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linux/include/asm-powerpc/pmac_feature.h
Benjamin Herrenschmidt 592a607bbc [POWERPC] Disable G5 NAP mode during SMU commands on U3 
It appears that with the U3 northbridge, if the processor is in NAP
mode the whole time while waiting for an SMU command to complete,
then the SMU will fail.  It could be related to the weird backward
mechanism the SMU uses to get to system memory via i2c to the
northbridge that doesn't operate properly when the said bridge is
in napping along with the CPU.  That is on U3 at least, U4 doesn't
seem to be affected.

This didn't show before NO_HZ as the timer wakeup was enough to make
it work it seems, but that is no longer the case.

This fixes it by disabling NAP mode on those machines while
an SMU command is in flight.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:35 +11:00

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/*
* Definition of platform feature hooks for PowerMacs
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1998 Paul Mackerras &
* Ben. Herrenschmidt.
*
*
* Note: I removed media-bay details from the feature stuff, I believe it's
* not worth it, the media-bay driver can directly use the mac-io
* ASIC registers.
*
* Implementation note: Currently, none of these functions will block.
* However, they may internally protect themselves with a spinlock
* for way too long. Be prepared for at least some of these to block
* in the future.
*
* Unless specifically defined, the result code is assumed to be an
* error when negative, 0 is the default success result. Some functions
* may return additional positive result values.
*
* To keep implementation simple, all feature calls are assumed to have
* the prototype parameters (struct device_node* node, int value).
* When either is not used, pass 0.
*/
#ifdef __KERNEL__
#ifndef __ASM_POWERPC_PMAC_FEATURE_H
#define __ASM_POWERPC_PMAC_FEATURE_H
#include <asm/macio.h>
#include <asm/machdep.h>
/*
* Known Mac motherboard models
*
* Please, report any error here to benh@kernel.crashing.org, thanks !
*
* Note that I don't fully maintain this list for Core99 & MacRISC2
* and I'm considering removing all NewWorld entries from it and
* entirely rely on the model string.
*/
/* PowerSurge are the first generation of PCI Pmacs. This include
* all of the Grand-Central based machines. We currently don't
* differenciate most of them.
*/
#define PMAC_TYPE_PSURGE 0x10 /* PowerSurge */
#define PMAC_TYPE_ANS 0x11 /* Apple Network Server */
/* Here is the infamous serie of OHare based machines
*/
#define PMAC_TYPE_COMET 0x20 /* Beleived to be PowerBook 2400 */
#define PMAC_TYPE_HOOPER 0x21 /* Beleived to be PowerBook 3400 */
#define PMAC_TYPE_KANGA 0x22 /* PowerBook 3500 (first G3) */
#define PMAC_TYPE_ALCHEMY 0x23 /* Alchemy motherboard base */
#define PMAC_TYPE_GAZELLE 0x24 /* Spartacus, some 5xxx/6xxx */
#define PMAC_TYPE_UNKNOWN_OHARE 0x2f /* Unknown, but OHare based */
/* Here are the Heathrow based machines
* FIXME: Differenciate wallstreet,mainstreet,wallstreetII
*/
#define PMAC_TYPE_GOSSAMER 0x30 /* Gossamer motherboard */
#define PMAC_TYPE_SILK 0x31 /* Desktop PowerMac G3 */
#define PMAC_TYPE_WALLSTREET 0x32 /* Wallstreet/Mainstreet PowerBook*/
#define PMAC_TYPE_UNKNOWN_HEATHROW 0x3f /* Unknown but heathrow based */
/* Here are newworld machines based on Paddington (heathrow derivative)
*/
#define PMAC_TYPE_101_PBOOK 0x40 /* 101 PowerBook (aka Lombard) */
#define PMAC_TYPE_ORIG_IMAC 0x41 /* First generation iMac */
#define PMAC_TYPE_YOSEMITE 0x42 /* B&W G3 */
#define PMAC_TYPE_YIKES 0x43 /* Yikes G4 (PCI graphics) */
#define PMAC_TYPE_UNKNOWN_PADDINGTON 0x4f /* Unknown but paddington based */
/* Core99 machines based on UniNorth 1.0 and 1.5
*
* Note: A single entry here may cover several actual models according
* to the device-tree. (Sawtooth is most tower G4s, FW_IMAC is most
* FireWire based iMacs, etc...). Those machines are too similar to be
* distinguished here, when they need to be differencied, use the
* device-tree "model" or "compatible" property.
*/
#define PMAC_TYPE_ORIG_IBOOK 0x40 /* First iBook model (no firewire) */
#define PMAC_TYPE_SAWTOOTH 0x41 /* Desktop G4s */
#define PMAC_TYPE_FW_IMAC 0x42 /* FireWire iMacs (except Pangea based) */
#define PMAC_TYPE_FW_IBOOK 0x43 /* FireWire iBooks (except iBook2) */
#define PMAC_TYPE_CUBE 0x44 /* Cube PowerMac */
#define PMAC_TYPE_QUICKSILVER 0x45 /* QuickSilver G4s */
#define PMAC_TYPE_PISMO 0x46 /* Pismo PowerBook */
#define PMAC_TYPE_TITANIUM 0x47 /* Titanium PowerBook */
#define PMAC_TYPE_TITANIUM2 0x48 /* Titanium II PowerBook (no L3, M6) */
#define PMAC_TYPE_TITANIUM3 0x49 /* Titanium III PowerBook (with L3 & M7) */
#define PMAC_TYPE_TITANIUM4 0x50 /* Titanium IV PowerBook (with L3 & M9) */
#define PMAC_TYPE_EMAC 0x50 /* eMac */
#define PMAC_TYPE_UNKNOWN_CORE99 0x5f
/* MacRisc2 with UniNorth 2.0 */
#define PMAC_TYPE_RACKMAC 0x80 /* XServe */
#define PMAC_TYPE_WINDTUNNEL 0x81
/* MacRISC2 machines based on the Pangea chipset
*/
#define PMAC_TYPE_PANGEA_IMAC 0x100 /* Flower Power iMac */
#define PMAC_TYPE_IBOOK2 0x101 /* iBook2 (polycarbonate) */
#define PMAC_TYPE_FLAT_PANEL_IMAC 0x102 /* Flat panel iMac */
#define PMAC_TYPE_UNKNOWN_PANGEA 0x10f
/* MacRISC2 machines based on the Intrepid chipset
*/
#define PMAC_TYPE_UNKNOWN_INTREPID 0x11f /* Generic */
/* MacRISC4 / G5 machines. We don't have per-machine selection here anymore,
* but rather machine families
*/
#define PMAC_TYPE_POWERMAC_G5 0x150 /* U3 & U3H based */
#define PMAC_TYPE_POWERMAC_G5_U3L 0x151 /* U3L based desktop */
#define PMAC_TYPE_IMAC_G5 0x152 /* iMac G5 */
#define PMAC_TYPE_XSERVE_G5 0x153 /* Xserve G5 */
#define PMAC_TYPE_UNKNOWN_K2 0x19f /* Any other K2 based */
#define PMAC_TYPE_UNKNOWN_SHASTA 0x19e /* Any other Shasta based */
/*
* Motherboard flags
*/
#define PMAC_MB_CAN_SLEEP 0x00000001
#define PMAC_MB_HAS_FW_POWER 0x00000002
#define PMAC_MB_OLD_CORE99 0x00000004
#define PMAC_MB_MOBILE 0x00000008
#define PMAC_MB_MAY_SLEEP 0x00000010
/*
* Feature calls supported on pmac
*
*/
/*
* Use this inline wrapper
*/
struct device_node;
static inline long pmac_call_feature(int selector, struct device_node* node,
long param, long value)
{
if (!ppc_md.feature_call || !machine_is(powermac))
return -ENODEV;
return ppc_md.feature_call(selector, node, param, value);
}
/* PMAC_FTR_SERIAL_ENABLE (struct device_node* node, int param, int value)
* enable/disable an SCC side. Pass the node corresponding to the
* channel side as a parameter.
* param is the type of port
* if param is ored with PMAC_SCC_FLAG_XMON, then the SCC is locked enabled
* for use by xmon.
*/
#define PMAC_FTR_SCC_ENABLE PMAC_FTR_DEF(0)
#define PMAC_SCC_ASYNC 0
#define PMAC_SCC_IRDA 1
#define PMAC_SCC_I2S1 2
#define PMAC_SCC_FLAG_XMON 0x00001000
/* PMAC_FTR_MODEM_ENABLE (struct device_node* node, 0, int value)
* enable/disable the internal modem.
*/
#define PMAC_FTR_MODEM_ENABLE PMAC_FTR_DEF(1)
/* PMAC_FTR_SWIM3_ENABLE (struct device_node* node, 0,int value)
* enable/disable the swim3 (floppy) cell of a mac-io ASIC
*/
#define PMAC_FTR_SWIM3_ENABLE PMAC_FTR_DEF(2)
/* PMAC_FTR_MESH_ENABLE (struct device_node* node, 0, int value)
* enable/disable the mesh (scsi) cell of a mac-io ASIC
*/
#define PMAC_FTR_MESH_ENABLE PMAC_FTR_DEF(3)
/* PMAC_FTR_IDE_ENABLE (struct device_node* node, int busID, int value)
* enable/disable an IDE port of a mac-io ASIC
* pass the busID parameter
*/
#define PMAC_FTR_IDE_ENABLE PMAC_FTR_DEF(4)
/* PMAC_FTR_IDE_RESET (struct device_node* node, int busID, int value)
* assert(1)/release(0) an IDE reset line (mac-io IDE only)
*/
#define PMAC_FTR_IDE_RESET PMAC_FTR_DEF(5)
/* PMAC_FTR_BMAC_ENABLE (struct device_node* node, 0, int value)
* enable/disable the bmac (ethernet) cell of a mac-io ASIC, also drive
* it's reset line
*/
#define PMAC_FTR_BMAC_ENABLE PMAC_FTR_DEF(6)
/* PMAC_FTR_GMAC_ENABLE (struct device_node* node, 0, int value)
* enable/disable the gmac (ethernet) cell of an uninorth ASIC. This
* control the cell's clock.
*/
#define PMAC_FTR_GMAC_ENABLE PMAC_FTR_DEF(7)
/* PMAC_FTR_GMAC_PHY_RESET (struct device_node* node, 0, 0)
* Perform a HW reset of the PHY connected to a gmac controller.
* Pass the gmac device node, not the PHY node.
*/
#define PMAC_FTR_GMAC_PHY_RESET PMAC_FTR_DEF(8)
/* PMAC_FTR_SOUND_CHIP_ENABLE (struct device_node* node, 0, int value)
* enable/disable the sound chip, whatever it is and provided it can
* acually be controlled
*/
#define PMAC_FTR_SOUND_CHIP_ENABLE PMAC_FTR_DEF(9)
/* -- add various tweaks related to sound routing -- */
/* PMAC_FTR_AIRPORT_ENABLE (struct device_node* node, 0, int value)
* enable/disable the airport card
*/
#define PMAC_FTR_AIRPORT_ENABLE PMAC_FTR_DEF(10)
/* PMAC_FTR_RESET_CPU (NULL, int cpu_nr, 0)
* toggle the reset line of a CPU on an uninorth-based SMP machine
*/
#define PMAC_FTR_RESET_CPU PMAC_FTR_DEF(11)
/* PMAC_FTR_USB_ENABLE (struct device_node* node, 0, int value)
* enable/disable an USB cell, along with the power of the USB "pad"
* on keylargo based machines
*/
#define PMAC_FTR_USB_ENABLE PMAC_FTR_DEF(12)
/* PMAC_FTR_1394_ENABLE (struct device_node* node, 0, int value)
* enable/disable the firewire cell of an uninorth ASIC.
*/
#define PMAC_FTR_1394_ENABLE PMAC_FTR_DEF(13)
/* PMAC_FTR_1394_CABLE_POWER (struct device_node* node, 0, int value)
* enable/disable the firewire cable power supply of the uninorth
* firewire cell
*/
#define PMAC_FTR_1394_CABLE_POWER PMAC_FTR_DEF(14)
/* PMAC_FTR_SLEEP_STATE (struct device_node* node, 0, int value)
* set the sleep state of the motherboard.
*
* Pass -1 as value to query for sleep capability
* Pass 1 to set IOs to sleep
* Pass 0 to set IOs to wake
*/
#define PMAC_FTR_SLEEP_STATE PMAC_FTR_DEF(15)
/* PMAC_FTR_GET_MB_INFO (NULL, selector, 0)
*
* returns some motherboard infos.
* selector: 0 - model id
* 1 - model flags (capabilities)
* 2 - model name (cast to const char *)
*/
#define PMAC_FTR_GET_MB_INFO PMAC_FTR_DEF(16)
#define PMAC_MB_INFO_MODEL 0
#define PMAC_MB_INFO_FLAGS 1
#define PMAC_MB_INFO_NAME 2
/* PMAC_FTR_READ_GPIO (NULL, int index, 0)
*
* read a GPIO from a mac-io controller of type KeyLargo or Pangea.
* the value returned is a byte (positive), or a negative error code
*/
#define PMAC_FTR_READ_GPIO PMAC_FTR_DEF(17)
/* PMAC_FTR_WRITE_GPIO (NULL, int index, int value)
*
* write a GPIO of a mac-io controller of type KeyLargo or Pangea.
*/
#define PMAC_FTR_WRITE_GPIO PMAC_FTR_DEF(18)
/* PMAC_FTR_ENABLE_MPIC
*
* Enable the MPIC cell
*/
#define PMAC_FTR_ENABLE_MPIC PMAC_FTR_DEF(19)
/* PMAC_FTR_AACK_DELAY_ENABLE (NULL, int enable, 0)
*
* Enable/disable the AACK delay on the northbridge for systems using DFS
*/
#define PMAC_FTR_AACK_DELAY_ENABLE PMAC_FTR_DEF(20)
/* PMAC_FTR_DEVICE_CAN_WAKE
*
* Used by video drivers to inform system that they can actually perform
* wakeup from sleep
*/
#define PMAC_FTR_DEVICE_CAN_WAKE PMAC_FTR_DEF(22)
/* Don't use those directly, they are for the sake of pmac_setup.c */
extern long pmac_do_feature_call(unsigned int selector, ...);
extern void pmac_feature_init(void);
/* Video suspend tweak */
extern void pmac_set_early_video_resume(void (*proc)(void *data), void *data);
extern void pmac_call_early_video_resume(void);
#define PMAC_FTR_DEF(x) ((0x6660000) | (x))
/* The AGP driver registers itself here */
extern void pmac_register_agp_pm(struct pci_dev *bridge,
int (*suspend)(struct pci_dev *bridge),
int (*resume)(struct pci_dev *bridge));
/* Those are meant to be used by video drivers to deal with AGP
* suspend resume properly
*/
extern void pmac_suspend_agp_for_card(struct pci_dev *dev);
extern void pmac_resume_agp_for_card(struct pci_dev *dev);
/*
* The part below is for use by macio_asic.c only, do not rely
* on the data structures or constants below in a normal driver
*
*/
#define MAX_MACIO_CHIPS 2
enum {
macio_unknown = 0,
macio_grand_central,
macio_ohare,
macio_ohareII,
macio_heathrow,
macio_gatwick,
macio_paddington,
macio_keylargo,
macio_pangea,
macio_intrepid,
macio_keylargo2,
macio_shasta,
};
struct macio_chip
{
struct device_node *of_node;
int type;
const char *name;
int rev;
volatile u32 __iomem *base;
unsigned long flags;
/* For use by macio_asic PCI driver */
struct macio_bus lbus;
};
extern struct macio_chip macio_chips[MAX_MACIO_CHIPS];
#define MACIO_FLAG_SCCA_ON 0x00000001
#define MACIO_FLAG_SCCB_ON 0x00000002
#define MACIO_FLAG_SCC_LOCKED 0x00000004
#define MACIO_FLAG_AIRPORT_ON 0x00000010
#define MACIO_FLAG_FW_SUPPORTED 0x00000020
extern struct macio_chip* macio_find(struct device_node* child, int type);
#define MACIO_FCR32(macio, r) ((macio)->base + ((r) >> 2))
#define MACIO_FCR8(macio, r) (((volatile u8 __iomem *)((macio)->base)) + (r))
#define MACIO_IN32(r) (in_le32(MACIO_FCR32(macio,r)))
#define MACIO_OUT32(r,v) (out_le32(MACIO_FCR32(macio,r), (v)))
#define MACIO_BIS(r,v) (MACIO_OUT32((r), MACIO_IN32(r) | (v)))
#define MACIO_BIC(r,v) (MACIO_OUT32((r), MACIO_IN32(r) & ~(v)))
#define MACIO_IN8(r) (in_8(MACIO_FCR8(macio,r)))
#define MACIO_OUT8(r,v) (out_8(MACIO_FCR8(macio,r), (v)))
/*
* Those are exported by pmac feature for internal use by arch code
* only like the platform function callbacks, do not use directly in drivers
*/
extern spinlock_t feature_lock;
extern struct device_node *uninorth_node;
extern u32 __iomem *uninorth_base;
/*
* Uninorth reg. access. Note that Uni-N regs are big endian
*/
#define UN_REG(r) (uninorth_base + ((r) >> 2))
#define UN_IN(r) (in_be32(UN_REG(r)))
#define UN_OUT(r,v) (out_be32(UN_REG(r), (v)))
#define UN_BIS(r,v) (UN_OUT((r), UN_IN(r) | (v)))
#define UN_BIC(r,v) (UN_OUT((r), UN_IN(r) & ~(v)))
/* Uninorth variant:
*
* 0 = not uninorth
* 1 = U1.x or U2.x
* 3 = U3
* 4 = U4
*/
extern int pmac_get_uninorth_variant(void);
#endif /* __ASM_POWERPC_PMAC_FEATURE_H */
#endif /* __KERNEL__ */
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