mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 13:35:07 +07:00
e8e2bfd103
Even if data snooping is enabled, without separate snoop tags snooping will not work when the MMU is enabled. Signed-off-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
258 lines
7.5 KiB
C
258 lines
7.5 KiB
C
/*
|
|
* 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
|
|
|
|
/* 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
|
|
|
|
/* 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 */
|
|
|
|
#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 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 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;
|
|
}
|
|
|
|
/* 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 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))
|
|
|
|
extern void leon_switch_mm(void);
|
|
extern void leon_init_IRQ(void);
|
|
|
|
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) && ((cctrl >> 17) & 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_IPI_DEFAULT 13
|
|
# define LEON3_IRQ_TICKER (leon3_gptimer_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 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__
|
|
struct vm_area_struct;
|
|
|
|
extern unsigned long leon_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);
|
|
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 */
|
|
};
|
|
|
|
#include <linux/irq.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
struct device_node;
|
|
struct task_struct;
|
|
extern unsigned int leon_build_device_irq(unsigned int real_irq,
|
|
irq_flow_handler_t flow_handler,
|
|
const char *name, int do_ack);
|
|
extern void leon_update_virq_handling(unsigned int virq,
|
|
irq_flow_handler_t flow_handler,
|
|
const char *name, int do_ack);
|
|
extern void leon_init_timers(void);
|
|
extern void leon_trans_init(struct device_node *dp);
|
|
extern void leon_node_init(struct device_node *dp, struct device_node ***nextp);
|
|
extern void init_leon(void);
|
|
extern void poke_leonsparc(void);
|
|
extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
|
|
extern int leon3_ticker_irq;
|
|
|
|
#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, struct task_struct *);
|
|
void leon_init_smp(void);
|
|
void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);
|
|
extern irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused);
|
|
|
|
extern unsigned int smpleon_ipi[];
|
|
extern unsigned int linux_trap_ipi15_leon[];
|
|
extern int leon_ipi_irq;
|
|
|
|
#endif /* CONFIG_SMP */
|
|
|
|
#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
|
|
|
|
#endif
|