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

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Revision 20 - (hide annotations)
Mon Oct 8 16:19:23 2007 UTC (16 years, 5 months ago) by dpavlin
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File size: 6581 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1055 2005/11/25 22:48:36 debug Exp $
20051031	Adding disassembly support for more ARM instructions (clz,
		smul* etc), and adding a hack to support "new tiny" pages
		for StrongARM.
20051101	Minor documentation updates (NetBSD 2.0.2 -> 2.1, and OpenBSD
		3.7 -> 3.8, and lots of testing).
		Changing from 1-sector PIO mode 0 transfers to 128-sector PIO
		mode 3 (in dev_wdc).
		Various minor ARM dyntrans updates (pc-relative loads from
		within the same page as the instruction are now treated as
		constant "mov").
20051102	Re-enabling instruction combinations (they were accidentally
		disabled).
		Dyntrans TLB entries are now overwritten using a round-robin
		scheme instead of randomly. This increases performance.
		Fixing a typo in file.c (thanks to Chuan-Hua Chang for
		noticing it).
		Experimenting with adding ATAPI support to dev_wdc (to make
		emulated *BSD detect cdroms as cdroms, not harddisks).
20051104	Various minor updates.
20051105	Continuing on the ATAPI emulation. Seems to work well enough
		for a NetBSD/cats installation, but not OpenBSD/cats.
		Various other updates.
20051106	Modifying the -Y command line option to allow scaleup with
		certain graphic controllers (only dev_vga so far), not just
		scaledown.
		Some minor dyntrans cleanups.
20051107	Beginning a cleanup up the PCI subsystem (removing the
		read_register hack, etc).
20051108	Continuing the cleanup; splitting up some pci devices into a
		normal autodev device and some separate pci glue code.
20051109	Continuing on the PCI bus stuff; all old pci_*.c have been
		incorporated into normal devices and/or rewritten as glue code
		only, adding a dummy Intel 82371AB PIIX4 for Malta (not really
		tested yet).
		Minor pckbc fix so that Linux doesn't complain.
		Working on the DEC 21143 NIC (ethernet mac rom stuff mostly).
		Various other minor fixes.
20051110	Some more ARM dyntrans fine-tuning (e.g. some instruction
		combinations (cmps followed by conditional branch within the
		same page) and special cases for DPIs with regform when the
		shifter isn't used).
20051111	ARM dyntrans updates: O(n)->O(1) for just-mark-as-non-
		writable in the generic pc_to_pointers function, and some other
		minor hacks.
		Merging Cobalt and evbmips (Malta) ISA interrupt handling,
		and some minor fixes to allow Linux to accept harddisk irqs.
20051112	Minor device updates (pckbc, dec21143, lpt, ...), most
		importantly fixing the ALI M1543/M5229 so that harddisk irqs
		work with Linux/CATS.
20051113	Some more generalizations of the PCI subsystem.
		Finally took the time to add a hack for SCSI CDROM TOCs; this
		enables OpenBSD to use partition 'a' (as needed by the OpenBSD
		installer), and Windows NT's installer to get a bit further.
		Also fixing dev_wdc to allow Linux to detect ATAPI CDROMs.
		Continuing on the DEC 21143.
20051114	Minor ARM dyntrans tweaks; ARM cmps+branch optimization when
		comparing with 0, and generalizing the xchg instr. comb.
		Adding disassembly of ARM mrrc/mcrr and q{,d}{add,sub}.
20051115	Continuing on various PPC things (BATs, other address trans-
		lation things, various loads/stores, BeBox emulation, etc.).
		Beginning to work on PPC interrupt/exception support.
20051116	Factoring out some code which initializes legacy ISA devices
		from those machines that use them (bus_isa).
		Continuing on PPC interrupt/exception support.
20051117	Minor Malta fixes: RTC year offset = 80, disabling a speed hack
		which caused NetBSD to detect a too fast cpu, and adding a new
		hack to make Linux detect a faster cpu.
		Continuing on the Artesyn PM/PPC emulation mode.
		Adding an Algor emulation skeleton (P4032 and P5064);
		implementing some of the basics.
		Continuing on PPC emulation in general; usage of unimplemented
		SPRs is now easier to track, continuing on memory/exception
		related issues, etc.
20051118	More work on PPC emulation (tgpr0..3, exception handling,
		memory stuff, syscalls, etc.).
20051119	Changing the ARM dyntrans code to mostly use cpu->pc, and not
		necessarily use arm reg 15. Seems to work.
		Various PPC updates; continuing on the PReP emulation mode.
20051120	Adding a workaround/hack to dev_mc146818 to allow NetBSD/prep
		to detect the clock.
20051121	More cleanup of the PCI bus (memory and I/O bases, etc).
		Continuing on various PPC things (decrementer and timebase,
		WDCs on obio (on PReP) use irq 13, not 14/15).
20051122	Continuing on the CPC700 controller (interrupts etc) for PMPPC,
		and on PPC stuff in general.
		Finally! After some bug fixes to the virtual to physical addr
		translation, NetBSD/{prep,pmppc} 2.1 reach userland and are
		stable enough to be interacted with.
		More PCI updates; reverse-endian device access for PowerPC etc.
20051123	Generalizing the IEEE floating point subsystem (moving it out
		from src/cpus/cpu_mips_coproc.c into a new src/float_emul.c).
		Input via slave xterms was sometimes not really working; fixing
		this for ns16550, and a warning message is now displayed if
		multiple non-xterm consoles are active.
		Adding some PPC floating point support, etc.
		Various interrupt related updates (dev_wdc, _ns16550, _8259,
		and the isa32 common code in machine.c).
		NetBSD/prep can now be installed! :-) (Well, with some manual
		commands necessary before running sysinst.) Updating the
		documentation and various other things to reflect this.
20051124	Various minor documentation updates.
		Continuing the work on the DEC 21143 NIC.
20051125	LOTS of work on the 21143. Both OpenBSD and NetBSD work fine
		with it now, except that OpenBSD sometimes gives a time-out
		warning.
		Minor documentation updates.

==============  RELEASE 0.3.7  ==============


1 dpavlin 4 /*
2     * Copyright (C) 2003-2005 Anders Gavare. All rights reserved.
3     *
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 20 * $Id: dev_gt.c,v 1.35 2005/11/21 09:17:26 debug Exp $
29 dpavlin 4 *
30 dpavlin 10 * 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     *
35 dpavlin 12 * TODO: This more or less just a dummy device, so far. It happens to work
36     * with NetBSD/cobalt and /evbmips, and in some cases it might happen
37     * to work with Linux as well, but don't rely on it for anything else.
38 dpavlin 4 */
39    
40     #include <stdio.h>
41     #include <stdlib.h>
42     #include <string.h>
43    
44     #include "bus_pci.h"
45     #include "cpu.h"
46     #include "devices.h"
47     #include "machine.h"
48     #include "memory.h"
49     #include "misc.h"
50    
51    
52 dpavlin 12 #define TICK_SHIFT 14
53 dpavlin 4
54 dpavlin 12 /* #define debug fatal */
55    
56 dpavlin 20 #define PCI_PRODUCT_GALILEO_GT64011 0x4146 /* GT-64011 */
57     #define PCI_PRODUCT_GALILEO_GT64120 0x4620 /* GT-64120 */
58 dpavlin 4
59     struct gt_data {
60     int irqnr;
61     int pciirq;
62 dpavlin 10 int type;
63 dpavlin 4
64     struct pci_data *pci_data;
65     };
66    
67    
68     /*
69     * dev_gt_tick():
70     */
71     void dev_gt_tick(struct cpu *cpu, void *extra)
72     {
73     struct gt_data *gt_data = extra;
74    
75     cpu_interrupt(cpu, gt_data->irqnr);
76     }
77    
78    
79     /*
80     * dev_gt_access():
81     */
82     int dev_gt_access(struct cpu *cpu, struct memory *mem, uint64_t relative_addr,
83     unsigned char *data, size_t len, int writeflag, void *extra)
84     {
85     uint64_t idata = 0, odata = 0;
86 dpavlin 20 int i;
87 dpavlin 4 struct gt_data *d = extra;
88    
89 dpavlin 18 if (writeflag == MEM_WRITE)
90     idata = memory_readmax64(cpu, data, len);
91 dpavlin 4
92     switch (relative_addr) {
93 dpavlin 12
94     case 0x48:
95     switch (d->type) {
96     case PCI_PRODUCT_GALILEO_GT64120:
97     /*
98     * This is needed for Linux on Malta, according
99     * to Alec Voropay. (TODO: Remove this hack when
100     * things have stabilized.)
101     */
102     if (writeflag == MEM_READ) {
103     odata = 0x18000000 >> 21;
104     debug("[ gt: read from 0x48: 0x%08x ]\n",
105     (int)odata);
106     }
107     break;
108     default:
109     fatal("[ gt: access to 0x48? (type %i) ]\n", d->type);
110     }
111     break;
112    
113 dpavlin 4 case 0xc18:
114     if (writeflag == MEM_WRITE) {
115 dpavlin 12 debug("[ gt: write to 0xc18: 0x%08x ]\n", (int)idata);
116 dpavlin 4 return 1;
117     } else {
118     odata = 0xffffffffULL;
119 dpavlin 20 /*
120     * ??? interrupt something...
121     *
122     * TODO: Remove this hack when things have stabilized.
123     */
124     odata = 0x00000100;
125     /* netbsd/cobalt cobalt/machdep.c:cpu_intr() */
126 dpavlin 4
127 dpavlin 20 cpu_interrupt_ack(cpu, d->irqnr);
128 dpavlin 4
129 dpavlin 12 debug("[ gt: read from 0xc18 (0x%08x) ]\n", (int)odata);
130 dpavlin 4 }
131     break;
132 dpavlin 12
133     case 0xc34: /* GT_PCI0_INTR_ACK */
134 dpavlin 20 odata = cpu->machine->isa_pic_data.last_int;
135     cpu_interrupt_ack(cpu, 8 + odata);
136 dpavlin 12 break;
137    
138 dpavlin 4 case 0xcf8: /* PCI ADDR */
139     case 0xcfc: /* PCI DATA */
140     if (writeflag == MEM_WRITE) {
141     bus_pci_access(cpu, mem, relative_addr, &idata,
142 dpavlin 20 len, writeflag, d->pci_data);
143 dpavlin 4 } else {
144     bus_pci_access(cpu, mem, relative_addr, &odata,
145 dpavlin 20 len, writeflag, d->pci_data);
146 dpavlin 4 }
147     break;
148     default:
149 dpavlin 20 if (writeflag == MEM_READ) {
150 dpavlin 12 debug("[ gt: read from addr 0x%x ]\n",
151 dpavlin 4 (int)relative_addr);
152     } else {
153 dpavlin 12 debug("[ gt: write to addr 0x%x:", (int)relative_addr);
154 dpavlin 4 for (i=0; i<len; i++)
155     debug(" %02x", data[i]);
156     debug(" ]\n");
157     }
158     }
159    
160     if (writeflag == MEM_READ)
161     memory_writemax64(cpu, data, len, odata);
162    
163     return 1;
164     }
165    
166    
167     /*
168     * dev_gt_init():
169     *
170     * Initialize a GT device. Return a pointer to the pci_data used, so that
171     * the caller may add PCI devices. First, however, we add the GT device
172     * itself.
173     */
174     struct pci_data *dev_gt_init(struct machine *machine, struct memory *mem,
175 dpavlin 10 uint64_t baseaddr, int irq_nr, int pciirq, int type)
176 dpavlin 4 {
177     struct gt_data *d;
178 dpavlin 20 uint64_t pci_portbase = 0, pci_membase = 0;
179     uint64_t isa_portbase = 0, isa_membase = 0;
180     int isa_irqbase = 0, pci_irqbase = 0;
181     uint64_t pci_io_offset = 0, pci_mem_offset = 0;
182 dpavlin 4
183     d = malloc(sizeof(struct gt_data));
184     if (d == NULL) {
185     fprintf(stderr, "out of memory\n");
186     exit(1);
187     }
188     memset(d, 0, sizeof(struct gt_data));
189     d->irqnr = irq_nr;
190     d->pciirq = pciirq;
191    
192 dpavlin 10 switch (type) {
193     case 11:
194 dpavlin 20 /* Cobalt: */
195 dpavlin 10 d->type = PCI_PRODUCT_GALILEO_GT64011;
196 dpavlin 20 pci_io_offset = 0;
197     pci_mem_offset = 0;
198     pci_portbase = 0x10000000ULL;
199     pci_membase = 0x10100000ULL;
200     pci_irqbase = 0;
201     isa_portbase = 0x10000000ULL;
202     isa_membase = 0x10100000ULL;
203     isa_irqbase = 8;
204 dpavlin 10 break;
205     case 120:
206 dpavlin 20 /* EVBMIPS (Malta): */
207 dpavlin 10 d->type = PCI_PRODUCT_GALILEO_GT64120;
208 dpavlin 20 pci_io_offset = 0;
209     pci_mem_offset = 0;
210     pci_portbase = 0x18000000ULL;
211     pci_membase = 0x10000000ULL;
212     pci_irqbase = 8;
213     isa_portbase = 0x18000000ULL;
214     isa_membase = 0x10000000ULL;
215     isa_irqbase = 8;
216 dpavlin 10 break;
217     default:fatal("dev_gt_init(): type must be 11 or 120.\n");
218     exit(1);
219     }
220    
221 dpavlin 20 d->pci_data = bus_pci_init(
222     pciirq, pci_io_offset, pci_mem_offset,
223     pci_portbase, pci_membase, pci_irqbase,
224     isa_portbase, isa_membase, isa_irqbase);
225    
226 dpavlin 4 /*
227     * According to NetBSD/cobalt:
228     * pchb0 at pci0 dev 0 function 0: Galileo GT-64011
229     * System Controller, rev 1
230     */
231 dpavlin 20 bus_pci_add(machine, d->pci_data, mem, 0, 0, 0,
232     d->type == PCI_PRODUCT_GALILEO_GT64011? "gt64011" : "gt64120");
233 dpavlin 4
234     memory_device_register(mem, "gt", baseaddr, DEV_GT_LENGTH,
235 dpavlin 20 dev_gt_access, d, DM_DEFAULT, NULL);
236 dpavlin 12 machine_add_tickfunction(machine, dev_gt_tick, d, TICK_SHIFT);
237 dpavlin 4
238     return d->pci_data;
239     }
240    

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