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/*
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* QEMU LSI53C895A SCSI Host Bus Adapter emulation
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*
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* Copyright (c) 2006 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licenced under the LGPL.
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*/
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/* ??? Need to check if the {read,write}[wl] routines work properly on
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big-endian targets. */
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#include <assert.h> |
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|
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#include "hw.h" |
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#include "pci.h" |
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#include "scsi.h" |
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#include "block_int.h" |
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|
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//#define DEBUG_LSI
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//#define DEBUG_LSI_REG
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#ifdef DEBUG_LSI
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#define DPRINTF(fmt, ...) \
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do { printf("lsi_scsi: " fmt , ## __VA_ARGS__); } while (0) |
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "lsi_scsi: error: " fmt , ## __VA_ARGS__); exit(1);} while (0) |
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#else
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#define DPRINTF(fmt, ...) do {} while(0) |
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "lsi_scsi: error: " fmt , ## __VA_ARGS__);} while (0) |
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#endif
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|
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#define LSI_MAX_DEVS 7 |
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#define LSI_SCNTL0_TRG 0x01 |
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#define LSI_SCNTL0_AAP 0x02 |
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#define LSI_SCNTL0_EPC 0x08 |
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#define LSI_SCNTL0_WATN 0x10 |
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#define LSI_SCNTL0_START 0x20 |
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|
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#define LSI_SCNTL1_SST 0x01 |
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#define LSI_SCNTL1_IARB 0x02 |
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#define LSI_SCNTL1_AESP 0x04 |
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#define LSI_SCNTL1_RST 0x08 |
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#define LSI_SCNTL1_CON 0x10 |
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#define LSI_SCNTL1_DHP 0x20 |
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#define LSI_SCNTL1_ADB 0x40 |
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#define LSI_SCNTL1_EXC 0x80 |
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|
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#define LSI_SCNTL2_WSR 0x01 |
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#define LSI_SCNTL2_VUE0 0x02 |
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#define LSI_SCNTL2_VUE1 0x04 |
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#define LSI_SCNTL2_WSS 0x08 |
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#define LSI_SCNTL2_SLPHBEN 0x10 |
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#define LSI_SCNTL2_SLPMD 0x20 |
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#define LSI_SCNTL2_CHM 0x40 |
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#define LSI_SCNTL2_SDU 0x80 |
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|
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#define LSI_ISTAT0_DIP 0x01 |
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#define LSI_ISTAT0_SIP 0x02 |
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#define LSI_ISTAT0_INTF 0x04 |
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#define LSI_ISTAT0_CON 0x08 |
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#define LSI_ISTAT0_SEM 0x10 |
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#define LSI_ISTAT0_SIGP 0x20 |
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#define LSI_ISTAT0_SRST 0x40 |
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#define LSI_ISTAT0_ABRT 0x80 |
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|
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#define LSI_ISTAT1_SI 0x01 |
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#define LSI_ISTAT1_SRUN 0x02 |
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#define LSI_ISTAT1_FLSH 0x04 |
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#define LSI_SSTAT0_SDP0 0x01 |
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#define LSI_SSTAT0_RST 0x02 |
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#define LSI_SSTAT0_WOA 0x04 |
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#define LSI_SSTAT0_LOA 0x08 |
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#define LSI_SSTAT0_AIP 0x10 |
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#define LSI_SSTAT0_OLF 0x20 |
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#define LSI_SSTAT0_ORF 0x40 |
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#define LSI_SSTAT0_ILF 0x80 |
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|
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#define LSI_SIST0_PAR 0x01 |
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#define LSI_SIST0_RST 0x02 |
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#define LSI_SIST0_UDC 0x04 |
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#define LSI_SIST0_SGE 0x08 |
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#define LSI_SIST0_RSL 0x10 |
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#define LSI_SIST0_SEL 0x20 |
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#define LSI_SIST0_CMP 0x40 |
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#define LSI_SIST0_MA 0x80 |
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|
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#define LSI_SIST1_HTH 0x01 |
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#define LSI_SIST1_GEN 0x02 |
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#define LSI_SIST1_STO 0x04 |
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#define LSI_SIST1_SBMC 0x10 |
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|
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#define LSI_SOCL_IO 0x01 |
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#define LSI_SOCL_CD 0x02 |
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#define LSI_SOCL_MSG 0x04 |
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#define LSI_SOCL_ATN 0x08 |
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#define LSI_SOCL_SEL 0x10 |
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#define LSI_SOCL_BSY 0x20 |
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#define LSI_SOCL_ACK 0x40 |
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#define LSI_SOCL_REQ 0x80 |
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|
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#define LSI_DSTAT_IID 0x01 |
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#define LSI_DSTAT_SIR 0x04 |
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#define LSI_DSTAT_SSI 0x08 |
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#define LSI_DSTAT_ABRT 0x10 |
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#define LSI_DSTAT_BF 0x20 |
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#define LSI_DSTAT_MDPE 0x40 |
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#define LSI_DSTAT_DFE 0x80 |
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#define LSI_DCNTL_COM 0x01 |
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#define LSI_DCNTL_IRQD 0x02 |
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#define LSI_DCNTL_STD 0x04 |
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#define LSI_DCNTL_IRQM 0x08 |
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#define LSI_DCNTL_SSM 0x10 |
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#define LSI_DCNTL_PFEN 0x20 |
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#define LSI_DCNTL_PFF 0x40 |
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#define LSI_DCNTL_CLSE 0x80 |
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|
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#define LSI_DMODE_MAN 0x01 |
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#define LSI_DMODE_BOF 0x02 |
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#define LSI_DMODE_ERMP 0x04 |
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#define LSI_DMODE_ERL 0x08 |
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#define LSI_DMODE_DIOM 0x10 |
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#define LSI_DMODE_SIOM 0x20 |
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#define LSI_CTEST2_DACK 0x01 |
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#define LSI_CTEST2_DREQ 0x02 |
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#define LSI_CTEST2_TEOP 0x04 |
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#define LSI_CTEST2_PCICIE 0x08 |
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#define LSI_CTEST2_CM 0x10 |
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#define LSI_CTEST2_CIO 0x20 |
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#define LSI_CTEST2_SIGP 0x40 |
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#define LSI_CTEST2_DDIR 0x80 |
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#define LSI_CTEST5_BL2 0x04 |
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#define LSI_CTEST5_DDIR 0x08 |
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#define LSI_CTEST5_MASR 0x10 |
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#define LSI_CTEST5_DFSN 0x20 |
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#define LSI_CTEST5_BBCK 0x40 |
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#define LSI_CTEST5_ADCK 0x80 |
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#define LSI_CCNTL0_DILS 0x01 |
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#define LSI_CCNTL0_DISFC 0x10 |
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#define LSI_CCNTL0_ENNDJ 0x20 |
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#define LSI_CCNTL0_PMJCTL 0x40 |
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#define LSI_CCNTL0_ENPMJ 0x80 |
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#define LSI_CCNTL1_EN64DBMV 0x01 |
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#define LSI_CCNTL1_EN64TIBMV 0x02 |
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#define LSI_CCNTL1_64TIMOD 0x04 |
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#define LSI_CCNTL1_DDAC 0x08 |
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#define LSI_CCNTL1_ZMOD 0x80 |
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/* Enable Response to Reselection */
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#define LSI_SCID_RRE 0x60 |
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#define LSI_CCNTL1_40BIT (LSI_CCNTL1_EN64TIBMV|LSI_CCNTL1_64TIMOD)
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#define PHASE_DO 0 |
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#define PHASE_DI 1 |
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#define PHASE_CMD 2 |
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#define PHASE_ST 3 |
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#define PHASE_MO 6 |
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#define PHASE_MI 7 |
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#define PHASE_MASK 7 |
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/* Maximum length of MSG IN data. */
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#define LSI_MAX_MSGIN_LEN 8 |
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/* Flag set if this is a tagged command. */
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#define LSI_TAG_VALID (1 << 16) |
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typedef struct { |
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uint32_t tag; |
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uint32_t pending; |
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int out;
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} lsi_queue; |
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typedef struct { |
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PCIDevice dev; |
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int mmio_io_addr;
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int ram_io_addr;
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uint32_t script_ram_base; |
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int carry; /* ??? Should this be an a visible register somewhere? */ |
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int sense;
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/* Action to take at the end of a MSG IN phase.
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0 = COMMAND, 1 = disconnect, 2 = DATA OUT, 3 = DATA IN. */
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int msg_action;
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int msg_len;
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uint8_t msg[LSI_MAX_MSGIN_LEN]; |
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/* 0 if SCRIPTS are running or stopped.
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* 1 if a Wait Reselect instruction has been issued.
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* 2 if processing DMA from lsi_execute_script.
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* 3 if a DMA operation is in progress. */
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int waiting;
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SCSIBus bus; |
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SCSIDevice *current_dev; |
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int current_lun;
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/* The tag is a combination of the device ID and the SCSI tag. */
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uint32_t current_tag; |
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uint32_t current_dma_len; |
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int command_complete;
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uint8_t *dma_buf; |
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lsi_queue *queue; |
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int queue_len;
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int active_commands;
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uint32_t dsa; |
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uint32_t temp; |
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uint32_t dnad; |
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uint32_t dbc; |
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uint8_t istat0; |
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uint8_t istat1; |
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uint8_t dcmd; |
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uint8_t dstat; |
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uint8_t dien; |
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uint8_t sist0; |
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uint8_t sist1; |
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uint8_t sien0; |
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uint8_t sien1; |
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uint8_t mbox0; |
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uint8_t mbox1; |
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uint8_t dfifo; |
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uint8_t ctest2; |
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uint8_t ctest3; |
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uint8_t ctest4; |
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uint8_t ctest5; |
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uint8_t ccntl0; |
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uint8_t ccntl1; |
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uint32_t dsp; |
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uint32_t dsps; |
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uint8_t dmode; |
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uint8_t dcntl; |
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uint8_t scntl0; |
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uint8_t scntl1; |
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uint8_t scntl2; |
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uint8_t scntl3; |
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uint8_t sstat0; |
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uint8_t sstat1; |
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uint8_t scid; |
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uint8_t sxfer; |
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uint8_t socl; |
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uint8_t sdid; |
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uint8_t ssid; |
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uint8_t sfbr; |
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uint8_t stest1; |
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uint8_t stest2; |
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uint8_t stest3; |
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uint8_t sidl; |
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uint8_t stime0; |
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uint8_t respid0; |
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uint8_t respid1; |
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uint32_t mmrs; |
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uint32_t mmws; |
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uint32_t sfs; |
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uint32_t drs; |
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uint32_t sbms; |
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uint32_t dbms; |
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uint32_t dnad64; |
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uint32_t pmjad1; |
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uint32_t pmjad2; |
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uint32_t rbc; |
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uint32_t ua; |
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uint32_t ia; |
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uint32_t sbc; |
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uint32_t csbc; |
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uint32_t scratch[18]; /* SCRATCHA-SCRATCHR */ |
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uint8_t sbr; |
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/* Script ram is stored as 32-bit words in host byteorder. */
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uint32_t script_ram[2048];
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} LSIState; |
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static inline int lsi_irq_on_rsl(LSIState *s) |
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{ |
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return (s->sien0 & LSI_SIST0_RSL) && (s->scid & LSI_SCID_RRE);
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} |
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static void lsi_soft_reset(LSIState *s) |
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{ |
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DPRINTF("Reset\n");
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s->carry = 0;
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s->waiting = 0;
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s->dsa = 0;
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s->dnad = 0;
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s->dbc = 0;
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s->temp = 0;
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memset(s->scratch, 0, sizeof(s->scratch)); |
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s->istat0 = 0;
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s->istat1 = 0;
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s->dcmd = 0;
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s->dstat = 0;
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s->dien = 0;
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s->sist0 = 0;
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s->sist1 = 0;
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s->sien0 = 0;
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s->sien1 = 0;
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s->mbox0 = 0;
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s->mbox1 = 0;
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s->dfifo = 0;
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s->ctest2 = 0;
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s->ctest3 = 0;
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s->ctest4 = 0;
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s->ctest5 = 0;
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s->ccntl0 = 0;
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s->ccntl1 = 0;
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s->dsp = 0;
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s->dsps = 0;
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s->dmode = 0;
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s->dcntl = 0;
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s->scntl0 = 0xc0;
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s->scntl1 = 0;
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s->scntl2 = 0;
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s->scntl3 = 0;
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s->sstat0 = 0;
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s->sstat1 = 0;
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s->scid = 7;
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s->sxfer = 0;
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s->socl = 0;
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s->stest1 = 0;
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s->stest2 = 0;
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s->stest3 = 0;
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s->sidl = 0;
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s->stime0 = 0;
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s->respid0 = 0x80;
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s->respid1 = 0;
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s->mmrs = 0;
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s->mmws = 0;
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s->sfs = 0;
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s->drs = 0;
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s->sbms = 0;
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s->dbms = 0;
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s->dnad64 = 0;
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s->pmjad1 = 0;
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s->pmjad2 = 0;
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s->rbc = 0;
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s->ua = 0;
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s->ia = 0;
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s->sbc = 0;
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s->csbc = 0;
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s->sbr = 0;
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} |
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|
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static int lsi_dma_40bit(LSIState *s) |
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{ |
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if ((s->ccntl1 & LSI_CCNTL1_40BIT) == LSI_CCNTL1_40BIT)
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return 1; |
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return 0; |
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} |
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|
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static int lsi_dma_ti64bit(LSIState *s) |
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{ |
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if ((s->ccntl1 & LSI_CCNTL1_EN64TIBMV) == LSI_CCNTL1_EN64TIBMV)
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return 1; |
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return 0; |
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} |
362 |
|
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static int lsi_dma_64bit(LSIState *s) |
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{ |
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if ((s->ccntl1 & LSI_CCNTL1_EN64DBMV) == LSI_CCNTL1_EN64DBMV)
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return 1; |
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return 0; |
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} |
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|
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static uint8_t lsi_reg_readb(LSIState *s, int offset); |
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static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val); |
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static void lsi_execute_script(LSIState *s); |
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static void lsi_reselect(LSIState *s, uint32_t tag); |
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|
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static inline uint32_t read_dword(LSIState *s, uint32_t addr) |
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{ |
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uint32_t buf; |
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|
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/* Optimize reading from SCRIPTS RAM. */
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if ((addr & 0xffffe000) == s->script_ram_base) { |
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return s->script_ram[(addr & 0x1fff) >> 2]; |
382 |
} |
383 |
cpu_physical_memory_read(addr, (uint8_t *)&buf, 4);
|
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return cpu_to_le32(buf);
|
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} |
386 |
|
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static void lsi_stop_script(LSIState *s) |
388 |
{ |
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s->istat1 &= ~LSI_ISTAT1_SRUN; |
390 |
} |
391 |
|
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static void lsi_update_irq(LSIState *s) |
393 |
{ |
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int i;
|
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int level;
|
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static int last_level; |
397 |
|
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/* It's unclear whether the DIP/SIP bits should be cleared when the
|
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Interrupt Status Registers are cleared or when istat0 is read.
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We currently do the formwer, which seems to work. */
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level = 0;
|
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if (s->dstat) {
|
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if (s->dstat & s->dien)
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level = 1;
|
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s->istat0 |= LSI_ISTAT0_DIP; |
406 |
} else {
|
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s->istat0 &= ~LSI_ISTAT0_DIP; |
408 |
} |
409 |
|
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if (s->sist0 || s->sist1) {
|
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if ((s->sist0 & s->sien0) || (s->sist1 & s->sien1))
|
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level = 1;
|
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s->istat0 |= LSI_ISTAT0_SIP; |
414 |
} else {
|
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s->istat0 &= ~LSI_ISTAT0_SIP; |
416 |
} |
417 |
if (s->istat0 & LSI_ISTAT0_INTF)
|
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level = 1;
|
419 |
|
420 |
if (level != last_level) {
|
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DPRINTF("Update IRQ level %d dstat %02x sist %02x%02x\n",
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422 |
level, s->dstat, s->sist1, s->sist0); |
423 |
last_level = level; |
424 |
} |
425 |
qemu_set_irq(s->dev.irq[0], level);
|
426 |
|
427 |
if (!level && lsi_irq_on_rsl(s) && !(s->scntl1 & LSI_SCNTL1_CON)) {
|
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DPRINTF("Handled IRQs & disconnected, looking for pending "
|
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"processes\n");
|
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for (i = 0; i < s->active_commands; i++) { |
431 |
if (s->queue[i].pending) {
|
432 |
lsi_reselect(s, s->queue[i].tag); |
433 |
break;
|
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} |
435 |
} |
436 |
} |
437 |
} |
438 |
|
439 |
/* Stop SCRIPTS execution and raise a SCSI interrupt. */
|
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static void lsi_script_scsi_interrupt(LSIState *s, int stat0, int stat1) |
441 |
{ |
442 |
uint32_t mask0; |
443 |
uint32_t mask1; |
444 |
|
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DPRINTF("SCSI Interrupt 0x%02x%02x prev 0x%02x%02x\n",
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stat1, stat0, s->sist1, s->sist0); |
447 |
s->sist0 |= stat0; |
448 |
s->sist1 |= stat1; |
449 |
/* Stop processor on fatal or unmasked interrupt. As a special hack
|
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we don't stop processing when raising STO. Instead continue
|
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execution and stop at the next insn that accesses the SCSI bus. */
|
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mask0 = s->sien0 | ~(LSI_SIST0_CMP | LSI_SIST0_SEL | LSI_SIST0_RSL); |
453 |
mask1 = s->sien1 | ~(LSI_SIST1_GEN | LSI_SIST1_HTH); |
454 |
mask1 &= ~LSI_SIST1_STO; |
455 |
if (s->sist0 & mask0 || s->sist1 & mask1) {
|
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lsi_stop_script(s); |
457 |
} |
458 |
lsi_update_irq(s); |
459 |
} |
460 |
|
461 |
/* Stop SCRIPTS execution and raise a DMA interrupt. */
|
462 |
static void lsi_script_dma_interrupt(LSIState *s, int stat) |
463 |
{ |
464 |
DPRINTF("DMA Interrupt 0x%x prev 0x%x\n", stat, s->dstat);
|
465 |
s->dstat |= stat; |
466 |
lsi_update_irq(s); |
467 |
lsi_stop_script(s); |
468 |
} |
469 |
|
470 |
static inline void lsi_set_phase(LSIState *s, int phase) |
471 |
{ |
472 |
s->sstat1 = (s->sstat1 & ~PHASE_MASK) | phase; |
473 |
} |
474 |
|
475 |
static void lsi_bad_phase(LSIState *s, int out, int new_phase) |
476 |
{ |
477 |
/* Trigger a phase mismatch. */
|
478 |
if (s->ccntl0 & LSI_CCNTL0_ENPMJ) {
|
479 |
if ((s->ccntl0 & LSI_CCNTL0_PMJCTL) || out) {
|
480 |
s->dsp = s->pmjad1; |
481 |
} else {
|
482 |
s->dsp = s->pmjad2; |
483 |
} |
484 |
DPRINTF("Data phase mismatch jump to %08x\n", s->dsp);
|
485 |
} else {
|
486 |
DPRINTF("Phase mismatch interrupt\n");
|
487 |
lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0);
|
488 |
lsi_stop_script(s); |
489 |
} |
490 |
lsi_set_phase(s, new_phase); |
491 |
} |
492 |
|
493 |
|
494 |
/* Resume SCRIPTS execution after a DMA operation. */
|
495 |
static void lsi_resume_script(LSIState *s) |
496 |
{ |
497 |
if (s->waiting != 2) { |
498 |
s->waiting = 0;
|
499 |
lsi_execute_script(s); |
500 |
} else {
|
501 |
s->waiting = 0;
|
502 |
} |
503 |
} |
504 |
|
505 |
/* Initiate a SCSI layer data transfer. */
|
506 |
static void lsi_do_dma(LSIState *s, int out) |
507 |
{ |
508 |
uint32_t count; |
509 |
target_phys_addr_t addr; |
510 |
|
511 |
if (!s->current_dma_len) {
|
512 |
/* Wait until data is available. */
|
513 |
DPRINTF("DMA no data available\n");
|
514 |
return;
|
515 |
} |
516 |
|
517 |
count = s->dbc; |
518 |
if (count > s->current_dma_len)
|
519 |
count = s->current_dma_len; |
520 |
|
521 |
addr = s->dnad; |
522 |
/* both 40 and Table Indirect 64-bit DMAs store upper bits in dnad64 */
|
523 |
if (lsi_dma_40bit(s) || lsi_dma_ti64bit(s))
|
524 |
addr |= ((uint64_t)s->dnad64 << 32);
|
525 |
else if (s->dbms) |
526 |
addr |= ((uint64_t)s->dbms << 32);
|
527 |
else if (s->sbms) |
528 |
addr |= ((uint64_t)s->sbms << 32);
|
529 |
|
530 |
DPRINTF("DMA addr=0x" TARGET_FMT_plx " len=%d\n", addr, count); |
531 |
s->csbc += count; |
532 |
s->dnad += count; |
533 |
s->dbc -= count; |
534 |
|
535 |
if (s->dma_buf == NULL) { |
536 |
s->dma_buf = s->current_dev->info->get_buf(s->current_dev, |
537 |
s->current_tag); |
538 |
} |
539 |
|
540 |
/* ??? Set SFBR to first data byte. */
|
541 |
if (out) {
|
542 |
cpu_physical_memory_read(addr, s->dma_buf, count); |
543 |
} else {
|
544 |
cpu_physical_memory_write(addr, s->dma_buf, count); |
545 |
} |
546 |
s->current_dma_len -= count; |
547 |
if (s->current_dma_len == 0) { |
548 |
s->dma_buf = NULL;
|
549 |
if (out) {
|
550 |
/* Write the data. */
|
551 |
s->current_dev->info->write_data(s->current_dev, s->current_tag); |
552 |
} else {
|
553 |
/* Request any remaining data. */
|
554 |
s->current_dev->info->read_data(s->current_dev, s->current_tag); |
555 |
} |
556 |
} else {
|
557 |
s->dma_buf += count; |
558 |
lsi_resume_script(s); |
559 |
} |
560 |
} |
561 |
|
562 |
|
563 |
/* Add a command to the queue. */
|
564 |
static void lsi_queue_command(LSIState *s) |
565 |
{ |
566 |
lsi_queue *p; |
567 |
|
568 |
DPRINTF("Queueing tag=0x%x\n", s->current_tag);
|
569 |
if (s->queue_len == s->active_commands) {
|
570 |
s->queue_len++; |
571 |
s->queue = qemu_realloc(s->queue, s->queue_len * sizeof(lsi_queue));
|
572 |
} |
573 |
p = &s->queue[s->active_commands++]; |
574 |
p->tag = s->current_tag; |
575 |
p->pending = 0;
|
576 |
p->out = (s->sstat1 & PHASE_MASK) == PHASE_DO; |
577 |
} |
578 |
|
579 |
/* Queue a byte for a MSG IN phase. */
|
580 |
static void lsi_add_msg_byte(LSIState *s, uint8_t data) |
581 |
{ |
582 |
if (s->msg_len >= LSI_MAX_MSGIN_LEN) {
|
583 |
BADF("MSG IN data too long\n");
|
584 |
} else {
|
585 |
DPRINTF("MSG IN 0x%02x\n", data);
|
586 |
s->msg[s->msg_len++] = data; |
587 |
} |
588 |
} |
589 |
|
590 |
/* Perform reselection to continue a command. */
|
591 |
static void lsi_reselect(LSIState *s, uint32_t tag) |
592 |
{ |
593 |
lsi_queue *p; |
594 |
int n;
|
595 |
int id;
|
596 |
|
597 |
p = NULL;
|
598 |
for (n = 0; n < s->active_commands; n++) { |
599 |
p = &s->queue[n]; |
600 |
if (p->tag == tag)
|
601 |
break;
|
602 |
} |
603 |
if (n == s->active_commands) {
|
604 |
BADF("Reselected non-existant command tag=0x%x\n", tag);
|
605 |
return;
|
606 |
} |
607 |
id = (tag >> 8) & 0xf; |
608 |
s->ssid = id | 0x80;
|
609 |
/* LSI53C700 Family Compatibility, see LSI53C895A 4-73 */
|
610 |
if (!s->dcntl & LSI_DCNTL_COM) {
|
611 |
s->sfbr = 1 << (id & 0x7); |
612 |
} |
613 |
DPRINTF("Reselected target %d\n", id);
|
614 |
s->current_dev = s->bus.devs[id]; |
615 |
s->current_tag = tag; |
616 |
s->scntl1 |= LSI_SCNTL1_CON; |
617 |
lsi_set_phase(s, PHASE_MI); |
618 |
s->msg_action = p->out ? 2 : 3; |
619 |
s->current_dma_len = p->pending; |
620 |
s->dma_buf = NULL;
|
621 |
lsi_add_msg_byte(s, 0x80);
|
622 |
if (s->current_tag & LSI_TAG_VALID) {
|
623 |
lsi_add_msg_byte(s, 0x20);
|
624 |
lsi_add_msg_byte(s, tag & 0xff);
|
625 |
} |
626 |
|
627 |
s->active_commands--; |
628 |
if (n != s->active_commands) {
|
629 |
s->queue[n] = s->queue[s->active_commands]; |
630 |
} |
631 |
|
632 |
if (lsi_irq_on_rsl(s)) {
|
633 |
lsi_script_scsi_interrupt(s, LSI_SIST0_RSL, 0);
|
634 |
} |
635 |
} |
636 |
|
637 |
/* Record that data is available for a queued command. Returns zero if
|
638 |
the device was reselected, nonzero if the IO is deferred. */
|
639 |
static int lsi_queue_tag(LSIState *s, uint32_t tag, uint32_t arg) |
640 |
{ |
641 |
lsi_queue *p; |
642 |
int i;
|
643 |
for (i = 0; i < s->active_commands; i++) { |
644 |
p = &s->queue[i]; |
645 |
if (p->tag == tag) {
|
646 |
if (p->pending) {
|
647 |
BADF("Multiple IO pending for tag %d\n", tag);
|
648 |
} |
649 |
p->pending = arg; |
650 |
/* Reselect if waiting for it, or if reselection triggers an IRQ
|
651 |
and the bus is free.
|
652 |
Since no interrupt stacking is implemented in the emulation, it
|
653 |
is also required that there are no pending interrupts waiting
|
654 |
for service from the device driver. */
|
655 |
if (s->waiting == 1 || |
656 |
(lsi_irq_on_rsl(s) && !(s->scntl1 & LSI_SCNTL1_CON) && |
657 |
!(s->istat0 & (LSI_ISTAT0_SIP | LSI_ISTAT0_DIP)))) { |
658 |
/* Reselect device. */
|
659 |
lsi_reselect(s, tag); |
660 |
return 0; |
661 |
} else {
|
662 |
DPRINTF("Queueing IO tag=0x%x\n", tag);
|
663 |
p->pending = arg; |
664 |
return 1; |
665 |
} |
666 |
} |
667 |
} |
668 |
BADF("IO with unknown tag %d\n", tag);
|
669 |
return 1; |
670 |
} |
671 |
|
672 |
/* Callback to indicate that the SCSI layer has completed a transfer. */
|
673 |
static void lsi_command_complete(SCSIBus *bus, int reason, uint32_t tag, |
674 |
uint32_t arg) |
675 |
{ |
676 |
LSIState *s = DO_UPCAST(LSIState, dev.qdev, bus->qbus.parent); |
677 |
int out;
|
678 |
|
679 |
out = (s->sstat1 & PHASE_MASK) == PHASE_DO; |
680 |
if (reason == SCSI_REASON_DONE) {
|
681 |
DPRINTF("Command complete sense=%d\n", (int)arg); |
682 |
s->sense = arg; |
683 |
s->command_complete = 2;
|
684 |
if (s->waiting && s->dbc != 0) { |
685 |
/* Raise phase mismatch for short transfers. */
|
686 |
lsi_bad_phase(s, out, PHASE_ST); |
687 |
} else {
|
688 |
lsi_set_phase(s, PHASE_ST); |
689 |
} |
690 |
lsi_resume_script(s); |
691 |
return;
|
692 |
} |
693 |
|
694 |
if (s->waiting == 1 || tag != s->current_tag || |
695 |
(lsi_irq_on_rsl(s) && !(s->scntl1 & LSI_SCNTL1_CON))) { |
696 |
if (lsi_queue_tag(s, tag, arg))
|
697 |
return;
|
698 |
} |
699 |
|
700 |
/* host adapter (re)connected */
|
701 |
DPRINTF("Data ready tag=0x%x len=%d\n", tag, arg);
|
702 |
s->current_dma_len = arg; |
703 |
s->command_complete = 1;
|
704 |
if (!s->waiting)
|
705 |
return;
|
706 |
if (s->waiting == 1 || s->dbc == 0) { |
707 |
lsi_resume_script(s); |
708 |
} else {
|
709 |
lsi_do_dma(s, out); |
710 |
} |
711 |
} |
712 |
|
713 |
static void lsi_do_command(LSIState *s) |
714 |
{ |
715 |
uint8_t buf[16];
|
716 |
int n;
|
717 |
|
718 |
DPRINTF("Send command len=%d\n", s->dbc);
|
719 |
if (s->dbc > 16) |
720 |
s->dbc = 16;
|
721 |
cpu_physical_memory_read(s->dnad, buf, s->dbc); |
722 |
s->sfbr = buf[0];
|
723 |
s->command_complete = 0;
|
724 |
n = s->current_dev->info->send_command(s->current_dev, s->current_tag, buf, |
725 |
s->current_lun); |
726 |
if (n > 0) { |
727 |
lsi_set_phase(s, PHASE_DI); |
728 |
s->current_dev->info->read_data(s->current_dev, s->current_tag); |
729 |
} else if (n < 0) { |
730 |
lsi_set_phase(s, PHASE_DO); |
731 |
s->current_dev->info->write_data(s->current_dev, s->current_tag); |
732 |
} |
733 |
|
734 |
if (!s->command_complete) {
|
735 |
if (n) {
|
736 |
/* Command did not complete immediately so disconnect. */
|
737 |
lsi_add_msg_byte(s, 2); /* SAVE DATA POINTER */ |
738 |
lsi_add_msg_byte(s, 4); /* DISCONNECT */ |
739 |
/* wait data */
|
740 |
lsi_set_phase(s, PHASE_MI); |
741 |
s->msg_action = 1;
|
742 |
lsi_queue_command(s); |
743 |
} else {
|
744 |
/* wait command complete */
|
745 |
lsi_set_phase(s, PHASE_DI); |
746 |
} |
747 |
} |
748 |
} |
749 |
|
750 |
static void lsi_do_status(LSIState *s) |
751 |
{ |
752 |
uint8_t sense; |
753 |
DPRINTF("Get status len=%d sense=%d\n", s->dbc, s->sense);
|
754 |
if (s->dbc != 1) |
755 |
BADF("Bad Status move\n");
|
756 |
s->dbc = 1;
|
757 |
sense = s->sense; |
758 |
s->sfbr = sense; |
759 |
cpu_physical_memory_write(s->dnad, &sense, 1);
|
760 |
lsi_set_phase(s, PHASE_MI); |
761 |
s->msg_action = 1;
|
762 |
lsi_add_msg_byte(s, 0); /* COMMAND COMPLETE */ |
763 |
} |
764 |
|
765 |
static void lsi_disconnect(LSIState *s) |
766 |
{ |
767 |
s->scntl1 &= ~LSI_SCNTL1_CON; |
768 |
s->sstat1 &= ~PHASE_MASK; |
769 |
} |
770 |
|
771 |
static void lsi_do_msgin(LSIState *s) |
772 |
{ |
773 |
int len;
|
774 |
DPRINTF("Message in len=%d/%d\n", s->dbc, s->msg_len);
|
775 |
s->sfbr = s->msg[0];
|
776 |
len = s->msg_len; |
777 |
if (len > s->dbc)
|
778 |
len = s->dbc; |
779 |
cpu_physical_memory_write(s->dnad, s->msg, len); |
780 |
/* Linux drivers rely on the last byte being in the SIDL. */
|
781 |
s->sidl = s->msg[len - 1];
|
782 |
s->msg_len -= len; |
783 |
if (s->msg_len) {
|
784 |
memmove(s->msg, s->msg + len, s->msg_len); |
785 |
} else {
|
786 |
/* ??? Check if ATN (not yet implemented) is asserted and maybe
|
787 |
switch to PHASE_MO. */
|
788 |
switch (s->msg_action) {
|
789 |
case 0: |
790 |
lsi_set_phase(s, PHASE_CMD); |
791 |
break;
|
792 |
case 1: |
793 |
lsi_disconnect(s); |
794 |
break;
|
795 |
case 2: |
796 |
lsi_set_phase(s, PHASE_DO); |
797 |
break;
|
798 |
case 3: |
799 |
lsi_set_phase(s, PHASE_DI); |
800 |
break;
|
801 |
default:
|
802 |
abort(); |
803 |
} |
804 |
} |
805 |
} |
806 |
|
807 |
/* Read the next byte during a MSGOUT phase. */
|
808 |
static uint8_t lsi_get_msgbyte(LSIState *s)
|
809 |
{ |
810 |
uint8_t data; |
811 |
cpu_physical_memory_read(s->dnad, &data, 1);
|
812 |
s->dnad++; |
813 |
s->dbc--; |
814 |
return data;
|
815 |
} |
816 |
|
817 |
static void lsi_do_msgout(LSIState *s) |
818 |
{ |
819 |
uint8_t msg; |
820 |
int len;
|
821 |
|
822 |
DPRINTF("MSG out len=%d\n", s->dbc);
|
823 |
while (s->dbc) {
|
824 |
msg = lsi_get_msgbyte(s); |
825 |
s->sfbr = msg; |
826 |
|
827 |
switch (msg) {
|
828 |
case 0x04: |
829 |
DPRINTF("MSG: Disconnect\n");
|
830 |
lsi_disconnect(s); |
831 |
break;
|
832 |
case 0x08: |
833 |
DPRINTF("MSG: No Operation\n");
|
834 |
lsi_set_phase(s, PHASE_CMD); |
835 |
break;
|
836 |
case 0x01: |
837 |
len = lsi_get_msgbyte(s); |
838 |
msg = lsi_get_msgbyte(s); |
839 |
DPRINTF("Extended message 0x%x (len %d)\n", msg, len);
|
840 |
switch (msg) {
|
841 |
case 1: |
842 |
DPRINTF("SDTR (ignored)\n");
|
843 |
s->dbc -= 2;
|
844 |
break;
|
845 |
case 3: |
846 |
DPRINTF("WDTR (ignored)\n");
|
847 |
s->dbc -= 1;
|
848 |
break;
|
849 |
default:
|
850 |
goto bad;
|
851 |
} |
852 |
break;
|
853 |
case 0x20: /* SIMPLE queue */ |
854 |
s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; |
855 |
DPRINTF("SIMPLE queue tag=0x%x\n", s->current_tag & 0xff); |
856 |
break;
|
857 |
case 0x21: /* HEAD of queue */ |
858 |
BADF("HEAD queue not implemented\n");
|
859 |
s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; |
860 |
break;
|
861 |
case 0x22: /* ORDERED queue */ |
862 |
BADF("ORDERED queue not implemented\n");
|
863 |
s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; |
864 |
break;
|
865 |
default:
|
866 |
if ((msg & 0x80) == 0) { |
867 |
goto bad;
|
868 |
} |
869 |
s->current_lun = msg & 7;
|
870 |
DPRINTF("Select LUN %d\n", s->current_lun);
|
871 |
lsi_set_phase(s, PHASE_CMD); |
872 |
break;
|
873 |
} |
874 |
} |
875 |
return;
|
876 |
bad:
|
877 |
BADF("Unimplemented message 0x%02x\n", msg);
|
878 |
lsi_set_phase(s, PHASE_MI); |
879 |
lsi_add_msg_byte(s, 7); /* MESSAGE REJECT */ |
880 |
s->msg_action = 0;
|
881 |
} |
882 |
|
883 |
/* Sign extend a 24-bit value. */
|
884 |
static inline int32_t sxt24(int32_t n) |
885 |
{ |
886 |
return (n << 8) >> 8; |
887 |
} |
888 |
|
889 |
#define LSI_BUF_SIZE 4096 |
890 |
static void lsi_memcpy(LSIState *s, uint32_t dest, uint32_t src, int count) |
891 |
{ |
892 |
int n;
|
893 |
uint8_t buf[LSI_BUF_SIZE]; |
894 |
|
895 |
DPRINTF("memcpy dest 0x%08x src 0x%08x count %d\n", dest, src, count);
|
896 |
while (count) {
|
897 |
n = (count > LSI_BUF_SIZE) ? LSI_BUF_SIZE : count; |
898 |
cpu_physical_memory_read(src, buf, n); |
899 |
cpu_physical_memory_write(dest, buf, n); |
900 |
src += n; |
901 |
dest += n; |
902 |
count -= n; |
903 |
} |
904 |
} |
905 |
|
906 |
static void lsi_wait_reselect(LSIState *s) |
907 |
{ |
908 |
int i;
|
909 |
DPRINTF("Wait Reselect\n");
|
910 |
if (s->current_dma_len)
|
911 |
BADF("Reselect with pending DMA\n");
|
912 |
for (i = 0; i < s->active_commands; i++) { |
913 |
if (s->queue[i].pending) {
|
914 |
lsi_reselect(s, s->queue[i].tag); |
915 |
break;
|
916 |
} |
917 |
} |
918 |
if (s->current_dma_len == 0) { |
919 |
s->waiting = 1;
|
920 |
} |
921 |
} |
922 |
|
923 |
static void lsi_execute_script(LSIState *s) |
924 |
{ |
925 |
uint32_t insn; |
926 |
uint32_t addr, addr_high; |
927 |
int opcode;
|
928 |
int insn_processed = 0; |
929 |
|
930 |
s->istat1 |= LSI_ISTAT1_SRUN; |
931 |
again:
|
932 |
insn_processed++; |
933 |
insn = read_dword(s, s->dsp); |
934 |
if (!insn) {
|
935 |
/* If we receive an empty opcode increment the DSP by 4 bytes
|
936 |
instead of 8 and execute the next opcode at that location */
|
937 |
s->dsp += 4;
|
938 |
goto again;
|
939 |
} |
940 |
addr = read_dword(s, s->dsp + 4);
|
941 |
addr_high = 0;
|
942 |
DPRINTF("SCRIPTS dsp=%08x opcode %08x arg %08x\n", s->dsp, insn, addr);
|
943 |
s->dsps = addr; |
944 |
s->dcmd = insn >> 24;
|
945 |
s->dsp += 8;
|
946 |
switch (insn >> 30) { |
947 |
case 0: /* Block move. */ |
948 |
if (s->sist1 & LSI_SIST1_STO) {
|
949 |
DPRINTF("Delayed select timeout\n");
|
950 |
lsi_stop_script(s); |
951 |
break;
|
952 |
} |
953 |
s->dbc = insn & 0xffffff;
|
954 |
s->rbc = s->dbc; |
955 |
/* ??? Set ESA. */
|
956 |
s->ia = s->dsp - 8;
|
957 |
if (insn & (1 << 29)) { |
958 |
/* Indirect addressing. */
|
959 |
addr = read_dword(s, addr); |
960 |
} else if (insn & (1 << 28)) { |
961 |
uint32_t buf[2];
|
962 |
int32_t offset; |
963 |
/* Table indirect addressing. */
|
964 |
|
965 |
/* 32-bit Table indirect */
|
966 |
offset = sxt24(addr); |
967 |
cpu_physical_memory_read(s->dsa + offset, (uint8_t *)buf, 8);
|
968 |
/* byte count is stored in bits 0:23 only */
|
969 |
s->dbc = cpu_to_le32(buf[0]) & 0xffffff; |
970 |
s->rbc = s->dbc; |
971 |
addr = cpu_to_le32(buf[1]);
|
972 |
|
973 |
/* 40-bit DMA, upper addr bits [39:32] stored in first DWORD of
|
974 |
* table, bits [31:24] */
|
975 |
if (lsi_dma_40bit(s))
|
976 |
addr_high = cpu_to_le32(buf[0]) >> 24; |
977 |
else if (lsi_dma_ti64bit(s)) { |
978 |
int selector = (cpu_to_le32(buf[0]) >> 24) & 0x1f; |
979 |
switch (selector) {
|
980 |
case 0 ... 0x0f: |
981 |
/* offset index into scratch registers since
|
982 |
* TI64 mode can use registers C to R */
|
983 |
addr_high = s->scratch[2 + selector];
|
984 |
break;
|
985 |
case 0x10: |
986 |
addr_high = s->mmrs; |
987 |
break;
|
988 |
case 0x11: |
989 |
addr_high = s->mmws; |
990 |
break;
|
991 |
case 0x12: |
992 |
addr_high = s->sfs; |
993 |
break;
|
994 |
case 0x13: |
995 |
addr_high = s->drs; |
996 |
break;
|
997 |
case 0x14: |
998 |
addr_high = s->sbms; |
999 |
break;
|
1000 |
case 0x15: |
1001 |
addr_high = s->dbms; |
1002 |
break;
|
1003 |
default:
|
1004 |
BADF("Illegal selector specified (0x%x > 0x15)"
|
1005 |
" for 64-bit DMA block move", selector);
|
1006 |
break;
|
1007 |
} |
1008 |
} |
1009 |
} else if (lsi_dma_64bit(s)) { |
1010 |
/* fetch a 3rd dword if 64-bit direct move is enabled and
|
1011 |
only if we're not doing table indirect or indirect addressing */
|
1012 |
s->dbms = read_dword(s, s->dsp); |
1013 |
s->dsp += 4;
|
1014 |
s->ia = s->dsp - 12;
|
1015 |
} |
1016 |
if ((s->sstat1 & PHASE_MASK) != ((insn >> 24) & 7)) { |
1017 |
DPRINTF("Wrong phase got %d expected %d\n",
|
1018 |
s->sstat1 & PHASE_MASK, (insn >> 24) & 7); |
1019 |
lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0);
|
1020 |
break;
|
1021 |
} |
1022 |
s->dnad = addr; |
1023 |
s->dnad64 = addr_high; |
1024 |
switch (s->sstat1 & 0x7) { |
1025 |
case PHASE_DO:
|
1026 |
s->waiting = 2;
|
1027 |
lsi_do_dma(s, 1);
|
1028 |
if (s->waiting)
|
1029 |
s->waiting = 3;
|
1030 |
break;
|
1031 |
case PHASE_DI:
|
1032 |
s->waiting = 2;
|
1033 |
lsi_do_dma(s, 0);
|
1034 |
if (s->waiting)
|
1035 |
s->waiting = 3;
|
1036 |
break;
|
1037 |
case PHASE_CMD:
|
1038 |
lsi_do_command(s); |
1039 |
break;
|
1040 |
case PHASE_ST:
|
1041 |
lsi_do_status(s); |
1042 |
break;
|
1043 |
case PHASE_MO:
|
1044 |
lsi_do_msgout(s); |
1045 |
break;
|
1046 |
case PHASE_MI:
|
1047 |
lsi_do_msgin(s); |
1048 |
break;
|
1049 |
default:
|
1050 |
BADF("Unimplemented phase %d\n", s->sstat1 & PHASE_MASK);
|
1051 |
exit(1);
|
1052 |
} |
1053 |
s->dfifo = s->dbc & 0xff;
|
1054 |
s->ctest5 = (s->ctest5 & 0xfc) | ((s->dbc >> 8) & 3); |
1055 |
s->sbc = s->dbc; |
1056 |
s->rbc -= s->dbc; |
1057 |
s->ua = addr + s->dbc; |
1058 |
break;
|
1059 |
|
1060 |
case 1: /* IO or Read/Write instruction. */ |
1061 |
opcode = (insn >> 27) & 7; |
1062 |
if (opcode < 5) { |
1063 |
uint32_t id; |
1064 |
|
1065 |
if (insn & (1 << 25)) { |
1066 |
id = read_dword(s, s->dsa + sxt24(insn)); |
1067 |
} else {
|
1068 |
id = insn; |
1069 |
} |
1070 |
id = (id >> 16) & 0xf; |
1071 |
if (insn & (1 << 26)) { |
1072 |
addr = s->dsp + sxt24(addr); |
1073 |
} |
1074 |
s->dnad = addr; |
1075 |
switch (opcode) {
|
1076 |
case 0: /* Select */ |
1077 |
s->sdid = id; |
1078 |
if (s->scntl1 & LSI_SCNTL1_CON) {
|
1079 |
DPRINTF("Already reselected, jumping to alternative address\n");
|
1080 |
s->dsp = s->dnad; |
1081 |
break;
|
1082 |
} |
1083 |
s->sstat0 |= LSI_SSTAT0_WOA; |
1084 |
s->scntl1 &= ~LSI_SCNTL1_IARB; |
1085 |
if (id >= LSI_MAX_DEVS || !s->bus.devs[id]) {
|
1086 |
DPRINTF("Selected absent target %d\n", id);
|
1087 |
lsi_script_scsi_interrupt(s, 0, LSI_SIST1_STO);
|
1088 |
lsi_disconnect(s); |
1089 |
break;
|
1090 |
} |
1091 |
DPRINTF("Selected target %d%s\n",
|
1092 |
id, insn & (1 << 3) ? " ATN" : ""); |
1093 |
/* ??? Linux drivers compain when this is set. Maybe
|
1094 |
it only applies in low-level mode (unimplemented).
|
1095 |
lsi_script_scsi_interrupt(s, LSI_SIST0_CMP, 0); */
|
1096 |
s->current_dev = s->bus.devs[id]; |
1097 |
s->current_tag = id << 8;
|
1098 |
s->scntl1 |= LSI_SCNTL1_CON; |
1099 |
if (insn & (1 << 3)) { |
1100 |
s->socl |= LSI_SOCL_ATN; |
1101 |
} |
1102 |
lsi_set_phase(s, PHASE_MO); |
1103 |
break;
|
1104 |
case 1: /* Disconnect */ |
1105 |
DPRINTF("Wait Disconnect\n");
|
1106 |
s->scntl1 &= ~LSI_SCNTL1_CON; |
1107 |
break;
|
1108 |
case 2: /* Wait Reselect */ |
1109 |
if (!lsi_irq_on_rsl(s)) {
|
1110 |
lsi_wait_reselect(s); |
1111 |
} |
1112 |
break;
|
1113 |
case 3: /* Set */ |
1114 |
DPRINTF("Set%s%s%s%s\n",
|
1115 |
insn & (1 << 3) ? " ATN" : "", |
1116 |
insn & (1 << 6) ? " ACK" : "", |
1117 |
insn & (1 << 9) ? " TM" : "", |
1118 |
insn & (1 << 10) ? " CC" : ""); |
1119 |
if (insn & (1 << 3)) { |
1120 |
s->socl |= LSI_SOCL_ATN; |
1121 |
lsi_set_phase(s, PHASE_MO); |
1122 |
} |
1123 |
if (insn & (1 << 9)) { |
1124 |
BADF("Target mode not implemented\n");
|
1125 |
exit(1);
|
1126 |
} |
1127 |
if (insn & (1 << 10)) |
1128 |
s->carry = 1;
|
1129 |
break;
|
1130 |
case 4: /* Clear */ |
1131 |
DPRINTF("Clear%s%s%s%s\n",
|
1132 |
insn & (1 << 3) ? " ATN" : "", |
1133 |
insn & (1 << 6) ? " ACK" : "", |
1134 |
insn & (1 << 9) ? " TM" : "", |
1135 |
insn & (1 << 10) ? " CC" : ""); |
1136 |
if (insn & (1 << 3)) { |
1137 |
s->socl &= ~LSI_SOCL_ATN; |
1138 |
} |
1139 |
if (insn & (1 << 10)) |
1140 |
s->carry = 0;
|
1141 |
break;
|
1142 |
} |
1143 |
} else {
|
1144 |
uint8_t op0; |
1145 |
uint8_t op1; |
1146 |
uint8_t data8; |
1147 |
int reg;
|
1148 |
int operator;
|
1149 |
#ifdef DEBUG_LSI
|
1150 |
static const char *opcode_names[3] = |
1151 |
{"Write", "Read", "Read-Modify-Write"}; |
1152 |
static const char *operator_names[8] = |
1153 |
{"MOV", "SHL", "OR", "XOR", "AND", "SHR", "ADD", "ADC"}; |
1154 |
#endif
|
1155 |
|
1156 |
reg = ((insn >> 16) & 0x7f) | (insn & 0x80); |
1157 |
data8 = (insn >> 8) & 0xff; |
1158 |
opcode = (insn >> 27) & 7; |
1159 |
operator = (insn >> 24) & 7; |
1160 |
DPRINTF("%s reg 0x%x %s data8=0x%02x sfbr=0x%02x%s\n",
|
1161 |
opcode_names[opcode - 5], reg,
|
1162 |
operator_names[operator], data8, s->sfbr, |
1163 |
(insn & (1 << 23)) ? " SFBR" : ""); |
1164 |
op0 = op1 = 0;
|
1165 |
switch (opcode) {
|
1166 |
case 5: /* From SFBR */ |
1167 |
op0 = s->sfbr; |
1168 |
op1 = data8; |
1169 |
break;
|
1170 |
case 6: /* To SFBR */ |
1171 |
if (operator)
|
1172 |
op0 = lsi_reg_readb(s, reg); |
1173 |
op1 = data8; |
1174 |
break;
|
1175 |
case 7: /* Read-modify-write */ |
1176 |
if (operator)
|
1177 |
op0 = lsi_reg_readb(s, reg); |
1178 |
if (insn & (1 << 23)) { |
1179 |
op1 = s->sfbr; |
1180 |
} else {
|
1181 |
op1 = data8; |
1182 |
} |
1183 |
break;
|
1184 |
} |
1185 |
|
1186 |
switch (operator) {
|
1187 |
case 0: /* move */ |
1188 |
op0 = op1; |
1189 |
break;
|
1190 |
case 1: /* Shift left */ |
1191 |
op1 = op0 >> 7;
|
1192 |
op0 = (op0 << 1) | s->carry;
|
1193 |
s->carry = op1; |
1194 |
break;
|
1195 |
case 2: /* OR */ |
1196 |
op0 |= op1; |
1197 |
break;
|
1198 |
case 3: /* XOR */ |
1199 |
op0 ^= op1; |
1200 |
break;
|
1201 |
case 4: /* AND */ |
1202 |
op0 &= op1; |
1203 |
break;
|
1204 |
case 5: /* SHR */ |
1205 |
op1 = op0 & 1;
|
1206 |
op0 = (op0 >> 1) | (s->carry << 7); |
1207 |
s->carry = op1; |
1208 |
break;
|
1209 |
case 6: /* ADD */ |
1210 |
op0 += op1; |
1211 |
s->carry = op0 < op1; |
1212 |
break;
|
1213 |
case 7: /* ADC */ |
1214 |
op0 += op1 + s->carry; |
1215 |
if (s->carry)
|
1216 |
s->carry = op0 <= op1; |
1217 |
else
|
1218 |
s->carry = op0 < op1; |
1219 |
break;
|
1220 |
} |
1221 |
|
1222 |
switch (opcode) {
|
1223 |
case 5: /* From SFBR */ |
1224 |
case 7: /* Read-modify-write */ |
1225 |
lsi_reg_writeb(s, reg, op0); |
1226 |
break;
|
1227 |
case 6: /* To SFBR */ |
1228 |
s->sfbr = op0; |
1229 |
break;
|
1230 |
} |
1231 |
} |
1232 |
break;
|
1233 |
|
1234 |
case 2: /* Transfer Control. */ |
1235 |
{ |
1236 |
int cond;
|
1237 |
int jmp;
|
1238 |
|
1239 |
if ((insn & 0x002e0000) == 0) { |
1240 |
DPRINTF("NOP\n");
|
1241 |
break;
|
1242 |
} |
1243 |
if (s->sist1 & LSI_SIST1_STO) {
|
1244 |
DPRINTF("Delayed select timeout\n");
|
1245 |
lsi_stop_script(s); |
1246 |
break;
|
1247 |
} |
1248 |
cond = jmp = (insn & (1 << 19)) != 0; |
1249 |
if (cond == jmp && (insn & (1 << 21))) { |
1250 |
DPRINTF("Compare carry %d\n", s->carry == jmp);
|
1251 |
cond = s->carry != 0;
|
1252 |
} |
1253 |
if (cond == jmp && (insn & (1 << 17))) { |
1254 |
DPRINTF("Compare phase %d %c= %d\n",
|
1255 |
(s->sstat1 & PHASE_MASK), |
1256 |
jmp ? '=' : '!', |
1257 |
((insn >> 24) & 7)); |
1258 |
cond = (s->sstat1 & PHASE_MASK) == ((insn >> 24) & 7); |
1259 |
} |
1260 |
if (cond == jmp && (insn & (1 << 18))) { |
1261 |
uint8_t mask; |
1262 |
|
1263 |
mask = (~insn >> 8) & 0xff; |
1264 |
DPRINTF("Compare data 0x%x & 0x%x %c= 0x%x\n",
|
1265 |
s->sfbr, mask, jmp ? '=' : '!', insn & mask); |
1266 |
cond = (s->sfbr & mask) == (insn & mask); |
1267 |
} |
1268 |
if (cond == jmp) {
|
1269 |
if (insn & (1 << 23)) { |
1270 |
/* Relative address. */
|
1271 |
addr = s->dsp + sxt24(addr); |
1272 |
} |
1273 |
switch ((insn >> 27) & 7) { |
1274 |
case 0: /* Jump */ |
1275 |
DPRINTF("Jump to 0x%08x\n", addr);
|
1276 |
s->dsp = addr; |
1277 |
break;
|
1278 |
case 1: /* Call */ |
1279 |
DPRINTF("Call 0x%08x\n", addr);
|
1280 |
s->temp = s->dsp; |
1281 |
s->dsp = addr; |
1282 |
break;
|
1283 |
case 2: /* Return */ |
1284 |
DPRINTF("Return to 0x%08x\n", s->temp);
|
1285 |
s->dsp = s->temp; |
1286 |
break;
|
1287 |
case 3: /* Interrupt */ |
1288 |
DPRINTF("Interrupt 0x%08x\n", s->dsps);
|
1289 |
if ((insn & (1 << 20)) != 0) { |
1290 |
s->istat0 |= LSI_ISTAT0_INTF; |
1291 |
lsi_update_irq(s); |
1292 |
} else {
|
1293 |
lsi_script_dma_interrupt(s, LSI_DSTAT_SIR); |
1294 |
} |
1295 |
break;
|
1296 |
default:
|
1297 |
DPRINTF("Illegal transfer control\n");
|
1298 |
lsi_script_dma_interrupt(s, LSI_DSTAT_IID); |
1299 |
break;
|
1300 |
} |
1301 |
} else {
|
1302 |
DPRINTF("Control condition failed\n");
|
1303 |
} |
1304 |
} |
1305 |
break;
|
1306 |
|
1307 |
case 3: |
1308 |
if ((insn & (1 << 29)) == 0) { |
1309 |
/* Memory move. */
|
1310 |
uint32_t dest; |
1311 |
/* ??? The docs imply the destination address is loaded into
|
1312 |
the TEMP register. However the Linux drivers rely on
|
1313 |
the value being presrved. */
|
1314 |
dest = read_dword(s, s->dsp); |
1315 |
s->dsp += 4;
|
1316 |
lsi_memcpy(s, dest, addr, insn & 0xffffff);
|
1317 |
} else {
|
1318 |
uint8_t data[7];
|
1319 |
int reg;
|
1320 |
int n;
|
1321 |
int i;
|
1322 |
|
1323 |
if (insn & (1 << 28)) { |
1324 |
addr = s->dsa + sxt24(addr); |
1325 |
} |
1326 |
n = (insn & 7);
|
1327 |
reg = (insn >> 16) & 0xff; |
1328 |
if (insn & (1 << 24)) { |
1329 |
cpu_physical_memory_read(addr, data, n); |
1330 |
DPRINTF("Load reg 0x%x size %d addr 0x%08x = %08x\n", reg, n,
|
1331 |
addr, *(int *)data);
|
1332 |
for (i = 0; i < n; i++) { |
1333 |
lsi_reg_writeb(s, reg + i, data[i]); |
1334 |
} |
1335 |
} else {
|
1336 |
DPRINTF("Store reg 0x%x size %d addr 0x%08x\n", reg, n, addr);
|
1337 |
for (i = 0; i < n; i++) { |
1338 |
data[i] = lsi_reg_readb(s, reg + i); |
1339 |
} |
1340 |
cpu_physical_memory_write(addr, data, n); |
1341 |
} |
1342 |
} |
1343 |
} |
1344 |
if (insn_processed > 10000 && !s->waiting) { |
1345 |
/* Some windows drivers make the device spin waiting for a memory
|
1346 |
location to change. If we have been executed a lot of code then
|
1347 |
assume this is the case and force an unexpected device disconnect.
|
1348 |
This is apparently sufficient to beat the drivers into submission.
|
1349 |
*/
|
1350 |
if (!(s->sien0 & LSI_SIST0_UDC))
|
1351 |
fprintf(stderr, "inf. loop with UDC masked\n");
|
1352 |
lsi_script_scsi_interrupt(s, LSI_SIST0_UDC, 0);
|
1353 |
lsi_disconnect(s); |
1354 |
} else if (s->istat1 & LSI_ISTAT1_SRUN && !s->waiting) { |
1355 |
if (s->dcntl & LSI_DCNTL_SSM) {
|
1356 |
lsi_script_dma_interrupt(s, LSI_DSTAT_SSI); |
1357 |
} else {
|
1358 |
goto again;
|
1359 |
} |
1360 |
} |
1361 |
DPRINTF("SCRIPTS execution stopped\n");
|
1362 |
} |
1363 |
|
1364 |
static uint8_t lsi_reg_readb(LSIState *s, int offset) |
1365 |
{ |
1366 |
uint8_t tmp; |
1367 |
#define CASE_GET_REG24(name, addr) \
|
1368 |
case addr: return s->name & 0xff; \ |
1369 |
case addr + 1: return (s->name >> 8) & 0xff; \ |
1370 |
case addr + 2: return (s->name >> 16) & 0xff; |
1371 |
|
1372 |
#define CASE_GET_REG32(name, addr) \
|
1373 |
case addr: return s->name & 0xff; \ |
1374 |
case addr + 1: return (s->name >> 8) & 0xff; \ |
1375 |
case addr + 2: return (s->name >> 16) & 0xff; \ |
1376 |
case addr + 3: return (s->name >> 24) & 0xff; |
1377 |
|
1378 |
#ifdef DEBUG_LSI_REG
|
1379 |
DPRINTF("Read reg %x\n", offset);
|
1380 |
#endif
|
1381 |
switch (offset) {
|
1382 |
case 0x00: /* SCNTL0 */ |
1383 |
return s->scntl0;
|
1384 |
case 0x01: /* SCNTL1 */ |
1385 |
return s->scntl1;
|
1386 |
case 0x02: /* SCNTL2 */ |
1387 |
return s->scntl2;
|
1388 |
case 0x03: /* SCNTL3 */ |
1389 |
return s->scntl3;
|
1390 |
case 0x04: /* SCID */ |
1391 |
return s->scid;
|
1392 |
case 0x05: /* SXFER */ |
1393 |
return s->sxfer;
|
1394 |
case 0x06: /* SDID */ |
1395 |
return s->sdid;
|
1396 |
case 0x07: /* GPREG0 */ |
1397 |
return 0x7f; |
1398 |
case 0x08: /* Revision ID */ |
1399 |
return 0x00; |
1400 |
case 0xa: /* SSID */ |
1401 |
return s->ssid;
|
1402 |
case 0xb: /* SBCL */ |
1403 |
/* ??? This is not correct. However it's (hopefully) only
|
1404 |
used for diagnostics, so should be ok. */
|
1405 |
return 0; |
1406 |
case 0xc: /* DSTAT */ |
1407 |
tmp = s->dstat | 0x80;
|
1408 |
if ((s->istat0 & LSI_ISTAT0_INTF) == 0) |
1409 |
s->dstat = 0;
|
1410 |
lsi_update_irq(s); |
1411 |
return tmp;
|
1412 |
case 0x0d: /* SSTAT0 */ |
1413 |
return s->sstat0;
|
1414 |
case 0x0e: /* SSTAT1 */ |
1415 |
return s->sstat1;
|
1416 |
case 0x0f: /* SSTAT2 */ |
1417 |
return s->scntl1 & LSI_SCNTL1_CON ? 0 : 2; |
1418 |
CASE_GET_REG32(dsa, 0x10)
|
1419 |
case 0x14: /* ISTAT0 */ |
1420 |
return s->istat0;
|
1421 |
case 0x15: /* ISTAT1 */ |
1422 |
return s->istat1;
|
1423 |
case 0x16: /* MBOX0 */ |
1424 |
return s->mbox0;
|
1425 |
case 0x17: /* MBOX1 */ |
1426 |
return s->mbox1;
|
1427 |
case 0x18: /* CTEST0 */ |
1428 |
return 0xff; |
1429 |
case 0x19: /* CTEST1 */ |
1430 |
return 0; |
1431 |
case 0x1a: /* CTEST2 */ |
1432 |
tmp = s->ctest2 | LSI_CTEST2_DACK | LSI_CTEST2_CM; |
1433 |
if (s->istat0 & LSI_ISTAT0_SIGP) {
|
1434 |
s->istat0 &= ~LSI_ISTAT0_SIGP; |
1435 |
tmp |= LSI_CTEST2_SIGP; |
1436 |
} |
1437 |
return tmp;
|
1438 |
case 0x1b: /* CTEST3 */ |
1439 |
return s->ctest3;
|
1440 |
CASE_GET_REG32(temp, 0x1c)
|
1441 |
case 0x20: /* DFIFO */ |
1442 |
return 0; |
1443 |
case 0x21: /* CTEST4 */ |
1444 |
return s->ctest4;
|
1445 |
case 0x22: /* CTEST5 */ |
1446 |
return s->ctest5;
|
1447 |
case 0x23: /* CTEST6 */ |
1448 |
return 0; |
1449 |
CASE_GET_REG24(dbc, 0x24)
|
1450 |
case 0x27: /* DCMD */ |
1451 |
return s->dcmd;
|
1452 |
CASE_GET_REG32(dnad, 0x28)
|
1453 |
CASE_GET_REG32(dsp, 0x2c)
|
1454 |
CASE_GET_REG32(dsps, 0x30)
|
1455 |
CASE_GET_REG32(scratch[0], 0x34) |
1456 |
case 0x38: /* DMODE */ |
1457 |
return s->dmode;
|
1458 |
case 0x39: /* DIEN */ |
1459 |
return s->dien;
|
1460 |
case 0x3a: /* SBR */ |
1461 |
return s->sbr;
|
1462 |
case 0x3b: /* DCNTL */ |
1463 |
return s->dcntl;
|
1464 |
case 0x40: /* SIEN0 */ |
1465 |
return s->sien0;
|
1466 |
case 0x41: /* SIEN1 */ |
1467 |
return s->sien1;
|
1468 |
case 0x42: /* SIST0 */ |
1469 |
tmp = s->sist0; |
1470 |
s->sist0 = 0;
|
1471 |
lsi_update_irq(s); |
1472 |
return tmp;
|
1473 |
case 0x43: /* SIST1 */ |
1474 |
tmp = s->sist1; |
1475 |
s->sist1 = 0;
|
1476 |
lsi_update_irq(s); |
1477 |
return tmp;
|
1478 |
case 0x46: /* MACNTL */ |
1479 |
return 0x0f; |
1480 |
case 0x47: /* GPCNTL0 */ |
1481 |
return 0x0f; |
1482 |
case 0x48: /* STIME0 */ |
1483 |
return s->stime0;
|
1484 |
case 0x4a: /* RESPID0 */ |
1485 |
return s->respid0;
|
1486 |
case 0x4b: /* RESPID1 */ |
1487 |
return s->respid1;
|
1488 |
case 0x4d: /* STEST1 */ |
1489 |
return s->stest1;
|
1490 |
case 0x4e: /* STEST2 */ |
1491 |
return s->stest2;
|
1492 |
case 0x4f: /* STEST3 */ |
1493 |
return s->stest3;
|
1494 |
case 0x50: /* SIDL */ |
1495 |
/* This is needed by the linux drivers. We currently only update it
|
1496 |
during the MSG IN phase. */
|
1497 |
return s->sidl;
|
1498 |
case 0x52: /* STEST4 */ |
1499 |
return 0xe0; |
1500 |
case 0x56: /* CCNTL0 */ |
1501 |
return s->ccntl0;
|
1502 |
case 0x57: /* CCNTL1 */ |
1503 |
return s->ccntl1;
|
1504 |
case 0x58: /* SBDL */ |
1505 |
/* Some drivers peek at the data bus during the MSG IN phase. */
|
1506 |
if ((s->sstat1 & PHASE_MASK) == PHASE_MI)
|
1507 |
return s->msg[0]; |
1508 |
return 0; |
1509 |
case 0x59: /* SBDL high */ |
1510 |
return 0; |
1511 |
CASE_GET_REG32(mmrs, 0xa0)
|
1512 |
CASE_GET_REG32(mmws, 0xa4)
|
1513 |
CASE_GET_REG32(sfs, 0xa8)
|
1514 |
CASE_GET_REG32(drs, 0xac)
|
1515 |
CASE_GET_REG32(sbms, 0xb0)
|
1516 |
CASE_GET_REG32(dbms, 0xb4)
|
1517 |
CASE_GET_REG32(dnad64, 0xb8)
|
1518 |
CASE_GET_REG32(pmjad1, 0xc0)
|
1519 |
CASE_GET_REG32(pmjad2, 0xc4)
|
1520 |
CASE_GET_REG32(rbc, 0xc8)
|
1521 |
CASE_GET_REG32(ua, 0xcc)
|
1522 |
CASE_GET_REG32(ia, 0xd4)
|
1523 |
CASE_GET_REG32(sbc, 0xd8)
|
1524 |
CASE_GET_REG32(csbc, 0xdc)
|
1525 |
} |
1526 |
if (offset >= 0x5c && offset < 0xa0) { |
1527 |
int n;
|
1528 |
int shift;
|
1529 |
n = (offset - 0x58) >> 2; |
1530 |
shift = (offset & 3) * 8; |
1531 |
return (s->scratch[n] >> shift) & 0xff; |
1532 |
} |
1533 |
BADF("readb 0x%x\n", offset);
|
1534 |
exit(1);
|
1535 |
#undef CASE_GET_REG24
|
1536 |
#undef CASE_GET_REG32
|
1537 |
} |
1538 |
|
1539 |
static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val) |
1540 |
{ |
1541 |
#define CASE_SET_REG24(name, addr) \
|
1542 |
case addr : s->name &= 0xffffff00; s->name |= val; break; \ |
1543 |
case addr + 1: s->name &= 0xffff00ff; s->name |= val << 8; break; \ |
1544 |
case addr + 2: s->name &= 0xff00ffff; s->name |= val << 16; break; |
1545 |
|
1546 |
#define CASE_SET_REG32(name, addr) \
|
1547 |
case addr : s->name &= 0xffffff00; s->name |= val; break; \ |
1548 |
case addr + 1: s->name &= 0xffff00ff; s->name |= val << 8; break; \ |
1549 |
case addr + 2: s->name &= 0xff00ffff; s->name |= val << 16; break; \ |
1550 |
case addr + 3: s->name &= 0x00ffffff; s->name |= val << 24; break; |
1551 |
|
1552 |
#ifdef DEBUG_LSI_REG
|
1553 |
DPRINTF("Write reg %x = %02x\n", offset, val);
|
1554 |
#endif
|
1555 |
switch (offset) {
|
1556 |
case 0x00: /* SCNTL0 */ |
1557 |
s->scntl0 = val; |
1558 |
if (val & LSI_SCNTL0_START) {
|
1559 |
BADF("Start sequence not implemented\n");
|
1560 |
} |
1561 |
break;
|
1562 |
case 0x01: /* SCNTL1 */ |
1563 |
s->scntl1 = val & ~LSI_SCNTL1_SST; |
1564 |
if (val & LSI_SCNTL1_IARB) {
|
1565 |
BADF("Immediate Arbritration not implemented\n");
|
1566 |
} |
1567 |
if (val & LSI_SCNTL1_RST) {
|
1568 |
s->sstat0 |= LSI_SSTAT0_RST; |
1569 |
lsi_script_scsi_interrupt(s, LSI_SIST0_RST, 0);
|
1570 |
} else {
|
1571 |
s->sstat0 &= ~LSI_SSTAT0_RST; |
1572 |
} |
1573 |
break;
|
1574 |
case 0x02: /* SCNTL2 */ |
1575 |
val &= ~(LSI_SCNTL2_WSR | LSI_SCNTL2_WSS); |
1576 |
s->scntl2 = val; |
1577 |
break;
|
1578 |
case 0x03: /* SCNTL3 */ |
1579 |
s->scntl3 = val; |
1580 |
break;
|
1581 |
case 0x04: /* SCID */ |
1582 |
s->scid = val; |
1583 |
break;
|
1584 |
case 0x05: /* SXFER */ |
1585 |
s->sxfer = val; |
1586 |
break;
|
1587 |
case 0x06: /* SDID */ |
1588 |
if ((val & 0xf) != (s->ssid & 0xf)) |
1589 |
BADF("Destination ID does not match SSID\n");
|
1590 |
s->sdid = val & 0xf;
|
1591 |
break;
|
1592 |
case 0x07: /* GPREG0 */ |
1593 |
break;
|
1594 |
case 0x08: /* SFBR */ |
1595 |
/* The CPU is not allowed to write to this register. However the
|
1596 |
SCRIPTS register move instructions are. */
|
1597 |
s->sfbr = val; |
1598 |
break;
|
1599 |
case 0x0a: case 0x0b: |
1600 |
/* Openserver writes to these readonly registers on startup */
|
1601 |
return;
|
1602 |
case 0x0c: case 0x0d: case 0x0e: case 0x0f: |
1603 |
/* Linux writes to these readonly registers on startup. */
|
1604 |
return;
|
1605 |
CASE_SET_REG32(dsa, 0x10)
|
1606 |
case 0x14: /* ISTAT0 */ |
1607 |
s->istat0 = (s->istat0 & 0x0f) | (val & 0xf0); |
1608 |
if (val & LSI_ISTAT0_ABRT) {
|
1609 |
lsi_script_dma_interrupt(s, LSI_DSTAT_ABRT); |
1610 |
} |
1611 |
if (val & LSI_ISTAT0_INTF) {
|
1612 |
s->istat0 &= ~LSI_ISTAT0_INTF; |
1613 |
lsi_update_irq(s); |
1614 |
} |
1615 |
if (s->waiting == 1 && val & LSI_ISTAT0_SIGP) { |
1616 |
DPRINTF("Woken by SIGP\n");
|
1617 |
s->waiting = 0;
|
1618 |
s->dsp = s->dnad; |
1619 |
lsi_execute_script(s); |
1620 |
} |
1621 |
if (val & LSI_ISTAT0_SRST) {
|
1622 |
lsi_soft_reset(s); |
1623 |
} |
1624 |
break;
|
1625 |
case 0x16: /* MBOX0 */ |
1626 |
s->mbox0 = val; |
1627 |
break;
|
1628 |
case 0x17: /* MBOX1 */ |
1629 |
s->mbox1 = val; |
1630 |
break;
|
1631 |
case 0x1a: /* CTEST2 */ |
1632 |
s->ctest2 = val & LSI_CTEST2_PCICIE; |
1633 |
break;
|
1634 |
case 0x1b: /* CTEST3 */ |
1635 |
s->ctest3 = val & 0x0f;
|
1636 |
break;
|
1637 |
CASE_SET_REG32(temp, 0x1c)
|
1638 |
case 0x21: /* CTEST4 */ |
1639 |
if (val & 7) { |
1640 |
BADF("Unimplemented CTEST4-FBL 0x%x\n", val);
|
1641 |
} |
1642 |
s->ctest4 = val; |
1643 |
break;
|
1644 |
case 0x22: /* CTEST5 */ |
1645 |
if (val & (LSI_CTEST5_ADCK | LSI_CTEST5_BBCK)) {
|
1646 |
BADF("CTEST5 DMA increment not implemented\n");
|
1647 |
} |
1648 |
s->ctest5 = val; |
1649 |
break;
|
1650 |
CASE_SET_REG24(dbc, 0x24)
|
1651 |
CASE_SET_REG32(dnad, 0x28)
|
1652 |
case 0x2c: /* DSP[0:7] */ |
1653 |
s->dsp &= 0xffffff00;
|
1654 |
s->dsp |= val; |
1655 |
break;
|
1656 |
case 0x2d: /* DSP[8:15] */ |
1657 |
s->dsp &= 0xffff00ff;
|
1658 |
s->dsp |= val << 8;
|
1659 |
break;
|
1660 |
case 0x2e: /* DSP[16:23] */ |
1661 |
s->dsp &= 0xff00ffff;
|
1662 |
s->dsp |= val << 16;
|
1663 |
break;
|
1664 |
case 0x2f: /* DSP[24:31] */ |
1665 |
s->dsp &= 0x00ffffff;
|
1666 |
s->dsp |= val << 24;
|
1667 |
if ((s->dmode & LSI_DMODE_MAN) == 0 |
1668 |
&& (s->istat1 & LSI_ISTAT1_SRUN) == 0)
|
1669 |
lsi_execute_script(s); |
1670 |
break;
|
1671 |
CASE_SET_REG32(dsps, 0x30)
|
1672 |
CASE_SET_REG32(scratch[0], 0x34) |
1673 |
case 0x38: /* DMODE */ |
1674 |
if (val & (LSI_DMODE_SIOM | LSI_DMODE_DIOM)) {
|
1675 |
BADF("IO mappings not implemented\n");
|
1676 |
} |
1677 |
s->dmode = val; |
1678 |
break;
|
1679 |
case 0x39: /* DIEN */ |
1680 |
s->dien = val; |
1681 |
lsi_update_irq(s); |
1682 |
break;
|
1683 |
case 0x3a: /* SBR */ |
1684 |
s->sbr = val; |
1685 |
break;
|
1686 |
case 0x3b: /* DCNTL */ |
1687 |
s->dcntl = val & ~(LSI_DCNTL_PFF | LSI_DCNTL_STD); |
1688 |
if ((val & LSI_DCNTL_STD) && (s->istat1 & LSI_ISTAT1_SRUN) == 0) |
1689 |
lsi_execute_script(s); |
1690 |
break;
|
1691 |
case 0x40: /* SIEN0 */ |
1692 |
s->sien0 = val; |
1693 |
lsi_update_irq(s); |
1694 |
break;
|
1695 |
case 0x41: /* SIEN1 */ |
1696 |
s->sien1 = val; |
1697 |
lsi_update_irq(s); |
1698 |
break;
|
1699 |
case 0x47: /* GPCNTL0 */ |
1700 |
break;
|
1701 |
case 0x48: /* STIME0 */ |
1702 |
s->stime0 = val; |
1703 |
break;
|
1704 |
case 0x49: /* STIME1 */ |
1705 |
if (val & 0xf) { |
1706 |
DPRINTF("General purpose timer not implemented\n");
|
1707 |
/* ??? Raising the interrupt immediately seems to be sufficient
|
1708 |
to keep the FreeBSD driver happy. */
|
1709 |
lsi_script_scsi_interrupt(s, 0, LSI_SIST1_GEN);
|
1710 |
} |
1711 |
break;
|
1712 |
case 0x4a: /* RESPID0 */ |
1713 |
s->respid0 = val; |
1714 |
break;
|
1715 |
case 0x4b: /* RESPID1 */ |
1716 |
s->respid1 = val; |
1717 |
break;
|
1718 |
case 0x4d: /* STEST1 */ |
1719 |
s->stest1 = val; |
1720 |
break;
|
1721 |
case 0x4e: /* STEST2 */ |
1722 |
if (val & 1) { |
1723 |
BADF("Low level mode not implemented\n");
|
1724 |
} |
1725 |
s->stest2 = val; |
1726 |
break;
|
1727 |
case 0x4f: /* STEST3 */ |
1728 |
if (val & 0x41) { |
1729 |
BADF("SCSI FIFO test mode not implemented\n");
|
1730 |
} |
1731 |
s->stest3 = val; |
1732 |
break;
|
1733 |
case 0x56: /* CCNTL0 */ |
1734 |
s->ccntl0 = val; |
1735 |
break;
|
1736 |
case 0x57: /* CCNTL1 */ |
1737 |
s->ccntl1 = val; |
1738 |
break;
|
1739 |
CASE_SET_REG32(mmrs, 0xa0)
|
1740 |
CASE_SET_REG32(mmws, 0xa4)
|
1741 |
CASE_SET_REG32(sfs, 0xa8)
|
1742 |
CASE_SET_REG32(drs, 0xac)
|
1743 |
CASE_SET_REG32(sbms, 0xb0)
|
1744 |
CASE_SET_REG32(dbms, 0xb4)
|
1745 |
CASE_SET_REG32(dnad64, 0xb8)
|
1746 |
CASE_SET_REG32(pmjad1, 0xc0)
|
1747 |
CASE_SET_REG32(pmjad2, 0xc4)
|
1748 |
CASE_SET_REG32(rbc, 0xc8)
|
1749 |
CASE_SET_REG32(ua, 0xcc)
|
1750 |
CASE_SET_REG32(ia, 0xd4)
|
1751 |
CASE_SET_REG32(sbc, 0xd8)
|
1752 |
CASE_SET_REG32(csbc, 0xdc)
|
1753 |
default:
|
1754 |
if (offset >= 0x5c && offset < 0xa0) { |
1755 |
int n;
|
1756 |
int shift;
|
1757 |
n = (offset - 0x58) >> 2; |
1758 |
shift = (offset & 3) * 8; |
1759 |
s->scratch[n] &= ~(0xff << shift);
|
1760 |
s->scratch[n] |= (val & 0xff) << shift;
|
1761 |
} else {
|
1762 |
BADF("Unhandled writeb 0x%x = 0x%x\n", offset, val);
|
1763 |
} |
1764 |
} |
1765 |
#undef CASE_SET_REG24
|
1766 |
#undef CASE_SET_REG32
|
1767 |
} |
1768 |
|
1769 |
static void lsi_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1770 |
{ |
1771 |
LSIState *s = opaque; |
1772 |
|
1773 |
lsi_reg_writeb(s, addr & 0xff, val);
|
1774 |
} |
1775 |
|
1776 |
static void lsi_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
1777 |
{ |
1778 |
LSIState *s = opaque; |
1779 |
|
1780 |
addr &= 0xff;
|
1781 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1782 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1783 |
} |
1784 |
|
1785 |
static void lsi_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
1786 |
{ |
1787 |
LSIState *s = opaque; |
1788 |
|
1789 |
addr &= 0xff;
|
1790 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1791 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1792 |
lsi_reg_writeb(s, addr + 2, (val >> 16) & 0xff); |
1793 |
lsi_reg_writeb(s, addr + 3, (val >> 24) & 0xff); |
1794 |
} |
1795 |
|
1796 |
static uint32_t lsi_mmio_readb(void *opaque, target_phys_addr_t addr) |
1797 |
{ |
1798 |
LSIState *s = opaque; |
1799 |
|
1800 |
return lsi_reg_readb(s, addr & 0xff); |
1801 |
} |
1802 |
|
1803 |
static uint32_t lsi_mmio_readw(void *opaque, target_phys_addr_t addr) |
1804 |
{ |
1805 |
LSIState *s = opaque; |
1806 |
uint32_t val; |
1807 |
|
1808 |
addr &= 0xff;
|
1809 |
val = lsi_reg_readb(s, addr); |
1810 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1811 |
return val;
|
1812 |
} |
1813 |
|
1814 |
static uint32_t lsi_mmio_readl(void *opaque, target_phys_addr_t addr) |
1815 |
{ |
1816 |
LSIState *s = opaque; |
1817 |
uint32_t val; |
1818 |
addr &= 0xff;
|
1819 |
val = lsi_reg_readb(s, addr); |
1820 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1821 |
val |= lsi_reg_readb(s, addr + 2) << 16; |
1822 |
val |= lsi_reg_readb(s, addr + 3) << 24; |
1823 |
return val;
|
1824 |
} |
1825 |
|
1826 |
static CPUReadMemoryFunc * const lsi_mmio_readfn[3] = { |
1827 |
lsi_mmio_readb, |
1828 |
lsi_mmio_readw, |
1829 |
lsi_mmio_readl, |
1830 |
}; |
1831 |
|
1832 |
static CPUWriteMemoryFunc * const lsi_mmio_writefn[3] = { |
1833 |
lsi_mmio_writeb, |
1834 |
lsi_mmio_writew, |
1835 |
lsi_mmio_writel, |
1836 |
}; |
1837 |
|
1838 |
static void lsi_ram_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1839 |
{ |
1840 |
LSIState *s = opaque; |
1841 |
uint32_t newval; |
1842 |
int shift;
|
1843 |
|
1844 |
addr &= 0x1fff;
|
1845 |
newval = s->script_ram[addr >> 2];
|
1846 |
shift = (addr & 3) * 8; |
1847 |
newval &= ~(0xff << shift);
|
1848 |
newval |= val << shift; |
1849 |
s->script_ram[addr >> 2] = newval;
|
1850 |
} |
1851 |
|
1852 |
static void lsi_ram_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
1853 |
{ |
1854 |
LSIState *s = opaque; |
1855 |
uint32_t newval; |
1856 |
|
1857 |
addr &= 0x1fff;
|
1858 |
newval = s->script_ram[addr >> 2];
|
1859 |
if (addr & 2) { |
1860 |
newval = (newval & 0xffff) | (val << 16); |
1861 |
} else {
|
1862 |
newval = (newval & 0xffff0000) | val;
|
1863 |
} |
1864 |
s->script_ram[addr >> 2] = newval;
|
1865 |
} |
1866 |
|
1867 |
|
1868 |
static void lsi_ram_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
1869 |
{ |
1870 |
LSIState *s = opaque; |
1871 |
|
1872 |
addr &= 0x1fff;
|
1873 |
s->script_ram[addr >> 2] = val;
|
1874 |
} |
1875 |
|
1876 |
static uint32_t lsi_ram_readb(void *opaque, target_phys_addr_t addr) |
1877 |
{ |
1878 |
LSIState *s = opaque; |
1879 |
uint32_t val; |
1880 |
|
1881 |
addr &= 0x1fff;
|
1882 |
val = s->script_ram[addr >> 2];
|
1883 |
val >>= (addr & 3) * 8; |
1884 |
return val & 0xff; |
1885 |
} |
1886 |
|
1887 |
static uint32_t lsi_ram_readw(void *opaque, target_phys_addr_t addr) |
1888 |
{ |
1889 |
LSIState *s = opaque; |
1890 |
uint32_t val; |
1891 |
|
1892 |
addr &= 0x1fff;
|
1893 |
val = s->script_ram[addr >> 2];
|
1894 |
if (addr & 2) |
1895 |
val >>= 16;
|
1896 |
return le16_to_cpu(val);
|
1897 |
} |
1898 |
|
1899 |
static uint32_t lsi_ram_readl(void *opaque, target_phys_addr_t addr) |
1900 |
{ |
1901 |
LSIState *s = opaque; |
1902 |
|
1903 |
addr &= 0x1fff;
|
1904 |
return le32_to_cpu(s->script_ram[addr >> 2]); |
1905 |
} |
1906 |
|
1907 |
static CPUReadMemoryFunc * const lsi_ram_readfn[3] = { |
1908 |
lsi_ram_readb, |
1909 |
lsi_ram_readw, |
1910 |
lsi_ram_readl, |
1911 |
}; |
1912 |
|
1913 |
static CPUWriteMemoryFunc * const lsi_ram_writefn[3] = { |
1914 |
lsi_ram_writeb, |
1915 |
lsi_ram_writew, |
1916 |
lsi_ram_writel, |
1917 |
}; |
1918 |
|
1919 |
static uint32_t lsi_io_readb(void *opaque, uint32_t addr) |
1920 |
{ |
1921 |
LSIState *s = opaque; |
1922 |
return lsi_reg_readb(s, addr & 0xff); |
1923 |
} |
1924 |
|
1925 |
static uint32_t lsi_io_readw(void *opaque, uint32_t addr) |
1926 |
{ |
1927 |
LSIState *s = opaque; |
1928 |
uint32_t val; |
1929 |
addr &= 0xff;
|
1930 |
val = lsi_reg_readb(s, addr); |
1931 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1932 |
return val;
|
1933 |
} |
1934 |
|
1935 |
static uint32_t lsi_io_readl(void *opaque, uint32_t addr) |
1936 |
{ |
1937 |
LSIState *s = opaque; |
1938 |
uint32_t val; |
1939 |
addr &= 0xff;
|
1940 |
val = lsi_reg_readb(s, addr); |
1941 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1942 |
val |= lsi_reg_readb(s, addr + 2) << 16; |
1943 |
val |= lsi_reg_readb(s, addr + 3) << 24; |
1944 |
return val;
|
1945 |
} |
1946 |
|
1947 |
static void lsi_io_writeb(void *opaque, uint32_t addr, uint32_t val) |
1948 |
{ |
1949 |
LSIState *s = opaque; |
1950 |
lsi_reg_writeb(s, addr & 0xff, val);
|
1951 |
} |
1952 |
|
1953 |
static void lsi_io_writew(void *opaque, uint32_t addr, uint32_t val) |
1954 |
{ |
1955 |
LSIState *s = opaque; |
1956 |
addr &= 0xff;
|
1957 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1958 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1959 |
} |
1960 |
|
1961 |
static void lsi_io_writel(void *opaque, uint32_t addr, uint32_t val) |
1962 |
{ |
1963 |
LSIState *s = opaque; |
1964 |
addr &= 0xff;
|
1965 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1966 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1967 |
lsi_reg_writeb(s, addr + 2, (val >> 16) & 0xff); |
1968 |
lsi_reg_writeb(s, addr + 3, (val >> 24) & 0xff); |
1969 |
} |
1970 |
|
1971 |
static void lsi_io_mapfunc(PCIDevice *pci_dev, int region_num, |
1972 |
pcibus_t addr, pcibus_t size, int type)
|
1973 |
{ |
1974 |
LSIState *s = DO_UPCAST(LSIState, dev, pci_dev); |
1975 |
|
1976 |
DPRINTF("Mapping IO at %08x\n", addr);
|
1977 |
|
1978 |
register_ioport_write(addr, 256, 1, lsi_io_writeb, s); |
1979 |
register_ioport_read(addr, 256, 1, lsi_io_readb, s); |
1980 |
register_ioport_write(addr, 256, 2, lsi_io_writew, s); |
1981 |
register_ioport_read(addr, 256, 2, lsi_io_readw, s); |
1982 |
register_ioport_write(addr, 256, 4, lsi_io_writel, s); |
1983 |
register_ioport_read(addr, 256, 4, lsi_io_readl, s); |
1984 |
} |
1985 |
|
1986 |
static void lsi_ram_mapfunc(PCIDevice *pci_dev, int region_num, |
1987 |
pcibus_t addr, pcibus_t size, int type)
|
1988 |
{ |
1989 |
LSIState *s = DO_UPCAST(LSIState, dev, pci_dev); |
1990 |
|
1991 |
DPRINTF("Mapping ram at %08x\n", addr);
|
1992 |
s->script_ram_base = addr; |
1993 |
cpu_register_physical_memory(addr + 0, 0x2000, s->ram_io_addr); |
1994 |
} |
1995 |
|
1996 |
static void lsi_mmio_mapfunc(PCIDevice *pci_dev, int region_num, |
1997 |
pcibus_t addr, pcibus_t size, int type)
|
1998 |
{ |
1999 |
LSIState *s = DO_UPCAST(LSIState, dev, pci_dev); |
2000 |
|
2001 |
DPRINTF("Mapping registers at %08x\n", addr);
|
2002 |
cpu_register_physical_memory(addr + 0, 0x400, s->mmio_io_addr); |
2003 |
} |
2004 |
|
2005 |
static void lsi_pre_save(void *opaque) |
2006 |
{ |
2007 |
LSIState *s = opaque; |
2008 |
|
2009 |
assert(s->dma_buf == NULL);
|
2010 |
assert(s->current_dma_len == 0);
|
2011 |
assert(s->active_commands == 0);
|
2012 |
} |
2013 |
|
2014 |
static const VMStateDescription vmstate_lsi_scsi = { |
2015 |
.name = "lsiscsi",
|
2016 |
.version_id = 0,
|
2017 |
.minimum_version_id = 0,
|
2018 |
.minimum_version_id_old = 0,
|
2019 |
.pre_save = lsi_pre_save, |
2020 |
.fields = (VMStateField []) { |
2021 |
VMSTATE_PCI_DEVICE(dev, LSIState), |
2022 |
|
2023 |
VMSTATE_INT32(carry, LSIState), |
2024 |
VMSTATE_INT32(sense, LSIState), |
2025 |
VMSTATE_INT32(msg_action, LSIState), |
2026 |
VMSTATE_INT32(msg_len, LSIState), |
2027 |
VMSTATE_BUFFER(msg, LSIState), |
2028 |
VMSTATE_INT32(waiting, LSIState), |
2029 |
|
2030 |
VMSTATE_UINT32(dsa, LSIState), |
2031 |
VMSTATE_UINT32(temp, LSIState), |
2032 |
VMSTATE_UINT32(dnad, LSIState), |
2033 |
VMSTATE_UINT32(dbc, LSIState), |
2034 |
VMSTATE_UINT8(istat0, LSIState), |
2035 |
VMSTATE_UINT8(istat1, LSIState), |
2036 |
VMSTATE_UINT8(dcmd, LSIState), |
2037 |
VMSTATE_UINT8(dstat, LSIState), |
2038 |
VMSTATE_UINT8(dien, LSIState), |
2039 |
VMSTATE_UINT8(sist0, LSIState), |
2040 |
VMSTATE_UINT8(sist1, LSIState), |
2041 |
VMSTATE_UINT8(sien0, LSIState), |
2042 |
VMSTATE_UINT8(sien1, LSIState), |
2043 |
VMSTATE_UINT8(mbox0, LSIState), |
2044 |
VMSTATE_UINT8(mbox1, LSIState), |
2045 |
VMSTATE_UINT8(dfifo, LSIState), |
2046 |
VMSTATE_UINT8(ctest2, LSIState), |
2047 |
VMSTATE_UINT8(ctest3, LSIState), |
2048 |
VMSTATE_UINT8(ctest4, LSIState), |
2049 |
VMSTATE_UINT8(ctest5, LSIState), |
2050 |
VMSTATE_UINT8(ccntl0, LSIState), |
2051 |
VMSTATE_UINT8(ccntl1, LSIState), |
2052 |
VMSTATE_UINT32(dsp, LSIState), |
2053 |
VMSTATE_UINT32(dsps, LSIState), |
2054 |
VMSTATE_UINT8(dmode, LSIState), |
2055 |
VMSTATE_UINT8(dcntl, LSIState), |
2056 |
VMSTATE_UINT8(scntl0, LSIState), |
2057 |
VMSTATE_UINT8(scntl1, LSIState), |
2058 |
VMSTATE_UINT8(scntl2, LSIState), |
2059 |
VMSTATE_UINT8(scntl3, LSIState), |
2060 |
VMSTATE_UINT8(sstat0, LSIState), |
2061 |
VMSTATE_UINT8(sstat1, LSIState), |
2062 |
VMSTATE_UINT8(scid, LSIState), |
2063 |
VMSTATE_UINT8(sxfer, LSIState), |
2064 |
VMSTATE_UINT8(socl, LSIState), |
2065 |
VMSTATE_UINT8(sdid, LSIState), |
2066 |
VMSTATE_UINT8(ssid, LSIState), |
2067 |
VMSTATE_UINT8(sfbr, LSIState), |
2068 |
VMSTATE_UINT8(stest1, LSIState), |
2069 |
VMSTATE_UINT8(stest2, LSIState), |
2070 |
VMSTATE_UINT8(stest3, LSIState), |
2071 |
VMSTATE_UINT8(sidl, LSIState), |
2072 |
VMSTATE_UINT8(stime0, LSIState), |
2073 |
VMSTATE_UINT8(respid0, LSIState), |
2074 |
VMSTATE_UINT8(respid1, LSIState), |
2075 |
VMSTATE_UINT32(mmrs, LSIState), |
2076 |
VMSTATE_UINT32(mmws, LSIState), |
2077 |
VMSTATE_UINT32(sfs, LSIState), |
2078 |
VMSTATE_UINT32(drs, LSIState), |
2079 |
VMSTATE_UINT32(sbms, LSIState), |
2080 |
VMSTATE_UINT32(dbms, LSIState), |
2081 |
VMSTATE_UINT32(dnad64, LSIState), |
2082 |
VMSTATE_UINT32(pmjad1, LSIState), |
2083 |
VMSTATE_UINT32(pmjad2, LSIState), |
2084 |
VMSTATE_UINT32(rbc, LSIState), |
2085 |
VMSTATE_UINT32(ua, LSIState), |
2086 |
VMSTATE_UINT32(ia, LSIState), |
2087 |
VMSTATE_UINT32(sbc, LSIState), |
2088 |
VMSTATE_UINT32(csbc, LSIState), |
2089 |
VMSTATE_BUFFER_UNSAFE(scratch, LSIState, 0, 18 * sizeof(uint32_t)), |
2090 |
VMSTATE_UINT8(sbr, LSIState), |
2091 |
|
2092 |
VMSTATE_BUFFER_UNSAFE(script_ram, LSIState, 0, 2048 * sizeof(uint32_t)), |
2093 |
VMSTATE_END_OF_LIST() |
2094 |
} |
2095 |
}; |
2096 |
|
2097 |
static int lsi_scsi_uninit(PCIDevice *d) |
2098 |
{ |
2099 |
LSIState *s = DO_UPCAST(LSIState, dev, d); |
2100 |
|
2101 |
cpu_unregister_io_memory(s->mmio_io_addr); |
2102 |
cpu_unregister_io_memory(s->ram_io_addr); |
2103 |
|
2104 |
qemu_free(s->queue); |
2105 |
|
2106 |
return 0; |
2107 |
} |
2108 |
|
2109 |
static int lsi_scsi_init(PCIDevice *dev) |
2110 |
{ |
2111 |
LSIState *s = DO_UPCAST(LSIState, dev, dev); |
2112 |
uint8_t *pci_conf; |
2113 |
|
2114 |
pci_conf = s->dev.config; |
2115 |
|
2116 |
/* PCI Vendor ID (word) */
|
2117 |
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_LSI_LOGIC); |
2118 |
/* PCI device ID (word) */
|
2119 |
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_LSI_53C895A); |
2120 |
/* PCI base class code */
|
2121 |
pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_SCSI); |
2122 |
/* PCI subsystem ID */
|
2123 |
pci_conf[0x2e] = 0x00; |
2124 |
pci_conf[0x2f] = 0x10; |
2125 |
/* PCI latency timer = 255 */
|
2126 |
pci_conf[0x0d] = 0xff; |
2127 |
/* Interrupt pin 1 */
|
2128 |
pci_conf[0x3d] = 0x01; |
2129 |
|
2130 |
s->mmio_io_addr = cpu_register_io_memory(lsi_mmio_readfn, |
2131 |
lsi_mmio_writefn, s); |
2132 |
s->ram_io_addr = cpu_register_io_memory(lsi_ram_readfn, |
2133 |
lsi_ram_writefn, s); |
2134 |
|
2135 |
pci_register_bar((struct PCIDevice *)s, 0, 256, |
2136 |
PCI_BASE_ADDRESS_SPACE_IO, lsi_io_mapfunc); |
2137 |
pci_register_bar((struct PCIDevice *)s, 1, 0x400, |
2138 |
PCI_BASE_ADDRESS_SPACE_MEMORY, lsi_mmio_mapfunc); |
2139 |
pci_register_bar((struct PCIDevice *)s, 2, 0x2000, |
2140 |
PCI_BASE_ADDRESS_SPACE_MEMORY, lsi_ram_mapfunc); |
2141 |
s->queue = qemu_malloc(sizeof(lsi_queue));
|
2142 |
s->queue_len = 1;
|
2143 |
s->active_commands = 0;
|
2144 |
|
2145 |
lsi_soft_reset(s); |
2146 |
|
2147 |
scsi_bus_new(&s->bus, &dev->qdev, 1, LSI_MAX_DEVS, lsi_command_complete);
|
2148 |
if (!dev->qdev.hotplugged) {
|
2149 |
scsi_bus_legacy_handle_cmdline(&s->bus); |
2150 |
} |
2151 |
return 0; |
2152 |
} |
2153 |
|
2154 |
static PCIDeviceInfo lsi_info = {
|
2155 |
.qdev.name = "lsi53c895a",
|
2156 |
.qdev.alias = "lsi",
|
2157 |
.qdev.size = sizeof(LSIState),
|
2158 |
.qdev.vmsd = &vmstate_lsi_scsi, |
2159 |
.init = lsi_scsi_init, |
2160 |
.exit = lsi_scsi_uninit, |
2161 |
}; |
2162 |
|
2163 |
static void lsi53c895a_register_devices(void) |
2164 |
{ |
2165 |
pci_qdev_register(&lsi_info); |
2166 |
} |
2167 |
|
2168 |
device_init(lsi53c895a_register_devices); |