VIA_REG_INTERRUPT); - VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL - | dev_priv->irq_enable_mask); - - /* Some magic, oh for some data sheets ! */ - VIA_WRITE8(0x83d4, 0x11); - VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30); - - return 0; -} - -void via_driver_irq_uninstall(struct drm_device * dev) -{ - drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; - u32 status; - - DRM_DEBUG("\n"); - if (dev_priv) { - - /* Some more magic, oh for some data sheets ! */ - - VIA_WRITE8(0x83d4, 0x11); - VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30); - - status = VIA_READ(VIA_REG_INTERRUPT); - VIA_WRITE(VIA_REG_INTERRUPT, status & - ~(VIA_IRQ_VBLANK_ENABLE | dev_priv->irq_enable_mask)); - } -} - -int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_via_irqwait_t *irqwait = data; - struct timeval now; - int ret = 0; - drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; - drm_via_irq_t *cur_irq = dev_priv->via_irqs; - int force_sequence; - - if (!dev->irq) - return -EINVAL; - - if (irqwait->request.irq >= dev_priv->num_irqs) { - DRM_ERROR("Trying to wait on unknown irq %d\n", - irqwait->request.irq); - return -EINVAL; - } - - cur_irq += irqwait->request.irq; - - switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) { - case VIA_IRQ_RELATIVE: - irqwait->request.sequence += - atomic_read(&cur_irq->irq_received); - irqwait->request.type &= ~_DRM_VBLANK_RELATIVE; - case VIA_IRQ_ABSOLUTE: - break; - default: - return -EINVAL; - } - - if (irqwait->request.type & VIA_IRQ_SIGNAL) { - DRM_ERROR("Signals on Via IRQs not implemented yet.\n"); - return -EINVAL; - } - - force_sequence = (irqwait->request.type & VIA_IRQ_FORCE_SEQUENCE); - - ret = via_driver_irq_wait(dev, irqwait->request.irq, force_sequence, - &irqwait->request.sequence); -#ifdef __linux__ - do_gettimeofday(&now); -#else - microtime(&now); -#endif - irqwait->reply.tval_sec = now.tv_sec; - irqwait->reply.tval_usec = now.tv_usec; - - return ret; -} |