1 /*
2  * Definition of platform feature hooks for PowerMacs
3  *
4  * This file is subject to the terms and conditions of the GNU General Public
5  * License.  See the file "COPYING" in the main directory of this archive
6  * for more details.
7  *
8  * Copyright (C) 1998 Paul Mackerras &
9  *                    Ben. Herrenschmidt.
10  *
11  *
12  * Note: I removed media-bay details from the feature stuff, I believe it's
13  *       not worth it, the media-bay driver can directly use the mac-io
14  *       ASIC registers.
15  *
16  * Implementation note: Currently, none of these functions will block.
17  * However, they may internally protect themselves with a spinlock
18  * for way too long. Be prepared for at least some of these to block
19  * in the future.
20  *
21  * Unless specifically defined, the result code is assumed to be an
22  * error when negative, 0 is the default success result. Some functions
23  * may return additional positive result values.
24  *
25  * To keep implementation simple, all feature calls are assumed to have
26  * the prototype parameters (struct device_node* node, int value).
27  * When either is not used, pass 0.
28  */
29 
30 #ifdef __KERNEL__
31 #ifndef __ASM_POWERPC_PMAC_FEATURE_H
32 #define __ASM_POWERPC_PMAC_FEATURE_H
33 
34 #include <asm/macio.h>
35 #include <asm/machdep.h>
36 
37 /*
38  * Known Mac motherboard models
39  *
40  * Please, report any error here to benh@kernel.crashing.org, thanks !
41  *
42  * Note that I don't fully maintain this list for Core99 & MacRISC2
43  * and I'm considering removing all NewWorld entries from it and
44  * entirely rely on the model string.
45  */
46 
47 /* PowerSurge are the first generation of PCI Pmacs. This include
48  * all of the Grand-Central based machines. We currently don't
49  * differenciate most of them.
50  */
51 #define PMAC_TYPE_PSURGE		0x10	/* PowerSurge */
52 #define PMAC_TYPE_ANS			0x11	/* Apple Network Server */
53 
54 /* Here is the infamous serie of OHare based machines
55  */
56 #define PMAC_TYPE_COMET			0x20	/* Believed to be PowerBook 2400 */
57 #define PMAC_TYPE_HOOPER		0x21	/* Believed to be PowerBook 3400 */
58 #define PMAC_TYPE_KANGA			0x22	/* PowerBook 3500 (first G3) */
59 #define PMAC_TYPE_ALCHEMY		0x23	/* Alchemy motherboard base */
60 #define PMAC_TYPE_GAZELLE		0x24	/* Spartacus, some 5xxx/6xxx */
61 #define PMAC_TYPE_UNKNOWN_OHARE		0x2f	/* Unknown, but OHare based */
62 
63 /* Here are the Heathrow based machines
64  * FIXME: Differenciate wallstreet,mainstreet,wallstreetII
65  */
66 #define PMAC_TYPE_GOSSAMER		0x30	/* Gossamer motherboard */
67 #define PMAC_TYPE_SILK			0x31	/* Desktop PowerMac G3 */
68 #define PMAC_TYPE_WALLSTREET		0x32	/* Wallstreet/Mainstreet PowerBook*/
69 #define PMAC_TYPE_UNKNOWN_HEATHROW	0x3f	/* Unknown but heathrow based */
70 
71 /* Here are newworld machines based on Paddington (heathrow derivative)
72  */
73 #define PMAC_TYPE_101_PBOOK		0x40	/* 101 PowerBook (aka Lombard) */
74 #define PMAC_TYPE_ORIG_IMAC		0x41	/* First generation iMac */
75 #define PMAC_TYPE_YOSEMITE		0x42	/* B&W G3 */
76 #define PMAC_TYPE_YIKES			0x43	/* Yikes G4 (PCI graphics) */
77 #define PMAC_TYPE_UNKNOWN_PADDINGTON	0x4f	/* Unknown but paddington based */
78 
79 /* Core99 machines based on UniNorth 1.0 and 1.5
80  *
81  * Note: A single entry here may cover several actual models according
82  * to the device-tree. (Sawtooth is most tower G4s, FW_IMAC is most
83  * FireWire based iMacs, etc...). Those machines are too similar to be
84  * distinguished here, when they need to be differencied, use the
85  * device-tree "model" or "compatible" property.
86  */
87 #define PMAC_TYPE_ORIG_IBOOK		0x40	/* First iBook model (no firewire) */
88 #define PMAC_TYPE_SAWTOOTH		0x41	/* Desktop G4s */
89 #define PMAC_TYPE_FW_IMAC		0x42	/* FireWire iMacs (except Pangea based) */
90 #define PMAC_TYPE_FW_IBOOK		0x43	/* FireWire iBooks (except iBook2) */
91 #define PMAC_TYPE_CUBE			0x44	/* Cube PowerMac */
92 #define PMAC_TYPE_QUICKSILVER		0x45	/* QuickSilver G4s */
93 #define PMAC_TYPE_PISMO			0x46	/* Pismo PowerBook */
94 #define PMAC_TYPE_TITANIUM		0x47	/* Titanium PowerBook */
95 #define PMAC_TYPE_TITANIUM2		0x48	/* Titanium II PowerBook (no L3, M6) */
96 #define PMAC_TYPE_TITANIUM3		0x49	/* Titanium III PowerBook (with L3 & M7) */
97 #define PMAC_TYPE_TITANIUM4		0x50	/* Titanium IV PowerBook (with L3 & M9) */
98 #define PMAC_TYPE_EMAC			0x50	/* eMac */
99 #define PMAC_TYPE_UNKNOWN_CORE99	0x5f
100 
101 /* MacRisc2 with UniNorth 2.0 */
102 #define PMAC_TYPE_RACKMAC		0x80	/* XServe */
103 #define PMAC_TYPE_WINDTUNNEL		0x81
104 
105 /* MacRISC2 machines based on the Pangea chipset
106  */
107 #define PMAC_TYPE_PANGEA_IMAC		0x100	/* Flower Power iMac */
108 #define PMAC_TYPE_IBOOK2		0x101	/* iBook2 (polycarbonate) */
109 #define PMAC_TYPE_FLAT_PANEL_IMAC	0x102	/* Flat panel iMac */
110 #define PMAC_TYPE_UNKNOWN_PANGEA	0x10f
111 
112 /* MacRISC2 machines based on the Intrepid chipset
113  */
114 #define PMAC_TYPE_UNKNOWN_INTREPID	0x11f	/* Generic */
115 
116 /* MacRISC4 / G5 machines. We don't have per-machine selection here anymore,
117  * but rather machine families
118  */
119 #define PMAC_TYPE_POWERMAC_G5		0x150	/* U3 & U3H based */
120 #define PMAC_TYPE_POWERMAC_G5_U3L	0x151	/* U3L based desktop */
121 #define PMAC_TYPE_IMAC_G5		0x152	/* iMac G5 */
122 #define PMAC_TYPE_XSERVE_G5		0x153	/* Xserve G5 */
123 #define PMAC_TYPE_UNKNOWN_K2		0x19f	/* Any other K2 based */
124 #define PMAC_TYPE_UNKNOWN_SHASTA       	0x19e	/* Any other Shasta based */
125 
126 /*
127  * Motherboard flags
128  */
129 
130 #define PMAC_MB_CAN_SLEEP		0x00000001
131 #define PMAC_MB_HAS_FW_POWER		0x00000002
132 #define PMAC_MB_OLD_CORE99		0x00000004
133 #define PMAC_MB_MOBILE			0x00000008
134 #define PMAC_MB_MAY_SLEEP		0x00000010
135 
136 /*
137  * Feature calls supported on pmac
138  *
139  */
140 
141 /*
142  * Use this inline wrapper
143  */
144 struct device_node;
145 
pmac_call_feature(int selector,struct device_node * node,long param,long value)146 static inline long pmac_call_feature(int selector, struct device_node* node,
147 					long param, long value)
148 {
149 	if (!ppc_md.feature_call || !machine_is(powermac))
150 		return -ENODEV;
151 	return ppc_md.feature_call(selector, node, param, value);
152 }
153 
154 /* PMAC_FTR_SERIAL_ENABLE	(struct device_node* node, int param, int value)
155  * enable/disable an SCC side. Pass the node corresponding to the
156  * channel side as a parameter.
157  * param is the type of port
158  * if param is ored with PMAC_SCC_FLAG_XMON, then the SCC is locked enabled
159  * for use by xmon.
160  */
161 #define PMAC_FTR_SCC_ENABLE		PMAC_FTR_DEF(0)
162 	#define PMAC_SCC_ASYNC		0
163 	#define PMAC_SCC_IRDA		1
164 	#define PMAC_SCC_I2S1		2
165 	#define PMAC_SCC_FLAG_XMON	0x00001000
166 
167 /* PMAC_FTR_MODEM_ENABLE	(struct device_node* node, 0, int value)
168  * enable/disable the internal modem.
169  */
170 #define PMAC_FTR_MODEM_ENABLE		PMAC_FTR_DEF(1)
171 
172 /* PMAC_FTR_SWIM3_ENABLE	(struct device_node* node, 0,int value)
173  * enable/disable the swim3 (floppy) cell of a mac-io ASIC
174  */
175 #define PMAC_FTR_SWIM3_ENABLE		PMAC_FTR_DEF(2)
176 
177 /* PMAC_FTR_MESH_ENABLE		(struct device_node* node, 0, int value)
178  * enable/disable the mesh (scsi) cell of a mac-io ASIC
179  */
180 #define PMAC_FTR_MESH_ENABLE		PMAC_FTR_DEF(3)
181 
182 /* PMAC_FTR_IDE_ENABLE		(struct device_node* node, int busID, int value)
183  * enable/disable an IDE port of a mac-io ASIC
184  * pass the busID parameter
185  */
186 #define PMAC_FTR_IDE_ENABLE		PMAC_FTR_DEF(4)
187 
188 /* PMAC_FTR_IDE_RESET		(struct device_node* node, int busID, int value)
189  * assert(1)/release(0) an IDE reset line (mac-io IDE only)
190  */
191 #define PMAC_FTR_IDE_RESET		PMAC_FTR_DEF(5)
192 
193 /* PMAC_FTR_BMAC_ENABLE		(struct device_node* node, 0, int value)
194  * enable/disable the bmac (ethernet) cell of a mac-io ASIC, also drive
195  * it's reset line
196  */
197 #define PMAC_FTR_BMAC_ENABLE		PMAC_FTR_DEF(6)
198 
199 /* PMAC_FTR_GMAC_ENABLE		(struct device_node* node, 0, int value)
200  * enable/disable the gmac (ethernet) cell of an uninorth ASIC. This
201  * control the cell's clock.
202  */
203 #define PMAC_FTR_GMAC_ENABLE		PMAC_FTR_DEF(7)
204 
205 /* PMAC_FTR_GMAC_PHY_RESET	(struct device_node* node, 0, 0)
206  * Perform a HW reset of the PHY connected to a gmac controller.
207  * Pass the gmac device node, not the PHY node.
208  */
209 #define PMAC_FTR_GMAC_PHY_RESET		PMAC_FTR_DEF(8)
210 
211 /* PMAC_FTR_SOUND_CHIP_ENABLE	(struct device_node* node, 0, int value)
212  * enable/disable the sound chip, whatever it is and provided it can
213  * acually be controlled
214  */
215 #define PMAC_FTR_SOUND_CHIP_ENABLE	PMAC_FTR_DEF(9)
216 
217 /* -- add various tweaks related to sound routing -- */
218 
219 /* PMAC_FTR_AIRPORT_ENABLE	(struct device_node* node, 0, int value)
220  * enable/disable the airport card
221  */
222 #define PMAC_FTR_AIRPORT_ENABLE		PMAC_FTR_DEF(10)
223 
224 /* PMAC_FTR_RESET_CPU		(NULL, int cpu_nr, 0)
225  * toggle the reset line of a CPU on an uninorth-based SMP machine
226  */
227 #define PMAC_FTR_RESET_CPU		PMAC_FTR_DEF(11)
228 
229 /* PMAC_FTR_USB_ENABLE		(struct device_node* node, 0, int value)
230  * enable/disable an USB cell, along with the power of the USB "pad"
231  * on keylargo based machines
232  */
233 #define PMAC_FTR_USB_ENABLE		PMAC_FTR_DEF(12)
234 
235 /* PMAC_FTR_1394_ENABLE		(struct device_node* node, 0, int value)
236  * enable/disable the firewire cell of an uninorth ASIC.
237  */
238 #define PMAC_FTR_1394_ENABLE		PMAC_FTR_DEF(13)
239 
240 /* PMAC_FTR_1394_CABLE_POWER	(struct device_node* node, 0, int value)
241  * enable/disable the firewire cable power supply of the uninorth
242  * firewire cell
243  */
244 #define PMAC_FTR_1394_CABLE_POWER	PMAC_FTR_DEF(14)
245 
246 /* PMAC_FTR_SLEEP_STATE		(struct device_node* node, 0, int value)
247  * set the sleep state of the motherboard.
248  *
249  * Pass -1 as value to query for sleep capability
250  * Pass 1 to set IOs to sleep
251  * Pass 0 to set IOs to wake
252  */
253 #define PMAC_FTR_SLEEP_STATE		PMAC_FTR_DEF(15)
254 
255 /* PMAC_FTR_GET_MB_INFO		(NULL, selector, 0)
256  *
257  * returns some motherboard infos.
258  * selector: 0  - model id
259  *           1  - model flags (capabilities)
260  *           2  - model name (cast to const char *)
261  */
262 #define PMAC_FTR_GET_MB_INFO		PMAC_FTR_DEF(16)
263 #define   PMAC_MB_INFO_MODEL	0
264 #define   PMAC_MB_INFO_FLAGS	1
265 #define   PMAC_MB_INFO_NAME	2
266 
267 /* PMAC_FTR_READ_GPIO		(NULL, int index, 0)
268  *
269  * read a GPIO from a mac-io controller of type KeyLargo or Pangea.
270  * the value returned is a byte (positive), or a negative error code
271  */
272 #define PMAC_FTR_READ_GPIO		PMAC_FTR_DEF(17)
273 
274 /* PMAC_FTR_WRITE_GPIO		(NULL, int index, int value)
275  *
276  * write a GPIO of a mac-io controller of type KeyLargo or Pangea.
277  */
278 #define PMAC_FTR_WRITE_GPIO		PMAC_FTR_DEF(18)
279 
280 /* PMAC_FTR_ENABLE_MPIC
281  *
282  * Enable the MPIC cell
283  */
284 #define PMAC_FTR_ENABLE_MPIC		PMAC_FTR_DEF(19)
285 
286 /* PMAC_FTR_AACK_DELAY_ENABLE	(NULL, int enable, 0)
287  *
288  * Enable/disable the AACK delay on the northbridge for systems using DFS
289  */
290 #define PMAC_FTR_AACK_DELAY_ENABLE     	PMAC_FTR_DEF(20)
291 
292 /* PMAC_FTR_DEVICE_CAN_WAKE
293  *
294  * Used by video drivers to inform system that they can actually perform
295  * wakeup from sleep
296  */
297 #define PMAC_FTR_DEVICE_CAN_WAKE	PMAC_FTR_DEF(22)
298 
299 
300 /* Don't use those directly, they are for the sake of pmac_setup.c */
301 extern long pmac_do_feature_call(unsigned int selector, ...);
302 extern void pmac_feature_init(void);
303 
304 /* Video suspend tweak */
305 extern void pmac_set_early_video_resume(void (*proc)(void *data), void *data);
306 extern void pmac_call_early_video_resume(void);
307 
308 #define PMAC_FTR_DEF(x) ((0x6660000) | (x))
309 
310 /* The AGP driver registers itself here */
311 extern void pmac_register_agp_pm(struct pci_dev *bridge,
312 				 int (*suspend)(struct pci_dev *bridge),
313 				 int (*resume)(struct pci_dev *bridge));
314 
315 /* Those are meant to be used by video drivers to deal with AGP
316  * suspend resume properly
317  */
318 extern void pmac_suspend_agp_for_card(struct pci_dev *dev);
319 extern void pmac_resume_agp_for_card(struct pci_dev *dev);
320 
321 /*
322  * The part below is for use by macio_asic.c only, do not rely
323  * on the data structures or constants below in a normal driver
324  *
325  */
326 
327 #define MAX_MACIO_CHIPS		2
328 
329 enum {
330 	macio_unknown = 0,
331 	macio_grand_central,
332 	macio_ohare,
333 	macio_ohareII,
334 	macio_heathrow,
335 	macio_gatwick,
336 	macio_paddington,
337 	macio_keylargo,
338 	macio_pangea,
339 	macio_intrepid,
340 	macio_keylargo2,
341 	macio_shasta,
342 };
343 
344 struct macio_chip
345 {
346 	struct device_node	*of_node;
347 	int			type;
348 	const char		*name;
349 	int			rev;
350 	volatile u32		__iomem *base;
351 	unsigned long		flags;
352 
353 	/* For use by macio_asic PCI driver */
354 	struct macio_bus	lbus;
355 };
356 
357 extern struct macio_chip macio_chips[MAX_MACIO_CHIPS];
358 
359 #define MACIO_FLAG_SCCA_ON	0x00000001
360 #define MACIO_FLAG_SCCB_ON	0x00000002
361 #define MACIO_FLAG_SCC_LOCKED	0x00000004
362 #define MACIO_FLAG_AIRPORT_ON	0x00000010
363 #define MACIO_FLAG_FW_SUPPORTED	0x00000020
364 
365 extern struct macio_chip* macio_find(struct device_node* child, int type);
366 
367 #define MACIO_FCR32(macio, r)	((macio)->base + ((r) >> 2))
368 #define MACIO_FCR8(macio, r)	(((volatile u8 __iomem *)((macio)->base)) + (r))
369 
370 #define MACIO_IN32(r)		(in_le32(MACIO_FCR32(macio,r)))
371 #define MACIO_OUT32(r,v)	(out_le32(MACIO_FCR32(macio,r), (v)))
372 #define MACIO_BIS(r,v)		(MACIO_OUT32((r), MACIO_IN32(r) | (v)))
373 #define MACIO_BIC(r,v)		(MACIO_OUT32((r), MACIO_IN32(r) & ~(v)))
374 #define MACIO_IN8(r)		(in_8(MACIO_FCR8(macio,r)))
375 #define MACIO_OUT8(r,v)		(out_8(MACIO_FCR8(macio,r), (v)))
376 
377 /*
378  * Those are exported by pmac feature for internal use by arch code
379  * only like the platform function callbacks, do not use directly in drivers
380  */
381 extern raw_spinlock_t feature_lock;
382 extern struct device_node *uninorth_node;
383 extern u32 __iomem *uninorth_base;
384 
385 /*
386  * Uninorth reg. access. Note that Uni-N regs are big endian
387  */
388 
389 #define UN_REG(r)	(uninorth_base + ((r) >> 2))
390 #define UN_IN(r)	(in_be32(UN_REG(r)))
391 #define UN_OUT(r,v)	(out_be32(UN_REG(r), (v)))
392 #define UN_BIS(r,v)	(UN_OUT((r), UN_IN(r) | (v)))
393 #define UN_BIC(r,v)	(UN_OUT((r), UN_IN(r) & ~(v)))
394 
395 /* Uninorth variant:
396  *
397  * 0 = not uninorth
398  * 1 = U1.x or U2.x
399  * 3 = U3
400  * 4 = U4
401  */
402 extern int pmac_get_uninorth_variant(void);
403 
404 #endif /* __ASM_POWERPC_PMAC_FEATURE_H */
405 #endif /* __KERNEL__ */
406