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author | blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-12-09 17:03:50 +0000 |
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committer | blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-12-09 17:03:50 +0000 |
commit | 7eb0c8e8f973ba842bf5f915f4559e88ba2ffcae (patch) | |
tree | 39d87abbb8c937fc452bd4cccc8e54ccccf22628 /hw/eccmemctl.c | |
parent | 85ffbdfc72a63d4f828615dcd301faadc595ed37 (diff) | |
download | qemu-7eb0c8e8f973ba842bf5f915f4559e88ba2ffcae.zip qemu-7eb0c8e8f973ba842bf5f915f4559e88ba2ffcae.tar.gz qemu-7eb0c8e8f973ba842bf5f915f4559e88ba2ffcae.tar.bz2 |
Add support for eccmemctl (Robert Reif)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3785 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/eccmemctl.c')
-rwxr-xr-x | hw/eccmemctl.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/hw/eccmemctl.c b/hw/eccmemctl.c new file mode 100755 index 0000000..0b44fab --- /dev/null +++ b/hw/eccmemctl.c @@ -0,0 +1,266 @@ +/* + * QEMU Sparc Sun4m ECC memory controller emulation + * + * Copyright (c) 2007 Robert Reif + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include "hw.h" +#include "sun4m.h" +#include "sysemu.h" + +//#define DEBUG_ECC + +#ifdef DEBUG_ECC +#define DPRINTF(fmt, args...) \ + do { printf("ECC: " fmt , ##args); } while (0) +#else +#define DPRINTF(fmt, args...) +#endif + +/* There are 3 versions of this chip used in SMP sun4m systems: + * MCC (version 0, implementation 0) SS-600MP + * EMC (version 0, implementation 1) SS-10 + * SMC (version 0, implementation 2) SS-10SX and SS-20 + */ + +/* Register offsets */ +#define ECC_FCR_REG 0 +#define ECC_FSR_REG 8 +#define ECC_FAR0_REG 16 +#define ECC_FAR1_REG 20 +#define ECC_DIAG_REG 24 + +/* ECC fault control register */ +#define ECC_FCR_EE 0x00000001 /* Enable ECC checking */ +#define ECC_FCR_EI 0x00000010 /* Enable Interrupts on correctable errors */ +#define ECC_FCR_VER 0x0f000000 /* Version */ +#define ECC_FCR_IMPL 0xf0000000 /* Implementation */ + +/* ECC fault status register */ +#define ECC_FSR_CE 0x00000001 /* Correctable error */ +#define ECC_FSR_BS 0x00000002 /* C2 graphics bad slot access */ +#define ECC_FSR_TO 0x00000004 /* Timeout on write */ +#define ECC_FSR_UE 0x00000008 /* Uncorrectable error */ +#define ECC_FSR_DW 0x000000f0 /* Index of double word in block */ +#define ECC_FSR_SYND 0x0000ff00 /* Syndrome for correctable error */ +#define ECC_FSR_ME 0x00010000 /* Multiple errors */ +#define ECC_FSR_C2ERR 0x00020000 /* C2 graphics error */ + +/* ECC fault address register 0 */ +#define ECC_FAR0_PADDR 0x0000000f /* PA[32-35] */ +#define ECC_FAR0_TYPE 0x000000f0 /* Transaction type */ +#define ECC_FAR0_SIZE 0x00000700 /* Transaction size */ +#define ECC_FAR0_CACHE 0x00000800 /* Mapped cacheable */ +#define ECC_FAR0_LOCK 0x00001000 /* Error occurred in attomic cycle */ +#define ECC_FAR0_BMODE 0x00002000 /* Boot mode */ +#define ECC_FAR0_VADDR 0x003fc000 /* VA[12-19] (superset bits) */ +#define ECC_FAR0_S 0x08000000 /* Supervisor mode */ +#define ECC_FARO_MID 0xf0000000 /* Module ID */ + +/* ECC diagnostic register */ +#define ECC_DIAG_CBX 0x00000001 +#define ECC_DIAG_CB0 0x00000002 +#define ECC_DIAG_CB1 0x00000004 +#define ECC_DIAG_CB2 0x00000008 +#define ECC_DIAG_CB4 0x00000010 +#define ECC_DIAG_CB8 0x00000020 +#define ECC_DIAG_CB16 0x00000040 +#define ECC_DIAG_CB32 0x00000080 +#define ECC_DIAG_DMODE 0x00000c00 + +#define ECC_NREGS 8 +#define ECC_SIZE (ECC_NREGS * sizeof(uint32_t)) +#define ECC_ADDR_MASK (ECC_SIZE - 1) + +typedef struct ECCState { + uint32_t regs[ECC_NREGS]; +} ECCState; + +static void ecc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) +{ + printf("ECC: Unsupported write 0x" TARGET_FMT_plx " %02x\n", + addr, val & 0xff); +} + +static uint32_t ecc_mem_readb(void *opaque, target_phys_addr_t addr) +{ + printf("ECC: Unsupported read 0x" TARGET_FMT_plx " 00\n", addr); + return 0; +} + +static void ecc_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) +{ + printf("ECC: Unsupported write 0x" TARGET_FMT_plx " %04x\n", + addr, val & 0xffff); +} + +static uint32_t ecc_mem_readw(void *opaque, target_phys_addr_t addr) +{ + printf("ECC: Unsupported read 0x" TARGET_FMT_plx " 0000\n", addr); + return 0; +} + +static void ecc_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) +{ + ECCState *s = opaque; + + switch (addr & ECC_ADDR_MASK) { + case ECC_FCR_REG: + s->regs[0] = (s->regs[0] & (ECC_FCR_VER | ECC_FCR_IMPL)) | + (val & ~(ECC_FCR_VER | ECC_FCR_IMPL)); + DPRINTF("Write fault control %08x\n", val); + break; + case 4: + s->regs[1] = val; + DPRINTF("Write reg[1] %08x\n", val); + break; + case ECC_FSR_REG: + s->regs[2] = val; + DPRINTF("Write fault status %08x\n", val); + break; + case 12: + s->regs[3] = val; + DPRINTF("Write reg[3] %08x\n", val); + break; + case ECC_FAR0_REG: + s->regs[4] = val; + DPRINTF("Write fault address 0 %08x\n", val); + break; + case ECC_FAR1_REG: + s->regs[5] = val; + DPRINTF("Write fault address 1 %08x\n", val); + break; + case ECC_DIAG_REG: + s->regs[6] = val; + DPRINTF("Write diag %08x\n", val); + break; + case 28: + s->regs[7] = val; + DPRINTF("Write reg[7] %08x\n", val); + break; + } +} + +static uint32_t ecc_mem_readl(void *opaque, target_phys_addr_t addr) +{ + ECCState *s = opaque; + uint32_t ret = 0; + + switch (addr & ECC_ADDR_MASK) { + case ECC_FCR_REG: + ret = s->regs[0]; + DPRINTF("Read enable %08x\n", ret); + break; + case 4: + ret = s->regs[1]; + DPRINTF("Read register[1] %08x\n", ret); + break; + case ECC_FSR_REG: + ret = s->regs[2]; + DPRINTF("Read fault status %08x\n", ret); + break; + case 12: + ret = s->regs[3]; + DPRINTF("Read reg[3] %08x\n", ret); + break; + case ECC_FAR0_REG: + ret = s->regs[4]; + DPRINTF("Read fault address 0 %08x\n", ret); + break; + case ECC_FAR1_REG: + ret = s->regs[5]; + DPRINTF("Read fault address 1 %08x\n", ret); + break; + case ECC_DIAG_REG: + ret = s->regs[6]; + DPRINTF("Read diag %08x\n", ret); + break; + case 28: + ret = s->regs[7]; + DPRINTF("Read reg[7] %08x\n", ret); + break; + } + return ret; +} + +static CPUReadMemoryFunc *ecc_mem_read[3] = { + ecc_mem_readb, + ecc_mem_readw, + ecc_mem_readl, +}; + +static CPUWriteMemoryFunc *ecc_mem_write[3] = { + ecc_mem_writeb, + ecc_mem_writew, + ecc_mem_writel, +}; + +static int ecc_load(QEMUFile *f, void *opaque, int version_id) +{ + ECCState *s = opaque; + int i; + + if (version_id != 1) + return -EINVAL; + + for (i = 0; i < ECC_NREGS; i++) + qemu_get_be32s(f, &s->regs[i]); + + return 0; +} + +static void ecc_save(QEMUFile *f, void *opaque) +{ + ECCState *s = opaque; + int i; + + for (i = 0; i < ECC_NREGS; i++) + qemu_put_be32s(f, &s->regs[i]); +} + +static void ecc_reset(void *opaque) +{ + ECCState *s = opaque; + int i; + + s->regs[ECC_FCR_REG] &= (ECC_FCR_VER | ECC_FCR_IMPL); + + for (i = 1; i < ECC_NREGS; i++) + s->regs[i] = 0; +} + +void * ecc_init(target_phys_addr_t base, uint32_t version) +{ + int ecc_io_memory; + ECCState *s; + + s = qemu_mallocz(sizeof(ECCState)); + if (!s) + return NULL; + + s->regs[0] = version; + + ecc_io_memory = cpu_register_io_memory(0, ecc_mem_read, ecc_mem_write, s); + cpu_register_physical_memory(base, ECC_SIZE, ecc_io_memory); + register_savevm("ECC", base, 1, ecc_save, ecc_load, s); + qemu_register_reset(ecc_reset, s); + ecc_reset(s); + return s; +} |