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266 lines
7.7 KiB
266 lines
7.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2004 Konrad Eisele ([email protected],[email protected]) Gaisler Research |
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* Copyright (C) 2004 Stefan Holst ([email protected]) Uni-Stuttgart |
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* Copyright (C) 2009 Daniel Hellstrom ([email protected]) Aeroflex Gaisler AB |
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* Copyright (C) 2009 Konrad Eisele ([email protected]) Aeroflex Gaisler AB |
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*/ |
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#ifndef LEON_H_INCLUDE |
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#define LEON_H_INCLUDE |
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/* mmu register access, ASI_LEON_MMUREGS */ |
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#define LEON_CNR_CTRL 0x000 |
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#define LEON_CNR_CTXP 0x100 |
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#define LEON_CNR_CTX 0x200 |
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#define LEON_CNR_F 0x300 |
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#define LEON_CNR_FADDR 0x400 |
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#define LEON_CNR_CTX_NCTX 256 /*number of MMU ctx */ |
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#define LEON_CNR_CTRL_TLBDIS 0x80000000 |
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#define LEON_MMUTLB_ENT_MAX 64 |
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/* |
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* diagnostic access from mmutlb.vhd: |
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* 0: pte address |
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* 4: pte |
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* 8: additional flags |
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*/ |
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#define LEON_DIAGF_LVL 0x3 |
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#define LEON_DIAGF_WR 0x8 |
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#define LEON_DIAGF_WR_SHIFT 3 |
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#define LEON_DIAGF_HIT 0x10 |
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#define LEON_DIAGF_HIT_SHIFT 4 |
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#define LEON_DIAGF_CTX 0x1fe0 |
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#define LEON_DIAGF_CTX_SHIFT 5 |
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#define LEON_DIAGF_VALID 0x2000 |
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#define LEON_DIAGF_VALID_SHIFT 13 |
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/* irq masks */ |
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#define LEON_HARD_INT(x) (1 << (x)) /* irq 0-15 */ |
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#define LEON_IRQMASK_R 0x0000fffe /* bit 15- 1 of lregs.irqmask */ |
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#define LEON_IRQPRIO_R 0xfffe0000 /* bit 31-17 of lregs.irqmask */ |
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#define LEON_MCFG2_SRAMDIS 0x00002000 |
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#define LEON_MCFG2_SDRAMEN 0x00004000 |
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#define LEON_MCFG2_SRAMBANKSZ 0x00001e00 /* [12-9] */ |
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#define LEON_MCFG2_SRAMBANKSZ_SHIFT 9 |
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#define LEON_MCFG2_SDRAMBANKSZ 0x03800000 /* [25-23] */ |
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#define LEON_MCFG2_SDRAMBANKSZ_SHIFT 23 |
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#define LEON_TCNT0_MASK 0x7fffff |
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#define ASI_LEON3_SYSCTRL 0x02 |
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#define ASI_LEON3_SYSCTRL_ICFG 0x08 |
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#define ASI_LEON3_SYSCTRL_DCFG 0x0c |
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#define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1 << 27) |
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#define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1 << ((c >> 20) & 0xf)) |
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#ifndef __ASSEMBLY__ |
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/* do a physical address bypass write, i.e. for 0x80000000 */ |
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static inline void leon_store_reg(unsigned long paddr, unsigned long value) |
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{ |
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__asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr), |
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"i"(ASI_LEON_BYPASS) : "memory"); |
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} |
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/* do a physical address bypass load, i.e. for 0x80000000 */ |
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static inline unsigned long leon_load_reg(unsigned long paddr) |
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{ |
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unsigned long retval; |
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__asm__ __volatile__("lda [%1] %2, %0\n\t" : |
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"=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS)); |
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return retval; |
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} |
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/* macro access for leon_load_reg() and leon_store_reg() */ |
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#define LEON3_BYPASS_LOAD_PA(x) (leon_load_reg((unsigned long)(x))) |
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#define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v))) |
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#define LEON_BYPASS_LOAD_PA(x) leon_load_reg((unsigned long)(x)) |
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#define LEON_BYPASS_STORE_PA(x, v) leon_store_reg((unsigned long)(x), (unsigned long)(v)) |
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void leon_switch_mm(void); |
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void leon_init_IRQ(void); |
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static inline unsigned long sparc_leon3_get_dcachecfg(void) |
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{ |
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unsigned int retval; |
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__asm__ __volatile__("lda [%1] %2, %0\n\t" : |
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"=r"(retval) : |
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"r"(ASI_LEON3_SYSCTRL_DCFG), |
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"i"(ASI_LEON3_SYSCTRL)); |
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return retval; |
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} |
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/* enable snooping */ |
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static inline void sparc_leon3_enable_snooping(void) |
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{ |
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__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" |
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"set 0x800000, %%l2\n\t" |
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"or %%l2, %%l1, %%l2\n\t" |
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"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); |
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}; |
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static inline int sparc_leon3_snooping_enabled(void) |
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{ |
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u32 cctrl; |
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__asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl)); |
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return ((cctrl >> 23) & 1) && ((cctrl >> 17) & 1); |
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}; |
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static inline void sparc_leon3_disable_cache(void) |
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{ |
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__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" |
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"set 0x00000f, %%l2\n\t" |
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"andn %%l2, %%l1, %%l2\n\t" |
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"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); |
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}; |
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static inline unsigned long sparc_leon3_asr17(void) |
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{ |
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u32 asr17; |
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__asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17)); |
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return asr17; |
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}; |
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static inline int sparc_leon3_cpuid(void) |
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{ |
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return sparc_leon3_asr17() >> 28; |
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} |
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#endif /*!__ASSEMBLY__*/ |
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#ifdef CONFIG_SMP |
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# define LEON3_IRQ_IPI_DEFAULT 13 |
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# define LEON3_IRQ_TICKER (leon3_gptimer_irq) |
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# define LEON3_IRQ_CROSS_CALL 15 |
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#endif |
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#if defined(PAGE_SIZE_LEON_8K) |
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#define LEON_PAGE_SIZE_LEON 1 |
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#elif defined(PAGE_SIZE_LEON_16K) |
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#define LEON_PAGE_SIZE_LEON 2) |
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#else |
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#define LEON_PAGE_SIZE_LEON 0 |
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#endif |
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#if LEON_PAGE_SIZE_LEON == 0 |
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/* [ 8, 6, 6 ] + 12 */ |
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#define LEON_PGD_SH 24 |
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#define LEON_PGD_M 0xff |
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#define LEON_PMD_SH 18 |
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#define LEON_PMD_SH_V (LEON_PGD_SH-2) |
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#define LEON_PMD_M 0x3f |
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#define LEON_PTE_SH 12 |
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#define LEON_PTE_M 0x3f |
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#elif LEON_PAGE_SIZE_LEON == 1 |
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/* [ 7, 6, 6 ] + 13 */ |
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#define LEON_PGD_SH 25 |
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#define LEON_PGD_M 0x7f |
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#define LEON_PMD_SH 19 |
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#define LEON_PMD_SH_V (LEON_PGD_SH-1) |
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#define LEON_PMD_M 0x3f |
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#define LEON_PTE_SH 13 |
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#define LEON_PTE_M 0x3f |
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#elif LEON_PAGE_SIZE_LEON == 2 |
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/* [ 6, 6, 6 ] + 14 */ |
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#define LEON_PGD_SH 26 |
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#define LEON_PGD_M 0x3f |
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#define LEON_PMD_SH 20 |
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#define LEON_PMD_SH_V (LEON_PGD_SH-0) |
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#define LEON_PMD_M 0x3f |
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#define LEON_PTE_SH 14 |
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#define LEON_PTE_M 0x3f |
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#elif LEON_PAGE_SIZE_LEON == 3 |
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/* [ 4, 7, 6 ] + 15 */ |
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#define LEON_PGD_SH 28 |
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#define LEON_PGD_M 0x0f |
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#define LEON_PMD_SH 21 |
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#define LEON_PMD_SH_V (LEON_PGD_SH-0) |
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#define LEON_PMD_M 0x7f |
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#define LEON_PTE_SH 15 |
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#define LEON_PTE_M 0x3f |
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#else |
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#error cannot determine LEON_PAGE_SIZE_LEON |
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#endif |
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#define LEON3_XCCR_SETS_MASK 0x07000000UL |
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#define LEON3_XCCR_SSIZE_MASK 0x00f00000UL |
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#define LEON2_CCR_DSETS_MASK 0x03000000UL |
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#define LEON2_CFG_SSIZE_MASK 0x00007000UL |
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#ifndef __ASSEMBLY__ |
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struct vm_area_struct; |
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unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr); |
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void leon_flush_icache_all(void); |
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void leon_flush_dcache_all(void); |
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void leon_flush_cache_all(void); |
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void leon_flush_tlb_all(void); |
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extern int leon_flush_during_switch; |
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int leon_flush_needed(void); |
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void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); |
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/* struct that hold LEON3 cache configuration registers */ |
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struct leon3_cacheregs { |
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unsigned long ccr; /* 0x00 - Cache Control Register */ |
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unsigned long iccr; /* 0x08 - Instruction Cache Configuration Register */ |
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unsigned long dccr; /* 0x0c - Data Cache Configuration Register */ |
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}; |
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#include <linux/irq.h> |
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#include <linux/interrupt.h> |
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struct device_node; |
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struct task_struct; |
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unsigned int leon_build_device_irq(unsigned int real_irq, |
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irq_flow_handler_t flow_handler, |
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const char *name, int do_ack); |
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void leon_update_virq_handling(unsigned int virq, |
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irq_flow_handler_t flow_handler, |
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const char *name, int do_ack); |
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void leon_init_timers(void); |
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void leon_node_init(struct device_node *dp, struct device_node ***nextp); |
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void init_leon(void); |
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void poke_leonsparc(void); |
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void leon3_getCacheRegs(struct leon3_cacheregs *regs); |
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extern int leon3_ticker_irq; |
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#ifdef CONFIG_SMP |
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int leon_smp_nrcpus(void); |
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void leon_clear_profile_irq(int cpu); |
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void leon_smp_done(void); |
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void leon_boot_cpus(void); |
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int leon_boot_one_cpu(int i, struct task_struct *); |
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void leon_init_smp(void); |
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void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu); |
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irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused); |
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extern unsigned int smpleon_ipi[]; |
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extern unsigned int linux_trap_ipi15_leon[]; |
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extern int leon_ipi_irq; |
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#endif /* CONFIG_SMP */ |
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#endif /* __ASSEMBLY__ */ |
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/* macros used in leon_mm.c */ |
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#define PFN(x) ((x) >> PAGE_SHIFT) |
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#define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base))) |
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#define _SRMMU_PTE_PMASK_LEON 0xffffffff |
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/* |
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* On LEON PCI Memory space is mapped 1:1 with physical address space. |
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* |
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* I/O space is located at low 64Kbytes in PCI I/O space. The I/O addresses |
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* are converted into CPU addresses to virtual addresses that are mapped with |
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* MMU to the PCI Host PCI I/O space window which are translated to the low |
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* 64Kbytes by the Host controller. |
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*/ |
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#endif
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