diff options
Diffstat (limited to 'include/asm-cris/arch-v10')
25 files changed, 9492 insertions, 0 deletions
diff --git a/include/asm-cris/arch-v10/bitops.h b/include/asm-cris/arch-v10/bitops.h new file mode 100644 index 00000000000..21b7ae8c9bb --- /dev/null +++ b/include/asm-cris/arch-v10/bitops.h @@ -0,0 +1,73 @@ +/* asm/arch/bitops.h for Linux/CRISv10 */ + +#ifndef _CRIS_ARCH_BITOPS_H +#define _CRIS_ARCH_BITOPS_H + +/* + * Helper functions for the core of the ff[sz] functions, wrapping the + * syntactically awkward asms. The asms compute the number of leading + * zeroes of a bits-in-byte and byte-in-word and word-in-dword-swapped + * number. They differ in that the first function also inverts all bits + * in the input. + */ +extern inline unsigned long cris_swapnwbrlz(unsigned long w) +{ + /* Let's just say we return the result in the same register as the + input. Saying we clobber the input but can return the result + in another register: + ! __asm__ ("swapnwbr %2\n\tlz %2,%0" + ! : "=r,r" (res), "=r,X" (dummy) : "1,0" (w)); + confuses gcc (sched.c, gcc from cris-dist-1.14). */ + + unsigned long res; + __asm__ ("swapnwbr %0 \n\t" + "lz %0,%0" + : "=r" (res) : "0" (w)); + return res; +} + +extern inline unsigned long cris_swapwbrlz(unsigned long w) +{ + unsigned res; + __asm__ ("swapwbr %0 \n\t" + "lz %0,%0" + : "=r" (res) + : "0" (w)); + return res; +} + +/* + * ffz = Find First Zero in word. Undefined if no zero exists, + * so code should check against ~0UL first.. + */ +extern inline unsigned long ffz(unsigned long w) +{ + return cris_swapnwbrlz(w); +} + +/** + * __ffs - find first bit in word. + * @word: The word to search + * + * Undefined if no bit exists, so code should check against 0 first. + */ +extern __inline__ unsigned long __ffs(unsigned long word) +{ + return cris_swapnwbrlz(~word); +} + +/** + * ffs - find first bit set + * @x: the word to search + * + * This is defined the same way as + * the libc and compiler builtin ffs routines, therefore + * differs in spirit from the above ffz (man ffs). + */ + +extern inline unsigned long kernel_ffs(unsigned long w) +{ + return w ? cris_swapwbrlz (w) + 1 : 0; +} + +#endif diff --git a/include/asm-cris/arch-v10/byteorder.h b/include/asm-cris/arch-v10/byteorder.h new file mode 100644 index 00000000000..e24465d1f40 --- /dev/null +++ b/include/asm-cris/arch-v10/byteorder.h @@ -0,0 +1,26 @@ +#ifndef _CRIS_ARCH_BYTEORDER_H +#define _CRIS_ARCH_BYTEORDER_H + +#include <asm/types.h> +#include <linux/compiler.h> + +/* we just define these two (as we can do the swap in a single + * asm instruction in CRIS) and the arch-independent files will put + * them together into ntohl etc. + */ + +extern __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) +{ + __asm__ ("swapwb %0" : "=r" (x) : "0" (x)); + + return(x); +} + +extern __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) +{ + __asm__ ("swapb %0" : "=r" (x) : "0" (x)); + + return(x); +} + +#endif diff --git a/include/asm-cris/arch-v10/cache.h b/include/asm-cris/arch-v10/cache.h new file mode 100644 index 00000000000..1d1d1ba65b1 --- /dev/null +++ b/include/asm-cris/arch-v10/cache.h @@ -0,0 +1,9 @@ +#ifndef _ASM_ARCH_CACHE_H +#define _ASM_ARCH_CACHE_H + +/* Etrax 100LX have 32-byte cache-lines. */ +#define L1_CACHE_BYTES 32 +#define L1_CACHE_SHIFT 5 +#define L1_CACHE_SHIFT_MAX 5 + +#endif /* _ASM_ARCH_CACHE_H */ diff --git a/include/asm-cris/arch-v10/checksum.h b/include/asm-cris/arch-v10/checksum.h new file mode 100644 index 00000000000..fde1d00aaa9 --- /dev/null +++ b/include/asm-cris/arch-v10/checksum.h @@ -0,0 +1,29 @@ +#ifndef _CRIS_ARCH_CHECKSUM_H +#define _CRIS_ARCH_CHECKSUM_H + +/* Checksum some values used in TCP/UDP headers. + * + * The gain by doing this in asm is that C will not generate carry-additions + * for the 32-bit components of the checksum, so otherwise we would have had + * to split all of those into 16-bit components, then add. + */ + +extern inline unsigned int +csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr, unsigned short len, + unsigned short proto, unsigned int sum) +{ + int res; + __asm__ ("add.d %2, %0\n\t" + "ax\n\t" + "add.d %3, %0\n\t" + "ax\n\t" + "add.d %4, %0\n\t" + "ax\n\t" + "addq 0, %0\n" + : "=r" (res) + : "0" (sum), "r" (daddr), "r" (saddr), "r" ((ntohs(len) << 16) + (proto << 8))); + + return res; +} + +#endif diff --git a/include/asm-cris/arch-v10/delay.h b/include/asm-cris/arch-v10/delay.h new file mode 100644 index 00000000000..cfedae0d2f5 --- /dev/null +++ b/include/asm-cris/arch-v10/delay.h @@ -0,0 +1,20 @@ +#ifndef _CRIS_ARCH_DELAY_H +#define _CRIS_ARCH_DELAY_H + +extern __inline__ void __delay(int loops) +{ + __asm__ __volatile__ ( + "move.d %0,$r9\n\t" + "beq 2f\n\t" + "subq 1,$r9\n\t" + "1:\n\t" + "bne 1b\n\t" + "subq 1,$r9\n" + "2:" + : : "g" (loops) : "r9"); +} + +#endif /* defined(_CRIS_ARCH_DELAY_H) */ + + + diff --git a/include/asm-cris/arch-v10/dma.h b/include/asm-cris/arch-v10/dma.h new file mode 100644 index 00000000000..9e078b9bc93 --- /dev/null +++ b/include/asm-cris/arch-v10/dma.h @@ -0,0 +1,46 @@ +/* Defines for using and allocating dma channels. */ + +#ifndef _ASM_ARCH_DMA_H +#define _ASM_ARCH_DMA_H + +#define MAX_DMA_CHANNELS 10 + +/* dma0 and dma1 used for network (ethernet) */ +#define NETWORK_TX_DMA_NBR 0 +#define NETWORK_RX_DMA_NBR 1 + +/* dma2 and dma3 shared by par0, scsi0, ser2 and ata */ +#define PAR0_TX_DMA_NBR 2 +#define PAR0_RX_DMA_NBR 3 +#define SCSI0_TX_DMA_NBR 2 +#define SCSI0_RX_DMA_NBR 3 +#define SER2_TX_DMA_NBR 2 +#define SER2_RX_DMA_NBR 3 +#define ATA_TX_DMA_NBR 2 +#define ATA_RX_DMA_NBR 3 + +/* dma4 and dma5 shared by par1, scsi1, ser3 and extdma0 */ +#define PAR1_TX_DMA_NBR 4 +#define PAR1_RX_DMA_NBR 5 +#define SCSI1_TX_DMA_NBR 4 +#define SCSI1_RX_DMA_NBR 5 +#define SER3_TX_DMA_NBR 4 +#define SER3_RX_DMA_NBR 5 +#define EXTDMA0_TX_DMA_NBR 4 +#define EXTDMA0_RX_DMA_NBR 5 + +/* dma6 and dma7 shared by ser0, extdma1 and mem2mem */ +#define SER0_TX_DMA_NBR 6 +#define SER0_RX_DMA_NBR 7 +#define EXTDMA1_TX_DMA_NBR 6 +#define EXTDMA1_RX_DMA_NBR 7 +#define MEM2MEM_TX_DMA_NBR 6 +#define MEM2MEM_RX_DMA_NBR 7 + +/* dma8 and dma9 shared by ser1 and usb */ +#define SER1_TX_DMA_NBR 8 +#define SER1_RX_DMA_NBR 9 +#define USB_TX_DMA_NBR 8 +#define USB_RX_DMA_NBR 9 + +#endif diff --git a/include/asm-cris/arch-v10/elf.h b/include/asm-cris/arch-v10/elf.h new file mode 100644 index 00000000000..2a2201ca538 --- /dev/null +++ b/include/asm-cris/arch-v10/elf.h @@ -0,0 +1,71 @@ +#ifndef __ASMCRIS_ARCH_ELF_H +#define __ASMCRIS_ARCH_ELF_H + +/* + * ELF register definitions.. + */ + +#include <asm/ptrace.h> + +/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program + starts (a register; assume first param register for CRIS) + contains a pointer to a function which might be + registered using `atexit'. This provides a mean for the + dynamic linker to call DT_FINI functions for shared libraries + that have been loaded before the code runs. + + A value of 0 tells we have no such handler. */ + +/* Explicitly set registers to 0 to increase determinism. */ +#define ELF_PLAT_INIT(_r, load_addr) do { \ + (_r)->r13 = 0; (_r)->r12 = 0; (_r)->r11 = 0; (_r)->r10 = 0; \ + (_r)->r9 = 0; (_r)->r8 = 0; (_r)->r7 = 0; (_r)->r6 = 0; \ + (_r)->r5 = 0; (_r)->r4 = 0; (_r)->r3 = 0; (_r)->r2 = 0; \ + (_r)->r1 = 0; (_r)->r0 = 0; (_r)->mof = 0; (_r)->srp = 0; \ +} while (0) + +/* The additional layer below is because the stack pointer is missing in + the pt_regs struct, but needed in a core dump. pr_reg is a elf_gregset_t, + and should be filled in according to the layout of the user_regs_struct + struct; regs is a pt_regs struct. We dump all registers, though several are + obviously unnecessary. That way there's less need for intelligence at + the receiving end (i.e. gdb). */ +#define ELF_CORE_COPY_REGS(pr_reg, regs) \ + pr_reg[0] = regs->r0; \ + pr_reg[1] = regs->r1; \ + pr_reg[2] = regs->r2; \ + pr_reg[3] = regs->r3; \ + pr_reg[4] = regs->r4; \ + pr_reg[5] = regs->r5; \ + pr_reg[6] = regs->r6; \ + pr_reg[7] = regs->r7; \ + pr_reg[8] = regs->r8; \ + pr_reg[9] = regs->r9; \ + pr_reg[10] = regs->r10; \ + pr_reg[11] = regs->r11; \ + pr_reg[12] = regs->r12; \ + pr_reg[13] = regs->r13; \ + pr_reg[14] = rdusp(); /* sp */ \ + pr_reg[15] = regs->irp; /* pc */ \ + pr_reg[16] = 0; /* p0 */ \ + pr_reg[17] = rdvr(); /* vr */ \ + pr_reg[18] = 0; /* p2 */ \ + pr_reg[19] = 0; /* p3 */ \ + pr_reg[20] = 0; /* p4 */ \ + pr_reg[21] = (regs->dccr & 0xffff); /* ccr */ \ + pr_reg[22] = 0; /* p6 */ \ + pr_reg[23] = regs->mof; /* mof */ \ + pr_reg[24] = 0; /* p8 */ \ + pr_reg[25] = 0; /* ibr */ \ + pr_reg[26] = 0; /* irp */ \ + pr_reg[27] = regs->srp; /* srp */ \ + pr_reg[28] = 0; /* bar */ \ + pr_reg[29] = regs->dccr; /* dccr */ \ + pr_reg[30] = 0; /* brp */ \ + pr_reg[31] = rdusp(); /* usp */ \ + pr_reg[32] = 0; /* csrinstr */ \ + pr_reg[33] = 0; /* csraddr */ \ + pr_reg[34] = 0; /* csrdata */ + + +#endif diff --git a/include/asm-cris/arch-v10/io.h b/include/asm-cris/arch-v10/io.h new file mode 100644 index 00000000000..0bc38a0313c --- /dev/null +++ b/include/asm-cris/arch-v10/io.h @@ -0,0 +1,193 @@ +#ifndef _ASM_ARCH_CRIS_IO_H +#define _ASM_ARCH_CRIS_IO_H + +#include <asm/arch/svinto.h> +#include <linux/config.h> + +/* Etrax shadow registers - which live in arch/cris/kernel/shadows.c */ + +extern unsigned long port_g_data_shadow; +extern unsigned char port_pa_dir_shadow; +extern unsigned char port_pa_data_shadow; +extern unsigned char port_pb_i2c_shadow; +extern unsigned char port_pb_config_shadow; +extern unsigned char port_pb_dir_shadow; +extern unsigned char port_pb_data_shadow; +extern unsigned long r_timer_ctrl_shadow; + +extern unsigned long port_cse1_shadow; +extern unsigned long port_csp0_shadow; +extern unsigned long port_csp4_shadow; + +extern volatile unsigned long *port_cse1_addr; +extern volatile unsigned long *port_csp0_addr; +extern volatile unsigned long *port_csp4_addr; + +/* macro for setting regs through a shadow - + * r = register name (like R_PORT_PA_DATA) + * s = shadow name (like port_pa_data_shadow) + * b = bit number + * v = value (0 or 1) + */ + +#define REG_SHADOW_SET(r,s,b,v) *r = s = (s & ~(1 << (b))) | ((v) << (b)) + +/* The LED's on various Etrax-based products are set differently. */ + +#if defined(CONFIG_ETRAX_NO_LEDS) || defined(CONFIG_SVINTO_SIM) +#undef CONFIG_ETRAX_PA_LEDS +#undef CONFIG_ETRAX_PB_LEDS +#undef CONFIG_ETRAX_CSP0_LEDS +#define LED_NETWORK_SET_G(x) +#define LED_NETWORK_SET_R(x) +#define LED_ACTIVE_SET_G(x) +#define LED_ACTIVE_SET_R(x) +#define LED_DISK_WRITE(x) +#define LED_DISK_READ(x) +#endif + +#if !defined(CONFIG_ETRAX_CSP0_LEDS) +#define LED_BIT_SET(x) +#define LED_BIT_CLR(x) +#endif + +#define LED_OFF 0x00 +#define LED_GREEN 0x01 +#define LED_RED 0x02 +#define LED_ORANGE (LED_GREEN | LED_RED) + +#if CONFIG_ETRAX_LED1G == CONFIG_ETRAX_LED1R +#define LED_NETWORK_SET(x) \ + do { \ + LED_NETWORK_SET_G((x) & LED_GREEN); \ + } while (0) +#else +#define LED_NETWORK_SET(x) \ + do { \ + LED_NETWORK_SET_G((x) & LED_GREEN); \ + LED_NETWORK_SET_R((x) & LED_RED); \ + } while (0) +#endif +#if CONFIG_ETRAX_LED2G == CONFIG_ETRAX_LED2R +#define LED_ACTIVE_SET(x) \ + do { \ + LED_ACTIVE_SET_G((x) & LED_GREEN); \ + } while (0) +#else +#define LED_ACTIVE_SET(x) \ + do { \ + LED_ACTIVE_SET_G((x) & LED_GREEN); \ + LED_ACTIVE_SET_R((x) & LED_RED); \ + } while (0) +#endif + +#ifdef CONFIG_ETRAX_PA_LEDS +#define LED_NETWORK_SET_G(x) \ + REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED1G, !(x)) +#define LED_NETWORK_SET_R(x) \ + REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED1R, !(x)) +#define LED_ACTIVE_SET_G(x) \ + REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED2G, !(x)) +#define LED_ACTIVE_SET_R(x) \ + REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED2R, !(x)) +#define LED_DISK_WRITE(x) \ + do{\ + REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED3G, !(x));\ + REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED3R, !(x));\ + }while(0) +#define LED_DISK_READ(x) \ + REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED3G, !(x)) +#endif + +#ifdef CONFIG_ETRAX_PB_LEDS +#define LED_NETWORK_SET_G(x) \ + REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED1G, !(x)) +#define LED_NETWORK_SET_R(x) \ + REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED1R, !(x)) +#define LED_ACTIVE_SET_G(x) \ + REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED2G, !(x)) +#define LED_ACTIVE_SET_R(x) \ + REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED2R, !(x)) +#define LED_DISK_WRITE(x) \ + do{\ + REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED3G, !(x));\ + REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED3R, !(x));\ + }while(0) +#define LED_DISK_READ(x) \ + REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED3G, !(x)) +#endif + +#ifdef CONFIG_ETRAX_CSP0_LEDS +#define CONFIGURABLE_LEDS\ + ((1 << CONFIG_ETRAX_LED1G ) | (1 << CONFIG_ETRAX_LED1R ) |\ + (1 << CONFIG_ETRAX_LED2G ) | (1 << CONFIG_ETRAX_LED2R ) |\ + (1 << CONFIG_ETRAX_LED3G ) | (1 << CONFIG_ETRAX_LED3R ) |\ + (1 << CONFIG_ETRAX_LED4G ) | (1 << CONFIG_ETRAX_LED4R ) |\ + (1 << CONFIG_ETRAX_LED5G ) | (1 << CONFIG_ETRAX_LED5R ) |\ + (1 << CONFIG_ETRAX_LED6G ) | (1 << CONFIG_ETRAX_LED6R ) |\ + (1 << CONFIG_ETRAX_LED7G ) | (1 << CONFIG_ETRAX_LED7R ) |\ + (1 << CONFIG_ETRAX_LED8Y ) | (1 << CONFIG_ETRAX_LED9Y ) |\ + (1 << CONFIG_ETRAX_LED10Y ) |(1 << CONFIG_ETRAX_LED11Y )|\ + (1 << CONFIG_ETRAX_LED12R )) + +#define LED_NETWORK_SET_G(x) \ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED1G, !(x)) +#define LED_NETWORK_SET_R(x) \ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED1R, !(x)) +#define LED_ACTIVE_SET_G(x) \ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED2G, !(x)) +#define LED_ACTIVE_SET_R(x) \ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED2R, !(x)) +#define LED_DISK_WRITE(x) \ + do{\ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED3G, !(x));\ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED3R, !(x));\ + }while(0) +#define LED_DISK_READ(x) \ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED3G, !(x)) +#define LED_BIT_SET(x)\ + do{\ + if((( 1 << x) & CONFIGURABLE_LEDS) != 0)\ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, x, 1);\ + }while(0) +#define LED_BIT_CLR(x)\ + do{\ + if((( 1 << x) & CONFIGURABLE_LEDS) != 0)\ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, x, 0);\ + }while(0) +#endif + +# +#ifdef CONFIG_ETRAX_SOFT_SHUTDOWN +#define SOFT_SHUTDOWN() \ + REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_SHUTDOWN_BIT, 1) +#else +#define SOFT_SHUTDOWN() +#endif + +/* Console I/O for simulated etrax100. Use #ifdef so erroneous + use will be evident. */ +#ifdef CONFIG_SVINTO_SIM + /* Let's use the ucsim interface since it lets us do write(2, ...) */ +#define SIMCOUT(s,len) \ + asm ("moveq 4,$r9 \n\t" \ + "moveq 2,$r10 \n\t" \ + "move.d %0,$r11 \n\t" \ + "move.d %1,$r12 \n\t" \ + "push $irp \n\t" \ + "move 0f,$irp \n\t" \ + "jump -6809 \n" \ + "0: \n\t" \ + "pop $irp" \ + : : "rm" (s), "rm" (len) : "r9","r10","r11","r12","memory") +#define TRACE_ON() __extension__ \ + ({ int _Foofoo; __asm__ volatile ("bmod [%0],%0" : "=r" (_Foofoo) : "0" \ + (255)); _Foofoo; }) + +#define TRACE_OFF() do { __asm__ volatile ("bmod [%0],%0" :: "r" (254)); } while (0) +#define SIM_END() do { __asm__ volatile ("bmod [%0],%0" :: "r" (28)); } while (0) +#define CRIS_CYCLES() __extension__ \ + ({ unsigned long c; asm ("bmod [%1],%0" : "=r" (c) : "r" (27)); c;}) +#endif /* ! defined CONFIG_SVINTO_SIM */ + +#endif diff --git a/include/asm-cris/arch-v10/irq.h b/include/asm-cris/arch-v10/irq.h new file mode 100644 index 00000000000..a2a6e1533ea --- /dev/null +++ b/include/asm-cris/arch-v10/irq.h @@ -0,0 +1,181 @@ +/* + * Interrupt handling assembler and defines for Linux/CRISv10 + */ + +#ifndef _ASM_ARCH_IRQ_H +#define _ASM_ARCH_IRQ_H + +#include <asm/arch/sv_addr_ag.h> + +#define NR_IRQS 32 + +/* The first vector number used for IRQs in v10 is really 0x20 */ +/* but all the code and constants are offseted to make 0 the first */ +#define FIRST_IRQ 0 + +#define SOME_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, some) /* 0 ? */ +#define NMI_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, nmi) /* 1 */ +#define TIMER0_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, timer0) /* 2 */ +#define TIMER1_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, timer1) /* 3 */ +/* mio, ata, par0, scsi0 on 4 */ +/* par1, scsi1 on 5 */ +#define NETWORK_STATUS_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, network) /* 6 */ + +#define SERIAL_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, serial) /* 8 */ +#define PA_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, pa) /* 11 */ +/* extdma0 and extdma1 is at irq 12 and 13 and/or same as dma5 and dma6 ? */ +#define EXTDMA0_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, ext_dma0) +#define EXTDMA1_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, ext_dma1) + +/* dma0-9 is irq 16..25 */ +/* 16,17: network */ +#define DMA0_TX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma0) +#define DMA1_RX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma1) +#define NETWORK_DMA_TX_IRQ_NBR DMA0_TX_IRQ_NBR +#define NETWORK_DMA_RX_IRQ_NBR DMA1_RX_IRQ_NBR + +/* 18,19: dma2 and dma3 shared by par0, scsi0, ser2 and ata */ +#define DMA2_TX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma2) +#define DMA3_RX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma3) +#define SER2_DMA_TX_IRQ_NBR DMA2_TX_IRQ_NBR +#define SER2_DMA_RX_IRQ_NBR DMA3_RX_IRQ_NBR + +/* 20,21: dma4 and dma5 shared by par1, scsi1, ser3 and extdma0 */ +#define DMA4_TX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma4) +#define DMA5_RX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma5) +#define SER3_DMA_TX_IRQ_NBR DMA4_TX_IRQ_NBR +#define SER3_DMA_RX_IRQ_NBR DMA5_RX_IRQ_NBR + +/* 22,23: dma6 and dma7 shared by ser0, extdma1 and mem2mem */ +#define DMA6_TX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma6) +#define DMA7_RX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma7) +#define SER0_DMA_TX_IRQ_NBR DMA6_TX_IRQ_NBR +#define SER0_DMA_RX_IRQ_NBR DMA7_RX_IRQ_NBR +#define MEM2MEM_DMA_TX_IRQ_NBR DMA6_TX_IRQ_NBR +#define MEM2MEM_DMA_RX_IRQ_NBR DMA7_RX_IRQ_NBR + +/* 24,25: dma8 and dma9 shared by ser1 and usb */ +#define DMA8_TX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma8) +#define DMA9_RX_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, dma9) +#define SER1_DMA_TX_IRQ_NBR DMA8_TX_IRQ_NBR +#define SER1_DMA_RX_IRQ_NBR DMA9_RX_IRQ_NBR +#define USB_DMA_TX_IRQ_NBR DMA8_TX_IRQ_NBR +#define USB_DMA_RX_IRQ_NBR DMA9_RX_IRQ_NBR + +/* usb: controller at irq 31 + uses DMA8 and DMA9 */ +#define USB_HC_IRQ_NBR IO_BITNR(R_VECT_MASK_RD, usb) + +/* our fine, global, etrax irq vector! the pointer lives in the head.S file. */ + +typedef void (*irqvectptr)(void); + +struct etrax_interrupt_vector { + irqvectptr v[256]; +}; + +extern struct etrax_interrupt_vector *etrax_irv; +void set_int_vector(int n, irqvectptr addr, irqvectptr saddr); +void set_break_vector(int n, irqvectptr addr); + +#define mask_irq(irq_nr) (*R_VECT_MASK_CLR = 1 << (irq_nr)); +#define unmask_irq(irq_nr) (*R_VECT_MASK_SET = 1 << (irq_nr)); + +#define __STR(x) #x +#define STR(x) __STR(x) + +/* SAVE_ALL saves registers so they match pt_regs */ + +#define SAVE_ALL \ + "move $irp,[$sp=$sp-16]\n\t" /* push instruction pointer and fake SBFS struct */ \ + "push $srp\n\t" /* push subroutine return pointer */ \ + "push $dccr\n\t" /* push condition codes */ \ + "push $mof\n\t" /* push multiply overflow reg */ \ + "di\n\t" /* need to disable irq's at this point */\ + "subq 14*4,$sp\n\t" /* make room for r0-r13 */ \ + "movem $r13,[$sp]\n\t" /* push the r0-r13 registers */ \ + "push $r10\n\t" /* push orig_r10 */ \ + "clear.d [$sp=$sp-4]\n\t" /* frametype - this is a normal stackframe */ + + /* BLOCK_IRQ and UNBLOCK_IRQ do the same as mask_irq and unmask_irq */ + +#define BLOCK_IRQ(mask,nr) \ + "move.d " #mask ",$r0\n\t" \ + "move.d $r0,[0xb00000d8]\n\t" + +#define UNBLOCK_IRQ(mask) \ + "move.d " #mask ",$r0\n\t" \ + "move.d $r0,[0xb00000dc]\n\t" + +#define IRQ_NAME2(nr) nr##_interrupt(void) +#define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr) +#define sIRQ_NAME(nr) IRQ_NAME2(sIRQ##nr) +#define BAD_IRQ_NAME(nr) IRQ_NAME2(bad_IRQ##nr) + + /* the asm IRQ handler makes sure the causing IRQ is blocked, then it calls + * do_IRQ (with irq disabled still). after that it unblocks and jumps to + * ret_from_intr (entry.S) + * + * The reason the IRQ is blocked is to allow an sti() before the handler which + * will acknowledge the interrupt is run. + */ + +#define BUILD_IRQ(nr,mask) \ +void IRQ_NAME(nr); \ +void sIRQ_NAME(nr); \ +void BAD_IRQ_NAME(nr); \ +__asm__ ( \ + ".text\n\t" \ + "IRQ" #nr "_interrupt:\n\t" \ + SAVE_ALL \ + "sIRQ" #nr "_interrupt:\n\t" /* shortcut for the multiple irq handler */ \ + BLOCK_IRQ(mask,nr) /* this must be done to prevent irq loops when we ei later */ \ + "moveq "#nr",$r10\n\t" \ + "move.d $sp,$r11\n\t" \ + "jsr do_IRQ\n\t" /* irq.c, r10 and r11 are arguments */ \ + UNBLOCK_IRQ(mask) \ + "moveq 0,$r9\n\t" /* make ret_from_intr realise we came from an irq */ \ + "jump ret_from_intr\n\t" \ + "bad_IRQ" #nr "_interrupt:\n\t" \ + "push $r0\n\t" \ + BLOCK_IRQ(mask,nr) \ + "pop $r0\n\t" \ + "reti\n\t" \ + "nop\n"); + +/* This is subtle. The timer interrupt is crucial and it should not be disabled for + * too long. However, if it had been a normal interrupt as per BUILD_IRQ, it would + * have been BLOCK'ed, and then softirq's are run before we return here to UNBLOCK. + * If the softirq's take too much time to run, the timer irq won't run and the + * watchdog will kill us. + * + * Furthermore, if a lot of other irq's occur before we return here, the multiple_irq + * handler is run and it prioritizes the timer interrupt. However if we had BLOCK'ed + * it here, we would not get the multiple_irq at all. + * + * The non-blocking here is based on the knowledge that the timer interrupt is + * registred as a fast interrupt (SA_INTERRUPT) so that we _know_ there will not + * be an sti() before the timer irq handler is run to acknowledge the interrupt. + */ + +#define BUILD_TIMER_IRQ(nr,mask) \ +void IRQ_NAME(nr); \ +void sIRQ_NAME(nr); \ +void BAD_IRQ_NAME(nr); \ +__asm__ ( \ + ".text\n\t" \ + "IRQ" #nr "_interrupt:\n\t" \ + SAVE_ALL \ + "sIRQ" #nr "_interrupt:\n\t" /* shortcut for the multiple irq handler */ \ + "moveq "#nr",$r10\n\t" \ + "move.d $sp,$r11\n\t" \ + "jsr do_IRQ\n\t" /* irq.c, r10 and r11 are arguments */ \ + "moveq 0,$r9\n\t" /* make ret_from_intr realise we came from an irq */ \ + "jump ret_from_intr\n\t" \ + "bad_IRQ" #nr "_interrupt:\n\t" \ + "push $r0\n\t" \ + BLOCK_IRQ(mask,nr) \ + "pop $r0\n\t" \ + "reti\n\t" \ + "nop\n"); + +#endif diff --git a/include/asm-cris/arch-v10/mmu.h b/include/asm-cris/arch-v10/mmu.h new file mode 100644 index 00000000000..d18aa00e50b --- /dev/null +++ b/include/asm-cris/arch-v10/mmu.h @@ -0,0 +1,106 @@ +/* + * CRIS MMU constants and PTE layout + */ + +#ifndef _CRIS_ARCH_MMU_H +#define _CRIS_ARCH_MMU_H + +/* type used in struct mm to couple an MMU context to an active mm */ + +typedef unsigned int mm_context_t; + +/* kernel memory segments */ + +#define KSEG_F 0xf0000000UL +#define KSEG_E 0xe0000000UL +#define KSEG_D 0xd0000000UL +#define KSEG_C 0xc0000000UL +#define KSEG_B 0xb0000000UL +#define KSEG_A 0xa0000000UL +#define KSEG_9 0x90000000UL +#define KSEG_8 0x80000000UL +#define KSEG_7 0x70000000UL +#define KSEG_6 0x60000000UL +#define KSEG_5 0x50000000UL +#define KSEG_4 0x40000000UL +#define KSEG_3 0x30000000UL +#define KSEG_2 0x20000000UL +#define KSEG_1 0x10000000UL +#define KSEG_0 0x00000000UL + +/* CRIS PTE bits (see R_TLB_LO in the register description) + * + * Bit: 31-13 12-------4 3 2 1 0 + * ________________________________________________ + * | pfn | reserved | global | valid | kernel | we | + * |_____|__________|________|_______|________|_____| + * + * (pfn = physical frame number) + */ + +/* Real HW-based PTE bits. We use some synonym names so that + * things become less confusing in combination with the SW-based + * bits further below. + * + */ + +#define _PAGE_WE (1<<0) /* page is write-enabled */ +#define _PAGE_SILENT_WRITE (1<<0) /* synonym */ +#define _PAGE_KERNEL (1<<1) /* page is kernel only */ +#define _PAGE_VALID (1<<2) /* page is valid */ +#define _PAGE_SILENT_READ (1<<2) /* synonym */ +#define _PAGE_GLOBAL (1<<3) /* global page - context is ignored */ + +/* Bits the HW doesn't care about but the kernel uses them in SW */ + +#define _PAGE_PRESENT (1<<4) /* page present in memory */ +#define _PAGE_FILE (1<<5) /* set: pagecache, unset: swap (when !PRESENT) */ +#define _PAGE_ACCESSED (1<<5) /* simulated in software using valid bit */ +#define _PAGE_MODIFIED (1<<6) /* simulated in software using we bit */ +#define _PAGE_READ (1<<7) /* read-enabled */ +#define _PAGE_WRITE (1<<8) /* write-enabled */ + +/* Define some higher level generic page attributes. */ + +#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED) +#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED) + +#define _PAGE_TABLE (_PAGE_PRESENT | __READABLE | __WRITEABLE) +#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED) + +#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED) +#define PAGE_SHARED __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_WRITE | \ + _PAGE_ACCESSED) +#define PAGE_COPY __pgprot(_PAGE_PRESENT | __READABLE) // | _PAGE_COW +#define PAGE_READONLY __pgprot(_PAGE_PRESENT | __READABLE) +#define PAGE_KERNEL __pgprot(_PAGE_GLOBAL | _PAGE_KERNEL | \ + _PAGE_PRESENT | __READABLE | __WRITEABLE) +#define _KERNPG_TABLE (_PAGE_TABLE | _PAGE_KERNEL) + +/* + * CRIS can't do page protection for execute, and considers read the same. + * Also, write permissions imply read permissions. This is the closest we can + * get.. + */ + +#define __P000 PAGE_NONE +#define __P001 PAGE_READONLY +#define __P010 PAGE_COPY +#define __P011 PAGE_COPY +#define __P100 PAGE_READONLY +#define __P101 PAGE_READONLY +#define __P110 PAGE_COPY +#define __P111 PAGE_COPY + +#define __S000 PAGE_NONE +#define __S001 PAGE_READONLY +#define __S010 PAGE_SHARED +#define __S011 PAGE_SHARED +#define __S100 PAGE_READONLY +#define __S101 PAGE_READONLY +#define __S110 PAGE_SHARED +#define __S111 PAGE_SHARED + +#define PTE_FILE_MAX_BITS 26 + +#endif diff --git a/include/asm-cris/arch-v10/offset.h b/include/asm-cris/arch-v10/offset.h new file mode 100644 index 00000000000..fcbd77eab28 --- /dev/null +++ b/include/asm-cris/arch-v10/offset.h @@ -0,0 +1,33 @@ +#ifndef __ASM_OFFSETS_H__ +#define __ASM_OFFSETS_H__ +/* + * DO NOT MODIFY. + * + * This file was generated by arch/cris/Makefile + * + */ + +#define PT_orig_r10 4 /* offsetof(struct pt_regs, orig_r10) */ +#define PT_r13 8 /* offsetof(struct pt_regs, r13) */ +#define PT_r12 12 /* offsetof(struct pt_regs, r12) */ +#define PT_r11 16 /* offsetof(struct pt_regs, r11) */ +#define PT_r10 20 /* offsetof(struct pt_regs, r10) */ +#define PT_r9 24 /* offsetof(struct pt_regs, r9) */ +#define PT_mof 64 /* offsetof(struct pt_regs, mof) */ +#define PT_dccr 68 /* offsetof(struct pt_regs, dccr) */ +#define PT_srp 72 /* offsetof(struct pt_regs, srp) */ + +#define TI_task 0 /* offsetof(struct thread_info, task) */ +#define TI_flags 8 /* offsetof(struct thread_info, flags) */ +#define TI_preempt_count 16 /* offsetof(struct thread_info, preempt_count) */ + +#define THREAD_ksp 0 /* offsetof(struct thread_struct, ksp) */ +#define THREAD_usp 4 /* offsetof(struct thread_struct, usp) */ +#define THREAD_dccr 8 /* offsetof(struct thread_struct, dccr) */ + +#define TASK_pid 133 /* offsetof(struct task_struct, pid) */ + +#define LCLONE_VM 256 /* CLONE_VM */ +#define LCLONE_UNTRACED 8388608 /* CLONE_UNTRACED */ + +#endif diff --git a/include/asm-cris/arch-v10/page.h b/include/asm-cris/arch-v10/page.h new file mode 100644 index 00000000000 |