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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 "hw.h" |
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#include "pci.h" |
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#include "scsi-disk.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, 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: error: " 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: error: " fmt , ##args);} while (0) |
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#endif
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|
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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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|
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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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|
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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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|
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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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/* 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 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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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 = disconect, 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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SCSIDevice *scsi_dev[LSI_MAX_DEVS]; |
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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 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 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[18]; /* 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->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->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 void lsi_execute_script(LSIState *s); |
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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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} |
339 |
|
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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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} |
344 |
|
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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; |
349 |
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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; |
358 |
} else {
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s->istat0 &= ~LSI_ISTAT0_DIP; |
360 |
} |
361 |
|
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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; |
366 |
} else {
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s->istat0 &= ~LSI_ISTAT0_SIP; |
368 |
} |
369 |
if (s->istat0 & LSI_ISTAT0_INTF)
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level = 1;
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|
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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); |
375 |
last_level = level; |
376 |
} |
377 |
qemu_set_irq(s->pci_dev.irq[0], level);
|
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} |
379 |
|
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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) |
382 |
{ |
383 |
uint32_t mask0; |
384 |
uint32_t mask1; |
385 |
|
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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); |
388 |
s->sist0 |= stat0; |
389 |
s->sist1 |= stat1; |
390 |
/* 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); |
394 |
mask1 = s->sien1 | ~(LSI_SIST1_GEN | LSI_SIST1_HTH); |
395 |
mask1 &= ~LSI_SIST1_STO; |
396 |
if (s->sist0 & mask0 || s->sist1 & mask1) {
|
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lsi_stop_script(s); |
398 |
} |
399 |
lsi_update_irq(s); |
400 |
} |
401 |
|
402 |
/* Stop SCRIPTS execution and raise a DMA interrupt. */
|
403 |
static void lsi_script_dma_interrupt(LSIState *s, int stat) |
404 |
{ |
405 |
DPRINTF("DMA Interrupt 0x%x prev 0x%x\n", stat, s->dstat);
|
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s->dstat |= stat; |
407 |
lsi_update_irq(s); |
408 |
lsi_stop_script(s); |
409 |
} |
410 |
|
411 |
static inline void lsi_set_phase(LSIState *s, int phase) |
412 |
{ |
413 |
s->sstat1 = (s->sstat1 & ~PHASE_MASK) | phase; |
414 |
} |
415 |
|
416 |
static void lsi_bad_phase(LSIState *s, int out, int new_phase) |
417 |
{ |
418 |
/* Trigger a phase mismatch. */
|
419 |
if (s->ccntl0 & LSI_CCNTL0_ENPMJ) {
|
420 |
if ((s->ccntl0 & LSI_CCNTL0_PMJCTL) || out) {
|
421 |
s->dsp = s->pmjad1; |
422 |
} else {
|
423 |
s->dsp = s->pmjad2; |
424 |
} |
425 |
DPRINTF("Data phase mismatch jump to %08x\n", s->dsp);
|
426 |
} else {
|
427 |
DPRINTF("Phase mismatch interrupt\n");
|
428 |
lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0);
|
429 |
lsi_stop_script(s); |
430 |
} |
431 |
lsi_set_phase(s, new_phase); |
432 |
} |
433 |
|
434 |
|
435 |
/* Resume SCRIPTS execution after a DMA operation. */
|
436 |
static void lsi_resume_script(LSIState *s) |
437 |
{ |
438 |
if (s->waiting != 2) { |
439 |
s->waiting = 0;
|
440 |
lsi_execute_script(s); |
441 |
} else {
|
442 |
s->waiting = 0;
|
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} |
444 |
} |
445 |
|
446 |
/* Initiate a SCSI layer data transfer. */
|
447 |
static void lsi_do_dma(LSIState *s, int out) |
448 |
{ |
449 |
uint32_t count; |
450 |
uint32_t addr; |
451 |
|
452 |
if (!s->current_dma_len) {
|
453 |
/* Wait until data is available. */
|
454 |
DPRINTF("DMA no data available\n");
|
455 |
return;
|
456 |
} |
457 |
|
458 |
count = s->dbc; |
459 |
if (count > s->current_dma_len)
|
460 |
count = s->current_dma_len; |
461 |
DPRINTF("DMA addr=0x%08x len=%d\n", s->dnad, count);
|
462 |
|
463 |
addr = s->dnad; |
464 |
s->csbc += count; |
465 |
s->dnad += count; |
466 |
s->dbc -= count; |
467 |
|
468 |
if (s->dma_buf == NULL) { |
469 |
s->dma_buf = s->current_dev->get_buf(s->current_dev, |
470 |
s->current_tag); |
471 |
} |
472 |
|
473 |
/* ??? Set SFBR to first data byte. */
|
474 |
if (out) {
|
475 |
cpu_physical_memory_read(addr, s->dma_buf, count); |
476 |
} else {
|
477 |
cpu_physical_memory_write(addr, s->dma_buf, count); |
478 |
} |
479 |
s->current_dma_len -= count; |
480 |
if (s->current_dma_len == 0) { |
481 |
s->dma_buf = NULL;
|
482 |
if (out) {
|
483 |
/* Write the data. */
|
484 |
s->current_dev->write_data(s->current_dev, s->current_tag); |
485 |
} else {
|
486 |
/* Request any remaining data. */
|
487 |
s->current_dev->read_data(s->current_dev, s->current_tag); |
488 |
} |
489 |
} else {
|
490 |
s->dma_buf += count; |
491 |
lsi_resume_script(s); |
492 |
} |
493 |
} |
494 |
|
495 |
|
496 |
/* Add a command to the queue. */
|
497 |
static void lsi_queue_command(LSIState *s) |
498 |
{ |
499 |
lsi_queue *p; |
500 |
|
501 |
DPRINTF("Queueing tag=0x%x\n", s->current_tag);
|
502 |
if (s->queue_len == s->active_commands) {
|
503 |
s->queue_len++; |
504 |
s->queue = realloc(s->queue, s->queue_len * sizeof(lsi_queue));
|
505 |
} |
506 |
p = &s->queue[s->active_commands++]; |
507 |
p->tag = s->current_tag; |
508 |
p->pending = 0;
|
509 |
p->out = (s->sstat1 & PHASE_MASK) == PHASE_DO; |
510 |
} |
511 |
|
512 |
/* Queue a byte for a MSG IN phase. */
|
513 |
static void lsi_add_msg_byte(LSIState *s, uint8_t data) |
514 |
{ |
515 |
if (s->msg_len >= LSI_MAX_MSGIN_LEN) {
|
516 |
BADF("MSG IN data too long\n");
|
517 |
} else {
|
518 |
DPRINTF("MSG IN 0x%02x\n", data);
|
519 |
s->msg[s->msg_len++] = data; |
520 |
} |
521 |
} |
522 |
|
523 |
/* Perform reselection to continue a command. */
|
524 |
static void lsi_reselect(LSIState *s, uint32_t tag) |
525 |
{ |
526 |
lsi_queue *p; |
527 |
int n;
|
528 |
int id;
|
529 |
|
530 |
p = NULL;
|
531 |
for (n = 0; n < s->active_commands; n++) { |
532 |
p = &s->queue[n]; |
533 |
if (p->tag == tag)
|
534 |
break;
|
535 |
} |
536 |
if (n == s->active_commands) {
|
537 |
BADF("Reselected non-existant command tag=0x%x\n", tag);
|
538 |
return;
|
539 |
} |
540 |
id = (tag >> 8) & 0xf; |
541 |
s->ssid = id | 0x80;
|
542 |
DPRINTF("Reselected target %d\n", id);
|
543 |
s->current_dev = s->scsi_dev[id]; |
544 |
s->current_tag = tag; |
545 |
s->scntl1 |= LSI_SCNTL1_CON; |
546 |
lsi_set_phase(s, PHASE_MI); |
547 |
s->msg_action = p->out ? 2 : 3; |
548 |
s->current_dma_len = p->pending; |
549 |
s->dma_buf = NULL;
|
550 |
lsi_add_msg_byte(s, 0x80);
|
551 |
if (s->current_tag & LSI_TAG_VALID) {
|
552 |
lsi_add_msg_byte(s, 0x20);
|
553 |
lsi_add_msg_byte(s, tag & 0xff);
|
554 |
} |
555 |
|
556 |
s->active_commands--; |
557 |
if (n != s->active_commands) {
|
558 |
s->queue[n] = s->queue[s->active_commands]; |
559 |
} |
560 |
} |
561 |
|
562 |
/* Record that data is available for a queued command. Returns zero if
|
563 |
the device was reselected, nonzero if the IO is deferred. */
|
564 |
static int lsi_queue_tag(LSIState *s, uint32_t tag, uint32_t arg) |
565 |
{ |
566 |
lsi_queue *p; |
567 |
int i;
|
568 |
for (i = 0; i < s->active_commands; i++) { |
569 |
p = &s->queue[i]; |
570 |
if (p->tag == tag) {
|
571 |
if (p->pending) {
|
572 |
BADF("Multiple IO pending for tag %d\n", tag);
|
573 |
} |
574 |
p->pending = arg; |
575 |
if (s->waiting == 1) { |
576 |
/* Reselect device. */
|
577 |
lsi_reselect(s, tag); |
578 |
return 0; |
579 |
} else {
|
580 |
DPRINTF("Queueing IO tag=0x%x\n", tag);
|
581 |
p->pending = arg; |
582 |
return 1; |
583 |
} |
584 |
} |
585 |
} |
586 |
BADF("IO with unknown tag %d\n", tag);
|
587 |
return 1; |
588 |
} |
589 |
|
590 |
/* Callback to indicate that the SCSI layer has completed a transfer. */
|
591 |
static void lsi_command_complete(void *opaque, int reason, uint32_t tag, |
592 |
uint32_t arg) |
593 |
{ |
594 |
LSIState *s = (LSIState *)opaque; |
595 |
int out;
|
596 |
|
597 |
out = (s->sstat1 & PHASE_MASK) == PHASE_DO; |
598 |
if (reason == SCSI_REASON_DONE) {
|
599 |
DPRINTF("Command complete sense=%d\n", (int)arg); |
600 |
s->sense = arg; |
601 |
s->command_complete = 2;
|
602 |
if (s->waiting && s->dbc != 0) { |
603 |
/* Raise phase mismatch for short transfers. */
|
604 |
lsi_bad_phase(s, out, PHASE_ST); |
605 |
} else {
|
606 |
lsi_set_phase(s, PHASE_ST); |
607 |
} |
608 |
lsi_resume_script(s); |
609 |
return;
|
610 |
} |
611 |
|
612 |
if (s->waiting == 1 || tag != s->current_tag) { |
613 |
if (lsi_queue_tag(s, tag, arg))
|
614 |
return;
|
615 |
} |
616 |
DPRINTF("Data ready tag=0x%x len=%d\n", tag, arg);
|
617 |
s->current_dma_len = arg; |
618 |
s->command_complete = 1;
|
619 |
if (!s->waiting)
|
620 |
return;
|
621 |
if (s->waiting == 1 || s->dbc == 0) { |
622 |
lsi_resume_script(s); |
623 |
} else {
|
624 |
lsi_do_dma(s, out); |
625 |
} |
626 |
} |
627 |
|
628 |
static void lsi_do_command(LSIState *s) |
629 |
{ |
630 |
uint8_t buf[16];
|
631 |
int n;
|
632 |
|
633 |
DPRINTF("Send command len=%d\n", s->dbc);
|
634 |
if (s->dbc > 16) |
635 |
s->dbc = 16;
|
636 |
cpu_physical_memory_read(s->dnad, buf, s->dbc); |
637 |
s->sfbr = buf[0];
|
638 |
s->command_complete = 0;
|
639 |
n = s->current_dev->send_command(s->current_dev, s->current_tag, buf, |
640 |
s->current_lun); |
641 |
if (n > 0) { |
642 |
lsi_set_phase(s, PHASE_DI); |
643 |
s->current_dev->read_data(s->current_dev, s->current_tag); |
644 |
} else if (n < 0) { |
645 |
lsi_set_phase(s, PHASE_DO); |
646 |
s->current_dev->write_data(s->current_dev, s->current_tag); |
647 |
} |
648 |
|
649 |
if (!s->command_complete) {
|
650 |
if (n) {
|
651 |
/* Command did not complete immediately so disconnect. */
|
652 |
lsi_add_msg_byte(s, 2); /* SAVE DATA POINTER */ |
653 |
lsi_add_msg_byte(s, 4); /* DISCONNECT */ |
654 |
/* wait data */
|
655 |
lsi_set_phase(s, PHASE_MI); |
656 |
s->msg_action = 1;
|
657 |
lsi_queue_command(s); |
658 |
} else {
|
659 |
/* wait command complete */
|
660 |
lsi_set_phase(s, PHASE_DI); |
661 |
} |
662 |
} |
663 |
} |
664 |
|
665 |
static void lsi_do_status(LSIState *s) |
666 |
{ |
667 |
uint8_t sense; |
668 |
DPRINTF("Get status len=%d sense=%d\n", s->dbc, s->sense);
|
669 |
if (s->dbc != 1) |
670 |
BADF("Bad Status move\n");
|
671 |
s->dbc = 1;
|
672 |
sense = s->sense; |
673 |
s->sfbr = sense; |
674 |
cpu_physical_memory_write(s->dnad, &sense, 1);
|
675 |
lsi_set_phase(s, PHASE_MI); |
676 |
s->msg_action = 1;
|
677 |
lsi_add_msg_byte(s, 0); /* COMMAND COMPLETE */ |
678 |
} |
679 |
|
680 |
static void lsi_disconnect(LSIState *s) |
681 |
{ |
682 |
s->scntl1 &= ~LSI_SCNTL1_CON; |
683 |
s->sstat1 &= ~PHASE_MASK; |
684 |
} |
685 |
|
686 |
static void lsi_do_msgin(LSIState *s) |
687 |
{ |
688 |
int len;
|
689 |
DPRINTF("Message in len=%d/%d\n", s->dbc, s->msg_len);
|
690 |
s->sfbr = s->msg[0];
|
691 |
len = s->msg_len; |
692 |
if (len > s->dbc)
|
693 |
len = s->dbc; |
694 |
cpu_physical_memory_write(s->dnad, s->msg, len); |
695 |
/* Linux drivers rely on the last byte being in the SIDL. */
|
696 |
s->sidl = s->msg[len - 1];
|
697 |
s->msg_len -= len; |
698 |
if (s->msg_len) {
|
699 |
memmove(s->msg, s->msg + len, s->msg_len); |
700 |
} else {
|
701 |
/* ??? Check if ATN (not yet implemented) is asserted and maybe
|
702 |
switch to PHASE_MO. */
|
703 |
switch (s->msg_action) {
|
704 |
case 0: |
705 |
lsi_set_phase(s, PHASE_CMD); |
706 |
break;
|
707 |
case 1: |
708 |
lsi_disconnect(s); |
709 |
break;
|
710 |
case 2: |
711 |
lsi_set_phase(s, PHASE_DO); |
712 |
break;
|
713 |
case 3: |
714 |
lsi_set_phase(s, PHASE_DI); |
715 |
break;
|
716 |
default:
|
717 |
abort(); |
718 |
} |
719 |
} |
720 |
} |
721 |
|
722 |
/* Read the next byte during a MSGOUT phase. */
|
723 |
static uint8_t lsi_get_msgbyte(LSIState *s)
|
724 |
{ |
725 |
uint8_t data; |
726 |
cpu_physical_memory_read(s->dnad, &data, 1);
|
727 |
s->dnad++; |
728 |
s->dbc--; |
729 |
return data;
|
730 |
} |
731 |
|
732 |
static void lsi_do_msgout(LSIState *s) |
733 |
{ |
734 |
uint8_t msg; |
735 |
int len;
|
736 |
|
737 |
DPRINTF("MSG out len=%d\n", s->dbc);
|
738 |
while (s->dbc) {
|
739 |
msg = lsi_get_msgbyte(s); |
740 |
s->sfbr = msg; |
741 |
|
742 |
switch (msg) {
|
743 |
case 0x00: |
744 |
DPRINTF("MSG: Disconnect\n");
|
745 |
lsi_disconnect(s); |
746 |
break;
|
747 |
case 0x08: |
748 |
DPRINTF("MSG: No Operation\n");
|
749 |
lsi_set_phase(s, PHASE_CMD); |
750 |
break;
|
751 |
case 0x01: |
752 |
len = lsi_get_msgbyte(s); |
753 |
msg = lsi_get_msgbyte(s); |
754 |
DPRINTF("Extended message 0x%x (len %d)\n", msg, len);
|
755 |
switch (msg) {
|
756 |
case 1: |
757 |
DPRINTF("SDTR (ignored)\n");
|
758 |
s->dbc -= 2;
|
759 |
break;
|
760 |
case 3: |
761 |
DPRINTF("WDTR (ignored)\n");
|
762 |
s->dbc -= 1;
|
763 |
break;
|
764 |
default:
|
765 |
goto bad;
|
766 |
} |
767 |
break;
|
768 |
case 0x20: /* SIMPLE queue */ |
769 |
s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; |
770 |
DPRINTF("SIMPLE queue tag=0x%x\n", s->current_tag & 0xff); |
771 |
break;
|
772 |
case 0x21: /* HEAD of queue */ |
773 |
BADF("HEAD queue not implemented\n");
|
774 |
s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; |
775 |
break;
|
776 |
case 0x22: /* ORDERED queue */ |
777 |
BADF("ORDERED queue not implemented\n");
|
778 |
s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; |
779 |
break;
|
780 |
default:
|
781 |
if ((msg & 0x80) == 0) { |
782 |
goto bad;
|
783 |
} |
784 |
s->current_lun = msg & 7;
|
785 |
DPRINTF("Select LUN %d\n", s->current_lun);
|
786 |
lsi_set_phase(s, PHASE_CMD); |
787 |
break;
|
788 |
} |
789 |
} |
790 |
return;
|
791 |
bad:
|
792 |
BADF("Unimplemented message 0x%02x\n", msg);
|
793 |
lsi_set_phase(s, PHASE_MI); |
794 |
lsi_add_msg_byte(s, 7); /* MESSAGE REJECT */ |
795 |
s->msg_action = 0;
|
796 |
} |
797 |
|
798 |
/* Sign extend a 24-bit value. */
|
799 |
static inline int32_t sxt24(int32_t n) |
800 |
{ |
801 |
return (n << 8) >> 8; |
802 |
} |
803 |
|
804 |
static void lsi_memcpy(LSIState *s, uint32_t dest, uint32_t src, int count) |
805 |
{ |
806 |
int n;
|
807 |
uint8_t buf[TARGET_PAGE_SIZE]; |
808 |
|
809 |
DPRINTF("memcpy dest 0x%08x src 0x%08x count %d\n", dest, src, count);
|
810 |
while (count) {
|
811 |
n = (count > TARGET_PAGE_SIZE) ? TARGET_PAGE_SIZE : count; |
812 |
cpu_physical_memory_read(src, buf, n); |
813 |
cpu_physical_memory_write(dest, buf, n); |
814 |
src += n; |
815 |
dest += n; |
816 |
count -= n; |
817 |
} |
818 |
} |
819 |
|
820 |
static void lsi_wait_reselect(LSIState *s) |
821 |
{ |
822 |
int i;
|
823 |
DPRINTF("Wait Reselect\n");
|
824 |
if (s->current_dma_len)
|
825 |
BADF("Reselect with pending DMA\n");
|
826 |
for (i = 0; i < s->active_commands; i++) { |
827 |
if (s->queue[i].pending) {
|
828 |
lsi_reselect(s, s->queue[i].tag); |
829 |
break;
|
830 |
} |
831 |
} |
832 |
if (s->current_dma_len == 0) { |
833 |
s->waiting = 1;
|
834 |
} |
835 |
} |
836 |
|
837 |
static void lsi_execute_script(LSIState *s) |
838 |
{ |
839 |
uint32_t insn; |
840 |
uint32_t addr; |
841 |
int opcode;
|
842 |
|
843 |
s->istat1 |= LSI_ISTAT1_SRUN; |
844 |
again:
|
845 |
insn = read_dword(s, s->dsp); |
846 |
addr = read_dword(s, s->dsp + 4);
|
847 |
DPRINTF("SCRIPTS dsp=%08x opcode %08x arg %08x\n", s->dsp, insn, addr);
|
848 |
s->dsps = addr; |
849 |
s->dcmd = insn >> 24;
|
850 |
s->dsp += 8;
|
851 |
switch (insn >> 30) { |
852 |
case 0: /* Block move. */ |
853 |
if (s->sist1 & LSI_SIST1_STO) {
|
854 |
DPRINTF("Delayed select timeout\n");
|
855 |
lsi_stop_script(s); |
856 |
break;
|
857 |
} |
858 |
s->dbc = insn & 0xffffff;
|
859 |
s->rbc = s->dbc; |
860 |
if (insn & (1 << 29)) { |
861 |
/* Indirect addressing. */
|
862 |
addr = read_dword(s, addr); |
863 |
} else if (insn & (1 << 28)) { |
864 |
uint32_t buf[2];
|
865 |
int32_t offset; |
866 |
/* Table indirect addressing. */
|
867 |
offset = sxt24(addr); |
868 |
cpu_physical_memory_read(s->dsa + offset, (uint8_t *)buf, 8);
|
869 |
s->dbc = cpu_to_le32(buf[0]);
|
870 |
s->rbc = s->dbc; |
871 |
addr = cpu_to_le32(buf[1]);
|
872 |
} |
873 |
if ((s->sstat1 & PHASE_MASK) != ((insn >> 24) & 7)) { |
874 |
DPRINTF("Wrong phase got %d expected %d\n",
|
875 |
s->sstat1 & PHASE_MASK, (insn >> 24) & 7); |
876 |
lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0);
|
877 |
break;
|
878 |
} |
879 |
s->dnad = addr; |
880 |
/* ??? Set ESA. */
|
881 |
s->ia = s->dsp - 8;
|
882 |
switch (s->sstat1 & 0x7) { |
883 |
case PHASE_DO:
|
884 |
s->waiting = 2;
|
885 |
lsi_do_dma(s, 1);
|
886 |
if (s->waiting)
|
887 |
s->waiting = 3;
|
888 |
break;
|
889 |
case PHASE_DI:
|
890 |
s->waiting = 2;
|
891 |
lsi_do_dma(s, 0);
|
892 |
if (s->waiting)
|
893 |
s->waiting = 3;
|
894 |
break;
|
895 |
case PHASE_CMD:
|
896 |
lsi_do_command(s); |
897 |
break;
|
898 |
case PHASE_ST:
|
899 |
lsi_do_status(s); |
900 |
break;
|
901 |
case PHASE_MO:
|
902 |
lsi_do_msgout(s); |
903 |
break;
|
904 |
case PHASE_MI:
|
905 |
lsi_do_msgin(s); |
906 |
break;
|
907 |
default:
|
908 |
BADF("Unimplemented phase %d\n", s->sstat1 & PHASE_MASK);
|
909 |
exit(1);
|
910 |
} |
911 |
s->dfifo = s->dbc & 0xff;
|
912 |
s->ctest5 = (s->ctest5 & 0xfc) | ((s->dbc >> 8) & 3); |
913 |
s->sbc = s->dbc; |
914 |
s->rbc -= s->dbc; |
915 |
s->ua = addr + s->dbc; |
916 |
break;
|
917 |
|
918 |
case 1: /* IO or Read/Write instruction. */ |
919 |
opcode = (insn >> 27) & 7; |
920 |
if (opcode < 5) { |
921 |
uint32_t id; |
922 |
|
923 |
if (insn & (1 << 25)) { |
924 |
id = read_dword(s, s->dsa + sxt24(insn)); |
925 |
} else {
|
926 |
id = addr; |
927 |
} |
928 |
id = (id >> 16) & 0xf; |
929 |
if (insn & (1 << 26)) { |
930 |
addr = s->dsp + sxt24(addr); |
931 |
} |
932 |
s->dnad = addr; |
933 |
switch (opcode) {
|
934 |
case 0: /* Select */ |
935 |
s->sdid = id; |
936 |
if (s->current_dma_len && (s->ssid & 0xf) == id) { |
937 |
DPRINTF("Already reselected by target %d\n", id);
|
938 |
break;
|
939 |
} |
940 |
s->sstat0 |= LSI_SSTAT0_WOA; |
941 |
s->scntl1 &= ~LSI_SCNTL1_IARB; |
942 |
if (id >= LSI_MAX_DEVS || !s->scsi_dev[id]) {
|
943 |
DPRINTF("Selected absent target %d\n", id);
|
944 |
lsi_script_scsi_interrupt(s, 0, LSI_SIST1_STO);
|
945 |
lsi_disconnect(s); |
946 |
break;
|
947 |
} |
948 |
DPRINTF("Selected target %d%s\n",
|
949 |
id, insn & (1 << 3) ? " ATN" : ""); |
950 |
/* ??? Linux drivers compain when this is set. Maybe
|
951 |
it only applies in low-level mode (unimplemented).
|
952 |
lsi_script_scsi_interrupt(s, LSI_SIST0_CMP, 0); */
|
953 |
s->current_dev = s->scsi_dev[id]; |
954 |
s->current_tag = id << 8;
|
955 |
s->scntl1 |= LSI_SCNTL1_CON; |
956 |
if (insn & (1 << 3)) { |
957 |
s->socl |= LSI_SOCL_ATN; |
958 |
} |
959 |
lsi_set_phase(s, PHASE_MO); |
960 |
break;
|
961 |
case 1: /* Disconnect */ |
962 |
DPRINTF("Wait Disconect\n");
|
963 |
s->scntl1 &= ~LSI_SCNTL1_CON; |
964 |
break;
|
965 |
case 2: /* Wait Reselect */ |
966 |
lsi_wait_reselect(s); |
967 |
break;
|
968 |
case 3: /* Set */ |
969 |
DPRINTF("Set%s%s%s%s\n",
|
970 |
insn & (1 << 3) ? " ATN" : "", |
971 |
insn & (1 << 6) ? " ACK" : "", |
972 |
insn & (1 << 9) ? " TM" : "", |
973 |
insn & (1 << 10) ? " CC" : ""); |
974 |
if (insn & (1 << 3)) { |
975 |
s->socl |= LSI_SOCL_ATN; |
976 |
lsi_set_phase(s, PHASE_MO); |
977 |
} |
978 |
if (insn & (1 << 9)) { |
979 |
BADF("Target mode not implemented\n");
|
980 |
exit(1);
|
981 |
} |
982 |
if (insn & (1 << 10)) |
983 |
s->carry = 1;
|
984 |
break;
|
985 |
case 4: /* Clear */ |
986 |
DPRINTF("Clear%s%s%s%s\n",
|
987 |
insn & (1 << 3) ? " ATN" : "", |
988 |
insn & (1 << 6) ? " ACK" : "", |
989 |
insn & (1 << 9) ? " TM" : "", |
990 |
insn & (1 << 10) ? " CC" : ""); |
991 |
if (insn & (1 << 3)) { |
992 |
s->socl &= ~LSI_SOCL_ATN; |
993 |
} |
994 |
if (insn & (1 << 10)) |
995 |
s->carry = 0;
|
996 |
break;
|
997 |
} |
998 |
} else {
|
999 |
uint8_t op0; |
1000 |
uint8_t op1; |
1001 |
uint8_t data8; |
1002 |
int reg;
|
1003 |
int operator;
|
1004 |
#ifdef DEBUG_LSI
|
1005 |
static const char *opcode_names[3] = |
1006 |
{"Write", "Read", "Read-Modify-Write"}; |
1007 |
static const char *operator_names[8] = |
1008 |
{"MOV", "SHL", "OR", "XOR", "AND", "SHR", "ADD", "ADC"}; |
1009 |
#endif
|
1010 |
|
1011 |
reg = ((insn >> 16) & 0x7f) | (insn & 0x80); |
1012 |
data8 = (insn >> 8) & 0xff; |
1013 |
opcode = (insn >> 27) & 7; |
1014 |
operator = (insn >> 24) & 7; |
1015 |
DPRINTF("%s reg 0x%x %s data8=0x%02x sfbr=0x%02x%s\n",
|
1016 |
opcode_names[opcode - 5], reg,
|
1017 |
operator_names[operator], data8, s->sfbr, |
1018 |
(insn & (1 << 23)) ? " SFBR" : ""); |
1019 |
op0 = op1 = 0;
|
1020 |
switch (opcode) {
|
1021 |
case 5: /* From SFBR */ |
1022 |
op0 = s->sfbr; |
1023 |
op1 = data8; |
1024 |
break;
|
1025 |
case 6: /* To SFBR */ |
1026 |
if (operator)
|
1027 |
op0 = lsi_reg_readb(s, reg); |
1028 |
op1 = data8; |
1029 |
break;
|
1030 |
case 7: /* Read-modify-write */ |
1031 |
if (operator)
|
1032 |
op0 = lsi_reg_readb(s, reg); |
1033 |
if (insn & (1 << 23)) { |
1034 |
op1 = s->sfbr; |
1035 |
} else {
|
1036 |
op1 = data8; |
1037 |
} |
1038 |
break;
|
1039 |
} |
1040 |
|
1041 |
switch (operator) {
|
1042 |
case 0: /* move */ |
1043 |
op0 = op1; |
1044 |
break;
|
1045 |
case 1: /* Shift left */ |
1046 |
op1 = op0 >> 7;
|
1047 |
op0 = (op0 << 1) | s->carry;
|
1048 |
s->carry = op1; |
1049 |
break;
|
1050 |
case 2: /* OR */ |
1051 |
op0 |= op1; |
1052 |
break;
|
1053 |
case 3: /* XOR */ |
1054 |
op0 ^= op1; |
1055 |
break;
|
1056 |
case 4: /* AND */ |
1057 |
op0 &= op1; |
1058 |
break;
|
1059 |
case 5: /* SHR */ |
1060 |
op1 = op0 & 1;
|
1061 |
op0 = (op0 >> 1) | (s->carry << 7); |
1062 |
s->carry = op1; |
1063 |
break;
|
1064 |
case 6: /* ADD */ |
1065 |
op0 += op1; |
1066 |
s->carry = op0 < op1; |
1067 |
break;
|
1068 |
case 7: /* ADC */ |
1069 |
op0 += op1 + s->carry; |
1070 |
if (s->carry)
|
1071 |
s->carry = op0 <= op1; |
1072 |
else
|
1073 |
s->carry = op0 < op1; |
1074 |
break;
|
1075 |
} |
1076 |
|
1077 |
switch (opcode) {
|
1078 |
case 5: /* From SFBR */ |
1079 |
case 7: /* Read-modify-write */ |
1080 |
lsi_reg_writeb(s, reg, op0); |
1081 |
break;
|
1082 |
case 6: /* To SFBR */ |
1083 |
s->sfbr = op0; |
1084 |
break;
|
1085 |
} |
1086 |
} |
1087 |
break;
|
1088 |
|
1089 |
case 2: /* Transfer Control. */ |
1090 |
{ |
1091 |
int cond;
|
1092 |
int jmp;
|
1093 |
|
1094 |
if ((insn & 0x002e0000) == 0) { |
1095 |
DPRINTF("NOP\n");
|
1096 |
break;
|
1097 |
} |
1098 |
if (s->sist1 & LSI_SIST1_STO) {
|
1099 |
DPRINTF("Delayed select timeout\n");
|
1100 |
lsi_stop_script(s); |
1101 |
break;
|
1102 |
} |
1103 |
cond = jmp = (insn & (1 << 19)) != 0; |
1104 |
if (cond == jmp && (insn & (1 << 21))) { |
1105 |
DPRINTF("Compare carry %d\n", s->carry == jmp);
|
1106 |
cond = s->carry != 0;
|
1107 |
} |
1108 |
if (cond == jmp && (insn & (1 << 17))) { |
1109 |
DPRINTF("Compare phase %d %c= %d\n",
|
1110 |
(s->sstat1 & PHASE_MASK), |
1111 |
jmp ? '=' : '!', |
1112 |
((insn >> 24) & 7)); |
1113 |
cond = (s->sstat1 & PHASE_MASK) == ((insn >> 24) & 7); |
1114 |
} |
1115 |
if (cond == jmp && (insn & (1 << 18))) { |
1116 |
uint8_t mask; |
1117 |
|
1118 |
mask = (~insn >> 8) & 0xff; |
1119 |
DPRINTF("Compare data 0x%x & 0x%x %c= 0x%x\n",
|
1120 |
s->sfbr, mask, jmp ? '=' : '!', insn & mask); |
1121 |
cond = (s->sfbr & mask) == (insn & mask); |
1122 |
} |
1123 |
if (cond == jmp) {
|
1124 |
if (insn & (1 << 23)) { |
1125 |
/* Relative address. */
|
1126 |
addr = s->dsp + sxt24(addr); |
1127 |
} |
1128 |
switch ((insn >> 27) & 7) { |
1129 |
case 0: /* Jump */ |
1130 |
DPRINTF("Jump to 0x%08x\n", addr);
|
1131 |
s->dsp = addr; |
1132 |
break;
|
1133 |
case 1: /* Call */ |
1134 |
DPRINTF("Call 0x%08x\n", addr);
|
1135 |
s->temp = s->dsp; |
1136 |
s->dsp = addr; |
1137 |
break;
|
1138 |
case 2: /* Return */ |
1139 |
DPRINTF("Return to 0x%08x\n", s->temp);
|
1140 |
s->dsp = s->temp; |
1141 |
break;
|
1142 |
case 3: /* Interrupt */ |
1143 |
DPRINTF("Interrupt 0x%08x\n", s->dsps);
|
1144 |
if ((insn & (1 << 20)) != 0) { |
1145 |
s->istat0 |= LSI_ISTAT0_INTF; |
1146 |
lsi_update_irq(s); |
1147 |
} else {
|
1148 |
lsi_script_dma_interrupt(s, LSI_DSTAT_SIR); |
1149 |
} |
1150 |
break;
|
1151 |
default:
|
1152 |
DPRINTF("Illegal transfer control\n");
|
1153 |
lsi_script_dma_interrupt(s, LSI_DSTAT_IID); |
1154 |
break;
|
1155 |
} |
1156 |
} else {
|
1157 |
DPRINTF("Control condition failed\n");
|
1158 |
} |
1159 |
} |
1160 |
break;
|
1161 |
|
1162 |
case 3: |
1163 |
if ((insn & (1 << 29)) == 0) { |
1164 |
/* Memory move. */
|
1165 |
uint32_t dest; |
1166 |
/* ??? The docs imply the destination address is loaded into
|
1167 |
the TEMP register. However the Linux drivers rely on
|
1168 |
the value being presrved. */
|
1169 |
dest = read_dword(s, s->dsp); |
1170 |
s->dsp += 4;
|
1171 |
lsi_memcpy(s, dest, addr, insn & 0xffffff);
|
1172 |
} else {
|
1173 |
uint8_t data[7];
|
1174 |
int reg;
|
1175 |
int n;
|
1176 |
int i;
|
1177 |
|
1178 |
if (insn & (1 << 28)) { |
1179 |
addr = s->dsa + sxt24(addr); |
1180 |
} |
1181 |
n = (insn & 7);
|
1182 |
reg = (insn >> 16) & 0xff; |
1183 |
if (insn & (1 << 24)) { |
1184 |
cpu_physical_memory_read(addr, data, n); |
1185 |
DPRINTF("Load reg 0x%x size %d addr 0x%08x = %08x\n", reg, n,
|
1186 |
addr, *(int *)data);
|
1187 |
for (i = 0; i < n; i++) { |
1188 |
lsi_reg_writeb(s, reg + i, data[i]); |
1189 |
} |
1190 |
} else {
|
1191 |
DPRINTF("Store reg 0x%x size %d addr 0x%08x\n", reg, n, addr);
|
1192 |
for (i = 0; i < n; i++) { |
1193 |
data[i] = lsi_reg_readb(s, reg + i); |
1194 |
} |
1195 |
cpu_physical_memory_write(addr, data, n); |
1196 |
} |
1197 |
} |
1198 |
} |
1199 |
/* ??? Need to avoid infinite loops. */
|
1200 |
if (s->istat1 & LSI_ISTAT1_SRUN && !s->waiting) {
|
1201 |
if (s->dcntl & LSI_DCNTL_SSM) {
|
1202 |
lsi_script_dma_interrupt(s, LSI_DSTAT_SSI); |
1203 |
} else {
|
1204 |
goto again;
|
1205 |
} |
1206 |
} |
1207 |
DPRINTF("SCRIPTS execution stopped\n");
|
1208 |
} |
1209 |
|
1210 |
static uint8_t lsi_reg_readb(LSIState *s, int offset) |
1211 |
{ |
1212 |
uint8_t tmp; |
1213 |
#define CASE_GET_REG32(name, addr) \
|
1214 |
case addr: return s->name & 0xff; \ |
1215 |
case addr + 1: return (s->name >> 8) & 0xff; \ |
1216 |
case addr + 2: return (s->name >> 16) & 0xff; \ |
1217 |
case addr + 3: return (s->name >> 24) & 0xff; |
1218 |
|
1219 |
#ifdef DEBUG_LSI_REG
|
1220 |
DPRINTF("Read reg %x\n", offset);
|
1221 |
#endif
|
1222 |
switch (offset) {
|
1223 |
case 0x00: /* SCNTL0 */ |
1224 |
return s->scntl0;
|
1225 |
case 0x01: /* SCNTL1 */ |
1226 |
return s->scntl1;
|
1227 |
case 0x02: /* SCNTL2 */ |
1228 |
return s->scntl2;
|
1229 |
case 0x03: /* SCNTL3 */ |
1230 |
return s->scntl3;
|
1231 |
case 0x04: /* SCID */ |
1232 |
return s->scid;
|
1233 |
case 0x05: /* SXFER */ |
1234 |
return s->sxfer;
|
1235 |
case 0x06: /* SDID */ |
1236 |
return s->sdid;
|
1237 |
case 0x07: /* GPREG0 */ |
1238 |
return 0x7f; |
1239 |
case 0x08: /* Revision ID */ |
1240 |
return 0x00; |
1241 |
case 0xa: /* SSID */ |
1242 |
return s->ssid;
|
1243 |
case 0xb: /* SBCL */ |
1244 |
/* ??? This is not correct. However it's (hopefully) only
|
1245 |
used for diagnostics, so should be ok. */
|
1246 |
return 0; |
1247 |
case 0xc: /* DSTAT */ |
1248 |
tmp = s->dstat | 0x80;
|
1249 |
if ((s->istat0 & LSI_ISTAT0_INTF) == 0) |
1250 |
s->dstat = 0;
|
1251 |
lsi_update_irq(s); |
1252 |
return tmp;
|
1253 |
case 0x0d: /* SSTAT0 */ |
1254 |
return s->sstat0;
|
1255 |
case 0x0e: /* SSTAT1 */ |
1256 |
return s->sstat1;
|
1257 |
case 0x0f: /* SSTAT2 */ |
1258 |
return s->scntl1 & LSI_SCNTL1_CON ? 0 : 2; |
1259 |
CASE_GET_REG32(dsa, 0x10)
|
1260 |
case 0x14: /* ISTAT0 */ |
1261 |
return s->istat0;
|
1262 |
case 0x16: /* MBOX0 */ |
1263 |
return s->mbox0;
|
1264 |
case 0x17: /* MBOX1 */ |
1265 |
return s->mbox1;
|
1266 |
case 0x18: /* CTEST0 */ |
1267 |
return 0xff; |
1268 |
case 0x19: /* CTEST1 */ |
1269 |
return 0; |
1270 |
case 0x1a: /* CTEST2 */ |
1271 |
tmp = LSI_CTEST2_DACK | LSI_CTEST2_CM; |
1272 |
if (s->istat0 & LSI_ISTAT0_SIGP) {
|
1273 |
s->istat0 &= ~LSI_ISTAT0_SIGP; |
1274 |
tmp |= LSI_CTEST2_SIGP; |
1275 |
} |
1276 |
return tmp;
|
1277 |
case 0x1b: /* CTEST3 */ |
1278 |
return s->ctest3;
|
1279 |
CASE_GET_REG32(temp, 0x1c)
|
1280 |
case 0x20: /* DFIFO */ |
1281 |
return 0; |
1282 |
case 0x21: /* CTEST4 */ |
1283 |
return s->ctest4;
|
1284 |
case 0x22: /* CTEST5 */ |
1285 |
return s->ctest5;
|
1286 |
case 0x23: /* CTEST6 */ |
1287 |
return 0; |
1288 |
case 0x24: /* DBC[0:7] */ |
1289 |
return s->dbc & 0xff; |
1290 |
case 0x25: /* DBC[8:15] */ |
1291 |
return (s->dbc >> 8) & 0xff; |
1292 |
case 0x26: /* DBC[16->23] */ |
1293 |
return (s->dbc >> 16) & 0xff; |
1294 |
case 0x27: /* DCMD */ |
1295 |
return s->dcmd;
|
1296 |
CASE_GET_REG32(dsp, 0x2c)
|
1297 |
CASE_GET_REG32(dsps, 0x30)
|
1298 |
CASE_GET_REG32(scratch[0], 0x34) |
1299 |
case 0x38: /* DMODE */ |
1300 |
return s->dmode;
|
1301 |
case 0x39: /* DIEN */ |
1302 |
return s->dien;
|
1303 |
case 0x3b: /* DCNTL */ |
1304 |
return s->dcntl;
|
1305 |
case 0x40: /* SIEN0 */ |
1306 |
return s->sien0;
|
1307 |
case 0x41: /* SIEN1 */ |
1308 |
return s->sien1;
|
1309 |
case 0x42: /* SIST0 */ |
1310 |
tmp = s->sist0; |
1311 |
s->sist0 = 0;
|
1312 |
lsi_update_irq(s); |
1313 |
return tmp;
|
1314 |
case 0x43: /* SIST1 */ |
1315 |
tmp = s->sist1; |
1316 |
s->sist1 = 0;
|
1317 |
lsi_update_irq(s); |
1318 |
return tmp;
|
1319 |
case 0x47: /* GPCNTL0 */ |
1320 |
return 0x0f; |
1321 |
case 0x48: /* STIME0 */ |
1322 |
return s->stime0;
|
1323 |
case 0x4a: /* RESPID0 */ |
1324 |
return s->respid0;
|
1325 |
case 0x4b: /* RESPID1 */ |
1326 |
return s->respid1;
|
1327 |
case 0x4d: /* STEST1 */ |
1328 |
return s->stest1;
|
1329 |
case 0x4e: /* STEST2 */ |
1330 |
return s->stest2;
|
1331 |
case 0x4f: /* STEST3 */ |
1332 |
return s->stest3;
|
1333 |
case 0x50: /* SIDL */ |
1334 |
/* This is needed by the linux drivers. We currently only update it
|
1335 |
during the MSG IN phase. */
|
1336 |
return s->sidl;
|
1337 |
case 0x52: /* STEST4 */ |
1338 |
return 0xe0; |
1339 |
case 0x56: /* CCNTL0 */ |
1340 |
return s->ccntl0;
|
1341 |
case 0x57: /* CCNTL1 */ |
1342 |
return s->ccntl1;
|
1343 |
case 0x58: /* SBDL */ |
1344 |
/* Some drivers peek at the data bus during the MSG IN phase. */
|
1345 |
if ((s->sstat1 & PHASE_MASK) == PHASE_MI)
|
1346 |
return s->msg[0]; |
1347 |
return 0; |
1348 |
case 0x59: /* SBDL high */ |
1349 |
return 0; |
1350 |
CASE_GET_REG32(mmrs, 0xa0)
|
1351 |
CASE_GET_REG32(mmws, 0xa4)
|
1352 |
CASE_GET_REG32(sfs, 0xa8)
|
1353 |
CASE_GET_REG32(drs, 0xac)
|
1354 |
CASE_GET_REG32(sbms, 0xb0)
|
1355 |
CASE_GET_REG32(dmbs, 0xb4)
|
1356 |
CASE_GET_REG32(dnad64, 0xb8)
|
1357 |
CASE_GET_REG32(pmjad1, 0xc0)
|
1358 |
CASE_GET_REG32(pmjad2, 0xc4)
|
1359 |
CASE_GET_REG32(rbc, 0xc8)
|
1360 |
CASE_GET_REG32(ua, 0xcc)
|
1361 |
CASE_GET_REG32(ia, 0xd4)
|
1362 |
CASE_GET_REG32(sbc, 0xd8)
|
1363 |
CASE_GET_REG32(csbc, 0xdc)
|
1364 |
} |
1365 |
if (offset >= 0x5c && offset < 0xa0) { |
1366 |
int n;
|
1367 |
int shift;
|
1368 |
n = (offset - 0x58) >> 2; |
1369 |
shift = (offset & 3) * 8; |
1370 |
return (s->scratch[n] >> shift) & 0xff; |
1371 |
} |
1372 |
BADF("readb 0x%x\n", offset);
|
1373 |
exit(1);
|
1374 |
#undef CASE_GET_REG32
|
1375 |
} |
1376 |
|
1377 |
static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val) |
1378 |
{ |
1379 |
#define CASE_SET_REG32(name, addr) \
|
1380 |
case addr : s->name &= 0xffffff00; s->name |= val; break; \ |
1381 |
case addr + 1: s->name &= 0xffff00ff; s->name |= val << 8; break; \ |
1382 |
case addr + 2: s->name &= 0xff00ffff; s->name |= val << 16; break; \ |
1383 |
case addr + 3: s->name &= 0x00ffffff; s->name |= val << 24; break; |
1384 |
|
1385 |
#ifdef DEBUG_LSI_REG
|
1386 |
DPRINTF("Write reg %x = %02x\n", offset, val);
|
1387 |
#endif
|
1388 |
switch (offset) {
|
1389 |
case 0x00: /* SCNTL0 */ |
1390 |
s->scntl0 = val; |
1391 |
if (val & LSI_SCNTL0_START) {
|
1392 |
BADF("Start sequence not implemented\n");
|
1393 |
} |
1394 |
break;
|
1395 |
case 0x01: /* SCNTL1 */ |
1396 |
s->scntl1 = val & ~LSI_SCNTL1_SST; |
1397 |
if (val & LSI_SCNTL1_IARB) {
|
1398 |
BADF("Immediate Arbritration not implemented\n");
|
1399 |
} |
1400 |
if (val & LSI_SCNTL1_RST) {
|
1401 |
s->sstat0 |= LSI_SSTAT0_RST; |
1402 |
lsi_script_scsi_interrupt(s, LSI_SIST0_RST, 0);
|
1403 |
} else {
|
1404 |
s->sstat0 &= ~LSI_SSTAT0_RST; |
1405 |
} |
1406 |
break;
|
1407 |
case 0x02: /* SCNTL2 */ |
1408 |
val &= ~(LSI_SCNTL2_WSR | LSI_SCNTL2_WSS); |
1409 |
s->scntl2 = val; |
1410 |
break;
|
1411 |
case 0x03: /* SCNTL3 */ |
1412 |
s->scntl3 = val; |
1413 |
break;
|
1414 |
case 0x04: /* SCID */ |
1415 |
s->scid = val; |
1416 |
break;
|
1417 |
case 0x05: /* SXFER */ |
1418 |
s->sxfer = val; |
1419 |
break;
|
1420 |
case 0x06: /* SDID */ |
1421 |
if ((val & 0xf) != (s->ssid & 0xf)) |
1422 |
BADF("Destination ID does not match SSID\n");
|
1423 |
s->sdid = val & 0xf;
|
1424 |
break;
|
1425 |
case 0x07: /* GPREG0 */ |
1426 |
break;
|
1427 |
case 0x08: /* SFBR */ |
1428 |
/* The CPU is not allowed to write to this register. However the
|
1429 |
SCRIPTS register move instructions are. */
|
1430 |
s->sfbr = val; |
1431 |
break;
|
1432 |
case 0x0c: case 0x0d: case 0x0e: case 0x0f: |
1433 |
/* Linux writes to these readonly registers on startup. */
|
1434 |
return;
|
1435 |
CASE_SET_REG32(dsa, 0x10)
|
1436 |
case 0x14: /* ISTAT0 */ |
1437 |
s->istat0 = (s->istat0 & 0x0f) | (val & 0xf0); |
1438 |
if (val & LSI_ISTAT0_ABRT) {
|
1439 |
lsi_script_dma_interrupt(s, LSI_DSTAT_ABRT); |
1440 |
} |
1441 |
if (val & LSI_ISTAT0_INTF) {
|
1442 |
s->istat0 &= ~LSI_ISTAT0_INTF; |
1443 |
lsi_update_irq(s); |
1444 |
} |
1445 |
if (s->waiting == 1 && val & LSI_ISTAT0_SIGP) { |
1446 |
DPRINTF("Woken by SIGP\n");
|
1447 |
s->waiting = 0;
|
1448 |
s->dsp = s->dnad; |
1449 |
lsi_execute_script(s); |
1450 |
} |
1451 |
if (val & LSI_ISTAT0_SRST) {
|
1452 |
lsi_soft_reset(s); |
1453 |
} |
1454 |
break;
|
1455 |
case 0x16: /* MBOX0 */ |
1456 |
s->mbox0 = val; |
1457 |
break;
|
1458 |
case 0x17: /* MBOX1 */ |
1459 |
s->mbox1 = val; |
1460 |
break;
|
1461 |
case 0x1b: /* CTEST3 */ |
1462 |
s->ctest3 = val & 0x0f;
|
1463 |
break;
|
1464 |
CASE_SET_REG32(temp, 0x1c)
|
1465 |
case 0x21: /* CTEST4 */ |
1466 |
if (val & 7) { |
1467 |
BADF("Unimplemented CTEST4-FBL 0x%x\n", val);
|
1468 |
} |
1469 |
s->ctest4 = val; |
1470 |
break;
|
1471 |
case 0x22: /* CTEST5 */ |
1472 |
if (val & (LSI_CTEST5_ADCK | LSI_CTEST5_BBCK)) {
|
1473 |
BADF("CTEST5 DMA increment not implemented\n");
|
1474 |
} |
1475 |
s->ctest5 = val; |
1476 |
break;
|
1477 |
case 0x2c: /* DSP[0:7] */ |
1478 |
s->dsp &= 0xffffff00;
|
1479 |
s->dsp |= val; |
1480 |
break;
|
1481 |
case 0x2d: /* DSP[8:15] */ |
1482 |
s->dsp &= 0xffff00ff;
|
1483 |
s->dsp |= val << 8;
|
1484 |
break;
|
1485 |
case 0x2e: /* DSP[16:23] */ |
1486 |
s->dsp &= 0xff00ffff;
|
1487 |
s->dsp |= val << 16;
|
1488 |
break;
|
1489 |
case 0x2f: /* DSP[24:31] */ |
1490 |
s->dsp &= 0x00ffffff;
|
1491 |
s->dsp |= val << 24;
|
1492 |
if ((s->dmode & LSI_DMODE_MAN) == 0 |
1493 |
&& (s->istat1 & LSI_ISTAT1_SRUN) == 0)
|
1494 |
lsi_execute_script(s); |
1495 |
break;
|
1496 |
CASE_SET_REG32(dsps, 0x30)
|
1497 |
CASE_SET_REG32(scratch[0], 0x34) |
1498 |
case 0x38: /* DMODE */ |
1499 |
if (val & (LSI_DMODE_SIOM | LSI_DMODE_DIOM)) {
|
1500 |
BADF("IO mappings not implemented\n");
|
1501 |
} |
1502 |
s->dmode = val; |
1503 |
break;
|
1504 |
case 0x39: /* DIEN */ |
1505 |
s->dien = val; |
1506 |
lsi_update_irq(s); |
1507 |
break;
|
1508 |
case 0x3b: /* DCNTL */ |
1509 |
s->dcntl = val & ~(LSI_DCNTL_PFF | LSI_DCNTL_STD); |
1510 |
if ((val & LSI_DCNTL_STD) && (s->istat1 & LSI_ISTAT1_SRUN) == 0) |
1511 |
lsi_execute_script(s); |
1512 |
break;
|
1513 |
case 0x40: /* SIEN0 */ |
1514 |
s->sien0 = val; |
1515 |
lsi_update_irq(s); |
1516 |
break;
|
1517 |
case 0x41: /* SIEN1 */ |
1518 |
s->sien1 = val; |
1519 |
lsi_update_irq(s); |
1520 |
break;
|
1521 |
case 0x47: /* GPCNTL0 */ |
1522 |
break;
|
1523 |
case 0x48: /* STIME0 */ |
1524 |
s->stime0 = val; |
1525 |
break;
|
1526 |
case 0x49: /* STIME1 */ |
1527 |
if (val & 0xf) { |
1528 |
DPRINTF("General purpose timer not implemented\n");
|
1529 |
/* ??? Raising the interrupt immediately seems to be sufficient
|
1530 |
to keep the FreeBSD driver happy. */
|
1531 |
lsi_script_scsi_interrupt(s, 0, LSI_SIST1_GEN);
|
1532 |
} |
1533 |
break;
|
1534 |
case 0x4a: /* RESPID0 */ |
1535 |
s->respid0 = val; |
1536 |
break;
|
1537 |
case 0x4b: /* RESPID1 */ |
1538 |
s->respid1 = val; |
1539 |
break;
|
1540 |
case 0x4d: /* STEST1 */ |
1541 |
s->stest1 = val; |
1542 |
break;
|
1543 |
case 0x4e: /* STEST2 */ |
1544 |
if (val & 1) { |
1545 |
BADF("Low level mode not implemented\n");
|
1546 |
} |
1547 |
s->stest2 = val; |
1548 |
break;
|
1549 |
case 0x4f: /* STEST3 */ |
1550 |
if (val & 0x41) { |
1551 |
BADF("SCSI FIFO test mode not implemented\n");
|
1552 |
} |
1553 |
s->stest3 = val; |
1554 |
break;
|
1555 |
case 0x56: /* CCNTL0 */ |
1556 |
s->ccntl0 = val; |
1557 |
break;
|
1558 |
case 0x57: /* CCNTL1 */ |
1559 |
s->ccntl1 = val; |
1560 |
break;
|
1561 |
CASE_SET_REG32(mmrs, 0xa0)
|
1562 |
CASE_SET_REG32(mmws, 0xa4)
|
1563 |
CASE_SET_REG32(sfs, 0xa8)
|
1564 |
CASE_SET_REG32(drs, 0xac)
|
1565 |
CASE_SET_REG32(sbms, 0xb0)
|
1566 |
CASE_SET_REG32(dmbs, 0xb4)
|
1567 |
CASE_SET_REG32(dnad64, 0xb8)
|
1568 |
CASE_SET_REG32(pmjad1, 0xc0)
|
1569 |
CASE_SET_REG32(pmjad2, 0xc4)
|
1570 |
CASE_SET_REG32(rbc, 0xc8)
|
1571 |
CASE_SET_REG32(ua, 0xcc)
|
1572 |
CASE_SET_REG32(ia, 0xd4)
|
1573 |
CASE_SET_REG32(sbc, 0xd8)
|
1574 |
CASE_SET_REG32(csbc, 0xdc)
|
1575 |
default:
|
1576 |
if (offset >= 0x5c && offset < 0xa0) { |
1577 |
int n;
|
1578 |
int shift;
|
1579 |
n = (offset - 0x58) >> 2; |
1580 |
shift = (offset & 3) * 8; |
1581 |
s->scratch[n] &= ~(0xff << shift);
|
1582 |
s->scratch[n] |= (val & 0xff) << shift;
|
1583 |
} else {
|
1584 |
BADF("Unhandled writeb 0x%x = 0x%x\n", offset, val);
|
1585 |
} |
1586 |
} |
1587 |
#undef CASE_SET_REG32
|
1588 |
} |
1589 |
|
1590 |
static void lsi_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1591 |
{ |
1592 |
LSIState *s = (LSIState *)opaque; |
1593 |
|
1594 |
lsi_reg_writeb(s, addr & 0xff, val);
|
1595 |
} |
1596 |
|
1597 |
static void lsi_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
1598 |
{ |
1599 |
LSIState *s = (LSIState *)opaque; |
1600 |
|
1601 |
addr &= 0xff;
|
1602 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1603 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1604 |
} |
1605 |
|
1606 |
static void lsi_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
1607 |
{ |
1608 |
LSIState *s = (LSIState *)opaque; |
1609 |
|
1610 |
addr &= 0xff;
|
1611 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1612 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1613 |
lsi_reg_writeb(s, addr + 2, (val >> 16) & 0xff); |
1614 |
lsi_reg_writeb(s, addr + 3, (val >> 24) & 0xff); |
1615 |
} |
1616 |
|
1617 |
static uint32_t lsi_mmio_readb(void *opaque, target_phys_addr_t addr) |
1618 |
{ |
1619 |
LSIState *s = (LSIState *)opaque; |
1620 |
|
1621 |
return lsi_reg_readb(s, addr & 0xff); |
1622 |
} |
1623 |
|
1624 |
static uint32_t lsi_mmio_readw(void *opaque, target_phys_addr_t addr) |
1625 |
{ |
1626 |
LSIState *s = (LSIState *)opaque; |
1627 |
uint32_t val; |
1628 |
|
1629 |
addr &= 0xff;
|
1630 |
val = lsi_reg_readb(s, addr); |
1631 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1632 |
return val;
|
1633 |
} |
1634 |
|
1635 |
static uint32_t lsi_mmio_readl(void *opaque, target_phys_addr_t addr) |
1636 |
{ |
1637 |
LSIState *s = (LSIState *)opaque; |
1638 |
uint32_t val; |
1639 |
addr &= 0xff;
|
1640 |
val = lsi_reg_readb(s, addr); |
1641 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1642 |
val |= lsi_reg_readb(s, addr + 2) << 16; |
1643 |
val |= lsi_reg_readb(s, addr + 3) << 24; |
1644 |
return val;
|
1645 |
} |
1646 |
|
1647 |
static CPUReadMemoryFunc *lsi_mmio_readfn[3] = { |
1648 |
lsi_mmio_readb, |
1649 |
lsi_mmio_readw, |
1650 |
lsi_mmio_readl, |
1651 |
}; |
1652 |
|
1653 |
static CPUWriteMemoryFunc *lsi_mmio_writefn[3] = { |
1654 |
lsi_mmio_writeb, |
1655 |
lsi_mmio_writew, |
1656 |
lsi_mmio_writel, |
1657 |
}; |
1658 |
|
1659 |
static void lsi_ram_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1660 |
{ |
1661 |
LSIState *s = (LSIState *)opaque; |
1662 |
uint32_t newval; |
1663 |
int shift;
|
1664 |
|
1665 |
addr &= 0x1fff;
|
1666 |
newval = s->script_ram[addr >> 2];
|
1667 |
shift = (addr & 3) * 8; |
1668 |
newval &= ~(0xff << shift);
|
1669 |
newval |= val << shift; |
1670 |
s->script_ram[addr >> 2] = newval;
|
1671 |
} |
1672 |
|
1673 |
static void lsi_ram_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
1674 |
{ |
1675 |
LSIState *s = (LSIState *)opaque; |
1676 |
uint32_t newval; |
1677 |
|
1678 |
addr &= 0x1fff;
|
1679 |
newval = s->script_ram[addr >> 2];
|
1680 |
if (addr & 2) { |
1681 |
newval = (newval & 0xffff) | (val << 16); |
1682 |
} else {
|
1683 |
newval = (newval & 0xffff0000) | val;
|
1684 |
} |
1685 |
s->script_ram[addr >> 2] = newval;
|
1686 |
} |
1687 |
|
1688 |
|
1689 |
static void lsi_ram_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
1690 |
{ |
1691 |
LSIState *s = (LSIState *)opaque; |
1692 |
|
1693 |
addr &= 0x1fff;
|
1694 |
s->script_ram[addr >> 2] = val;
|
1695 |
} |
1696 |
|
1697 |
static uint32_t lsi_ram_readb(void *opaque, target_phys_addr_t addr) |
1698 |
{ |
1699 |
LSIState *s = (LSIState *)opaque; |
1700 |
uint32_t val; |
1701 |
|
1702 |
addr &= 0x1fff;
|
1703 |
val = s->script_ram[addr >> 2];
|
1704 |
val >>= (addr & 3) * 8; |
1705 |
return val & 0xff; |
1706 |
} |
1707 |
|
1708 |
static uint32_t lsi_ram_readw(void *opaque, target_phys_addr_t addr) |
1709 |
{ |
1710 |
LSIState *s = (LSIState *)opaque; |
1711 |
uint32_t val; |
1712 |
|
1713 |
addr &= 0x1fff;
|
1714 |
val = s->script_ram[addr >> 2];
|
1715 |
if (addr & 2) |
1716 |
val >>= 16;
|
1717 |
return le16_to_cpu(val);
|
1718 |
} |
1719 |
|
1720 |
static uint32_t lsi_ram_readl(void *opaque, target_phys_addr_t addr) |
1721 |
{ |
1722 |
LSIState *s = (LSIState *)opaque; |
1723 |
|
1724 |
addr &= 0x1fff;
|
1725 |
return le32_to_cpu(s->script_ram[addr >> 2]); |
1726 |
} |
1727 |
|
1728 |
static CPUReadMemoryFunc *lsi_ram_readfn[3] = { |
1729 |
lsi_ram_readb, |
1730 |
lsi_ram_readw, |
1731 |
lsi_ram_readl, |
1732 |
}; |
1733 |
|
1734 |
static CPUWriteMemoryFunc *lsi_ram_writefn[3] = { |
1735 |
lsi_ram_writeb, |
1736 |
lsi_ram_writew, |
1737 |
lsi_ram_writel, |
1738 |
}; |
1739 |
|
1740 |
static uint32_t lsi_io_readb(void *opaque, uint32_t addr) |
1741 |
{ |
1742 |
LSIState *s = (LSIState *)opaque; |
1743 |
return lsi_reg_readb(s, addr & 0xff); |
1744 |
} |
1745 |
|
1746 |
static uint32_t lsi_io_readw(void *opaque, uint32_t addr) |
1747 |
{ |
1748 |
LSIState *s = (LSIState *)opaque; |
1749 |
uint32_t val; |
1750 |
addr &= 0xff;
|
1751 |
val = lsi_reg_readb(s, addr); |
1752 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1753 |
return val;
|
1754 |
} |
1755 |
|
1756 |
static uint32_t lsi_io_readl(void *opaque, uint32_t addr) |
1757 |
{ |
1758 |
LSIState *s = (LSIState *)opaque; |
1759 |
uint32_t val; |
1760 |
addr &= 0xff;
|
1761 |
val = lsi_reg_readb(s, addr); |
1762 |
val |= lsi_reg_readb(s, addr + 1) << 8; |
1763 |
val |= lsi_reg_readb(s, addr + 2) << 16; |
1764 |
val |= lsi_reg_readb(s, addr + 3) << 24; |
1765 |
return val;
|
1766 |
} |
1767 |
|
1768 |
static void lsi_io_writeb(void *opaque, uint32_t addr, uint32_t val) |
1769 |
{ |
1770 |
LSIState *s = (LSIState *)opaque; |
1771 |
lsi_reg_writeb(s, addr & 0xff, val);
|
1772 |
} |
1773 |
|
1774 |
static void lsi_io_writew(void *opaque, uint32_t addr, uint32_t val) |
1775 |
{ |
1776 |
LSIState *s = (LSIState *)opaque; |
1777 |
addr &= 0xff;
|
1778 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1779 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1780 |
} |
1781 |
|
1782 |
static void lsi_io_writel(void *opaque, uint32_t addr, uint32_t val) |
1783 |
{ |
1784 |
LSIState *s = (LSIState *)opaque; |
1785 |
addr &= 0xff;
|
1786 |
lsi_reg_writeb(s, addr, val & 0xff);
|
1787 |
lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); |
1788 |
lsi_reg_writeb(s, addr + 2, (val >> 16) & 0xff); |
1789 |
lsi_reg_writeb(s, addr + 3, (val >> 24) & 0xff); |
1790 |
} |
1791 |
|
1792 |
static void lsi_io_mapfunc(PCIDevice *pci_dev, int region_num, |
1793 |
uint32_t addr, uint32_t size, int type)
|
1794 |
{ |
1795 |
LSIState *s = (LSIState *)pci_dev; |
1796 |
|
1797 |
DPRINTF("Mapping IO at %08x\n", addr);
|
1798 |
|
1799 |
register_ioport_write(addr, 256, 1, lsi_io_writeb, s); |
1800 |
register_ioport_read(addr, 256, 1, lsi_io_readb, s); |
1801 |
register_ioport_write(addr, 256, 2, lsi_io_writew, s); |
1802 |
register_ioport_read(addr, 256, 2, lsi_io_readw, s); |
1803 |
register_ioport_write(addr, 256, 4, lsi_io_writel, s); |
1804 |
register_ioport_read(addr, 256, 4, lsi_io_readl, s); |
1805 |
} |
1806 |
|
1807 |
static void lsi_ram_mapfunc(PCIDevice *pci_dev, int region_num, |
1808 |
uint32_t addr, uint32_t size, int type)
|
1809 |
{ |
1810 |
LSIState *s = (LSIState *)pci_dev; |
1811 |
|
1812 |
DPRINTF("Mapping ram at %08x\n", addr);
|
1813 |
s->script_ram_base = addr; |
1814 |
cpu_register_physical_memory(addr + 0, 0x2000, s->ram_io_addr); |
1815 |
} |
1816 |
|
1817 |
static void lsi_mmio_mapfunc(PCIDevice *pci_dev, int region_num, |
1818 |
uint32_t addr, uint32_t size, int type)
|
1819 |
{ |
1820 |
LSIState *s = (LSIState *)pci_dev; |
1821 |
|
1822 |
DPRINTF("Mapping registers at %08x\n", addr);
|
1823 |
cpu_register_physical_memory(addr + 0, 0x400, s->mmio_io_addr); |
1824 |
} |
1825 |
|
1826 |
void lsi_scsi_attach(void *opaque, BlockDriverState *bd, int id) |
1827 |
{ |
1828 |
LSIState *s = (LSIState *)opaque; |
1829 |
|
1830 |
if (id < 0) { |
1831 |
for (id = 0; id < LSI_MAX_DEVS; id++) { |
1832 |
if (s->scsi_dev[id] == NULL) |
1833 |
break;
|
1834 |
} |
1835 |
} |
1836 |
if (id >= LSI_MAX_DEVS) {
|
1837 |
BADF("Bad Device ID %d\n", id);
|
1838 |
return;
|
1839 |
} |
1840 |
if (s->scsi_dev[id]) {
|
1841 |
DPRINTF("Destroying device %d\n", id);
|
1842 |
s->scsi_dev[id]->destroy(s->scsi_dev[id]); |
1843 |
} |
1844 |
DPRINTF("Attaching block device %d\n", id);
|
1845 |
s->scsi_dev[id] = scsi_generic_init(bd, 1, lsi_command_complete, s);
|
1846 |
if (s->scsi_dev[id] == NULL) |
1847 |
s->scsi_dev[id] = scsi_disk_init(bd, 1, lsi_command_complete, s);
|
1848 |
} |
1849 |
|
1850 |
void *lsi_scsi_init(PCIBus *bus, int devfn) |
1851 |
{ |
1852 |
LSIState *s; |
1853 |
|
1854 |
s = (LSIState *)pci_register_device(bus, "LSI53C895A SCSI HBA",
|
1855 |
sizeof(*s), devfn, NULL, NULL); |
1856 |
if (s == NULL) { |
1857 |
fprintf(stderr, "lsi-scsi: Failed to register PCI device\n");
|
1858 |
return NULL; |
1859 |
} |
1860 |
|
1861 |
s->pci_dev.config[0x00] = 0x00; |
1862 |
s->pci_dev.config[0x01] = 0x10; |
1863 |
s->pci_dev.config[0x02] = 0x12; |
1864 |
s->pci_dev.config[0x03] = 0x00; |
1865 |
s->pci_dev.config[0x0b] = 0x01; |
1866 |
s->pci_dev.config[0x3d] = 0x01; /* interrupt pin 1 */ |
1867 |
|
1868 |
s->mmio_io_addr = cpu_register_io_memory(0, lsi_mmio_readfn,
|
1869 |
lsi_mmio_writefn, s); |
1870 |
s->ram_io_addr = cpu_register_io_memory(0, lsi_ram_readfn,
|
1871 |
lsi_ram_writefn, s); |
1872 |
|
1873 |
pci_register_io_region((struct PCIDevice *)s, 0, 256, |
1874 |
PCI_ADDRESS_SPACE_IO, lsi_io_mapfunc); |
1875 |
pci_register_io_region((struct PCIDevice *)s, 1, 0x400, |
1876 |
PCI_ADDRESS_SPACE_MEM, lsi_mmio_mapfunc); |
1877 |
pci_register_io_region((struct PCIDevice *)s, 2, 0x2000, |
1878 |
PCI_ADDRESS_SPACE_MEM, lsi_ram_mapfunc); |
1879 |
s->queue = qemu_malloc(sizeof(lsi_queue));
|
1880 |
s->queue_len = 1;
|
1881 |
s->active_commands = 0;
|
1882 |
|
1883 |
lsi_soft_reset(s); |
1884 |
|
1885 |
return s;
|
1886 |
} |
1887 |
|