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/* |
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* Copyright (C) 2003-2005 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_sgi_ip32.c,v 1.29 2005/08/13 08:25:48 debug Exp $ |
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* |
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* SGI IP32 devices. |
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* |
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* o) CRIME |
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* o) MACE |
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* o) MACE PCI bus |
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* o) mec (ethernet) |
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* o) ust (unknown device) |
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* o) mte (memory transfer engine? details unknown) |
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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 "bus_pci.h" |
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#include "console.h" |
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#include "cpu.h" |
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#include "devices.h" |
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#include "emul.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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#include "net.h" |
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|
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#include "crimereg.h" |
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|
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#include "if_mecreg.h" |
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|
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|
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#define CRIME_TICKSHIFT 14 |
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#define CRIME_SPEED_MUL_FACTOR 1 |
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#define CRIME_SPEED_DIV_FACTOR 1 |
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|
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struct macepci_data { |
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struct pci_data *pci_data; |
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uint32_t reg[DEV_MACEPCI_LENGTH / 4]; |
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}; |
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|
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|
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/* |
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* dev_crime_tick(): |
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* |
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* This function simply updates CRIME_TIME each tick. |
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* |
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* The names DIV and MUL may be a bit confusing. Increasing the |
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* MUL factor will result in an OS running on the emulated machine |
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* detecting a faster CPU. Increasing the DIV factor will result |
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* in a slower detected CPU. |
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* |
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* A R10000 is detected as running at |
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* CRIME_SPEED_FACTOR * 66 MHz. (TODO: this is not correct anymore) |
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*/ |
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void dev_crime_tick(struct cpu *cpu, void *extra) |
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{ |
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int j, carry, old, new, add_byte; |
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uint64_t what_to_add = (1<<CRIME_TICKSHIFT) |
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* CRIME_SPEED_DIV_FACTOR / CRIME_SPEED_MUL_FACTOR; |
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struct crime_data *d = extra; |
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|
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j = 0; |
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carry = 0; |
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while (j < 8) { |
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old = d->reg[CRIME_TIME + 7 - j]; |
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add_byte = what_to_add >> ((int64_t)j * 8); |
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add_byte &= 255; |
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new = old + add_byte + carry; |
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d->reg[CRIME_TIME + 7 - j] = new & 255; |
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if (new >= 256) |
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carry = 1; |
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else |
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carry = 0; |
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j++; |
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} |
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} |
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|
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|
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/* |
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* dev_crime_access(): |
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*/ |
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int dev_crime_access(struct cpu *cpu, struct memory *mem, |
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uint64_t relative_addr, unsigned char *data, size_t len, |
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int writeflag, void *extra) |
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{ |
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int i; |
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struct crime_data *d = extra; |
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uint64_t idata; |
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|
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idata = memory_readmax64(cpu, data, len); |
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|
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/* |
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* Set crime version/revision: |
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* |
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* This might not be the most elegant or correct solution, |
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* but it seems that the IP32 PROM likes 0x11 for machines |
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* without graphics, and 0xa1 for machines with graphics. |
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* |
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* NetBSD 2.0 complains about "unknown" crime for 0x11, |
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* but I guess that's something one has to live with. |
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* |
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* (TODO?) |
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*/ |
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d->reg[4] = 0x00; d->reg[5] = 0x00; d->reg[6] = 0x00; |
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d->reg[7] = d->use_fb? 0xa1 : 0x11; |
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|
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/* |
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* Amount of memory. Bit 8 of bank control set ==> 128MB instead |
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* of 32MB per bank (?) |
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* |
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* When the bank control registers contain the same value as the |
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* previous one, that bank is not valid. (?) |
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*/ |
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d->reg[CRM_MEM_BANK_CTRL0 + 6] = 0; /* lowbit set=128MB, clear=32MB */ |
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d->reg[CRM_MEM_BANK_CTRL0 + 7] = 0; /* address * 32MB */ |
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d->reg[CRM_MEM_BANK_CTRL1 + 6] = 0; /* lowbit set=128MB, clear=32MB */ |
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d->reg[CRM_MEM_BANK_CTRL1 + 7] = 1; /* address * 32MB */ |
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|
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if (relative_addr >= CRIME_TIME && relative_addr < CRIME_TIME+8) { |
147 |
if (writeflag == MEM_READ) |
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memcpy(data, &d->reg[relative_addr], len); |
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return 1; |
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} |
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|
152 |
if (writeflag == MEM_WRITE) |
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memcpy(&d->reg[relative_addr], data, len); |
154 |
else |
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memcpy(data, &d->reg[relative_addr], len); |
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|
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if ((relative_addr >= 0x18 && relative_addr <= 0x1f) || |
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(relative_addr+len-1 >= 0x18 && relative_addr+len-1 <= 0x1f)) { |
159 |
/* |
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* Force interrupt re-assertion: |
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* |
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* NOTE: Ugly hack. Hopefully CRMERR is never used. |
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*/ |
164 |
#if 0 |
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/* |
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No. If this is enabled, the mec bugs out on either NetBSD or OpenBSD. |
167 |
TODO. |
168 |
*/ |
169 |
cpu_interrupt_ack(cpu, 8); /* CRM_INT_CRMERR); */ |
170 |
#endif |
171 |
} |
172 |
|
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switch (relative_addr) { |
174 |
case CRIME_CONTROL: /* 0x008 */ |
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/* TODO: 64-bit write to CRIME_CONTROL, but some things |
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(such as NetBSD 1.6.2) write to 0x00c! */ |
177 |
if (writeflag == MEM_WRITE) { |
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/* |
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* 0x200 = watchdog timer (according to NetBSD) |
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* 0x800 = "reboot" used by the IP32 PROM |
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*/ |
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if (idata & 0x200) { |
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idata &= ~0x200; |
184 |
} |
185 |
if (idata & 0x800) { |
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/* This is used by the IP32 PROM's |
187 |
"reboot" command: */ |
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for (i=0; i<cpu->machine->ncpus; i++) |
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cpu->machine->cpus[i]->running = 0; |
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cpu->machine-> |
191 |
exit_without_entering_debugger = 1; |
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idata &= ~0x800; |
193 |
} |
194 |
if (idata != 0) |
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fatal("[ CRIME_CONTROL: unimplemented " |
196 |
"control 0x%016llx ]\n", (long long)idata); |
197 |
} |
198 |
break; |
199 |
#if 0 |
200 |
case CRIME_INTSTAT: /* 0x010, Current interrupt status */ |
201 |
case 0x14: |
202 |
case CRIME_INTMASK: /* 0x018, Current interrupt mask */ |
203 |
case 0x1c: |
204 |
case 0x34: |
205 |
/* don't dump debug info for these */ |
206 |
break; |
207 |
#endif |
208 |
default: |
209 |
if (writeflag==MEM_READ) { |
210 |
debug("[ crime: read from 0x%x, len=%i:", |
211 |
(int)relative_addr, len); |
212 |
for (i=0; i<len; i++) |
213 |
debug(" %02x", data[i]); |
214 |
debug(" ]\n"); |
215 |
} else { |
216 |
debug("[ crime: write to 0x%x:", (int)relative_addr); |
217 |
for (i=0; i<len; i++) |
218 |
debug(" %02x", data[i]); |
219 |
debug(" (len=%i) ]\n", len); |
220 |
} |
221 |
} |
222 |
|
223 |
return 1; |
224 |
} |
225 |
|
226 |
|
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/* |
228 |
* dev_crime_init(): |
229 |
*/ |
230 |
struct crime_data *dev_crime_init(struct machine *machine, struct memory *mem, |
231 |
uint64_t baseaddr, int irq_nr, int use_fb) |
232 |
{ |
233 |
struct crime_data *d; |
234 |
|
235 |
d = malloc(sizeof(struct crime_data)); |
236 |
if (d == NULL) { |
237 |
fprintf(stderr, "out of memory\n"); |
238 |
exit(1); |
239 |
} |
240 |
memset(d, 0, sizeof(struct crime_data)); |
241 |
d->irq_nr = irq_nr; |
242 |
d->use_fb = use_fb; |
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|
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memory_device_register(mem, "crime", baseaddr, DEV_CRIME_LENGTH, |
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dev_crime_access, d, MEM_DEFAULT, NULL); |
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machine_add_tickfunction(machine, dev_crime_tick, d, CRIME_TICKSHIFT); |
247 |
|
248 |
return d; |
249 |
} |
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|
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|
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/****************************************************************************/ |
253 |
|
254 |
|
255 |
/* |
256 |
* dev_mace_access(): |
257 |
*/ |
258 |
int dev_mace_access(struct cpu *cpu, struct memory *mem, |
259 |
uint64_t relative_addr, unsigned char *data, size_t len, |
260 |
int writeflag, void *extra) |
261 |
{ |
262 |
int i; |
263 |
struct mace_data *d = extra; |
264 |
|
265 |
if (writeflag == MEM_WRITE) |
266 |
memcpy(&d->reg[relative_addr], data, len); |
267 |
else |
268 |
memcpy(data, &d->reg[relative_addr], len); |
269 |
|
270 |
if ((relative_addr >= 0x18 && relative_addr <= 0x1f) || |
271 |
(relative_addr+len-1 >= 0x18 && relative_addr+len-1 <= 0x1f)) |
272 |
cpu_interrupt_ack(cpu, 8); /* CRM_INT_CRMERR); */ |
273 |
|
274 |
switch (relative_addr) { |
275 |
#if 0 |
276 |
case 0x10: /* Current interrupt assertions */ |
277 |
case 0x14: |
278 |
/* don't dump debug info for these */ |
279 |
if (writeflag == MEM_WRITE) { |
280 |
fatal("[ NOTE/TODO: WRITE to mace intr: " |
281 |
"reladdr=0x%x data=", (int)relative_addr); |
282 |
for (i=0; i<len; i++) |
283 |
fatal(" %02x", data[i]); |
284 |
fatal(" (len=%i) ]\n", len); |
285 |
} |
286 |
break; |
287 |
case 0x18: /* Interrupt mask */ |
288 |
case 0x1c: |
289 |
/* don't dump debug info for these */ |
290 |
break; |
291 |
#endif |
292 |
default: |
293 |
if (writeflag == MEM_READ) { |
294 |
debug("[ mace: read from 0x%x:", (int)relative_addr); |
295 |
for (i=0; i<len; i++) |
296 |
debug(" %02x", data[i]); |
297 |
debug(" (len=%i) ]\n", len); |
298 |
} else { |
299 |
debug("[ mace: write to 0x%x:", (int)relative_addr); |
300 |
for (i=0; i<len; i++) |
301 |
debug(" %02x", data[i]); |
302 |
debug(" (len=%i) ]\n", len); |
303 |
} |
304 |
} |
305 |
|
306 |
return 1; |
307 |
} |
308 |
|
309 |
|
310 |
/* |
311 |
* dev_mace_init(): |
312 |
*/ |
313 |
struct mace_data *dev_mace_init(struct memory *mem, uint64_t baseaddr, |
314 |
int irqnr) |
315 |
{ |
316 |
struct mace_data *d; |
317 |
|
318 |
d = malloc(sizeof(struct mace_data)); |
319 |
if (d == NULL) { |
320 |
fprintf(stderr, "out of memory\n"); |
321 |
exit(1); |
322 |
} |
323 |
memset(d, 0, sizeof(struct mace_data)); |
324 |
d->irqnr = irqnr; |
325 |
|
326 |
memory_device_register(mem, "mace", baseaddr, DEV_MACE_LENGTH, |
327 |
dev_mace_access, d, MEM_DEFAULT, NULL); |
328 |
|
329 |
return d; |
330 |
} |
331 |
|
332 |
|
333 |
/****************************************************************************/ |
334 |
|
335 |
|
336 |
/* |
337 |
* dev_macepci_access(): |
338 |
*/ |
339 |
int dev_macepci_access(struct cpu *cpu, struct memory *mem, |
340 |
uint64_t relative_addr, unsigned char *data, size_t len, |
341 |
int writeflag, void *extra) |
342 |
{ |
343 |
struct macepci_data *d = (struct macepci_data *) extra; |
344 |
uint64_t idata = 0, odata=0; |
345 |
int regnr, res = 1; |
346 |
|
347 |
idata = memory_readmax64(cpu, data, len); |
348 |
regnr = relative_addr / sizeof(uint32_t); |
349 |
|
350 |
/* Read from/write to the macepci: */ |
351 |
switch (relative_addr) { |
352 |
case 0x00: /* Error address */ |
353 |
if (writeflag == MEM_WRITE) { |
354 |
} else { |
355 |
odata = 0; |
356 |
} |
357 |
break; |
358 |
case 0x04: /* Error flags */ |
359 |
if (writeflag == MEM_WRITE) { |
360 |
} else { |
361 |
odata = 0x06; |
362 |
} |
363 |
break; |
364 |
case 0x0c: /* Revision number */ |
365 |
if (writeflag == MEM_WRITE) { |
366 |
} else { |
367 |
odata = 0x01; |
368 |
} |
369 |
break; |
370 |
case 0xcf8: /* PCI ADDR */ |
371 |
case 0xcfc: /* PCI DATA */ |
372 |
if (writeflag == MEM_WRITE) { |
373 |
res = bus_pci_access(cpu, mem, relative_addr, |
374 |
&idata, writeflag, d->pci_data); |
375 |
} else { |
376 |
res = bus_pci_access(cpu, mem, relative_addr, |
377 |
&odata, writeflag, d->pci_data); |
378 |
/* odata = 0; */ |
379 |
} |
380 |
break; |
381 |
default: |
382 |
if (writeflag == MEM_WRITE) { |
383 |
debug("[ macepci: unimplemented write to address " |
384 |
"0x%x, data=0x%02x ]\n", |
385 |
(int)relative_addr, (int)idata); |
386 |
} else { |
387 |
debug("[ macepci: unimplemented read from address " |
388 |
"0x%x ]\n", (int)relative_addr); |
389 |
} |
390 |
} |
391 |
|
392 |
if (writeflag == MEM_READ) |
393 |
memory_writemax64(cpu, data, len, odata); |
394 |
|
395 |
return res; |
396 |
} |
397 |
|
398 |
|
399 |
/* |
400 |
* dev_macepci_init(): |
401 |
*/ |
402 |
struct pci_data *dev_macepci_init(struct memory *mem, uint64_t baseaddr, |
403 |
int pciirq) |
404 |
{ |
405 |
struct macepci_data *d = malloc(sizeof(struct macepci_data)); |
406 |
if (d == NULL) { |
407 |
fprintf(stderr, "out of memory\n"); |
408 |
exit(1); |
409 |
} |
410 |
memset(d, 0, sizeof(struct macepci_data)); |
411 |
|
412 |
d->pci_data = bus_pci_init(pciirq); |
413 |
|
414 |
memory_device_register(mem, "macepci", baseaddr, DEV_MACEPCI_LENGTH, |
415 |
dev_macepci_access, (void *)d, MEM_DEFAULT, NULL); |
416 |
|
417 |
return d->pci_data; |
418 |
} |
419 |
|
420 |
|
421 |
/****************************************************************************/ |
422 |
|
423 |
|
424 |
/* |
425 |
* SGI "mec" ethernet. Used in SGI-IP32. |
426 |
* |
427 |
* Study http://www.openbsd.org/cgi-bin/cvsweb/src/sys/arch/sgi/dev/if_mec.c |
428 |
* and/or NetBSD. TODO: |
429 |
* |
430 |
* x) tx and rx interrupts/ring/slot stuff |
431 |
*/ |
432 |
|
433 |
#define MEC_TICK_SHIFT 14 |
434 |
|
435 |
#define MAX_TX_PACKET_LEN 1700 |
436 |
#define N_RX_ADDRESSES 16 |
437 |
|
438 |
struct sgi_mec_data { |
439 |
uint64_t reg[DEV_SGI_MEC_LENGTH / sizeof(uint64_t)]; |
440 |
|
441 |
int irq_nr; |
442 |
unsigned char macaddr[6]; |
443 |
|
444 |
unsigned char cur_tx_packet[MAX_TX_PACKET_LEN]; |
445 |
int cur_tx_packet_len; |
446 |
|
447 |
unsigned char *cur_rx_packet; |
448 |
int cur_rx_packet_len; |
449 |
|
450 |
uint64_t rx_addr[N_RX_ADDRESSES]; |
451 |
int cur_rx_addr_index_write; |
452 |
int cur_rx_addr_index; |
453 |
}; |
454 |
|
455 |
|
456 |
/* |
457 |
* mec_reset(): |
458 |
*/ |
459 |
static void mec_reset(struct sgi_mec_data *d) |
460 |
{ |
461 |
if (d->cur_rx_packet != NULL) |
462 |
free(d->cur_rx_packet); |
463 |
|
464 |
memset(d->reg, 0, sizeof(d->reg)); |
465 |
} |
466 |
|
467 |
|
468 |
/* |
469 |
* mec_control_write(): |
470 |
*/ |
471 |
static void mec_control_write(struct cpu *cpu, struct sgi_mec_data *d, |
472 |
uint64_t x) |
473 |
{ |
474 |
if (x & MEC_MAC_CORE_RESET) { |
475 |
debug("[ sgi_mec: CORE RESET ]\n"); |
476 |
mec_reset(d); |
477 |
} |
478 |
} |
479 |
|
480 |
|
481 |
/* |
482 |
* mec_try_rx(): |
483 |
*/ |
484 |
static int mec_try_rx(struct cpu *cpu, struct sgi_mec_data *d) |
485 |
{ |
486 |
uint64_t base; |
487 |
unsigned char data[8]; |
488 |
int i, res, retval = 0; |
489 |
|
490 |
base = d->rx_addr[d->cur_rx_addr_index]; |
491 |
if (base & 0xfff) |
492 |
fatal("[ mec_try_rx(): WARNING! lowest bits of base are " |
493 |
"non-zero (0x%3x). TODO ]\n", (int)(base & 0xfff)); |
494 |
base &= 0xfffff000ULL; |
495 |
if (base == 0) |
496 |
goto skip; |
497 |
|
498 |
/* printf("rx base = 0x%016llx\n", (long long)base); */ |
499 |
|
500 |
/* Read an rx descriptor from memory: */ |
501 |
res = cpu->memory_rw(cpu, cpu->mem, base, |
502 |
&data[0], sizeof(data), MEM_READ, PHYSICAL); |
503 |
if (!res) |
504 |
return 0; |
505 |
|
506 |
#if 0 |
507 |
printf("{ mec: rxdesc %i: ", d->cur_rx_addr_index); |
508 |
for (i=0; i<sizeof(data); i++) { |
509 |
if ((i & 3) == 0) |
510 |
printf(" "); |
511 |
printf("%02x", data[i]); |
512 |
} |
513 |
printf(" }\n"); |
514 |
#endif |
515 |
|
516 |
/* Is this descriptor already in use? */ |
517 |
if (data[0] & 0x80) { |
518 |
/* printf("INTERRUPT for base = 0x%x\n", (int)base); */ |
519 |
goto skip_and_advance; |
520 |
} |
521 |
|
522 |
if (d->cur_rx_packet == NULL && |
523 |
net_ethernet_rx_avail(cpu->machine->emul->net, d)) |
524 |
net_ethernet_rx(cpu->machine->emul->net, d, |
525 |
&d->cur_rx_packet, &d->cur_rx_packet_len); |
526 |
|
527 |
if (d->cur_rx_packet == NULL) |
528 |
goto skip; |
529 |
|
530 |
/* Copy the packet data: */ |
531 |
/* printf("RX: "); */ |
532 |
for (i=0; i<d->cur_rx_packet_len; i++) { |
533 |
res = cpu->memory_rw(cpu, cpu->mem, base + 32 + i + 2, |
534 |
d->cur_rx_packet + i, 1, MEM_WRITE, PHYSICAL); |
535 |
/* printf(" %02x", d->cur_rx_packet[i]); */ |
536 |
} |
537 |
/* printf("\n"); */ |
538 |
|
539 |
#if 0 |
540 |
printf("RX: %i bytes, index %i, base = 0x%x\n", |
541 |
d->cur_rx_packet_len, d->cur_rx_addr_index, (int)base); |
542 |
#endif |
543 |
|
544 |
/* 4 bytes of CRC at the end. Hm. TODO */ |
545 |
d->cur_rx_packet_len += 4; |
546 |
|
547 |
memset(data, 0, sizeof(data)); |
548 |
data[6] = (d->cur_rx_packet_len >> 8) & 255; |
549 |
data[7] = d->cur_rx_packet_len & 255; |
550 |
/* TODO: lots of bits :-) */ |
551 |
data[4] = 0x04; /* match MAC */ |
552 |
data[0] = 0x80; /* 0x80 = received. */ |
553 |
res = cpu->memory_rw(cpu, cpu->mem, base, |
554 |
&data[0], sizeof(data), MEM_WRITE, PHYSICAL); |
555 |
|
556 |
/* Free the packet from memory: */ |
557 |
free(d->cur_rx_packet); |
558 |
d->cur_rx_packet = NULL; |
559 |
|
560 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] |= MEC_INT_RX_THRESHOLD; |
561 |
skip_and_advance: |
562 |
d->cur_rx_addr_index ++; |
563 |
d->cur_rx_addr_index %= N_RX_ADDRESSES; |
564 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] &= ~MEC_INT_RX_MCL_FIFO_ALIAS; |
565 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] |= |
566 |
(d->cur_rx_addr_index & 0x1f) << 8; |
567 |
retval = 1; |
568 |
|
569 |
skip: |
570 |
return retval; |
571 |
} |
572 |
|
573 |
|
574 |
/* |
575 |
* mec_try_tx(): |
576 |
*/ |
577 |
static int mec_try_tx(struct cpu *cpu, struct sgi_mec_data *d) |
578 |
{ |
579 |
uint64_t base, addr, dma_base; |
580 |
int tx_ring_ptr, ringread, ringwrite, res, i, j; |
581 |
unsigned char data[32]; |
582 |
int len, start_offset, dma_ptr_nr, dma_len; |
583 |
|
584 |
base = d->reg[MEC_TX_RING_BASE / sizeof(uint64_t)]; |
585 |
tx_ring_ptr = d->reg[MEC_TX_RING_PTR / sizeof(uint64_t)]; |
586 |
|
587 |
if (base == 0) |
588 |
return 0; |
589 |
|
590 |
/* printf("base = 0x%016llx\n", base); */ |
591 |
|
592 |
ringread = tx_ring_ptr & MEC_TX_RING_READ_PTR; |
593 |
ringwrite = tx_ring_ptr & MEC_TX_RING_WRITE_PTR; |
594 |
ringread >>= 16; |
595 |
/* All done? Then abort. */ |
596 |
if (ringread == ringwrite) |
597 |
return 0; |
598 |
|
599 |
tx_ring_ptr &= MEC_TX_RING_READ_PTR; |
600 |
tx_ring_ptr >>= 16; |
601 |
|
602 |
/* Each tx descriptor (+ buffer) is 128 bytes: */ |
603 |
addr = base + tx_ring_ptr*128; |
604 |
res = cpu->memory_rw(cpu, cpu->mem, addr, |
605 |
&data[0], sizeof(data), MEM_READ, PHYSICAL); |
606 |
if (!res) |
607 |
return 0; |
608 |
|
609 |
/* Is this packet transmitted already? */ |
610 |
if (data[0] & 0x80) { |
611 |
fatal("[ mec_try_tx: tx_ring_ptr = %i, already" |
612 |
" transmitted? ]\n", tx_ring_ptr); |
613 |
goto advance_tx; |
614 |
} |
615 |
|
616 |
len = data[6] * 256 + data[7]; |
617 |
start_offset = data[5] & 0x7f; |
618 |
|
619 |
/* Is this packet empty? Then don't transmit. */ |
620 |
if (len == 0) |
621 |
return 0; |
622 |
|
623 |
/* Hm. Is len one too little? TODO */ |
624 |
len ++; |
625 |
|
626 |
#if 0 |
627 |
printf("{ mec: txdesc %i: ", tx_ring_ptr); |
628 |
for (i=0; i<sizeof(data); i++) { |
629 |
if ((i & 3) == 0) |
630 |
printf(" "); |
631 |
printf("%02x", data[i]); |
632 |
} |
633 |
printf(" }\n"); |
634 |
#endif |
635 |
dma_ptr_nr = 0; |
636 |
|
637 |
j = 0; |
638 |
d->cur_tx_packet_len = len; |
639 |
|
640 |
for (i=start_offset; i<start_offset+len; i++) { |
641 |
unsigned char ch; |
642 |
|
643 |
if ((i & 0x7f) == 0x00) |
644 |
break; |
645 |
|
646 |
res = cpu->memory_rw(cpu, cpu->mem, addr + i, |
647 |
&ch, sizeof(ch), MEM_READ, PHYSICAL); |
648 |
/* printf(" %02x", ch); */ |
649 |
|
650 |
d->cur_tx_packet[j++] = ch; |
651 |
if (j >= MAX_TX_PACKET_LEN) { |
652 |
fatal("[ mec_try_tx: packet too large? ]\n"); |
653 |
break; |
654 |
} |
655 |
} |
656 |
/* printf("\n"); */ |
657 |
|
658 |
if (j < len) { |
659 |
/* Continue with DMA: */ |
660 |
for (;;) { |
661 |
dma_ptr_nr ++; |
662 |
if (dma_ptr_nr >= 4) |
663 |
break; |
664 |
if (!(data[4] & (0x01 << dma_ptr_nr))) |
665 |
break; |
666 |
dma_base = (data[dma_ptr_nr * 8 + 4] << 24) |
667 |
+ (data[dma_ptr_nr * 8 + 5] << 16) |
668 |
+ (data[dma_ptr_nr * 8 + 6] << 8) |
669 |
+ (data[dma_ptr_nr * 8 + 7]); |
670 |
dma_base &= 0xfffffff8ULL; |
671 |
dma_len = (data[dma_ptr_nr * 8 + 2] << 8) |
672 |
+ (data[dma_ptr_nr * 8 + 3]) + 1; |
673 |
|
674 |
/* printf("dma_base = %08x, dma_len = %i\n", |
675 |
(int)dma_base, dma_len); */ |
676 |
|
677 |
while (dma_len > 0) { |
678 |
unsigned char ch; |
679 |
res = cpu->memory_rw(cpu, cpu->mem, dma_base, |
680 |
&ch, sizeof(ch), MEM_READ, PHYSICAL); |
681 |
/* printf(" %02x", ch); */ |
682 |
|
683 |
d->cur_tx_packet[j++] = ch; |
684 |
if (j >= MAX_TX_PACKET_LEN) { |
685 |
fatal("[ mec_try_tx: packet too large?" |
686 |
" ]\n"); |
687 |
break; |
688 |
} |
689 |
dma_base ++; |
690 |
dma_len --; |
691 |
} |
692 |
} |
693 |
} |
694 |
|
695 |
if (j < len) |
696 |
fatal("[ mec_try_tx: not enough data? ]\n"); |
697 |
|
698 |
net_ethernet_tx(cpu->machine->emul->net, d, |
699 |
d->cur_tx_packet, d->cur_tx_packet_len); |
700 |
|
701 |
/* see openbsd's if_mec.c for details */ |
702 |
if (data[4] & 0x01) { |
703 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] |= |
704 |
MEC_INT_TX_PACKET_SENT; |
705 |
} |
706 |
memset(data, 0, 6); /* last 2 bytes are len */ |
707 |
data[0] = 0x80; |
708 |
data[5] = 0x80; |
709 |
|
710 |
res = cpu->memory_rw(cpu, cpu->mem, addr, |
711 |
&data[0], sizeof(data), MEM_WRITE, PHYSICAL); |
712 |
|
713 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] |= MEC_INT_TX_EMPTY; |
714 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] |= MEC_INT_TX_PACKET_SENT; |
715 |
|
716 |
advance_tx: |
717 |
/* Advance the ring Read ptr. */ |
718 |
tx_ring_ptr = d->reg[MEC_TX_RING_PTR / sizeof(uint64_t)]; |
719 |
ringread = tx_ring_ptr & MEC_TX_RING_READ_PTR; |
720 |
ringwrite = tx_ring_ptr & MEC_TX_RING_WRITE_PTR; |
721 |
|
722 |
ringread = (ringread >> 16) + 1; |
723 |
ringread &= 63; |
724 |
ringread <<= 16; |
725 |
|
726 |
d->reg[MEC_TX_RING_PTR / sizeof(uint64_t)] = |
727 |
(ringwrite & MEC_TX_RING_WRITE_PTR) | |
728 |
(ringread & MEC_TX_RING_READ_PTR); |
729 |
|
730 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] &= |
731 |
~MEC_INT_TX_RING_BUFFER_ALIAS; |
732 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] |= |
733 |
(d->reg[MEC_TX_RING_PTR / sizeof(uint64_t)] & |
734 |
MEC_INT_TX_RING_BUFFER_ALIAS); |
735 |
|
736 |
return 1; |
737 |
} |
738 |
|
739 |
|
740 |
/* |
741 |
* dev_sgi_mec_tick(): |
742 |
*/ |
743 |
void dev_sgi_mec_tick(struct cpu *cpu, void *extra) |
744 |
{ |
745 |
struct sgi_mec_data *d = (struct sgi_mec_data *) extra; |
746 |
int n = 0; |
747 |
|
748 |
while (mec_try_tx(cpu, d)) |
749 |
; |
750 |
|
751 |
while (mec_try_rx(cpu, d) && n < 16) |
752 |
n++; |
753 |
|
754 |
/* Interrupts: (TODO: only when enabled) */ |
755 |
if (d->reg[MEC_INT_STATUS / sizeof(uint64_t)] & MEC_INT_STATUS_MASK) { |
756 |
#if 0 |
757 |
printf("[%02x]", (int)(d->reg[MEC_INT_STATUS / |
758 |
sizeof(uint64_t)] & MEC_INT_STATUS_MASK)); |
759 |
fflush(stdout); |
760 |
#endif |
761 |
cpu_interrupt(cpu, d->irq_nr); |
762 |
} else |
763 |
cpu_interrupt_ack(cpu, d->irq_nr); |
764 |
} |
765 |
|
766 |
|
767 |
/* |
768 |
* dev_sgi_mec_access(): |
769 |
*/ |
770 |
int dev_sgi_mec_access(struct cpu *cpu, struct memory *mem, |
771 |
uint64_t relative_addr, unsigned char *data, size_t len, |
772 |
int writeflag, void *extra) |
773 |
{ |
774 |
struct sgi_mec_data *d = (struct sgi_mec_data *) extra; |
775 |
uint64_t idata = 0, odata = 0; |
776 |
int regnr; |
777 |
|
778 |
idata = memory_readmax64(cpu, data, len); |
779 |
regnr = relative_addr / sizeof(uint64_t); |
780 |
|
781 |
/* Treat most registers as read/write, by default. */ |
782 |
if (writeflag == MEM_WRITE) { |
783 |
switch (relative_addr) { |
784 |
case MEC_INT_STATUS: /* 0x08 */ |
785 |
/* Clear bits on write: (This is just a guess) */ |
786 |
d->reg[regnr] = (d->reg[regnr] & ~0xff) |
787 |
| ((d->reg[regnr] & ~idata) & 0xff); |
788 |
break; |
789 |
case MEC_TX_RING_PTR: /* 0x30 */ |
790 |
idata &= MEC_TX_RING_WRITE_PTR; |
791 |
d->reg[regnr] = (d->reg[regnr] & |
792 |
~MEC_TX_RING_WRITE_PTR) | idata; |
793 |
/* TODO */ |
794 |
break; |
795 |
default: |
796 |
d->reg[regnr] = idata; |
797 |
} |
798 |
} else |
799 |
odata = d->reg[regnr]; |
800 |
|
801 |
switch (relative_addr) { |
802 |
case MEC_MAC_CONTROL: /* 0x00 */ |
803 |
if (writeflag) |
804 |
mec_control_write(cpu, d, idata); |
805 |
else { |
806 |
/* Fake "revision 1": */ |
807 |
odata &= ~MEC_MAC_REVISION; |
808 |
odata |= 1 << MEC_MAC_REVISION_SHIFT; |
809 |
} |
810 |
break; |
811 |
case MEC_INT_STATUS: /* 0x08 */ |
812 |
if (writeflag) |
813 |
debug("[ sgi_mec: write to MEC_INT_STATUS: " |
814 |
"0x%016llx ]\n", (long long)idata); |
815 |
break; |
816 |
case MEC_DMA_CONTROL: /* 0x10 */ |
817 |
if (writeflag) { |
818 |
debug("[ sgi_mec: write to MEC_DMA_CONTROL: " |
819 |
"0x%016llx ]\n", (long long)idata); |
820 |
if (!(idata & MEC_DMA_TX_INT_ENABLE)) { |
821 |
/* This should apparently stop the |
822 |
TX Empty interrupt. */ |
823 |
d->reg[MEC_INT_STATUS / sizeof(uint64_t)] &= |
824 |
~MEC_INT_TX_EMPTY; |
825 |
} |
826 |
} |
827 |
break; |
828 |
case MEC_TX_ALIAS: /* 0x20 */ |
829 |
if (writeflag) { |
830 |
debug("[ sgi_mec: write to MEC_TX_ALIAS: " |
831 |
"0x%016llx ]\n", (long long)idata); |
832 |
} else { |
833 |
debug("[ sgi_mec: read from MEC_TX_ALIAS: " |
834 |
"0x%016llx ]\n", (long long)idata); |
835 |
odata = d->reg[MEC_TX_RING_PTR / sizeof(uint64_t)]; |
836 |
} |
837 |
break; |
838 |
case MEC_RX_ALIAS: /* 0x28 */ |
839 |
if (writeflag) |
840 |
debug("[ sgi_mec: write to MEC_RX_ALIAS: " |
841 |
"0x%016llx ]\n", (long long)idata); |
842 |
break; |
843 |
case MEC_TX_RING_PTR: /* 0x30 */ |
844 |
if (writeflag) |
845 |
debug("[ sgi_mec: write to MEC_TX_RING_PTR: " |
846 |
"0x%016llx ]\n", (long long)idata); |
847 |
break; |
848 |
case MEC_PHY_DATA: /* 0x64 */ |
849 |
if (writeflag) |
850 |
fatal("[ sgi_mec: write to MEC_PHY_DATA: " |
851 |
"0x%016llx ]\n", (long long)idata); |
852 |
else |
853 |
odata = 0; /* ? */ |
854 |
break; |
855 |
case MEC_PHY_ADDRESS: /* 0x6c */ |
856 |
if (writeflag) |
857 |
debug("[ sgi_mec: write to MEC_PHY_ADDRESS: " |
858 |
"0x%016llx ]\n", (long long)idata); |
859 |
break; |
860 |
case MEC_PHY_READ_INITIATE: /* 0x70 */ |
861 |
if (writeflag) |
862 |
debug("[ sgi_mec: write to MEC_PHY_READ_INITIATE: " |
863 |
"0x%016llx ]\n", (long long)idata); |
864 |
break; |
865 |
case 0x74: |
866 |
if (writeflag) |
867 |
debug("[ sgi_mec: write to 0x74: 0x%016llx ]\n", |
868 |
(long long)idata); |
869 |
else |
870 |
debug("[ sgi_mec: read from 0x74 ]\n"); |
871 |
break; |
872 |
case MEC_STATION: /* 0xa0 */ |
873 |
if (writeflag) |
874 |
debug("[ sgi_mec: setting the MAC address to " |
875 |
"%02x:%02x:%02x:%02x:%02x:%02x ]\n", |
876 |
(idata >> 40) & 255, (idata >> 32) & 255, |
877 |
(idata >> 24) & 255, (idata >> 16) & 255, |
878 |
(idata >> 8) & 255, (idata >> 0) & 255); |
879 |
break; |
880 |
case MEC_STATION_ALT: /* 0xa8 */ |
881 |
if (writeflag) |
882 |
debug("[ sgi_mec: setting the ALTERNATIVE MAC address" |
883 |
" to %02x:%02x:%02x:%02x:%02x:%02x ]\n", |
884 |
(idata >> 40) & 255, (idata >> 32) & 255, |
885 |
(idata >> 24) & 255, (idata >> 16) & 255, |
886 |
(idata >> 8) & 255, (idata >> 0) & 255); |
887 |
break; |
888 |
case MEC_MULTICAST: /* 0xb0 */ |
889 |
if (writeflag) |
890 |
debug("[ sgi_mec: write to MEC_MULTICAST: " |
891 |
"0x%016llx ]\n", (long long)idata); |
892 |
break; |
893 |
case MEC_TX_RING_BASE: /* 0xb8 */ |
894 |
if (writeflag) |
895 |
debug("[ sgi_mec: write to MEC_TX_RING_BASE: " |
896 |
"0x%016llx ]\n", (long long)idata); |
897 |
break; |
898 |
case MEC_MCL_RX_FIFO: /* 0x100 */ |
899 |
if (writeflag) { |
900 |
debug("[ sgi_mec: write to MEC_MCL_RX_FIFO: 0x" |
901 |
"%016llx ]\n", (long long)idata); |
902 |
d->rx_addr[d->cur_rx_addr_index_write] = idata; |
903 |
d->cur_rx_addr_index_write ++; |
904 |
d->cur_rx_addr_index_write %= N_RX_ADDRESSES; |
905 |
} |
906 |
break; |
907 |
default: |
908 |
if (writeflag == MEM_WRITE) |
909 |
fatal("[ sgi_mec: unimplemented write to address" |
910 |
" 0x%llx, data=0x%016llx ]\n", |
911 |
(long long)relative_addr, (long long)idata); |
912 |
else |
913 |
fatal("[ sgi_mec: unimplemented read from address" |
914 |
" 0x%llx ]\n", (long long)relative_addr); |
915 |
} |
916 |
|
917 |
if (writeflag == MEM_READ) |
918 |
memory_writemax64(cpu, data, len, odata); |
919 |
|
920 |
dev_sgi_mec_tick(cpu, extra); |
921 |
|
922 |
return 1; |
923 |
} |
924 |
|
925 |
|
926 |
/* |
927 |
* dev_sgi_mec_init(): |
928 |
*/ |
929 |
void dev_sgi_mec_init(struct machine *machine, struct memory *mem, |
930 |
uint64_t baseaddr, int irq_nr, unsigned char *macaddr) |
931 |
{ |
932 |
char *name2; |
933 |
size_t nlen = 55; |
934 |
struct sgi_mec_data *d = malloc(sizeof(struct sgi_mec_data)); |
935 |
|
936 |
if (d == NULL) { |
937 |
fprintf(stderr, "out of memory\n"); |
938 |
exit(1); |
939 |
} |
940 |
memset(d, 0, sizeof(struct sgi_mec_data)); |
941 |
d->irq_nr = irq_nr; |
942 |
memcpy(d->macaddr, macaddr, 6); |
943 |
|
944 |
mec_reset(d); |
945 |
|
946 |
name2 = malloc(nlen); |
947 |
if (name2 == NULL) { |
948 |
fprintf(stderr, "out of memory in dev_sgi_mec_init()\n"); |
949 |
exit(1); |
950 |
} |
951 |
snprintf(name2, nlen, "mec [%02x:%02x:%02x:%02x:%02x:%02x]", |
952 |
d->macaddr[0], d->macaddr[1], d->macaddr[2], |
953 |
d->macaddr[3], d->macaddr[4], d->macaddr[5]); |
954 |
|
955 |
memory_device_register(mem, name2, baseaddr, |
956 |
DEV_SGI_MEC_LENGTH, dev_sgi_mec_access, (void *)d, |
957 |
MEM_DEFAULT, NULL); |
958 |
|
959 |
machine_add_tickfunction(machine, dev_sgi_mec_tick, d, MEC_TICK_SHIFT); |
960 |
|
961 |
net_add_nic(machine->emul->net, d, macaddr); |
962 |
} |
963 |
|
964 |
|
965 |
/****************************************************************************/ |
966 |
|
967 |
|
968 |
struct sgi_ust_data { |
969 |
uint64_t reg[DEV_SGI_UST_LENGTH / sizeof(uint64_t)]; |
970 |
}; |
971 |
|
972 |
|
973 |
/* |
974 |
* dev_sgi_ust_access(): |
975 |
*/ |
976 |
int dev_sgi_ust_access(struct cpu *cpu, struct memory *mem, |
977 |
uint64_t relative_addr, unsigned char *data, size_t len, |
978 |
int writeflag, void *extra) |
979 |
{ |
980 |
struct sgi_ust_data *d = (struct sgi_ust_data *) extra; |
981 |
uint64_t idata = 0, odata = 0; |
982 |
int regnr; |
983 |
|
984 |
idata = memory_readmax64(cpu, data, len); |
985 |
regnr = relative_addr / sizeof(uint64_t); |
986 |
|
987 |
/* Treat all registers as read/write, by default. */ |
988 |
if (writeflag == MEM_WRITE) |
989 |
d->reg[regnr] = idata; |
990 |
else |
991 |
odata = d->reg[regnr]; |
992 |
|
993 |
switch (relative_addr) { |
994 |
case 0: |
995 |
d->reg[regnr] += 0x2710; |
996 |
break; |
997 |
default: |
998 |
if (writeflag == MEM_WRITE) |
999 |
debug("[ sgi_ust: unimplemented write to " |
1000 |
"address 0x%llx, data=0x%016llx ]\n", |
1001 |
(long long)relative_addr, (long long)idata); |
1002 |
else |
1003 |
debug("[ sgi_ust: unimplemented read from address" |
1004 |
" 0x%llx ]\n", (long long)relative_addr); |
1005 |
} |
1006 |
|
1007 |
if (writeflag == MEM_READ) |
1008 |
memory_writemax64(cpu, data, len, odata); |
1009 |
|
1010 |
return 1; |
1011 |
} |
1012 |
|
1013 |
|
1014 |
/* |
1015 |
* dev_sgi_ust_init(): |
1016 |
*/ |
1017 |
void dev_sgi_ust_init(struct memory *mem, uint64_t baseaddr) |
1018 |
{ |
1019 |
struct sgi_ust_data *d = malloc(sizeof(struct sgi_ust_data)); |
1020 |
if (d == NULL) { |
1021 |
fprintf(stderr, "out of memory\n"); |
1022 |
exit(1); |
1023 |
} |
1024 |
memset(d, 0, sizeof(struct sgi_ust_data)); |
1025 |
|
1026 |
memory_device_register(mem, "sgi_ust", baseaddr, |
1027 |
DEV_SGI_UST_LENGTH, dev_sgi_ust_access, (void *)d, |
1028 |
MEM_DEFAULT, NULL); |
1029 |
} |
1030 |
|
1031 |
|
1032 |
/****************************************************************************/ |
1033 |
|
1034 |
|
1035 |
/* |
1036 |
* SGI "mte". This device seems to be an accelerator for copying/clearing |
1037 |
* memory. Used by (at least) the SGI O2 PROM. |
1038 |
* |
1039 |
* Actually, it seems to be used for graphics output as well. (?) |
1040 |
* TODO: Run the O2's prom and try to figure out what it really does. |
1041 |
*/ |
1042 |
/* #define debug fatal */ |
1043 |
#define ZERO_CHUNK_LEN 4096 |
1044 |
|
1045 |
struct sgi_mte_data { |
1046 |
uint64_t reg[DEV_SGI_MTE_LENGTH / sizeof(uint64_t)]; |
1047 |
}; |
1048 |
|
1049 |
/* |
1050 |
* dev_sgi_mte_access(): |
1051 |
*/ |
1052 |
int dev_sgi_mte_access(struct cpu *cpu, struct memory *mem, |
1053 |
uint64_t relative_addr, unsigned char *data, size_t len, |
1054 |
int writeflag, void *extra) |
1055 |
{ |
1056 |
struct sgi_mte_data *d = (struct sgi_mte_data *) extra; |
1057 |
uint64_t first_addr, last_addr, zerobuflen, fill_addr, fill_len; |
1058 |
unsigned char zerobuf[ZERO_CHUNK_LEN]; |
1059 |
uint64_t idata = 0, odata = 0; |
1060 |
int regnr; |
1061 |
|
1062 |
idata = memory_readmax64(cpu, data, len); |
1063 |
regnr = relative_addr / sizeof(uint64_t); |
1064 |
|
1065 |
/* Treat all registers as read/write, by default. */ |
1066 |
if (writeflag == MEM_WRITE) |
1067 |
d->reg[regnr] = idata; |
1068 |
else |
1069 |
odata = d->reg[regnr]; |
1070 |
|
1071 |
/* |
1072 |
* I've not found any docs about this 'mte' device at all, so this is |
1073 |
* just a guess. The mte seems to be used for copying and zeroing |
1074 |
* chunks of memory. |
1075 |
* |
1076 |
* [ sgi_mte: unimplemented write to address 0x3030, data=0x00000000003da000 ] <-- first address |
1077 |
* [ sgi_mte: unimplemented write to address 0x3038, data=0x00000000003f9fff ] <-- last address |
1078 |
* [ sgi_mte: unimplemented write to address 0x3018, data=0x0000000000000000 ] <-- what to fill? |
1079 |
* [ sgi_mte: unimplemented write to address 0x3008, data=0x00000000ffffffff ] <-- ? |
1080 |
* [ sgi_mte: unimplemented write to address 0x3800, data=0x0000000000000011 ] <-- operation (0x11 = zerofill) |
1081 |
* |
1082 |
* [ sgi_mte: unimplemented write to address 0x1700, data=0x80001ea080001ea1 ] <-- also containing the address to fill (?) |
1083 |
* [ sgi_mte: unimplemented write to address 0x1708, data=0x80001ea280001ea3 ] |
1084 |
* [ sgi_mte: unimplemented write to address 0x1710, data=0x80001ea480001ea5 ] |
1085 |
* ... |
1086 |
* [ sgi_mte: unimplemented write to address 0x1770, data=0x80001e9c80001e9d ] |
1087 |
* [ sgi_mte: unimplemented write to address 0x1778, data=0x80001e9e80001e9f ] |
1088 |
*/ |
1089 |
switch (relative_addr) { |
1090 |
|
1091 |
/* No warnings for these: */ |
1092 |
case 0x3030: |
1093 |
case 0x3038: |
1094 |
break; |
1095 |
|
1096 |
/* Unknown, but no warning: */ |
1097 |
case 0x4000: |
1098 |
case 0x3018: |
1099 |
case 0x3008: |
1100 |
case 0x1700: |
1101 |
case 0x1708: |
1102 |
case 0x1710: |
1103 |
case 0x1718: |
1104 |
case 0x1720: |
1105 |
case 0x1728: |
1106 |
case 0x1730: |
1107 |
case 0x1738: |
1108 |
case 0x1740: |
1109 |
case 0x1748: |
1110 |
case 0x1750: |
1111 |
case 0x1758: |
1112 |
case 0x1760: |
1113 |
case 0x1768: |
1114 |
case 0x1770: |
1115 |
case 0x1778: |
1116 |
break; |
1117 |
|
1118 |
#if 1 |
1119 |
case 0x2074: |
1120 |
{ |
1121 |
/* This seems to have to do with graphical output: |
1122 |
0x000000000xxx0yyy where x is usually 0..1279 and y is 0..1023? */ |
1123 |
/* Gaaah... */ |
1124 |
int x = (idata >> 16) & 0xfff; |
1125 |
int y = idata & 0xfff; |
1126 |
int addr; |
1127 |
unsigned char buf[3]; |
1128 |
printf("x = %i, y = %i\n", x, y); |
1129 |
buf[0] = buf[1] = buf[2] = random() | 0x80; |
1130 |
addr = (x/2 + (y/2)*640) * 3; |
1131 |
if (x < 640 && y < 480) |
1132 |
cpu->memory_rw(cpu, cpu->mem, 0x38000000 + addr, |
1133 |
buf, 3, MEM_WRITE, NO_EXCEPTIONS | PHYSICAL); |
1134 |
|
1135 |
} |
1136 |
break; |
1137 |
#endif |
1138 |
|
1139 |
/* Operations: */ |
1140 |
case 0x3800: |
1141 |
if (writeflag == MEM_WRITE) { |
1142 |
switch (idata) { |
1143 |
case 0x11: /* zerofill */ |
1144 |
first_addr = d->reg[0x3030 / sizeof(uint64_t)]; |
1145 |
last_addr = d->reg[0x3038 / sizeof(uint64_t)]; |
1146 |
zerobuflen = last_addr - first_addr + 1; |
1147 |
debug("[ sgi_mte: zerofill: first = 0x%016llx, last = 0x%016llx, length = 0x%llx ]\n", |
1148 |
(long long)first_addr, (long long)last_addr, (long long)zerobuflen); |
1149 |
|
1150 |
/* TODO: is there a better way to implement this? */ |
1151 |
memset(zerobuf, 0, sizeof(zerobuf)); |
1152 |
fill_addr = first_addr; |
1153 |
while (zerobuflen != 0) { |
1154 |
if (zerobuflen > sizeof(zerobuf)) |
1155 |
fill_len = sizeof(zerobuf); |
1156 |
else |
1157 |
fill_len = zerobuflen; |
1158 |
cpu->memory_rw(cpu, mem, fill_addr, |
1159 |
zerobuf, fill_len, MEM_WRITE, |
1160 |
NO_EXCEPTIONS | PHYSICAL); |
1161 |
fill_addr += fill_len; |
1162 |
zerobuflen -= sizeof(zerobuf); |
1163 |
} |
1164 |
|
1165 |
break; |
1166 |
default: |
1167 |
fatal("[ sgi_mte: UNKNOWN operation 0x%x ]\n", idata); |
1168 |
} |
1169 |
} |
1170 |
break; |
1171 |
default: |
1172 |
if (writeflag == MEM_WRITE) |
1173 |
debug("[ sgi_mte: unimplemented write to address 0x%llx, data=0x%016llx ]\n", (long long)relative_addr, (long long)idata); |
1174 |
else |
1175 |
debug("[ sgi_mte: unimplemented read from address 0x%llx ]\n", (long long)relative_addr); |
1176 |
} |
1177 |
|
1178 |
if (writeflag == MEM_READ) |
1179 |
memory_writemax64(cpu, data, len, odata); |
1180 |
|
1181 |
return 1; |
1182 |
} |
1183 |
|
1184 |
|
1185 |
/* |
1186 |
* dev_sgi_mte_init(): |
1187 |
*/ |
1188 |
void dev_sgi_mte_init(struct memory *mem, uint64_t baseaddr) |
1189 |
{ |
1190 |
struct sgi_mte_data *d = malloc(sizeof(struct sgi_mte_data)); |
1191 |
if (d == NULL) { |
1192 |
fprintf(stderr, "out of memory\n"); |
1193 |
exit(1); |
1194 |
} |
1195 |
memset(d, 0, sizeof(struct sgi_mte_data)); |
1196 |
|
1197 |
memory_device_register(mem, "sgi_mte", baseaddr, DEV_SGI_MTE_LENGTH, |
1198 |
dev_sgi_mte_access, (void *)d, MEM_DEFAULT, NULL); |
1199 |
} |
1200 |
|