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linux-next/arch/sparc/include/asm/leon.h
Daniel Hellstrom e2305e37d4 SPARC/LEON: added support for IRQAMP IRQ Controller 
Needed for LEON AMP systems where different CPUs are routed to

different IRQ controllers. This patch selects the IRQ Controller
which has been routed to the boot CPU, it is up to the boot loader
to configure the IRQ controller.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-04 11:16:36 -08:00

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/*
* Copyright (C) 2004 Konrad Eisele (eiselekd@web.de,konrad@gaisler.com) Gaisler Research
* Copyright (C) 2004 Stefan Holst (mail@s-holst.de) Uni-Stuttgart
* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
*/
#ifndef LEON_H_INCLUDE
#define LEON_H_INCLUDE
#ifdef CONFIG_SPARC_LEON
#define ASI_LEON_NOCACHE 0x01
#define ASI_LEON_DCACHE_MISS 0x1
#define ASI_LEON_CACHEREGS 0x02
#define ASI_LEON_IFLUSH 0x10
#define ASI_LEON_DFLUSH 0x11
#define ASI_LEON_MMUFLUSH 0x18
#define ASI_LEON_MMUREGS 0x19
#define ASI_LEON_BYPASS 0x1c
#define ASI_LEON_FLUSH_PAGE 0x10
/* mmu register access, ASI_LEON_MMUREGS */
#define LEON_CNR_CTRL 0x000
#define LEON_CNR_CTXP 0x100
#define LEON_CNR_CTX 0x200
#define LEON_CNR_F 0x300
#define LEON_CNR_FADDR 0x400
#define LEON_CNR_CTX_NCTX 256 /*number of MMU ctx */
#define LEON_CNR_CTRL_TLBDIS 0x80000000
#define LEON_MMUTLB_ENT_MAX 64
/*
* diagnostic access from mmutlb.vhd:
* 0: pte address
* 4: pte
* 8: additional flags
*/
#define LEON_DIAGF_LVL 0x3
#define LEON_DIAGF_WR 0x8
#define LEON_DIAGF_WR_SHIFT 3
#define LEON_DIAGF_HIT 0x10
#define LEON_DIAGF_HIT_SHIFT 4
#define LEON_DIAGF_CTX 0x1fe0
#define LEON_DIAGF_CTX_SHIFT 5
#define LEON_DIAGF_VALID 0x2000
#define LEON_DIAGF_VALID_SHIFT 13
/*
* Interrupt Sources
*
* The interrupt source numbers directly map to the trap type and to
* the bits used in the Interrupt Clear, Interrupt Force, Interrupt Mask,
* and the Interrupt Pending Registers.
*/
#define LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR 1
#define LEON_INTERRUPT_UART_1_RX_TX 2
#define LEON_INTERRUPT_UART_0_RX_TX 3
#define LEON_INTERRUPT_EXTERNAL_0 4
#define LEON_INTERRUPT_EXTERNAL_1 5
#define LEON_INTERRUPT_EXTERNAL_2 6
#define LEON_INTERRUPT_EXTERNAL_3 7
#define LEON_INTERRUPT_TIMER1 8
#define LEON_INTERRUPT_TIMER2 9
#define LEON_INTERRUPT_EMPTY1 10
#define LEON_INTERRUPT_EMPTY2 11
#define LEON_INTERRUPT_OPEN_ETH 12
#define LEON_INTERRUPT_EMPTY4 13
#define LEON_INTERRUPT_EMPTY5 14
#define LEON_INTERRUPT_EMPTY6 15
/* irq masks */
#define LEON_HARD_INT(x) (1 << (x)) /* irq 0-15 */
#define LEON_IRQMASK_R 0x0000fffe /* bit 15- 1 of lregs.irqmask */
#define LEON_IRQPRIO_R 0xfffe0000 /* bit 31-17 of lregs.irqmask */
/* leon uart register definitions */
#define LEON_OFF_UDATA 0x0
#define LEON_OFF_USTAT 0x4
#define LEON_OFF_UCTRL 0x8
#define LEON_OFF_USCAL 0xc
#define LEON_UCTRL_RE 0x01
#define LEON_UCTRL_TE 0x02
#define LEON_UCTRL_RI 0x04
#define LEON_UCTRL_TI 0x08
#define LEON_UCTRL_PS 0x10
#define LEON_UCTRL_PE 0x20
#define LEON_UCTRL_FL 0x40
#define LEON_UCTRL_LB 0x80
#define LEON_USTAT_DR 0x01
#define LEON_USTAT_TS 0x02
#define LEON_USTAT_TH 0x04
#define LEON_USTAT_BR 0x08
#define LEON_USTAT_OV 0x10
#define LEON_USTAT_PE 0x20
#define LEON_USTAT_FE 0x40
#define LEON_MCFG2_SRAMDIS 0x00002000
#define LEON_MCFG2_SDRAMEN 0x00004000
#define LEON_MCFG2_SRAMBANKSZ 0x00001e00 /* [12-9] */
#define LEON_MCFG2_SRAMBANKSZ_SHIFT 9
#define LEON_MCFG2_SDRAMBANKSZ 0x03800000 /* [25-23] */
#define LEON_MCFG2_SDRAMBANKSZ_SHIFT 23
#define LEON_TCNT0_MASK 0x7fffff
#define LEON_USTAT_ERROR (LEON_USTAT_OV | LEON_USTAT_PE | LEON_USTAT_FE)
/* no break yet */
#define ASI_LEON3_SYSCTRL 0x02
#define ASI_LEON3_SYSCTRL_ICFG 0x08
#define ASI_LEON3_SYSCTRL_DCFG 0x0c
#define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1 << 27)
#define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1 << ((c >> 20) & 0xf))
#ifndef __ASSEMBLY__
/* do a virtual address read without cache */
static inline unsigned long leon_readnobuffer_reg(unsigned long paddr)
{
unsigned long retval;
__asm__ __volatile__("lda [%1] %2, %0\n\t" :
"=r"(retval) : "r"(paddr), "i"(ASI_LEON_NOCACHE));
return retval;
}
/* do a physical address bypass write, i.e. for 0x80000000 */
static inline void leon_store_reg(unsigned long paddr, unsigned long value)
{
__asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr),
"i"(ASI_LEON_BYPASS) : "memory");
}
/* do a physical address bypass load, i.e. for 0x80000000 */
static inline unsigned long leon_load_reg(unsigned long paddr)
{
unsigned long retval;
__asm__ __volatile__("lda [%1] %2, %0\n\t" :
"=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS));
return retval;
}
static inline void leon_srmmu_disabletlb(void)
{
unsigned int retval;
__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
"i"(ASI_LEON_MMUREGS));
retval |= LEON_CNR_CTRL_TLBDIS;
__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
"i"(ASI_LEON_MMUREGS) : "memory");
}
static inline void leon_srmmu_enabletlb(void)
{
unsigned int retval;
__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
"i"(ASI_LEON_MMUREGS));
retval = retval & ~LEON_CNR_CTRL_TLBDIS;
__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
"i"(ASI_LEON_MMUREGS) : "memory");
}
/* macro access for leon_load_reg() and leon_store_reg() */
#define LEON3_BYPASS_LOAD_PA(x) (leon_load_reg((unsigned long)(x)))
#define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v)))
#define LEON3_BYPASS_ANDIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) & v)
#define LEON3_BYPASS_ORIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) | v)
#define LEON_BYPASS_LOAD_PA(x) leon_load_reg((unsigned long)(x))
#define LEON_BYPASS_STORE_PA(x, v) leon_store_reg((unsigned long)(x), (unsigned long)(v))
#define LEON_REGLOAD_PA(x) leon_load_reg((unsigned long)(x)+LEON_PREGS)
#define LEON_REGSTORE_PA(x, v) leon_store_reg((unsigned long)(x)+LEON_PREGS, (unsigned long)(v))
#define LEON_REGSTORE_OR_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) | (unsigned long)(v))
#define LEON_REGSTORE_AND_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) & (unsigned long)(v))
/* macro access for leon_readnobuffer_reg() */
#define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x))
extern void sparc_leon_eirq_register(int eirq);
extern void leon_init(void);
extern void leon_switch_mm(void);
extern void leon_init_IRQ(void);
extern unsigned long last_valid_pfn;
static inline unsigned long sparc_leon3_get_dcachecfg(void)
{
unsigned int retval;
__asm__ __volatile__("lda [%1] %2, %0\n\t" :
"=r"(retval) :
"r"(ASI_LEON3_SYSCTRL_DCFG),
"i"(ASI_LEON3_SYSCTRL));
return retval;
}
/* enable snooping */
static inline void sparc_leon3_enable_snooping(void)
{
__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
"set 0x800000, %%l2\n\t"
"or %%l2, %%l1, %%l2\n\t"
"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
};
static inline int sparc_leon3_snooping_enabled(void)
{
u32 cctrl;
__asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl));
return (cctrl >> 23) & 1;
};
static inline void sparc_leon3_disable_cache(void)
{
__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
"set 0x00000f, %%l2\n\t"
"andn %%l2, %%l1, %%l2\n\t"
"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
};
static inline unsigned long sparc_leon3_asr17(void)
{
u32 asr17;
__asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17));
return asr17;
};
static inline int sparc_leon3_cpuid(void)
{
return sparc_leon3_asr17() >> 28;
}
#endif /*!__ASSEMBLY__*/
#ifdef CONFIG_SMP
# define LEON3_IRQ_RESCHEDULE 13
# define LEON3_IRQ_TICKER (leon_percpu_timer_dev[0].irq)
# define LEON3_IRQ_CROSS_CALL 15
#endif
#if defined(PAGE_SIZE_LEON_8K)
#define LEON_PAGE_SIZE_LEON 1
#elif defined(PAGE_SIZE_LEON_16K)
#define LEON_PAGE_SIZE_LEON 2)
#else
#define LEON_PAGE_SIZE_LEON 0
#endif
#if LEON_PAGE_SIZE_LEON == 0
/* [ 8, 6, 6 ] + 12 */
#define LEON_PGD_SH 24
#define LEON_PGD_M 0xff
#define LEON_PMD_SH 18
#define LEON_PMD_SH_V (LEON_PGD_SH-2)
#define LEON_PMD_M 0x3f
#define LEON_PTE_SH 12
#define LEON_PTE_M 0x3f
#elif LEON_PAGE_SIZE_LEON == 1
/* [ 7, 6, 6 ] + 13 */
#define LEON_PGD_SH 25
#define LEON_PGD_M 0x7f
#define LEON_PMD_SH 19
#define LEON_PMD_SH_V (LEON_PGD_SH-1)
#define LEON_PMD_M 0x3f
#define LEON_PTE_SH 13
#define LEON_PTE_M 0x3f
#elif LEON_PAGE_SIZE_LEON == 2
/* [ 6, 6, 6 ] + 14 */
#define LEON_PGD_SH 26
#define LEON_PGD_M 0x3f
#define LEON_PMD_SH 20
#define LEON_PMD_SH_V (LEON_PGD_SH-0)
#define LEON_PMD_M 0x3f
#define LEON_PTE_SH 14
#define LEON_PTE_M 0x3f
#elif LEON_PAGE_SIZE_LEON == 3
/* [ 4, 7, 6 ] + 15 */
#define LEON_PGD_SH 28
#define LEON_PGD_M 0x0f
#define LEON_PMD_SH 21
#define LEON_PMD_SH_V (LEON_PGD_SH-0)
#define LEON_PMD_M 0x7f
#define LEON_PTE_SH 15
#define LEON_PTE_M 0x3f
#else
#error cannot determine LEON_PAGE_SIZE_LEON
#endif
#define PAGE_MIN_SHIFT (12)
#define PAGE_MIN_SIZE (1UL << PAGE_MIN_SHIFT)
#define LEON3_XCCR_SETS_MASK 0x07000000UL
#define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
#define LEON2_CCR_DSETS_MASK 0x03000000UL
#define LEON2_CFG_SSIZE_MASK 0x00007000UL
#ifndef __ASSEMBLY__
extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
extern void leon_flush_icache_all(void);
extern void leon_flush_dcache_all(void);
extern void leon_flush_cache_all(void);
extern void leon_flush_tlb_all(void);
extern int leon_flush_during_switch;
extern int leon_flush_needed(void);
struct vm_area_struct;
extern void leon_flush_icache_all(void);
extern void leon_flush_dcache_all(void);
extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
extern void leon_flush_cache_all(void);
extern void leon_flush_tlb_all(void);
extern int leon_flush_during_switch;
extern int leon_flush_needed(void);
extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
/* struct that hold LEON3 cache configuration registers */
struct leon3_cacheregs {
unsigned long ccr; /* 0x00 - Cache Control Register */
unsigned long iccr; /* 0x08 - Instruction Cache Configuration Register */
unsigned long dccr; /* 0x0c - Data Cache Configuration Register */
};
/* struct that hold LEON2 cache configuration register
* & configuration register
*/
struct leon2_cacheregs {
unsigned long ccr, cfg;
};
#ifdef __KERNEL__
#include <linux/interrupt.h>
struct device_node;
extern int sparc_leon_eirq_get(int eirq, int cpu);
extern irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id);
extern void sparc_leon_eirq_register(int eirq);
extern void leon_clear_clock_irq(void);
extern void leon_load_profile_irq(int cpu, unsigned int limit);
extern void leon_init_timers(irq_handler_t counter_fn);
extern void leon_clear_clock_irq(void);
extern void leon_load_profile_irq(int cpu, unsigned int limit);
extern void leon_trans_init(struct device_node *dp);
extern void leon_node_init(struct device_node *dp, struct device_node ***nextp);
extern void leon_init_IRQ(void);
extern void leon_init(void);
extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
extern void init_leon(void);
extern void poke_leonsparc(void);
extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
extern int leon_flush_needed(void);
extern void leon_switch_mm(void);
extern int srmmu_swprobe_trace;
#ifdef CONFIG_SMP
extern int leon_smp_nrcpus(void);
extern void leon_clear_profile_irq(int cpu);
extern void leon_smp_done(void);
extern void leon_boot_cpus(void);
extern int leon_boot_one_cpu(int i);
void leon_init_smp(void);
extern void cpu_probe(void);
extern void cpu_idle(void);
extern void init_IRQ(void);
extern void cpu_panic(void);
extern int __leon_processor_id(void);
void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);
extern unsigned int real_irq_entry[], smpleon_ticker[];
extern unsigned int patchme_maybe_smp_msg[];
extern unsigned long trapbase_cpu1[];
extern unsigned long trapbase_cpu2[];
extern unsigned long trapbase_cpu3[];
extern unsigned int t_nmi[], linux_trap_ipi15_leon[];
extern unsigned int linux_trap_ipi15_sun4m[];
#endif /* CONFIG_SMP */
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
/* macros used in leon_mm.c */
#define PFN(x) ((x) >> PAGE_SHIFT)
#define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
#define _SRMMU_PTE_PMASK_LEON 0xffffffff
#else /* defined(CONFIG_SPARC_LEON) */
/* nop definitions for !LEON case */
#define leon_init() do {} while (0)
#define leon_switch_mm() do {} while (0)
#define leon_init_IRQ() do {} while (0)
#define init_leon() do {} while (0)
#define leon_smp_done() do {} while (0)
#define leon_boot_cpus() do {} while (0)
#define leon_boot_one_cpu(i) 1
#define leon_init_smp() do {} while (0)
#endif /* !defined(CONFIG_SPARC_LEON) */
#endif
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