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/* |
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* Copyright (C) 2004-2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: dev_px.c,v 1.26 2005/02/18 07:29:56 debug Exp $ |
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* |
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* TURBOchannel Pixelstamp graphics device. |
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* |
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* PMAG-CA = PX |
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* PMAG-DA = PXG |
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* PMAG-EA = PXG+ |
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* PMAG-FA = PXG+ TURBO |
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* |
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* See include/pxreg.h (and NetBSD's arch/pmax/dev/px.c) for more information. |
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* |
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* The emulation of this device is far from complete. Different pixelstamp |
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* boards are recognizes under different names depending on operating system: |
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* |
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* NetBSD/pmax: (works fine both with and without console on framebuffer) |
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* PMAG-CA: px0 at tc0 slot 0 offset 0x0: 2D, 4x1 stamp, |
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* 8 plane |
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* PMAG-DA: px0 at tc0 slot 0 offset 0x0: 3D, 4x1 stamp, |
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* 8 plane, 128KB SRAM |
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* PMAG-EA: (not supported) |
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* PMAG-FA: px0 at tc0 slot 0 offset 0x0: 3D, 5x2 stamp, |
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* 24 plane, 128KB SRAM |
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* |
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* Ultrix 4.2A rev 47: (usually crashes if the device is installed, but |
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* serial console is used) |
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* PMAG-CA: px0 at ibus0, pa0 (5x1 8+8+0+0) |
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* PMAG-DA: px0 at ibus0, pq0 (5x1 16+16+16+0 128KB) |
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* or (5x1 0+0+16+0 128KB) |
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* PMAG-EA: (not supported) |
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* PMAG-FA: px0 at ibus0, pq0 (5x2 24+24+16+16 128KB) |
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* |
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* Ultrix 4.2 rev 85: (usually crashes if the device is installed, |
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* but serial console is used) |
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* PMAG-CA: ga0 at ibus0, ga0 ( 8 planes 4x1 stamp ) |
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* PMAG-DA: gq0 at ibus0, gq0 ( 8+8+16Z+0X plane 4x1 stamp ) |
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* PMAG-EA: (not supported) |
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* PMAG-FA: gq0 at ibus0, gq0 ( 24+24+24Z+24X plane |
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* 5x2 stamp ) (crashes in serial console mode) |
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* |
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* TODO: A lot of stuff: |
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* |
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* Read http://www.mit.edu/afs/athena/system/pmax_ul3/srvd.73/sys/ |
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* io/tc/gq.h |
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* and try to figure out the interrupt and memory management stuff. |
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* |
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* Color support: foreground, background, 8-bit palette? |
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* 2D and 3D stuff: polygons? shading? |
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* Don't use so many hardcoded values. |
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* Actually interpret the values in each command, don't just |
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* assume NetBSD/Ultrix usage. |
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* Factor out the DMA read (main memory vs sram). |
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* Interrupts? |
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* Make sure that everything works with both NetBSD and Ultrix. |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#include "cpu.h" |
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#include "devices.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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|
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#include "pxreg.h" |
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|
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#define PX_XSIZE 1280 |
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#define PX_YSIZE 1024 |
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|
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/* #define PX_DEBUG */ |
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|
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|
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/* |
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* dev_px_tick(): |
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*/ |
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void dev_px_tick(struct cpu *cpu, void *extra) |
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{ |
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#if 0 |
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struct px_data *d = extra; |
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|
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if (d->intr & STIC_INT_P_EN) /* or _WE ? */ |
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cpu_interrupt(cpu, d->irq_nr); |
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#endif |
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} |
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|
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|
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/* |
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* px_readword(): |
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* |
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* Helper function to read 32-bit words from DMA memory, |
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* to allow both little and big endian accesses. |
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* (DECstations probably only use little endian access, |
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* but endianness-independance is probably nice to have anyway.) |
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*/ |
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uint32_t px_readword(struct cpu *cpu, unsigned char *dma_buf, int ofs) |
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{ |
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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return dma_buf[ofs+0] + (dma_buf[ofs+1] << 8) + |
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(dma_buf[ofs+2] << 16) + (dma_buf[ofs+3] << 24); |
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else |
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return dma_buf[ofs+3] + (dma_buf[ofs+2] << 8) + |
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(dma_buf[ofs+1] << 16) + (dma_buf[ofs+0] << 24); |
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} |
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|
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|
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/* |
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* dev_px_dma(): |
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* |
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* This routine performs a (fake) DMA transfer of STAMP commands |
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* and executes them. |
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* |
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* For the "PX" board, read from main memory (cpu->mem). For all other |
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* boards, read from the i860 SRAM portion of the device (d->sram). |
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*/ |
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void dev_px_dma(struct cpu *cpu, uint32_t sys_addr, struct px_data *d) |
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{ |
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unsigned char dma_buf[32768]; |
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int dma_len = sizeof(dma_buf); |
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int bytesperpixel; |
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uint32_t cmdword; |
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|
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bytesperpixel = d->bitdepth >> 3; |
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|
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dma_len = 56 * 4; /* TODO: this is just enough for NetBSD's |
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putchar */ |
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|
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if (d->type == DEV_PX_TYPE_PX) { |
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cpu->memory_rw(cpu, cpu->mem, sys_addr, dma_buf, |
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dma_len, MEM_READ, NO_EXCEPTIONS | PHYSICAL); |
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} else { |
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/* TODO: past end of sram? */ |
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memmove(dma_buf, &d->sram[sys_addr & 0x1ffff], dma_len); |
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} |
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|
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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cmdword = dma_buf[0] + (dma_buf[1] << 8) + |
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(dma_buf[2] << 16) + (dma_buf[3] << 24); |
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else |
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cmdword = dma_buf[3] + (dma_buf[2] << 8) + |
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(dma_buf[1] << 16) + (dma_buf[0] << 24); |
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|
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#ifdef PX_DEBUG |
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debug("[ px: dma from 0x%08x: ", (int)sys_addr); |
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|
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debug("cmd="); |
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switch (cmdword & 0xf) { |
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case STAMP_CMD_POINTS: debug("points"); break; |
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case STAMP_CMD_LINES: debug("lines"); break; |
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case STAMP_CMD_TRIANGLES: debug("triangles"); break; |
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case STAMP_CMD_COPYSPANS: debug("copyspans"); break; |
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case STAMP_CMD_READSPANS: debug("readspans"); break; |
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case STAMP_CMD_WRITESPANS: debug("writespans"); break; |
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case STAMP_CMD_VIDEO: debug("video"); break; |
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default: |
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debug("0x%x (?)", cmdword & 0xf); |
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} |
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|
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debug(",rgb="); |
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switch (cmdword & 0x30) { |
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case STAMP_RGB_NONE: debug("none"); break; |
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case STAMP_RGB_CONST: debug("const"); break; |
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case STAMP_RGB_FLAT: debug("flat"); break; |
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case STAMP_RGB_SMOOTH: debug("smooth"); break; |
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default: |
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debug("0x%x (?)", cmdword & 0x30); |
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} |
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|
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debug(",z="); |
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switch (cmdword & 0xc0) { |
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case STAMP_Z_NONE: debug("none"); break; |
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case STAMP_Z_CONST: debug("const"); break; |
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case STAMP_Z_FLAT: debug("flat"); break; |
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case STAMP_Z_SMOOTH: debug("smooth"); break; |
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default: |
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debug("0x%x (?)", cmdword & 0xc0); |
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} |
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|
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debug(",xy="); |
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switch (cmdword & 0x300) { |
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case STAMP_XY_NONE: debug("none"); break; |
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case STAMP_XY_PERPACKET: debug("perpacket"); break; |
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case STAMP_XY_PERPRIMATIVE: debug("perprimative"); break; |
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default: |
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debug("0x%x (?)", cmdword & 0x300); |
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} |
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|
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debug(",lw="); |
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switch (cmdword & 0xc00) { |
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case STAMP_LW_NONE: debug("none"); break; |
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case STAMP_LW_PERPACKET: debug("perpacket"); break; |
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case STAMP_LW_PERPRIMATIVE: debug("perprimative"); break; |
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default: |
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debug("0x%x (?)", cmdword & 0xc00); |
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} |
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|
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if (cmdword & STAMP_CLIPRECT) |
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debug(",CLIPRECT"); |
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if (cmdword & STAMP_MESH) |
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debug(",MESH"); |
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if (cmdword & STAMP_AALINE) |
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debug(",AALINE"); |
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if (cmdword & STAMP_HS_EQUALS) |
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debug(",HS_EQUALS"); |
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|
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{ |
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int i; |
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for (i=0; i<dma_len; i++) |
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debug(" %02x", dma_buf[i]); |
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} |
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|
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debug(" ]\n"); |
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#endif /* PX_DEBUG */ |
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|
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/* NetBSD and Ultrix copyspans */ |
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if (cmdword == 0x405) { |
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uint32_t nspans, lw; |
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int spannr, ofs; |
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uint32_t span_len, span_src, span_dst; |
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/* unsigned char pixels[PX_XSIZE * 3]; */ |
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|
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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nspans = dma_buf[4] + (dma_buf[5] << 8) + |
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(dma_buf[6] << 16) + (dma_buf[7] << 24); |
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else |
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nspans = dma_buf[7] + (dma_buf[6] << 8) + |
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(dma_buf[5] << 16) + (dma_buf[4] << 24); |
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|
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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lw = dma_buf[16] + (dma_buf[17] << 8) + |
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(dma_buf[18] << 16) + (dma_buf[19] << 24); |
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else |
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lw = dma_buf[19] + (dma_buf[18] << 8) + |
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(dma_buf[17] << 16) + (dma_buf[16] << 24); |
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|
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nspans >>= 24; |
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/* Why not this? lw = (lw + 1) >> 2; */ |
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|
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#ifdef PX_DEBUG |
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debug("[ px: copyspans: nspans = %i, lw = %i ]\n", nspans, lw); |
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#endif |
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|
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/* Reread copyspans command if it wasn't completely read: */ |
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if (dma_len < 4*(5 + nspans*3)) { |
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dma_len = 4 * (5+nspans*3); |
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if (d->type == DEV_PX_TYPE_PX) |
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cpu->memory_rw(cpu, cpu->mem, sys_addr, |
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dma_buf, dma_len, MEM_READ, |
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NO_EXCEPTIONS | PHYSICAL); |
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else |
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memmove(dma_buf, &d->sram[sys_addr & 0x1ffff], |
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dma_len); /* TODO: past end of sram? */ |
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} |
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|
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ofs = 4*5; |
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for (spannr=0; spannr<nspans; spannr++) { |
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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span_len = dma_buf[ofs+0] + (dma_buf[ofs+1] << |
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8) + (dma_buf[ofs+2] << 16) + |
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(dma_buf[ofs+3] << 24); |
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else |
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span_len = dma_buf[ofs+3] + (dma_buf[ofs+2] << |
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8) + (dma_buf[ofs+1] << 16) + |
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(dma_buf[ofs+0] << 24); |
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ofs += 4; |
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|
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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span_src = dma_buf[ofs+0] + (dma_buf[ofs+1] << |
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8) + (dma_buf[ofs+2] << 16) + |
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(dma_buf[ofs+3] << 24); |
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else |
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span_src = dma_buf[ofs+3] + (dma_buf[ofs+2] << |
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8) + (dma_buf[ofs+1] << 16) + |
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(dma_buf[ofs+0] << 24); |
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ofs += 4; |
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|
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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span_dst = dma_buf[ofs+0] + (dma_buf[ofs+1] << |
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8) + (dma_buf[ofs+2] << 16) + |
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(dma_buf[ofs+3] << 24); |
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else |
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span_dst = dma_buf[ofs+3] + (dma_buf[ofs+2] << |
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8) + (dma_buf[ofs+1] << 16) + |
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(dma_buf[ofs+0] << 24); |
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ofs += 4; |
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|
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span_len >>= 3; |
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span_dst >>= 3; |
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span_src >>= 3; |
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|
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if (span_len > PX_XSIZE) |
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span_len = PX_XSIZE; |
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|
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/* debug(" span %i: len=%i src=%i dst=%i\n", |
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spannr, span_len, span_src, span_dst); */ |
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|
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memmove(d->vfb_data->framebuffer + span_dst * |
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PX_XSIZE * bytesperpixel, d->vfb_data->framebuffer |
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+ span_src * PX_XSIZE * bytesperpixel, span_len * |
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bytesperpixel); |
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|
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d->vfb_data->update_x1 = 0; d->vfb_data->update_x2 = |
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PX_XSIZE-1; |
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if (span_dst < d->vfb_data->update_y1) |
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d->vfb_data->update_y1 = span_dst; |
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if (span_dst > d->vfb_data->update_y2) |
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d->vfb_data->update_y2 = span_dst; |
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if (span_src < d->vfb_data->update_y1) |
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d->vfb_data->update_y1 = span_src; |
| 337 |
if (span_src > d->vfb_data->update_y2) |
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d->vfb_data->update_y2 = span_src; |
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} |
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} |
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|
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/* NetBSD and Ultrix erasecols/eraserows */ |
| 343 |
if (cmdword == 0x411) { |
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uint32_t v1, v2, lw, attr; |
| 345 |
int x,y,x2,y2; |
| 346 |
int fb_y; |
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int bg_r, bg_g, bg_b; |
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unsigned char pixels[PX_XSIZE * 3]; |
| 349 |
|
| 350 |
lw = px_readword(cpu, dma_buf, 16); |
| 351 |
attr = px_readword(cpu, dma_buf, 20); |
| 352 |
v1 = px_readword(cpu, dma_buf, 24); |
| 353 |
v2 = px_readword(cpu, dma_buf, 28); |
| 354 |
#if 0 |
| 355 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
| 356 |
lw = dma_buf[16] + (dma_buf[17] << 8) + |
| 357 |
(dma_buf[18] << 16) + (dma_buf[19] << 24); |
| 358 |
else |
| 359 |
lw = dma_buf[19] + (dma_buf[18] << 8) + |
| 360 |
(dma_buf[17] << 16) + (dma_buf[16] << 24); |
| 361 |
|
| 362 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
| 363 |
v1 = dma_buf[24] + (dma_buf[25] << 8) + |
| 364 |
(dma_buf[26] << 16) + (dma_buf[27] << 24); |
| 365 |
else |
| 366 |
v1 = dma_buf[27] + (dma_buf[26] << 8) + |
| 367 |
(dma_buf[25] << 16) + (dma_buf[24] << 24); |
| 368 |
|
| 369 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
| 370 |
v2 = dma_buf[28] + (dma_buf[29] << 8) + |
| 371 |
(dma_buf[30] << 16) + (dma_buf[31] << 24); |
| 372 |
else |
| 373 |
v2 = dma_buf[31] + (dma_buf[30] << 8) + |
| 374 |
(dma_buf[29] << 16) + (dma_buf[28] << 24); |
| 375 |
#endif |
| 376 |
bg_r = (attr >> 16) & 255; |
| 377 |
bg_g = (attr >> 8) & 255; |
| 378 |
bg_b = attr & 255; |
| 379 |
if (bg_r == 0) |
| 380 |
bg_r = bg_g = bg_b = 0; |
| 381 |
else |
| 382 |
if (bg_r == 7) |
| 383 |
bg_r = bg_g = bg_b = 192; |
| 384 |
else |
| 385 |
bg_r = bg_g = bg_b = 255; |
| 386 |
|
| 387 |
v1 -= lw; |
| 388 |
v2 -= lw; |
| 389 |
|
| 390 |
x = (v1 >> 19) & 2047; |
| 391 |
y = (v1 >> 3) & 1023; |
| 392 |
x2 = (v2 >> 19) & 2047; |
| 393 |
y2 = (v2 >> 3) & 1023; |
| 394 |
|
| 395 |
lw = (lw + 1) >> 2; |
| 396 |
|
| 397 |
if (x2 - x > PX_XSIZE) |
| 398 |
x2 = PX_XSIZE; |
| 399 |
|
| 400 |
#ifdef PX_DEBUG |
| 401 |
debug("[ px: clear/fill: v1 = 0x%08x v2 = 0x%08x " |
| 402 |
"lw=%i x=%i y=%i x2=%i y2=%i ]\n", (int)v1, (int)v2, |
| 403 |
lw, x,y, x2,y2); |
| 404 |
#endif |
| 405 |
if (bytesperpixel == 3) { |
| 406 |
int xi; |
| 407 |
for (xi=0; xi<x2-x; xi++) { |
| 408 |
/* TODO: rgb order? */ |
| 409 |
pixels[xi*3 + 0] = bg_r; |
| 410 |
pixels[xi*3 + 1] = bg_g; |
| 411 |
pixels[xi*3 + 2] = bg_b; |
| 412 |
} |
| 413 |
} else |
| 414 |
memset(pixels, attr, (x2 - x) * bytesperpixel); |
| 415 |
|
| 416 |
if (x < d->vfb_data->update_x1) |
| 417 |
d->vfb_data->update_x1 = x; |
| 418 |
if (x2 > d->vfb_data->update_x2) |
| 419 |
d->vfb_data->update_x2 = x2; |
| 420 |
|
| 421 |
for (fb_y=y; fb_y < y2 + lw; fb_y ++) { |
| 422 |
memcpy(d->vfb_data->framebuffer + (fb_y * PX_XSIZE + x) |
| 423 |
* bytesperpixel, pixels, (x2-x)*bytesperpixel); |
| 424 |
|
| 425 |
if (fb_y < d->vfb_data->update_y1) |
| 426 |
d->vfb_data->update_y1 = fb_y; |
| 427 |
if (fb_y > d->vfb_data->update_y2) |
| 428 |
d->vfb_data->update_y2 = fb_y; |
| 429 |
} |
| 430 |
} |
| 431 |
|
| 432 |
/* NetBSD and Ultrix putchar */ |
| 433 |
if (cmdword == 0xa21) { |
| 434 |
/* Ugly test code: */ |
| 435 |
unsigned char pixels[16 * 3]; |
| 436 |
int pixels_len = 16; |
| 437 |
uint32_t v1, v2, fgcolor, bgcolor; |
| 438 |
int x, y, x2,y2, i, maxi; |
| 439 |
int xbit; |
| 440 |
int suby; |
| 441 |
int fg_r, fg_g, fg_b; |
| 442 |
int bg_r, bg_g, bg_b; |
| 443 |
|
| 444 |
v1 = px_readword(cpu, dma_buf, 52); |
| 445 |
v2 = px_readword(cpu, dma_buf, 56); |
| 446 |
fgcolor = px_readword(cpu, dma_buf, 16 * 4); |
| 447 |
bgcolor = px_readword(cpu, dma_buf, 29 * 4); |
| 448 |
|
| 449 |
/* |
| 450 |
* TODO: Which one is r, which one is g, and which one is b? |
| 451 |
* TODO 2: Use the BT459 palette, these values are hardcoded |
| 452 |
* for NetBSD and Ultrix grayscale only. |
| 453 |
*/ |
| 454 |
fg_r = (fgcolor >> 16) & 255; |
| 455 |
fg_g = (fgcolor >> 8) & 255; |
| 456 |
fg_b = fgcolor & 255; |
| 457 |
if (fg_r == 0) |
| 458 |
fg_r = fg_g = fg_b = 0; |
| 459 |
else |
| 460 |
if (fg_r == 7) |
| 461 |
fg_r = fg_g = fg_b = 192; |
| 462 |
else |
| 463 |
fg_r = fg_g = fg_b = 255; |
| 464 |
|
| 465 |
bg_r = (bgcolor >> 16) & 255; |
| 466 |
bg_g = (bgcolor >> 8) & 255; |
| 467 |
bg_b = bgcolor & 255; |
| 468 |
if (bg_r == 0) |
| 469 |
bg_r = bg_g = bg_b = 0; |
| 470 |
else |
| 471 |
if (bg_r == 7) |
| 472 |
bg_r = bg_g = bg_b = 192; |
| 473 |
else |
| 474 |
bg_r = bg_g = bg_b = 255; |
| 475 |
|
| 476 |
x = (v1 >> 19) & 2047; |
| 477 |
y = ((v1 - 63) >> 3) & 1023; |
| 478 |
x2 = (v2 >> 19) & 2047; |
| 479 |
y2 = ((v2 - 63) >> 3) & 1023; |
| 480 |
|
| 481 |
#ifdef PX_DEBUG |
| 482 |
debug("[ px putchar: v1 = 0x%08x v2 = 0x%08x x=%i y=%i ]\n", |
| 483 |
(int)v1, (int)v2, x,y, x2,y2); |
| 484 |
#endif |
| 485 |
x %= PX_XSIZE; |
| 486 |
y %= PX_YSIZE; |
| 487 |
x2 %= PX_XSIZE; |
| 488 |
y2 %= PX_YSIZE; |
| 489 |
|
| 490 |
pixels_len = x2 - x; |
| 491 |
|
| 492 |
suby = 0; |
| 493 |
maxi = 12; |
| 494 |
maxi = 33; |
| 495 |
|
| 496 |
for (i=4; i<maxi; i++) { |
| 497 |
int j; |
| 498 |
|
| 499 |
if (i == 12) |
| 500 |
i = 30; |
| 501 |
|
| 502 |
for (j=0; j<2; j++) { |
| 503 |
for (xbit = 0; xbit < 8; xbit ++) { |
| 504 |
if (bytesperpixel == 3) { |
| 505 |
/* 24-bit: */ |
| 506 |
/* TODO: Which one is r, |
| 507 |
which one is g, and b? */ |
| 508 |
pixels[xbit * 3 + 0] = |
| 509 |
(dma_buf[i*4 + j*2 + 0] & |
| 510 |
(1 << xbit))? fg_r : bg_r; |
| 511 |
pixels[xbit * 3 + 1] = |
| 512 |
(dma_buf[i*4 + j*2 + 0] & |
| 513 |
(1 << xbit))? fg_g : bg_g; |
| 514 |
pixels[xbit * 3 + 2] = |
| 515 |
(dma_buf[i*4 + j*2 + 0] & |
| 516 |
(1 << xbit))? fg_b : bg_b; |
| 517 |
pixels[(xbit + 8) * 3 + 0] = |
| 518 |
(dma_buf[i*4 + j*2 + 1] & |
| 519 |
(1 << xbit))? fg_r : bg_r; |
| 520 |
pixels[(xbit + 8) * 3 + 1] = |
| 521 |
(dma_buf[i*4 + j*2 + 1] & |
| 522 |
(1 << xbit))? fg_g : bg_g; |
| 523 |
pixels[(xbit + 8) * 3 + 2] = |
| 524 |
(dma_buf[i*4 + j*2 + 1] & |
| 525 |
(1 << xbit))? fg_b : bg_b; |
| 526 |
} else { |
| 527 |
/* 8-bit: */ |
| 528 |
pixels[xbit] = (dma_buf[i*4 + |
| 529 |
j*2 + 0] & (1 << xbit))? |
| 530 |
(fgcolor & 255) : |
| 531 |
(bgcolor & 255); |
| 532 |
pixels[xbit + 8] = (dma_buf[i*4 |
| 533 |
+ j*2 + 1] & (1 << xbit))? |
| 534 |
(fgcolor & 255) : |
| 535 |
(bgcolor & 255); |
| 536 |
} |
| 537 |
} |
| 538 |
|
| 539 |
memcpy(d->vfb_data->framebuffer + ((y+suby) |
| 540 |
* PX_XSIZE + x) * bytesperpixel, |
| 541 |
pixels, pixels_len * bytesperpixel); |
| 542 |
|
| 543 |
if (y+suby < d->vfb_data->update_y1) |
| 544 |
d->vfb_data->update_y1 = y+suby; |
| 545 |
if (y+suby > d->vfb_data->update_y2) |
| 546 |
d->vfb_data->update_y2 = y+suby; |
| 547 |
|
| 548 |
suby ++; |
| 549 |
} |
| 550 |
|
| 551 |
if (x < d->vfb_data->update_x1) |
| 552 |
d->vfb_data->update_x1 = x; |
| 553 |
if (x2 > d->vfb_data->update_x2) |
| 554 |
d->vfb_data->update_x2 = x2; |
| 555 |
} |
| 556 |
} |
| 557 |
} |
| 558 |
|
| 559 |
|
| 560 |
/* |
| 561 |
* dev_px_access(): |
| 562 |
*/ |
| 563 |
int dev_px_access(struct cpu *cpu, struct memory *mem, uint64_t relative_addr, |
| 564 |
unsigned char *data, size_t len, int writeflag, void *extra) |
| 565 |
{ |
| 566 |
uint64_t idata = 0, odata = 0; |
| 567 |
struct px_data *d = extra; |
| 568 |
int i; |
| 569 |
|
| 570 |
idata = memory_readmax64(cpu, data, len); |
| 571 |
|
| 572 |
if (relative_addr < 0x0c0000) { |
| 573 |
/* |
| 574 |
* DMA poll: a read from this address should start a DMA |
| 575 |
* transfer, and return 1 in odata while the DMA is in |
| 576 |
* progress (STAMP_BUSY), and then 0 (STAMP_OK) once we're |
| 577 |
* done. |
| 578 |
* |
| 579 |
* According to NetBSD's pxreg.h, the following formula gets |
| 580 |
* us from system address to DMA address: (v is the system |
| 581 |
* address) |
| 582 |
* |
| 583 |
* dma_addr = ( ( ((v & ~0x7fff) << 3) | |
| 584 |
* (v & 0x7fff) ) & 0x1ffff800) >> 9; |
| 585 |
* |
| 586 |
* Hopefully, this is a good enough reversal of that formula: |
| 587 |
* |
| 588 |
* sys_addr = ((dma_addr << 9) & 0x7800) + |
| 589 |
* ((dma_addr << 6) & 0xffff8000); |
| 590 |
* |
| 591 |
* If the board type is "PX" then the system address is an |
| 592 |
* address in host memory. Otherwise, it is relative to |
| 593 |
* 0x200000 (the i860's memory space on the board). |
| 594 |
*/ |
| 595 |
uint32_t sys_addr; /* system address for DMA transfers */ |
| 596 |
sys_addr = ((relative_addr << 9) & 0x7800) + |
| 597 |
((relative_addr << 6) & 0xffff8000); |
| 598 |
|
| 599 |
/* |
| 600 |
* If the system address is sane enough, then start a DMA |
| 601 |
* transfer: (for the "PX" board type, don't allow obviously |
| 602 |
* too-low physical addresses) |
| 603 |
*/ |
| 604 |
if (sys_addr >= 0x4000 || d->type != DEV_PX_TYPE_PX) |
| 605 |
dev_px_dma(cpu, sys_addr, d); |
| 606 |
|
| 607 |
/* Pretend that it was always OK: */ |
| 608 |
odata = STAMP_OK; |
| 609 |
} |
| 610 |
|
| 611 |
/* N10 sram: */ |
| 612 |
if (relative_addr >= 0x200000 && relative_addr < 0x280000) { |
| 613 |
if (d->type == DEV_PX_TYPE_PX) |
| 614 |
fatal("WARNING: the vdac should be at this " |
| 615 |
"address. overlap problems?\n"); |
| 616 |
|
| 617 |
if (writeflag == MEM_WRITE) { |
| 618 |
for (i=0; i<len; i++) |
| 619 |
d->sram[relative_addr - 0x200000 + i] = data[i]; |
| 620 |
/* NOTE: this return here supresses debug output |
| 621 |
(which would be printed if we continue) */ |
| 622 |
return 1; |
| 623 |
} else { |
| 624 |
/* |
| 625 |
* Huh? Why have I commented out this? TODO |
| 626 |
*/ |
| 627 |
/* for (i=0; i<len; i++) |
| 628 |
data[i] = d->sram[relative_addr - 0x200000 |
| 629 |
+ i]; */ |
| 630 |
odata = 1; |
| 631 |
} |
| 632 |
} |
| 633 |
|
| 634 |
/* TODO: Most of these aren't implemented yet. */ |
| 635 |
|
| 636 |
switch (relative_addr) { |
| 637 |
case 0x180008: /* hsync */ |
| 638 |
if (writeflag==MEM_READ) { |
| 639 |
debug("[ px: read from hsync: 0x%08llx ]\n", |
| 640 |
(long long)odata); |
| 641 |
} else { |
| 642 |
debug("[ px: write to hsync: 0x%08llx ]\n", |
| 643 |
(long long)idata); |
| 644 |
} |
| 645 |
break; |
| 646 |
case 0x18000c: /* hsync2 */ |
| 647 |
if (writeflag==MEM_READ) { |
| 648 |
debug("[ px: read from hsync2: 0x%08llx ]\n", |
| 649 |
(long long)odata); |
| 650 |
} else { |
| 651 |
debug("[ px: write to hsync2: 0x%08llx ]\n", |
| 652 |
(long long)idata); |
| 653 |
} |
| 654 |
break; |
| 655 |
case 0x180010: /* hblank */ |
| 656 |
if (writeflag==MEM_READ) { |
| 657 |
debug("[ px: read from hblank: 0x%08llx ]\n", |
| 658 |
(long long)odata); |
| 659 |
} else { |
| 660 |
debug("[ px: write to hblank: 0x%08llx ]\n", |
| 661 |
(long long)idata); |
| 662 |
} |
| 663 |
break; |
| 664 |
case 0x180014: /* vsync */ |
| 665 |
if (writeflag==MEM_READ) { |
| 666 |
debug("[ px: read from vsync: 0x%08llx ]\n", |
| 667 |
(long long)odata); |
| 668 |
} else { |
| 669 |
debug("[ px: write to vsync: 0x%08llx ]\n", |
| 670 |
(long long)idata); |
| 671 |
} |
| 672 |
break; |
| 673 |
case 0x180018: /* vblank */ |
| 674 |
if (writeflag==MEM_READ) { |
| 675 |
debug("[ px: read from vblank: 0x%08llx ]\n", |
| 676 |
(long long)odata); |
| 677 |
} else { |
| 678 |
debug("[ px: write to vblank: 0x%08llx ]\n", |
| 679 |
(long long)idata); |
| 680 |
} |
| 681 |
break; |
| 682 |
case 0x180020: /* ipdvint */ |
| 683 |
if (writeflag==MEM_READ) { |
| 684 |
odata = d->intr; |
| 685 |
|
| 686 |
/* TODO: how do interrupts work on the pixelstamp boards? */ |
| 687 |
odata = random(); |
| 688 |
|
| 689 |
debug("[ px: read from ipdvint: 0x%08llx ]\n", |
| 690 |
(long long)odata); |
| 691 |
} else { |
| 692 |
d->intr = idata; |
| 693 |
if (idata & STIC_INT_E_WE) |
| 694 |
d->intr &= ~STIC_INT_E; |
| 695 |
if (idata & STIC_INT_V_WE) |
| 696 |
d->intr &= ~STIC_INT_V; |
| 697 |
if (idata & STIC_INT_P_WE) |
| 698 |
d->intr &= ~STIC_INT_P; |
| 699 |
debug("[ px: write to ipdvint: 0x%08llx ]\n", |
| 700 |
(long long)idata); |
| 701 |
} |
| 702 |
break; |
| 703 |
case 0x180028: /* sticsr */ |
| 704 |
if (writeflag==MEM_READ) { |
| 705 |
debug("[ px: read from sticsr: 0x%08llx ]\n", |
| 706 |
(long long)odata); |
| 707 |
} else { |
| 708 |
debug("[ px: write to sticsr: 0x%08llx ]\n", |
| 709 |
(long long)idata); |
| 710 |
} |
| 711 |
break; |
| 712 |
case 0x180038: /* buscsr */ |
| 713 |
if (writeflag==MEM_READ) { |
| 714 |
debug("[ px: read from buscsr: 0x%08llx ]\n", |
| 715 |
(long long)odata); |
| 716 |
} else { |
| 717 |
debug("[ px: write to buscsr: 0x%08llx ]\n", |
| 718 |
(long long)idata); |
| 719 |
} |
| 720 |
break; |
| 721 |
case 0x18003c: /* modcl */ |
| 722 |
if (writeflag==MEM_READ) { |
| 723 |
odata = (d->type << 12) + (d->xconfig << 11) + |
| 724 |
(d->yconfig << 9); |
| 725 |
debug("[ px: read from modcl: 0x%llx ]\n", |
| 726 |
(long long)odata); |
| 727 |
} else { |
| 728 |
debug("[ px: write to modcl: 0x%llx ]\n", |
| 729 |
(long long)idata); |
| 730 |
} |
| 731 |
break; |
| 732 |
default: |
| 733 |
if (writeflag==MEM_READ) { |
| 734 |
debug("[ px: read from addr 0x%x: 0x%llx ]\n", |
| 735 |
(int)relative_addr, (long long)odata); |
| 736 |
} else { |
| 737 |
debug("[ px: write to addr 0x%x: 0x%llx ]\n", |
| 738 |
(int)relative_addr, (long long)idata); |
| 739 |
} |
| 740 |
} |
| 741 |
|
| 742 |
if (writeflag == MEM_READ) |
| 743 |
memory_writemax64(cpu, data, len, odata); |
| 744 |
|
| 745 |
return 1; |
| 746 |
} |
| 747 |
|
| 748 |
|
| 749 |
/* |
| 750 |
* dev_px_init(): |
| 751 |
*/ |
| 752 |
void dev_px_init(struct machine *machine, struct memory *mem, |
| 753 |
uint64_t baseaddr, int px_type, int irq_nr) |
| 754 |
{ |
| 755 |
struct px_data *d; |
| 756 |
|
| 757 |
d = malloc(sizeof(struct px_data)); |
| 758 |
if (d == NULL) { |
| 759 |
fprintf(stderr, "out of memory\n"); |
| 760 |
exit(1); |
| 761 |
} |
| 762 |
memset(d, 0, sizeof(struct px_data)); |
| 763 |
|
| 764 |
d->type = px_type; |
| 765 |
d->irq_nr = irq_nr; |
| 766 |
|
| 767 |
d->xconfig = d->yconfig = 0; /* 4x1 */ |
| 768 |
|
| 769 |
d->bitdepth = 24; |
| 770 |
d->px_name = "(invalid)"; |
| 771 |
|
| 772 |
switch (d->type) { |
| 773 |
case DEV_PX_TYPE_PX: |
| 774 |
d->bitdepth = 8; |
| 775 |
d->px_name = "PX"; |
| 776 |
break; |
| 777 |
case DEV_PX_TYPE_PXG: |
| 778 |
d->bitdepth = 8; |
| 779 |
d->px_name = "PXG"; |
| 780 |
break; |
| 781 |
case DEV_PX_TYPE_PXGPLUS: |
| 782 |
d->px_name = "PXG+"; |
| 783 |
break; |
| 784 |
case DEV_PX_TYPE_PXGPLUSTURBO: |
| 785 |
d->px_name = "PXG+ TURBO"; |
| 786 |
d->xconfig = d->yconfig = 1; /* 5x2 */ |
| 787 |
break; |
| 788 |
default: |
| 789 |
fatal("dev_px_init(): unimplemented px_type\n"); |
| 790 |
} |
| 791 |
|
| 792 |
d->fb_mem = memory_new(PX_XSIZE * PX_YSIZE * d->bitdepth / 8); |
| 793 |
if (d->fb_mem == NULL) { |
| 794 |
fprintf(stderr, "dev_px_init(): out of memory (1)\n"); |
| 795 |
exit(1); |
| 796 |
} |
| 797 |
|
| 798 |
d->vfb_data = dev_fb_init(machine, d->fb_mem, 0, VFB_GENERIC, |
| 799 |
PX_XSIZE, PX_YSIZE, PX_XSIZE, PX_YSIZE, d->bitdepth, d->px_name, 1); |
| 800 |
if (d->vfb_data == NULL) { |
| 801 |
fprintf(stderr, "dev_px_init(): out of memory (2)\n"); |
| 802 |
exit(2); |
| 803 |
} |
| 804 |
|
| 805 |
switch (d->type) { |
| 806 |
case DEV_PX_TYPE_PX: |
| 807 |
dev_bt459_init(machine, mem, baseaddr + 0x200000, 0, |
| 808 |
d->vfb_data, 8, irq_nr, BT459_PX); |
| 809 |
break; |
| 810 |
case DEV_PX_TYPE_PXG: |
| 811 |
case DEV_PX_TYPE_PXGPLUS: |
| 812 |
case DEV_PX_TYPE_PXGPLUSTURBO: |
| 813 |
dev_bt459_init(machine, mem, baseaddr + 0x300000, 0, |
| 814 |
d->vfb_data, d->bitdepth, irq_nr, BT459_PX); |
| 815 |
break; |
| 816 |
default: |
| 817 |
fatal("dev_px_init(): unimplemented px_type\n"); |
| 818 |
} |
| 819 |
|
| 820 |
memory_device_register(mem, "px", baseaddr, DEV_PX_LENGTH, |
| 821 |
dev_px_access, d, MEM_DEFAULT, NULL); |
| 822 |
machine_add_tickfunction(machine, dev_px_tick, d, 14); |
| 823 |
} |
| 824 |
|
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