/[gxemul]/trunk/src/devices/dev_gt.c
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Annotation of /trunk/src/devices/dev_gt.c

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Revision 44 - (hide annotations)
Mon Oct 8 16:22:56 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 8216 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1632 2007/09/11 21:46:35 debug Exp $
20070616	Implementing the MIPS32/64 revision 2 "ror" instruction.
20070617	Adding a struct for each physpage which keeps track of which
		ranges within that page (base offset, length) that are
		continuously translatable. When running with native code
		generation enabled (-b), a range is added after each read-
		ahead loop.
		Experimenting with using the physical program counter sample
		data (implemented 20070608) together with the "translatable
		range" information, to figure out which physical address ranges
		would be worth translating to native code (if the number of
		samples falling within a range is above a certain threshold).
20070618	Adding automagic building of .index comment files for
		src/file/, src/promemul/, src src/useremul/ as well.
		Adding a "has been translated" bit to the ranges, so that only
		not-yet-translated ranges will be sampled.
20070619	Moving src/cpu.c and src/memory_rw.c into src/cpus/,
		src/device.c into src/devices/, and src/machine.c into
		src/machines/.
		Creating a skeleton cc/ld native backend module; beginning on
		the function which will detect cc command line, etc.
20070620	Continuing on the native code generation infrastructure.
20070621	Moving src/x11.c and src/console.c into a new src/console/
		subdir (for everything that is console or framebuffer related).
		Moving src/symbol*.c into a new src/symbol/, which should
		contain anything that is symbol handling related.
20070624	Making the program counter sampling threshold a "settings
		variable" (sampling_threshold), i.e. it can now be changed
		during runtime.
		Switching the RELEASE notes format from plain text to HTML.
		If the TMPDIR environment variable is set, it is used instead
		of "/tmp" for temporary files.
		Continuing on the cc/ld backend: simple .c code is generated,
		the compiler and linker are called, etc.
		Adding detection of host architecture to the configure script
		(again), and adding icache invalidation support (only
		implemented for Alpha hosts so far).
20070625	Simplifying the program counter sampling mechanism.
20070626	Removing the cc/ld native code generation stuff, program
		counter sampling, etc; it would not have worked well in the
		general case.
20070627	Removing everything related to native code generation.
20070629	Removing the (practically unusable) support for multiple
		emulations. (The single emulation allowed now still supports
		multiple simultaneous machines, as before.)
		Beginning on PCCTWO and M88K interrupts.
20070723	Adding a dummy skeleton for emulation of M32R processors.
20070901	Fixing a warning found by "gcc version 4.3.0 20070817
		(experimental)" on amd64.
20070905	Removing some more traces of the old "multiple emulations"
		code.
		Also looking in /usr/local/include and /usr/local/lib for
		X11 libs, when running configure.
20070909	Minor updates to the guest OS install instructions, in
		preparation for the NetBSD 4.0 release.
20070918	More testing of NetBSD 4.0 RC1.

1 dpavlin 4 /*
2 dpavlin 34 * Copyright (C) 2003-2007 Anders Gavare. All rights reserved.
3 dpavlin 4 *
4     * Redistribution and use in source and binary forms, with or without
5     * modification, are permitted provided that the following conditions are met:
6     *
7     * 1. Redistributions of source code must retain the above copyright
8     * notice, this list of conditions and the following disclaimer.
9     * 2. Redistributions in binary form must reproduce the above copyright
10     * notice, this list of conditions and the following disclaimer in the
11     * documentation and/or other materials provided with the distribution.
12     * 3. The name of the author may not be used to endorse or promote products
13     * derived from this software without specific prior written permission.
14     *
15     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25     * SUCH DAMAGE.
26     *
27     *
28 dpavlin 44 * $Id: dev_gt.c,v 1.53 2007/06/16 05:09:55 debug Exp $
29 dpavlin 4 *
30 dpavlin 42 * COMMENT: Galileo Technology GT-64xxx PCI controller
31 dpavlin 4 *
32 dpavlin 10 * GT-64011 Used in Cobalt machines.
33     * GT-64120 Used in evbmips machines (Malta).
34 dpavlin 22 * GT-64260 Used in mvmeppc machines.
35 dpavlin 4 */
36    
37     #include <stdio.h>
38     #include <stdlib.h>
39     #include <string.h>
40    
41     #include "bus_pci.h"
42     #include "cpu.h"
43     #include "devices.h"
44 dpavlin 34 #include "interrupt.h"
45 dpavlin 4 #include "machine.h"
46     #include "memory.h"
47     #include "misc.h"
48 dpavlin 32 #include "timer.h"
49 dpavlin 4
50 dpavlin 28 #include "gtreg.h"
51 dpavlin 4
52 dpavlin 28
53 dpavlin 12 #define TICK_SHIFT 14
54 dpavlin 4
55 dpavlin 12 /* #define debug fatal */
56    
57 dpavlin 20 #define PCI_PRODUCT_GALILEO_GT64011 0x4146 /* GT-64011 */
58     #define PCI_PRODUCT_GALILEO_GT64120 0x4620 /* GT-64120 */
59 dpavlin 22 #define PCI_PRODUCT_GALILEO_GT64260 0x6430 /* GT-64260 */
60 dpavlin 4
61 dpavlin 28
62 dpavlin 4 struct gt_data {
63 dpavlin 28 int type;
64 dpavlin 4
65 dpavlin 32 struct timer *timer;
66 dpavlin 34 struct interrupt timer0_irq;
67 dpavlin 32 int interrupt_hz;
68     int pending_timer0_interrupts;
69    
70 dpavlin 30 /* Address decode registers: */
71     uint32_t decode[GT_N_DECODE_REGS];
72 dpavlin 28
73     struct pci_data *pci_data;
74 dpavlin 4 };
75    
76    
77 dpavlin 32 /*
78     * timer_tick():
79     *
80     * Called d->interrupt_hz times per (real-world) second.
81     */
82     static void timer_tick(struct timer *timer, void *extra)
83     {
84 dpavlin 42 struct gt_data *d = extra;
85 dpavlin 32 d->pending_timer0_interrupts ++;
86     }
87    
88    
89 dpavlin 28 DEVICE_TICK(gt)
90 dpavlin 4 {
91 dpavlin 42 struct gt_data *d = extra;
92 dpavlin 32 if (d->pending_timer0_interrupts > 0)
93 dpavlin 34 INTERRUPT_ASSERT(d->timer0_irq);
94 dpavlin 4 }
95    
96    
97 dpavlin 22 DEVICE_ACCESS(gt)
98 dpavlin 4 {
99 dpavlin 42 struct gt_data *d = extra;
100 dpavlin 4 uint64_t idata = 0, odata = 0;
101 dpavlin 22 int bus, dev, func, reg;
102     size_t i;
103 dpavlin 4
104 dpavlin 18 if (writeflag == MEM_WRITE)
105     idata = memory_readmax64(cpu, data, len);
106 dpavlin 4
107     switch (relative_addr) {
108 dpavlin 12
109 dpavlin 28 case GT_PCI0IOLD_OFS:
110 dpavlin 30 case GT_PCI0IOHD_OFS:
111     case GT_PCI0M0LD_OFS:
112     case GT_PCI0M0HD_OFS:
113     case GT_PCI0M1LD_OFS:
114     case GT_PCI0M1HD_OFS:
115     case GT_PCI0IOREMAP_OFS:
116     case GT_PCI0M0REMAP_OFS:
117     case GT_PCI0M1REMAP_OFS:
118 dpavlin 28 if (writeflag == MEM_READ) {
119 dpavlin 30 odata = d->decode[relative_addr / 8];
120     debug("[ gt: read from offset 0x%x: 0x%x ]\n",
121     (int)relative_addr, (int)odata);
122 dpavlin 28 } else {
123 dpavlin 30 d->decode[relative_addr / 8] = idata;
124     fatal("[ gt: write to offset 0x%x: 0x%x (TODO) ]\n",
125     (int)relative_addr, (int)idata);
126 dpavlin 12 }
127     break;
128    
129 dpavlin 30 case GT_PCI0_CMD_OFS:
130     if (writeflag == MEM_WRITE) {
131     debug("[ gt: write to GT_PCI0_CMD: 0x%08x (TODO) ]\n",
132 dpavlin 28 (int)idata);
133     } else {
134 dpavlin 30 debug("[ gt: read from GT_PCI0_CMD (0x%08x) (TODO) ]\n",
135     (int)odata);
136 dpavlin 28 }
137     break;
138    
139     case GT_INTR_CAUSE:
140 dpavlin 4 if (writeflag == MEM_WRITE) {
141 dpavlin 28 debug("[ gt: write to GT_INTR_CAUSE: 0x%08x ]\n",
142     (int)idata);
143 dpavlin 4 return 1;
144     } else {
145 dpavlin 28 odata = GTIC_T0EXP;
146 dpavlin 34 INTERRUPT_DEASSERT(d->timer0_irq);
147 dpavlin 4
148 dpavlin 32 if (d->pending_timer0_interrupts > 0)
149     d->pending_timer0_interrupts --;
150    
151 dpavlin 28 debug("[ gt: read from GT_INTR_CAUSE (0x%08x) ]\n",
152     (int)odata);
153 dpavlin 4 }
154     break;
155 dpavlin 12
156 dpavlin 28 case GT_PCI0_INTR_ACK:
157 dpavlin 20 odata = cpu->machine->isa_pic_data.last_int;
158 dpavlin 44 /* TODO: Actually ack the interrupt? */
159 dpavlin 12 break;
160    
161 dpavlin 32 case GT_TIMER_CTRL:
162     if (writeflag == MEM_WRITE) {
163     if (idata & ENTC0) {
164     /* TODO: Don't hardcode this. */
165     d->interrupt_hz = 100;
166     if (d->timer == NULL)
167     d->timer = timer_add(d->interrupt_hz,
168     timer_tick, d);
169     else
170     timer_update_frequency(d->timer,
171     d->interrupt_hz);
172     }
173     }
174     break;
175    
176 dpavlin 28 case GT_PCI0_CFG_ADDR:
177 dpavlin 22 if (cpu->byte_order != EMUL_LITTLE_ENDIAN) {
178     fatal("[ gt: TODO: big endian PCI access ]\n");
179     exit(1);
180     }
181     bus_pci_decompose_1(idata, &bus, &dev, &func, &reg);
182     bus_pci_setaddr(cpu, d->pci_data, bus, dev, func, reg);
183     break;
184    
185 dpavlin 28 case GT_PCI0_CFG_DATA:
186 dpavlin 22 if (cpu->byte_order != EMUL_LITTLE_ENDIAN) {
187     fatal("[ gt: TODO: big endian PCI access ]\n");
188     exit(1);
189 dpavlin 4 }
190 dpavlin 22 bus_pci_data_access(cpu, d->pci_data, writeflag == MEM_READ?
191     &odata : &idata, len, writeflag);
192 dpavlin 4 break;
193 dpavlin 22
194 dpavlin 4 default:
195 dpavlin 20 if (writeflag == MEM_READ) {
196 dpavlin 12 debug("[ gt: read from addr 0x%x ]\n",
197 dpavlin 4 (int)relative_addr);
198     } else {
199 dpavlin 12 debug("[ gt: write to addr 0x%x:", (int)relative_addr);
200 dpavlin 4 for (i=0; i<len; i++)
201     debug(" %02x", data[i]);
202     debug(" ]\n");
203     }
204     }
205    
206     if (writeflag == MEM_READ)
207     memory_writemax64(cpu, data, len, odata);
208    
209     return 1;
210     }
211    
212    
213     /*
214     * dev_gt_init():
215     *
216 dpavlin 30 * Initialize a Gallileo PCI controller device. First, the controller itself
217     * is added to the bus, then a pointer to the bus is returned.
218 dpavlin 4 */
219     struct pci_data *dev_gt_init(struct machine *machine, struct memory *mem,
220 dpavlin 34 uint64_t baseaddr, char *timer_irq_path, char *isa_irq_path, int type)
221 dpavlin 4 {
222     struct gt_data *d;
223 dpavlin 20 uint64_t pci_portbase = 0, pci_membase = 0;
224     uint64_t isa_portbase = 0, isa_membase = 0;
225     uint64_t pci_io_offset = 0, pci_mem_offset = 0;
226 dpavlin 22 char *gt_name = "NO";
227 dpavlin 4
228 dpavlin 42 CHECK_ALLOCATION(d = malloc(sizeof(struct gt_data)));
229 dpavlin 4 memset(d, 0, sizeof(struct gt_data));
230    
231 dpavlin 34 INTERRUPT_CONNECT(timer_irq_path, d->timer0_irq);
232    
233 dpavlin 10 switch (type) {
234     case 11:
235 dpavlin 20 /* Cobalt: */
236 dpavlin 10 d->type = PCI_PRODUCT_GALILEO_GT64011;
237 dpavlin 22 gt_name = "gt64011";
238 dpavlin 20 pci_io_offset = 0;
239     pci_mem_offset = 0;
240     pci_portbase = 0x10000000ULL;
241     pci_membase = 0x10100000ULL;
242     isa_portbase = 0x10000000ULL;
243     isa_membase = 0x10100000ULL;
244 dpavlin 10 break;
245     case 120:
246 dpavlin 20 /* EVBMIPS (Malta): */
247 dpavlin 10 d->type = PCI_PRODUCT_GALILEO_GT64120;
248 dpavlin 22 gt_name = "gt64120";
249 dpavlin 20 pci_io_offset = 0;
250     pci_mem_offset = 0;
251     pci_portbase = 0x18000000ULL;
252     pci_membase = 0x10000000ULL;
253     isa_portbase = 0x18000000ULL;
254     isa_membase = 0x10000000ULL;
255 dpavlin 10 break;
256 dpavlin 22 case 260:
257     /* MVMEPPC (mvme5500): */
258     d->type = PCI_PRODUCT_GALILEO_GT64260;
259     gt_name = "gt64260";
260     pci_io_offset = 0;
261     pci_mem_offset = 0;
262     pci_portbase = 0x18000000ULL;
263     pci_membase = 0x10000000ULL;
264     isa_portbase = 0x18000000ULL;
265     isa_membase = 0x10000000ULL;
266     break;
267     default:fatal("dev_gt_init(): unimplemented GT type (%i).\n", type);
268 dpavlin 10 exit(1);
269     }
270    
271 dpavlin 30
272     /*
273     * TODO: FIX THESE! Hardcoded numbers = bad.
274     */
275     d->decode[GT_PCI0IOLD_OFS / 8] = pci_portbase >> 21;
276     d->decode[GT_PCI0IOHD_OFS / 8] = 0x40;
277     d->decode[GT_PCI0M0LD_OFS / 8] = 0x80;
278     d->decode[GT_PCI0M0HD_OFS / 8] = 0x3f;
279     d->decode[GT_PCI0M1LD_OFS / 8] = 0xc1;
280     d->decode[GT_PCI0M1HD_OFS / 8] = 0x5e;
281     d->decode[GT_PCI0IOREMAP_OFS / 8] = d->decode[GT_PCI0IOLD_OFS / 8];
282     d->decode[GT_PCI0M0REMAP_OFS / 8] = d->decode[GT_PCI0M0LD_OFS / 8];
283     d->decode[GT_PCI0M1REMAP_OFS / 8] = d->decode[GT_PCI0M1LD_OFS / 8];
284    
285 dpavlin 22 d->pci_data = bus_pci_init(machine,
286 dpavlin 40 "TODO_gt_irq", pci_io_offset, pci_mem_offset,
287     pci_portbase, pci_membase, "TODO_pci_irqbase",
288 dpavlin 34 isa_portbase, isa_membase, isa_irq_path);
289 dpavlin 20
290 dpavlin 4 /*
291     * According to NetBSD/cobalt:
292     * pchb0 at pci0 dev 0 function 0: Galileo GT-64011
293     * System Controller, rev 1
294     */
295 dpavlin 22 bus_pci_add(machine, d->pci_data, mem, 0, 0, 0, gt_name);
296 dpavlin 4
297     memory_device_register(mem, "gt", baseaddr, DEV_GT_LENGTH,
298 dpavlin 20 dev_gt_access, d, DM_DEFAULT, NULL);
299 dpavlin 42 machine_add_tickfunction(machine, dev_gt_tick, d, TICK_SHIFT);
300 dpavlin 4
301     return d->pci_data;
302     }
303    

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