sparc,leon: CONFIG_SPARC_LEON option and leon specific files.
The macro CONFIG_SPARC_LEON will shield, if undefined, the sun-sparc code from LEON specific code. In particular include/asm/leon.h will get empty through #ifdef and leon_kernel.c and leon_mm.c will not be compiled. Signed-off-by: Konrad Eisele <konrad@gaisler.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Konrad Eisele
David S. Miller
parent
8abf919600
commit
5213a78029
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@ -437,6 +437,17 @@ config SERIAL_CONSOLE
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If unsure, say N.
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config SPARC_LEON
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bool "Sparc Leon processor family"
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depends on SPARC32
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---help---
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If you say Y here if you are running on a SPARC-LEON processor.
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The LEON processor is a synthesizable VHDL model of the
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SPARC-v8 standard. LEON is part of the GRLIB collection of
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IP cores that are distributed under GPL. GRLIB can be downloaded
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from www.gaisler.com. You can download a sparc-linux cross-compilation
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toolchain at www.gaisler.com.
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endmenu
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menu "Bus options (PCI etc.)"
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@ -0,0 +1,362 @@
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/*
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* Copyright (C) 2004 Konrad Eisele (eiselekd@web.de,konrad@gaisler.com) Gaisler Research
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* Copyright (C) 2004 Stefan Holst (mail@s-holst.de) Uni-Stuttgart
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* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
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* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) 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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#ifdef CONFIG_SPARC_LEON
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#define ASI_LEON_NOCACHE 0x01
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#define ASI_LEON_DCACHE_MISS 0x1
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#define ASI_LEON_CACHEREGS 0x02
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#define ASI_LEON_IFLUSH 0x10
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#define ASI_LEON_DFLUSH 0x11
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#define ASI_LEON_MMUFLUSH 0x18
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#define ASI_LEON_MMUREGS 0x19
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#define ASI_LEON_BYPASS 0x1c
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#define ASI_LEON_FLUSH_PAGE 0x10
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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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/*
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* Interrupt Sources
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*
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* The interrupt source numbers directly map to the trap type and to
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* the bits used in the Interrupt Clear, Interrupt Force, Interrupt Mask,
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* and the Interrupt Pending Registers.
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*/
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#define LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR 1
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#define LEON_INTERRUPT_UART_1_RX_TX 2
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#define LEON_INTERRUPT_UART_0_RX_TX 3
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#define LEON_INTERRUPT_EXTERNAL_0 4
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#define LEON_INTERRUPT_EXTERNAL_1 5
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#define LEON_INTERRUPT_EXTERNAL_2 6
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#define LEON_INTERRUPT_EXTERNAL_3 7
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#define LEON_INTERRUPT_TIMER1 8
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#define LEON_INTERRUPT_TIMER2 9
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#define LEON_INTERRUPT_EMPTY1 10
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#define LEON_INTERRUPT_EMPTY2 11
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#define LEON_INTERRUPT_OPEN_ETH 12
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#define LEON_INTERRUPT_EMPTY4 13
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#define LEON_INTERRUPT_EMPTY5 14
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#define LEON_INTERRUPT_EMPTY6 15
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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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/* leon uart register definitions */
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#define LEON_OFF_UDATA 0x0
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#define LEON_OFF_USTAT 0x4
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#define LEON_OFF_UCTRL 0x8
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#define LEON_OFF_USCAL 0xc
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#define LEON_UCTRL_RE 0x01
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#define LEON_UCTRL_TE 0x02
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#define LEON_UCTRL_RI 0x04
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#define LEON_UCTRL_TI 0x08
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#define LEON_UCTRL_PS 0x10
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#define LEON_UCTRL_PE 0x20
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#define LEON_UCTRL_FL 0x40
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#define LEON_UCTRL_LB 0x80
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#define LEON_USTAT_DR 0x01
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#define LEON_USTAT_TS 0x02
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#define LEON_USTAT_TH 0x04
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#define LEON_USTAT_BR 0x08
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#define LEON_USTAT_OV 0x10
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#define LEON_USTAT_PE 0x20
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#define LEON_USTAT_FE 0x40
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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 LEON_USTAT_ERROR (LEON_USTAT_OV | LEON_USTAT_PE | LEON_USTAT_FE)
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/* no break yet */
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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 virtual address read without cache */
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static inline unsigned long leon_readnobuffer_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_NOCACHE));
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return retval;
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}
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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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extern inline void leon_srmmu_disabletlb(void)
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{
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unsigned int retval;
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__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
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"i"(ASI_LEON_MMUREGS));
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retval |= LEON_CNR_CTRL_TLBDIS;
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__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
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"i"(ASI_LEON_MMUREGS) : "memory");
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}
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extern inline void leon_srmmu_enabletlb(void)
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{
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unsigned int retval;
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__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
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"i"(ASI_LEON_MMUREGS));
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retval = retval & ~LEON_CNR_CTRL_TLBDIS;
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__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
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"i"(ASI_LEON_MMUREGS) : "memory");
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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 LEON3_BYPASS_ANDIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) & v)
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#define LEON3_BYPASS_ORIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) | 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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#define LEON_REGLOAD_PA(x) leon_load_reg((unsigned long)(x)+LEON_PREGS)
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#define LEON_REGSTORE_PA(x, v) leon_store_reg((unsigned long)(x)+LEON_PREGS, (unsigned long)(v))
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#define LEON_REGSTORE_OR_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) | (unsigned long)(v))
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#define LEON_REGSTORE_AND_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) & (unsigned long)(v))
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/* macro access for leon_readnobuffer_reg() */
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#define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x))
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extern void sparc_leon_eirq_register(int eirq);
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extern void leon_init(void);
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extern void leon_switch_mm(void);
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extern void leon_init_IRQ(void);
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extern unsigned long last_valid_pfn;
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extern 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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extern 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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extern 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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#endif /*!__ASSEMBLY__*/
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#ifdef CONFIG_SMP
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# define LEON3_IRQ_RESCHEDULE 13
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# define LEON3_IRQ_TICKER (leon_percpu_timer_dev[0].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 PAGE_MIN_SHIFT (12)
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#define PAGE_MIN_SIZE (1UL << PAGE_MIN_SHIFT)
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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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extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
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extern void leon_flush_icache_all(void);
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extern void leon_flush_dcache_all(void);
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extern void leon_flush_cache_all(void);
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extern void leon_flush_tlb_all(void);
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extern int leon_flush_during_switch;
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extern int leon_flush_needed(void);
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struct vm_area_struct;
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extern void leon_flush_icache_all(void);
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extern void leon_flush_dcache_all(void);
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extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
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extern void leon_flush_cache_all(void);
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extern void leon_flush_tlb_all(void);
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extern int leon_flush_during_switch;
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extern int leon_flush_needed(void);
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extern 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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/* struct that hold LEON2 cache configuration register
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* & configuration register
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*/
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struct leon2_cacheregs {
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unsigned long ccr, cfg;
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};
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#ifdef __KERNEL__
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#include <linux/interrupt.h>
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struct device_node;
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extern int sparc_leon_eirq_get(int eirq, int cpu);
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extern irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id);
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extern void sparc_leon_eirq_register(int eirq);
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extern void leon_clear_clock_irq(void);
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extern void leon_load_profile_irq(int cpu, unsigned int limit);
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extern void leon_init_timers(irq_handler_t counter_fn);
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extern void leon_clear_clock_irq(void);
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extern void leon_load_profile_irq(int cpu, unsigned int limit);
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extern void leon_trans_init(struct device_node *dp);
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extern void leon_node_init(struct device_node *dp, struct device_node ***nextp);
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extern void leon_init_IRQ(void);
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extern void leon_init(void);
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extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
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extern void init_leon(void);
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extern void poke_leonsparc(void);
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extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
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extern int leon_flush_needed(void);
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extern void leon_switch_mm(void);
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extern int srmmu_swprobe_trace;
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#endif /* __KERNEL__ */
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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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#else /* defined(CONFIG_SPARC_LEON) */
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/* nop definitions for !LEON case */
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#define leon_init() do {} while (0)
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#define leon_switch_mm() do {} while (0)
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#define leon_init_IRQ() do {} while (0)
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#define init_leon() do {} while (0)
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#endif /* !defined(CONFIG_SPARC_LEON) */
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#endif
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@ -0,0 +1,263 @@
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/*
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*Copyright (C) 2004 Konrad Eisele (eiselekd@web.de,konrad@gaisler.com), Gaisler Research
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*Copyright (C) 2004 Stefan Holst (mail@s-holst.de), Uni-Stuttgart
|
||||
*Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com),Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
|
||||
*/
|
||||
|
||||
#ifndef LEON_AMBA_H_INCLUDE
|
||||
#define LEON_AMBA_H_INCLUDE
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
struct amba_prom_registers {
|
||||
unsigned int phys_addr; /* The physical address of this register */
|
||||
unsigned int reg_size; /* How many bytes does this register take up? */
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
/*
|
||||
* The following defines the bits in the LEON UART Status Registers.
|
||||
*/
|
||||
|
||||
#define LEON_REG_UART_STATUS_DR 0x00000001 /* Data Ready */
|
||||
#define LEON_REG_UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */
|
||||
#define LEON_REG_UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */
|
||||
#define LEON_REG_UART_STATUS_BR 0x00000008 /* Break Error */
|
||||
#define LEON_REG_UART_STATUS_OE 0x00000010 /* RX Overrun Error */
|
||||
#define LEON_REG_UART_STATUS_PE 0x00000020 /* RX Parity Error */
|
||||
#define LEON_REG_UART_STATUS_FE 0x00000040 /* RX Framing Error */
|
||||
#define LEON_REG_UART_STATUS_ERR 0x00000078 /* Error Mask */
|
||||
|
||||
/*
|
||||
* The following defines the bits in the LEON UART Ctrl Registers.
|
||||
*/
|
||||
|
||||
#define LEON_REG_UART_CTRL_RE 0x00000001 /* Receiver enable */
|
||||
#define LEON_REG_UART_CTRL_TE 0x00000002 /* Transmitter enable */
|
||||
#define LEON_REG_UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */
|
||||
#define LEON_REG_UART_CTRL_TI 0x00000008 /* Transmitter irq */
|
||||
#define LEON_REG_UART_CTRL_PS 0x00000010 /* Parity select */
|
||||
#define LEON_REG_UART_CTRL_PE 0x00000020 /* Parity enable */
|
||||
#define LEON_REG_UART_CTRL_FL 0x00000040 /* Flow control enable */
|
||||
#define LEON_REG_UART_CTRL_LB 0x00000080 /* Loop Back enable */
|
||||
|
||||
#define LEON3_GPTIMER_EN 1
|
||||
#define LEON3_GPTIMER_RL 2
|
||||
#define LEON3_GPTIMER_LD 4
|
||||
#define LEON3_GPTIMER_IRQEN 8
|
||||
#define LEON3_GPTIMER_SEPIRQ 8
|
||||
|
||||
#define LEON23_REG_TIMER_CONTROL_EN 0x00000001 /* 1 = enable counting */
|
||||
/* 0 = hold scalar and counter */
|
||||
#define LEON23_REG_TIMER_CONTROL_RL 0x00000002 /* 1 = reload at 0 */
|
||||
/* 0 = stop at 0 */
|
||||
#define LEON23_REG_TIMER_CONTROL_LD 0x00000004 /* 1 = load counter */
|
||||
/* 0 = no function */
|
||||
#define LEON23_REG_TIMER_CONTROL_IQ 0x00000008 /* 1 = irq enable */
|
||||
/* 0 = no function */
|
||||
|
||||
/*
|
||||
* The following defines the bits in the LEON PS/2 Status Registers.
|
||||
*/
|
||||
|
||||
#define LEON_REG_PS2_STATUS_DR 0x00000001 /* Data Ready */
|
||||
#define LEON_REG_PS2_STATUS_PE 0x00000002 /* Parity error */
|
||||
#define LEON_REG_PS2_STATUS_FE 0x00000004 /* Framing error */
|
||||
#define LEON_REG_PS2_STATUS_KI 0x00000008 /* Keyboard inhibit */
|
||||
#define LEON_REG_PS2_STATUS_RF 0x00000010 /* RX buffer full */
|
||||
#define LEON_REG_PS2_STATUS_TF 0x00000020 /* TX buffer full */
|
||||
|
||||
/*
|
||||
* The following defines the bits in the LEON PS/2 Ctrl Registers.
|
||||
*/
|
||||
|
||||
#define LEON_REG_PS2_CTRL_RE 0x00000001 /* Receiver enable */
|
||||
#define LEON_REG_PS2_CTRL_TE 0x00000002 /* Transmitter enable */
|
||||
#define LEON_REG_PS2_CTRL_RI 0x00000004 /* Keyboard receive irq */
|
||||
#define LEON_REG_PS2_CTRL_TI 0x00000008 /* Keyboard transmit irq */
|
||||
|
||||
#define LEON3_IRQMPSTATUS_CPUNR 28
|
||||
#define LEON3_IRQMPSTATUS_BROADCAST 27
|
||||
|
||||
#define GPTIMER_CONFIG_IRQNT(a) (((a) >> 3) & 0x1f)
|
||||
#define GPTIMER_CONFIG_ISSEP(a) ((a) & (1 << 8))
|
||||
#define GPTIMER_CONFIG_NTIMERS(a) ((a) & (0x7))
|
||||
#define LEON3_GPTIMER_CTRL_PENDING 0x10
|
||||
#define LEON3_GPTIMER_CONFIG_NRTIMERS(c) ((c)->config & 0x7)
|
||||
#define LEON3_GPTIMER_CTRL_ISPENDING(r) (((r)&LEON3_GPTIMER_CTRL_PENDING) ? 1 : 0)
|
||||
|
||||
#ifdef CONFIG_SPARC_LEON
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
struct leon3_irqctrl_regs_map {
|
||||
u32 ilevel;
|
||||
u32 ipend;
|
||||
u32 iforce;
|
||||
u32 iclear;
|
||||
u32 mpstatus;
|
||||
u32 mpbroadcast;
|
||||
u32 notused02;
|
||||
u32 notused03;
|
||||
u32 notused10;
|
||||
u32 notused11;
|
||||
u32 notused12;
|
||||
u32 notused13;
|
||||
u32 notused20;
|
||||
u32 notused21;
|
||||
u32 notused22;
|
||||
u32 notused23;
|
||||
u32 mask[16];
|
||||
u32 force[16];
|
||||
/* Extended IRQ registers */
|
||||
u32 intid[16]; /* 0xc0 */
|
||||
};
|
||||
|
||||
struct leon3_apbuart_regs_map {
|
||||
u32 data;
|
||||
u32 status;
|
||||
u32 ctrl;
|
||||
u32 scaler;
|
||||
};
|
||||
|
||||
struct leon3_gptimerelem_regs_map {
|
||||
u32 val;
|
||||
u32 rld;
|
||||
u32 ctrl;
|
||||
u32 unused;
|
||||
};
|
||||
|
||||
struct leon3_gptimer_regs_map {
|
||||
u32 scalar;
|
||||
u32 scalar_reload;
|
||||
u32 config;
|
||||
u32 unused;
|
||||
struct leon3_gptimerelem_regs_map e[8];
|
||||
};
|
||||
|
||||
/*
|
||||
* Types and structure used for AMBA Plug & Play bus scanning
|
||||
*/
|
||||
|
||||
#define AMBA_MAXAPB_DEVS 64
|
||||
#define AMBA_MAXAPB_DEVS_PERBUS 16
|
||||
|
||||
struct amba_device_table {
|
||||
int devnr; /* number of devices on AHB or APB bus */
|
||||
unsigned int *addr[16]; /* addresses to the devices configuration tables */
|
||||
unsigned int allocbits[1]; /* 0=unallocated, 1=allocated driver */
|
||||
};
|
||||
|
||||
struct amba_apbslv_device_table {
|
||||
int devnr; /* number of devices on AHB or APB bus */
|
||||
unsigned int *addr[AMBA_MAXAPB_DEVS]; /* addresses to the devices configuration tables */
|
||||
unsigned int apbmst[AMBA_MAXAPB_DEVS]; /* apb master if a entry is a apb slave */
|
||||
unsigned int apbmstidx[AMBA_MAXAPB_DEVS]; /* apb master idx if a entry is a apb slave */
|
||||
unsigned int allocbits[4]; /* 0=unallocated, 1=allocated driver */
|
||||
};
|
||||
|
||||
struct amba_confarea_type {
|
||||
struct amba_confarea_type *next;/* next bus in chain */
|
||||
struct amba_device_table ahbmst;
|
||||
struct amba_device_table ahbslv;
|
||||
struct amba_apbslv_device_table apbslv;
|
||||
unsigned int apbmst;
|
||||
};
|
||||
|
||||
/* collect apb slaves */
|
||||
struct amba_apb_device {
|
||||
unsigned int start, irq, bus_id;
|
||||
struct amba_confarea_type *bus;
|
||||
};
|
||||
|
||||
/* collect ahb slaves */
|
||||
struct amba_ahb_device {
|
||||
unsigned int start[4], irq, bus_id;
|
||||
struct amba_confarea_type *bus;
|
||||
};
|
||||
|
||||
struct device_node;
|
||||
void _amba_init(struct device_node *dp, struct device_node ***nextp);
|
||||
|
||||
extern struct leon3_irqctrl_regs_map *leon3_irqctrl_regs;
|
||||
extern struct leon3_gptimer_regs_map *leon3_gptimer_regs;
|
||||
extern struct amba_apb_device leon_percpu_timer_dev[16];
|
||||
extern int leondebug_irq_disable;
|
||||
extern int leon_debug_irqout;
|
||||
extern unsigned long leon3_gptimer_irq;
|
||||
extern unsigned int sparc_leon_eirq;
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
#define LEON3_IO_AREA 0xfff00000
|
||||
#define LEON3_CONF_AREA 0xff000
|
||||
#define LEON3_AHB_SLAVE_CONF_AREA (1 << 11)
|
||||
|
||||
#define LEON3_AHB_CONF_WORDS 8
|
||||
#define LEON3_APB_CONF_WORDS 2
|
||||
#define LEON3_AHB_MASTERS 16
|
||||
#define LEON3_AHB_SLAVES 16
|
||||
#define LEON3_APB_SLAVES 16
|
||||
#define LEON3_APBUARTS 8
|
||||
|
||||
/* Vendor codes */
|
||||
#define VENDOR_GAISLER 1
|
||||
#define VENDOR_PENDER 2
|
||||
#define VENDOR_ESA 4
|
||||
#define VENDOR_OPENCORES 8
|
||||
|
||||
/* Gaisler Research device id's */
|
||||
#define GAISLER_LEON3 0x003
|
||||
#define GAISLER_LEON3DSU 0x004
|
||||
#define GAISLER_ETHAHB 0x005
|
||||
#define GAISLER_APBMST 0x006
|
||||
#define GAISLER_AHBUART 0x007
|
||||
#define GAISLER_SRCTRL 0x008
|
||||
#define GAISLER_SDCTRL 0x009
|
||||
#define GAISLER_APBUART 0x00C
|
||||
#define GAISLER_IRQMP 0x00D
|
||||
#define GAISLER_AHBRAM 0x00E
|
||||
#define GAISLER_GPTIMER 0x011
|
||||
#define GAISLER_PCITRG 0x012
|
||||
#define GAISLER_PCISBRG 0x013
|
||||
#define GAISLER_PCIFBRG 0x014
|
||||
#define GAISLER_PCITRACE 0x015
|
||||
#define GAISLER_PCIDMA 0x016
|
||||
#define GAISLER_AHBTRACE 0x017
|
||||
#define GAISLER_ETHDSU 0x018
|
||||
#define GAISLER_PIOPORT 0x01A
|
||||
#define GAISLER_GRGPIO 0x01A
|
||||
#define GAISLER_AHBJTAG 0x01c
|
||||
#define GAISLER_ETHMAC 0x01D
|
||||
#define GAISLER_AHB2AHB 0x020
|
||||
#define GAISLER_USBDC 0x021
|
||||
#define GAISLER_ATACTRL 0x024
|
||||
#define GAISLER_DDRSPA 0x025
|
||||
#define GAISLER_USBEHC 0x026
|
||||
#define GAISLER_USBUHC 0x027
|
||||
#define GAISLER_I2CMST 0x028
|
||||
#define GAISLER_SPICTRL 0x02D
|
||||
#define GAISLER_DDR2SPA 0x02E
|
||||
#define GAISLER_SPIMCTRL 0x045
|
||||
#define GAISLER_LEON4 0x048
|
||||
#define GAISLER_LEON4DSU 0x049
|
||||
#define GAISLER_AHBSTAT 0x052
|
||||
#define GAISLER_FTMCTRL 0x054
|
||||
#define GAISLER_KBD 0x060
|
||||
#define GAISLER_VGA 0x061
|
||||
#define GAISLER_SVGA 0x063
|
||||
#define GAISLER_GRSYSMON 0x066
|
||||
#define GAISLER_GRACECTRL 0x067
|
||||
|
||||
#define GAISLER_L2TIME 0xffd /* internal device: leon2 timer */
|
||||
#define GAISLER_L2C 0xffe /* internal device: leon2compat */
|
||||
#define GAISLER_PLUGPLAY 0xfff /* internal device: plug & play configarea */
|
||||
|
||||
#define amba_vendor(x) (((x) >> 24) & 0xff)
|
||||
|
||||
#define amba_device(x) (((x) >> 12) & 0xfff)
|
||||
|
||||
#endif /* !defined(CONFIG_SPARC_LEON) */
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,203 @@
|
|||
/*
|
||||
* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
|
||||
* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <asm/oplib.h>
|
||||
#include <asm/timer.h>
|
||||
#include <asm/prom.h>
|
||||
#include <asm/leon.h>
|
||||
#include <asm/leon_amba.h>
|
||||
|
||||
#include "prom.h"
|
||||
#include "irq.h"
|
||||
|
||||
struct leon3_irqctrl_regs_map *leon3_irqctrl_regs; /* interrupt controller base address, initialized by amba_init() */
|
||||
struct leon3_gptimer_regs_map *leon3_gptimer_regs; /* timer controller base address, initialized by amba_init() */
|
||||
struct amba_apb_device leon_percpu_timer_dev[16];
|
||||
|
||||
int leondebug_irq_disable;
|
||||
int leon_debug_irqout;
|
||||
static int dummy_master_l10_counter;
|
||||
|
||||
unsigned long leon3_gptimer_irq; /* interrupt controller irq number, initialized by amba_init() */
|
||||
unsigned int sparc_leon_eirq;
|
||||
#define LEON_IMASK ((&leon3_irqctrl_regs->mask[0]))
|
||||
|
||||
/* Return the IRQ of the pending IRQ on the extended IRQ controller */
|
||||
int sparc_leon_eirq_get(int eirq, int cpu)
|
||||
{
|
||||
return LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->intid[cpu]) & 0x1f;
|
||||
}
|
||||
|
||||
irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id)
|
||||
{
|
||||
printk(KERN_ERR "sparc_leon_eirq_isr: ERROR EXTENDED IRQ\n");
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/* The extended IRQ controller has been found, this function registers it */
|
||||
void sparc_leon_eirq_register(int eirq)
|
||||
{
|
||||
int irq;
|
||||
|
||||
/* Register a "BAD" handler for this interrupt, it should never happen */
|
||||
irq = request_irq(eirq, sparc_leon_eirq_isr,
|
||||
(IRQF_DISABLED | SA_STATIC_ALLOC), "extirq", NULL);
|
||||
|
||||
if (irq) {
|
||||
printk(KERN_ERR
|
||||
"sparc_leon_eirq_register: unable to attach IRQ%d\n",
|
||||
eirq);
|
||||
} else {
|
||||
sparc_leon_eirq = eirq;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static inline unsigned long get_irqmask(unsigned int irq)
|
||||
{
|
||||
unsigned long mask;
|
||||
|
||||
if (!irq || ((irq > 0xf) && !sparc_leon_eirq)
|
||||
|| ((irq > 0x1f) && sparc_leon_eirq)) {
|
||||
printk(KERN_ERR
|
||||
"leon_get_irqmask: false irq number: %d\n", irq);
|
||||
mask = 0;
|
||||
} else {
|
||||
mask = LEON_HARD_INT(irq);
|
||||
}
|
||||
return mask;
|
||||
}
|
||||
|
||||
static void leon_enable_irq(unsigned int irq_nr)
|
||||
{
|
||||
unsigned long mask, flags;
|
||||
mask = get_irqmask(irq_nr);
|
||||
local_irq_save(flags);
|
||||
LEON3_BYPASS_STORE_PA(LEON_IMASK,
|
||||
(LEON3_BYPASS_LOAD_PA(LEON_IMASK) | (mask)));
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
static void leon_disable_irq(unsigned int irq_nr)
|
||||
{
|
||||
unsigned long mask, flags;
|
||||
mask = get_irqmask(irq_nr);
|
||||
local_irq_save(flags);
|
||||
LEON3_BYPASS_STORE_PA(LEON_IMASK,
|
||||
(LEON3_BYPASS_LOAD_PA(LEON_IMASK) & ~(mask)));
|
||||
local_irq_restore(flags);
|
||||
|
||||
}
|
||||
|
||||
void __init leon_init_timers(irq_handler_t counter_fn)
|
||||
{
|
||||
int irq;
|
||||
|
||||
leondebug_irq_disable = 0;
|
||||
leon_debug_irqout = 0;
|
||||
master_l10_counter = (unsigned int *)&dummy_master_l10_counter;
|
||||
dummy_master_l10_counter = 0;
|
||||
|
||||
if (leon3_gptimer_regs && leon3_irqctrl_regs) {
|
||||
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].val, 0);
|
||||
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].rld,
|
||||
(((1000000 / 100) - 1)));
|
||||
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0);
|
||||
|
||||
} else {
|
||||
printk(KERN_ERR "No Timer/irqctrl found\n");
|
||||
BUG();
|
||||
}
|
||||
|
||||
irq = request_irq(leon3_gptimer_irq,
|
||||
counter_fn,
|
||||
(IRQF_DISABLED | SA_STATIC_ALLOC), "timer", NULL);
|
||||
|
||||
if (irq) {
|
||||
printk(KERN_ERR "leon_time_init: unable to attach IRQ%d\n",
|
||||
LEON_INTERRUPT_TIMER1);
|
||||
prom_halt();
|
||||
}
|
||||
|
||||
if (leon3_gptimer_regs) {
|
||||
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl,
|
||||
LEON3_GPTIMER_EN |
|
||||
LEON3_GPTIMER_RL |
|
||||
LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN);
|
||||
}
|
||||
}
|
||||
|
||||
void leon_clear_clock_irq(void)
|
||||
{
|
||||
}
|
||||
|
||||
void leon_load_profile_irq(int cpu, unsigned int limit)
|
||||
{
|
||||
BUG();
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
void __init leon_trans_init(struct device_node *dp)
|
||||
{
|
||||
if (strcmp(dp->type, "cpu") == 0 && strcmp(dp->name, "<NULL>") == 0) {
|
||||
struct property *p;
|
||||
p = of_find_property(dp, "mid", (void *)0);
|
||||
if (p) {
|
||||
int mid;
|
||||
dp->name = prom_early_alloc(5 + 1);
|
||||
memcpy(&mid, p->value, p->length);
|
||||
sprintf((char *)dp->name, "cpu%.2d", mid);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void __initdata (*prom_amba_init)(struct device_node *dp, struct device_node ***nextp) = 0;
|
||||
|
||||
void __init leon_node_init(struct device_node *dp, struct device_node ***nextp)
|
||||
{
|
||||
if (prom_amba_init &&
|
||||
strcmp(dp->type, "ambapp") == 0 &&
|
||||
strcmp(dp->name, "ambapp0") == 0) {
|
||||
prom_amba_init(dp, nextp);
|
||||
}
|
||||
}
|
||||
|
||||
void __init leon_init_IRQ(void)
|
||||
{
|
||||
sparc_init_timers = leon_init_timers;
|
||||
|
||||
BTFIXUPSET_CALL(enable_irq, leon_enable_irq, BTFIXUPCALL_NORM);
|
||||
BTFIXUPSET_CALL(disable_irq, leon_disable_irq, BTFIXUPCALL_NORM);
|
||||
BTFIXUPSET_CALL(enable_pil_irq, leon_enable_irq, BTFIXUPCALL_NORM);
|
||||
BTFIXUPSET_CALL(disable_pil_irq, leon_disable_irq, BTFIXUPCALL_NORM);
|
||||
|
||||
BTFIXUPSET_CALL(clear_clock_irq, leon_clear_clock_irq,
|
||||
BTFIXUPCALL_NORM);
|
||||
BTFIXUPSET_CALL(load_profile_irq, leon_load_profile_irq,
|
||||
BTFIXUPCALL_NOP);
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
BTFIXUPSET_CALL(set_cpu_int, leon_set_cpu_int, BTFIXUPCALL_NORM);
|
||||
BTFIXUPSET_CALL(clear_cpu_int, leon_clear_ipi, BTFIXUPCALL_NORM);
|
||||
BTFIXUPSET_CALL(set_irq_udt, leon_set_udt, BTFIXUPCALL_NORM);
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
void __init leon_init(void)
|
||||
{
|
||||
prom_build_more = &leon_node_init;
|
||||
}
|
||||
|
|
@ -0,0 +1,260 @@
|
|||
/*
|
||||
* linux/arch/sparc/mm/leon_m.c
|
||||
*
|
||||
* Copyright (C) 2004 Konrad Eisele (eiselekd@web.de, konrad@gaisler.com) Gaisler Research
|
||||
* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
|
||||
* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
|
||||
*
|
||||
* do srmmu probe in software
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mm.h>
|
||||
#include <asm/asi.h>
|
||||
#include <asm/leon.h>
|
||||
#include <asm/tlbflush.h>
|
||||
|
||||
int leon_flush_during_switch = 1;
|
||||
int srmmu_swprobe_trace;
|
||||
|
||||
unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
|
||||
{
|
||||
|
||||
unsigned int ctxtbl;
|
||||
unsigned int pgd, pmd, ped;
|
||||
unsigned int ptr;
|
||||
unsigned int lvl, pte, paddrbase;
|
||||
unsigned int ctx;
|
||||
unsigned int paddr_calc;
|
||||
|
||||
paddrbase = 0;
|
||||
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: trace on\n");
|
||||
|
||||
ctxtbl = srmmu_get_ctable_ptr();
|
||||
if (!(ctxtbl)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: srmmu_get_ctable_ptr returned 0=>0\n");
|
||||
return 0;
|
||||
}
|
||||
if (!_pfn_valid(PFN(ctxtbl))) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO
|
||||
"swprobe: !_pfn_valid(%x)=>0\n",
|
||||
PFN(ctxtbl));
|
||||
return 0;
|
||||
}
|
||||
|
||||
ctx = srmmu_get_context();
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: --- ctx (%x) ---\n", ctx);
|
||||
|
||||
pgd = LEON_BYPASS_LOAD_PA(ctxtbl + (ctx * 4));
|
||||
|
||||
if (((pgd & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: pgd is entry level 3\n");
|
||||
lvl = 3;
|
||||
pte = pgd;
|
||||
paddrbase = pgd & _SRMMU_PTE_PMASK_LEON;
|
||||
goto ready;
|
||||
}
|
||||
if (((pgd & SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: pgd is invalid => 0\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: --- pgd (%x) ---\n", pgd);
|
||||
|
||||
ptr = (pgd & SRMMU_PTD_PMASK) << 4;
|
||||
ptr += ((((vaddr) >> LEON_PGD_SH) & LEON_PGD_M) * 4);
|
||||
if (!_pfn_valid(PFN(ptr)))
|
||||
return 0;
|
||||
|
||||
pmd = LEON_BYPASS_LOAD_PA(ptr);
|
||||
if (((pmd & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: pmd is entry level 2\n");
|
||||
lvl = 2;
|
||||
pte = pmd;
|
||||
paddrbase = pmd & _SRMMU_PTE_PMASK_LEON;
|
||||
goto ready;
|
||||
}
|
||||
if (((pmd & SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: pmd is invalid => 0\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: --- pmd (%x) ---\n", pmd);
|
||||
|
||||
ptr = (pmd & SRMMU_PTD_PMASK) << 4;
|
||||
ptr += (((vaddr >> LEON_PMD_SH) & LEON_PMD_M) * 4);
|
||||
if (!_pfn_valid(PFN(ptr))) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: !_pfn_valid(%x)=>0\n",
|
||||
PFN(ptr));
|
||||
return 0;
|
||||
}
|
||||
|
||||
ped = LEON_BYPASS_LOAD_PA(ptr);
|
||||
|
||||
if (((ped & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: ped is entry level 1\n");
|
||||
lvl = 1;
|
||||
pte = ped;
|
||||
paddrbase = ped & _SRMMU_PTE_PMASK_LEON;
|
||||
goto ready;
|
||||
}
|
||||
if (((ped & SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: ped is invalid => 0\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: --- ped (%x) ---\n", ped);
|
||||
|
||||
ptr = (ped & SRMMU_PTD_PMASK) << 4;
|
||||
ptr += (((vaddr >> LEON_PTE_SH) & LEON_PTE_M) * 4);
|
||||
if (!_pfn_valid(PFN(ptr)))
|
||||
return 0;
|
||||
|
||||
ptr = LEON_BYPASS_LOAD_PA(ptr);
|
||||
if (((ptr & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: ptr is entry level 0\n");
|
||||
lvl = 0;
|
||||
pte = ptr;
|
||||
paddrbase = ptr & _SRMMU_PTE_PMASK_LEON;
|
||||
goto ready;
|
||||
}
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: ptr is invalid => 0\n");
|
||||
return 0;
|
||||
|
||||
ready:
|
||||
switch (lvl) {
|
||||
case 0:
|
||||
paddr_calc =
|
||||
(vaddr & ~(-1 << LEON_PTE_SH)) | ((pte & ~0xff) << 4);
|
||||
break;
|
||||
case 1:
|
||||
paddr_calc =
|
||||
(vaddr & ~(-1 << LEON_PMD_SH)) | ((pte & ~0xff) << 4);
|
||||
break;
|
||||
case 2:
|
||||
paddr_calc =
|
||||
(vaddr & ~(-1 << LEON_PGD_SH)) | ((pte & ~0xff) << 4);
|
||||
break;
|
||||
default:
|
||||
case 3:
|
||||
paddr_calc = vaddr;
|
||||
break;
|
||||
}
|
||||
if (srmmu_swprobe_trace)
|
||||
printk(KERN_INFO "swprobe: padde %x\n", paddr_calc);
|
||||
if (paddr)
|
||||
*paddr = paddr_calc;
|
||||
return paddrbase;
|
||||
}
|
||||
|
||||
void leon_flush_icache_all(void)
|
||||
{
|
||||
__asm__ __volatile__(" flush "); /*iflush*/
|
||||
}
|
||||
|
||||
void leon_flush_dcache_all(void)
|
||||
{
|
||||
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
|
||||
"i"(ASI_LEON_DFLUSH) : "memory");
|
||||
}
|
||||
|
||||
void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page)
|
||||
{
|
||||
if (vma->vm_flags & VM_EXEC)
|
||||
leon_flush_icache_all();
|
||||
leon_flush_dcache_all();
|
||||
}
|
||||
|
||||
void leon_flush_cache_all(void)
|
||||
{
|
||||
__asm__ __volatile__(" flush "); /*iflush*/
|
||||
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
|
||||
"i"(ASI_LEON_DFLUSH) : "memory");
|
||||
}
|
||||
|
||||
void leon_flush_tlb_all(void)
|
||||
{
|
||||
leon_flush_cache_all();
|
||||
__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : : "r"(0x400),
|
||||
"i"(ASI_LEON_MMUFLUSH) : "memory");
|
||||
}
|
||||
|
||||
/* get all cache regs */
|
||||
void leon3_getCacheRegs(struct leon3_cacheregs *regs)
|
||||
{
|
||||
unsigned long ccr, iccr, dccr;
|
||||
|
||||
if (!regs)
|
||||
return;
|
||||
/* Get Cache regs from "Cache ASI" address 0x0, 0x8 and 0xC */
|
||||
__asm__ __volatile__("lda [%%g0] %3, %0\n\t"
|
||||
"mov 0x08, %%g1\n\t"
|
||||
"lda [%%g1] %3, %1\n\t"
|
||||
"mov 0x0c, %%g1\n\t"
|
||||
"lda [%%g1] %3, %2\n\t"
|
||||
: "=r"(ccr), "=r"(iccr), "=r"(dccr)
|
||||
/* output */
|
||||
: "i"(ASI_LEON_CACHEREGS) /* input */
|
||||
: "g1" /* clobber list */
|
||||
);
|
||||
regs->ccr = ccr;
|
||||
regs->iccr = iccr;
|
||||
regs->dccr = dccr;
|
||||
}
|
||||
|
||||
/* Due to virtual cache we need to check cache configuration if
|
||||
* it is possible to skip flushing in some cases.
|
||||
*
|
||||
* Leon2 and Leon3 differ in their way of telling cache information
|
||||
*
|
||||
*/
|
||||
int leon_flush_needed(void)
|
||||
{
|
||||
int flush_needed = -1;
|
||||
unsigned int ssize, sets;
|
||||
char *setStr[4] =
|
||||
{ "direct mapped", "2-way associative", "3-way associative",
|
||||
"4-way associative"
|
||||
};
|
||||
/* leon 3 */
|
||||
struct leon3_cacheregs cregs;
|
||||
leon3_getCacheRegs(&cregs);
|
||||
sets = (cregs.dccr & LEON3_XCCR_SETS_MASK) >> 24;
|
||||
/* (ssize=>realsize) 0=>1k, 1=>2k, 2=>4k, 3=>8k ... */
|
||||
ssize = 1 << ((cregs.dccr & LEON3_XCCR_SSIZE_MASK) >> 20);
|
||||
|
||||
printk(KERN_INFO "CACHE: %s cache, set size %dk\n",
|
||||
sets > 3 ? "unknown" : setStr[sets], ssize);
|
||||
if ((ssize <= (PAGE_SIZE / 1024)) && (sets == 0)) {
|
||||
/* Set Size <= Page size ==>
|
||||
flush on every context switch not needed. */
|
||||
flush_needed = 0;
|
||||
printk(KERN_INFO "CACHE: not flushing on every context switch\n");
|
||||
}
|
||||
return flush_needed;
|
||||
}
|
||||
|
||||
void leon_switch_mm(void)
|
||||
{
|
||||
flush_tlb_mm((void *)0);
|
||||
if (leon_flush_during_switch)
|
||||
leon_flush_cache_all();
|
||||
}
|
||||
Reference in New Issue