-/*
- planb - PlanB frame grabber driver
-
- PlanB is used in the 7x00/8x00 series of PowerMacintosh
- Computers as video input DMA controller.
-
- Copyright (C) 1998 Michel Lanners (mlan@cpu.lu)
-
- Based largely on the bttv driver by Ralph Metzler (rjkm@thp.uni-koeln.de)
-
- Additional debugging and coding by Takashi Oe (toe@unlserve.unl.edu)
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/* $Id: planb.c,v 1.18 1999/05/02 17:36:34 mlan Exp $ */
-
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/videodev.h>
-#include <media/v4l2-common.h>
-#include <linux/wait.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/dbdma.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/irq.h>
-#include <linux/mutex.h>
-
-#include "planb.h"
-#include "saa7196.h"
-
-/* Would you mind for some ugly debugging? */
-#if 0
-#define DEBUG(x...) printk(KERN_DEBUG ## x) /* Debug driver */
-#else
-#define DEBUG(x...) /* Don't debug driver */
-#endif
-
-#if 0
-#define IDEBUG(x...) printk(KERN_DEBUG ## x) /* Debug interrupt part */
-#else
-#define IDEBUG(x...) /* Don't debug interrupt part */
-#endif
-
-/* Ever seen a Mac with more than 1 of these? */
-#define PLANB_MAX 1
-
-static int planb_num;
-static struct planb planbs[PLANB_MAX];
-static volatile struct planb_registers *planb_regs;
-
-static int def_norm = PLANB_DEF_NORM; /* default norm */
-static int video_nr = -1;
-
-module_param(def_norm, int, 0);
-MODULE_PARM_DESC(def_norm, "Default startup norm (0=PAL, 1=NTSC, 2=SECAM)");
-module_param(video_nr, int, 0);
-MODULE_LICENSE("GPL");
-
-
-/* ------------------ PlanB Exported Functions ------------------ */
-static long planb_write(struct video_device *, const char *, unsigned long, int);
-static long planb_read(struct video_device *, char *, unsigned long, int);
-static int planb_open(struct video_device *, int);
-static void planb_close(struct video_device *);
-static int planb_ioctl(struct video_device *, unsigned int, void *);
-static int planb_init_done(struct video_device *);
-static int planb_mmap(struct video_device *, const char *, unsigned long);
-static void release_planb(void);
-int init_planbs(struct video_init *);
-
-/* ------------------ PlanB Internal Functions ------------------ */
-static int planb_prepare_open(struct planb *);
-static void planb_prepare_close(struct planb *);
-static void saa_write_reg(unsigned char, unsigned char);
-static unsigned char saa_status(int, struct planb *);
-static void saa_set(unsigned char, unsigned char, struct planb *);
-static void saa_init_regs(struct planb *);
-static int grabbuf_alloc(struct planb *);
-static int vgrab(struct planb *, struct video_mmap *);
-static void add_clip(struct planb *, struct video_clip *);
-static void fill_cmd_buff(struct planb *);
-static void cmd_buff(struct planb *);
-static volatile struct dbdma_cmd *setup_grab_cmd(int, struct planb *);
-static void overlay_start(struct planb *);
-static void overlay_stop(struct planb *);
-static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *, unsigned short,
- unsigned int);
-static inline void tab_cmd_store(volatile struct dbdma_cmd *, unsigned int,
- unsigned int);
-static inline void tab_cmd_gen(volatile struct dbdma_cmd *, unsigned short,
- unsigned short, unsigned int, unsigned int);
-static int init_planb(struct planb *);
-static int find_planb(void);
-static void planb_pre_capture(int, int, struct planb *);
-static volatile struct dbdma_cmd *cmd_geo_setup(volatile struct dbdma_cmd *,
- int, int, int, int, int, struct planb *);
-static inline void planb_dbdma_stop(volatile struct dbdma_regs *);
-static unsigned int saa_geo_setup(int, int, int, int, struct planb *);
-static inline int overlay_is_active(struct planb *);
-
-/*******************************/
-/* Memory management functions */
-/*******************************/
-
-static int grabbuf_alloc(struct planb *pb)
-{
- int i, npage;
-
- npage = MAX_GBUFFERS * ((PLANB_MAX_FBUF / PAGE_SIZE + 1)
-#ifndef PLANB_GSCANLINE
- + MAX_LNUM
-#endif /* PLANB_GSCANLINE */
- );
- if ((pb->rawbuf = kmalloc(npage
- * sizeof(unsigned long), GFP_KERNEL)) == 0)
- return -ENOMEM;
- for (i = 0; i < npage; i++) {
- pb->rawbuf[i] = (unsigned char *)__get_free_pages(GFP_KERNEL
- |GFP_DMA, 0);
- if (!pb->rawbuf[i])
- break;
- SetPageReserved(virt_to_page(pb->rawbuf[i]));
- }
- if (i-- < npage) {
- printk(KERN_DEBUG "PlanB: init_grab: grab buffer not allocated\n");
- for (; i > 0; i--) {
- ClearPageReserved(virt_to_page(pb->rawbuf[i]));
- free_pages((unsigned long)pb->rawbuf[i], 0);
- }
- kfree(pb->rawbuf);
- return -ENOBUFS;
- }
- pb->rawbuf_size = npage;
- return 0;
-}
-
-/*****************************/
-/* Hardware access functions */
-/*****************************/
-
-static void saa_write_reg(unsigned char addr, unsigned char val)
-{
- planb_regs->saa_addr = addr; eieio();
- planb_regs->saa_regval = val; eieio();
- return;
-}
-
-/* return status byte 0 or 1: */
-static unsigned char saa_status(int byte, struct planb *pb)
-{
- saa_regs[pb->win.norm][SAA7196_STDC] =
- (saa_regs[pb->win.norm][SAA7196_STDC] & ~2) | ((byte & 1) << 1);
- saa_write_reg (SAA7196_STDC, saa_regs[pb->win.norm][SAA7196_STDC]);
-
- /* Let's wait 30msec for this one */
- msleep_interruptible(30);
-
- return (unsigned char)in_8 (&planb_regs->saa_status);
-}
-
-static void saa_set(unsigned char addr, unsigned char val, struct planb *pb)
-{
- if(saa_regs[pb->win.norm][addr] != val) {
- saa_regs[pb->win.norm][addr] = val;
- saa_write_reg (addr, val);
- }
- return;
-}
-
-static void saa_init_regs(struct planb *pb)
-{
- int i;
-
- for (i = 0; i < SAA7196_NUMREGS; i++)
- saa_write_reg (i, saa_regs[pb->win.norm][i]);
-}
-
-static unsigned int saa_geo_setup(int width, int height, int interlace, int bpp,
- struct planb *pb)
-{
- int ht, norm = pb->win.norm;
-
- switch(bpp) {
- case 2:
- /* RGB555+a 1x16-bit + 16-bit transparent */
- saa_regs[norm][SAA7196_FMTS] &= ~0x3;
- break;
- case 1:
- case 4:
- /* RGB888 1x24-bit + 8-bit transparent */
- saa_regs[norm][SAA7196_FMTS] &= ~0x1;
- saa_regs[norm][SAA7196_FMTS] |= 0x2;
- break;
- default:
- return -EINVAL;
- }
- ht = (interlace ? height / 2 : height);
- saa_regs[norm][SAA7196_OUTPIX] = (unsigned char) (width & 0x00ff);
- saa_regs[norm][SAA7196_HFILT] = (saa_regs[norm][SAA7196_HFILT] & ~0x3)
- | (width >> 8 & 0x3);
- saa_regs[norm][SAA7196_OUTLINE] = (unsigned char) (ht & 0xff);
- saa_regs[norm][SAA7196_VYP] = (saa_regs[norm][SAA7196_VYP] & ~0x3)
- | (ht >> 8 & 0x3);
- /* feed both fields if interlaced, or else feed only even fields */
- saa_regs[norm][SAA7196_FMTS] = (interlace) ?
- (saa_regs[norm][SAA7196_FMTS] & ~0x60)
- : (saa_regs[norm][SAA7196_FMTS] | 0x60);
- /* transparent mode; extended format enabled */
- saa_regs[norm][SAA7196_DPATH] |= 0x3;
-
- return 0;
-}
-
-/***************************/
-/* DBDMA support functions */
-/***************************/
-
-static inline void planb_dbdma_restart(volatile struct dbdma_regs *ch)
-{
- out_le32(&ch->control, PLANB_CLR(RUN));
- out_le32(&ch->control, PLANB_SET(RUN|WAKE) | PLANB_CLR(PAUSE));
-}
-
-static inline void planb_dbdma_stop(volatile struct dbdma_regs *ch)
-{
- int i = 0;
-
- out_le32(&ch->control, PLANB_CLR(RUN) | PLANB_SET(FLUSH));
- while((in_le32(&ch->status) == (ACTIVE | FLUSH)) && (i < 999)) {
- IDEBUG("PlanB: waiting for DMA to stop\n");
- i++;
- }
-}
-
-static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *ch,
- unsigned short command, unsigned int cmd_dep)
-{
- st_le16(&ch->command, command);
- st_le32(&ch->cmd_dep, cmd_dep);
-}
-
-static inline void tab_cmd_store(volatile struct dbdma_cmd *ch,
- unsigned int phy_addr, unsigned int cmd_dep)
-{
- st_le16(&ch->command, STORE_WORD | KEY_SYSTEM);
- st_le16(&ch->req_count, 4);
- st_le32(&ch->phy_addr, phy_addr);
- st_le32(&ch->cmd_dep, cmd_dep);
-}
-
-static inline void tab_cmd_gen(volatile struct dbdma_cmd *ch,
- unsigned short command, unsigned short req_count,
- unsigned int phy_addr, unsigned int cmd_dep)
-{
- st_le16(&ch->command, command);
- st_le16(&ch->req_count, req_count);
- st_le32(&ch->phy_addr, phy_addr);
- st_le32(&ch->cmd_dep, cmd_dep);
-}
-
-static volatile struct dbdma_cmd *cmd_geo_setup(
- volatile struct dbdma_cmd *c1, int width, int height, int interlace,
- int bpp, int clip, struct planb *pb)
-{
- int norm = pb->win.norm;
-
- if((saa_geo_setup(width, height, interlace, bpp, pb)) != 0)
- return (volatile struct dbdma_cmd *)NULL;
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
- SAA7196_FMTS);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
- saa_regs[norm][SAA7196_FMTS]);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
- SAA7196_DPATH);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
- saa_regs[norm][SAA7196_DPATH]);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->even),
- bpp | ((clip)? PLANB_CLIPMASK: 0));
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->odd),
- bpp | ((clip)? PLANB_CLIPMASK: 0));
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
- SAA7196_OUTPIX);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
- saa_regs[norm][SAA7196_OUTPIX]);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
- SAA7196_HFILT);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
- saa_regs[norm][SAA7196_HFILT]);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
- SAA7196_OUTLINE);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
- saa_regs[norm][SAA7196_OUTLINE]);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
- SAA7196_VYP);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
- saa_regs[norm][SAA7196_VYP]);
- return c1;
-}
-
-/******************************/
-/* misc. supporting functions */
-/******************************/
-
-static inline void planb_lock(struct planb *pb)
-{
- mutex_lock(&pb->lock);
-}
-
-static inline void planb_unlock(struct planb *pb)
-{
- mutex_unlock(&pb->lock);
-}
-
-/***************/
-/* Driver Core */
-/***************/
-
-static int planb_prepare_open(struct planb *pb)
-{
- int i, size;
-
- /* allocate memory for two plus alpha command buffers (size: max lines,
- plus 40 commands handling, plus 1 alignment), plus dummy command buf,
- plus clipmask buffer, plus frame grabbing status */
- size = (pb->tab_size*(2+MAX_GBUFFERS*TAB_FACTOR)+1+MAX_GBUFFERS
- * PLANB_DUMMY)*sizeof(struct dbdma_cmd)
- +(PLANB_MAXLINES*((PLANB_MAXPIXELS+7)& ~7))/8
- +MAX_GBUFFERS*sizeof(unsigned int);
- if ((pb->priv_space = kzalloc (size, GFP_KERNEL)) == 0)
- return -ENOMEM;
- pb->overlay_last1 = pb->ch1_cmd = (volatile struct dbdma_cmd *)
- DBDMA_ALIGN (pb->priv_space);
- pb->overlay_last2 = pb->ch2_cmd = pb->ch1_cmd + pb->tab_size;
- pb->ch1_cmd_phys = virt_to_bus(pb->ch1_cmd);
- pb->cap_cmd[0] = pb->ch2_cmd + pb->tab_size;
- pb->pre_cmd[0] = pb->cap_cmd[0] + pb->tab_size * TAB_FACTOR;
- for (i = 1; i < MAX_GBUFFERS; i++) {
- pb->cap_cmd[i] = pb->pre_cmd[i-1] + PLANB_DUMMY;
- pb->pre_cmd[i] = pb->cap_cmd[i] + pb->tab_size * TAB_FACTOR;
- }
- pb->frame_stat=(volatile unsigned int *)(pb->pre_cmd[MAX_GBUFFERS-1]
- + PLANB_DUMMY);
- pb->mask = (unsigned char *)(pb->frame_stat+MAX_GBUFFERS);
-
- pb->rawbuf = NULL;
- pb->rawbuf_size = 0;
- pb->grabbing = 0;
- for (i = 0; i < MAX_GBUFFERS; i++) {
- pb->frame_stat[i] = GBUFFER_UNUSED;
- pb->gwidth[i] = 0;
- pb->gheight[i] = 0;
- pb->gfmt[i] = 0;
- pb->gnorm_switch[i] = 0;
-#ifndef PLANB_GSCANLINE
- pb->lsize[i] = 0;
- pb->lnum[i] = 0;
-#endif /* PLANB_GSCANLINE */
- }
- pb->gcount = 0;
- pb->suspend = 0;
- pb->last_fr = -999;
- pb->prev_last_fr = -999;
-
- /* Reset DMA controllers */
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
-
- return 0;
-}
-
-static void planb_prepare_close(struct planb *pb)
-{
- int i;
-
- /* make sure the dma's are idle */
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
- /* free kernel memory of command buffers */
- if(pb->priv_space != 0) {
- kfree (pb->priv_space);
- pb->priv_space = 0;
- pb->cmd_buff_inited = 0;
- }
- if(pb->rawbuf) {
- for (i = 0; i < pb->rawbuf_size; i++) {
- ClearPageReserved(virt_to_page(pb->rawbuf[i]));
- free_pages((unsigned long)pb->rawbuf[i], 0);
- }
- kfree(pb->rawbuf);
- }
- pb->rawbuf = NULL;
-}
-
-/*****************************/
-/* overlay support functions */
-/*****************************/
-
-static inline int overlay_is_active(struct planb *pb)
-{
- unsigned int size = pb->tab_size * sizeof(struct dbdma_cmd);
- unsigned int caddr = (unsigned)in_le32(&pb->planb_base->ch1.cmdptr);
-
- return (in_le32(&pb->overlay_last1->cmd_dep) == pb->ch1_cmd_phys)
- && (caddr < (pb->ch1_cmd_phys + size))
- && (caddr >= (unsigned)pb->ch1_cmd_phys);
-}
-
-static void overlay_start(struct planb *pb)
-{
-
- DEBUG("PlanB: overlay_start()\n");
-
- if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
-
- DEBUG("PlanB: presumably, grabbing is in progress...\n");
-
- planb_dbdma_stop(&pb->planb_base->ch2);
- out_le32 (&pb->planb_base->ch2.cmdptr,
- virt_to_bus(pb->ch2_cmd));
- planb_dbdma_restart(&pb->planb_base->ch2);
- st_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
- tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->ch1_cmd));
- eieio();
- pb->prev_last_fr = pb->last_fr;
- pb->last_fr = -2;
- if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
- IDEBUG("PlanB: became inactive "
- "in the mean time... reactivating\n");
- planb_dbdma_stop(&pb->planb_base->ch1);
- out_le32 (&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->ch1_cmd));
- planb_dbdma_restart(&pb->planb_base->ch1);
- }
- } else {
-
- DEBUG("PlanB: currently idle, so can do whatever\n");
-
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
- st_le32 (&pb->planb_base->ch2.cmdptr,
- virt_to_bus(pb->ch2_cmd));
- st_le32 (&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->ch1_cmd));
- out_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
- planb_dbdma_restart(&pb->planb_base->ch2);
- planb_dbdma_restart(&pb->planb_base->ch1);
- pb->last_fr = -1;
- }
- return;
-}
-
-static void overlay_stop(struct planb *pb)
-{
- DEBUG("PlanB: overlay_stop()\n");
-
- if(pb->last_fr == -1) {
-
- DEBUG("PlanB: no grabbing, it seems...\n");
-
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
- pb->last_fr = -999;
- } else if(pb->last_fr == -2) {
- unsigned int cmd_dep;
- tab_cmd_dbdma(pb->cap_cmd[pb->prev_last_fr], DBDMA_STOP, 0);
- eieio();
- cmd_dep = (unsigned int)in_le32(&pb->overlay_last1->cmd_dep);
- if(overlay_is_active(pb)) {
-
- DEBUG("PlanB: overlay is currently active\n");
-
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
- if(cmd_dep != pb->ch1_cmd_phys) {
- out_le32(&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->overlay_last1));
- planb_dbdma_restart(&pb->planb_base->ch1);
- }
- }
- pb->last_fr = pb->prev_last_fr;
- pb->prev_last_fr = -999;
- }
- return;
-}
-
-static void suspend_overlay(struct planb *pb)
-{
- int fr = -1;
- struct dbdma_cmd last;
-
- DEBUG("PlanB: suspend_overlay: %d\n", pb->suspend);
-
- if(pb->suspend++)
- return;
- if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
- if(pb->last_fr == -2) {
- fr = pb->prev_last_fr;
- memcpy(&last, (void*)pb->last_cmd[fr], sizeof(last));
- tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
- }
- if(overlay_is_active(pb)) {
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
- pb->suspended.overlay = 1;
- pb->suspended.frame = fr;
- memcpy(&pb->suspended.cmd, &last, sizeof(last));
- return;
- }
- }
- pb->suspended.overlay = 0;
- pb->suspended.frame = fr;
- memcpy(&pb->suspended.cmd, &last, sizeof(last));
- return;
-}
-
-static void resume_overlay(struct planb *pb)
-{
-
- DEBUG("PlanB: resume_overlay: %d\n", pb->suspend);
-
- if(pb->suspend > 1)
- return;
- if(pb->suspended.frame != -1) {
- memcpy((void*)pb->last_cmd[pb->suspended.frame],
- &pb->suspended.cmd, sizeof(pb->suspended.cmd));
- }
- if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
- goto finish;
- }
- if(pb->suspended.overlay) {
-
- DEBUG("PlanB: overlay being resumed\n");
-
- st_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
- st_le16 (&pb->ch2_cmd->command, DBDMA_NOP);
- /* Set command buffer addresses */
- st_le32(&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->overlay_last1));
- out_le32(&pb->planb_base->ch2.cmdptr,
- virt_to_bus(pb->overlay_last2));
- /* Start the DMA controller */
- out_le32 (&pb->planb_base->ch2.control,
- PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
- out_le32 (&pb->planb_base->ch1.control,
- PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
- } else if(pb->suspended.frame != -1) {
- out_le32(&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->last_cmd[pb->suspended.frame]));
- out_le32 (&pb->planb_base->ch1.control,
- PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
- }
-
-finish:
- pb->suspend--;
- wake_up_interruptible(&pb->suspendq);
-}
-
-static void add_clip(struct planb *pb, struct video_clip *clip)
-{
- volatile unsigned char *base;
- int xc = clip->x, yc = clip->y;
- int wc = clip->width, hc = clip->height;
- int ww = pb->win.width, hw = pb->win.height;
- int x, y, xtmp1, xtmp2;
-
- DEBUG("PlanB: clip %dx%d+%d+%d\n", wc, hc, xc, yc);
-
- if(xc < 0) {
- wc += xc;
- xc = 0;
- }
- if(yc < 0) {
- hc += yc;
- yc = 0;
- }
- if(xc + wc > ww)
- wc = ww - xc;
- if(wc <= 0) /* Nothing to do */
- return;
- if(yc + hc > hw)
- hc = hw - yc;
-
- for (y = yc; y < yc+hc; y++) {
- xtmp1=xc>>3;
- xtmp2=(xc+wc)>>3;
- base = pb->mask + y*96;
- if(xc != 0 || wc >= 8)
- *(base + xtmp1) &= (unsigned char)(0x00ff &
- (0xff00 >> (xc&7)));
- for (x = xtmp1 + 1; x < xtmp2; x++) {
- *(base + x) = 0;
- }
- if(xc < (ww & ~0x7))
- *(base + xtmp2) &= (unsigned char)(0x00ff >>
- ((xc+wc) & 7));
- }
-
- return;
-}
-
-static void fill_cmd_buff(struct planb *pb)
-{
- int restore = 0;
- volatile struct dbdma_cmd last;
-
- DEBUG("PlanB: fill_cmd_buff()\n");
-
- if(pb->overlay_last1 != pb->ch1_cmd) {
- restore = 1;
- last = *(pb->overlay_last1);
- }
- memset ((void *) pb->ch1_cmd, 0, 2 * pb->tab_size
- * sizeof(struct dbdma_cmd));
- cmd_buff (pb);
- if(restore)
- *(pb->overlay_last1) = last;
- if(pb->suspended.overlay) {
- unsigned long jump_addr = in_le32(&pb->overlay_last1->cmd_dep);
- if(jump_addr != pb->ch1_cmd_phys) {
- int i;
-
- DEBUG("PlanB: adjusting ch1's jump address\n");
-
- for(i = 0; i < MAX_GBUFFERS; i++) {
- if(pb->need_pre_capture[i]) {
- if(jump_addr == virt_to_bus(pb->pre_cmd[i]))
- goto found;
- } else {
- if(jump_addr == virt_to_bus(pb->cap_cmd[i]))
- goto found;
- }
- }
-
- DEBUG("PlanB: not found...\n");
-
- goto out;
-found:
- if(pb->need_pre_capture[i])
- out_le32(&pb->pre_cmd[i]->phy_addr,
- virt_to_bus(pb->overlay_last1));
- else
- out_le32(&pb->cap_cmd[i]->phy_addr,
- virt_to_bus(pb->overlay_last1));
- }
- }
-out:
- pb->cmd_buff_inited = 1;
-
- return;
-}
-
-static void cmd_buff(struct planb *pb)
-{
- int i, bpp, count, nlines, stepsize, interlace;
- unsigned long base, jump, addr_com, addr_dep;
- volatile struct dbdma_cmd *c1 = pb->ch1_cmd;
- volatile struct dbdma_cmd *c2 = pb->ch2_cmd;
-
- interlace = pb->win.interlace;
- bpp = pb->win.bpp;
- count = (bpp * ((pb->win.x + pb->win.width > pb->win.swidth) ?
- (pb->win.swidth - pb->win.x) : pb->win.width));
- nlines = ((pb->win.y + pb->win.height > pb->win.sheight) ?
- (pb->win.sheight - pb->win.y) : pb->win.height);
-
- /* Do video in: */
-
- /* Preamble commands: */
- addr_com = virt_to_bus(c1);
- addr_dep = virt_to_bus(&c1->cmd_dep);
- tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
- jump = virt_to_bus(c1+16); /* 14 by cmd_geo_setup() and 2 for padding */
- if((c1 = cmd_geo_setup(c1, pb->win.width, pb->win.height, interlace,
- bpp, 1, pb)) == NULL) {
- printk(KERN_WARNING "PlanB: encountered serious problems\n");
- tab_cmd_dbdma(pb->ch1_cmd + 1, DBDMA_STOP, 0);
- tab_cmd_dbdma(pb->ch2_cmd + 1, DBDMA_STOP, 0);
- return;
- }
- tab_cmd_store(c1++, addr_com, (unsigned)(DBDMA_NOP | BR_ALWAYS) << 16);
- tab_cmd_store(c1++, addr_dep, jump);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
- PLANB_SET(FIELD_SYNC));
- /* (1) wait for field sync to be set */
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(ODD_FIELD));
- /* wait for field sync to be cleared */
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
- /* if not odd field, wait until field sync is set again */
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
- /* assert ch_sync to ch2 */
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control),
- PLANB_SET(CH_SYNC));
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(DMA_ABORT));
-
- base = (pb->frame_buffer_phys + pb->offset + pb->win.y * (pb->win.bpl
- + pb->win.pad) + pb->win.x * bpp);
-
- if (interlace) {
- stepsize = 2;
- jump = virt_to_bus(c1 + (nlines + 1) / 2);
- } else {
- stepsize = 1;
- jump = virt_to_bus(c1 + nlines);
- }
-
- /* even field data: */
- for (i=0; i < nlines; i += stepsize, c1++)
- tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET,
- count, base + i * (pb->win.bpl + pb->win.pad), jump);
-
- /* For non-interlaced, we use even fields only */
- if (!interlace)
- goto cmd_tab_data_end;
-
- /* Resync to odd field */
- /* (2) wait for field sync to be set */
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(ODD_FIELD));
- /* wait for field sync to be cleared */
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
- /* if not odd field, wait until field sync is set again */
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
- /* assert ch_sync to ch2 */
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control),
- PLANB_SET(CH_SYNC));
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(DMA_ABORT));
-
- /* odd field data: */
- jump = virt_to_bus(c1 + nlines / 2);
- for (i=1; i < nlines; i += stepsize, c1++)
- tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
- base + i * (pb->win.bpl + pb->win.pad), jump);
-
- /* And jump back to the start */
-cmd_tab_data_end:
- pb->overlay_last1 = c1; /* keep a pointer to the last command */
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch1_cmd));
-
- /* Clipmask command buffer */
-
- /* Preamble commands: */
- tab_cmd_dbdma(c2++, DBDMA_NOP, 0);
- tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel),
- PLANB_SET(CH_SYNC));
- /* wait until ch1 asserts ch_sync */
- tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0);
- /* clear ch_sync asserted by ch1 */
- tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.control),
- PLANB_CLR(CH_SYNC));
- tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel),
- PLANB_SET(FIELD_SYNC));
- tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
- PLANB_SET(ODD_FIELD));
-
- /* jump to end of even field if appropriate */
- /* this points to (interlace)? pos. C: pos. B */
- jump = (interlace) ? virt_to_bus(c2 + (nlines + 1) / 2 + 2):
- virt_to_bus(c2 + nlines + 2);
- /* if odd field, skip over to odd field clipmasking */
- tab_cmd_dbdma(c2++, DBDMA_NOP | BR_IFSET, jump);
-
- /* even field mask: */
- tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
- PLANB_SET(DMA_ABORT));
- /* this points to pos. B */
- jump = (interlace) ? virt_to_bus(c2 + nlines + 1):
- virt_to_bus(c2 + nlines);
- base = virt_to_bus(pb->mask);
- for (i=0; i < nlines; i += stepsize, c2++)
- tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96,
- base + i * 96, jump);
-
- /* For non-interlaced, we use only even fields */
- if(!interlace)
- goto cmd_tab_mask_end;
-
- /* odd field mask: */
-/* C */ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
- PLANB_SET(DMA_ABORT));
- /* this points to pos. B */
- jump = virt_to_bus(c2 + nlines / 2);
- base = virt_to_bus(pb->mask);
- for (i=1; i < nlines; i += 2, c2++) /* abort if set */
- tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96,
- base + i * 96, jump);
-
- /* Inform channel 1 and jump back to start */
-cmd_tab_mask_end:
- /* ok, I just realized this is kind of flawed. */
- /* this part is reached only after odd field clipmasking. */
- /* wanna clean up? */
- /* wait for field sync to be set */
- /* corresponds to fsync (1) of ch1 */
-/* B */ tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0);
- /* restart ch1, meant to clear any dead bit or something */
- tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control),
- PLANB_CLR(RUN));
- tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control),
- PLANB_SET(RUN));
- pb->overlay_last2 = c2; /* keep a pointer to the last command */
- /* start over even field clipmasking */
- tab_cmd_dbdma(c2, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch2_cmd));
-
- eieio();
- return;
-}
-
-/*********************************/
-/* grabdisplay support functions */
-/*********************************/
-
-static int palette2fmt[] = {
- 0,
- PLANB_GRAY,
- 0,
- 0,
- 0,
- PLANB_COLOUR32,
- PLANB_COLOUR15,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
-};
-
-#define PLANB_PALETTE_MAX 15
-
-static int vgrab(struct planb *pb, struct video_mmap *mp)
-{
- unsigned int fr = mp->frame;
- unsigned int format;
-
- if(pb->rawbuf==NULL) {
- int err;
- if((err=grabbuf_alloc(pb)))
- return err;
- }
-
- IDEBUG("PlanB: grab %d: %dx%d(%u)\n", pb->grabbing,
- mp->width, mp->height, fr);
-
- if(pb->grabbing >= MAX_GBUFFERS)
- return -ENOBUFS;
- if(fr > (MAX_GBUFFERS - 1) || fr < 0)
- return -EINVAL;
- if(mp->height <= 0 || mp->width <= 0)
- return -EINVAL;
- if(mp->format < 0 || mp->format >= PLANB_PALETTE_MAX)
- return -EINVAL;
- if((format = palette2fmt[mp->format]) == 0)
- return -EINVAL;
- if (mp->height * mp->width * format > PLANB_MAX_FBUF) /* format = bpp */
- return -EINVAL;
-
- planb_lock(pb);
- if(mp->width != pb->gwidth[fr] || mp->height != pb->gheight[fr] ||
- format != pb->gfmt[fr] || (pb->gnorm_switch[fr])) {
- int i;
-#ifndef PLANB_GSCANLINE
- unsigned int osize = pb->gwidth[fr] * pb->gheight[fr]
- * pb->gfmt[fr];
- unsigned int nsize = mp->width * mp->height * format;
-#endif
-
- IDEBUG("PlanB: gwidth = %d, gheight = %d, mp->format = %u\n",
- mp->width, mp->height, mp->format);
-
-#ifndef PLANB_GSCANLINE
- if(pb->gnorm_switch[fr])
- nsize = 0;
- if (nsize < osize) {
- for(i = pb->gbuf_idx[fr]; osize > 0; i++) {
- memset((void *)pb->rawbuf[i], 0, PAGE_SIZE);
- osize -= PAGE_SIZE;
- }
- }
- for(i = pb->l_fr_addr_idx[fr]; i < pb->l_fr_addr_idx[fr]
- + pb->lnum[fr]; i++)
- memset((void *)pb->rawbuf[i], 0, PAGE_SIZE);
-#else
-/* XXX TODO */
-/*
- if(pb->gnorm_switch[fr])
- memset((void *)pb->gbuffer[fr], 0,
- pb->gbytes_per_line * pb->gheight[fr]);
- else {
- if(mp->
- for(i = 0; i < pb->gheight[fr]; i++) {
- memset((void *)(pb->gbuffer[fr]
- + pb->gbytes_per_line * i
- }
- }
-*/
-#endif
- pb->gwidth[fr] = mp->width;
- pb->gheight[fr] = mp->height;
- pb->gfmt[fr] = format;
- pb->last_cmd[fr] = setup_grab_cmd(fr, pb);
- planb_pre_capture(fr, pb->gfmt[fr], pb); /* gfmt = bpp */
- pb->need_pre_capture[fr] = 1;
- pb->gnorm_switch[fr] = 0;
- } else
- pb->need_pre_capture[fr] = 0;
- pb->frame_stat[fr] = GBUFFER_GRABBING;
- if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
-
- IDEBUG("PlanB: ch1 inactive, initiating grabbing\n");
-
- planb_dbdma_stop(&pb->planb_base->ch1);
- if(pb->need_pre_capture[fr]) {
-
- IDEBUG("PlanB: padding pre-capture sequence\n");
-
- out_le32 (&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->pre_cmd[fr]));
- } else {
- tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
- tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
- /* let's be on the safe side. here is not timing critical. */
- tab_cmd_dbdma((pb->cap_cmd[fr] + 1), DBDMA_NOP, 0);
- out_le32 (&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->cap_cmd[fr]));
- }
- planb_dbdma_restart(&pb->planb_base->ch1);
- pb->last_fr = fr;
- } else {
- int i;
-
- IDEBUG("PlanB: ch1 active, grabbing being queued\n");
-
- if((pb->last_fr == -1) || ((pb->last_fr == -2) &&
- overlay_is_active(pb))) {
-
- IDEBUG("PlanB: overlay is active, grabbing defered\n");
-
- tab_cmd_dbdma(pb->last_cmd[fr],
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->ch1_cmd));
- if(pb->need_pre_capture[fr]) {
-
- IDEBUG("PlanB: padding pre-capture sequence\n");
-
- tab_cmd_store(pb->pre_cmd[fr],
- virt_to_bus(&pb->overlay_last1->cmd_dep),
- virt_to_bus(pb->ch1_cmd));
- eieio();
- out_le32 (&pb->overlay_last1->cmd_dep,
- virt_to_bus(pb->pre_cmd[fr]));
- } else {
- tab_cmd_store(pb->cap_cmd[fr],
- virt_to_bus(&pb->overlay_last1->cmd_dep),
- virt_to_bus(pb->ch1_cmd));
- tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
- DBDMA_NOP, 0);
- eieio();
- out_le32 (&pb->overlay_last1->cmd_dep,
- virt_to_bus(pb->cap_cmd[fr]));
- }
- for(i = 0; overlay_is_active(pb) && i < 999; i++)
- IDEBUG("PlanB: waiting for overlay done\n");
- tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0);
- pb->prev_last_fr = fr;
- pb->last_fr = -2;
- } else if(pb->last_fr == -2) {
-
- IDEBUG("PlanB: mixed mode detected, grabbing"
- " will be done before activating overlay\n");
-
- tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0);
- if(pb->need_pre_capture[fr]) {
-
- IDEBUG("PlanB: padding pre-capture sequence\n");
-
- tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr],
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->pre_cmd[fr]));
- eieio();
- } else {
- tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
- if(pb->gwidth[pb->prev_last_fr] !=
- pb->gwidth[fr]
- || pb->gheight[pb->prev_last_fr] !=
- pb->gheight[fr]
- || pb->gfmt[pb->prev_last_fr] !=
- pb->gfmt[fr])
- tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
- DBDMA_NOP, 0);
- else
- tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->cap_cmd[fr] + 16));
- tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr],
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->cap_cmd[fr]));
- eieio();
- }
- tab_cmd_dbdma(pb->last_cmd[fr],
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->ch1_cmd));
- eieio();
- pb->prev_last_fr = fr;
- pb->last_fr = -2;
- } else {
-
- IDEBUG("PlanB: active grabbing session detected\n");
-
- if(pb->need_pre_capture[fr]) {
-
- IDEBUG("PlanB: padding pre-capture sequence\n");
-
- tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->pre_cmd[fr]));
- eieio();
- } else {
- tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
- tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
- if(pb->gwidth[pb->last_fr] != pb->gwidth[fr]
- || pb->gheight[pb->last_fr] !=
- pb->gheight[fr]
- || pb->gfmt[pb->last_fr] !=
- pb->gfmt[fr])
- tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
- DBDMA_NOP, 0);
- else
- tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->cap_cmd[fr] + 16));
- tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
- DBDMA_NOP | BR_ALWAYS,
- virt_to_bus(pb->cap_cmd[fr]));
- eieio();
- }
- pb->last_fr = fr;
- }
- if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
-
- IDEBUG("PlanB: became inactive in the mean time..."
- "reactivating\n");
-
- planb_dbdma_stop(&pb->planb_base->ch1);
- out_le32 (&pb->planb_base->ch1.cmdptr,
- virt_to_bus(pb->cap_cmd[fr]));
- planb_dbdma_restart(&pb->planb_base->ch1);
- }
- }
- pb->grabbing++;
- planb_unlock(pb);
-
- return 0;
-}
-
-static void planb_pre_capture(int fr, int bpp, struct planb *pb)
-{
- volatile struct dbdma_cmd *c1 = pb->pre_cmd[fr];
- int interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0;
-
- tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
- if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace,
- bpp, 0, pb)) == NULL) {
- printk(KERN_WARNING "PlanB: encountered some problems\n");
- tab_cmd_dbdma(pb->pre_cmd[fr] + 1, DBDMA_STOP, 0);
- return;
- }
- /* Sync to even field */
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
- PLANB_SET(FIELD_SYNC));
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(ODD_FIELD));
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
- tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(DMA_ABORT));
- /* For non-interlaced, we use even fields only */
- if (pb->gheight[fr] <= pb->maxlines/2)
- goto cmd_tab_data_end;
- /* Sync to odd field */
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(ODD_FIELD));
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(DMA_ABORT));
-cmd_tab_data_end:
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->cap_cmd[fr]));
-
- eieio();
-}
-
-static volatile struct dbdma_cmd *setup_grab_cmd(int fr, struct planb *pb)
-{
- int i, bpp, count, nlines, stepsize, interlace;
-#ifdef PLANB_GSCANLINE
- int scanline;
-#else
- int nlpp, leftover1;
- unsigned long base;
-#endif
- unsigned long jump;
- int pagei;
- volatile struct dbdma_cmd *c1;
- volatile struct dbdma_cmd *jump_addr;
-
- c1 = pb->cap_cmd[fr];
- interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0;
- bpp = pb->gfmt[fr]; /* gfmt = bpp */
- count = bpp * pb->gwidth[fr];
- nlines = pb->gheight[fr];
-#ifdef PLANB_GSCANLINE
- scanline = pb->gbytes_per_line;
-#else
- pb->lsize[fr] = count;
- pb->lnum[fr] = 0;
-#endif
-
- /* Do video in: */
-
- /* Preamble commands: */
- tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(c1 + 16)); c1++;
- if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace,
- bpp, 0, pb)) == NULL) {
- printk(KERN_WARNING "PlanB: encountered serious problems\n");
- tab_cmd_dbdma(pb->cap_cmd[fr] + 1, DBDMA_STOP, 0);
- return (pb->cap_cmd[fr] + 2);
- }
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
- PLANB_SET(FIELD_SYNC));
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(ODD_FIELD));
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
- tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(DMA_ABORT));
-
- if (interlace) {
- stepsize = 2;
- jump_addr = c1 + TAB_FACTOR * (nlines + 1) / 2;
- } else {
- stepsize = 1;
- jump_addr = c1 + TAB_FACTOR * nlines;
- }
- jump = virt_to_bus(jump_addr);
-
- /* even field data: */
-
- pagei = pb->gbuf_idx[fr];
-#ifdef PLANB_GSCANLINE
- for (i = 0; i < nlines; i += stepsize) {
- tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
- virt_to_bus(pb->rawbuf[pagei
- + i * scanline / PAGE_SIZE]), jump);
- }
-#else
- i = 0;
- leftover1 = 0;
- do {
- int j;
-
- base = virt_to_bus(pb->rawbuf[pagei]);
- nlpp = (PAGE_SIZE - leftover1) / count / stepsize;
- for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++)
- tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET,
- count, base + count * j * stepsize + leftover1, jump);
- if(i < nlines) {
- int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1;
-
- if(lov0 == 0)
- leftover1 = 0;
- else {
- if(lov0 >= count) {
- tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, base
- + count * nlpp * stepsize + leftover1, jump);
- } else {
- pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei]
- + count * nlpp * stepsize + leftover1;
- pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1;
- pb->l_to_next_size[fr][pb->lnum[fr]] = count - lov0;
- tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
- virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr]
- + pb->lnum[fr]]), jump);
- if(++pb->lnum[fr] > MAX_LNUM)
- pb->lnum[fr]--;
- }
- leftover1 = count * stepsize - lov0;
- i += stepsize;
- }
- }
- pagei++;
- } while(i < nlines);
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump);
- c1 = jump_addr;
-#endif /* PLANB_GSCANLINE */
-
- /* For non-interlaced, we use even fields only */
- if (!interlace)
- goto cmd_tab_data_end;
-
- /* Sync to odd field */
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(ODD_FIELD));
- tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
- PLANB_SET(DMA_ABORT));
-
- /* odd field data: */
- jump_addr = c1 + TAB_FACTOR * nlines / 2;
- jump = virt_to_bus(jump_addr);
-#ifdef PLANB_GSCANLINE
- for (i = 1; i < nlines; i += stepsize) {
- tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
- virt_to_bus(pb->rawbuf[pagei
- + i * scanline / PAGE_SIZE]), jump);
- }
-#else
- i = 1;
- leftover1 = 0;
- pagei = pb->gbuf_idx[fr];
- if(nlines <= 1)
- goto skip;
- do {
- int j;
-
- base = virt_to_bus(pb->rawbuf[pagei]);
- nlpp = (PAGE_SIZE - leftover1) / count / stepsize;
- if(leftover1 >= count) {
- tab_cmd_gen(c1++, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
- base + leftover1 - count, jump);
- i += stepsize;
- }
- for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++)
- tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
- base + count * (j * stepsize + 1) + leftover1, jump);
- if(i < nlines) {
- int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1;
-
- if(lov0 == 0)
- leftover1 = 0;
- else {
- if(lov0 > count) {
- pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei]
- + count * (nlpp * stepsize + 1) + leftover1;
- pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1;
- pb->l_to_next_size[fr][pb->lnum[fr]] = count * stepsize
- - lov0;
- tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
- virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr]
- + pb->lnum[fr]]), jump);
- if(++pb->lnum[fr] > MAX_LNUM)
- pb->lnum[fr]--;
- i += stepsize;
- }
- leftover1 = count * stepsize - lov0;
- }
- }
- pagei++;
- } while(i < nlines);
-skip:
- tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump);
- c1 = jump_addr;
-#endif /* PLANB_GSCANLINE */
-
-cmd_tab_data_end:
- tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->intr_stat),
- (fr << 9) | PLANB_FRM_IRQ | PLANB_GEN_IRQ);
- /* stop it */
- tab_cmd_dbdma(c1, DBDMA_STOP, 0);
-
- eieio();
- return c1;
-}
-
-static irqreturn_t planb_irq(int irq, void *dev_id)
-{
- unsigned int stat, astat;
- struct planb *pb = (struct planb *)dev_id;
-
- IDEBUG("PlanB: planb_irq()\n");
-
- /* get/clear interrupt status bits */
- eieio();
- stat = in_le32(&pb->planb_base->intr_stat);
- astat = stat & pb->intr_mask;
- out_le32(&pb->planb_base->intr_stat, PLANB_FRM_IRQ
- & ~astat & stat & ~PLANB_GEN_IRQ);
- IDEBUG("PlanB: stat = %X, astat = %X\n", stat, astat);
-
- if(astat & PLANB_FRM_IRQ) {
- unsigned int fr = stat >> 9;
-#ifndef PLANB_GSCANLINE
- int i;
-#endif
- IDEBUG("PlanB: PLANB_FRM_IRQ\n");
-
- pb->gcount++;
-
- IDEBUG("PlanB: grab %d: fr = %d, gcount = %d\n",
- pb->grabbing, fr, pb->gcount);
-#ifndef PLANB_GSCANLINE
- IDEBUG("PlanB: %d * %d bytes are being copied over\n",
- pb->lnum[fr], pb->lsize[fr]);
- for(i = 0; i < pb->lnum[fr]; i++) {
- int first = pb->lsize[fr] - pb->l_to_next_size[fr][i];
-
- memcpy(pb->l_to_addr[fr][i],
- pb->rawbuf[pb->l_fr_addr_idx[fr] + i],
- first);
- memcpy(pb->rawbuf[pb->l_to_next_idx[fr][i]],
- pb->rawbuf[pb->l_fr_addr_idx[fr] + i] + first,
- pb->l_to_next_size[fr][i]);
- }
-#endif
- pb->frame_stat[fr] = GBUFFER_DONE;
- pb->grabbing--;
- wake_up_interruptible(&pb->capq);
- return IRQ_HANDLED;
- }
- /* incorrect interrupts? */
- pb->intr_mask = PLANB_CLR_IRQ;
- out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
- printk(KERN_ERR "PlanB: IRQ lockup, cleared intrrupts"
- " unconditionally\n");
- return IRQ_HANDLED;
-}
-
-/*******************************
- * Device Operations functions *
- *******************************/
-
-static int planb_open(struct video_device *dev, int mode)
-{
- struct planb *pb = (struct planb *)dev;
-
- if (pb->user == 0) {
- int err;
- if((err = planb_prepare_open(pb)) != 0)
- return err;
- }
- pb->user++;
-
- DEBUG("PlanB: device opened\n");
- return 0;
-}
-
-static void planb_close(struct video_device *dev)
-{
- struct planb *pb = (struct planb *)dev;
-
- if(pb->user < 1) /* ??? */
- return;
- planb_lock(pb);
- if (pb->user == 1) {
- if (pb->overlay) {
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
- pb->overlay = 0;
- }
- planb_prepare_close(pb);
- }
- pb->user--;
- planb_unlock(pb);
-
- DEBUG("PlanB: device closed\n");
-}
-
-static long planb_read(struct video_device *v, char *buf, unsigned long count,
- int nonblock)
-{
- DEBUG("planb: read request\n");
- return -EINVAL;
-}
-
-static long planb_write(struct video_device *v, const char *buf,
- unsigned long count, int nonblock)
-{
- DEBUG("planb: write request\n");
- return -EINVAL;
-}
-
-static int planb_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
- struct planb *pb=(struct planb *)dev;
-
- switch (cmd)
- {
- case VIDIOCGCAP:
- {
- struct video_capability b;
-
- DEBUG("PlanB: IOCTL VIDIOCGCAP\n");
-
- strcpy (b.name, pb->video_dev.name);
- b.type = VID_TYPE_OVERLAY | VID_TYPE_CLIPPING |
- VID_TYPE_FRAMERAM | VID_TYPE_SCALES |
- VID_TYPE_CAPTURE;
- b.channels = 2; /* composite & svhs */
- b.audios = 0;
- b.maxwidth = PLANB_MAXPIXELS;
- b.maxheight = PLANB_MAXLINES;
- b.minwidth = 32; /* wild guess */
- b.minheight = 32;
- if (copy_to_user(arg,&b,sizeof(b)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCSFBUF:
- {
- struct video_buffer v;
- unsigned short bpp;
- unsigned int fmt;
-
- DEBUG("PlanB: IOCTL VIDIOCSFBUF\n");
-
- if (!capable(CAP_SYS_ADMIN)
- || !capable(CAP_SYS_RAWIO))
- return -EPERM;
- if (copy_from_user(&v, arg,sizeof(v)))
- return -EFAULT;
- planb_lock(pb);
- switch(v.depth) {
- case 8:
- bpp = 1;
- fmt = PLANB_GRAY;
- break;
- case 15:
- case 16:
- bpp = 2;
- fmt = PLANB_COLOUR15;
- break;
- case 24:
- case 32:
- bpp = 4;
- fmt = PLANB_COLOUR32;
- break;
- default:
- planb_unlock(pb);
- return -EINVAL;
- }
- if (bpp * v.width > v.bytesperline) {
- planb_unlock(pb);
- return -EINVAL;
- }
- pb->win.bpp = bpp;
- pb->win.color_fmt = fmt;
- pb->frame_buffer_phys = (unsigned long) v.base;
- pb->win.sheight = v.height;
- pb->win.swidth = v.width;
- pb->picture.depth = pb->win.depth = v.depth;
- pb->win.bpl = pb->win.bpp * pb->win.swidth;
- pb->win.pad = v.bytesperline - pb->win.bpl;
-
- DEBUG("PlanB: Display at %p is %d by %d, bytedepth %d,"
- " bpl %d (+ %d)\n", v.base, v.width,v.height,
- pb->win.bpp, pb->win.bpl, pb->win.pad);
-
- pb->cmd_buff_inited = 0;
- if(pb->overlay) {
- suspend_overlay(pb);
- fill_cmd_buff(pb);
- resume_overlay(pb);
- }
- planb_unlock(pb);
- return 0;
- }
- case VIDIOCGFBUF:
- {
- struct video_buffer v;
-
- DEBUG("PlanB: IOCTL VIDIOCGFBUF\n");
-
- v.base = (void *)pb->frame_buffer_phys;
- v.height = pb->win.sheight;
- v.width = pb->win.swidth;
- v.depth = pb->win.depth;
- v.bytesperline = pb->win.bpl + pb->win.pad;
- if (copy_to_user(arg, &v, sizeof(v)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCCAPTURE:
- {
- int i;
-
- if(copy_from_user(&i, arg, sizeof(i)))
- return -EFAULT;
- if(i==0) {
- DEBUG("PlanB: IOCTL VIDIOCCAPTURE Stop\n");
-
- if (!(pb->overlay))
- return 0;
- planb_lock(pb);
- pb->overlay = 0;
- overlay_stop(pb);
- planb_unlock(pb);
- } else {
- DEBUG("PlanB: IOCTL VIDIOCCAPTURE Start\n");
-
- if (pb->frame_buffer_phys == 0 ||
- pb->win.width == 0 ||
- pb->win.height == 0)
- return -EINVAL;
- if (pb->overlay)
- return 0;
- planb_lock(pb);
- pb->overlay = 1;
- if(!(pb->cmd_buff_inited))
- fill_cmd_buff(pb);
- overlay_start(pb);
- planb_unlock(pb);
- }
- return 0;
- }
- case VIDIOCGCHAN:
- {
- struct video_channel v;
-
- DEBUG("PlanB: IOCTL VIDIOCGCHAN\n");
-
- if(copy_from_user(&v, arg,sizeof(v)))
- return -EFAULT;
- v.flags = 0;
- v.tuners = 0;
- v.type = VIDEO_TYPE_CAMERA;
- v.norm = pb->win.norm;
- switch(v.channel)
- {
- case 0:
- strcpy(v.name,"Composite");
- break;
- case 1:
- strcpy(v.name,"SVHS");
- break;
- default:
- return -EINVAL;
- break;
- }
- if(copy_to_user(arg,&v,sizeof(v)))
- return -EFAULT;
-
- return 0;
- }
- case VIDIOCSCHAN:
- {
- struct video_channel v;
-
- DEBUG("PlanB: IOCTL VIDIOCSCHAN\n");
-
- if(copy_from_user(&v, arg, sizeof(v)))
- return -EFAULT;
-
- if (v.norm != pb->win.norm) {
- int i, maxlines;
-
- switch (v.norm)
- {
- case VIDEO_MODE_PAL:
- case VIDEO_MODE_SECAM:
- maxlines = PLANB_MAXLINES;
- break;
- case VIDEO_MODE_NTSC:
- maxlines = PLANB_NTSC_MAXLINES;
- break;
- default:
- return -EINVAL;
- break;
- }
- planb_lock(pb);
- /* empty the grabbing queue */
- wait_event(pb->capq, !pb->grabbing);
- pb->maxlines = maxlines;
- pb->win.norm = v.norm;
- /* Stop overlay if running */
- suspend_overlay(pb);
- for(i = 0; i < MAX_GBUFFERS; i++)
- pb->gnorm_switch[i] = 1;
- /* I know it's an overkill, but.... */
- fill_cmd_buff(pb);
- /* ok, now init it accordingly */
- saa_init_regs (pb);
- /* restart overlay if it was running */
- resume_overlay(pb);
- planb_unlock(pb);
- }
-
- switch(v.channel)
- {
- case 0: /* Composite */
- saa_set (SAA7196_IOCC,
- ((saa_regs[pb->win.norm][SAA7196_IOCC] &
- ~7) | 3), pb);
- break;
- case 1: /* SVHS */
- saa_set (SAA7196_IOCC,
- ((saa_regs[pb->win.norm][SAA7196_IOCC] &
- ~7) | 4), pb);
- break;
- default:
- return -EINVAL;
- break;
- }
-
- return 0;
- }
- case VIDIOCGPICT:
- {
- struct video_picture vp = pb->picture;
-
- DEBUG("PlanB: IOCTL VIDIOCGPICT\n");
-
- switch(pb->win.color_fmt) {
- case PLANB_GRAY:
- vp.palette = VIDEO_PALETTE_GREY;
- case PLANB_COLOUR15:
- vp.palette = VIDEO_PALETTE_RGB555;
- break;
- case PLANB_COLOUR32:
- vp.palette = VIDEO_PALETTE_RGB32;
- break;
- default:
- vp.palette = 0;
- break;
- }
-
- if(copy_to_user(arg,&vp,sizeof(vp)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCSPICT:
- {
- struct video_picture vp;
-
- DEBUG("PlanB: IOCTL VIDIOCSPICT\n");
-
- if(copy_from_user(&vp,arg,sizeof(vp)))
- return -EFAULT;
- pb->picture = vp;
- /* Should we do sanity checks here? */
- saa_set (SAA7196_BRIG, (unsigned char)
- ((pb->picture.brightness) >> 8), pb);
- saa_set (SAA7196_HUEC, (unsigned char)
- ((pb->picture.hue) >> 8) ^ 0x80, pb);
- saa_set (SAA7196_CSAT, (unsigned char)
- ((pb->picture.colour) >> 9), pb);
- saa_set (SAA7196_CONT, (unsigned char)
- ((pb->picture.contrast) >> 9), pb);
-
- return 0;
- }
- case VIDIOCSWIN:
- {
- struct video_window vw;
- struct video_clip clip;
- int i;
-
- DEBUG("PlanB: IOCTL VIDIOCSWIN\n");
-
- if(copy_from_user(&vw,arg,sizeof(vw)))
- return -EFAULT;
-
- planb_lock(pb);
- /* Stop overlay if running */
- suspend_overlay(pb);
- pb->win.interlace = (vw.height > pb->maxlines/2)? 1: 0;
- if (pb->win.x != vw.x ||
- pb->win.y != vw.y ||
- pb->win.width != vw.width ||
- pb->win.height != vw.height ||
- !pb->cmd_buff_inited) {
- pb->win.x = vw.x;
- pb->win.y = vw.y;
- pb->win.width = vw.width;
- pb->win.height = vw.height;
- fill_cmd_buff(pb);
- }
- /* Reset clip mask */
- memset ((void *) pb->mask, 0xff, (pb->maxlines
- * ((PLANB_MAXPIXELS + 7) & ~7)) / 8);
- /* Add any clip rects */
- for (i = 0; i < vw.clipcount; i++) {
- if (copy_from_user(&clip, vw.clips + i,
- sizeof(struct video_clip)))
- return -EFAULT;
- add_clip(pb, &clip);
- }
- /* restart overlay if it was running */
- resume_overlay(pb);
- planb_unlock(pb);
- return 0;
- }
- case VIDIOCGWIN:
- {
- struct video_window vw;
-
- DEBUG("PlanB: IOCTL VIDIOCGWIN\n");
-
- vw.x=pb->win.x;
- vw.y=pb->win.y;
- vw.width=pb->win.width;
- vw.height=pb->win.height;
- vw.chromakey=0;
- vw.flags=0;
- if(pb->win.interlace)
- vw.flags|=VIDEO_WINDOW_INTERLACE;
- if(copy_to_user(arg,&vw,sizeof(vw)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCSYNC: {
- int i;
-
- IDEBUG("PlanB: IOCTL VIDIOCSYNC\n");
-
- if(copy_from_user((void *)&i,arg,sizeof(int)))
- return -EFAULT;
-
- IDEBUG("PlanB: sync to frame %d\n", i);
-
- if(i > (MAX_GBUFFERS - 1) || i < 0)
- return -EINVAL;
-chk_grab:
- switch (pb->frame_stat[i]) {
- case GBUFFER_UNUSED:
- return -EINVAL;
- case GBUFFER_GRABBING:
- IDEBUG("PlanB: waiting for grab"
- " done (%d)\n", i);
- interruptible_sleep_on(&pb->capq);
- if(signal_pending(current))
- return -EINTR;
- goto chk_grab;
- case GBUFFER_DONE:
- pb->frame_stat[i] = GBUFFER_UNUSED;
- break;
- }
- return 0;
- }
-
- case VIDIOCMCAPTURE:
- {
- struct video_mmap vm;
- volatile unsigned int status;
-
- IDEBUG("PlanB: IOCTL VIDIOCMCAPTURE\n");
-
- if(copy_from_user((void *) &vm,(void *)arg,sizeof(vm)))
- return -EFAULT;
- status = pb->frame_stat[vm.frame];
- if (status != GBUFFER_UNUSED)
- return -EBUSY;
-
- return vgrab(pb, &vm);
- }
-
- case VIDIOCGMBUF:
- {
- int i;
- struct video_mbuf vm;
-
- DEBUG("PlanB: IOCTL VIDIOCGMBUF\n");
-
- memset(&vm, 0 , sizeof(vm));
- vm.size = PLANB_MAX_FBUF * MAX_GBUFFERS;
- vm.frames = MAX_GBUFFERS;
- for(i = 0; i<MAX_GBUFFERS; i++)
- vm.offsets[i] = PLANB_MAX_FBUF * i;
- if(copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
- return -EFAULT;
- return 0;
- }
-
- case PLANBIOCGSAAREGS:
- {
- struct planb_saa_regs preg;
-
- DEBUG("PlanB: IOCTL PLANBIOCGSAAREGS\n");
-
- if(copy_from_user(&preg, arg, sizeof(preg)))
- return -EFAULT;
- if(preg.addr >= SAA7196_NUMREGS)
- return -EINVAL;
- preg.val = saa_regs[pb->win.norm][preg.addr];
- if(copy_to_user((void *)arg, (void *)&preg,
- sizeof(preg)))
- return -EFAULT;
- return 0;
- }
-
- case PLANBIOCSSAAREGS:
- {
- struct planb_saa_regs preg;
-
- DEBUG("PlanB: IOCTL PLANBIOCSSAAREGS\n");
-
- if(copy_from_user(&preg, arg, sizeof(preg)))
- return -EFAULT;
- if(preg.addr >= SAA7196_NUMREGS)
- return -EINVAL;
- saa_set (preg.addr, preg.val, pb);
- return 0;
- }
-
- case PLANBIOCGSTAT:
- {
- struct planb_stat_regs pstat;
-
- DEBUG("PlanB: IOCTL PLANBIOCGSTAT\n");
-
- pstat.ch1_stat = in_le32(&pb->planb_base->ch1.status);
- pstat.ch2_stat = in_le32(&pb->planb_base->ch2.status);
- pstat.saa_stat0 = saa_status(0, pb);
- pstat.saa_stat1 = saa_status(1, pb);
-
- if(copy_to_user((void *)arg, (void *)&pstat,
- sizeof(pstat)))
- return -EFAULT;
- return 0;
- }
-
- case PLANBIOCSMODE: {
- int v;
-
- DEBUG("PlanB: IOCTL PLANBIOCSMODE\n");
-
- if(copy_from_user(&v, arg, sizeof(v)))
- return -EFAULT;
-
- switch(v)
- {
- case PLANB_TV_MODE:
- saa_set (SAA7196_STDC,
- (saa_regs[pb->win.norm][SAA7196_STDC] &
- 0x7f), pb);
- break;
- case PLANB_VTR_MODE:
- saa_set (SAA7196_STDC,
- (saa_regs[pb->win.norm][SAA7196_STDC] |
- 0x80), pb);
- break;
- default:
- return -EINVAL;
- break;
- }
- pb->win.mode = v;
- return 0;
- }
- case PLANBIOCGMODE: {
- int v=pb->win.mode;
-
- DEBUG("PlanB: IOCTL PLANBIOCGMODE\n");
-
- if(copy_to_user(arg,&v,sizeof(v)))
- return -EFAULT;
- return 0;
- }
-#ifdef PLANB_GSCANLINE
- case PLANBG_GRAB_BPL: {
- int v=pb->gbytes_per_line;
-
- DEBUG("PlanB: IOCTL PLANBG_GRAB_BPL\n");
-
- if(copy_to_user(arg,&v,sizeof(v)))
- return -EFAULT;
- return 0;
- }
-#endif /* PLANB_GSCANLINE */
- case PLANB_INTR_DEBUG: {
- int i;
-
- DEBUG("PlanB: IOCTL PLANB_INTR_DEBUG\n");
-
- if(copy_from_user(&i, arg, sizeof(i)))
- return -EFAULT;
-
- /* avoid hang ups all together */
- for (i = 0; i < MAX_GBUFFERS; i++) {
- if(pb->frame_stat[i] == GBUFFER_GRABBING) {
- pb->frame_stat[i] = GBUFFER_DONE;
- }
- }
- if(pb->grabbing)
- pb->grabbing--;
- wake_up_interruptible(&pb->capq);
- return 0;
- }
- case PLANB_INV_REGS: {
- int i;
- struct planb_any_regs any;
-
- DEBUG("PlanB: IOCTL PLANB_INV_REGS\n");
-
- if(copy_from_user(&any, arg, sizeof(any)))
- return -EFAULT;
- if(any.offset < 0 || any.offset + any.bytes > 0x400)
- return -EINVAL;
- if(any.bytes > 128)
- return -EINVAL;
- for (i = 0; i < any.bytes; i++) {
- any.data[i] =
- in_8((unsigned char *)pb->planb_base
- + any.offset + i);
- }
- if(copy_to_user(arg,&any,sizeof(any)))
- return -EFAULT;
- return 0;
- }
- default:
- {
- DEBUG("PlanB: Unimplemented IOCTL\n");
- return -ENOIOCTLCMD;
- }
- /* Some IOCTLs are currently unsupported on PlanB */
- case VIDIOCGTUNER: {
- DEBUG("PlanB: IOCTL VIDIOCGTUNER\n");
- goto unimplemented; }
- case VIDIOCSTUNER: {
- DEBUG("PlanB: IOCTL VIDIOCSTUNER\n");
- goto unimplemented; }
- case VIDIOCSFREQ: {
- DEBUG("PlanB: IOCTL VIDIOCSFREQ\n");
- goto unimplemented; }
- case VIDIOCGFREQ: {
- DEBUG("PlanB: IOCTL VIDIOCGFREQ\n");
- goto unimplemented; }
- case VIDIOCKEY: {
- DEBUG("PlanB: IOCTL VIDIOCKEY\n");
- goto unimplemented; }
- case VIDIOCSAUDIO: {
- DEBUG("PlanB: IOCTL VIDIOCSAUDIO\n");
- goto unimplemented; }
- case VIDIOCGAUDIO: {
- DEBUG("PlanB: IOCTL VIDIOCGAUDIO\n");
- goto unimplemented; }
-unimplemented:
- DEBUG(" Unimplemented\n");
- return -ENOIOCTLCMD;
- }
- return 0;
-}
-
-static int planb_mmap(struct vm_area_struct *vma, struct video_device *dev, const char *adr, unsigned long size)
-{
- int i;
- struct planb *pb = (struct planb *)dev;
- unsigned long start = (unsigned long)adr;
-
- if (size > MAX_GBUFFERS * PLANB_MAX_FBUF)
- return -EINVAL;
- if (!pb->rawbuf) {
- int err;
- if((err=grabbuf_alloc(pb)))
- return err;
- }
- for (i = 0; i < pb->rawbuf_size; i++) {
- unsigned long pfn;
-
- pfn = virt_to_phys((void *)pb->rawbuf[i]) >> PAGE_SHIFT;
- if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
- return -EAGAIN;
- start += PAGE_SIZE;
- if (size <= PAGE_SIZE)
- break;
- size -= PAGE_SIZE;
- }
- return 0;
-}
-
-static struct video_device planb_template=
-{
- .owner = THIS_MODULE,
- .name = PLANB_DEVICE_NAME,
- .type = VID_TYPE_OVERLAY,
- .open = planb_open,
- .close = planb_close,
- .read = planb_read,
- .write = planb_write,
- .ioctl = planb_ioctl,
- .mmap = planb_mmap, /* mmap? */
-};
-
-static int init_planb(struct planb *pb)
-{
- unsigned char saa_rev;
- int i, result;
-
- memset ((void *) &pb->win, 0, sizeof (struct planb_window));
- /* Simple sanity check */
- if(def_norm >= NUM_SUPPORTED_NORM || def_norm < 0) {
- printk(KERN_ERR "PlanB: Option(s) invalid\n");
- return -2;
- }
- pb->win.norm = def_norm;
- pb->win.mode = PLANB_TV_MODE; /* TV mode */
- pb->win.interlace=1;
- pb->win.x=0;
- pb->win.y=0;
- pb->win.width=768; /* 640 */
- pb->win.height=576; /* 480 */
- pb->maxlines=576;
-#if 0
- btv->win.cropwidth=768; /* 640 */
- btv->win.cropheight=576; /* 480 */
- btv->win.cropx=0;
- btv->win.cropy=0;
-#endif
- pb->win.pad=0;
- pb->win.bpp=4;
- pb->win.depth=32;
- pb->win.color_fmt=PLANB_COLOUR32;
- pb->win.bpl=1024*pb->win.bpp;
- pb->win.swidth=1024;
- pb->win.sheight=768;
-#ifdef PLANB_GSCANLINE
- if((pb->gbytes_per_line = PLANB_MAXPIXELS * 4) > PAGE_SIZE
- || (pb->gbytes_per_line <= 0))
- return -3;
- else {
- /* page align pb->gbytes_per_line for DMA purpose */
- for(i = PAGE_SIZE; pb->gbytes_per_line < (i>>1);)
- i>>=1;
- pb->gbytes_per_line = i;
- }
-#endif
- pb->tab_size = PLANB_MAXLINES + 40;
- pb->suspend = 0;
- mutex_init(&pb->lock);
- pb->ch1_cmd = 0;
- pb->ch2_cmd = 0;
- pb->mask = 0;
- pb->priv_space = 0;
- pb->offset = 0;
- pb->user = 0;
- pb->overlay = 0;
- init_waitqueue_head(&pb->suspendq);
- pb->cmd_buff_inited = 0;
- pb->frame_buffer_phys = 0;
-
- /* Reset DMA controllers */
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
-
- saa_rev = (saa_status(0, pb) & 0xf0) >> 4;
- printk(KERN_INFO "PlanB: SAA7196 video processor rev. %d\n", saa_rev);
- /* Initialize the SAA registers in memory and on chip */
- saa_init_regs (pb);
-
- /* clear interrupt mask */
- pb->intr_mask = PLANB_CLR_IRQ;
-
- result = request_irq(pb->irq, planb_irq, 0, "PlanB", pb);
- if (result < 0) {
- if (result==-EINVAL)
- printk(KERN_ERR "PlanB: Bad irq number (%d) "
- "or handler\n", (int)pb->irq);
- else if (result==-EBUSY)
- printk(KERN_ERR "PlanB: I don't know why, "
- "but IRQ %d is busy\n", (int)pb->irq);
- return result;
- }
- disable_irq(pb->irq);
-
- /* Now add the template and register the device unit. */
- memcpy(&pb->video_dev,&planb_template,sizeof(planb_template));
-
- pb->picture.brightness=0x90<<8;
- pb->picture.contrast = 0x70 << 8;
- pb->picture.colour = 0x70<<8;
- pb->picture.hue = 0x8000;
- pb->picture.whiteness = 0;
- pb->picture.depth = pb->win.depth;
-
- pb->frame_stat=NULL;
- init_waitqueue_head(&pb->capq);
- for(i=0; i<MAX_GBUFFERS; i++) {
- pb->gbuf_idx[i] = PLANB_MAX_FBUF * i / PAGE_SIZE;
- pb->gwidth[i]=0;
- pb->gheight[i]=0;
- pb->gfmt[i]=0;
- pb->cap_cmd[i]=NULL;
-#ifndef PLANB_GSCANLINE
- pb->l_fr_addr_idx[i] = MAX_GBUFFERS * (PLANB_MAX_FBUF
- / PAGE_SIZE + 1) + MAX_LNUM * i;
- pb->lsize[i] = 0;
- pb->lnum[i] = 0;
-#endif
- }
- pb->rawbuf=NULL;
- pb->grabbing=0;
-
- /* enable interrupts */
- out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
- pb->intr_mask = PLANB_FRM_IRQ;
- enable_irq(pb->irq);
-
- if(video_register_device(&pb->video_dev, VFL_TYPE_GRABBER, video_nr)<0)
- return -1;
-
- return 0;
-}
-
-/*
- * Scan for a PlanB controller, request the irq and map the io memory
- */
-
-static int find_planb(void)
-{
- struct planb *pb;
- struct device_node *planb_devices;
- unsigned char dev_fn, confreg, bus;
- unsigned int old_base, new_base;
- unsigned int irq;
- struct pci_dev *pdev;
- int rc;
-
- if (!machine_is(powermac))
- return 0;
-
- planb_devices = of_find_node_by_name(NULL, "planb");
- if (planb_devices == 0) {
- planb_num=0;
- printk(KERN_WARNING "PlanB: no device found!\n");
- return planb_num;
- }
-
- if (planb_devices->next != NULL)
- printk(KERN_ERR "Warning: only using first PlanB device!\n");
- pb = &planbs[0];
- planb_num = 1;
-
- if (planb_devices->n_addrs != 1) {
- printk (KERN_WARNING "PlanB: expecting 1 address for planb "
- "(got %d)", planb_devices->n_addrs);
- of_node_put(planb_devices);
- return 0;
- }
-
- if (planb_devices->n_intrs == 0) {
- printk(KERN_WARNING "PlanB: no intrs for device %s\n",
- planb_devices->full_name);
- of_node_put(planb_devices);
- return 0;
- } else {
- irq = planb_devices->intrs[0].line;
- }
-
- /* Initialize PlanB's PCI registers */
-
- /* There is a bug with the way OF assigns addresses
- to the devices behind the chaos bridge.
- control needs only 0x1000 of space, but decodes only
- the upper 16 bits. It therefore occupies a full 64K.
- OF assigns the planb controller memory within this space;
- so we need to change that here in order to access planb. */
-
- /* We remap to 0xf1000000 in hope that nobody uses it ! */
-
- bus = (planb_devices->addrs[0].space >> 16) & 0xff;
- dev_fn = (planb_devices->addrs[0].space >> 8) & 0xff;
- confreg = planb_devices->addrs[0].space & 0xff;
- old_base = planb_devices->addrs[0].address;
- new_base = 0xf1000000;
- of_node_put(planb_devices);
-
- DEBUG("PlanB: Found on bus %d, dev %d, func %d, "
- "membase 0x%x (base reg. 0x%x)\n",
- bus, PCI_SLOT(dev_fn), PCI_FUNC(dev_fn), old_base, confreg);
-
- pdev = pci_get_bus_and_slot(bus, dev_fn);
- if (!pdev) {
- printk(KERN_ERR "planb: cannot find slot\n");
- goto err_out;
- }
-
- /* Enable response in memory space, bus mastering,
- use memory write and invalidate */
- rc = pci_enable_device(pdev);
- if (rc) {
- printk(KERN_ERR "planb: cannot enable PCI device %s\n",
- pci_name(pdev));
- goto err_out;
- }
- rc = pci_set_mwi(pdev);
- if (rc) {
- printk(KERN_ERR "planb: cannot enable MWI on PCI device %s\n",
- pci_name(pdev));
- goto err_out_disable;
- }
- pci_set_master(pdev);
-
- /* Set the new base address */
- pci_write_config_dword (pdev, confreg, new_base);
-
- planb_regs = (volatile struct planb_registers *)
- ioremap (new_base, 0x400);
- pb->planb_base = planb_regs;
- pb->planb_base_phys = (struct planb_registers *)new_base;
- pb->irq = irq;
- pb->dev = pdev;
-
- return planb_num;
-
-err_out_disable:
- pci_disable_device(pdev);
-err_out:
- /* FIXME handle error */ /* comment moved from pci_find_slot, above */
- pci_dev_put(pdev);
- return 0;
-}
-
-static void release_planb(void)
-{
- int i;
- struct planb *pb;
-
- for (i=0;i<planb_num; i++)
- {
- pb=&planbs[i];
-
- /* stop and flash DMAs unconditionally */
- planb_dbdma_stop(&pb->planb_base->ch2);
- planb_dbdma_stop(&pb->planb_base->ch1);
-
- /* clear and free interrupts */
- pb->intr_mask = PLANB_CLR_IRQ;
- out_le32 (&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
- free_irq(pb->irq, pb);
-
- /* make sure all allocated memory are freed */
- planb_prepare_close(pb);
-
- printk(KERN_INFO "PlanB: unregistering with v4l\n");
- video_unregister_device(&pb->video_dev);
-
- pci_dev_put(pb->dev);
-
- /* note that iounmap() does nothing on the PPC right now */
- iounmap ((void *)pb->planb_base);
- }
-}
-
-static int __init init_planbs(void)
-{
- int i;
-
- if (find_planb()<=0)
- return -EIO;
-
- for (i=0; i<planb_num; i++) {
- if (init_planb(&planbs[i])<0) {
- printk(KERN_ERR "PlanB: error registering device %d"
- " with v4l\n", i);
- release_planb();
- return -EIO;
- }
- printk(KERN_INFO "PlanB: registered device %d with v4l\n", i);
- }
- return 0;
-}
-
-static void __exit exit_planbs(void)
-{
- release_planb();
-}
-
-module_init(init_planbs);
-module_exit(exit_planbs);
projects / linux-beck.git / commitdiff