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-rw-r--r--hw/lsi53c895a.c1571
1 files changed, 1571 insertions, 0 deletions
diff --git a/hw/lsi53c895a.c b/hw/lsi53c895a.c
new file mode 100644
index 0000000..24dff0e
--- /dev/null
+++ b/hw/lsi53c895a.c
@@ -0,0 +1,1571 @@
+/*
+ * 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 "vl.h"
+
+//#define DEBUG_LSI
+//#define DEBUG_LSI_REG
+
+#ifdef DEBUG_LSI
+#define DPRINTF(fmt, args...) \
+do { printf("lsi_scsi: " fmt , ##args); } while (0)
+#define BADF(fmt, args...) \
+do { fprintf(stderr, "lsi_scsi: " fmt , ##args); exit(1);} while (0)
+#else
+#define DPRINTF(fmt, args...) do {} while(0)
+#define BADF(fmt, args...) \
+do { fprintf(stderr, "lsi_scsi: " fmt , ##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 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
+
+/* The HBA is ID 7, so for simplicitly limit to 7 devices. */
+#define LSI_MAX_DEVS 7
+
+typedef struct {
+ PCIDevice pci_dev;
+ int mmio_io_addr;
+ int ram_io_addr;
+ uint32_t script_ram_base;
+ uint32_t data_len;
+
+ int carry; /* ??? Should this be an a visible register somewhere? */
+ int sense;
+ uint8_t msg;
+ /* Nonzero if a Wait Reselect instruction has been issued. */
+ int waiting;
+ SCSIDevice *scsi_dev[LSI_MAX_DEVS];
+ SCSIDevice *current_dev;
+ int current_lun;
+
+ 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 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 sfbr;
+ uint8_t stest1;
+ uint8_t stest2;
+ uint8_t stest3;
+ 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 dmbs;
+ 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[13]; /* SCRATCHA-SCRATCHR */
+
+ /* 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->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->stime0 = 0;
+ s->respid0 = 0x80;
+ s->respid1 = 0;
+ s->mmrs = 0;
+ s->mmws = 0;
+ s->sfs = 0;
+ s->drs = 0;
+ s->sbms = 0;
+ s->dmbs = 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;
+}
+
+static uint8_t lsi_reg_readb(LSIState *s, int offset);
+static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val);
+
+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;
+ }
+ pci_set_irq(&s->pci_dev, 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);
+}
+
+static void lsi_do_dma(LSIState *s, int out)
+{
+ uint8_t buf[TARGET_PAGE_SIZE];
+ uint32_t addr;
+ uint32_t count;
+ int n;
+
+ count = s->dbc;
+ addr = s->dnad;
+ DPRINTF("DMA %s addr=0x%08x len=%d avail=%d\n", out ? "out" : "in",
+ addr, count, s->data_len);
+ /* ??? Too long transfers are truncated. Don't know if this is the
+ correct behavior. */
+ if (count > s->data_len) {
+ /* If the DMA length is greater then the device data length then
+ a phase mismatch will occur. */
+ count = s->data_len;
+ s->dbc = count;
+ lsi_bad_phase(s, out, PHASE_ST);
+ }
+
+ s->csbc += count;
+
+ /* ??? Set SFBR to first data byte. */
+ while (count) {
+ n = (count > TARGET_PAGE_SIZE) ? TARGET_PAGE_SIZE : count;
+ if (out) {
+ cpu_physical_memory_read(addr, buf, n);
+ scsi_write_data(s->current_dev, buf, n);
+ } else {
+ scsi_read_data(s->current_dev, buf, n);
+ cpu_physical_memory_write(addr, buf, n);
+ }
+ addr += n;
+ count -= n;
+ }
+}
+
+
+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];
+ n = scsi_send_command(s->current_dev, 0, buf, s->current_lun);
+ if (n > 0) {
+ s->data_len = n;
+ lsi_set_phase(s, PHASE_DI);
+ } else if (n < 0) {
+ s->data_len = -n;
+ lsi_set_phase(s, PHASE_DO);
+ }
+}
+
+static void lsi_command_complete(void *opaque, uint32_t tag, int sense)
+{
+ LSIState *s = (LSIState *)opaque;
+
+ DPRINTF("Command complete sense=%d\n", sense);
+ s->sense = sense;
+ lsi_set_phase(s, PHASE_ST);
+}
+
+static void lsi_do_status(LSIState *s)
+{
+ DPRINTF("Get status len=%d sense=%d\n", s->dbc, s->sense);
+ if (s->dbc != 1)
+ BADF("Bad Status move\n");
+ s->dbc = 1;
+ s->msg = s->sense;
+ cpu_physical_memory_write(s->dnad, &s->msg, 1);
+ s->sfbr = s->msg;
+ lsi_set_phase(s, PHASE_MI);
+ s->msg = 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)
+{
+ DPRINTF("Message in len=%d\n", s->dbc);
+ s->dbc = 1;
+ s->sfbr = s->msg;
+ cpu_physical_memory_write(s->dnad, &s->msg, 1);
+ if (s->msg == 0) {
+ lsi_disconnect(s);
+ } else {
+ /* ??? Check if ATN (not yet implemented) is asserted and maybe
+ switch to PHASE_MO. */
+ lsi_set_phase(s, PHASE_CMD);
+ }
+}
+
+static void lsi_do_msgout(LSIState *s)
+{
+ uint8_t msg;
+
+ DPRINTF("MSG out len=%d\n", s->dbc);
+ if (s->dbc != 1) {
+ /* Multibyte messages not implemented. */
+ s->msg = 7; /* MESSAGE REJECT */
+ //s->dbc = 1;
+ //lsi_bad_phase(s, 1, PHASE_MI);
+ lsi_set_phase(s, PHASE_MI);
+ return;
+ }
+ cpu_physical_memory_read(s->dnad, &msg, 1);
+ s->sfbr = msg;
+ s->dnad++;
+
+ switch (msg) {
+ case 0x00:
+ DPRINTF("Got Disconnect\n");
+ lsi_disconnect(s);
+ return;
+ case 0x08:
+ DPRINTF("Got No Operation\n");
+ lsi_set_phase(s, PHASE_CMD);
+ return;
+ }
+ if ((msg & 0x80) == 0) {
+ DPRINTF("Unimplemented message 0x%d\n", msg);
+ s->msg = 7; /* MESSAGE REJECT */
+ lsi_bad_phase(s, 1, PHASE_MI);
+ return;
+ }
+ s->current_lun = msg & 7;
+ DPRINTF("Select LUN %d\n", s->current_lun);
+ lsi_set_phase(s, PHASE_CMD);
+}
+
+/* Sign extend a 24-bit value. */
+static inline int32_t sxt24(int32_t n)
+{
+ return (n << 8) >> 8;
+}
+
+static void lsi_memcpy(LSIState *s, uint32_t dest, uint32_t src, int count)
+{
+ int n;
+ uint8_t buf[TARGET_PAGE_SIZE];
+
+ DPRINTF("memcpy dest 0x%08x src 0x%08x count %d\n", dest, src, count);
+ while (count) {
+ n = (count > TARGET_PAGE_SIZE) ? TARGET_PAGE_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_execute_script(LSIState *s)
+{
+ uint32_t insn;
+ uint32_t addr;
+ int opcode;
+
+ s->istat1 |= LSI_ISTAT1_SRUN;
+again:
+ insn = read_dword(s, s->dsp);
+ addr = read_dword(s, s->dsp + 4);
+ 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;
+ 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. */
+ offset = sxt24(addr);
+ cpu_physical_memory_read(s->dsa + offset, (uint8_t *)buf, 8);
+ s->dbc = cpu_to_le32(buf[0]);
+ addr = cpu_to_le32(buf[1]);
+ }
+ 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;
+ switch (s->sstat1 & 0x7) {
+ case PHASE_DO:
+ lsi_do_dma(s, 1);
+ break;
+ case PHASE_DI:
+ lsi_do_dma(s, 0);
+ 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;
+ /* ??? Set ESA. */
+ s->ia = s->dsp - 8;
+ 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->sstat0 |= LSI_SSTAT0_WOA;
+ s->scntl1 &= ~LSI_SCNTL1_IARB;
+ s->sdid = id;
+ if (id >= LSI_MAX_DEVS || !s->scsi_dev[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->scsi_dev[id];
+ 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 */
+ DPRINTF("Wait Reselect\n");
+ s->waiting = 1;
+ 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 %d%s\n",
+ opcode_names[opcode - 5], reg,
+ operator_names[operator], data8,
+ (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);
+ 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)) {
+ DPRINTF("Load reg 0x%x size %d addr 0x%08x\n", reg, n, addr);
+ cpu_physical_memory_read(addr, data, n);
+ 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);
+ }
+ }
+ }
+ /* ??? Need to avoid infinite loops. */
+ 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_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 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 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 = 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 0x24: /* DBC[0:7] */
+ return s->dbc & 0xff;
+ case 0x25: /* DBC[8:15] */
+ return (s->dbc >> 8) & 0xff;
+ case 0x26: /* DBC[16->23] */
+ return (s->dbc >> 16) & 0xff;
+ case 0x27: /* DCMD */
+ return s->dcmd;
+ 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 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 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 0x52: /* STEST4 */
+ return 0xe0;
+ case 0x56: /* CCNTL0 */
+ return s->ccntl0;
+ case 0x57: /* CCNTL1 */
+ return s->ccntl1;
+ case 0x58: case 0x59: /* SBDL */
+ 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(dmbs, 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_REG32
+}
+
+static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
+{
+#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->scntl3 = val;
+ break;
+ case 0x03: /* SCNTL3 */
+ s->scntl3 = val;
+ break;
+ case 0x04: /* SCID */
+ s->scid = val;
+ break;
+ case 0x05: /* SXFER */
+ s->sxfer = val;
+ break;
+ case 0x07: /* GPREG0 */
+ break;
+ 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 && 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);
+ }
+ case 0x16: /* MBOX0 */
+ s->mbox0 = val;
+ case 0x17: /* MBOX1 */
+ s->mbox1 = val;
+ 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 0x2c: /* DSPS[0:7] */
+ s->dsp &= 0xffffff00;
+ s->dsp |= val;
+ break;
+ case 0x2d: /* DSPS[8:15] */
+ s->dsp &= 0xffff00ff;
+ s->dsp |= val << 8;
+ break;
+ case 0x2e: /* DSPS[16:23] */
+ s->dsp &= 0xff00ffff;
+ s->dsp |= val << 16;
+ break;
+ case 0x2f: /* DSPS[14:31] */
+ 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 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(dmbs, 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_REG32
+}
+
+static void lsi_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+ LSIState *s = (LSIState *)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 = (LSIState *)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 = (LSIState *)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 = (LSIState *)opaque;
+
+ return lsi_reg_readb(s, addr & 0xff);
+}
+
+static uint32_t lsi_mmio_readw(void *opaque, target_phys_addr_t addr)
+{
+ LSIState *s = (LSIState *)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 = (LSIState *)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 *lsi_mmio_readfn[3] = {
+ lsi_mmio_readb,
+ lsi_mmio_readw,
+ lsi_mmio_readl,
+};
+
+static CPUWriteMemoryFunc *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 = (LSIState *)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 = (LSIState *)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 = (LSIState *)opaque;
+
+ addr &= 0x1fff;
+ s->script_ram[addr >> 2] = val;
+}
+
+static uint32_t lsi_ram_readb(void *opaque, target_phys_addr_t addr)
+{
+ LSIState *s = (LSIState *)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 = (LSIState *)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 = (LSIState *)opaque;
+
+ addr &= 0x1fff;
+ return le32_to_cpu(s->script_ram[addr >> 2]);
+}
+
+static CPUReadMemoryFunc *lsi_ram_readfn[3] = {
+ lsi_ram_readb,
+ lsi_ram_readw,
+ lsi_ram_readl,
+};
+
+static CPUWriteMemoryFunc *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 = (LSIState *)opaque;
+ return lsi_reg_readb(s, addr & 0xff);
+}
+
+static uint32_t lsi_io_readw(void *opaque, uint32_t addr)
+{
+ LSIState *s = (LSIState *)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 = (LSIState *)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 = (LSIState *)opaque;
+ lsi_reg_writeb(s, addr & 0xff, val);
+}
+
+static void lsi_io_writew(void *opaque, uint32_t addr, uint32_t val)
+{
+ LSIState *s = (LSIState *)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 = (LSIState *)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 + 2, (val >> 24) & 0xff);
+}
+
+static void lsi_io_mapfunc(PCIDevice *pci_dev, int region_num,
+ uint32_t addr, uint32_t size, int type)
+{
+ LSIState *s = (LSIState *)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 = (LSIState *)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 = (LSIState *)pci_dev;
+
+ DPRINTF("Mapping registers at %08x\n", addr);
+ cpu_register_physical_memory(addr + 0, 0x400, s->mmio_io_addr);
+}
+
+void lsi_scsi_attach(void *opaque, BlockDriverState *bd, int id)
+{
+ LSIState *s = (LSIState *)opaque;
+
+ if (id < 0) {
+ for (id = 0; id < LSI_MAX_DEVS; id++) {
+ if (s->scsi_dev[id] == NULL)
+ break;
+ }
+ }
+ if (id >= LSI_MAX_DEVS) {
+ BADF("Bad Device ID %d\n", id);
+ return;
+ }
+ if (s->scsi_dev[id]) {
+ DPRINTF("Destroying device %d\n", id);
+ scsi_disk_destroy(s->scsi_dev[id]);
+ }
+ DPRINTF("Attaching block device %d\n", id);
+ s->scsi_dev[id] = scsi_disk_init(bd, lsi_command_complete, s);
+}
+
+void *lsi_scsi_init(PCIBus *bus, int devfn)
+{
+ LSIState *s;
+
+ s = (LSIState *)pci_register_device(bus, "LSI53C895A SCSI HBA",
+ sizeof(*s), devfn, NULL, NULL);
+ if (s == NULL) {
+ fprintf(stderr, "lsi-scsi: Failed to register PCI device\n");
+ return NULL;
+ }
+
+ s->pci_dev.config[0x00] = 0x00;
+ s->pci_dev.config[0x01] = 0x10;
+ s->pci_dev.config[0x02] = 0x12;
+ s->pci_dev.config[0x03] = 0x00;
+ s->pci_dev.config[0x0b] = 0x01;
+ s->pci_dev.config[0x3d] = 0x01; /* interrupt pin 1 */
+
+ s->mmio_io_addr = cpu_register_io_memory(0, lsi_mmio_readfn,
+ lsi_mmio_writefn, s);
+ s->ram_io_addr = cpu_register_io_memory(0, lsi_ram_readfn,
+ lsi_ram_writefn, s);
+
+ pci_register_io_region((struct PCIDevice *)s, 0, 256,
+ PCI_ADDRESS_SPACE_IO, lsi_io_mapfunc);
+ pci_register_io_region((struct PCIDevice *)s, 1, 0x400,
+ PCI_ADDRESS_SPACE_MEM, lsi_mmio_mapfunc);
+ pci_register_io_region((struct PCIDevice *)s, 2, 0x2000,
+ PCI_ADDRESS_SPACE_MEM, lsi_ram_mapfunc);
+
+ lsi_soft_reset(s);
+
+ return s;
+}
+
generated by cgit v1.1 at 2024-05-20 18:37:28 +0000