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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 "vl.h"
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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, args...) \
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do { printf("lsi_scsi: " fmt , ##args); } while (0)
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#define BADF(fmt, args...) \
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do { fprintf(stderr, "lsi_scsi: " fmt , ##args); exit(1);} while (0)
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#else
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#define DPRINTF(fmt, args...) do {} while(0)
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#define BADF(fmt, args...) \
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do { fprintf(stderr, "lsi_scsi: " fmt , ##args); } while (0)
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#endif
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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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#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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#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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#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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#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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#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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#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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#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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#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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#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 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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/* The HBA is ID 7, so for simplicitly limit to 7 devices. */
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#define LSI_MAX_DEVS 7
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typedef struct {
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PCIDevice pci_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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uint32_t data_len;
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int carry; /* ??? Should this be an a visible register somewhere? */
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int sense;
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uint8_t msg;
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/* Nonzero if a Wait Reselect instruction has been issued. */
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int waiting;
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SCSIDevice *scsi_dev[LSI_MAX_DEVS];
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SCSIDevice *current_dev;
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int current_lun;
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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 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 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 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 dmbs;
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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[13]; /* SCRATCHA-SCRATCHR */
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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 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->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->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->dmbs = 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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}
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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 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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/* 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];
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}
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cpu_physical_memory_read(addr, (uint8_t *)&buf, 4);
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return cpu_to_le32(buf);
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}
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static void lsi_stop_script(LSIState *s)
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{
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s->istat1 &= ~LSI_ISTAT1_SRUN;
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}
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static void lsi_update_irq(LSIState *s)
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{
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int level;
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static int last_level;
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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;
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} else {
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s->istat0 &= ~LSI_ISTAT0_DIP;
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}
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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;
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} else {
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s->istat0 &= ~LSI_ISTAT0_SIP;
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}
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if (s->istat0 & LSI_ISTAT0_INTF)
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level = 1;
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if (level != last_level) {
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DPRINTF("Update IRQ level %d dstat %02x sist %02x%02x\n",
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level, s->dstat, s->sist1, s->sist0);
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last_level = level;
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}
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pci_set_irq(&s->pci_dev, 0, level);
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}
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/* Stop SCRIPTS execution and raise a SCSI interrupt. */
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static void lsi_script_scsi_interrupt(LSIState *s, int stat0, int stat1)
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{
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uint32_t mask0;
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uint32_t mask1;
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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);
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s->sist0 |= stat0;
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s->sist1 |= stat1;
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/* 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);
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mask1 = s->sien1 | ~(LSI_SIST1_GEN | LSI_SIST1_HTH);
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mask1 &= ~LSI_SIST1_STO;
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if (s->sist0 & mask0 || s->sist1 & mask1) {
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lsi_stop_script(s);
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}
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lsi_update_irq(s);
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}
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/* Stop SCRIPTS execution and raise a DMA interrupt. */
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static void lsi_script_dma_interrupt(LSIState *s, int stat)
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{
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DPRINTF("DMA Interrupt 0x%x prev 0x%x\n", stat, s->dstat);
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s->dstat |= stat;
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lsi_update_irq(s);
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lsi_stop_script(s);
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}
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static inline void lsi_set_phase(LSIState *s, int phase)
|
|
383 |
{
|
|
384 |
s->sstat1 = (s->sstat1 & ~PHASE_MASK) | phase;
|
|
385 |
}
|
|
386 |
|
|
387 |
static void lsi_bad_phase(LSIState *s, int out, int new_phase)
|
|
388 |
{
|
|
389 |
/* Trigger a phase mismatch. */
|
|
390 |
if (s->ccntl0 & LSI_CCNTL0_ENPMJ) {
|
|
391 |
if ((s->ccntl0 & LSI_CCNTL0_PMJCTL) || out) {
|
|
392 |
s->dsp = s->pmjad1;
|
|
393 |
} else {
|
|
394 |
s->dsp = s->pmjad2;
|
|
395 |
}
|
|
396 |
DPRINTF("Data phase mismatch jump to %08x\n", s->dsp);
|
|
397 |
} else {
|
|
398 |
DPRINTF("Phase mismatch interrupt\n");
|
|
399 |
lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0);
|
|
400 |
lsi_stop_script(s);
|
|
401 |
}
|
|
402 |
lsi_set_phase(s, new_phase);
|
|
403 |
}
|
|
404 |
|
|
405 |
static void lsi_do_dma(LSIState *s, int out)
|
|
406 |
{
|
|
407 |
uint8_t buf[TARGET_PAGE_SIZE];
|
|
408 |
uint32_t addr;
|
|
409 |
uint32_t count;
|
|
410 |
int n;
|
|
411 |
|
|
412 |
count = s->dbc;
|
|
413 |
addr = s->dnad;
|
|
414 |
DPRINTF("DMA %s addr=0x%08x len=%d avail=%d\n", out ? "out" : "in",
|
|
415 |
addr, count, s->data_len);
|
|
416 |
/* ??? Too long transfers are truncated. Don't know if this is the
|
|
417 |
correct behavior. */
|
|
418 |
if (count > s->data_len) {
|
|
419 |
/* If the DMA length is greater then the device data length then
|
|
420 |
a phase mismatch will occur. */
|
|
421 |
count = s->data_len;
|
|
422 |
s->dbc = count;
|
|
423 |
lsi_bad_phase(s, out, PHASE_ST);
|
|
424 |
}
|
|
425 |
|
|
426 |
s->csbc += count;
|
|
427 |
|
|
428 |
/* ??? Set SFBR to first data byte. */
|
|
429 |
while (count) {
|
|
430 |
n = (count > TARGET_PAGE_SIZE) ? TARGET_PAGE_SIZE : count;
|
|
431 |
if (out) {
|
|
432 |
cpu_physical_memory_read(addr, buf, n);
|
|
433 |
scsi_write_data(s->current_dev, buf, n);
|
|
434 |
} else {
|
|
435 |
scsi_read_data(s->current_dev, buf, n);
|
|
436 |
cpu_physical_memory_write(addr, buf, n);
|
|
437 |
}
|
|
438 |
addr += n;
|
|
439 |
count -= n;
|
|
440 |
}
|
|
441 |
}
|
|
442 |
|
|
443 |
|
|
444 |
static void lsi_do_command(LSIState *s)
|
|
445 |
{
|
|
446 |
uint8_t buf[16];
|
|
447 |
int n;
|
|
448 |
|
|
449 |
DPRINTF("Send command len=%d\n", s->dbc);
|
|
450 |
if (s->dbc > 16)
|
|
451 |
s->dbc = 16;
|
|
452 |
cpu_physical_memory_read(s->dnad, buf, s->dbc);
|
|
453 |
s->sfbr = buf[0];
|
|
454 |
n = scsi_send_command(s->current_dev, 0, buf, s->current_lun);
|
|
455 |
if (n > 0) {
|
|
456 |
s->data_len = n;
|
|
457 |
lsi_set_phase(s, PHASE_DI);
|
|
458 |
} else if (n < 0) {
|
|
459 |
s->data_len = -n;
|
|
460 |
lsi_set_phase(s, PHASE_DO);
|
|
461 |
}
|
|
462 |
}
|
|
463 |
|
|
464 |
static void lsi_command_complete(void *opaque, uint32_t tag, int sense)
|
|
465 |
{
|
|
466 |
LSIState *s = (LSIState *)opaque;
|
|
467 |
|
|
468 |
DPRINTF("Command complete sense=%d\n", sense);
|
|
469 |
s->sense = sense;
|
|
470 |
lsi_set_phase(s, PHASE_ST);
|
|
471 |
}
|
|
472 |
|
|
473 |
static void lsi_do_status(LSIState *s)
|
|
474 |
{
|
|
475 |
DPRINTF("Get status len=%d sense=%d\n", s->dbc, s->sense);
|
|
476 |
if (s->dbc != 1)
|
|
477 |
BADF("Bad Status move\n");
|
|
478 |
s->dbc = 1;
|
|
479 |
s->msg = s->sense;
|
|
480 |
cpu_physical_memory_write(s->dnad, &s->msg, 1);
|
|
481 |
s->sfbr = s->msg;
|
|
482 |
lsi_set_phase(s, PHASE_MI);
|
|
483 |
s->msg = 0; /* COMMAND COMPLETE */
|
|
484 |
}
|
|
485 |
|
|
486 |
static void lsi_disconnect(LSIState *s)
|
|
487 |
{
|
|
488 |
s->scntl1 &= ~LSI_SCNTL1_CON;
|
|
489 |
s->sstat1 &= ~PHASE_MASK;
|
|
490 |
}
|
|
491 |
|
|
492 |
static void lsi_do_msgin(LSIState *s)
|
|
493 |
{
|
|
494 |
DPRINTF("Message in len=%d\n", s->dbc);
|
|
495 |
s->dbc = 1;
|
|
496 |
s->sfbr = s->msg;
|
|
497 |
cpu_physical_memory_write(s->dnad, &s->msg, 1);
|
|
498 |
if (s->msg == 0) {
|
|
499 |
lsi_disconnect(s);
|
|
500 |
} else {
|
|
501 |
/* ??? Check if ATN (not yet implemented) is asserted and maybe
|
|
502 |
switch to PHASE_MO. */
|
|
503 |
lsi_set_phase(s, PHASE_CMD);
|
|
504 |
}
|
|
505 |
}
|
|
506 |
|
|
507 |
static void lsi_do_msgout(LSIState *s)
|
|
508 |
{
|
|
509 |
uint8_t msg;
|
|
510 |
|
|
511 |
DPRINTF("MSG out len=%d\n", s->dbc);
|
|
512 |
if (s->dbc != 1) {
|
|
513 |
/* Multibyte messages not implemented. */
|
|
514 |
s->msg = 7; /* MESSAGE REJECT */
|
|
515 |
//s->dbc = 1;
|
|
516 |
//lsi_bad_phase(s, 1, PHASE_MI);
|
|
517 |
lsi_set_phase(s, PHASE_MI);
|
|
518 |
return;
|
|
519 |
}
|
|
520 |
cpu_physical_memory_read(s->dnad, &msg, 1);
|
|
521 |
s->sfbr = msg;
|
|
522 |
s->dnad++;
|
|
523 |
|
|
524 |
switch (msg) {
|
|
525 |
case 0x00:
|
|
526 |
DPRINTF("Got Disconnect\n");
|
|
527 |
lsi_disconnect(s);
|
|
528 |
return;
|
|
529 |
case 0x08:
|
|
530 |
DPRINTF("Got No Operation\n");
|
|
531 |
lsi_set_phase(s, PHASE_CMD);
|
|
532 |
return;
|
|
533 |
}
|
|
534 |
if ((msg & 0x80) == 0) {
|
|
535 |
DPRINTF("Unimplemented message 0x%d\n", msg);
|
|
536 |
s->msg = 7; /* MESSAGE REJECT */
|
|
537 |
lsi_bad_phase(s, 1, PHASE_MI);
|
|
538 |
return;
|
|
539 |
}
|
|
540 |
s->current_lun = msg & 7;
|
|
541 |
DPRINTF("Select LUN %d\n", s->current_lun);
|
|
542 |
lsi_set_phase(s, PHASE_CMD);
|
|
543 |
}
|
|
544 |
|
|
545 |
/* Sign extend a 24-bit value. */
|
|
546 |
static inline int32_t sxt24(int32_t n)
|
|
547 |
{
|
|
548 |
return (n << 8) >> 8;
|
|
549 |
}
|
|
550 |
|
|
551 |
static void lsi_memcpy(LSIState *s, uint32_t dest, uint32_t src, int count)
|
|
552 |
{
|
|
553 |
int n;
|
|
554 |
uint8_t buf[TARGET_PAGE_SIZE];
|
|
555 |
|
|
556 |
DPRINTF("memcpy dest 0x%08x src 0x%08x count %d\n", dest, src, count);
|
|
557 |
while (count) {
|
|
558 |
n = (count > TARGET_PAGE_SIZE) ? TARGET_PAGE_SIZE : count;
|
|
559 |
cpu_physical_memory_read(src, buf, n);
|
|
560 |
cpu_physical_memory_write(dest, buf, n);
|
|
561 |
src += n;
|
|
562 |
dest += n;
|
|
563 |
count -= n;
|
|
564 |
}
|
|
565 |
}
|
|
566 |
|
|
567 |
static void lsi_execute_script(LSIState *s)
|
|
568 |
{
|
|
569 |
uint32_t insn;
|
|
570 |
uint32_t addr;
|
|
571 |
int opcode;
|
|
572 |
|
|
573 |
s->istat1 |= LSI_ISTAT1_SRUN;
|
|
574 |
again:
|
|
575 |
insn = read_dword(s, s->dsp);
|
|
576 |
addr = read_dword(s, s->dsp + 4);
|
|
577 |
DPRINTF("SCRIPTS dsp=%08x opcode %08x arg %08x\n", s->dsp, insn, addr);
|
|
578 |
s->dsps = addr;
|
|
579 |
s->dcmd = insn >> 24;
|
|
580 |
s->dsp += 8;
|
|
581 |
switch (insn >> 30) {
|
|
582 |
case 0: /* Block move. */
|
|
583 |
if (s->sist1 & LSI_SIST1_STO) {
|
|
584 |
DPRINTF("Delayed select timeout\n");
|
|
585 |
lsi_stop_script(s);
|
|
586 |
break;
|
|
587 |
}
|
|
588 |
s->dbc = insn & 0xffffff;
|
|
589 |
s->rbc = s->dbc;
|
|
590 |
if (insn & (1 << 29)) {
|
|
591 |
/* Indirect addressing. */
|
|
592 |
addr = read_dword(s, addr);
|
|
593 |
} else if (insn & (1 << 28)) {
|
|
594 |
uint32_t buf[2];
|
|
595 |
int32_t offset;
|
|
596 |
/* Table indirect addressing. */
|
|
597 |
offset = sxt24(addr);
|
|
598 |
cpu_physical_memory_read(s->dsa + offset, (uint8_t *)buf, 8);
|
|
599 |
s->dbc = cpu_to_le32(buf[0]);
|
|
600 |
addr = cpu_to_le32(buf[1]);
|
|
601 |
}
|
|
602 |
if ((s->sstat1 & PHASE_MASK) != ((insn >> 24) & 7)) {
|
|
603 |
DPRINTF("Wrong phase got %d expected %d\n",
|
|
604 |
s->sstat1 & PHASE_MASK, (insn >> 24) & 7);
|
|
605 |
lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0);
|
|
606 |
break;
|
|
607 |
}
|
|
608 |
s->dnad = addr;
|
|
609 |
switch (s->sstat1 & 0x7) {
|
|
610 |
case PHASE_DO:
|
|
611 |
lsi_do_dma(s, 1);
|
|
612 |
break;
|
|
613 |
case PHASE_DI:
|
|
614 |
lsi_do_dma(s, 0);
|
|
615 |
break;
|
|
616 |
case PHASE_CMD:
|
|
617 |
lsi_do_command(s);
|
|
618 |
break;
|
|
619 |
case PHASE_ST:
|
|
620 |
lsi_do_status(s);
|
|
621 |
break;
|
|
622 |
case PHASE_MO:
|
|
623 |
lsi_do_msgout(s);
|
|
624 |
break;
|
|
625 |
case PHASE_MI:
|
|
626 |
lsi_do_msgin(s);
|
|
627 |
break;
|
|
628 |
default:
|
|
629 |
BADF("Unimplemented phase %d\n", s->sstat1 & PHASE_MASK);
|
|
630 |
exit(1);
|
|
631 |
}
|
|
632 |
s->dfifo = s->dbc & 0xff;
|
|
633 |
s->ctest5 = (s->ctest5 & 0xfc) | ((s->dbc >> 8) & 3);
|
|
634 |
s->sbc = s->dbc;
|
|
635 |
s->rbc -= s->dbc;
|
|
636 |
s->ua = addr + s->dbc;
|
|
637 |
/* ??? Set ESA. */
|
|
638 |
s->ia = s->dsp - 8;
|
|
639 |
break;
|
|
640 |
|
|
641 |
case 1: /* IO or Read/Write instruction. */
|
|
642 |
opcode = (insn >> 27) & 7;
|
|
643 |
if (opcode < 5) {
|
|
644 |
uint32_t id;
|
|
645 |
|
|
646 |
if (insn & (1 << 25)) {
|
|
647 |
id = read_dword(s, s->dsa + sxt24(insn));
|
|
648 |
} else {
|
|
649 |
id = addr;
|
|
650 |
}
|
|
651 |
id = (id >> 16) & 0xf;
|
|
652 |
if (insn & (1 << 26)) {
|
|
653 |
addr = s->dsp + sxt24(addr);
|
|
654 |
}
|
|
655 |
s->dnad = addr;
|
|
656 |
switch (opcode) {
|
|
657 |
case 0: /* Select */
|
|
658 |
s->sstat0 |= LSI_SSTAT0_WOA;
|
|
659 |
s->scntl1 &= ~LSI_SCNTL1_IARB;
|
|
660 |
s->sdid = id;
|
|
661 |
if (id >= LSI_MAX_DEVS || !s->scsi_dev[id]) {
|
|
662 |
DPRINTF("Selected absent target %d\n", id);
|
|
663 |
lsi_script_scsi_interrupt(s, 0, LSI_SIST1_STO);
|
|
664 |
lsi_disconnect(s);
|
|
665 |
break;
|
|
666 |
}
|
|
667 |
DPRINTF("Selected target %d%s\n",
|
|
668 |
id, insn & (1 << 3) ? " ATN" : "");
|
|
669 |
/* ??? Linux drivers compain when this is set. Maybe
|
|
670 |
it only applies in low-level mode (unimplemented).
|
|
671 |
lsi_script_scsi_interrupt(s, LSI_SIST0_CMP, 0); */
|
|
672 |
s->current_dev = s->scsi_dev[id];
|
|
673 |
s->scntl1 |= LSI_SCNTL1_CON;
|
|
674 |
if (insn & (1 << 3)) {
|
|
675 |
s->socl |= LSI_SOCL_ATN;
|
|
676 |
}
|
|
677 |
lsi_set_phase(s, PHASE_MO);
|
|
678 |
break;
|
|
679 |
case 1: /* Disconnect */
|
|
680 |
DPRINTF("Wait Disconect\n");
|
|
681 |
s->scntl1 &= ~LSI_SCNTL1_CON;
|
|
682 |
break;
|
|
683 |
case 2: /* Wait Reselect */
|
|
684 |
DPRINTF("Wait Reselect\n");
|
|
685 |
s->waiting = 1;
|
|
686 |
break;
|
|
687 |
case 3: /* Set */
|
|
688 |
DPRINTF("Set%s%s%s%s\n",
|
|
689 |
insn & (1 << 3) ? " ATN" : "",
|
|
690 |
insn & (1 << 6) ? " ACK" : "",
|
|
691 |
insn & (1 << 9) ? " TM" : "",
|
|
692 |
insn & (1 << 10) ? " CC" : "");
|
|
693 |
if (insn & (1 << 3)) {
|
|
694 |
s->socl |= LSI_SOCL_ATN;
|
|
695 |
lsi_set_phase(s, PHASE_MO);
|
|
696 |
}
|
|
697 |
if (insn & (1 << 9)) {
|
|
698 |
BADF("Target mode not implemented\n");
|
|
699 |
exit(1);
|
|
700 |
}
|
|
701 |
if (insn & (1 << 10))
|
|
702 |
s->carry = 1;
|
|
703 |
break;
|
|
704 |
case 4: /* Clear */
|
|
705 |
DPRINTF("Clear%s%s%s%s\n",
|
|
706 |
insn & (1 << 3) ? " ATN" : "",
|
|
707 |
insn & (1 << 6) ? " ACK" : "",
|
|
708 |
insn & (1 << 9) ? " TM" : "",
|
|
709 |
insn & (1 << 10) ? " CC" : "");
|
|
710 |
if (insn & (1 << 3)) {
|
|
711 |
s->socl &= ~LSI_SOCL_ATN;
|
|
712 |
}
|
|
713 |
if (insn & (1 << 10))
|
|
714 |
s->carry = 0;
|
|
715 |
break;
|
|
716 |
}
|
|
717 |
} else {
|
|
718 |
uint8_t op0;
|
|
719 |
uint8_t op1;
|
|
720 |
uint8_t data8;
|
|
721 |
int reg;
|
|
722 |
int operator;
|
|
723 |
#ifdef DEBUG_LSI
|
|
724 |
static const char *opcode_names[3] =
|
|
725 |
{"Write", "Read", "Read-Modify-Write"};
|
|
726 |
static const char *operator_names[8] =
|
|
727 |
{"MOV", "SHL", "OR", "XOR", "AND", "SHR", "ADD", "ADC"};
|
|
728 |
#endif
|
|
729 |
|
|
730 |
reg = ((insn >> 16) & 0x7f) | (insn & 0x80);
|
|
731 |
data8 = (insn >> 8) & 0xff;
|
|
732 |
opcode = (insn >> 27) & 7;
|
|
733 |
operator = (insn >> 24) & 7;
|
|
734 |
DPRINTF("%s reg 0x%x %s data8 %d%s\n",
|
|
735 |
opcode_names[opcode - 5], reg,
|
|
736 |
operator_names[operator], data8,
|
|
737 |
(insn & (1 << 23)) ? " SFBR" : "");
|
|
738 |
op0 = op1 = 0;
|
|
739 |
switch (opcode) {
|
|
740 |
case 5: /* From SFBR */
|
|
741 |
op0 = s->sfbr;
|
|
742 |
op1 = data8;
|
|
743 |
break;
|
|
744 |
case 6: /* To SFBR */
|
|
745 |
if (operator)
|
|
746 |
op0 = lsi_reg_readb(s, reg);
|
|
747 |
op1 = data8;
|
|
748 |
break;
|
|
749 |
case 7: /* Read-modify-write */
|
|
750 |
if (operator)
|
|
751 |
op0 = lsi_reg_readb(s, reg);
|
|
752 |
if (insn & (1 << 23)) {
|
|
753 |
op1 = s->sfbr;
|
|
754 |
} else {
|
|
755 |
op1 = data8;
|
|
756 |
}
|
|
757 |
break;
|
|
758 |
}
|
|
759 |
|
|
760 |
switch (operator) {
|
|
761 |
case 0: /* move */
|
|
762 |
op0 = op1;
|
|
763 |
break;
|
|
764 |
case 1: /* Shift left */
|
|
765 |
op1 = op0 >> 7;
|
|
766 |
op0 = (op0 << 1) | s->carry;
|
|
767 |
s->carry = op1;
|
|
768 |
break;
|
|
769 |
case 2: /* OR */
|
|
770 |
op0 |= op1;
|
|
771 |
break;
|
|
772 |
case 3: /* XOR */
|
|
773 |
op0 |= op1;
|
|
774 |
break;
|
|
775 |
case 4: /* AND */
|
|
776 |
op0 &= op1;
|
|
777 |
break;
|
|
778 |
case 5: /* SHR */
|
|
779 |
op1 = op0 & 1;
|
|
780 |
op0 = (op0 >> 1) | (s->carry << 7);
|
|
781 |
break;
|
|
782 |
case 6: /* ADD */
|
|
783 |
op0 += op1;
|
|
784 |
s->carry = op0 < op1;
|
|
785 |
break;
|
|
786 |
case 7: /* ADC */
|
|
787 |
op0 += op1 + s->carry;
|
|
788 |
if (s->carry)
|
|
789 |
s->carry = op0 <= op1;
|
|
790 |
else
|
|
791 |
s->carry = op0 < op1;
|
|
792 |
break;
|
|
793 |
}
|
|
794 |
|
|
795 |
switch (opcode) {
|
|
796 |
case 5: /* From SFBR */
|
|
797 |
case 7: /* Read-modify-write */
|
|
798 |
lsi_reg_writeb(s, reg, op0);
|
|
799 |
break;
|
|
800 |
case 6: /* To SFBR */
|
|
801 |
s->sfbr = op0;
|
|
802 |
break;
|
|
803 |
}
|
|
804 |
}
|
|
805 |
break;
|
|
806 |
|
|
807 |
case 2: /* Transfer Control. */
|
|
808 |
{
|
|
809 |
int cond;
|
|
810 |
int jmp;
|
|
811 |
|
|
812 |
if ((insn & 0x002e0000) == 0) {
|
|
813 |
DPRINTF("NOP\n");
|
|
814 |
break;
|
|
815 |
}
|
|
816 |
if (s->sist1 & LSI_SIST1_STO) {
|
|
817 |
DPRINTF("Delayed select timeout\n");
|
|
818 |
lsi_stop_script(s);
|
|
819 |
break;
|
|
820 |
}
|
|
821 |
cond = jmp = (insn & (1 << 19)) != 0;
|
|
822 |
if (cond == jmp && (insn & (1 << 21))) {
|
|
823 |
DPRINTF("Compare carry %d\n", s->carry == jmp);
|
|
824 |
cond = s->carry != 0;
|
|
825 |
}
|
|
826 |
if (cond == jmp && (insn & (1 << 17))) {
|
|
827 |
DPRINTF("Compare phase %d %c= %d\n",
|
|
828 |
(s->sstat1 & PHASE_MASK),
|
|
829 |
jmp ? '=' : '!',
|
|
830 |
((insn >> 24) & 7));
|
|
831 |
cond = (s->sstat1 & PHASE_MASK) == ((insn >> 24) & 7);
|
|
832 |
}
|
|
833 |
if (cond == jmp && (insn & (1 << 18))) {
|
|
834 |
uint8_t mask;
|
|
835 |
|
|
836 |
mask = (~insn >> 8) & 0xff;
|
|
837 |
DPRINTF("Compare data 0x%x & 0x%x %c= 0x%x\n",
|
|
838 |
s->sfbr, mask, jmp ? '=' : '!', insn & mask);
|
|
839 |
cond = (s->sfbr & mask) == (insn & mask);
|
|
840 |
}
|
|
841 |
if (cond == jmp) {
|
|
842 |
if (insn & (1 << 23)) {
|
|
843 |
/* Relative address. */
|
|
844 |
addr = s->dsp + sxt24(addr);
|
|
845 |
}
|
|
846 |
switch ((insn >> 27) & 7) {
|
|
847 |
case 0: /* Jump */
|
|
848 |
DPRINTF("Jump to 0x%08x\n", addr);
|
|
849 |
s->dsp = addr;
|
|
850 |
break;
|
|
851 |
case 1: /* Call */
|
|
852 |
DPRINTF("Call 0x%08x\n", addr);
|
|
853 |
s->temp = s->dsp;
|
|
854 |
s->dsp = addr;
|
|
855 |
break;
|
|
856 |
case 2: /* Return */
|
|
857 |
DPRINTF("Return to 0x%08x\n", s->temp);
|
|
858 |
s->dsp = s->temp;
|
|
859 |
break;
|
|
860 |
case 3: /* Interrupt */
|
|
861 |
DPRINTF("Interrupt 0x%08x\n", s->dsps);
|
|
862 |
if ((insn & (1 << 20)) != 0) {
|
|
863 |
s->istat0 |= LSI_ISTAT0_INTF;
|
|
864 |
lsi_update_irq(s);
|
|
865 |
} else {
|
|
866 |
lsi_script_dma_interrupt(s, LSI_DSTAT_SIR);
|
|
867 |
}
|
|
868 |
break;
|
|
869 |
default:
|
|
870 |
DPRINTF("Illegal transfer control\n");
|
|
871 |
lsi_script_dma_interrupt(s, LSI_DSTAT_IID);
|
|
872 |
break;
|
|
873 |
}
|
|
874 |
} else {
|
|
875 |
DPRINTF("Control condition failed\n");
|
|
876 |
}
|
|
877 |
}
|
|
878 |
break;
|
|
879 |
|
|
880 |
case 3:
|
|
881 |
if ((insn & (1 << 29)) == 0) {
|
|
882 |
/* Memory move. */
|
|
883 |
uint32_t dest;
|
|
884 |
/* ??? The docs imply the destination address is loaded into
|
|
885 |
the TEMP register. However the Linux drivers rely on
|
|
886 |
the value being presrved. */
|
|
887 |
dest = read_dword(s, s->dsp);
|
|
888 |
s->dsp += 4;
|
|
889 |
lsi_memcpy(s, dest, addr, insn & 0xffffff);
|
|
890 |
} else {
|
|
891 |
uint8_t data[7];
|
|
892 |
int reg;
|
|
893 |
int n;
|
|
894 |
int i;
|
|
895 |
|
|
896 |
if (insn & (1 << 28)) {
|
|
897 |
addr = s->dsa + sxt24(addr);
|
|
898 |
}
|
|
899 |
n = (insn & 7);
|
|
900 |
reg = (insn >> 16) & 0xff;
|
|
901 |
if (insn & (1 << 24)) {
|
|
902 |
DPRINTF("Load reg 0x%x size %d addr 0x%08x\n", reg, n, addr);
|
|
903 |
cpu_physical_memory_read(addr, data, n);
|
|
904 |
for (i = 0; i < n; i++) {
|
|
905 |
lsi_reg_writeb(s, reg + i, data[i]);
|
|
906 |
}
|
|
907 |
} else {
|
|
908 |
DPRINTF("Store reg 0x%x size %d addr 0x%08x\n", reg, n, addr);
|
|
909 |
for (i = 0; i < n; i++) {
|
|
910 |
data[i] = lsi_reg_readb(s, reg + i);
|
|
911 |
}
|
|
912 |
cpu_physical_memory_write(addr, data, n);
|
|
913 |
}
|
|
914 |
}
|
|
915 |
}
|
|
916 |
/* ??? Need to avoid infinite loops. */
|
|
917 |
if (s->istat1 & LSI_ISTAT1_SRUN && !s->waiting) {
|
|
918 |
if (s->dcntl & LSI_DCNTL_SSM) {
|
|
919 |
lsi_script_dma_interrupt(s, LSI_DSTAT_SSI);
|
|
920 |
} else {
|
|
921 |
goto again;
|
|
922 |
}
|
|
923 |
}
|
|
924 |
DPRINTF("SCRIPTS execution stopped\n");
|
|
925 |
}
|
|
926 |
|
|
927 |
static uint8_t lsi_reg_readb(LSIState *s, int offset)
|
|
928 |
{
|
|
929 |
uint8_t tmp;
|
|
930 |
#define CASE_GET_REG32(name, addr) \
|
|
931 |
case addr: return s->name & 0xff; \
|
|
932 |
case addr + 1: return (s->name >> 8) & 0xff; \
|
|
933 |
case addr + 2: return (s->name >> 16) & 0xff; \
|
|
934 |
case addr + 3: return (s->name >> 24) & 0xff;
|
|
935 |
|
|
936 |
#ifdef DEBUG_LSI_REG
|
|
937 |
DPRINTF("Read reg %x\n", offset);
|
|
938 |
#endif
|
|
939 |
switch (offset) {
|
|
940 |
case 0x00: /* SCNTL0 */
|
|
941 |
return s->scntl0;
|
|
942 |
case 0x01: /* SCNTL1 */
|
|
943 |
return s->scntl1;
|
|
944 |
case 0x02: /* SCNTL2 */
|
|
945 |
return s->scntl2;
|
|
946 |
case 0x03: /* SCNTL3 */
|
|
947 |
return s->scntl3;
|
|
948 |
case 0x04: /* SCID */
|
|
949 |
return s->scid;
|
|
950 |
case 0x05: /* SXFER */
|
|
951 |
return s->sxfer;
|
|
952 |
case 0x06: /* SDID */
|
|
953 |
return s->sdid;
|
|
954 |
case 0x07: /* GPREG0 */
|
|
955 |
return 0x7f;
|
|
956 |
case 0xb: /* SBCL */
|
|
957 |
/* ??? This is not correct. However it's (hopefully) only
|
|
958 |
used for diagnostics, so should be ok. */
|
|
959 |
return 0;
|
|
960 |
case 0xc: /* DSTAT */
|
|
961 |
tmp = s->dstat | 0x80;
|
|
962 |
if ((s->istat0 & LSI_ISTAT0_INTF) == 0)
|
|
963 |
s->dstat = 0;
|
|
964 |
lsi_update_irq(s);
|
|
965 |
return tmp;
|
|
966 |
case 0x0d: /* SSTAT0 */
|
|
967 |
return s->sstat0;
|
|
968 |
case 0x0e: /* SSTAT1 */
|
|
969 |
return s->sstat1;
|
|
970 |
case 0x0f: /* SSTAT2 */
|
|
971 |
return s->scntl1 & LSI_SCNTL1_CON ? 0 : 2;
|
|
972 |
CASE_GET_REG32(dsa, 0x10)
|
|
973 |
case 0x14: /* ISTAT0 */
|
|
974 |
return s->istat0;
|
|
975 |
case 0x16: /* MBOX0 */
|
|
976 |
return s->mbox0;
|
|
977 |
case 0x17: /* MBOX1 */
|
|
978 |
return s->mbox1;
|
|
979 |
case 0x18: /* CTEST0 */
|
|
980 |
return 0xff;
|
|
981 |
case 0x19: /* CTEST1 */
|
|
982 |
return 0;
|
|
983 |
case 0x1a: /* CTEST2 */
|
|
984 |
tmp = LSI_CTEST2_DACK | LSI_CTEST2_CM;
|
|
985 |
if (s->istat0 & LSI_ISTAT0_SIGP) {
|
|
986 |
s->istat0 &= ~LSI_ISTAT0_SIGP;
|
|
987 |
tmp |= LSI_CTEST2_SIGP;
|
|
988 |
}
|
|
989 |
return tmp;
|
|
990 |
case 0x1b: /* CTEST3 */
|
|
991 |
return s->ctest3;
|
|
992 |
CASE_GET_REG32(temp, 0x1c)
|
|
993 |
case 0x20: /* DFIFO */
|
|
994 |
return 0;
|
|
995 |
case 0x21: /* CTEST4 */
|
|
996 |
return s->ctest4;
|
|
997 |
case 0x22: /* CTEST5 */
|
|
998 |
return s->ctest5;
|
|
999 |
case 0x24: /* DBC[0:7] */
|
|
1000 |
return s->dbc & 0xff;
|
|
1001 |
case 0x25: /* DBC[8:15] */
|
|
1002 |
return (s->dbc >> 8) & 0xff;
|
|
1003 |
case 0x26: /* DBC[16->23] */
|
|
1004 |
return (s->dbc >> 16) & 0xff;
|
|
1005 |
case 0x27: /* DCMD */
|
|
1006 |
return s->dcmd;
|
|
1007 |
CASE_GET_REG32(dsp, 0x2c)
|
|
1008 |
CASE_GET_REG32(dsps, 0x30)
|
|
1009 |
CASE_GET_REG32(scratch[0], 0x34)
|
|
1010 |
case 0x38: /* DMODE */
|
|
1011 |
return s->dmode;
|
|
1012 |
case 0x39: /* DIEN */
|
|
1013 |
return s->dien;
|
|
1014 |
case 0x3b: /* DCNTL */
|
|
1015 |
return s->dcntl;
|
|
1016 |
case 0x40: /* SIEN0 */
|
|
1017 |
return s->sien0;
|
|
1018 |
case 0x41: /* SIEN1 */
|
|
1019 |
return s->sien1;
|
|
1020 |
case 0x42: /* SIST0 */
|
|
1021 |
tmp = s->sist0;
|
|
1022 |
s->sist0 = 0;
|
|
1023 |
lsi_update_irq(s);
|
|
1024 |
return tmp;
|
|
1025 |
case 0x43: /* SIST1 */
|
|
1026 |
tmp = s->sist1;
|
|
1027 |
s->sist1 = 0;
|
|
1028 |
lsi_update_irq(s);
|
|
1029 |
return tmp;
|
|
1030 |
case 0x47: /* GPCNTL0 */
|
|
1031 |
return 0x0f;
|
|
1032 |
case 0x48: /* STIME0 */
|
|
1033 |
return s->stime0;
|
|
1034 |
case 0x4a: /* RESPID0 */
|
|
1035 |
return s->respid0;
|
|
1036 |
case 0x4b: /* RESPID1 */
|
|
1037 |
return s->respid1;
|
|
1038 |
case 0x4d: /* STEST1 */
|
|
1039 |
return s->stest1;
|
|
1040 |
case 0x4e: /* STEST2 */
|
|
1041 |
return s->stest2;
|
|
1042 |
case 0x4f: /* STEST3 */
|
|
1043 |
return s->stest3;
|
|
1044 |
case 0x52: /* STEST4 */
|
|
1045 |
return 0xe0;
|
|
1046 |
case 0x56: /* CCNTL0 */
|
|
1047 |
return s->ccntl0;
|
|
1048 |
case 0x57: /* CCNTL1 */
|
|
1049 |
return s->ccntl1;
|
|
1050 |
case 0x58: case 0x59: /* SBDL */
|
|
1051 |
return 0;
|
|
1052 |
CASE_GET_REG32(mmrs, 0xa0)
|
|
1053 |
CASE_GET_REG32(mmws, 0xa4)
|
|
1054 |
CASE_GET_REG32(sfs, 0xa8)
|
|
1055 |
CASE_GET_REG32(drs, 0xac)
|
|
1056 |
CASE_GET_REG32(sbms, 0xb0)
|
|
1057 |
CASE_GET_REG32(dmbs, 0xb4)
|
|
1058 |
CASE_GET_REG32(dnad64, 0xb8)
|
|
1059 |
CASE_GET_REG32(pmjad1, 0xc0)
|
|
1060 |
CASE_GET_REG32(pmjad2, 0xc4)
|
|
1061 |
CASE_GET_REG32(rbc, 0xc8)
|
|
1062 |
CASE_GET_REG32(ua, 0xcc)
|
|
1063 |
CASE_GET_REG32(ia, 0xd4)
|
|
1064 |
CASE_GET_REG32(sbc, 0xd8)
|
|
1065 |
CASE_GET_REG32(csbc, 0xdc)
|
|
1066 |
}
|
|
1067 |
if (offset >= 0x5c && offset < 0xa0) {
|
|
1068 |
int n;
|
|
1069 |
int shift;
|
|
1070 |
n = (offset - 0x58) >> 2;
|
|
1071 |
shift = (offset & 3) * 8;
|
|
1072 |
return (s->scratch[n] >> shift) & 0xff;
|
|
1073 |
}
|
|
1074 |
BADF("readb 0x%x\n", offset);
|
|
1075 |
exit(1);
|
|
1076 |
#undef CASE_GET_REG32
|
|
1077 |
}
|
|
1078 |
|
|
1079 |
static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
|
|
1080 |
{
|
|
1081 |
#define CASE_SET_REG32(name, addr) \
|
|
1082 |
case addr : s->name &= 0xffffff00; s->name |= val; break; \
|
|
1083 |
case addr + 1: s->name &= 0xffff00ff; s->name |= val << 8; break; \
|
|
1084 |
case addr + 2: s->name &= 0xff00ffff; s->name |= val << 16; break; \
|
|
1085 |
case addr + 3: s->name &= 0x00ffffff; s->name |= val << 24; break;
|
|
1086 |
|
|
1087 |
#ifdef DEBUG_LSI_REG
|
|
1088 |
DPRINTF("Write reg %x = %02x\n", offset, val);
|
|
1089 |
#endif
|
|
1090 |
switch (offset) {
|
|
1091 |
case 0x00: /* SCNTL0 */
|
|
1092 |
s->scntl0 = val;
|
|
1093 |
if (val & LSI_SCNTL0_START) {
|
|
1094 |
BADF("Start sequence not implemented\n");
|
|
1095 |
}
|
|
1096 |
break;
|
|
1097 |
case 0x01: /* SCNTL1 */
|
|
1098 |
s->scntl1 = val & ~LSI_SCNTL1_SST;
|
|
1099 |
if (val & LSI_SCNTL1_IARB) {
|
|
1100 |
BADF("Immediate Arbritration not implemented\n");
|
|
1101 |
}
|
|
1102 |
if (val & LSI_SCNTL1_RST) {
|
|
1103 |
s->sstat0 |= LSI_SSTAT0_RST;
|
|
1104 |
lsi_script_scsi_interrupt(s, LSI_SIST0_RST, 0);
|
|
1105 |
} else {
|
|
1106 |
s->sstat0 &= ~LSI_SSTAT0_RST;
|
|
1107 |
}
|
|
1108 |
break;
|
|
1109 |
case 0x02: /* SCNTL2 */
|
|
1110 |
val &= ~(LSI_SCNTL2_WSR | LSI_SCNTL2_WSS);
|
|
1111 |
s->scntl3 = val;
|
|
1112 |
break;
|
|
1113 |
case 0x03: /* SCNTL3 */
|
|
1114 |
s->scntl3 = val;
|
|
1115 |
break;
|
|
1116 |
case 0x04: /* SCID */
|
|
1117 |
s->scid = val;
|
|
1118 |
break;
|
|
1119 |
case 0x05: /* SXFER */
|
|
1120 |
s->sxfer = val;
|
|
1121 |
break;
|
|
1122 |
case 0x07: /* GPREG0 */
|
|
1123 |
break;
|
|
1124 |
case 0x0c: case 0x0d: case 0x0e: case 0x0f:
|
|
1125 |
/* Linux writes to these readonly registers on startup. */
|
|
1126 |
return;
|
|
1127 |
CASE_SET_REG32(dsa, 0x10)
|
|
1128 |
case 0x14: /* ISTAT0 */
|
|
1129 |
s->istat0 = (s->istat0 & 0x0f) | (val & 0xf0);
|
|
1130 |
if (val & LSI_ISTAT0_ABRT) {
|
|
1131 |
lsi_script_dma_interrupt(s, LSI_DSTAT_ABRT);
|
|
1132 |
}
|
|
1133 |
if (val & LSI_ISTAT0_INTF) {
|
|
1134 |
s->istat0 &= ~LSI_ISTAT0_INTF;
|
|
1135 |
lsi_update_irq(s);
|
|
1136 |
}
|
|
1137 |
if (s->waiting && val & LSI_ISTAT0_SIGP) {
|
|
1138 |
DPRINTF("Woken by SIGP\n");
|
|
1139 |
s->waiting = 0;
|
|
1140 |
s->dsp = s->dnad;
|
|
1141 |
lsi_execute_script(s);
|
|
1142 |
}
|
|
1143 |
if (val & LSI_ISTAT0_SRST) {
|
|
1144 |
lsi_soft_reset(s);
|
|
1145 |
}
|
|
1146 |
case 0x16: /* MBOX0 */
|
|
1147 |
s->mbox0 = val;
|
|
1148 |
case 0x17: /* MBOX1 */
|
|
1149 |
s->mbox1 = val;
|
|
1150 |
case 0x1b: /* CTEST3 */
|
|
1151 |
s->ctest3 = val & 0x0f;
|
|
1152 |
break;
|
|
1153 |
CASE_SET_REG32(temp, 0x1c)
|
|
1154 |
case 0x21: /* CTEST4 */
|
|
1155 |
if (val & 7) {
|
|
1156 |
BADF("Unimplemented CTEST4-FBL 0x%x\n", val);
|
|
1157 |
}
|
|
1158 |
s->ctest4 = val;
|
|
1159 |
break;
|
|
1160 |
case 0x22: /* CTEST5 */
|
|
1161 |
if (val & (LSI_CTEST5_ADCK | LSI_CTEST5_BBCK)) {
|
|
1162 |
BADF("CTEST5 DMA increment not implemented\n");
|
|
1163 |
}
|
|
1164 |
s->ctest5 = val;
|
|
1165 |
break;
|
|
1166 |
case 0x2c: /* DSPS[0:7] */
|
|
1167 |
s->dsp &= 0xffffff00;
|
|
1168 |
s->dsp |= val;
|
|
1169 |
break;
|
|
1170 |
case 0x2d: /* DSPS[8:15] */
|
|
1171 |
s->dsp &= 0xffff00ff;
|
|
1172 |
s->dsp |= val << 8;
|
|
1173 |
break;
|
|
1174 |
case 0x2e: /* DSPS[16:23] */
|
|
1175 |
s->dsp &= 0xff00ffff;
|
|
1176 |
s->dsp |= val << 16;
|
|
1177 |
break;
|
|
1178 |
case 0x2f: /* DSPS[14:31] */
|
|
1179 |
s->dsp &= 0x00ffffff;
|
|
1180 |
s->dsp |= val << 24;
|
|
1181 |
if ((s->dmode & LSI_DMODE_MAN) == 0
|
|
1182 |
&& (s->istat1 & LSI_ISTAT1_SRUN) == 0)
|
|
1183 |
lsi_execute_script(s);
|
|
1184 |
break;
|
|
1185 |
CASE_SET_REG32(dsps, 0x30)
|
|
1186 |
CASE_SET_REG32(scratch[0], 0x34)
|
|
1187 |
case 0x38: /* DMODE */
|
|
1188 |
if (val & (LSI_DMODE_SIOM | LSI_DMODE_DIOM)) {
|
|
1189 |
BADF("IO mappings not implemented\n");
|
|
1190 |
}
|
|
1191 |
s->dmode = val;
|
|
1192 |
break;
|
|
1193 |
case 0x39: /* DIEN */
|
|
1194 |
s->dien = val;
|
|
1195 |
lsi_update_irq(s);
|
|
1196 |
break;
|
|
1197 |
case 0x3b: /* DCNTL */
|
|
1198 |
s->dcntl = val & ~(LSI_DCNTL_PFF | LSI_DCNTL_STD);
|
|
1199 |
if ((val & LSI_DCNTL_STD) && (s->istat1 & LSI_ISTAT1_SRUN) == 0)
|
|
1200 |
lsi_execute_script(s);
|
|
1201 |
break;
|
|
1202 |
case 0x40: /* SIEN0 */
|
|
1203 |
s->sien0 = val;
|
|
1204 |
lsi_update_irq(s);
|
|
1205 |
break;
|
|
1206 |
case 0x41: /* SIEN1 */
|
|
1207 |
s->sien1 = val;
|
|
1208 |
lsi_update_irq(s);
|
|
1209 |
break;
|
|
1210 |
case 0x47: /* GPCNTL0 */
|
|
1211 |
break;
|
|
1212 |
case 0x48: /* STIME0 */
|
|
1213 |
s->stime0 = val;
|
|
1214 |
break;
|
|
1215 |
case 0x49: /* STIME1 */
|
|
1216 |
if (val & 0xf) {
|
|
1217 |
DPRINTF("General purpose timer not implemented\n");
|
|
1218 |
/* ??? Raising the interrupt immediately seems to be sufficient
|
|
1219 |
to keep the FreeBSD driver happy. */
|
|
1220 |
lsi_script_scsi_interrupt(s, 0, LSI_SIST1_GEN);
|
|
1221 |
}
|
|
1222 |
break;
|
|
1223 |
case 0x4a: /* RESPID0 */
|
|
1224 |
s->respid0 = val;
|
|
1225 |
break;
|
|
1226 |
case 0x4b: /* RESPID1 */
|
|
1227 |
s->respid1 = val;
|
|
1228 |
break;
|
|
1229 |
case 0x4d: /* STEST1 */
|
|
1230 |
s->stest1 = val;
|
|
1231 |
break;
|
|
1232 |
case 0x4e: /* STEST2 */
|
|
1233 |
if (val & 1) {
|
|
1234 |
BADF("Low level mode not implemented\n");
|
|
1235 |
}
|
|
1236 |
s->stest2 = val;
|
|
1237 |
break;
|
|
1238 |
case 0x4f: /* STEST3 */
|
|
1239 |
if (val & 0x41) {
|
|
1240 |
BADF("SCSI FIFO test mode not implemented\n");
|
|
1241 |
}
|
|
1242 |
s->stest3 = val;
|
|
1243 |
break;
|
|
1244 |
case 0x56: /* CCNTL0 */
|
|
1245 |
s->ccntl0 = val;
|
|
1246 |
break;
|
|
1247 |
case 0x57: /* CCNTL1 */
|
|
1248 |
s->ccntl1 = val;
|
|
1249 |
break;
|
|
1250 |
CASE_SET_REG32(mmrs, 0xa0)
|
|
1251 |
CASE_SET_REG32(mmws, 0xa4)
|
|
1252 |
CASE_SET_REG32(sfs, 0xa8)
|
|
1253 |
CASE_SET_REG32(drs, 0xac)
|
|
1254 |
CASE_SET_REG32(sbms, 0xb0)
|
|
1255 |
CASE_SET_REG32(dmbs, 0xb4)
|
|
1256 |
CASE_SET_REG32(dnad64, 0xb8)
|
|
1257 |
CASE_SET_REG32(pmjad1, 0xc0)
|
|
1258 |
CASE_SET_REG32(pmjad2, 0xc4)
|
|
1259 |
CASE_SET_REG32(rbc, 0xc8)
|
|
1260 |
CASE_SET_REG32(ua, 0xcc)
|
|
1261 |
CASE_SET_REG32(ia, 0xd4)
|
|
1262 |
CASE_SET_REG32(sbc, 0xd8)
|
|
1263 |
CASE_SET_REG32(csbc, 0xdc)
|
|
1264 |
default:
|
|
1265 |
if (offset >= 0x5c && offset < 0xa0) {
|
|
1266 |
int n;
|
|
1267 |
int shift;
|
|
1268 |
n = (offset - 0x58) >> 2;
|
|
1269 |
shift = (offset & 3) * 8;
|
|
1270 |
s->scratch[n] &= ~(0xff << shift);
|
|
1271 |
s->scratch[n] |= (val & 0xff) << shift;
|
|
1272 |
} else {
|
|
1273 |
BADF("Unhandled writeb 0x%x = 0x%x\n", offset, val);
|
|
1274 |
}
|
|
1275 |
}
|
|
1276 |
#undef CASE_SET_REG32
|
|
1277 |
}
|
|
1278 |
|
|
1279 |
static void lsi_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
1280 |
{
|
|
1281 |
LSIState *s = (LSIState *)opaque;
|
|
1282 |
|
|
1283 |
lsi_reg_writeb(s, addr & 0xff, val);
|
|
1284 |
}
|
|
1285 |
|
|
1286 |
static void lsi_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
1287 |
{
|
|
1288 |
LSIState *s = (LSIState *)opaque;
|
|
1289 |
|
|
1290 |
addr &= 0xff;
|
|
1291 |
lsi_reg_writeb(s, addr, val & 0xff);
|
|
1292 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff);
|
|
1293 |
}
|
|
1294 |
|
|
1295 |
static void lsi_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
1296 |
{
|
|
1297 |
LSIState *s = (LSIState *)opaque;
|
|
1298 |
|
|
1299 |
addr &= 0xff;
|
|
1300 |
lsi_reg_writeb(s, addr, val & 0xff);
|
|
1301 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff);
|
|
1302 |
lsi_reg_writeb(s, addr + 2, (val >> 16) & 0xff);
|
|
1303 |
lsi_reg_writeb(s, addr + 3, (val >> 24) & 0xff);
|
|
1304 |
}
|
|
1305 |
|
|
1306 |
static uint32_t lsi_mmio_readb(void *opaque, target_phys_addr_t addr)
|
|
1307 |
{
|
|
1308 |
LSIState *s = (LSIState *)opaque;
|
|
1309 |
|
|
1310 |
return lsi_reg_readb(s, addr & 0xff);
|
|
1311 |
}
|
|
1312 |
|
|
1313 |
static uint32_t lsi_mmio_readw(void *opaque, target_phys_addr_t addr)
|
|
1314 |
{
|
|
1315 |
LSIState *s = (LSIState *)opaque;
|
|
1316 |
uint32_t val;
|
|
1317 |
|
|
1318 |
addr &= 0xff;
|
|
1319 |
val = lsi_reg_readb(s, addr);
|
|
1320 |
val |= lsi_reg_readb(s, addr + 1) << 8;
|
|
1321 |
return val;
|
|
1322 |
}
|
|
1323 |
|
|
1324 |
static uint32_t lsi_mmio_readl(void *opaque, target_phys_addr_t addr)
|
|
1325 |
{
|
|
1326 |
LSIState *s = (LSIState *)opaque;
|
|
1327 |
uint32_t val;
|
|
1328 |
addr &= 0xff;
|
|
1329 |
val = lsi_reg_readb(s, addr);
|
|
1330 |
val |= lsi_reg_readb(s, addr + 1) << 8;
|
|
1331 |
val |= lsi_reg_readb(s, addr + 2) << 16;
|
|
1332 |
val |= lsi_reg_readb(s, addr + 3) << 24;
|
|
1333 |
return val;
|
|
1334 |
}
|
|
1335 |
|
|
1336 |
static CPUReadMemoryFunc *lsi_mmio_readfn[3] = {
|
|
1337 |
lsi_mmio_readb,
|
|
1338 |
lsi_mmio_readw,
|
|
1339 |
lsi_mmio_readl,
|
|
1340 |
};
|
|
1341 |
|
|
1342 |
static CPUWriteMemoryFunc *lsi_mmio_writefn[3] = {
|
|
1343 |
lsi_mmio_writeb,
|
|
1344 |
lsi_mmio_writew,
|
|
1345 |
lsi_mmio_writel,
|
|
1346 |
};
|
|
1347 |
|
|
1348 |
static void lsi_ram_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
1349 |
{
|
|
1350 |
LSIState *s = (LSIState *)opaque;
|
|
1351 |
uint32_t newval;
|
|
1352 |
int shift;
|
|
1353 |
|
|
1354 |
addr &= 0x1fff;
|
|
1355 |
newval = s->script_ram[addr >> 2];
|
|
1356 |
shift = (addr & 3) * 8;
|
|
1357 |
newval &= ~(0xff << shift);
|
|
1358 |
newval |= val << shift;
|
|
1359 |
s->script_ram[addr >> 2] = newval;
|
|
1360 |
}
|
|
1361 |
|
|
1362 |
static void lsi_ram_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
1363 |
{
|
|
1364 |
LSIState *s = (LSIState *)opaque;
|
|
1365 |
uint32_t newval;
|
|
1366 |
|
|
1367 |
addr &= 0x1fff;
|
|
1368 |
newval = s->script_ram[addr >> 2];
|
|
1369 |
if (addr & 2) {
|
|
1370 |
newval = (newval & 0xffff) | (val << 16);
|
|
1371 |
} else {
|
|
1372 |
newval = (newval & 0xffff0000) | val;
|
|
1373 |
}
|
|
1374 |
s->script_ram[addr >> 2] = newval;
|
|
1375 |
}
|
|
1376 |
|
|
1377 |
|
|
1378 |
static void lsi_ram_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
1379 |
{
|
|
1380 |
LSIState *s = (LSIState *)opaque;
|
|
1381 |
|
|
1382 |
addr &= 0x1fff;
|
|
1383 |
s->script_ram[addr >> 2] = val;
|
|
1384 |
}
|
|
1385 |
|
|
1386 |
static uint32_t lsi_ram_readb(void *opaque, target_phys_addr_t addr)
|
|
1387 |
{
|
|
1388 |
LSIState *s = (LSIState *)opaque;
|
|
1389 |
uint32_t val;
|
|
1390 |
|
|
1391 |
addr &= 0x1fff;
|
|
1392 |
val = s->script_ram[addr >> 2];
|
|
1393 |
val >>= (addr & 3) * 8;
|
|
1394 |
return val & 0xff;
|
|
1395 |
}
|
|
1396 |
|
|
1397 |
static uint32_t lsi_ram_readw(void *opaque, target_phys_addr_t addr)
|
|
1398 |
{
|
|
1399 |
LSIState *s = (LSIState *)opaque;
|
|
1400 |
uint32_t val;
|
|
1401 |
|
|
1402 |
addr &= 0x1fff;
|
|
1403 |
val = s->script_ram[addr >> 2];
|
|
1404 |
if (addr & 2)
|
|
1405 |
val >>= 16;
|
|
1406 |
return le16_to_cpu(val);
|
|
1407 |
}
|
|
1408 |
|
|
1409 |
static uint32_t lsi_ram_readl(void *opaque, target_phys_addr_t addr)
|
|
1410 |
{
|
|
1411 |
LSIState *s = (LSIState *)opaque;
|
|
1412 |
|
|
1413 |
addr &= 0x1fff;
|
|
1414 |
return le32_to_cpu(s->script_ram[addr >> 2]);
|
|
1415 |
}
|
|
1416 |
|
|
1417 |
static CPUReadMemoryFunc *lsi_ram_readfn[3] = {
|
|
1418 |
lsi_ram_readb,
|
|
1419 |
lsi_ram_readw,
|
|
1420 |
lsi_ram_readl,
|
|
1421 |
};
|
|
1422 |
|
|
1423 |
static CPUWriteMemoryFunc *lsi_ram_writefn[3] = {
|
|
1424 |
lsi_ram_writeb,
|
|
1425 |
lsi_ram_writew,
|
|
1426 |
lsi_ram_writel,
|
|
1427 |
};
|
|
1428 |
|
|
1429 |
static uint32_t lsi_io_readb(void *opaque, uint32_t addr)
|
|
1430 |
{
|
|
1431 |
LSIState *s = (LSIState *)opaque;
|
|
1432 |
return lsi_reg_readb(s, addr & 0xff);
|
|
1433 |
}
|
|
1434 |
|
|
1435 |
static uint32_t lsi_io_readw(void *opaque, uint32_t addr)
|
|
1436 |
{
|
|
1437 |
LSIState *s = (LSIState *)opaque;
|
|
1438 |
uint32_t val;
|
|
1439 |
addr &= 0xff;
|
|
1440 |
val = lsi_reg_readb(s, addr);
|
|
1441 |
val |= lsi_reg_readb(s, addr + 1) << 8;
|
|
1442 |
return val;
|
|
1443 |
}
|
|
1444 |
|
|
1445 |
static uint32_t lsi_io_readl(void *opaque, uint32_t addr)
|
|
1446 |
{
|
|
1447 |
LSIState *s = (LSIState *)opaque;
|
|
1448 |
uint32_t val;
|
|
1449 |
addr &= 0xff;
|
|
1450 |
val = lsi_reg_readb(s, addr);
|
|
1451 |
val |= lsi_reg_readb(s, addr + 1) << 8;
|
|
1452 |
val |= lsi_reg_readb(s, addr + 2) << 16;
|
|
1453 |
val |= lsi_reg_readb(s, addr + 3) << 24;
|
|
1454 |
return val;
|
|
1455 |
}
|
|
1456 |
|
|
1457 |
static void lsi_io_writeb(void *opaque, uint32_t addr, uint32_t val)
|
|
1458 |
{
|
|
1459 |
LSIState *s = (LSIState *)opaque;
|
|
1460 |
lsi_reg_writeb(s, addr & 0xff, val);
|
|
1461 |
}
|
|
1462 |
|
|
1463 |
static void lsi_io_writew(void *opaque, uint32_t addr, uint32_t val)
|
|
1464 |
{
|
|
1465 |
LSIState *s = (LSIState *)opaque;
|
|
1466 |
addr &= 0xff;
|
|
1467 |
lsi_reg_writeb(s, addr, val & 0xff);
|
|
1468 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff);
|
|
1469 |
}
|
|
1470 |
|
|
1471 |
static void lsi_io_writel(void *opaque, uint32_t addr, uint32_t val)
|
|
1472 |
{
|
|
1473 |
LSIState *s = (LSIState *)opaque;
|