/*
* obio.h: Some useful locations in 0xFXXXXXXXX PA obio space on sun4d.
*
* Copyright (C) 1997 Jakub Jelinek <[email protected]>
*/

#ifndef _SPARC_OBIO_H
#define _SPARC_OBIO_H

#include <asm/asi.h>

/* This weird monster likes to use the very upper parts of
36bit PA for these things :) */

/* CSR space (for each XDBUS)
* ------------------------------------------------------------------------
* | 0xFE | DEVID | | XDBUS ID | |
* ------------------------------------------------------------------------
* 35 28 27 20 19 10 9 8 7 0
*/

#define CSR_BASE_ADDR 0xe0000000
#define CSR_CPU_SHIFT (32 - 4 - 5)
#define CSR_XDBUS_SHIFT 8

#define CSR_BASE(cpu) (((CSR_BASE_ADDR >> CSR_CPU_SHIFT) + cpu) << CSR_CPU_SHIFT)

/* ECSR space (not for each XDBUS)
* ------------------------------------------------------------------------
* | 0xF | DEVID[7:1] | |
* ------------------------------------------------------------------------
* 35 32 31 25 24 0
*/

#define ECSR_BASE_ADDR 0x00000000
#define ECSR_CPU_SHIFT (32 - 5)
#define ECSR_DEV_SHIFT (32 - 8)

#define ECSR_BASE(cpu) ((cpu) << ECSR_CPU_SHIFT)
#define ECSR_DEV_BASE(devid) ((devid) << ECSR_DEV_SHIFT)

/* Bus Watcher */
#define BW_LOCAL_BASE 0xfff00000

#define BW_CID 0x00000000
#define BW_DBUS_CTRL 0x00000008
#define BW_DBUS_DATA 0x00000010
#define BW_CTRL 0x00001000
#define BW_INTR_TABLE 0x00001040
#define BW_INTR_TABLE_CLEAR 0x00001080
#define BW_PRESCALER 0x000010c0
#define BW_PTIMER_LIMIT 0x00002000
#define BW_PTIMER_COUNTER2 0x00002004
#define BW_PTIMER_NDLIMIT 0x00002008
#define BW_PTIMER_CTRL 0x0000200c
#define BW_PTIMER_COUNTER 0x00002010
#define BW_TIMER_LIMIT 0x00003000
#define BW_TIMER_COUNTER2 0x00003004
#define BW_TIMER_NDLIMIT 0x00003008
#define BW_TIMER_CTRL 0x0000300c
#define BW_TIMER_COUNTER 0x00003010

/* BW Control */
#define BW_CTRL_USER_TIMER 0x00000004 /* Is User Timer Free run enabled */

/* Boot Bus */
#define BB_LOCAL_BASE 0xf0000000

#define BB_STAT1 0x00100000
#define BB_STAT2 0x00120000
#define BB_STAT3 0x00140000
#define BB_LEDS 0x002e0000

/* Bits in BB_STAT2 */
#define BB_STAT2_AC_INTR 0x04 /* Aiee! 5ms and power is gone... */
#define BB_STAT2_TMP_INTR 0x10 /* My Penguins are burning. Are you able to smell it? */
#define BB_STAT2_FAN_INTR 0x20 /* My fan refuses to work */
#define BB_STAT2_PWR_INTR 0x40 /* On SC2000, one of the two ACs died. Ok, we go on... */
#define BB_STAT2_MASK (BB_STAT2_AC_INTR|BB_STAT2_TMP_INTR|BB_STAT2_FAN_INTR|BB_STAT2_PWR_INTR)

/* Cache Controller */
#define CC_BASE 0x1F00000
#define CC_DATSTREAM 0x1F00000 /* Data stream register */
#define CC_DATSIZE 0x1F0003F /* Size */
#define CC_SRCSTREAM 0x1F00100 /* Source stream register */
#define CC_DESSTREAM 0x1F00200 /* Destination stream register */
#define CC_RMCOUNT 0x1F00300 /* Count of references and misses */
#define CC_IPEN 0x1F00406 /* Pending Interrupts */
#define CC_IMSK 0x1F00506 /* Interrupt Mask */
#define CC_ICLR 0x1F00606 /* Clear pending Interrupts */
#define CC_IGEN 0x1F00704 /* Generate Interrupt register */
#define CC_STEST 0x1F00804 /* Internal self-test */
#define CC_CREG 0x1F00A04 /* Control register */
#define CC_SREG 0x1F00B00 /* Status register */
#define CC_RREG 0x1F00C04 /* Reset register */
#define CC_EREG 0x1F00E00 /* Error code register */
#define CC_CID 0x1F00F04 /* Component ID */

#ifndef __ASSEMBLY__

static inline int bw_get_intr_mask(int sbus_level)
{
int mask;

__asm__ __volatile__ ("lduha [%1] %2, %0" :
"=r" (mask) :
"r" (BW_LOCAL_BASE + BW_INTR_TABLE + (sbus_level << 3)),
"i" (ASI_M_CTL));
return mask;
}

static inline void bw_clear_intr_mask(int sbus_level, int mask)
{
__asm__ __volatile__ ("stha %0, [%1] %2" : :
"r" (mask),
"r" (BW_LOCAL_BASE + BW_INTR_TABLE_CLEAR + (sbus_level << 3)),
"i" (ASI_M_CTL));
}

static inline unsigned bw_get_prof_limit(int cpu)
{
unsigned limit;

__asm__ __volatile__ ("lda [%1] %2, %0" :
"=r" (limit) :
"r" (CSR_BASE(cpu) + BW_PTIMER_LIMIT),
"i" (ASI_M_CTL));
return limit;
}

static inline void bw_set_prof_limit(int cpu, unsigned limit)
{
__asm__ __volatile__ ("sta %0, [%1] %2" : :
"r" (limit),
"r" (CSR_BASE(cpu) + BW_PTIMER_LIMIT),
"i" (ASI_M_CTL));
}

static inline unsigned bw_get_ctrl(int cpu)
{
unsigned ctrl;

__asm__ __volatile__ ("lda [%1] %2, %0" :
"=r" (ctrl) :
"r" (CSR_BASE(cpu) + BW_CTRL),
"i" (ASI_M_CTL));
return ctrl;
}

static inline void bw_set_ctrl(int cpu, unsigned ctrl)
{
__asm__ __volatile__ ("sta %0, [%1] %2" : :
"r" (ctrl),
"r" (CSR_BASE(cpu) + BW_CTRL),
"i" (ASI_M_CTL));
}

static inline unsigned cc_get_ipen(void)
{
unsigned pending;

__asm__ __volatile__ ("lduha [%1] %2, %0" :
"=r" (pending) :
"r" (CC_IPEN),
"i" (ASI_M_MXCC));
return pending;
}

static inline void cc_set_iclr(unsigned clear)
{
__asm__ __volatile__ ("stha %0, [%1] %2" : :
"r" (clear),
"r" (CC_ICLR),
"i" (ASI_M_MXCC));
}

static inline unsigned cc_get_imsk(void)
{
unsigned mask;

__asm__ __volatile__ ("lduha [%1] %2, %0" :
"=r" (mask) :
"r" (CC_IMSK),
"i" (ASI_M_MXCC));
return mask;
}

static inline void cc_set_imsk(unsigned mask)
{
__asm__ __volatile__ ("stha %0, [%1] %2" : :
"r" (mask),
"r" (CC_IMSK),
"i" (ASI_M_MXCC));
}

static inline unsigned cc_get_imsk_other(int cpuid)
{
unsigned mask;

__asm__ __volatile__ ("lduha [%1] %2, %0" :
"=r" (mask) :
"r" (ECSR_BASE(cpuid) | CC_IMSK),
"i" (ASI_M_CTL));
return mask;
}

static inline void cc_set_imsk_other(int cpuid, unsigned mask)
{
__asm__ __volatile__ ("stha %0, [%1] %2" : :
"r" (mask),
"r" (ECSR_BASE(cpuid) | CC_IMSK),
"i" (ASI_M_CTL));
}

static inline void cc_set_igen(unsigned gen)
{
__asm__ __volatile__ ("sta %0, [%1] %2" : :
"r" (gen),
"r" (CC_IGEN),
"i" (ASI_M_MXCC));
}

#endif /* !__ASSEMBLY__ */

#endif /* !(_SPARC_OBIO_H) */