aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/drm/shared/via_irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'nx-X11/extras/drm/shared/via_irq.c')
-rw-r--r--nx-X11/extras/drm/shared/via_irq.c340
1 files changed, 0 insertions, 340 deletions
diff --git a/nx-X11/extras/drm/shared/via_irq.c b/nx-X11/extras/drm/shared/via_irq.c
deleted file mode 100644
index 0812e926b..000000000
--- a/nx-X11/extras/drm/shared/via_irq.c
+++ /dev/null
@@ -1,340 +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 "via.h"
-#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)
-
-/*
- * 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 }};
-static int via_num_pro_group_a = sizeof(via_pro_group_a_irqs)/sizeof(maskarray_t);
-
-static maskarray_t via_unichrome_irqs[] = {};
-static int via_num_unichrome = sizeof(via_unichrome_irqs)/sizeof(maskarray_t);
-
-
-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);
-}
-
-irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
-{
- drm_device_t *dev = (drm_device_t *) 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->vbl_received);
- if (!(atomic_read(&dev->vbl_received) & 0x0F)) {
- do_gettimeofday(&cur_vblank);
- 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->vbl_received) & 0xFF)) {
- DRM_DEBUG("US per vblank is: %u\n",
- dev_priv->usec_per_vblank);
- }
- DRM_WAKEUP(&dev->vbl_queue);
- DRM(vbl_send_signals)( dev );
- 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;
- }
- 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_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence)
-{
- drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- unsigned int cur_vblank;
- int ret = 0;
-
- DRM_DEBUG("viadrv_vblank_wait\n");
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
- return -EINVAL;
- }
-
- viadrv_acknowledge_irqs(dev_priv);
-
- /* Assume that the user has missed the current sequence number
- * by about a day rather than she wants to wait for years
- * using vertical blanks...
- */
-
- DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
- (((cur_vblank = atomic_read(&dev->vbl_received)) -
- *sequence) <= (1 << 23)));
-
- *sequence = cur_vblank;
- return ret;
-}
-
-static int
-via_driver_irq_wait(drm_device_t * 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 = dev_priv->via_irqs;
- int ret = 0;
- maskarray_t *masks = dev_priv->irq_masks;
-
- DRM_DEBUG("%s\n", __FUNCTION__);
-
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
- return DRM_ERR(EINVAL);
- }
-
- if (irq >= dev_priv->num_irqs ) {
- DRM_ERROR("%s Trying to wait on unknown irq %d\n", __FUNCTION__, irq);
- return DRM_ERR(EINVAL);
- }
-
- cur_irq += irq;
-
- if (masks[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(drm_device_t * dev)
-{
- drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- u32 status;
- drm_via_irq_t *cur_irq = dev_priv->via_irqs;
- int i;
-
- DRM_DEBUG("driver_irq_preinstall: dev_priv: %p\n", dev_priv);
- if (dev_priv) {
-
- dev_priv->irq_enable_mask = VIA_IRQ_VBLANK_ENABLE;
- dev_priv->irq_pending_mask = VIA_IRQ_VBLANK_PENDING;
-
- dev_priv->irq_masks = (dev_priv->pro_group_a) ?
- via_pro_group_a_irqs : via_unichrome_irqs;
- dev_priv->num_irqs = (dev_priv->pro_group_a) ?
- via_num_pro_group_a : via_num_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);
- }
-}
-
-void via_driver_irq_postinstall(drm_device_t * 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) {
- 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);
-
- }
-}
-
-void via_driver_irq_uninstall(drm_device_t * dev)
-{
- drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- u32 status;
-
- DRM_DEBUG("driver_irq_uninstall)\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(DRM_IOCTL_ARGS)
-{
- DRM_DEVICE;
-
- drm_via_irqwait_t __user *argp = (void __user *)data;
- drm_via_irqwait_t irqwait;
- 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 DRM_ERR(EINVAL);
-
- DRM_COPY_FROM_USER_IOCTL(irqwait, argp, sizeof(irqwait));
- if (irqwait.request.irq >= dev_priv->num_irqs) {
- DRM_ERROR("%s Trying to wait on unknown irq %d\n", __FUNCTION__,
- irqwait.request.irq);
- return DRM_ERR(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 DRM_ERR(EINVAL);
- }
-
- if (irqwait.request.type & VIA_IRQ_SIGNAL) {
- DRM_ERROR("%s Signals on Via IRQs not implemented yet.\n",
- __FUNCTION__);
- return DRM_ERR(EINVAL);
- }
-
- force_sequence = (irqwait.request.type & VIA_IRQ_FORCE_SEQUENCE);
-
- ret = via_driver_irq_wait(dev, irqwait.request.irq, force_sequence,
- &irqwait.request.sequence);
- do_gettimeofday(&now);
- irqwait.reply.tval_sec = now.tv_sec;
- irqwait.reply.tval_usec = now.tv_usec;
-
- DRM_COPY_TO_USER_IOCTL(argp, irqwait, sizeof(irqwait));
-
- return ret;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 13:38:29 +0000