/* 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 planb_irq(int, void *); 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) { 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 = 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) { 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<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, .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; 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", (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; 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 = 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;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); /* 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);