From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/media/video/planb.c | 2303 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2303 insertions(+) create mode 100644 drivers/media/video/planb.c (limited to 'drivers/media/video/planb.c') diff --git a/drivers/media/video/planb.c b/drivers/media/video/planb.c new file mode 100644 index 0000000..b19c334 --- /dev/null +++ b/drivers/media/video/planb.c @@ -0,0 +1,2303 @@ +/* + 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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_PARM(def_norm, "i"); +MODULE_PARM_DESC(def_norm, "Default startup norm (0=PAL, 1=NTSC, 2=SECAM)"); +MODULE_PARM(video_nr,"i"); +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 planb_irq(int, void *, struct pt_regs *); +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 = (unsigned char**) 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) +{ + down(&pb->lock); +} + +static inline void planb_unlock(struct planb *pb) +{ + up(&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 = kmalloc (size, GFP_KERNEL)) == 0) + return -ENOMEM; + memset ((void *) pb->priv_space, 0, size); + 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 void planb_irq(int irq, void *dev_id, struct pt_regs * regs) +{ + 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; + } + /* 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"); +} + +/******************************* + * 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= 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, + .hardware = VID_HARDWARE_PLANB, + .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; + init_MUTEX(&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", (void *)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; igbuf_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 != _MACH_Pmac) + return 0; + + planb_devices = find_devices("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); + return 0; + } + + if (planb_devices->n_intrs == 0) { + printk(KERN_WARNING "PlanB: no intrs for device %s\n", + planb_devices->full_name); + 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; + + 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_find_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; + + return planb_num; + +err_out_disable: + pci_disable_device(pdev); +err_out: + /* FIXME handle error */ /* comment moved from pci_find_slot, above */ + return 0; +} + +static void release_planb(void) +{ + int i; + struct planb *pb; + + for (i=0;iplanb_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); + + /* 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