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/* |
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* Copyright (C) 2003-2007 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_ps2_gs.c,v 1.22 2006/12/30 13:30:58 debug Exp $ |
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* |
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* Playstation 2 "graphics system". |
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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 "device.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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|
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#define DEV_PS2_GS_LENGTH 0x2000 |
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|
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/* NOTE/TODO: This should be the same as in ps2_stuff: */ |
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#define DEV_PS2_GIF_FAKE_BASE 0x50000000 |
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|
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#define N_GS_REGS 0x108 |
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|
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struct gs_data { |
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uint64_t reg[N_GS_REGS]; /* GS registers */ |
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}; |
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|
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#define GS_S_PMODE_REG 0x00 |
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#define GS_S_SMODE1_REG 0x01 |
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#define GS_S_SMODE2_REG 0x02 |
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#define GS_S_SRFSH_REG 0x03 |
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#define GS_S_SYNCH1_REG 0x04 |
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#define GS_S_SYNCH2_REG 0x05 |
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#define GS_S_SYNCV_REG 0x06 |
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#define GS_S_DISPFB1_REG 0x07 |
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#define GS_S_DISPLAY1_REG 0x08 |
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#define GS_S_DISPFB2_REG 0x09 |
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#define GS_S_DISPLAY2_REG 0x0a |
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#define GS_S_EXTBUF_REG0 0x0b |
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#define GS_S_EXTDATA_REG 0x0c |
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#define GS_S_EXTWRITE_REG 0x0d |
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#define GS_S_BGCOLOR_REG 0x0e |
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|
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char *gs_reg_names[15] = { |
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"PMODE", "SMODE1", "SMODE2", "SRFSH", |
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"SYNCH1", "SYNCH2", "SYNCV", "DISPFB1", |
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"DISPLAY1", "DISPFB2", "DISPLAY2", "EXTBUF", |
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"EXTDATA", "EXTWRITE", "BGCOLOR" |
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}; |
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|
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#define GS_S_CSR_REG 0x100 |
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#define GS_S_IMR_REG 0x101 |
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#define GS_S_BUSDIR_REG 0x104 |
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#define GS_S_SIGLBLID_REG 0x108 |
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|
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char *gs_reg_high_names[4] = { |
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"CSR", "IMR", "BUSDIR", "SIGLBLID" |
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}; |
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|
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|
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/* |
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* dev_ps2_gs_access(): |
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*/ |
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DEVICE_ACCESS(ps2_gs) |
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{ |
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uint64_t idata = 0, odata = 0; |
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size_t i; |
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int regnr; |
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struct gs_data *d = extra; |
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|
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if (writeflag == MEM_WRITE) |
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idata = memory_readmax64(cpu, data, len); |
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|
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regnr = relative_addr / 16; |
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if (relative_addr & 0xf) { |
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debug("[ gs unaligned access, addr 0x%x ]\n", |
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(int)relative_addr); |
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return 0; |
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} |
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|
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/* Empty the GS FIFO: */ |
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d->reg[GS_S_CSR_REG] &= ~(3 << 14); |
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d->reg[GS_S_CSR_REG] |= (1 << 14); |
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|
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switch (relative_addr) { |
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default: |
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if (writeflag==MEM_READ) { |
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debug("[ gs read from addr 0x%x ]\n", |
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(int)relative_addr); |
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odata = d->reg[regnr]; |
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} else { |
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debug("[ gs write to addr 0x%x:", (int)relative_addr); |
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for (i=0; i<len; i++) |
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debug(" %02x", data[i]); |
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debug(" ]\n"); |
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d->reg[regnr] = idata; |
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return 1; |
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} |
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} |
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|
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if (writeflag == MEM_READ) |
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memory_writemax64(cpu, data, len, odata); |
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|
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return 1; |
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} |
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|
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|
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/* |
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* devinit_ps2_gs(): |
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* |
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* Initialize the Playstation 2 graphics system. This is a bit tricky. |
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* 'gs' is the memory mapped device, as seen by the main processor. |
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* 'gif' is another thing which has its own memory. DMA is used to |
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* transfer stuff to the gif from the main memory. |
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* There is also a framebuffer, which is separated from the main |
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* memory. |
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* |
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* TODO: Make this clearer. |
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*/ |
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DEVINIT(ps2_gs) |
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{ |
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struct gs_data *d; |
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char str[100]; |
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|
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d = malloc(sizeof(struct gs_data)); |
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if (d == NULL) { |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
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} |
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memset(d, 0, sizeof(struct gs_data)); |
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|
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snprintf(str, sizeof(str) - 1, "ps2_gif addr=0x%llx", |
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(long long)DEV_PS2_GIF_FAKE_BASE); |
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device_add(devinit->machine, str); |
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|
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memory_device_register(devinit->machine->memory, devinit->name, |
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devinit->addr, DEV_PS2_GS_LENGTH, dev_ps2_gs_access, d, |
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DM_DEFAULT, NULL); |
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|
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return 1; |
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} |
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