source: sbliveos2/trunk/lib32/pci.c@ 145

Last change on this file since 145 was 142, checked in by ktk, 25 years ago

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1/* $Id: pci.c 142 2000-04-23 14:55:46Z ktk $ */
2
3//******************************************************************************
4// OS/2 IDC services (callback to 16 bits MMPM2 driver)
5//
6// Copyright 2000 Sander van Leeuwen (sandervl@xs4all.nl)
7//
8// Parts based on Linux kernel code (pci_read/write_*)
9//
10// This program is free software; you can redistribute it and/or
11// modify it under the terms of the GNU General Public License as
12// published by the Free Software Foundation; either version 2 of
13// the License, or (at your option) any later version.
14//
15// This program is distributed in the hope that it will be useful,
16// but WITHOUT ANY WARRANTY; without even the implied warranty of
17// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18// GNU General Public License for more details.
19//
20// You should have received a copy of the GNU General Public
21// License along with this program; if not, write to the Free
22// Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
23// USA.
24//
25//******************************************************************************
26#include "hwaccess.h"
27#include <linux/init.h>
28#include <linux/poll.h>
29#include <asm/uaccess.h>
30#include <asm/hardirq.h>
31
32#define LINUX
33#include <ossidc.h>
34#include <stacktoflat.h>
35
36#define MAX_PCI_DEVICES 16
37#define MAX_PCI_BUSSES 2
38
39static struct pci_dev pci_devices[MAX_PCI_DEVICES] = {0};
40static struct pci_bus pci_busses[MAX_PCI_BUSSES] = {0};
41
42//******************************************************************************
43//******************************************************************************
44int pcidev_prepare(struct pci_dev *dev)
45{
46 return 1; //todo: correct return value??
47}
48//******************************************************************************
49//******************************************************************************
50int pcidev_activate(struct pci_dev *dev)
51{
52 return 1; //todo: correct return value??
53}
54//******************************************************************************
55//******************************************************************************
56int pcidev_deactivate(struct pci_dev *dev)
57{
58 return 1; //todo: correct return value??
59}
60//******************************************************************************
61//TODO: Doesn't completely fill in the pci_dev structure
62//******************************************************************************
63int FindPCIDevice(unsigned int vendor, unsigned int device, struct pci_dev near *pcidev)
64{
65 IDC_RESOURCE idcres;
66 ULONG devid, pResource;
67 int i, residx = 0;
68
69 pcidev->prepare = pcidev_prepare;
70 pcidev->activate = pcidev_activate;
71 pcidev->deactivate = pcidev_deactivate;
72 pcidev->active = 1;
73 pcidev->ro = 0;
74 pcidev->sibling = NULL;
75 pcidev->next = NULL;
76 pcidev->vendor = vendor;
77 pcidev->device = device;
78
79 devid = (vendor << 16) | device;
80
81#ifdef KEE
82 pResource = __FlatToStack(&idcres);
83#else
84 pResource = __Compress48Pointer((char FAR48 *)&idcres);
85#endif
86 if(CallOSS16(IDC16_FIND_PCIDEVICE, devid, pResource) == FALSE) {
87 return FALSE;
88 }
89
90 for(i=0;i<MAX_RES_IO;i++) {
91 if(idcres.io[i] != 0xffff) {
92 pcidev->resource[residx].name = 0;
93 pcidev->resource[residx].child = 0;
94 pcidev->resource[residx].sibling = 0;
95 pcidev->resource[residx].parent = 0;
96 pcidev->resource[residx].start = idcres.io[i];
97 pcidev->resource[residx].end = idcres.io[i] + idcres.iolength[i]; //inclusive??
98 pcidev->resource[residx].flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
99
100 residx++;
101 }
102 }
103 for(i=0;i<MAX_RES_MEM;i++) {
104 if(idcres.mem[i] != 0xffffffff) {
105 pcidev->resource[residx].name = 0;
106 pcidev->resource[residx].child = 0;
107 pcidev->resource[residx].sibling = 0;
108 pcidev->resource[residx].parent = 0;
109 pcidev->resource[residx].start = idcres.mem[i];
110 pcidev->resource[residx].end = idcres.mem[i] + idcres.memlength[i]; //inclusive??
111 pcidev->resource[residx].flags = IORESOURCE_MEM | IORESOURCE_MEM_WRITEABLE;
112
113 residx++;
114 }
115 }
116 for(i=0;i<MAX_RES_DMA;i++) {
117 if(idcres.dma[i] != 0xffff) {
118 pcidev->dma_resource[i].name = 0;
119 pcidev->dma_resource[i].child = 0;
120 pcidev->dma_resource[i].sibling = 0;
121 pcidev->dma_resource[i].parent = 0;
122 pcidev->dma_resource[i].start = idcres.dma[i];
123 pcidev->dma_resource[i].end = idcres.dma[i];
124 //todo: 8/16 bits
125 pcidev->dma_resource[i].flags = IORESOURCE_DMA;
126 }
127 }
128 for(i=0;i<MAX_RES_IRQ;i++) {
129 if(idcres.irq[i] != 0xffff) {
130 pcidev->irq_resource[i].name = 0;
131 pcidev->irq_resource[i].child = 0;
132 pcidev->irq_resource[i].sibling = 0;
133 pcidev->irq_resource[i].parent = 0;
134 pcidev->irq_resource[i].start = idcres.irq[i];
135 pcidev->irq_resource[i].end = idcres.irq[i];
136 //todo: irq flags
137 pcidev->irq_resource[9].flags = IORESOURCE_IRQ;
138 }
139 }
140 pcidev->irq = pcidev->irq_resource[0].start;
141 pcidev->bus = &pci_busses[0];
142 return TRUE;
143}
144//******************************************************************************
145//******************************************************************************
146struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, struct pci_dev *from)
147{
148 int i;
149
150 if(from) {
151 //requesting 2nd device of the same type; don't support this for now
152 return 0;
153 }
154 for(i=0;i<MAX_PCI_DEVICES;i++) {
155 if(pci_devices[i].devfn == 0) {
156 if(FindPCIDevice(vendor, device, (struct pci_dev near *)&pci_devices[i]) == TRUE) {
157 return &pci_devices[i];
158 }
159 break;
160 }
161 }
162 return 0;
163}
164//******************************************************************************
165#define CONFIG_CMD(dev, where) (0x80000000 | (dev->bus->number << 16) | (dev->devfn << 8) | (where & ~3))
166//******************************************************************************
167int pci_read_config_byte(struct pci_dev *dev, int where, u8 *value)
168{
169 outl(CONFIG_CMD(dev,where), 0xCF8);
170 *value = inb(0xCFC + (where&3));
171 return PCIBIOS_SUCCESSFUL;
172}
173//******************************************************************************
174//******************************************************************************
175int pci_read_config_word(struct pci_dev *dev, int where, u16 *value)
176{
177 outl(CONFIG_CMD(dev,where), 0xCF8);
178 *value = inw(0xCFC + (where&2));
179 return PCIBIOS_SUCCESSFUL;
180}
181//******************************************************************************
182//******************************************************************************
183int pci_read_config_dword(struct pci_dev *dev, int where, u32 *value)
184{
185 outl(CONFIG_CMD(dev,where), 0xCF8);
186 *value = inl(0xCFC);
187 return PCIBIOS_SUCCESSFUL;
188}
189//******************************************************************************
190//******************************************************************************
191int pci_write_config_byte(struct pci_dev *dev, int where, u8 value)
192{
193 outl(CONFIG_CMD(dev,where), 0xCF8);
194 outb(value, 0xCFC + (where&3));
195 return PCIBIOS_SUCCESSFUL;
196}
197//******************************************************************************
198//******************************************************************************
199int pci_write_config_word(struct pci_dev *dev, int where, u16 value)
200{
201 outl(CONFIG_CMD(dev,where), 0xCF8);
202 outw(value, 0xCFC + (where&2));
203 return PCIBIOS_SUCCESSFUL;
204}
205//******************************************************************************
206//******************************************************************************
207int pci_write_config_dword(struct pci_dev *dev, int where, u32 value)
208{
209 outl(CONFIG_CMD(dev,where), 0xCF8);
210 outl(value, 0xCFC);
211 return PCIBIOS_SUCCESSFUL;
212}
213//******************************************************************************
214//******************************************************************************
215int pcibios_present(void)
216{
217 return 1;
218}
219//******************************************************************************
220//******************************************************************************
221struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn)
222{
223 return NULL;
224}
225//******************************************************************************
226//******************************************************************************
227int pci_dma_supported(struct pci_dev *dev, unsigned long mask)
228{
229 return 1;
230}
231//******************************************************************************
232//******************************************************************************
233int pci_enable_device(struct pci_dev *dev)
234{
235 return 0;
236}
237//******************************************************************************
238struct pci_dev *sblivepcidev = NULL;
239//******************************************************************************
240int pci_register_driver(struct pci_driver *driver)
241{
242 struct pci_dev *pcidev;
243
244 pcidev = pci_find_device(driver->id_table->vendor, driver->id_table->device, NULL);
245 if(pcidev) {
246 if(driver->probe(pcidev, driver->id_table) == 0) {
247 sblivepcidev = pcidev;
248 return 0;
249 }
250 }
251 return 1;
252}
253//******************************************************************************
254//******************************************************************************
255int pci_unregister_driver(struct pci_driver *driver)
256{
257 if(driver && sblivepcidev) {
258 driver->remove(sblivepcidev);
259 }
260 return 0;
261}
262//******************************************************************************
263//******************************************************************************
264void pci_set_master(struct pci_dev *dev)
265{
266
267}
268//******************************************************************************
269//******************************************************************************
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