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source: trunk/src/os2ahci/pci.c@ 177

Last change on this file since 177 was 176, checked in by David Azarewicz, 9 years ago
Documentation and makefile changes for Arca Noae packaging. No code changes.
File size: 43.4 KB

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1	/******************************************************************************
2	* PCI.c - PCI constants and detection code for os2ahci driver
3	*
4	* Copyright (c) 2011 thi.guten Software Development
5	* Copyright (c) 2011 Mensys B.V.
6	* Copyright (c) 2013-2015 David Azarewicz
7	*
8	* Authors: Christian Mueller, Markus Thielen
9	*
10	* Parts copied from/inspired by the Linux AHCI driver;
11	* those parts are (c) Linux AHCI/ATA maintainers
12	*
13	* This program is free software; you can redistribute it and/or modify
14	* it under the terms of the GNU General Public License as published by
15	* the Free Software Foundation; either version 2 of the License, or
16	* (at your option) any later version.
17	*
18	* This program is distributed in the hope that it will be useful,
19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21	* GNU General Public License for more details.
22	*
23	* You should have received a copy of the GNU General Public License
24	* along with this program; if not, write to the Free Software
25	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26	*/
27
28	#include "os2ahci.h"
29
30	/* -------------------------- macros and constants ------------------------- */
31
32	/* offset of PCI base address register (BAR) in the PCI config space */
33	#define PCI_BAR(reg) (UCHAR) (0x10 + (reg) * sizeof(u32))
34
35	/******************************************************************************
36	* OEMHLP constants for PCI access
37	*/
38	#define GENERIC_IOCTL 0x10
39	#define OH_CATEGORY 0x00
40	#define OH_FUNC_PCI 0x0b
41
42	/* subfunctions */
43	#define OH_BIOS_INFO 0x00
44	#define OH_FIND_DEVICE 0x01
45	#define OH_FIND_CLASS 0x02
46	#define OH_READ_CONFIG 0x03
47	#define OH_WRITE_CONFIG 0x04
48
49	/* return codes */
50	#define OH_SUCCESS 0x00
51	#define OH_NOT_SUPPORTED 0x81
52	#define OH_BAD_VENDOR 0x83
53	#define OH_NOT_FOUND 0x86
54	#define OH_BAD_REGISTER 0x87
55
56	/* ------------------------ typedefs and structures ------------------------ */
57
58	/******************************************************************************
59	* OEMHLP IOCtl parameter union. The parameter area is generally used as input
60	* to the OEMHLP IOCtl calls.
61	*/
62	typedef union {
63
64	/* query PCI BIOS information" */
65	struct {
66	UCHAR subfunction;
67	} bios_info;
68
69	/* find PCI device */
70	struct {
71	UCHAR subfunction;
72	USHORT device;
73	USHORT vendor;
74	UCHAR index;
75	} find_device;
76
77	/* find PCI class code */
78	struct {
79	UCHAR subfunction;
80	ULONG class;
81	UCHAR index;
82	} find_class;
83
84	/* read PCI configuration space */
85	struct {
86	UCHAR subfunction;
87	UCHAR bus;
88	UCHAR dev_func;
89	UCHAR reg;
90	UCHAR size;
91	} read_config;
92
93	/* write PCI configuration space */
94	struct {
95	UCHAR subfunction;
96	UCHAR bus;
97	UCHAR dev_func;
98	UCHAR reg;
99	UCHAR size;
100	ULONG data;
101	} write_config;
102
103	} OH_PARM;
104
105	/******************************************************************************
106	* OEMHLP IOCtl data union. The data area is generally used as output from the
107	* OEMHLP IOCtl calls.
108	*/
109	typedef union {
110
111	/* query PCI BIOS information" */
112	struct {
113	UCHAR rc;
114	UCHAR hw_mech;
115	UCHAR major_version;
116	UCHAR minor_version;
117	UCHAR last_bus;
118	} bios_info;
119
120	/* find PCI device */
121	struct {
122	UCHAR rc;
123	UCHAR bus;
124	UCHAR dev_func;
125	} find_device;
126
127	/* find PCI class code */
128	struct {
129	UCHAR rc;
130	UCHAR bus;
131	UCHAR dev_func;
132	} find_class;
133
134	/* read PCI confguration space */
135	struct {
136	UCHAR rc;
137	ULONG data;
138	} read_config;
139
140	/* write PCI confguration space */
141	struct {
142	UCHAR rc;
143	} write_config;
144
145	} OH_DATA;
146
147	/* -------------------------- function prototypes -------------------------- */
148
149	static void add_pci_device (PCI_ID pci_id, OH_DATA _far data);
150	static int oemhlp_call (UCHAR subfunction, OH_PARM _far *parm,
151	OH_DATA _far *data);
152	static long bar_resource (UCHAR bus, UCHAR dev_func,
153	RESOURCESTRUCT _far *resource, int i);
154	static char *rmerr (APIRET ret);
155
156	/* ------------------------ global/static variables ------------------------ */
157
158	/******************************************************************************
159	* chipset/controller name strings
160	*/
161	static char chip_esb2[] = "ESB2";
162	static char chip_ich8[] = "ICH8";
163	static char chip_ich8m[] = "ICH8M";
164	static char chip_ich9[] = "ICH9";
165	static char chip_ich9m[] = "ICH9M";
166	static char chip_ich10[] = "ICH10";
167	static char chip_pchahci[] = "PCH AHCI";
168	static char chip_pchraid[] = "PCH RAID";
169	static char chip_tolapai[] = "Tolapai";
170	static char chip_sb600[] = "SB600";
171	static char chip_sb700[] = "SB700/800";
172	static char chip_vt8251[] = "VT8251";
173	static char chip_mcp65[] = "MCP65";
174	static char chip_mcp67[] = "MCP67";
175	static char chip_mcp73[] = "MCP73";
176	static char chip_mcp77[] = "MCP77";
177	static char chip_mcp79[] = "MCP79";
178	static char chip_mcp89[] = "MCP689";
179	static char chip_sis968[] = "968";
180
181	static char s_generic[] = "Generic";
182
183
184
185	/******************************************************************************
186	* PCI vendor and device IDs for known AHCI adapters. Copied from the Linux
187	* AHCI driver.
188	*/
189
190	PCI_ID pci_ids[] = {
191
192	/* Intel
193	* NOTE: ICH5 controller does NOT support AHCI, so we do
194	* not add it here! */
195	{ PCI_VDEVICE(INTEL, 0x2652), board_ahci, "ICH6" }, /* ICH6 */
196	{ PCI_VDEVICE(INTEL, 0x2653), board_ahci, "ICH6M" }, /* ICH6M */
197	{ PCI_VDEVICE(INTEL, 0x27c1), board_ahci, "ICH7" }, /* ICH7 */
198	{ PCI_VDEVICE(INTEL, 0x27c5), board_ahci, "ICH7M" }, /* ICH7M */
199	{ PCI_VDEVICE(INTEL, 0x27c3), board_ahci, "ICH7R" }, /* ICH7R */
200	{ PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr, "ULiM5288" }, /* ULi M5288 */
201	{ PCI_VDEVICE(INTEL, 0x2681), board_ahci, chip_esb2 }, /* ESB2 */
202	{ PCI_VDEVICE(INTEL, 0x2682), board_ahci, chip_esb2 }, /* ESB2 */
203	{ PCI_VDEVICE(INTEL, 0x2683), board_ahci, chip_esb2 }, /* ESB2 */
204	{ PCI_VDEVICE(INTEL, 0x27c6), board_ahci, "ICH7MDH" }, /* ICH7-M DH */
205	{ PCI_VDEVICE(INTEL, 0x2821), board_ahci, chip_ich8 }, /* ICH8 */
206	{ PCI_VDEVICE(INTEL, 0x2822), board_ahci_nosntf, chip_ich8 }, /* ICH8 */
207	{ PCI_VDEVICE(INTEL, 0x2824), board_ahci, chip_ich8 }, /* ICH8 */
208	{ PCI_VDEVICE(INTEL, 0x2829), board_ahci, chip_ich8m }, /* ICH8M */
209	{ PCI_VDEVICE(INTEL, 0x282a), board_ahci, chip_ich8m }, /* ICH8M */
210	{ PCI_VDEVICE(INTEL, 0x2922), board_ahci, chip_ich9 }, /* ICH9 */
211	{ PCI_VDEVICE(INTEL, 0x2923), board_ahci, chip_ich9 }, /* ICH9 */
212	{ PCI_VDEVICE(INTEL, 0x2924), board_ahci, chip_ich9 }, /* ICH9 */
213	{ PCI_VDEVICE(INTEL, 0x2925), board_ahci, chip_ich9 }, /* ICH9 */
214	{ PCI_VDEVICE(INTEL, 0x2927), board_ahci, chip_ich9 }, /* ICH9 */
215	{ PCI_VDEVICE(INTEL, 0x2929), board_ahci, chip_ich9m }, /* ICH9M */
216	{ PCI_VDEVICE(INTEL, 0x292a), board_ahci, chip_ich9m }, /* ICH9M */
217	{ PCI_VDEVICE(INTEL, 0x292b), board_ahci, chip_ich9m }, /* ICH9M */
218	{ PCI_VDEVICE(INTEL, 0x292c), board_ahci, chip_ich9m }, /* ICH9M */
219	{ PCI_VDEVICE(INTEL, 0x292f), board_ahci, chip_ich9m }, /* ICH9M */
220	{ PCI_VDEVICE(INTEL, 0x294d), board_ahci, chip_ich9 }, /* ICH9 */
221	{ PCI_VDEVICE(INTEL, 0x294e), board_ahci, chip_ich9m }, /* ICH9M */
222	{ PCI_VDEVICE(INTEL, 0x502a), board_ahci, chip_tolapai }, /* Tolapai */
223	{ PCI_VDEVICE(INTEL, 0x502b), board_ahci, chip_tolapai }, /* Tolapai */
224	{ PCI_VDEVICE(INTEL, 0x3a05), board_ahci, chip_ich10 }, /* ICH10 */
225	{ PCI_VDEVICE(INTEL, 0x3a22), board_ahci, chip_ich10 }, /* ICH10 */
226	{ PCI_VDEVICE(INTEL, 0x3a25), board_ahci, chip_ich10 }, /* ICH10 */
227	{ PCI_VDEVICE(INTEL, 0x3b22), board_ahci, chip_pchahci }, /* PCH AHCI */
228	{ PCI_VDEVICE(INTEL, 0x3b23), board_ahci, chip_pchahci }, /* PCH AHCI */
229	{ PCI_VDEVICE(INTEL, 0x3b24), board_ahci, chip_pchraid }, /* PCH RAID */
230	{ PCI_VDEVICE(INTEL, 0x3b25), board_ahci, chip_pchraid }, /* PCH RAID */
231	{ PCI_VDEVICE(INTEL, 0x3b29), board_ahci, chip_pchahci }, /* PCH AHCI */
232	{ PCI_VDEVICE(INTEL, 0x3b2b), board_ahci, chip_pchraid }, /* PCH RAID */
233	{ PCI_VDEVICE(INTEL, 0x3b2c), board_ahci, chip_pchraid }, /* PCH RAID */
234	{ PCI_VDEVICE(INTEL, 0x3b2f), board_ahci, chip_pchahci }, /* PCH AHCI */
235
236	/* JMicron 360/1/3/5/6, match class to avoid IDE function */
237	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
238	PCI_CLASS_STORAGE_SATA_AHCI, 0xffffffL, board_ahci_ign_iferr, "360" },
239
240	/* ATI */
241	{ PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600, chip_sb600 }, /* ATI SB600 */
242	{ PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700, chip_sb700 }, /* ATI SB700/800 */
243	{ PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700, chip_sb700 }, /* ATI SB700/800 */
244	{ PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700, chip_sb700 }, /* ATI SB700/800 */
245	{ PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700, chip_sb700 }, /* ATI SB700/800 */
246	{ PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700, chip_sb700 }, /* ATI SB700/800 */
247	{ PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700, chip_sb700 }, /* ATI SB700/800 */
248
249	/* AMD */
250	{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
251	/* AMD is using RAID class only for ahci controllers */
252	{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
253	PCI_CLASS_STORAGE_RAID << 8, 0xffffffL, board_ahci, "Hudson2" },
254
255	/* VIA */
256	{ PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251, chip_vt8251 }, /* VIA VT8251 */
257	{ PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251, chip_vt8251 }, /* VIA VT8251 */
258
259	/* NVIDIA */
260	{ PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
261	{ PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
262	{ PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
263	{ PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
264	{ PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
265	{ PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
266	{ PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
267	{ PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65, chip_mcp65 }, /* MCP65 */
268	{ PCI_VDEVICE(NVIDIA, 0x0550), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
269	{ PCI_VDEVICE(NVIDIA, 0x0551), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
270	{ PCI_VDEVICE(NVIDIA, 0x0552), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
271	{ PCI_VDEVICE(NVIDIA, 0x0553), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
272	{ PCI_VDEVICE(NVIDIA, 0x0554), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
273	{ PCI_VDEVICE(NVIDIA, 0x0555), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
274	{ PCI_VDEVICE(NVIDIA, 0x0556), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
275	{ PCI_VDEVICE(NVIDIA, 0x0557), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
276	{ PCI_VDEVICE(NVIDIA, 0x0558), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
277	{ PCI_VDEVICE(NVIDIA, 0x0559), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
278	{ PCI_VDEVICE(NVIDIA, 0x055a), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
279	{ PCI_VDEVICE(NVIDIA, 0x055b), board_ahci_yesncq, chip_mcp67 }, /* MCP67 */
280	{ PCI_VDEVICE(NVIDIA, 0x0580), board_ahci_yesncq, chip_mcp67 }, /* Linux ID */
281	{ PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
282	{ PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
283	{ PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
284	{ PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
285	{ PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
286	{ PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
287	{ PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
288	{ PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
289	{ PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
290	{ PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
291	{ PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
292	{ PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci_yesncq, chip_mcp73 }, /* MCP73 */
293	{ PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci, chip_mcp77 }, /* MCP77 */
294	{ PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci, chip_mcp77 }, /* MCP77 */
295	{ PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci, chip_mcp77 }, /* MCP77 */
296	{ PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci, chip_mcp77 }, /* MCP77 */
297	{ PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci, chip_mcp77 }, /* MCP77 */
298	{ PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci, chip_mcp77 }, /* MCP77 */
299	{ PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci, chip_mcp77 }, /* MCP77 */
300	{ PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci, chip_mcp77 }, /* MCP77 */
301	{ PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci, chip_mcp77 }, /* MCP77 */
302	{ PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci, chip_mcp77 }, /* MCP77 */
303	{ PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci, chip_mcp77 }, /* MCP77 */
304	{ PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci, chip_mcp77 }, /* MCP77 */
305	{ PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci, chip_mcp79 }, /* MCP79 */
306	{ PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci, chip_mcp79 }, /* MCP79 */
307	{ PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci, chip_mcp79 }, /* MCP79 */
308	{ PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci, chip_mcp79 }, /* MCP79 */
309	{ PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci, chip_mcp79 }, /* MCP79 */
310	{ PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci, chip_mcp79 }, /* MCP79 */
311	{ PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci, chip_mcp79 }, /* MCP79 */
312	{ PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci, chip_mcp79 }, /* MCP79 */
313	{ PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci, chip_mcp79 }, /* MCP79 */
314	{ PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci, chip_mcp79 }, /* MCP79 */
315	{ PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci, chip_mcp79 }, /* MCP79 */
316	{ PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci, chip_mcp79 }, /* MCP79 */
317	{ PCI_VDEVICE(NVIDIA, 0x0d84), board_ahci, chip_mcp89 }, /* MCP89 */
318	{ PCI_VDEVICE(NVIDIA, 0x0d85), board_ahci, chip_mcp89 }, /* MCP89 */
319	{ PCI_VDEVICE(NVIDIA, 0x0d86), board_ahci, chip_mcp89 }, /* MCP89 */
320	{ PCI_VDEVICE(NVIDIA, 0x0d87), board_ahci, chip_mcp89 }, /* MCP89 */
321	{ PCI_VDEVICE(NVIDIA, 0x0d88), board_ahci, chip_mcp89 }, /* MCP89 */
322	{ PCI_VDEVICE(NVIDIA, 0x0d89), board_ahci, chip_mcp89 }, /* MCP89 */
323	{ PCI_VDEVICE(NVIDIA, 0x0d8a), board_ahci, chip_mcp89 }, /* MCP89 */
324	{ PCI_VDEVICE(NVIDIA, 0x0d8b), board_ahci, chip_mcp89 }, /* MCP89 */
325	{ PCI_VDEVICE(NVIDIA, 0x0d8c), board_ahci, chip_mcp89 }, /* MCP89 */
326	{ PCI_VDEVICE(NVIDIA, 0x0d8d), board_ahci, chip_mcp89 }, /* MCP89 */
327	{ PCI_VDEVICE(NVIDIA, 0x0d8e), board_ahci, chip_mcp89 }, /* MCP89 */
328	{ PCI_VDEVICE(NVIDIA, 0x0d8f), board_ahci, chip_mcp89 }, /* MCP89 */
329
330	/* SiS */
331	{ PCI_VDEVICE(SI, 0x1184), board_ahci, "966" }, /* SiS 966 */
332	{ PCI_VDEVICE(SI, 0x1185), board_ahci, chip_sis968 }, /* SiS 968 */
333	{ PCI_VDEVICE(SI, 0x0186), board_ahci, chip_sis968 }, /* SiS 968 */
334
335	/* Marvell */
336	{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv, "6145" }, /* 6145 */
337	{ PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv, "6121" }, /* 6121 */
338
339	/* Promise */
340	{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci, "PDC42819" }, /* PDC42819 */
341
342	/* Generic, PCI class code for AHCI */
343	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
344	PCI_CLASS_STORAGE_SATA_AHCI, 0xffffffL, board_ahci, s_generic },
345
346	/* end of list, including a few slots to define custom adapters (10) */
347	{ 0, 0, 0, 0, 0, 0, 0, NULL },
348	{ 0, 0, 0, 0, 0, 0, 0, NULL },
349	{ 0, 0, 0, 0, 0, 0, 0, NULL },
350	{ 0, 0, 0, 0, 0, 0, 0, NULL },
351	{ 0, 0, 0, 0, 0, 0, 0, NULL },
352	{ 0, 0, 0, 0, 0, 0, 0, NULL },
353	{ 0, 0, 0, 0, 0, 0, 0, NULL },
354	{ 0, 0, 0, 0, 0, 0, 0, NULL },
355	{ 0, 0, 0, 0, 0, 0, 0, NULL },
356	{ 0, 0, 0, 0, 0, 0, 0, NULL },
357
358	{ 0, 0, 0, 0, 0, 0, 0, NULL }
359	};
360
361	/******************************************************************************
362	* OEMHLP$ is used by OS/2 to provide access to OEM-specific machine resources
363	* like PCI BIOS access. We're using this to enumerate the PCI bus. Due to
364	* BIOS bugs, it may be necessary to use I/O operations for this purpose but
365	* so far I think this is only relevant for rather old PCs and SATA is not
366	* expected to be a priority on those machines.
367	*/
368	static IDCTABLE oemhlp; /* OEMHLP$ IDC entry point */
369
370	/* ----------------------------- start of code ----------------------------- */
371
372	/******************************************************************************
373	* Add specified PCI vendor and device ID to the list of supported AHCI
374	* controllers. Please note that the last slot in pci_ids needs to remain
375	* empty because it's used as end marker.
376	*/
377	int add_pci_id(u16 vendor, u16 device)
378	{
379	int max_slot = sizeof(pci_ids) / sizeof(*pci_ids) - 2;
380	int i;
381
382	/* search for last used slot in 'pci_ids' */
383	for (i = max_slot; i >= 0 && pci_ids[i].vendor == 0; i--);
384	if (i >= max_slot) {
385	/* all slots in use */
386	return(-1);
387	}
388
389	/* use slot after the last used slot */
390	i++;
391	pci_ids[i].vendor = vendor;
392	pci_ids[i].device = device;
393	pci_ids[i].board = board_ahci;
394	pci_ids[i].chipname = s_generic;
395	return(0);
396	}
397
398	/******************************************************************************
399	* Scan PCI bus using OEMHLP$ IOCTLs and build adapter list.
400	*/
401	void scan_pci_bus(void)
402	{
403	OH_PARM parm;
404	OH_DATA data;
405	UCHAR index;
406	UCHAR rc;
407	int ad_indx = 0;
408	int i;
409	int n;
410
411	ddprintf("scanning PCI bus...\n");
412
413	/* verify that we have a PCI system */
414	memset(&parm, 0x00, sizeof(parm));
415	if (oemhlp_call(OH_BIOS_INFO, &parm, &data) != OH_SUCCESS) {
416	cprintf("%s: couldn't get PCI BIOS information\n", drv_name);
417	return;
418	}
419
420	/* Go through the list of PCI IDs and search for each device
421	*
422	* NOTES:
423	*
424	* - When searching via class code, the OEMHLP$ interface doesn't allow
425	* setting a bitmask to look for individual portions of class code,
426	* subclass code and programming interface. However, all bitmasks in the
427	* PCI list currently use 0xffffff, thus this should not be a problem at
428	* this point in time.
429	*
430	* - Scanning via OEMHLP$ seems rather slow, at least in the virtual
431	* machine I'm currenly using to test this driver. Thus, class code
432	* scans are preferred unless the option "-t" (thorough_scan) has been
433	* specified. The assumption is that most, if not all, modern AHCI
434	* adapters have the correct class code (PCI_CLASS_STORAGE_SATA_AHCI).
435	*/
436	for (i = 0; pci_ids[i].vendor != 0; i++) {
437	index = 0;
438	do {
439	if (pci_ids[i].device == PCI_ANY_ID \|\| pci_ids[i].vendor == PCI_ANY_ID) {
440	/* look for class code */
441	memset(&parm, 0x00, sizeof(parm));
442	parm.find_class.class = pci_ids[i].class;
443	parm.find_class.index = index;
444	rc = oemhlp_call(OH_FIND_CLASS, &parm, &data);
445
446	} else if (thorough_scan) {
447	/* look for this specific vendor and device ID */
448	memset(&parm, 0x00, sizeof(parm));
449	parm.find_device.device = pci_ids[i].device;
450	parm.find_device.vendor = pci_ids[i].vendor;
451	parm.find_device.index = index;
452	rc = oemhlp_call(OH_FIND_DEVICE, &parm, &data);
453
454	} else {
455	rc = OH_NOT_FOUND;
456	}
457
458	if (rc == OH_SUCCESS) {
459	/* found a device */
460	int already_found = 0;
461
462	/* increment index for next loop */
463	if (++index > 180) {
464	/* something's wrong here... */
465	return;
466	}
467
468	/* check whether we already found this device */
469	for (n = 0; n < ad_info_cnt; n++) {
470	if (ad_infos[n].bus == data.find_device.bus &&
471	ad_infos[n].dev_func == data.find_device.dev_func) {
472	/* this device has already been found (e.g. via thorough scan) */
473	already_found = 1;
474	break;
475	}
476	}
477
478	if (already_found \|\| (ad_ignore & (1U << ad_indx++))) {
479	/* ignore this device; it has either already been found via a
480	* thorough scan or has been specified to be ignored via command
481	* line option */
482	continue;
483	}
484
485	/* add this PCI device to ad_infos[] */
486	add_pci_device(pci_ids + i, &data);
487	}
488
489	} while (rc == OH_SUCCESS);
490	}
491	}
492
493	/******************************************************************************
494	* Enable interrupt generation. PCI 2.3 added a bit which allows disabling
495	* interrupt generation for a device. This function clears the corresponding
496	* bit in the configuration space command register.
497	*/
498	int pci_enable_int(UCHAR bus, UCHAR dev_func)
499	{
500	ULONG tmp;
501
502	if (pci_read_conf (bus, dev_func, 4, sizeof(u32), &tmp) != OH_SUCCESS \|\|
503	pci_write_conf(bus, dev_func, 4, sizeof(u32), tmp & ~(1UL << 10)) != OH_SUCCESS) {
504	return(-1);
505	}
506	return(0);
507	}
508
509	/******************************************************************************
510	* Hack to set up proper IRQ mappings in the emulated PIIX3 ISA bridge in
511	* VirtualBox (for some reason, the first mapped IRQ is 0x80 without this
512	* hack).
513	*/
514	void pci_hack_virtualbox(void)
515	{
516	ULONG irq = 0;
517
518	if (pci_read_conf(0, 0x08, 0x60, 1, &irq) == OH_SUCCESS && irq == 0x80) {
519	/* set IRQ for first device/func to 11 */
520	dprintf("hacking virtualbox PIIX3 PCI to ISA bridge IRQ mapping\n");
521	irq = ad_infos[0].irq;
522	pci_write_conf(0, 0x08, 0x60, 1, irq);
523	}
524	}
525
526	/******************************************************************************
527	* Add a single PCI device to the list of adapters.
528	*/
529	static void add_pci_device(PCI_ID pci_id, OH_DATA _far data)
530	{
531	char rc_list_buf[sizeof(AHRESOURCE) + sizeof(HRESOURCE) * 15];
532	AHRESOURCE _far rc_list = (AHRESOURCE _far ) rc_list_buf;
533	RESOURCESTRUCT resource;
534	ADAPTERSTRUCT adapter;
535	ADJUNCT adj;
536	AD_INFO *ad_info;
537	APIRET ret;
538	UCHAR bus = data->find_class.bus;
539	UCHAR dev_func = data->find_class.dev_func;
540	ULONG val;
541	SEL gdt[PORT_DMA_BUF_SEGS + 1];
542	char tmp[40];
543	u16 device;
544	u16 vendor;
545	u32 class;
546	int irq;
547	int pin;
548	int i;
549
550	/*****************************************************************************
551	* Part 1: Get further information about the device to be added; PCI ID...
552	*/
553	if (pci_read_conf(bus, dev_func, 0x00, sizeof(ULONG), &val) != OH_SUCCESS) {
554	return;
555	}
556	device = (u16) (val >> 16);
557	vendor = (u16) (val & 0xffff);
558
559	/* ... and class code */
560	if (pci_read_conf(bus, dev_func, 0x08, sizeof(ULONG), &val) != OH_SUCCESS) {
561	return;
562	}
563	class = (u32) (val >> 8);
564
565	if (pci_id->device == PCI_ANY_ID) {
566	/* We found this device in a wildcard search. There are two possible
567	* reasons which require a different handling:
568	*
569	* 1) This device uses a non-standard PCI class and has been identified
570	* with the corresponding class in pci_ids[] (e.g. the entry
571	* PCI_VENDOR_ID_JMICRON), but there is a vendor ID in pci_ids[]. In
572	* this case, we need to verify that the vendor is correct (see
573	* comments regarding OEMHLP limitations in 'scan_pci_bus()')
574	*
575	* 2) This device was identified using a generic PCI class for AHCI
576	* adapters such as PCI_CLASS_STORAGE_SATA_AHCI and we need to map
577	* the device and vendor ID to the corresponding index in pci_ids[]
578	* if there is such an entry; the index passed to this function will
579	* be the generic class-based index which is fine as long as there's
580	* not special treatment required as indicated by the board_*
581	* constants in pci_ids[]...
582	*
583	* The main reason for this kludge is that it seems as if OEMHLP$
584	* is rather slow searching for PCI devices, adding around 30s
585	* to the boot time when scanning for individual AHCI PCI IDs. Thus,
586	* the OS2AHCI driver avoids this kind of scan in favor of a class-
587	* based scan (unless overridden with the "/T" option).
588	*/
589	if (pci_id->vendor != PCI_ANY_ID) {
590	/* case 1: the vendor is known but we found the PCI device using a class
591	* search; verify vendor matches the one in pci_ids[]
592	*/
593	if (pci_id->vendor != vendor) {
594	/* vendor doesn't match */
595	return;
596	}
597
598	} else {
599	/* case 2: we found this device using a generic class search; if the
600	* device/vendor is listed in pci_ids[], use this entry in favor of the
601	* one passed in 'pci_id'
602	*/
603	for (i = 0; pci_ids[i].vendor != 0; i++) {
604	if (pci_ids[i].device == device && pci_ids[i].vendor == vendor) {
605	pci_id = pci_ids + i;
606	break;
607	}
608	}
609	}
610	}
611
612	/* found a supported AHCI device */
613	ciiprintf("Found AHCI device %s %s (%d:%d:%d %04x:%04x) class:0x%06lx\n",
614	vendor_from_id(vendor), device_from_id(device),
615	bus, dev_func>>3, dev_func&7, vendor, device, class);
616
617	/* make sure we got room in the adapter information array */
618	if (ad_info_cnt >= MAX_AD - 1) {
619	cprintf("%s: too many AHCI devices\n", drv_name);
620	return;
621	}
622
623	/****************************************************************************
624	* Part 2: Determine resource requirements and allocate resources with the
625	* OS/2 resource manager. While doing so, some of the entries of the
626	* corresponding slot in the AD_INFO array, namely resource manager
627	* handles, are initialized so we need prepare the slot.
628	*
629	* NOTE: While registering resources with the resource manager, each new
630	* resource is added to the corresponding rc_list.hResource[] slot.
631	* rc_list is used further down to associate resources to adapters
632	* when the adapter itself is registered with the OS/2 resource
633	* manager.
634	*/
635	ad_info = ad_infos + ad_info_cnt;
636	memset(ad_info, 0x00, sizeof(*ad_info));
637	rc_list->NumResource = 0;
638
639	/* Register IRQ with resource manager
640	*
641	* NOTE: We rely on the IRQ number saved in the PCI config space by the PCI
642	* BIOS. There's no reliable way to find out the IRQ number in any
643	* other way unless we start using message-driven interrupts (which
644	* is out of scope for the time being).
645	*/
646	if (pci_read_conf(bus, dev_func, 0x3c, sizeof(u32), &val) != OH_SUCCESS) {
647	return;
648	}
649	irq = (int) (val & 0xff);
650	pin = (int) ((val >> 8) & 0xff);
651
652	memset(&resource, 0x00, sizeof(resource));
653	resource.ResourceType = RS_TYPE_IRQ;
654	resource.IRQResource.IRQLevel = irq;
655	resource.IRQResource.PCIIrqPin = pin;
656	resource.IRQResource.IRQFlags = RS_IRQ_SHARED;
657
658	ret = RMAllocResource(rm_drvh, &ad_info->rm_irq, &resource);
659	if (ret != RMRC_SUCCESS) {
660	cprintf("%s: couldn't register IRQ %d (rc = %s)\n", drv_name, irq, rmerr(ret));
661	return;
662	}
663	rc_list->hResource[rc_list->NumResource++] = ad_info->rm_irq;
664
665	/* Allocate all I/O and MMIO addresses offered by this device. In theory,
666	* we need only BAR #5, the AHCI MMIO BAR, but in order to prevent any
667	* other driver from hijacking our device and accessing it via legacy
668	* registers we'll reserve anything we can find.
669	*/
670
671	ddprintf("Adapter %d PCI=%d:%d:%d ID=%04x:%04x\n", ad_info_cnt, bus, dev_func>>3, dev_func&7, vendor, device);
672
673	for (i = 0; i < sizeof(ad_info->rm_bars) / sizeof(*ad_info->rm_bars); i++) {
674	long len = bar_resource(bus, dev_func, &resource, i);
675
676	if (len < 0) {
677	/* something went wrong */
678	goto add_pci_fail;
679	}
680	if (len == 0) {
681	/* this BAR is unused */
682	continue;
683	}
684
685	if (i == AHCI_PCI_BAR) {
686	if (resource.ResourceType != RS_TYPE_MEM) {
687	cprintf("%s: BAR #5 must be an MMIO region\n", drv_name);
688	goto add_pci_fail;
689	}
690	/* save this BAR's address as MMIO address */
691	ad_info->mmio_phys = resource.MEMResource.MemBase;
692	ad_info->mmio_size = resource.MEMResource.MemSize;
693	}
694
695	/* register [MM]IO region with resource manager */
696	ret = RMAllocResource(rm_drvh, ad_info->rm_bars + i, &resource);
697	if (ret != RMRC_SUCCESS) {
698	cprintf("%s: couldn't register [MM]IO region (rc = %s)\n",
699	drv_name, rmerr(ret));
700	goto add_pci_fail;
701	}
702	rc_list->hResource[rc_list->NumResource++] = ad_info->rm_bars[i];
703	}
704
705	if (ad_info->mmio_phys == 0) {
706	cprintf("%s: couldn't determine MMIO base address\n", drv_name);
707	goto add_pci_fail;
708	}
709
710	/****************************************************************************
711	* Part 3: Fill in the remaining fields in the AD_INFO slot and allocate
712	* memory and GDT selectors for the adapter. Finally, register the adapter
713	* itself with the OS/2 resource manager
714	*/
715	ad_info->pci = pci_id;
716	ad_info->pci_vendor = vendor;
717	ad_info->pci_device = device;
718	ad_info->bus = bus;
719	ad_info->dev_func = dev_func;
720	ad_info->irq = irq;
721
722	/* allocate memory for port-specific DMA scratch buffers */
723	if (DevHelp_AllocPhys((long) AHCI_PORT_PRIV_DMA_SZ * AHCI_MAX_PORTS,
724	MEMTYPE_ABOVE_1M, &ad_info->dma_buf_phys) != 0) {
725	cprintf("%s: couldn't allocate DMA scratch buffers for AHCI ports\n", drv_name);
726	ad_info->dma_buf_phys = 0;
727	goto add_pci_fail;
728	}
729
730	/* allocate GDT selectors for memory-mapped I/O and DMA scratch buffers */
731	if (DevHelp_AllocGDTSelector(gdt, PORT_DMA_BUF_SEGS + 1) != 0) {
732	cprintf("%s: couldn't allocate GDT selectors\n", drv_name);
733	memset(gdt, 0x00, sizeof(gdt));
734	goto add_pci_fail;
735	}
736
737	/* map MMIO address to first GDT selector */
738	if (DevHelp_PhysToGDTSelector(ad_info->mmio_phys,
739	(USHORT) ad_info->mmio_size, gdt[0]) != 0) {
740	cprintf("%s: couldn't map MMIO address to GDT selector\n", drv_name);
741	goto add_pci_fail;
742	}
743
744	/* map DMA scratch buffers to remaining GDT selectors */
745	for (i = 0; i < PORT_DMA_BUF_SEGS; i++) {
746	ULONG addr = ad_info->dma_buf_phys + i * PORT_DMA_SEG_SIZE;
747	USHORT len = AHCI_PORT_PRIV_DMA_SZ * PORT_DMA_BUFS_PER_SEG;
748
749	if (DevHelp_PhysToGDTSelector(addr, len, gdt[i+1]) != 0) {
750	cprintf("%s: couldn't map DMA scratch buffer to GDT selector\n", drv_name);
751	goto add_pci_fail;
752	}
753	}
754
755	/* fill in MMIO and DMA scratch buffer addresses in adapter info */
756	ad_info->mmio = (u8 _far *) ((u32) gdt[0] << 16);
757	for (i = 0; i < PORT_DMA_BUF_SEGS; i++) {
758	ad_info->dma_buf[i] = (u8 _far *) ((u32) gdt[i+1] << 16);
759	}
760
761	/* register adapter with resource manager */
762	memset(&adj, 0x00, sizeof(adj));
763	adj.pNextAdj = NULL;
764	adj.AdjLength = sizeof(adj);
765	adj.AdjType = ADJ_ADAPTER_NUMBER;
766	adj.Adapter_Number = ad_info_cnt;
767
768	memset(&adapter, 0x00, sizeof(adapter));
769	sprintf(tmp, "AHCI_%d Controller", ad_info_cnt);
770	adapter.AdaptDescriptName = tmp;
771	adapter.AdaptFlags = 0;
772	adapter.BaseType = AS_BASE_MSD;
773	adapter.SubType = AS_SUB_IDE;
774	adapter.InterfaceType = AS_INTF_GENERIC;
775	adapter.HostBusType = AS_HOSTBUS_PCI;
776	adapter.HostBusWidth = AS_BUSWIDTH_32BIT;
777	adapter.pAdjunctList = &adj;
778
779	ret = RMCreateAdapter(rm_drvh, &ad_info->rm_adh, &adapter, NULL, rc_list);
780	if (ret != RMRC_SUCCESS) {
781	cprintf("%s: couldn't register adapter (rc = %s)\n", drv_name, rmerr(ret));
782	goto add_pci_fail;
783	}
784
785	/* Successfully added the adapter and reserved its resources; the adapter
786	* is still under BIOS control so we're not going to do anything else at
787	* this point.
788	*/
789	ad_info_cnt++;
790	return;
791
792	add_pci_fail:
793	/* something went wrong; try to clean up as far as possible */
794	for (i = 0; i < sizeof(ad_info->rm_bars) / sizeof(*ad_info->rm_bars); i++) {
795	if (ad_info->rm_bars[i] != 0) {
796	RMDeallocResource(rm_drvh, ad_info->rm_bars[i]);
797	}
798	}
799	if (ad_info->rm_irq != 0) {
800	RMDeallocResource(rm_drvh, ad_info->rm_irq);
801	}
802	for (i = 0; i < sizeof(gdt) / sizeof(*gdt); i++) {
803	if (gdt[i] != 0) {
804	DevHelp_FreeGDTSelector(gdt[i]);
805	}
806	}
807	if (ad_info->dma_buf_phys != 0) {
808	DevHelp_FreePhys(ad_info->dma_buf_phys);
809	}
810	}
811
812	/******************************************************************************
813	* Read PCI configuration space register
814	*/
815	UCHAR pci_read_conf(UCHAR bus, UCHAR dev_func, UCHAR indx, UCHAR size,
816	ULONG _far *val)
817	{
818	OH_PARM parm;
819	OH_DATA data;
820	UCHAR rc;
821
822	memset(&parm, 0x00, sizeof(parm));
823	parm.read_config.bus = bus;
824	parm.read_config.dev_func = dev_func;
825	parm.read_config.reg = indx;
826	parm.read_config.size = size;
827	if ((rc = oemhlp_call(OH_READ_CONFIG, &parm, &data) != OH_SUCCESS)) {
828	cprintf("%s: couldn't read config space (bus = %d, dev_func = 0x%02x, indx = 0x%02x, rc = %d)\n",
829	drv_name, bus, dev_func, indx, rc);
830	return(rc);
831	}
832
833	*val = data.read_config.data;
834	return(OH_SUCCESS);
835	}
836
837	/******************************************************************************
838	* Write PCI configuration space register
839	*/
840	UCHAR pci_write_conf(UCHAR bus, UCHAR dev_func, UCHAR indx, UCHAR size,
841	ULONG val)
842	{
843	OH_PARM parm;
844	OH_DATA data;
845	UCHAR rc;
846
847	memset(&parm, 0x00, sizeof(parm));
848	parm.write_config.bus = bus;
849	parm.write_config.dev_func = dev_func;
850	parm.write_config.reg = indx;
851	parm.write_config.size = size;
852	parm.write_config.data = val;
853
854	if ((rc = oemhlp_call(OH_WRITE_CONFIG, &parm, &data) != OH_SUCCESS)) {
855	cprintf("%s: couldn't write config space (bus = %d, dev_func = 0x%02x, indx = 0x%02x, rc = %d)\n",
856	drv_name, bus, dev_func, indx, rc);
857	return(rc);
858	}
859
860	return(OH_SUCCESS);
861	}
862	/******************************************************************************
863	* Call OEMHLP$ IDC entry point with the specified IOCtl parameter and data
864	* packets.
865	*/
866	static int oemhlp_call(UCHAR subfunction, OH_PARM _far *parm,
867	OH_DATA _far *data)
868	{
869	void (_far *func)(void);
870	RP_GENIOCTL ioctl;
871	unsigned short prot_idc_ds;
872
873	if (oemhlp.ProtIDCEntry == NULL \|\| oemhlp.ProtIDC_DS == 0) {
874	/* attach to OEMHLP$ device driver */
875	if (DevHelp_AttachDD("OEMHLP$ ", (NPBYTE) &oemhlp) \|\|
876	oemhlp.ProtIDCEntry == NULL \|\|
877	oemhlp.ProtIDC_DS == 0) {
878	cprintf("%s: couldn't attach to OEMHLP$\n", drv_name);
879	return(OH_NOT_SUPPORTED);
880	}
881	}
882
883	/* store subfuntion in first byte of pararameter packet */
884	parm->bios_info.subfunction = subfunction;
885	memset(data, 0x00, sizeof(*data));
886
887	/* assemble IOCtl request */
888	memset(&ioctl, 0x00, sizeof(ioctl));
889	ioctl.rph.Len = sizeof(ioctl);
890	ioctl.rph.Unit = 0;
891	ioctl.rph.Cmd = GENERIC_IOCTL;
892	ioctl.rph.Status = 0;
893
894	ioctl.Category = OH_CATEGORY;
895	ioctl.Function = OH_FUNC_PCI;
896	ioctl.ParmPacket = (PUCHAR) parm;
897	ioctl.DataPacket = (PUCHAR) data;
898	ioctl.ParmLen = sizeof(*parm);
899	ioctl.DataLen = sizeof(*data);
900
901	/* Call OEMHLP's IDC routine. Before doing so, we need to assign the address
902	* to be called to a stack variable because the inter-device driver calling
903	* convention forces us to set DS to the device driver's data segment and ES
904	* to the segment of the request packet.
905	*/
906	func = oemhlp.ProtIDCEntry;
907
908	/* The WATCOM compiler does not support struct references in inline
909	* assembler code, so we pass it in a stack variable
910	*/
911	prot_idc_ds = oemhlp.ProtIDC_DS;
912
913	_asm {
914	push ds;
915	push es;
916	push bx;
917	push si;
918	push di;
919
920	push ss
921	pop es
922	lea bx, ioctl;
923	mov ds, prot_idc_ds;
924	call dword ptr [func];
925
926	pop di;
927	pop si;
928	pop bx;
929	pop es;
930	pop ds;
931	}
932
933	//dddphex(parm, sizeof(*parm), "oemhlp_parm: ");
934	//dddphex(data, sizeof(*data), "oemhlp_data: ");
935
936	if (ioctl.rph.Status & STERR) {
937	return(OH_NOT_SUPPORTED);
938	}
939	return(data->bios_info.rc);
940	}
941
942	/******************************************************************************
943	* Prepare a resource structure for a PCI Base Address Register (BAR). This
944	* basically means the type, address and range of the I/O address space. It
945	* returns the length of the address range as a signed long to allow the caller
946	* to differentiate between error conditions (< 0), unused BARs (0) or valid
947	* bars (> 0).
948	*
949	* NOTE: In order to do this, we need to temporarily write 0xffffffff to
950	* the MMIO base address register (BAR), read back the resulting value
951	* and check the 0 bits from the right end, masking the lower 2 (I/O) or
952	* 4 (MMIO) bits. After doing this, we must restore the original value
953	* set up by the BIOS.
954	*
955	* 31 4 3 2 1 0
956	* -------------------------------------------------------------------
957	* base address P T T I
958	* P = prefetchable
959	* T = type (0 = any 32 bit, 1 = <1M, 2 = 64 bit)
960	* I = I/O (1) or memory (0)
961	*/
962	static long bar_resource(UCHAR bus, UCHAR dev_func,
963	RESOURCESTRUCT _far *resource, int i)
964	{
965	u32 bar_addr = 0;
966	u32 bar_size = 0;
967
968	/* temporarily write 1s to this BAR to determine the address range */
969	if (pci_read_conf (bus, dev_func, PCI_BAR(i), sizeof(u32), &bar_addr) != OH_SUCCESS \|\|
970	pci_write_conf(bus, dev_func, PCI_BAR(i), sizeof(u32), ~(0UL)) != OH_SUCCESS \|\|
971	pci_read_conf (bus, dev_func, PCI_BAR(i), sizeof(u32), &bar_size) != OH_SUCCESS \|\|
972	pci_write_conf(bus, dev_func, PCI_BAR(i), sizeof(u32), bar_addr) != OH_SUCCESS) {
973
974	cprintf("%s: couldn't determine [MM]IO size\n", drv_name);
975	if (bar_addr != 0) {
976	pci_write_conf(bus, dev_func, PCI_BAR(i), sizeof(u32), bar_addr);
977	}
978	return(-1);
979	}
980
981	if (bar_size == 0 \|\| bar_size == 0xffffffffUL) {
982	/* bar not implemented or device not working properly */
983	return(0);
984	}
985
986	/* prepare resource allocation structure */
987	memset(resource, 0x00, sizeof(*resource));
988	if (bar_addr & 1) {
989	bar_size = ~(bar_size & 0xfffffffcUL) + 1;
990	bar_size &= 0xffffUL; /* I/O address space is 16 bits on x86 */
991	bar_addr &= 0xfffcUL;
992
993	resource->ResourceType = RS_TYPE_IO;
994	resource->IOResource.BaseIOPort = bar_addr;
995	resource->IOResource.NumIOPorts = bar_size;
996	resource->IOResource.IOFlags = RS_IO_EXCLUSIVE;
997	resource->IOResource.IOAddressLines = 16;
998
999	} else {
1000	bar_size = ~(bar_size & 0xfffffff0UL) + 1;
1001	bar_addr &= 0xfffffff0UL;
1002
1003	resource->ResourceType = RS_TYPE_MEM;
1004	resource->MEMResource.MemBase = bar_addr;
1005	resource->MEMResource.MemSize = bar_size;
1006	resource->MEMResource.MemFlags = RS_MEM_EXCLUSIVE;
1007	}
1008
1009	ddprintf("BAR #%d: type = %s, addr = 0x%08lx, size = %ld\n", i,
1010	(resource->ResourceType == RS_TYPE_IO) ? "I/O" : "MEM",
1011	bar_addr, bar_size);
1012
1013	return((long) bar_size);
1014	}
1015
1016	/******************************************************************************
1017	* return vendor name for PCI vendor ID
1018	*/
1019	char *vendor_from_id(u16 id)
1020	{
1021
1022	switch(id) {
1023
1024	case PCI_VENDOR_ID_AL:
1025	return "Ali";
1026	case PCI_VENDOR_ID_AMD:
1027	case PCI_VENDOR_ID_ATI:
1028	return "AMD";
1029	case PCI_VENDOR_ID_AT:
1030	return "Allied Telesyn";
1031	case PCI_VENDOR_ID_ATT:
1032	return "ATT";
1033	case PCI_VENDOR_ID_CMD:
1034	return "CMD";
1035	case PCI_VENDOR_ID_CT:
1036	return "CT";
1037	case PCI_VENDOR_ID_INTEL:
1038	return "Intel";
1039	case PCI_VENDOR_ID_INITIO:
1040	return "Initio";
1041	case PCI_VENDOR_ID_JMICRON:
1042	return "JMicron";
1043	case PCI_VENDOR_ID_MARVELL:
1044	return "Marvell";
1045	case PCI_VENDOR_ID_NVIDIA:
1046	return "NVIDIA";
1047	case PCI_VENDOR_ID_PROMISE:
1048	return "PROMISE";
1049	case PCI_VENDOR_ID_SI:
1050	return "SiS";
1051	case PCI_VENDOR_ID_VIA:
1052	return "VIA";
1053	default:
1054	break;
1055	}
1056
1057	return "Generic";
1058
1059	}
1060
1061	/******************************************************************************
1062	* return a device name for a PCI device id
1063	* NOTE: this is as simple as can be, so don't call it twice in one statement.
1064	*/
1065	char *device_from_id(u16 device)
1066	{
1067	int i;
1068
1069	for (i = 0; pci_ids[i].vendor != 0; i++) {
1070
1071	if (pci_ids[i].device == device) {
1072	return pci_ids[i].chipname;
1073	}
1074
1075	}
1076
1077	return s_generic;
1078	}
1079
1080	/******************************************************************************
1081	* Return textual version of a resource manager error
1082	*/
1083	static char *rmerr(APIRET ret)
1084	{
1085	switch (ret) {
1086	case RMRC_SUCCESS:
1087	return("RMRC_SUCCESS");
1088	case RMRC_NOTINITIALIZED:
1089	return("RMRC_NOTINITIALIZED");
1090	case RMRC_BAD_DRIVERHANDLE:
1091	return("RMRC_BAD_DRIVERHANDLE");
1092	case RMRC_BAD_ADAPTERHANDLE:
1093	return("RMRC_BAD_ADAPTERHANDLE");
1094	case RMRC_BAD_DEVICEHANDLE:
1095	return("RMRC_BAD_DEVICEHANDLE");
1096	case RMRC_BAD_RESOURCEHANDLE:
1097	return("RMRC_BAD_RESOURCEHANDLE");
1098	case RMRC_BAD_LDEVHANDLE:
1099	return("RMRC_BAD_LDEVHANDLE");
1100	case RMRC_BAD_SYSNAMEHANDLE:
1101	return("RMRC_BAD_SYSNAMEHANDLE");
1102	case RMRC_BAD_DEVHELP:
1103	return("RMRC_BAD_DEVHELP");
1104	case RMRC_NULL_POINTER:
1105	return("RMRC_NULL_POINTER");
1106	case RMRC_NULL_STRINGS:
1107	return("RMRC_NULL_STRINGS");
1108	case RMRC_BAD_VERSION:
1109	return("RMRC_BAD_VERSION");
1110	case RMRC_RES_ALREADY_CLAIMED:
1111	return("RMRC_RES_ALREADY_CLAIMED");
1112	case RMRC_DEV_ALREADY_CLAIMED:
1113	return("RMRC_DEV_ALREADY_CLAIMED");
1114	case RMRC_INVALID_PARM_VALUE:
1115	return("RMRC_INVALID_PARM_VALUE");
1116	case RMRC_OUT_OF_MEMORY:
1117	return("RMRC_OUT_OF_MEMORY");
1118	case RMRC_SEARCH_FAILED:
1119	return("RMRC_SEARCH_FAILED");
1120	case RMRC_BUFFER_TOO_SMALL:
1121	return("RMRC_BUFFER_TOO_SMALL");
1122	case RMRC_GENERAL_FAILURE:
1123	return("RMRC_GENERAL_FAILURE");
1124	case RMRC_IRQ_ENTRY_ILLEGAL:
1125	return("RMRC_IRQ_ENTRY_ILLEGAL");
1126	case RMRC_NOT_IMPLEMENTED:
1127	return("RMRC_NOT_IMPLEMENTED");
1128	case RMRC_NOT_INSTALLED:
1129	return("RMRC_NOT_INSTALLED");
1130	case RMRC_BAD_DETECTHANDLE:
1131	return("RMRC_BAD_DETECTHANDLE");
1132	case RMRC_BAD_RMHANDLE:
1133	return("RMRC_BAD_RMHANDLE");
1134	case RMRC_BAD_FLAGS:
1135	return("RMRC_BAD_FLAGS");
1136	case RMRC_NO_DETECTED_DATA:
1137	return("RMRC_NO_DETECTED_DATA");
1138	default:
1139	return("RMRC_UNKOWN");
1140	}
1141	}

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