Commit 5ad6bb97 authored by blueswir1's avatar blueswir1
Browse files

Name the magic constants, wrap long lines


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3751 c046a42c-6fe2-441c-8c8c-71466251a162
parent 2d8ee4e7
......@@ -32,8 +32,8 @@
//#define DEBUG_ESP
/*
* On Sparc32, this is the ESP (NCR53C90) part of chip STP2000 (Master I/O), also
* produced as NCR89C100. See
* On Sparc32, this is the ESP (NCR53C90) part of chip STP2000 (Master I/O),
* also produced as NCR89C100. See
* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt
* and
* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR53C9X.txt
......@@ -81,12 +81,51 @@ struct ESPState {
void *dma_opaque;
};
#define ESP_TCLO 0x0
#define ESP_TCMID 0x1
#define ESP_FIFO 0x2
#define ESP_CMD 0x3
#define ESP_RSTAT 0x4
#define ESP_WBUSID 0x4
#define ESP_RINTR 0x5
#define ESP_WSEL 0x5
#define ESP_RSEQ 0x6
#define ESP_WSYNTP 0x6
#define ESP_RFLAGS 0x7
#define ESP_WSYNO 0x7
#define ESP_CFG1 0x8
#define ESP_RRES1 0x9
#define ESP_WCCF 0x9
#define ESP_RRES2 0xa
#define ESP_WTEST 0xa
#define ESP_CFG2 0xb
#define ESP_CFG3 0xc
#define ESP_RES3 0xd
#define ESP_TCHI 0xe
#define ESP_RES4 0xf
#define CMD_DMA 0x80
#define CMD_CMD 0x7f
#define CMD_NOP 0x00
#define CMD_FLUSH 0x01
#define CMD_RESET 0x02
#define CMD_BUSRESET 0x03
#define CMD_TI 0x10
#define CMD_ICCS 0x11
#define CMD_MSGACC 0x12
#define CMD_SATN 0x1a
#define CMD_SELATN 0x42
#define CMD_SELATNS 0x43
#define CMD_ENSEL 0x44
#define STAT_DO 0x00
#define STAT_DI 0x01
#define STAT_CD 0x02
#define STAT_ST 0x03
#define STAT_MI 0x06
#define STAT_MO 0x07
#define STAT_PIO_MASK 0x06
#define STAT_TC 0x10
#define STAT_PE 0x20
......@@ -101,13 +140,19 @@ struct ESPState {
#define SEQ_0 0x0
#define SEQ_CD 0x4
#define CFG1_RESREPT 0x40
#define CFG2_MASK 0x15
#define TCHI_FAS100A 0x4
static int get_cmd(ESPState *s, uint8_t *buf)
{
uint32_t dmalen;
int target;
dmalen = s->rregs[0] | (s->rregs[1] << 8);
target = s->wregs[4] & 7;
dmalen = s->rregs[ESP_TCLO] | (s->rregs[ESP_TCMID] << 8);
target = s->wregs[ESP_WBUSID] & 7;
DPRINTF("get_cmd: len %d target %d\n", dmalen, target);
if (s->dma) {
espdma_memory_read(s->dma_opaque, buf, dmalen);
......@@ -129,9 +174,9 @@ static int get_cmd(ESPState *s, uint8_t *buf)
if (target >= MAX_DISKS || !s->scsi_dev[target]) {
// No such drive
s->rregs[4] = STAT_IN;
s->rregs[5] = INTR_DC;
s->rregs[6] = SEQ_0;
s->rregs[ESP_RSTAT] = STAT_IN;
s->rregs[ESP_RINTR] = INTR_DC;
s->rregs[ESP_RSEQ] = SEQ_0;
qemu_irq_raise(s->irq);
return 0;
}
......@@ -149,19 +194,19 @@ static void do_cmd(ESPState *s, uint8_t *buf)
datalen = scsi_send_command(s->current_dev, 0, &buf[1], lun);
s->ti_size = datalen;
if (datalen != 0) {
s->rregs[4] = STAT_IN | STAT_TC;
s->rregs[ESP_RSTAT] = STAT_IN | STAT_TC;
s->dma_left = 0;
s->dma_counter = 0;
if (datalen > 0) {
s->rregs[4] |= STAT_DI;
s->rregs[ESP_RSTAT] |= STAT_DI;
scsi_read_data(s->current_dev, 0);
} else {
s->rregs[4] |= STAT_DO;
s->rregs[ESP_RSTAT] |= STAT_DO;
scsi_write_data(s->current_dev, 0);
}
}
s->rregs[5] = INTR_BS | INTR_FC;
s->rregs[6] = SEQ_CD;
s->rregs[ESP_RINTR] = INTR_BS | INTR_FC;
s->rregs[ESP_RSEQ] = SEQ_CD;
qemu_irq_raise(s->irq);
}
......@@ -181,9 +226,9 @@ static void handle_satn_stop(ESPState *s)
if (s->cmdlen) {
DPRINTF("Set ATN & Stop: cmdlen %d\n", s->cmdlen);
s->do_cmd = 1;
s->rregs[4] = STAT_IN | STAT_TC | STAT_CD;
s->rregs[5] = INTR_BS | INTR_FC;
s->rregs[6] = SEQ_CD;
s->rregs[ESP_RSTAT] = STAT_IN | STAT_TC | STAT_CD;
s->rregs[ESP_RINTR] = INTR_BS | INTR_FC;
s->rregs[ESP_RSEQ] = SEQ_CD;
qemu_irq_raise(s->irq);
}
}
......@@ -195,26 +240,26 @@ static void write_response(ESPState *s)
s->ti_buf[1] = 0;
if (s->dma) {
espdma_memory_write(s->dma_opaque, s->ti_buf, 2);
s->rregs[4] = STAT_IN | STAT_TC | STAT_ST;
s->rregs[5] = INTR_BS | INTR_FC;
s->rregs[6] = SEQ_CD;
s->rregs[ESP_RSTAT] = STAT_IN | STAT_TC | STAT_ST;
s->rregs[ESP_RINTR] = INTR_BS | INTR_FC;
s->rregs[ESP_RSEQ] = SEQ_CD;
} else {
s->ti_size = 2;
s->ti_rptr = 0;
s->ti_wptr = 0;
s->rregs[7] = 2;
s->rregs[ESP_RFLAGS] = 2;
}
qemu_irq_raise(s->irq);
}
static void esp_dma_done(ESPState *s)
{
s->rregs[4] |= STAT_IN | STAT_TC;
s->rregs[5] = INTR_BS;
s->rregs[6] = 0;
s->rregs[7] = 0;
s->rregs[0] = 0;
s->rregs[1] = 0;
s->rregs[ESP_RSTAT] |= STAT_IN | STAT_TC;
s->rregs[ESP_RINTR] = INTR_BS;
s->rregs[ESP_RSEQ] = 0;
s->rregs[ESP_RFLAGS] = 0;
s->rregs[ESP_TCLO] = 0;
s->rregs[ESP_TCMID] = 0;
qemu_irq_raise(s->irq);
}
......@@ -287,7 +332,7 @@ static void esp_command_complete(void *opaque, int reason, uint32_t tag,
if (arg)
DPRINTF("Command failed\n");
s->sense = arg;
s->rregs[4] = STAT_ST;
s->rregs[ESP_RSTAT] = STAT_ST;
esp_dma_done(s);
s->current_dev = NULL;
} else {
......@@ -308,7 +353,7 @@ static void handle_ti(ESPState *s)
{
uint32_t dmalen, minlen;
dmalen = s->rregs[0] | (s->rregs[1] << 8);
dmalen = s->rregs[ESP_TCLO] | (s->rregs[ESP_TCMID] << 8);
if (dmalen==0) {
dmalen=0x10000;
}
......@@ -323,7 +368,7 @@ static void handle_ti(ESPState *s)
DPRINTF("Transfer Information len %d\n", minlen);
if (s->dma) {
s->dma_left = minlen;
s->rregs[4] &= ~STAT_TC;
s->rregs[ESP_RSTAT] &= ~STAT_TC;
esp_do_dma(s);
} else if (s->do_cmd) {
DPRINTF("command len %d\n", s->cmdlen);
......@@ -341,7 +386,7 @@ static void esp_reset(void *opaque)
memset(s->rregs, 0, ESP_REGS);
memset(s->wregs, 0, ESP_REGS);
s->rregs[0x0e] = 0x4; // Indicate fas100a
s->rregs[ESP_TCHI] = TCHI_FAS100A; // Indicate fas100a
s->ti_size = 0;
s->ti_rptr = 0;
s->ti_wptr = 0;
......@@ -363,16 +408,15 @@ static uint32_t esp_mem_readb(void *opaque, target_phys_addr_t addr)
saddr = (addr & ESP_MASK) >> 2;
DPRINTF("read reg[%d]: 0x%2.2x\n", saddr, s->rregs[saddr]);
switch (saddr) {
case 2:
// FIFO
case ESP_FIFO:
if (s->ti_size > 0) {
s->ti_size--;
if ((s->rregs[4] & 6) == 0) {
if ((s->rregs[ESP_RSTAT] & STAT_PIO_MASK) == 0) {
/* Data in/out. */
fprintf(stderr, "esp: PIO data read not implemented\n");
s->rregs[2] = 0;
s->rregs[ESP_FIFO] = 0;
} else {
s->rregs[2] = s->ti_buf[s->ti_rptr++];
s->rregs[ESP_FIFO] = s->ti_buf[s->ti_rptr++];
}
qemu_irq_raise(s->irq);
}
......@@ -381,10 +425,9 @@ static uint32_t esp_mem_readb(void *opaque, target_phys_addr_t addr)
s->ti_wptr = 0;
}
break;
case 5:
// interrupt
case ESP_RINTR:
// Clear interrupt/error status bits
s->rregs[4] &= ~(STAT_IN | STAT_GE | STAT_PE);
s->rregs[ESP_RSTAT] &= ~(STAT_IN | STAT_GE | STAT_PE);
qemu_irq_lower(s->irq);
break;
default:
......@@ -399,17 +442,17 @@ static void esp_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
uint32_t saddr;
saddr = (addr & ESP_MASK) >> 2;
DPRINTF("write reg[%d]: 0x%2.2x -> 0x%2.2x\n", saddr, s->wregs[saddr], val);
DPRINTF("write reg[%d]: 0x%2.2x -> 0x%2.2x\n", saddr, s->wregs[saddr],
val);
switch (saddr) {
case 0:
case 1:
s->rregs[4] &= ~STAT_TC;
case ESP_TCLO:
case ESP_TCMID:
s->rregs[ESP_RSTAT] &= ~STAT_TC;
break;
case 2:
// FIFO
case ESP_FIFO:
if (s->do_cmd) {
s->cmdbuf[s->cmdlen++] = val & 0xff;
} else if ((s->rregs[4] & 6) == 0) {
} else if ((s->rregs[ESP_RSTAT] & STAT_PIO_MASK) == 0) {
uint8_t buf;
buf = val & 0xff;
s->ti_size--;
......@@ -419,63 +462,62 @@ static void esp_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
s->ti_buf[s->ti_wptr++] = val & 0xff;
}
break;
case 3:
case ESP_CMD:
s->rregs[saddr] = val;
// Command
if (val & 0x80) {
if (val & CMD_DMA) {
s->dma = 1;
/* Reload DMA counter. */
s->rregs[0] = s->wregs[0];
s->rregs[1] = s->wregs[1];
s->rregs[ESP_TCLO] = s->wregs[ESP_TCLO];
s->rregs[ESP_TCMID] = s->wregs[ESP_TCMID];
} else {
s->dma = 0;
}
switch(val & 0x7f) {
case 0:
switch(val & CMD_CMD) {
case CMD_NOP:
DPRINTF("NOP (%2.2x)\n", val);
break;
case 1:
case CMD_FLUSH:
DPRINTF("Flush FIFO (%2.2x)\n", val);
//s->ti_size = 0;
s->rregs[5] = INTR_FC;
s->rregs[6] = 0;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
break;
case 2:
case CMD_RESET:
DPRINTF("Chip reset (%2.2x)\n", val);
esp_reset(s);
break;
case 3:
case CMD_BUSRESET:
DPRINTF("Bus reset (%2.2x)\n", val);
s->rregs[5] = INTR_RST;
if (!(s->wregs[8] & 0x40)) {
s->rregs[ESP_RINTR] = INTR_RST;
if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) {
qemu_irq_raise(s->irq);
}
break;
case 0x10:
case CMD_TI:
handle_ti(s);
break;
case 0x11:
case CMD_ICCS:
DPRINTF("Initiator Command Complete Sequence (%2.2x)\n", val);
write_response(s);
break;
case 0x12:
case CMD_MSGACC:
DPRINTF("Message Accepted (%2.2x)\n", val);
write_response(s);
s->rregs[5] = INTR_DC;
s->rregs[6] = 0;
s->rregs[ESP_RINTR] = INTR_DC;
s->rregs[ESP_RSEQ] = 0;
break;
case 0x1a:
case CMD_SATN:
DPRINTF("Set ATN (%2.2x)\n", val);
break;
case 0x42:
case CMD_SELATN:
DPRINTF("Set ATN (%2.2x)\n", val);
handle_satn(s);
break;
case 0x43:
case CMD_SELATNS:
DPRINTF("Set ATN & stop (%2.2x)\n", val);
handle_satn_stop(s);
break;
case 0x44:
case CMD_ENSEL:
DPRINTF("Enable selection (%2.2x)\n", val);
break;
default:
......@@ -483,17 +525,17 @@ static void esp_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
break;
}
break;
case 4 ... 7:
case ESP_WBUSID ... ESP_WSYNO:
break;
case 8:
case ESP_CFG1:
s->rregs[saddr] = val;
break;
case 9 ... 10:
case ESP_WCCF ... ESP_WTEST:
break;
case 11:
s->rregs[saddr] = val & 0x15;
case ESP_CFG2:
s->rregs[saddr] = val & CFG2_MASK;
break;
case 12 ... 15:
case ESP_CFG3 ... ESP_RES4:
s->rregs[saddr] = val;
break;
default:
......
......@@ -61,12 +61,16 @@ do { printf("IOMMU: " fmt , ##args); } while (0)
#define IOMMU_AFSR (0x1000 >> 2)
#define IOMMU_AFSR_ERR 0x80000000 /* LE, TO, or BE asserted */
#define IOMMU_AFSR_LE 0x40000000 /* SBUS reports error after transaction */
#define IOMMU_AFSR_TO 0x20000000 /* Write access took more than 12.8 us. */
#define IOMMU_AFSR_BE 0x10000000 /* Write access received error acknowledge */
#define IOMMU_AFSR_LE 0x40000000 /* SBUS reports error after
transaction */
#define IOMMU_AFSR_TO 0x20000000 /* Write access took more than
12.8 us. */
#define IOMMU_AFSR_BE 0x10000000 /* Write access received error
acknowledge */
#define IOMMU_AFSR_SIZE 0x0e000000 /* Size of transaction causing error */
#define IOMMU_AFSR_S 0x01000000 /* Sparc was in supervisor mode */
#define IOMMU_AFSR_RESV 0x00f00000 /* Reserved, forced to 0x8 by hardware */
#define IOMMU_AFSR_RESV 0x00800000 /* Reserved, forced to 0x8 by
hardware */
#define IOMMU_AFSR_ME 0x00080000 /* Multiple errors occurred */
#define IOMMU_AFSR_RD 0x00040000 /* A read operation was in progress */
#define IOMMU_AFSR_FAV 0x00020000 /* IOMMU afar has valid contents */
......@@ -77,7 +81,8 @@ do { printf("IOMMU: " fmt , ##args); } while (0)
#define IOMMU_SBCFG1 (0x1014 >> 2) /* SBUS configration per-slot */
#define IOMMU_SBCFG2 (0x1018 >> 2) /* SBUS configration per-slot */
#define IOMMU_SBCFG3 (0x101c >> 2) /* SBUS configration per-slot */
#define IOMMU_SBCFG_SAB30 0x00010000 /* Phys-address bit 30 when bypass enabled */
#define IOMMU_SBCFG_SAB30 0x00010000 /* Phys-address bit 30 when
bypass enabled */
#define IOMMU_SBCFG_BA16 0x00000004 /* Slave supports 16 byte bursts */
#define IOMMU_SBCFG_BA8 0x00000002 /* Slave supports 8 byte bursts */
#define IOMMU_SBCFG_BYPASS 0x00000001 /* Bypass IOMMU, treat all addresses
......@@ -91,7 +96,8 @@ do { printf("IOMMU: " fmt , ##args); } while (0)
/* The format of an iopte in the page tables */
#define IOPTE_PAGE 0x07ffff00 /* Physical page number (PA[30:12]) */
#define IOPTE_CACHE 0x00000080 /* Cached (in vme IOCACHE or Viking/MXCC) */
#define IOPTE_CACHE 0x00000080 /* Cached (in vme IOCACHE or
Viking/MXCC) */
#define IOPTE_WRITE 0x00000004 /* Writeable */
#define IOPTE_VALID 0x00000002 /* IOPTE is valid */
#define IOPTE_WAZ 0x00000001 /* Write as zeros */
......@@ -122,7 +128,8 @@ static uint32_t iommu_mem_readw(void *opaque, target_phys_addr_t addr)
return 0;
}
static void iommu_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
static void iommu_mem_writew(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
IOMMUState *s = opaque;
target_phys_addr_t saddr;
......@@ -235,10 +242,11 @@ static target_phys_addr_t iommu_translate_pa(IOMMUState *s,
return pa;
}
static void iommu_bad_addr(IOMMUState *s, target_phys_addr_t addr, int is_write)
static void iommu_bad_addr(IOMMUState *s, target_phys_addr_t addr,
int is_write)
{
DPRINTF("bad addr " TARGET_FMT_plx "\n", addr);
s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | (8 << 20) |
s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | IOMMU_AFSR_RESV |
IOMMU_AFSR_FAV;
if (!is_write)
s->regs[IOMMU_AFSR] |= IOMMU_AFSR_RD;
......@@ -311,7 +319,7 @@ static void iommu_reset(void *opaque)
s->iostart = 0;
s->regs[IOMMU_CTRL] = s->version;
s->regs[IOMMU_ARBEN] = IOMMU_MID;
s->regs[IOMMU_AFSR] = 0x00800000;
s->regs[IOMMU_AFSR] = IOMMU_AFSR_RESV;
}
void *iommu_init(target_phys_addr_t addr, uint32_t version)
......@@ -326,7 +334,8 @@ void *iommu_init(target_phys_addr_t addr, uint32_t version)
s->addr = addr;
s->version = version;
iommu_io_memory = cpu_register_io_memory(0, iommu_mem_read, iommu_mem_write, s);
iommu_io_memory = cpu_register_io_memory(0, iommu_mem_read,
iommu_mem_write, s);
cpu_register_physical_memory(addr, IOMMU_NREGS * 4, iommu_io_memory);
register_savevm("iommu", addr, 2, iommu_save, iommu_load, s);
......@@ -334,4 +343,3 @@ void *iommu_init(target_phys_addr_t addr, uint32_t version)
iommu_reset(s);
return s;
}
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