330 lines
11 KiB
C
330 lines
11 KiB
C
/*
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* QEMU Sparc Sun4m ECC memory controller emulation
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*
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* Copyright (c) 2007 Robert Reif
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "sysbus.h"
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#include "trace.h"
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/* There are 3 versions of this chip used in SMP sun4m systems:
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* MCC (version 0, implementation 0) SS-600MP
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* EMC (version 0, implementation 1) SS-10
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* SMC (version 0, implementation 2) SS-10SX and SS-20
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*
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* Chipset docs:
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* "Sun-4M System Architecture (revision 2.0) by Chuck Narad", 950-1373-01,
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* http://mediacast.sun.com/users/Barton808/media/Sun4M_SystemArchitecture_edited2.pdf
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*/
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#define ECC_MCC 0x00000000
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#define ECC_EMC 0x10000000
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#define ECC_SMC 0x20000000
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/* Register indexes */
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#define ECC_MER 0 /* Memory Enable Register */
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#define ECC_MDR 1 /* Memory Delay Register */
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#define ECC_MFSR 2 /* Memory Fault Status Register */
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#define ECC_VCR 3 /* Video Configuration Register */
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#define ECC_MFAR0 4 /* Memory Fault Address Register 0 */
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#define ECC_MFAR1 5 /* Memory Fault Address Register 1 */
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#define ECC_DR 6 /* Diagnostic Register */
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#define ECC_ECR0 7 /* Event Count Register 0 */
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#define ECC_ECR1 8 /* Event Count Register 1 */
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/* ECC fault control register */
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#define ECC_MER_EE 0x00000001 /* Enable ECC checking */
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#define ECC_MER_EI 0x00000002 /* Enable Interrupts on
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correctable errors */
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#define ECC_MER_MRR0 0x00000004 /* SIMM 0 */
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#define ECC_MER_MRR1 0x00000008 /* SIMM 1 */
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#define ECC_MER_MRR2 0x00000010 /* SIMM 2 */
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#define ECC_MER_MRR3 0x00000020 /* SIMM 3 */
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#define ECC_MER_MRR4 0x00000040 /* SIMM 4 */
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#define ECC_MER_MRR5 0x00000080 /* SIMM 5 */
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#define ECC_MER_MRR6 0x00000100 /* SIMM 6 */
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#define ECC_MER_MRR7 0x00000200 /* SIMM 7 */
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#define ECC_MER_REU 0x00000100 /* Memory Refresh Enable (600MP) */
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#define ECC_MER_MRR 0x000003fc /* MRR mask */
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#define ECC_MER_A 0x00000400 /* Memory controller addr map select */
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#define ECC_MER_DCI 0x00000800 /* Disables Coherent Invalidate ACK */
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#define ECC_MER_VER 0x0f000000 /* Version */
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#define ECC_MER_IMPL 0xf0000000 /* Implementation */
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#define ECC_MER_MASK_0 0x00000103 /* Version 0 (MCC) mask */
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#define ECC_MER_MASK_1 0x00000bff /* Version 1 (EMC) mask */
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#define ECC_MER_MASK_2 0x00000bff /* Version 2 (SMC) mask */
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/* ECC memory delay register */
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#define ECC_MDR_RRI 0x000003ff /* Refresh Request Interval */
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#define ECC_MDR_MI 0x00001c00 /* MIH Delay */
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#define ECC_MDR_CI 0x0000e000 /* Coherent Invalidate Delay */
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#define ECC_MDR_MDL 0x001f0000 /* MBus Master arbitration delay */
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#define ECC_MDR_MDH 0x03e00000 /* MBus Master arbitration delay */
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#define ECC_MDR_GAD 0x7c000000 /* Graphics Arbitration Delay */
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#define ECC_MDR_RSC 0x80000000 /* Refresh load control */
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#define ECC_MDR_MASK 0x7fffffff
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/* ECC fault status register */
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#define ECC_MFSR_CE 0x00000001 /* Correctable error */
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#define ECC_MFSR_BS 0x00000002 /* C2 graphics bad slot access */
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#define ECC_MFSR_TO 0x00000004 /* Timeout on write */
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#define ECC_MFSR_UE 0x00000008 /* Uncorrectable error */
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#define ECC_MFSR_DW 0x000000f0 /* Index of double word in block */
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#define ECC_MFSR_SYND 0x0000ff00 /* Syndrome for correctable error */
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#define ECC_MFSR_ME 0x00010000 /* Multiple errors */
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#define ECC_MFSR_C2ERR 0x00020000 /* C2 graphics error */
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/* ECC fault address register 0 */
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#define ECC_MFAR0_PADDR 0x0000000f /* PA[32-35] */
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#define ECC_MFAR0_TYPE 0x000000f0 /* Transaction type */
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#define ECC_MFAR0_SIZE 0x00000700 /* Transaction size */
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#define ECC_MFAR0_CACHE 0x00000800 /* Mapped cacheable */
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#define ECC_MFAR0_LOCK 0x00001000 /* Error occurred in atomic cycle */
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#define ECC_MFAR0_BMODE 0x00002000 /* Boot mode */
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#define ECC_MFAR0_VADDR 0x003fc000 /* VA[12-19] (superset bits) */
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#define ECC_MFAR0_S 0x08000000 /* Supervisor mode */
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#define ECC_MFARO_MID 0xf0000000 /* Module ID */
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/* ECC diagnostic register */
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#define ECC_DR_CBX 0x00000001
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#define ECC_DR_CB0 0x00000002
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#define ECC_DR_CB1 0x00000004
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#define ECC_DR_CB2 0x00000008
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#define ECC_DR_CB4 0x00000010
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#define ECC_DR_CB8 0x00000020
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#define ECC_DR_CB16 0x00000040
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#define ECC_DR_CB32 0x00000080
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#define ECC_DR_DMODE 0x00000c00
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#define ECC_NREGS 9
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#define ECC_SIZE (ECC_NREGS * sizeof(uint32_t))
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#define ECC_DIAG_SIZE 4
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#define ECC_DIAG_MASK (ECC_DIAG_SIZE - 1)
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typedef struct ECCState {
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SysBusDevice busdev;
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MemoryRegion iomem, iomem_diag;
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qemu_irq irq;
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uint32_t regs[ECC_NREGS];
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uint8_t diag[ECC_DIAG_SIZE];
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uint32_t version;
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} ECCState;
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static void ecc_mem_write(void *opaque, target_phys_addr_t addr, uint64_t val,
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unsigned size)
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{
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ECCState *s = opaque;
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switch (addr >> 2) {
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case ECC_MER:
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if (s->version == ECC_MCC)
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s->regs[ECC_MER] = (val & ECC_MER_MASK_0);
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else if (s->version == ECC_EMC)
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s->regs[ECC_MER] = s->version | (val & ECC_MER_MASK_1);
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else if (s->version == ECC_SMC)
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s->regs[ECC_MER] = s->version | (val & ECC_MER_MASK_2);
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trace_ecc_mem_writel_mer(val);
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break;
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case ECC_MDR:
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s->regs[ECC_MDR] = val & ECC_MDR_MASK;
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trace_ecc_mem_writel_mdr(val);
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break;
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case ECC_MFSR:
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s->regs[ECC_MFSR] = val;
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qemu_irq_lower(s->irq);
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trace_ecc_mem_writel_mfsr(val);
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break;
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case ECC_VCR:
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s->regs[ECC_VCR] = val;
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trace_ecc_mem_writel_vcr(val);
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break;
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case ECC_DR:
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s->regs[ECC_DR] = val;
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trace_ecc_mem_writel_dr(val);
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break;
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case ECC_ECR0:
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s->regs[ECC_ECR0] = val;
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trace_ecc_mem_writel_ecr0(val);
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break;
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case ECC_ECR1:
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s->regs[ECC_ECR0] = val;
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trace_ecc_mem_writel_ecr1(val);
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break;
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}
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}
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static uint64_t ecc_mem_read(void *opaque, target_phys_addr_t addr,
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unsigned size)
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{
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ECCState *s = opaque;
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uint32_t ret = 0;
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switch (addr >> 2) {
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case ECC_MER:
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ret = s->regs[ECC_MER];
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trace_ecc_mem_readl_mer(ret);
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break;
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case ECC_MDR:
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ret = s->regs[ECC_MDR];
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trace_ecc_mem_readl_mdr(ret);
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break;
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case ECC_MFSR:
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ret = s->regs[ECC_MFSR];
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trace_ecc_mem_readl_mfsr(ret);
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break;
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case ECC_VCR:
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ret = s->regs[ECC_VCR];
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trace_ecc_mem_readl_vcr(ret);
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break;
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case ECC_MFAR0:
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ret = s->regs[ECC_MFAR0];
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trace_ecc_mem_readl_mfar0(ret);
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break;
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case ECC_MFAR1:
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ret = s->regs[ECC_MFAR1];
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trace_ecc_mem_readl_mfar1(ret);
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break;
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case ECC_DR:
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ret = s->regs[ECC_DR];
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trace_ecc_mem_readl_dr(ret);
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break;
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case ECC_ECR0:
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ret = s->regs[ECC_ECR0];
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trace_ecc_mem_readl_ecr0(ret);
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break;
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case ECC_ECR1:
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ret = s->regs[ECC_ECR0];
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trace_ecc_mem_readl_ecr1(ret);
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break;
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}
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return ret;
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}
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static const MemoryRegionOps ecc_mem_ops = {
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.read = ecc_mem_read,
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.write = ecc_mem_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 4,
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.max_access_size = 4,
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},
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};
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static void ecc_diag_mem_write(void *opaque, target_phys_addr_t addr,
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uint64_t val, unsigned size)
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{
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ECCState *s = opaque;
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trace_ecc_diag_mem_writeb(addr, val);
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s->diag[addr & ECC_DIAG_MASK] = val;
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}
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static uint64_t ecc_diag_mem_read(void *opaque, target_phys_addr_t addr,
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unsigned size)
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{
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ECCState *s = opaque;
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uint32_t ret = s->diag[(int)addr];
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trace_ecc_diag_mem_readb(addr, ret);
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return ret;
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}
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static const MemoryRegionOps ecc_diag_mem_ops = {
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.read = ecc_diag_mem_read,
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.write = ecc_diag_mem_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1,
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},
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};
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static const VMStateDescription vmstate_ecc = {
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.name ="ECC",
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.version_id = 3,
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.minimum_version_id = 3,
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.minimum_version_id_old = 3,
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.fields = (VMStateField []) {
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VMSTATE_UINT32_ARRAY(regs, ECCState, ECC_NREGS),
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VMSTATE_BUFFER(diag, ECCState),
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VMSTATE_UINT32(version, ECCState),
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VMSTATE_END_OF_LIST()
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}
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};
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static void ecc_reset(DeviceState *d)
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{
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ECCState *s = container_of(d, ECCState, busdev.qdev);
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if (s->version == ECC_MCC)
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s->regs[ECC_MER] &= ECC_MER_REU;
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else
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s->regs[ECC_MER] &= (ECC_MER_VER | ECC_MER_IMPL | ECC_MER_MRR |
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ECC_MER_DCI);
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s->regs[ECC_MDR] = 0x20;
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s->regs[ECC_MFSR] = 0;
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s->regs[ECC_VCR] = 0;
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s->regs[ECC_MFAR0] = 0x07c00000;
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s->regs[ECC_MFAR1] = 0;
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s->regs[ECC_DR] = 0;
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s->regs[ECC_ECR0] = 0;
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s->regs[ECC_ECR1] = 0;
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}
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static int ecc_init1(SysBusDevice *dev)
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{
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ECCState *s = FROM_SYSBUS(ECCState, dev);
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sysbus_init_irq(dev, &s->irq);
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s->regs[0] = s->version;
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memory_region_init_io(&s->iomem, &ecc_mem_ops, s, "ecc", ECC_SIZE);
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sysbus_init_mmio(dev, &s->iomem);
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if (s->version == ECC_MCC) { // SS-600MP only
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memory_region_init_io(&s->iomem_diag, &ecc_diag_mem_ops, s,
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"ecc.diag", ECC_DIAG_SIZE);
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sysbus_init_mmio(dev, &s->iomem_diag);
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}
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return 0;
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}
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static SysBusDeviceInfo ecc_info = {
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.init = ecc_init1,
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.qdev.name = "eccmemctl",
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.qdev.size = sizeof(ECCState),
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.qdev.vmsd = &vmstate_ecc,
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.qdev.reset = ecc_reset,
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.qdev.props = (Property[]) {
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DEFINE_PROP_HEX32("version", ECCState, version, -1),
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DEFINE_PROP_END_OF_LIST(),
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}
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};
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static void ecc_register_devices(void)
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{
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sysbus_register_withprop(&ecc_info);
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}
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device_init(ecc_register_devices)
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