/* * QEMU LSI53C895A SCSI Host Bus Adapter emulation * * Copyright (c) 2006 CodeSourcery. * Written by Paul Brook * * This code is licenced under the LGPL. */ /* ??? Need to check if the {read,write}[wl] routines work properly on big-endian targets. */ #include <assert.h> \ #include "hw.h" #include "pci.h" #include "scsi.h" #include "scsi-disk.h" #include "block_int.h" //#define DEBUG_LSI //#define DEBUG_LSI_REG #ifdef DEBUG_LSI #define DPRINTF(fmt, ...) \ do { printf("lsi_scsi: " fmt , ## __VA_ARGS__); } while (0) #define BADF(fmt, ...) \ do { fprintf(stderr, "lsi_scsi: error: " fmt , ## __VA_ARGS__); exit(1);} while (0) #else #define DPRINTF(fmt, ...) do {} while(0) #define BADF(fmt, ...) \ do { fprintf(stderr, "lsi_scsi: error: " fmt , ## __VA_ARGS__);} while (0) #endif #define LSI_SCNTL0_TRG 0x01 #define LSI_SCNTL0_AAP 0x02 #define LSI_SCNTL0_EPC 0x08 #define LSI_SCNTL0_WATN 0x10 #define LSI_SCNTL0_START 0x20 #define LSI_SCNTL1_SST 0x01 #define LSI_SCNTL1_IARB 0x02 #define LSI_SCNTL1_AESP 0x04 #define LSI_SCNTL1_RST 0x08 #define LSI_SCNTL1_CON 0x10 #define LSI_SCNTL1_DHP 0x20 #define LSI_SCNTL1_ADB 0x40 #define LSI_SCNTL1_EXC 0x80 #define LSI_SCNTL2_WSR 0x01 #define LSI_SCNTL2_VUE0 0x02 #define LSI_SCNTL2_VUE1 0x04 #define LSI_SCNTL2_WSS 0x08 #define LSI_SCNTL2_SLPHBEN 0x10 #define LSI_SCNTL2_SLPMD 0x20 #define LSI_SCNTL2_CHM 0x40 #define LSI_SCNTL2_SDU 0x80 #define LSI_ISTAT0_DIP 0x01 #define LSI_ISTAT0_SIP 0x02 #define LSI_ISTAT0_INTF 0x04 #define LSI_ISTAT0_CON 0x08 #define LSI_ISTAT0_SEM 0x10 #define LSI_ISTAT0_SIGP 0x20 #define LSI_ISTAT0_SRST 0x40 #define LSI_ISTAT0_ABRT 0x80 #define LSI_ISTAT1_SI 0x01 #define LSI_ISTAT1_SRUN 0x02 #define LSI_ISTAT1_FLSH 0x04 #define LSI_SSTAT0_SDP0 0x01 #define LSI_SSTAT0_RST 0x02 #define LSI_SSTAT0_WOA 0x04 #define LSI_SSTAT0_LOA 0x08 #define LSI_SSTAT0_AIP 0x10 #define LSI_SSTAT0_OLF 0x20 #define LSI_SSTAT0_ORF 0x40 #define LSI_SSTAT0_ILF 0x80 #define LSI_SIST0_PAR 0x01 #define LSI_SIST0_RST 0x02 #define LSI_SIST0_UDC 0x04 #define LSI_SIST0_SGE 0x08 #define LSI_SIST0_RSL 0x10 #define LSI_SIST0_SEL 0x20 #define LSI_SIST0_CMP 0x40 #define LSI_SIST0_MA 0x80 #define LSI_SIST1_HTH 0x01 #define LSI_SIST1_GEN 0x02 #define LSI_SIST1_STO 0x04 #define LSI_SIST1_SBMC 0x10 #define LSI_SOCL_IO 0x01 #define LSI_SOCL_CD 0x02 #define LSI_SOCL_MSG 0x04 #define LSI_SOCL_ATN 0x08 #define LSI_SOCL_SEL 0x10 #define LSI_SOCL_BSY 0x20 #define LSI_SOCL_ACK 0x40 #define LSI_SOCL_REQ 0x80 #define LSI_DSTAT_IID 0x01 #define LSI_DSTAT_SIR 0x04 #define LSI_DSTAT_SSI 0x08 #define LSI_DSTAT_ABRT 0x10 #define LSI_DSTAT_BF 0x20 #define LSI_DSTAT_MDPE 0x40 #define LSI_DSTAT_DFE 0x80 #define LSI_DCNTL_COM 0x01 #define LSI_DCNTL_IRQD 0x02 #define LSI_DCNTL_STD 0x04 #define LSI_DCNTL_IRQM 0x08 #define LSI_DCNTL_SSM 0x10 #define LSI_DCNTL_PFEN 0x20 #define LSI_DCNTL_PFF 0x40 #define LSI_DCNTL_CLSE 0x80 #define LSI_DMODE_MAN 0x01 #define LSI_DMODE_BOF 0x02 #define LSI_DMODE_ERMP 0x04 #define LSI_DMODE_ERL 0x08 #define LSI_DMODE_DIOM 0x10 #define LSI_DMODE_SIOM 0x20 #define LSI_CTEST2_DACK 0x01 #define LSI_CTEST2_DREQ 0x02 #define LSI_CTEST2_TEOP 0x04 #define LSI_CTEST2_PCICIE 0x08 #define LSI_CTEST2_CM 0x10 #define LSI_CTEST2_CIO 0x20 #define LSI_CTEST2_SIGP 0x40 #define LSI_CTEST2_DDIR 0x80 #define LSI_CTEST5_BL2 0x04 #define LSI_CTEST5_DDIR 0x08 #define LSI_CTEST5_MASR 0x10 #define LSI_CTEST5_DFSN 0x20 #define LSI_CTEST5_BBCK 0x40 #define LSI_CTEST5_ADCK 0x80 #define LSI_CCNTL0_DILS 0x01 #define LSI_CCNTL0_DISFC 0x10 #define LSI_CCNTL0_ENNDJ 0x20 #define LSI_CCNTL0_PMJCTL 0x40 #define LSI_CCNTL0_ENPMJ 0x80 #define LSI_CCNTL1_EN64DBMV 0x01 #define LSI_CCNTL1_EN64TIBMV 0x02 #define LSI_CCNTL1_64TIMOD 0x04 #define LSI_CCNTL1_DDAC 0x08 #define LSI_CCNTL1_ZMOD 0x80 #define LSI_CCNTL1_40BIT (LSI_CCNTL1_EN64TIBMV|LSI_CCNTL1_64TIMOD) #define PHASE_DO 0 #define PHASE_DI 1 #define PHASE_CMD 2 #define PHASE_ST 3 #define PHASE_MO 6 #define PHASE_MI 7 #define PHASE_MASK 7 /* Maximum length of MSG IN data. */ #define LSI_MAX_MSGIN_LEN 8 /* Flag set if this is a tagged command. */ #define LSI_TAG_VALID (1 << 16) typedef struct { uint32_t tag; uint32_t pending; int out; } lsi_queue; typedef struct { PCIDevice dev; int mmio_io_addr; int ram_io_addr; uint32_t script_ram_base; int carry; /* ??? Should this be an a visible register somewhere? */ int sense; /* Action to take at the end of a MSG IN phase. 0 = COMMAND, 1 = disconect, 2 = DATA OUT, 3 = DATA IN. */ int msg_action; int msg_len; uint8_t msg[LSI_MAX_MSGIN_LEN]; /* 0 if SCRIPTS are running or stopped. * 1 if a Wait Reselect instruction has been issued. * 2 if processing DMA from lsi_execute_script. * 3 if a DMA operation is in progress. */ int waiting; SCSIBus *bus; SCSIDevice *current_dev; int current_lun; /* The tag is a combination of the device ID and the SCSI tag. */ uint32_t current_tag; uint32_t current_dma_len; int command_complete; uint8_t *dma_buf; lsi_queue *queue; int queue_len; int active_commands; uint32_t dsa; uint32_t temp; uint32_t dnad; uint32_t dbc; uint8_t istat0; uint8_t istat1; uint8_t dcmd; uint8_t dstat; uint8_t dien; uint8_t sist0; uint8_t sist1; uint8_t sien0; uint8_t sien1; uint8_t mbox0; uint8_t mbox1; uint8_t dfifo; uint8_t ctest2; uint8_t ctest3; uint8_t ctest4; uint8_t ctest5; uint8_t ccntl0; uint8_t ccntl1; uint32_t dsp; uint32_t dsps; uint8_t dmode; uint8_t dcntl; uint8_t scntl0; uint8_t scntl1; uint8_t scntl2; uint8_t scntl3; uint8_t sstat0; uint8_t sstat1; uint8_t scid; uint8_t sxfer; uint8_t socl; uint8_t sdid; uint8_t ssid; uint8_t sfbr; uint8_t stest1; uint8_t stest2; uint8_t stest3; uint8_t sidl; uint8_t stime0; uint8_t respid0; uint8_t respid1; uint32_t mmrs; uint32_t mmws; uint32_t sfs; uint32_t drs; uint32_t sbms; uint32_t dbms; uint32_t dnad64; uint32_t pmjad1; uint32_t pmjad2; uint32_t rbc; uint32_t ua; uint32_t ia; uint32_t sbc; uint32_t csbc; uint32_t scratch[18]; /* SCRATCHA-SCRATCHR */ uint8_t sbr; /* Script ram is stored as 32-bit words in host byteorder. */ uint32_t script_ram[2048]; } LSIState; static void lsi_soft_reset(LSIState *s) { DPRINTF("Reset\n"); s->carry = 0; s->waiting = 0; s->dsa = 0; s->dnad = 0; s->dbc = 0; s->temp = 0; memset(s->scratch, 0, sizeof(s->scratch)); s->istat0 = 0; s->istat1 = 0; s->dcmd = 0; s->dstat = 0; s->dien = 0; s->sist0 = 0; s->sist1 = 0; s->sien0 = 0; s->sien1 = 0; s->mbox0 = 0; s->mbox1 = 0; s->dfifo = 0; s->ctest2 = 0; s->ctest3 = 0; s->ctest4 = 0; s->ctest5 = 0; s->ccntl0 = 0; s->ccntl1 = 0; s->dsp = 0; s->dsps = 0; s->dmode = 0; s->dcntl = 0; s->scntl0 = 0xc0; s->scntl1 = 0; s->scntl2 = 0; s->scntl3 = 0; s->sstat0 = 0; s->sstat1 = 0; s->scid = 7; s->sxfer = 0; s->socl = 0; s->stest1 = 0; s->stest2 = 0; s->stest3 = 0; s->sidl = 0; s->stime0 = 0; s->respid0 = 0x80; s->respid1 = 0; s->mmrs = 0; s->mmws = 0; s->sfs = 0; s->drs = 0; s->sbms = 0; s->dbms = 0; s->dnad64 = 0; s->pmjad1 = 0; s->pmjad2 = 0; s->rbc = 0; s->ua = 0; s->ia = 0; s->sbc = 0; s->csbc = 0; s->sbr = 0; } static int lsi_dma_40bit(LSIState *s) { if ((s->ccntl1 & LSI_CCNTL1_40BIT) == LSI_CCNTL1_40BIT) return 1; return 0; } static int lsi_dma_ti64bit(LSIState *s) { if ((s->ccntl1 & LSI_CCNTL1_EN64TIBMV) == LSI_CCNTL1_EN64TIBMV) return 1; return 0; } static int lsi_dma_64bit(LSIState *s) { if ((s->ccntl1 & LSI_CCNTL1_EN64DBMV) == LSI_CCNTL1_EN64DBMV) return 1; return 0; } static uint8_t lsi_reg_readb(LSIState *s, int offset); static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val); static void lsi_execute_script(LSIState *s); static inline uint32_t read_dword(LSIState *s, uint32_t addr) { uint32_t buf; /* Optimize reading from SCRIPTS RAM. */ if ((addr & 0xffffe000) == s->script_ram_base) { return s->script_ram[(addr & 0x1fff) >> 2]; } cpu_physical_memory_read(addr, (uint8_t *)&buf, 4); return cpu_to_le32(buf); } static void lsi_stop_script(LSIState *s) { s->istat1 &= ~LSI_ISTAT1_SRUN; } static void lsi_update_irq(LSIState *s) { int level; static int last_level; /* It's unclear whether the DIP/SIP bits should be cleared when the Interrupt Status Registers are cleared or when istat0 is read. We currently do the formwer, which seems to work. */ level = 0; if (s->dstat) { if (s->dstat & s->dien) level = 1; s->istat0 |= LSI_ISTAT0_DIP; } else { s->istat0 &= ~LSI_ISTAT0_DIP; } if (s->sist0 || s->sist1) { if ((s->sist0 & s->sien0) || (s->sist1 & s->sien1)) level = 1; s->istat0 |= LSI_ISTAT0_SIP; } else { s->istat0 &= ~LSI_ISTAT0_SIP; } if (s->istat0 & LSI_ISTAT0_INTF) level = 1; if (level != last_level) { DPRINTF("Update IRQ level %d dstat %02x sist %02x%02x\n", level, s->dstat, s->sist1, s->sist0); last_level = level; } qemu_set_irq(s->dev.irq[0], level); } /* Stop SCRIPTS execution and raise a SCSI interrupt. */ static void lsi_script_scsi_interrupt(LSIState *s, int stat0, int stat1) { uint32_t mask0; uint32_t mask1; DPRINTF("SCSI Interrupt 0x%02x%02x prev 0x%02x%02x\n", stat1, stat0, s->sist1, s->sist0); s->sist0 |= stat0; s->sist1 |= stat1; /* Stop processor on fatal or unmasked interrupt. As a special hack we don't stop processing when raising STO. Instead continue execution and stop at the next insn that accesses the SCSI bus. */ mask0 = s->sien0 | ~(LSI_SIST0_CMP | LSI_SIST0_SEL | LSI_SIST0_RSL); mask1 = s->sien1 | ~(LSI_SIST1_GEN | LSI_SIST1_HTH); mask1 &= ~LSI_SIST1_STO; if (s->sist0 & mask0 || s->sist1 & mask1) { lsi_stop_script(s); } lsi_update_irq(s); } /* Stop SCRIPTS execution and raise a DMA interrupt. */ static void lsi_script_dma_interrupt(LSIState *s, int stat) { DPRINTF("DMA Interrupt 0x%x prev 0x%x\n", stat, s->dstat); s->dstat |= stat; lsi_update_irq(s); lsi_stop_script(s); } static inline void lsi_set_phase(LSIState *s, int phase) { s->sstat1 = (s->sstat1 & ~PHASE_MASK) | phase; } static void lsi_bad_phase(LSIState *s, int out, int new_phase) { /* Trigger a phase mismatch. */ if (s->ccntl0 & LSI_CCNTL0_ENPMJ) { if ((s->ccntl0 & LSI_CCNTL0_PMJCTL) || out) { s->dsp = s->pmjad1; } else { s->dsp = s->pmjad2; } DPRINTF("Data phase mismatch jump to %08x\n", s->dsp); } else { DPRINTF("Phase mismatch interrupt\n"); lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0); lsi_stop_script(s); } lsi_set_phase(s, new_phase); } /* Resume SCRIPTS execution after a DMA operation. */ static void lsi_resume_script(LSIState *s) { if (s->waiting != 2) { s->waiting = 0; lsi_execute_script(s); } else { s->waiting = 0; } } /* Initiate a SCSI layer data transfer. */ static void lsi_do_dma(LSIState *s, int out) { uint32_t count; target_phys_addr_t addr; if (!s->current_dma_len) { /* Wait until data is available. */ DPRINTF("DMA no data available\n"); return; } count = s->dbc; if (count > s->current_dma_len) count = s->current_dma_len; addr = s->dnad; /* both 40 and Table Indirect 64-bit DMAs store upper bits in dnad64 */ if (lsi_dma_40bit(s) || lsi_dma_ti64bit(s)) addr |= ((uint64_t)s->dnad64 << 32); else if (s->dbms) addr |= ((uint64_t)s->dbms << 32); else if (s->sbms) addr |= ((uint64_t)s->sbms << 32); DPRINTF("DMA addr=0x" TARGET_FMT_plx " len=%d\n", addr, count); s->csbc += count; s->dnad += count; s->dbc -= count; if (s->dma_buf == NULL) { s->dma_buf = s->current_dev->info->get_buf(s->current_dev, s->current_tag); } /* ??? Set SFBR to first data byte. */ if (out) { cpu_physical_memory_read(addr, s->dma_buf, count); } else { cpu_physical_memory_write(addr, s->dma_buf, count); } s->current_dma_len -= count; if (s->current_dma_len == 0) { s->dma_buf = NULL; if (out) { /* Write the data. */ s->current_dev->info->write_data(s->current_dev, s->current_tag); } else { /* Request any remaining data. */ s->current_dev->info->read_data(s->current_dev, s->current_tag); } } else { s->dma_buf += count; lsi_resume_script(s); } } /* Add a command to the queue. */ static void lsi_queue_command(LSIState *s) { lsi_queue *p; DPRINTF("Queueing tag=0x%x\n", s->current_tag); if (s->queue_len == s->active_commands) { s->queue_len++; s->queue = qemu_realloc(s->queue, s->queue_len * sizeof(lsi_queue)); } p = &s->queue[s->active_commands++]; p->tag = s->current_tag; p->pending = 0; p->out = (s->sstat1 & PHASE_MASK) == PHASE_DO; } /* Queue a byte for a MSG IN phase. */ static void lsi_add_msg_byte(LSIState *s, uint8_t data) { if (s->msg_len >= LSI_MAX_MSGIN_LEN) { BADF("MSG IN data too long\n"); } else { DPRINTF("MSG IN 0x%02x\n", data); s->msg[s->msg_len++] = data; } } /* Perform reselection to continue a command. */ static void lsi_reselect(LSIState *s, uint32_t tag) { lsi_queue *p; int n; int id; p = NULL; for (n = 0; n < s->active_commands; n++) { p = &s->queue[n]; if (p->tag == tag) break; } if (n == s->active_commands) { BADF("Reselected non-existant command tag=0x%x\n", tag); return; } id = (tag >> 8) & 0xf; s->ssid = id | 0x80; DPRINTF("Reselected target %d\n", id); s->current_dev = s->bus->devs[id]; s->current_tag = tag; s->scntl1 |= LSI_SCNTL1_CON; lsi_set_phase(s, PHASE_MI); s->msg_action = p->out ? 2 : 3; s->current_dma_len = p->pending; s->dma_buf = NULL; lsi_add_msg_byte(s, 0x80); if (s->current_tag & LSI_TAG_VALID) { lsi_add_msg_byte(s, 0x20); lsi_add_msg_byte(s, tag & 0xff); } s->active_commands--; if (n != s->active_commands) { s->queue[n] = s->queue[s->active_commands]; } } /* Record that data is available for a queued command. Returns zero if the device was reselected, nonzero if the IO is deferred. */ static int lsi_queue_tag(LSIState *s, uint32_t tag, uint32_t arg) { lsi_queue *p; int i; for (i = 0; i < s->active_commands; i++) { p = &s->queue[i]; if (p->tag == tag) { if (p->pending) { BADF("Multiple IO pending for tag %d\n", tag); } p->pending = arg; if (s->waiting == 1) { /* Reselect device. */ lsi_reselect(s, tag); return 0; } else { DPRINTF("Queueing IO tag=0x%x\n", tag); p->pending = arg; return 1; } } } BADF("IO with unknown tag %d\n", tag); return 1; } /* Callback to indicate that the SCSI layer has completed a transfer. */ static void lsi_command_complete(SCSIBus *bus, int reason, uint32_t tag, uint32_t arg) { LSIState *s = DO_UPCAST(LSIState, dev.qdev, bus->qbus.parent); int out; out = (s->sstat1 & PHASE_MASK) == PHASE_DO; if (reason == SCSI_REASON_DONE) { DPRINTF("Command complete sense=%d\n", (int)arg); s->sense = arg; s->command_complete = 2; if (s->waiting && s->dbc != 0) { /* Raise phase mismatch for short transfers. */ lsi_bad_phase(s, out, PHASE_ST); } else { lsi_set_phase(s, PHASE_ST); } lsi_resume_script(s); return; } if (s->waiting == 1 || tag != s->current_tag) { if (lsi_queue_tag(s, tag, arg)) return; } DPRINTF("Data ready tag=0x%x len=%d\n", tag, arg); s->current_dma_len = arg; s->command_complete = 1; if (!s->waiting) return; if (s->waiting == 1 || s->dbc == 0) { lsi_resume_script(s); } else { lsi_do_dma(s, out); } } static void lsi_do_command(LSIState *s) { uint8_t buf[16]; int n; DPRINTF("Send command len=%d\n", s->dbc); if (s->dbc > 16) s->dbc = 16; cpu_physical_memory_read(s->dnad, buf, s->dbc); s->sfbr = buf[0]; s->command_complete = 0; n = s->current_dev->info->send_command(s->current_dev, s->current_tag, buf, s->current_lun); if (n > 0) { lsi_set_phase(s, PHASE_DI); s->current_dev->info->read_data(s->current_dev, s->current_tag); } else if (n < 0) { lsi_set_phase(s, PHASE_DO); s->current_dev->info->write_data(s->current_dev, s->current_tag); } if (!s->command_complete) { if (n) { /* Command did not complete immediately so disconnect. */ lsi_add_msg_byte(s, 2); /* SAVE DATA POINTER */ lsi_add_msg_byte(s, 4); /* DISCONNECT */ /* wait data */ lsi_set_phase(s, PHASE_MI); s->msg_action = 1; lsi_queue_command(s); } else { /* wait command complete */ lsi_set_phase(s, PHASE_DI); } } } static void lsi_do_status(LSIState *s) { uint8_t sense; DPRINTF("Get status len=%d sense=%d\n", s->dbc, s->sense); if (s->dbc != 1) BADF("Bad Status move\n"); s->dbc = 1; sense = s->sense; s->sfbr = sense; cpu_physical_memory_write(s->dnad, &sense, 1); lsi_set_phase(s, PHASE_MI); s->msg_action = 1; lsi_add_msg_byte(s, 0); /* COMMAND COMPLETE */ } static void lsi_disconnect(LSIState *s) { s->scntl1 &= ~LSI_SCNTL1_CON; s->sstat1 &= ~PHASE_MASK; } static void lsi_do_msgin(LSIState *s) { int len; DPRINTF("Message in len=%d/%d\n", s->dbc, s->msg_len); s->sfbr = s->msg[0]; len = s->msg_len; if (len > s->dbc) len = s->dbc; cpu_physical_memory_write(s->dnad, s->msg, len); /* Linux drivers rely on the last byte being in the SIDL. */ s->sidl = s->msg[len - 1]; s->msg_len -= len; if (s->msg_len) { memmove(s->msg, s->msg + len, s->msg_len); } else { /* ??? Check if ATN (not yet implemented) is asserted and maybe switch to PHASE_MO. */ switch (s->msg_action) { case 0: lsi_set_phase(s, PHASE_CMD); break; case 1: lsi_disconnect(s); break; case 2: lsi_set_phase(s, PHASE_DO); break; case 3: lsi_set_phase(s, PHASE_DI); break; default: abort(); } } } /* Read the next byte during a MSGOUT phase. */ static uint8_t lsi_get_msgbyte(LSIState *s) { uint8_t data; cpu_physical_memory_read(s->dnad, &data, 1); s->dnad++; s->dbc--; return data; } static void lsi_do_msgout(LSIState *s) { uint8_t msg; int len; DPRINTF("MSG out len=%d\n", s->dbc); while (s->dbc) { msg = lsi_get_msgbyte(s); s->sfbr = msg; switch (msg) { case 0x00: DPRINTF("MSG: Disconnect\n"); lsi_disconnect(s); break; case 0x08: DPRINTF("MSG: No Operation\n"); lsi_set_phase(s, PHASE_CMD); break; case 0x01: len = lsi_get_msgbyte(s); msg = lsi_get_msgbyte(s); DPRINTF("Extended message 0x%x (len %d)\n", msg, len); switch (msg) { case 1: DPRINTF("SDTR (ignored)\n"); s->dbc -= 2; break; case 3: DPRINTF("WDTR (ignored)\n"); s->dbc -= 1; break; default: goto bad; } break; case 0x20: /* SIMPLE queue */ s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; DPRINTF("SIMPLE queue tag=0x%x\n", s->current_tag & 0xff); break; case 0x21: /* HEAD of queue */ BADF("HEAD queue not implemented\n"); s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; break; case 0x22: /* ORDERED queue */ BADF("ORDERED queue not implemented\n"); s->current_tag |= lsi_get_msgbyte(s) | LSI_TAG_VALID; break; default: if ((msg & 0x80) == 0) { goto bad; } s->current_lun = msg & 7; DPRINTF("Select LUN %d\n", s->current_lun); lsi_set_phase(s, PHASE_CMD); break; } } return; bad: BADF("Unimplemented message 0x%02x\n", msg); lsi_set_phase(s, PHASE_MI); lsi_add_msg_byte(s, 7); /* MESSAGE REJECT */ s->msg_action = 0; } /* Sign extend a 24-bit value. */ static inline int32_t sxt24(int32_t n) { return (n << 8) >> 8; } #define LSI_BUF_SIZE 4096 static void lsi_memcpy(LSIState *s, uint32_t dest, uint32_t src, int count) { int n; uint8_t buf[LSI_BUF_SIZE]; DPRINTF("memcpy dest 0x%08x src 0x%08x count %d\n", dest, src, count); while (count) { n = (count > LSI_BUF_SIZE) ? LSI_BUF_SIZE : count; cpu_physical_memory_read(src, buf, n); cpu_physical_memory_write(dest, buf, n); src += n; dest += n; count -= n; } } static void lsi_wait_reselect(LSIState *s) { int i; DPRINTF("Wait Reselect\n"); if (s->current_dma_len) BADF("Reselect with pending DMA\n"); for (i = 0; i < s->active_commands; i++) { if (s->queue[i].pending) { lsi_reselect(s, s->queue[i].tag); break; } } if (s->current_dma_len == 0) { s->waiting = 1; } } static void lsi_execute_script(LSIState *s) { uint32_t insn; uint32_t addr, addr_high; int opcode; int insn_processed = 0; s->istat1 |= LSI_ISTAT1_SRUN; again: insn_processed++; insn = read_dword(s, s->dsp); if (!insn) { /* If we receive an empty opcode increment the DSP by 4 bytes instead of 8 and execute the next opcode at that location */ s->dsp += 4; goto again; } addr = read_dword(s, s->dsp + 4); addr_high = 0; DPRINTF("SCRIPTS dsp=%08x opcode %08x arg %08x\n", s->dsp, insn, addr); s->dsps = addr; s->dcmd = insn >> 24; s->dsp += 8; switch (insn >> 30) { case 0: /* Block move. */ if (s->sist1 & LSI_SIST1_STO) { DPRINTF("Delayed select timeout\n"); lsi_stop_script(s); break; } s->dbc = insn & 0xffffff; s->rbc = s->dbc; /* ??? Set ESA. */ s->ia = s->dsp - 8; if (insn & (1 << 29)) { /* Indirect addressing. */ addr = read_dword(s, addr); } else if (insn & (1 << 28)) { uint32_t buf[2]; int32_t offset; /* Table indirect addressing. */ /* 32-bit Table indirect */ offset = sxt24(addr); cpu_physical_memory_read(s->dsa + offset, (uint8_t *)buf, 8); /* byte count is stored in bits 0:23 only */ s->dbc = cpu_to_le32(buf[0]) & 0xffffff; s->rbc = s->dbc; addr = cpu_to_le32(buf[1]); /* 40-bit DMA, upper addr bits [39:32] stored in first DWORD of * table, bits [31:24] */ if (lsi_dma_40bit(s)) addr_high = cpu_to_le32(buf[0]) >> 24; else if (lsi_dma_ti64bit(s)) { int selector = (cpu_to_le32(buf[0]) >> 24) & 0x1f; switch (selector) { case 0 ... 0x0f: /* offset index into scratch registers since * TI64 mode can use registers C to R */ addr_high = s->scratch[2 + selector]; break; case 0x10: addr_high = s->mmrs; break; case 0x11: addr_high = s->mmws; break; case 0x12: addr_high = s->sfs; break; case 0x13: addr_high = s->drs; break; case 0x14: addr_high = s->sbms; break; case 0x15: addr_high = s->dbms; break; default: BADF("Illegal selector specified (0x%x > 0x15)" " for 64-bit DMA block move", selector); break; } } } else if (lsi_dma_64bit(s)) { /* fetch a 3rd dword if 64-bit direct move is enabled and only if we're not doing table indirect or indirect addressing */ s->dbms = read_dword(s, s->dsp); s->dsp += 4; s->ia = s->dsp - 12; } if ((s->sstat1 & PHASE_MASK) != ((insn >> 24) & 7)) { DPRINTF("Wrong phase got %d expected %d\n", s->sstat1 & PHASE_MASK, (insn >> 24) & 7); lsi_script_scsi_interrupt(s, LSI_SIST0_MA, 0); break; } s->dnad = addr; s->dnad64 = addr_high; switch (s->sstat1 & 0x7) { case PHASE_DO: s->waiting = 2; lsi_do_dma(s, 1); if (s->waiting) s->waiting = 3; break; case PHASE_DI: s->waiting = 2; lsi_do_dma(s, 0); if (s->waiting) s->waiting = 3; break; case PHASE_CMD: lsi_do_command(s); break; case PHASE_ST: lsi_do_status(s); break; case PHASE_MO: lsi_do_msgout(s); break; case PHASE_MI: lsi_do_msgin(s); break; default: BADF("Unimplemented phase %d\n", s->sstat1 & PHASE_MASK); exit(1); } s->dfifo = s->dbc & 0xff; s->ctest5 = (s->ctest5 & 0xfc) | ((s->dbc >> 8) & 3); s->sbc = s->dbc; s->rbc -= s->dbc; s->ua = addr + s->dbc; break; case 1: /* IO or Read/Write instruction. */ opcode = (insn >> 27) & 7; if (opcode < 5) { uint32_t id; if (insn & (1 << 25)) { id = read_dword(s, s->dsa + sxt24(insn)); } else { id = addr; } id = (id >> 16) & 0xf; if (insn & (1 << 26)) { addr = s->dsp + sxt24(addr); } s->dnad = addr; switch (opcode) { case 0: /* Select */ s->sdid = id; if (s->current_dma_len && (s->ssid & 0xf) == id) { DPRINTF("Already reselected by target %d\n", id); break; } s->sstat0 |= LSI_SSTAT0_WOA; s->scntl1 &= ~LSI_SCNTL1_IARB; if (id >= LSI_MAX_DEVS || !s->bus->devs[id]) { DPRINTF("Selected absent target %d\n", id); lsi_script_scsi_interrupt(s, 0, LSI_SIST1_STO); lsi_disconnect(s); break; } DPRINTF("Selected target %d%s\n", id, insn & (1 << 3) ? " ATN" : ""); /* ??? Linux drivers compain when this is set. Maybe it only applies in low-level mode (unimplemented). lsi_script_scsi_interrupt(s, LSI_SIST0_CMP, 0); */ s->current_dev = s->bus->devs[id]; s->current_tag = id << 8; s->scntl1 |= LSI_SCNTL1_CON; if (insn & (1 << 3)) { s->socl |= LSI_SOCL_ATN; } lsi_set_phase(s, PHASE_MO); break; case 1: /* Disconnect */ DPRINTF("Wait Disconect\n"); s->scntl1 &= ~LSI_SCNTL1_CON; break; case 2: /* Wait Reselect */ lsi_wait_reselect(s); break; case 3: /* Set */ DPRINTF("Set%s%s%s%s\n", insn & (1 << 3) ? " ATN" : "", insn & (1 << 6) ? " ACK" : "", insn & (1 << 9) ? " TM" : "", insn & (1 << 10) ? " CC" : ""); if (insn & (1 << 3)) { s->socl |= LSI_SOCL_ATN; lsi_set_phase(s, PHASE_MO); } if (insn & (1 << 9)) { BADF("Target mode not implemented\n"); exit(1); } if (insn & (1 << 10)) s->carry = 1; break; case 4: /* Clear */ DPRINTF("Clear%s%s%s%s\n", insn & (1 << 3) ? " ATN" : "", insn & (1 << 6) ? " ACK" : "", insn & (1 << 9) ? " TM" : "", insn & (1 << 10) ? " CC" : ""); if (insn & (1 << 3)) { s->socl &= ~LSI_SOCL_ATN; } if (insn & (1 << 10)) s->carry = 0; break; } } else { uint8_t op0; uint8_t op1; uint8_t data8; int reg; int operator; #ifdef DEBUG_LSI static const char *opcode_names[3] = {"Write", "Read", "Read-Modify-Write"}; static const char *operator_names[8] = {"MOV", "SHL", "OR", "XOR", "AND", "SHR", "ADD", "ADC"}; #endif reg = ((insn >> 16) & 0x7f) | (insn & 0x80); data8 = (insn >> 8) & 0xff; opcode = (insn >> 27) & 7; operator = (insn >> 24) & 7; DPRINTF("%s reg 0x%x %s data8=0x%02x sfbr=0x%02x%s\n", opcode_names[opcode - 5], reg, operator_names[operator], data8, s->sfbr, (insn & (1 << 23)) ? " SFBR" : ""); op0 = op1 = 0; switch (opcode) { case 5: /* From SFBR */ op0 = s->sfbr; op1 = data8; break; case 6: /* To SFBR */ if (operator) op0 = lsi_reg_readb(s, reg); op1 = data8; break; case 7: /* Read-modify-write */ if (operator) op0 = lsi_reg_readb(s, reg); if (insn & (1 << 23)) { op1 = s->sfbr; } else { op1 = data8; } break; } switch (operator) { case 0: /* move */ op0 = op1; break; case 1: /* Shift left */ op1 = op0 >> 7; op0 = (op0 << 1) | s->carry; s->carry = op1; break; case 2: /* OR */ op0 |= op1; break; case 3: /* XOR */ op0 ^= op1; break; case 4: /* AND */ op0 &= op1; break; case 5: /* SHR */ op1 = op0 & 1; op0 = (op0 >> 1) | (s->carry << 7); s->carry = op1; break; case 6: /* ADD */ op0 += op1; s->carry = op0 < op1; break; case 7: /* ADC */ op0 += op1 + s->carry; if (s->carry) s->carry = op0 <= op1; else s->carry = op0 < op1; break; } switch (opcode) { case 5: /* From SFBR */ case 7: /* Read-modify-write */ lsi_reg_writeb(s, reg, op0); break; case 6: /* To SFBR */ s->sfbr = op0; break; } } break; case 2: /* Transfer Control. */ { int cond; int jmp; if ((insn & 0x002e0000) == 0) { DPRINTF("NOP\n"); break; } if (s->sist1 & LSI_SIST1_STO) { DPRINTF("Delayed select timeout\n"); lsi_stop_script(s); break; } cond = jmp = (insn & (1 << 19)) != 0; if (cond == jmp && (insn & (1 << 21))) { DPRINTF("Compare carry %d\n", s->carry == jmp); cond = s->carry != 0; } if (cond == jmp && (insn & (1 << 17))) { DPRINTF("Compare phase %d %c= %d\n", (s->sstat1 & PHASE_MASK), jmp ? '=' : '!', ((insn >> 24) & 7)); cond = (s->sstat1 & PHASE_MASK) == ((insn >> 24) & 7); } if (cond == jmp && (insn & (1 << 18))) { uint8_t mask; mask = (~insn >> 8) & 0xff; DPRINTF("Compare data 0x%x & 0x%x %c= 0x%x\n", s->sfbr, mask, jmp ? '=' : '!', insn & mask); cond = (s->sfbr & mask) == (insn & mask); } if (cond == jmp) { if (insn & (1 << 23)) { /* Relative address. */ addr = s->dsp + sxt24(addr); } switch ((insn >> 27) & 7) { case 0: /* Jump */ DPRINTF("Jump to 0x%08x\n", addr); s->dsp = addr; break; case 1: /* Call */ DPRINTF("Call 0x%08x\n", addr); s->temp = s->dsp; s->dsp = addr; break; case 2: /* Return */ DPRINTF("Return to 0x%08x\n", s->temp); s->dsp = s->temp; break; case 3: /* Interrupt */ DPRINTF("Interrupt 0x%08x\n", s->dsps); if ((insn & (1 << 20)) != 0) { s->istat0 |= LSI_ISTAT0_INTF; lsi_update_irq(s); } else { lsi_script_dma_interrupt(s, LSI_DSTAT_SIR); } break; default: DPRINTF("Illegal transfer control\n"); lsi_script_dma_interrupt(s, LSI_DSTAT_IID); break; } } else { DPRINTF("Control condition failed\n"); } } break; case 3: if ((insn & (1 << 29)) == 0) { /* Memory move. */ uint32_t dest; /* ??? The docs imply the destination address is loaded into the TEMP register. However the Linux drivers rely on the value being presrved. */ dest = read_dword(s, s->dsp); s->dsp += 4; lsi_memcpy(s, dest, addr, insn & 0xffffff); } else { uint8_t data[7]; int reg; int n; int i; if (insn & (1 << 28)) { addr = s->dsa + sxt24(addr); } n = (insn & 7); reg = (insn >> 16) & 0xff; if (insn & (1 << 24)) { cpu_physical_memory_read(addr, data, n); DPRINTF("Load reg 0x%x size %d addr 0x%08x = %08x\n", reg, n, addr, *(int *)data); for (i = 0; i < n; i++) { lsi_reg_writeb(s, reg + i, data[i]); } } else { DPRINTF("Store reg 0x%x size %d addr 0x%08x\n", reg, n, addr); for (i = 0; i < n; i++) { data[i] = lsi_reg_readb(s, reg + i); } cpu_physical_memory_write(addr, data, n); } } } if (insn_processed > 10000 && !s->waiting) { /* Some windows drivers make the device spin waiting for a memory location to change. If we have been executed a lot of code then assume this is the case and force an unexpected device disconnect. This is apparently sufficient to beat the drivers into submission. */ if (!(s->sien0 & LSI_SIST0_UDC)) fprintf(stderr, "inf. loop with UDC masked\n"); lsi_script_scsi_interrupt(s, LSI_SIST0_UDC, 0); lsi_disconnect(s); } else if (s->istat1 & LSI_ISTAT1_SRUN && !s->waiting) { if (s->dcntl & LSI_DCNTL_SSM) { lsi_script_dma_interrupt(s, LSI_DSTAT_SSI); } else { goto again; } } DPRINTF("SCRIPTS execution stopped\n"); } static uint8_t lsi_reg_readb(LSIState *s, int offset) { uint8_t tmp; #define CASE_GET_REG24(name, addr) \ case addr: return s->name & 0xff; \ case addr + 1: return (s->name >> 8) & 0xff; \ case addr + 2: return (s->name >> 16) & 0xff; #define CASE_GET_REG32(name, addr) \ case addr: return s->name & 0xff; \ case addr + 1: return (s->name >> 8) & 0xff; \ case addr + 2: return (s->name >> 16) & 0xff; \ case addr + 3: return (s->name >> 24) & 0xff; #ifdef DEBUG_LSI_REG DPRINTF("Read reg %x\n", offset); #endif switch (offset) { case 0x00: /* SCNTL0 */ return s->scntl0; case 0x01: /* SCNTL1 */ return s->scntl1; case 0x02: /* SCNTL2 */ return s->scntl2; case 0x03: /* SCNTL3 */ return s->scntl3; case 0x04: /* SCID */ return s->scid; case 0x05: /* SXFER */ return s->sxfer; case 0x06: /* SDID */ return s->sdid; case 0x07: /* GPREG0 */ return 0x7f; case 0x08: /* Revision ID */ return 0x00; case 0xa: /* SSID */ return s->ssid; case 0xb: /* SBCL */ /* ??? This is not correct. However it's (hopefully) only used for diagnostics, so should be ok. */ return 0; case 0xc: /* DSTAT */ tmp = s->dstat | 0x80; if ((s->istat0 & LSI_ISTAT0_INTF) == 0) s->dstat = 0; lsi_update_irq(s); return tmp; case 0x0d: /* SSTAT0 */ return s->sstat0; case 0x0e: /* SSTAT1 */ return s->sstat1; case 0x0f: /* SSTAT2 */ return s->scntl1 & LSI_SCNTL1_CON ? 0 : 2; CASE_GET_REG32(dsa, 0x10) case 0x14: /* ISTAT0 */ return s->istat0; case 0x15: /* ISTAT1 */ return s->istat1; case 0x16: /* MBOX0 */ return s->mbox0; case 0x17: /* MBOX1 */ return s->mbox1; case 0x18: /* CTEST0 */ return 0xff; case 0x19: /* CTEST1 */ return 0; case 0x1a: /* CTEST2 */ tmp = s->ctest2 | LSI_CTEST2_DACK | LSI_CTEST2_CM; if (s->istat0 & LSI_ISTAT0_SIGP) { s->istat0 &= ~LSI_ISTAT0_SIGP; tmp |= LSI_CTEST2_SIGP; } return tmp; case 0x1b: /* CTEST3 */ return s->ctest3; CASE_GET_REG32(temp, 0x1c) case 0x20: /* DFIFO */ return 0; case 0x21: /* CTEST4 */ return s->ctest4; case 0x22: /* CTEST5 */ return s->ctest5; case 0x23: /* CTEST6 */ return 0; CASE_GET_REG24(dbc, 0x24) case 0x27: /* DCMD */ return s->dcmd; CASE_GET_REG32(dnad, 0x28) CASE_GET_REG32(dsp, 0x2c) CASE_GET_REG32(dsps, 0x30) CASE_GET_REG32(scratch[0], 0x34) case 0x38: /* DMODE */ return s->dmode; case 0x39: /* DIEN */ return s->dien; case 0x3a: /* SBR */ return s->sbr; case 0x3b: /* DCNTL */ return s->dcntl; case 0x40: /* SIEN0 */ return s->sien0; case 0x41: /* SIEN1 */ return s->sien1; case 0x42: /* SIST0 */ tmp = s->sist0; s->sist0 = 0; lsi_update_irq(s); return tmp; case 0x43: /* SIST1 */ tmp = s->sist1; s->sist1 = 0; lsi_update_irq(s); return tmp; case 0x46: /* MACNTL */ return 0x0f; case 0x47: /* GPCNTL0 */ return 0x0f; case 0x48: /* STIME0 */ return s->stime0; case 0x4a: /* RESPID0 */ return s->respid0; case 0x4b: /* RESPID1 */ return s->respid1; case 0x4d: /* STEST1 */ return s->stest1; case 0x4e: /* STEST2 */ return s->stest2; case 0x4f: /* STEST3 */ return s->stest3; case 0x50: /* SIDL */ /* This is needed by the linux drivers. We currently only update it during the MSG IN phase. */ return s->sidl; case 0x52: /* STEST4 */ return 0xe0; case 0x56: /* CCNTL0 */ return s->ccntl0; case 0x57: /* CCNTL1 */ return s->ccntl1; case 0x58: /* SBDL */ /* Some drivers peek at the data bus during the MSG IN phase. */ if ((s->sstat1 & PHASE_MASK) == PHASE_MI) return s->msg[0]; return 0; case 0x59: /* SBDL high */ return 0; CASE_GET_REG32(mmrs, 0xa0) CASE_GET_REG32(mmws, 0xa4) CASE_GET_REG32(sfs, 0xa8) CASE_GET_REG32(drs, 0xac) CASE_GET_REG32(sbms, 0xb0) CASE_GET_REG32(dbms, 0xb4) CASE_GET_REG32(dnad64, 0xb8) CASE_GET_REG32(pmjad1, 0xc0) CASE_GET_REG32(pmjad2, 0xc4) CASE_GET_REG32(rbc, 0xc8) CASE_GET_REG32(ua, 0xcc) CASE_GET_REG32(ia, 0xd4) CASE_GET_REG32(sbc, 0xd8) CASE_GET_REG32(csbc, 0xdc) } if (offset >= 0x5c && offset < 0xa0) { int n; int shift; n = (offset - 0x58) >> 2; shift = (offset & 3) * 8; return (s->scratch[n] >> shift) & 0xff; } BADF("readb 0x%x\n", offset); exit(1); #undef CASE_GET_REG24 #undef CASE_GET_REG32 } static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val) { #define CASE_SET_REG24(name, addr) \ case addr : s->name &= 0xffffff00; s->name |= val; break; \ case addr + 1: s->name &= 0xffff00ff; s->name |= val << 8; break; \ case addr + 2: s->name &= 0xff00ffff; s->name |= val << 16; break; #define CASE_SET_REG32(name, addr) \ case addr : s->name &= 0xffffff00; s->name |= val; break; \ case addr + 1: s->name &= 0xffff00ff; s->name |= val << 8; break; \ case addr + 2: s->name &= 0xff00ffff; s->name |= val << 16; break; \ case addr + 3: s->name &= 0x00ffffff; s->name |= val << 24; break; #ifdef DEBUG_LSI_REG DPRINTF("Write reg %x = %02x\n", offset, val); #endif switch (offset) { case 0x00: /* SCNTL0 */ s->scntl0 = val; if (val & LSI_SCNTL0_START) { BADF("Start sequence not implemented\n"); } break; case 0x01: /* SCNTL1 */ s->scntl1 = val & ~LSI_SCNTL1_SST; if (val & LSI_SCNTL1_IARB) { BADF("Immediate Arbritration not implemented\n"); } if (val & LSI_SCNTL1_RST) { s->sstat0 |= LSI_SSTAT0_RST; lsi_script_scsi_interrupt(s, LSI_SIST0_RST, 0); } else { s->sstat0 &= ~LSI_SSTAT0_RST; } break; case 0x02: /* SCNTL2 */ val &= ~(LSI_SCNTL2_WSR | LSI_SCNTL2_WSS); s->scntl2 = val; break; case 0x03: /* SCNTL3 */ s->scntl3 = val; break; case 0x04: /* SCID */ s->scid = val; break; case 0x05: /* SXFER */ s->sxfer = val; break; case 0x06: /* SDID */ if ((val & 0xf) != (s->ssid & 0xf)) BADF("Destination ID does not match SSID\n"); s->sdid = val & 0xf; break; case 0x07: /* GPREG0 */ break; case 0x08: /* SFBR */ /* The CPU is not allowed to write to this register. However the SCRIPTS register move instructions are. */ s->sfbr = val; break; case 0x0a: case 0x0b: /* Openserver writes to these readonly registers on startup */ return; case 0x0c: case 0x0d: case 0x0e: case 0x0f: /* Linux writes to these readonly registers on startup. */ return; CASE_SET_REG32(dsa, 0x10) case 0x14: /* ISTAT0 */ s->istat0 = (s->istat0 & 0x0f) | (val & 0xf0); if (val & LSI_ISTAT0_ABRT) { lsi_script_dma_interrupt(s, LSI_DSTAT_ABRT); } if (val & LSI_ISTAT0_INTF) { s->istat0 &= ~LSI_ISTAT0_INTF; lsi_update_irq(s); } if (s->waiting == 1 && val & LSI_ISTAT0_SIGP) { DPRINTF("Woken by SIGP\n"); s->waiting = 0; s->dsp = s->dnad; lsi_execute_script(s); } if (val & LSI_ISTAT0_SRST) { lsi_soft_reset(s); } break; case 0x16: /* MBOX0 */ s->mbox0 = val; break; case 0x17: /* MBOX1 */ s->mbox1 = val; break; case 0x1a: /* CTEST2 */ s->ctest2 = val & LSI_CTEST2_PCICIE; break; case 0x1b: /* CTEST3 */ s->ctest3 = val & 0x0f; break; CASE_SET_REG32(temp, 0x1c) case 0x21: /* CTEST4 */ if (val & 7) { BADF("Unimplemented CTEST4-FBL 0x%x\n", val); } s->ctest4 = val; break; case 0x22: /* CTEST5 */ if (val & (LSI_CTEST5_ADCK | LSI_CTEST5_BBCK)) { BADF("CTEST5 DMA increment not implemented\n"); } s->ctest5 = val; break; CASE_SET_REG24(dbc, 0x24) CASE_SET_REG32(dnad, 0x28) case 0x2c: /* DSP[0:7] */ s->dsp &= 0xffffff00; s->dsp |= val; break; case 0x2d: /* DSP[8:15] */ s->dsp &= 0xffff00ff; s->dsp |= val << 8; break; case 0x2e: /* DSP[16:23] */ s->dsp &= 0xff00ffff; s->dsp |= val << 16; break; case 0x2f: /* DSP[24:31] */ s->dsp &= 0x00ffffff; s->dsp |= val << 24; if ((s->dmode & LSI_DMODE_MAN) == 0 && (s->istat1 & LSI_ISTAT1_SRUN) == 0) lsi_execute_script(s); break; CASE_SET_REG32(dsps, 0x30) CASE_SET_REG32(scratch[0], 0x34) case 0x38: /* DMODE */ if (val & (LSI_DMODE_SIOM | LSI_DMODE_DIOM)) { BADF("IO mappings not implemented\n"); } s->dmode = val; break; case 0x39: /* DIEN */ s->dien = val; lsi_update_irq(s); break; case 0x3a: /* SBR */ s->sbr = val; break; case 0x3b: /* DCNTL */ s->dcntl = val & ~(LSI_DCNTL_PFF | LSI_DCNTL_STD); if ((val & LSI_DCNTL_STD) && (s->istat1 & LSI_ISTAT1_SRUN) == 0) lsi_execute_script(s); break; case 0x40: /* SIEN0 */ s->sien0 = val; lsi_update_irq(s); break; case 0x41: /* SIEN1 */ s->sien1 = val; lsi_update_irq(s); break; case 0x47: /* GPCNTL0 */ break; case 0x48: /* STIME0 */ s->stime0 = val; break; case 0x49: /* STIME1 */ if (val & 0xf) { DPRINTF("General purpose timer not implemented\n"); /* ??? Raising the interrupt immediately seems to be sufficient to keep the FreeBSD driver happy. */ lsi_script_scsi_interrupt(s, 0, LSI_SIST1_GEN); } break; case 0x4a: /* RESPID0 */ s->respid0 = val; break; case 0x4b: /* RESPID1 */ s->respid1 = val; break; case 0x4d: /* STEST1 */ s->stest1 = val; break; case 0x4e: /* STEST2 */ if (val & 1) { BADF("Low level mode not implemented\n"); } s->stest2 = val; break; case 0x4f: /* STEST3 */ if (val & 0x41) { BADF("SCSI FIFO test mode not implemented\n"); } s->stest3 = val; break; case 0x56: /* CCNTL0 */ s->ccntl0 = val; break; case 0x57: /* CCNTL1 */ s->ccntl1 = val; break; CASE_SET_REG32(mmrs, 0xa0) CASE_SET_REG32(mmws, 0xa4) CASE_SET_REG32(sfs, 0xa8) CASE_SET_REG32(drs, 0xac) CASE_SET_REG32(sbms, 0xb0) CASE_SET_REG32(dbms, 0xb4) CASE_SET_REG32(dnad64, 0xb8) CASE_SET_REG32(pmjad1, 0xc0) CASE_SET_REG32(pmjad2, 0xc4) CASE_SET_REG32(rbc, 0xc8) CASE_SET_REG32(ua, 0xcc) CASE_SET_REG32(ia, 0xd4) CASE_SET_REG32(sbc, 0xd8) CASE_SET_REG32(csbc, 0xdc) default: if (offset >= 0x5c && offset < 0xa0) { int n; int shift; n = (offset - 0x58) >> 2; shift = (offset & 3) * 8; s->scratch[n] &= ~(0xff << shift); s->scratch[n] |= (val & 0xff) << shift; } else { BADF("Unhandled writeb 0x%x = 0x%x\n", offset, val); } } #undef CASE_SET_REG24 #undef CASE_SET_REG32 } static void lsi_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) { LSIState *s = opaque; lsi_reg_writeb(s, addr & 0xff, val); } static void lsi_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val) { LSIState *s = opaque; addr &= 0xff; lsi_reg_writeb(s, addr, val & 0xff); lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); } static void lsi_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val) { LSIState *s = opaque; addr &= 0xff; lsi_reg_writeb(s, addr, val & 0xff); lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); lsi_reg_writeb(s, addr + 2, (val >> 16) & 0xff); lsi_reg_writeb(s, addr + 3, (val >> 24) & 0xff); } static uint32_t lsi_mmio_readb(void *opaque, target_phys_addr_t addr) { LSIState *s = opaque; return lsi_reg_readb(s, addr & 0xff); } static uint32_t lsi_mmio_readw(void *opaque, target_phys_addr_t addr) { LSIState *s = opaque; uint32_t val; addr &= 0xff; val = lsi_reg_readb(s, addr); val |= lsi_reg_readb(s, addr + 1) << 8; return val; } static uint32_t lsi_mmio_readl(void *opaque, target_phys_addr_t addr) { LSIState *s = opaque; uint32_t val; addr &= 0xff; val = lsi_reg_readb(s, addr); val |= lsi_reg_readb(s, addr + 1) << 8; val |= lsi_reg_readb(s, addr + 2) << 16; val |= lsi_reg_readb(s, addr + 3) << 24; return val; } static CPUReadMemoryFunc * const lsi_mmio_readfn[3] = { lsi_mmio_readb, lsi_mmio_readw, lsi_mmio_readl, }; static CPUWriteMemoryFunc * const lsi_mmio_writefn[3] = { lsi_mmio_writeb, lsi_mmio_writew, lsi_mmio_writel, }; static void lsi_ram_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) { LSIState *s = opaque; uint32_t newval; int shift; addr &= 0x1fff; newval = s->script_ram[addr >> 2]; shift = (addr & 3) * 8; newval &= ~(0xff << shift); newval |= val << shift; s->script_ram[addr >> 2] = newval; } static void lsi_ram_writew(void *opaque, target_phys_addr_t addr, uint32_t val) { LSIState *s = opaque; uint32_t newval; addr &= 0x1fff; newval = s->script_ram[addr >> 2]; if (addr & 2) { newval = (newval & 0xffff) | (val << 16); } else { newval = (newval & 0xffff0000) | val; } s->script_ram[addr >> 2] = newval; } static void lsi_ram_writel(void *opaque, target_phys_addr_t addr, uint32_t val) { LSIState *s = opaque; addr &= 0x1fff; s->script_ram[addr >> 2] = val; } static uint32_t lsi_ram_readb(void *opaque, target_phys_addr_t addr) { LSIState *s = opaque; uint32_t val; addr &= 0x1fff; val = s->script_ram[addr >> 2]; val >>= (addr & 3) * 8; return val & 0xff; } static uint32_t lsi_ram_readw(void *opaque, target_phys_addr_t addr) { LSIState *s = opaque; uint32_t val; addr &= 0x1fff; val = s->script_ram[addr >> 2]; if (addr & 2) val >>= 16; return le16_to_cpu(val); } static uint32_t lsi_ram_readl(void *opaque, target_phys_addr_t addr) { LSIState *s = opaque; addr &= 0x1fff; return le32_to_cpu(s->script_ram[addr >> 2]); } static CPUReadMemoryFunc * const lsi_ram_readfn[3] = { lsi_ram_readb, lsi_ram_readw, lsi_ram_readl, }; static CPUWriteMemoryFunc * const lsi_ram_writefn[3] = { lsi_ram_writeb, lsi_ram_writew, lsi_ram_writel, }; static uint32_t lsi_io_readb(void *opaque, uint32_t addr) { LSIState *s = opaque; return lsi_reg_readb(s, addr & 0xff); } static uint32_t lsi_io_readw(void *opaque, uint32_t addr) { LSIState *s = opaque; uint32_t val; addr &= 0xff; val = lsi_reg_readb(s, addr); val |= lsi_reg_readb(s, addr + 1) << 8; return val; } static uint32_t lsi_io_readl(void *opaque, uint32_t addr) { LSIState *s = opaque; uint32_t val; addr &= 0xff; val = lsi_reg_readb(s, addr); val |= lsi_reg_readb(s, addr + 1) << 8; val |= lsi_reg_readb(s, addr + 2) << 16; val |= lsi_reg_readb(s, addr + 3) << 24; return val; } static void lsi_io_writeb(void *opaque, uint32_t addr, uint32_t val) { LSIState *s = opaque; lsi_reg_writeb(s, addr & 0xff, val); } static void lsi_io_writew(void *opaque, uint32_t addr, uint32_t val) { LSIState *s = opaque; addr &= 0xff; lsi_reg_writeb(s, addr, val & 0xff); lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); } static void lsi_io_writel(void *opaque, uint32_t addr, uint32_t val) { LSIState *s = opaque; addr &= 0xff; lsi_reg_writeb(s, addr, val & 0xff); lsi_reg_writeb(s, addr + 1, (val >> 8) & 0xff); lsi_reg_writeb(s, addr + 2, (val >> 16) & 0xff); lsi_reg_writeb(s, addr + 3, (val >> 24) & 0xff); } static void lsi_io_mapfunc(PCIDevice *pci_dev, int region_num, uint32_t addr, uint32_t size, int type) { LSIState *s = DO_UPCAST(LSIState, dev, pci_dev); DPRINTF("Mapping IO at %08x\n", addr); register_ioport_write(addr, 256, 1, lsi_io_writeb, s); register_ioport_read(addr, 256, 1, lsi_io_readb, s); register_ioport_write(addr, 256, 2, lsi_io_writew, s); register_ioport_read(addr, 256, 2, lsi_io_readw, s); register_ioport_write(addr, 256, 4, lsi_io_writel, s); register_ioport_read(addr, 256, 4, lsi_io_readl, s); } static void lsi_ram_mapfunc(PCIDevice *pci_dev, int region_num, uint32_t addr, uint32_t size, int type) { LSIState *s = DO_UPCAST(LSIState, dev, pci_dev); DPRINTF("Mapping ram at %08x\n", addr); s->script_ram_base = addr; cpu_register_physical_memory(addr + 0, 0x2000, s->ram_io_addr); } static void lsi_mmio_mapfunc(PCIDevice *pci_dev, int region_num, uint32_t addr, uint32_t size, int type) { LSIState *s = DO_UPCAST(LSIState, dev, pci_dev); DPRINTF("Mapping registers at %08x\n", addr); cpu_register_physical_memory(addr + 0, 0x400, s->mmio_io_addr); } static void lsi_scsi_save(QEMUFile *f, void *opaque) { LSIState *s = opaque; assert(s->dma_buf == NULL); assert(s->current_dma_len == 0); assert(s->active_commands == 0); pci_device_save(&s->dev, f); qemu_put_sbe32s(f, &s->carry); qemu_put_sbe32s(f, &s->sense); qemu_put_sbe32s(f, &s->msg_action); qemu_put_sbe32s(f, &s->msg_len); qemu_put_buffer(f, s->msg, sizeof (s->msg)); qemu_put_sbe32s(f, &s->waiting); qemu_put_be32s(f, &s->dsa); qemu_put_be32s(f, &s->temp); qemu_put_be32s(f, &s->dnad); qemu_put_be32s(f, &s->dbc); qemu_put_8s(f, &s->istat0); qemu_put_8s(f, &s->istat1); qemu_put_8s(f, &s->dcmd); qemu_put_8s(f, &s->dstat); qemu_put_8s(f, &s->dien); qemu_put_8s(f, &s->sist0); qemu_put_8s(f, &s->sist1); qemu_put_8s(f, &s->sien0); qemu_put_8s(f, &s->sien1); qemu_put_8s(f, &s->mbox0); qemu_put_8s(f, &s->mbox1); qemu_put_8s(f, &s->dfifo); qemu_put_8s(f, &s->ctest2); qemu_put_8s(f, &s->ctest3); qemu_put_8s(f, &s->ctest4); qemu_put_8s(f, &s->ctest5); qemu_put_8s(f, &s->ccntl0); qemu_put_8s(f, &s->ccntl1); qemu_put_be32s(f, &s->dsp); qemu_put_be32s(f, &s->dsps); qemu_put_8s(f, &s->dmode); qemu_put_8s(f, &s->dcntl); qemu_put_8s(f, &s->scntl0); qemu_put_8s(f, &s->scntl1); qemu_put_8s(f, &s->scntl2); qemu_put_8s(f, &s->scntl3); qemu_put_8s(f, &s->sstat0); qemu_put_8s(f, &s->sstat1); qemu_put_8s(f, &s->scid); qemu_put_8s(f, &s->sxfer); qemu_put_8s(f, &s->socl); qemu_put_8s(f, &s->sdid); qemu_put_8s(f, &s->ssid); qemu_put_8s(f, &s->sfbr); qemu_put_8s(f, &s->stest1); qemu_put_8s(f, &s->stest2); qemu_put_8s(f, &s->stest3); qemu_put_8s(f, &s->sidl); qemu_put_8s(f, &s->stime0); qemu_put_8s(f, &s->respid0); qemu_put_8s(f, &s->respid1); qemu_put_be32s(f, &s->mmrs); qemu_put_be32s(f, &s->mmws); qemu_put_be32s(f, &s->sfs); qemu_put_be32s(f, &s->drs); qemu_put_be32s(f, &s->sbms); qemu_put_be32s(f, &s->dbms); qemu_put_be32s(f, &s->dnad64); qemu_put_be32s(f, &s->pmjad1); qemu_put_be32s(f, &s->pmjad2); qemu_put_be32s(f, &s->rbc); qemu_put_be32s(f, &s->ua); qemu_put_be32s(f, &s->ia); qemu_put_be32s(f, &s->sbc); qemu_put_be32s(f, &s->csbc); qemu_put_buffer(f, (uint8_t *)s->scratch, sizeof (s->scratch)); qemu_put_8s(f, &s->sbr); qemu_put_buffer(f, (uint8_t *)s->script_ram, sizeof (s->script_ram)); } static int lsi_scsi_load(QEMUFile *f, void *opaque, int version_id) { LSIState *s = opaque; int ret; if (version_id > 0) { return -EINVAL; } if ((ret = pci_device_load(&s->dev, f)) < 0) return ret; qemu_get_sbe32s(f, &s->carry); qemu_get_sbe32s(f, &s->sense); qemu_get_sbe32s(f, &s->msg_action); qemu_get_sbe32s(f, &s->msg_len); qemu_get_buffer(f, s->msg, sizeof (s->msg)); qemu_get_sbe32s(f, &s->waiting); qemu_get_be32s(f, &s->dsa); qemu_get_be32s(f, &s->temp); qemu_get_be32s(f, &s->dnad); qemu_get_be32s(f, &s->dbc); qemu_get_8s(f, &s->istat0); qemu_get_8s(f, &s->istat1); qemu_get_8s(f, &s->dcmd); qemu_get_8s(f, &s->dstat); qemu_get_8s(f, &s->dien); qemu_get_8s(f, &s->sist0); qemu_get_8s(f, &s->sist1); qemu_get_8s(f, &s->sien0); qemu_get_8s(f, &s->sien1); qemu_get_8s(f, &s->mbox0); qemu_get_8s(f, &s->mbox1); qemu_get_8s(f, &s->dfifo); qemu_get_8s(f, &s->ctest2); qemu_get_8s(f, &s->ctest3); qemu_get_8s(f, &s->ctest4); qemu_get_8s(f, &s->ctest5); qemu_get_8s(f, &s->ccntl0); qemu_get_8s(f, &s->ccntl1); qemu_get_be32s(f, &s->dsp); qemu_get_be32s(f, &s->dsps); qemu_get_8s(f, &s->dmode); qemu_get_8s(f, &s->dcntl); qemu_get_8s(f, &s->scntl0); qemu_get_8s(f, &s->scntl1); qemu_get_8s(f, &s->scntl2); qemu_get_8s(f, &s->scntl3); qemu_get_8s(f, &s->sstat0); qemu_get_8s(f, &s->sstat1); qemu_get_8s(f, &s->scid); qemu_get_8s(f, &s->sxfer); qemu_get_8s(f, &s->socl); qemu_get_8s(f, &s->sdid); qemu_get_8s(f, &s->ssid); qemu_get_8s(f, &s->sfbr); qemu_get_8s(f, &s->stest1); qemu_get_8s(f, &s->stest2); qemu_get_8s(f, &s->stest3); qemu_get_8s(f, &s->sidl); qemu_get_8s(f, &s->stime0); qemu_get_8s(f, &s->respid0); qemu_get_8s(f, &s->respid1); qemu_get_be32s(f, &s->mmrs); qemu_get_be32s(f, &s->mmws); qemu_get_be32s(f, &s->sfs); qemu_get_be32s(f, &s->drs); qemu_get_be32s(f, &s->sbms); qemu_get_be32s(f, &s->dbms); qemu_get_be32s(f, &s->dnad64); qemu_get_be32s(f, &s->pmjad1); qemu_get_be32s(f, &s->pmjad2); qemu_get_be32s(f, &s->rbc); qemu_get_be32s(f, &s->ua); qemu_get_be32s(f, &s->ia); qemu_get_be32s(f, &s->sbc); qemu_get_be32s(f, &s->csbc); qemu_get_buffer(f, (uint8_t *)s->scratch, sizeof (s->scratch)); qemu_get_8s(f, &s->sbr); qemu_get_buffer(f, (uint8_t *)s->script_ram, sizeof (s->script_ram)); return 0; } static int lsi_scsi_uninit(PCIDevice *d) { LSIState *s = DO_UPCAST(LSIState, dev, d); cpu_unregister_io_memory(s->mmio_io_addr); cpu_unregister_io_memory(s->ram_io_addr); qemu_free(s->queue); return 0; } static int lsi_scsi_init(PCIDevice *dev) { LSIState *s = DO_UPCAST(LSIState, dev, dev); uint8_t *pci_conf; pci_conf = s->dev.config; /* PCI Vendor ID (word) */ pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_LSI_LOGIC); /* PCI device ID (word) */ pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_LSI_53C895A); /* PCI base class code */ pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_SCSI); /* PCI subsystem ID */ pci_conf[0x2e] = 0x00; pci_conf[0x2f] = 0x10; /* PCI latency timer = 255 */ pci_conf[0x0d] = 0xff; /* Interrupt pin 1 */ pci_conf[0x3d] = 0x01; s->mmio_io_addr = cpu_register_io_memory(lsi_mmio_readfn, lsi_mmio_writefn, s); s->ram_io_addr = cpu_register_io_memory(lsi_ram_readfn, lsi_ram_writefn, s); pci_register_bar((struct PCIDevice *)s, 0, 256, PCI_ADDRESS_SPACE_IO, lsi_io_mapfunc); pci_register_bar((struct PCIDevice *)s, 1, 0x400, PCI_ADDRESS_SPACE_MEM, lsi_mmio_mapfunc); pci_register_bar((struct PCIDevice *)s, 2, 0x2000, PCI_ADDRESS_SPACE_MEM, lsi_ram_mapfunc); s->queue = qemu_malloc(sizeof(lsi_queue)); s->queue_len = 1; s->active_commands = 0; s->dev.unregister = lsi_scsi_uninit; lsi_soft_reset(s); s->bus = scsi_bus_new(&dev->qdev, 1, LSI_MAX_DEVS, lsi_command_complete); scsi_bus_legacy_handle_cmdline(s->bus); register_savevm("lsiscsi", -1, 0, lsi_scsi_save, lsi_scsi_load, s); return 0; } static PCIDeviceInfo lsi_info = { .qdev.name = "lsi53c895a", .qdev.alias = "lsi", .qdev.size = sizeof(LSIState), .init = lsi_scsi_init, }; static void lsi53c895a_register_devices(void) { pci_qdev_register(&lsi_info); } device_init(lsi53c895a_register_devices);