| /* |
| * QEMU ESCC (Z8030/Z8530/Z85C30/SCC/ESCC) serial port emulation |
| * |
| * Copyright (c) 2003-2005 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| #include "hw.h" |
| #include "sysbus.h" |
| #include "escc.h" |
| #include "qemu-char.h" |
| #include "console.h" |
| |
| /* debug serial */ |
| //#define DEBUG_SERIAL |
| |
| /* debug keyboard */ |
| //#define DEBUG_KBD |
| |
| /* debug mouse */ |
| //#define DEBUG_MOUSE |
| |
| /* |
| * Chipset docs: |
| * "Z80C30/Z85C30/Z80230/Z85230/Z85233 SCC/ESCC User Manual", |
| * http://www.zilog.com/docs/serial/scc_escc_um.pdf |
| * |
| * On Sparc32 this is the serial port, mouse and keyboard part of chip STP2001 |
| * (Slave I/O), also produced as NCR89C105. See |
| * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt |
| * |
| * The serial ports implement full AMD AM8530 or Zilog Z8530 chips, |
| * mouse and keyboard ports don't implement all functions and they are |
| * only asynchronous. There is no DMA. |
| * |
| * Z85C30 is also used on PowerMacs. There are some small differences |
| * between Sparc version (sunzilog) and PowerMac (pmac): |
| * Offset between control and data registers |
| * There is some kind of lockup bug, but we can ignore it |
| * CTS is inverted |
| * DMA on pmac using DBDMA chip |
| * pmac can do IRDA and faster rates, sunzilog can only do 38400 |
| * pmac baud rate generator clock is 3.6864 MHz, sunzilog 4.9152 MHz |
| */ |
| |
| /* |
| * Modifications: |
| * 2006-Aug-10 Igor Kovalenko : Renamed KBDQueue to SERIOQueue, implemented |
| * serial mouse queue. |
| * Implemented serial mouse protocol. |
| * |
| * 2010-May-23 Artyom Tarasenko: Reworked IUS logic |
| */ |
| |
| #ifdef DEBUG_SERIAL |
| #define SER_DPRINTF(fmt, ...) \ |
| do { printf("SER: " fmt , ## __VA_ARGS__); } while (0) |
| #else |
| #define SER_DPRINTF(fmt, ...) |
| #endif |
| #ifdef DEBUG_KBD |
| #define KBD_DPRINTF(fmt, ...) \ |
| do { printf("KBD: " fmt , ## __VA_ARGS__); } while (0) |
| #else |
| #define KBD_DPRINTF(fmt, ...) |
| #endif |
| #ifdef DEBUG_MOUSE |
| #define MS_DPRINTF(fmt, ...) \ |
| do { printf("MSC: " fmt , ## __VA_ARGS__); } while (0) |
| #else |
| #define MS_DPRINTF(fmt, ...) |
| #endif |
| |
| typedef enum { |
| chn_a, chn_b, |
| } ChnID; |
| |
| #define CHN_C(s) ((s)->chn == chn_b? 'b' : 'a') |
| |
| typedef enum { |
| ser, kbd, mouse, |
| } ChnType; |
| |
| #define SERIO_QUEUE_SIZE 256 |
| |
| typedef struct { |
| uint8_t data[SERIO_QUEUE_SIZE]; |
| int rptr, wptr, count; |
| } SERIOQueue; |
| |
| #define SERIAL_REGS 16 |
| typedef struct ChannelState { |
| qemu_irq irq; |
| uint32_t reg; |
| uint32_t rxint, txint, rxint_under_svc, txint_under_svc; |
| ChnID chn; // this channel, A (base+4) or B (base+0) |
| ChnType type; |
| struct ChannelState *otherchn; |
| uint8_t rx, tx, wregs[SERIAL_REGS], rregs[SERIAL_REGS]; |
| SERIOQueue queue; |
| CharDriverState *chr; |
| int e0_mode, led_mode, caps_lock_mode, num_lock_mode; |
| int disabled; |
| int clock; |
| uint32_t vmstate_dummy; |
| } ChannelState; |
| |
| struct SerialState { |
| SysBusDevice busdev; |
| struct ChannelState chn[2]; |
| uint32_t it_shift; |
| int mmio_index; |
| uint32_t disabled; |
| uint32_t frequency; |
| }; |
| |
| #define SERIAL_CTRL 0 |
| #define SERIAL_DATA 1 |
| |
| #define W_CMD 0 |
| #define CMD_PTR_MASK 0x07 |
| #define CMD_CMD_MASK 0x38 |
| #define CMD_HI 0x08 |
| #define CMD_CLR_TXINT 0x28 |
| #define CMD_CLR_IUS 0x38 |
| #define W_INTR 1 |
| #define INTR_INTALL 0x01 |
| #define INTR_TXINT 0x02 |
| #define INTR_RXMODEMSK 0x18 |
| #define INTR_RXINT1ST 0x08 |
| #define INTR_RXINTALL 0x10 |
| #define W_IVEC 2 |
| #define W_RXCTRL 3 |
| #define RXCTRL_RXEN 0x01 |
| #define W_TXCTRL1 4 |
| #define TXCTRL1_PAREN 0x01 |
| #define TXCTRL1_PAREV 0x02 |
| #define TXCTRL1_1STOP 0x04 |
| #define TXCTRL1_1HSTOP 0x08 |
| #define TXCTRL1_2STOP 0x0c |
| #define TXCTRL1_STPMSK 0x0c |
| #define TXCTRL1_CLK1X 0x00 |
| #define TXCTRL1_CLK16X 0x40 |
| #define TXCTRL1_CLK32X 0x80 |
| #define TXCTRL1_CLK64X 0xc0 |
| #define TXCTRL1_CLKMSK 0xc0 |
| #define W_TXCTRL2 5 |
| #define TXCTRL2_TXEN 0x08 |
| #define TXCTRL2_BITMSK 0x60 |
| #define TXCTRL2_5BITS 0x00 |
| #define TXCTRL2_7BITS 0x20 |
| #define TXCTRL2_6BITS 0x40 |
| #define TXCTRL2_8BITS 0x60 |
| #define W_SYNC1 6 |
| #define W_SYNC2 7 |
| #define W_TXBUF 8 |
| #define W_MINTR 9 |
| #define MINTR_STATUSHI 0x10 |
| #define MINTR_RST_MASK 0xc0 |
| #define MINTR_RST_B 0x40 |
| #define MINTR_RST_A 0x80 |
| #define MINTR_RST_ALL 0xc0 |
| #define W_MISC1 10 |
| #define W_CLOCK 11 |
| #define CLOCK_TRXC 0x08 |
| #define W_BRGLO 12 |
| #define W_BRGHI 13 |
| #define W_MISC2 14 |
| #define MISC2_PLLDIS 0x30 |
| #define W_EXTINT 15 |
| #define EXTINT_DCD 0x08 |
| #define EXTINT_SYNCINT 0x10 |
| #define EXTINT_CTSINT 0x20 |
| #define EXTINT_TXUNDRN 0x40 |
| #define EXTINT_BRKINT 0x80 |
| |
| #define R_STATUS 0 |
| #define STATUS_RXAV 0x01 |
| #define STATUS_ZERO 0x02 |
| #define STATUS_TXEMPTY 0x04 |
| #define STATUS_DCD 0x08 |
| #define STATUS_SYNC 0x10 |
| #define STATUS_CTS 0x20 |
| #define STATUS_TXUNDRN 0x40 |
| #define STATUS_BRK 0x80 |
| #define R_SPEC 1 |
| #define SPEC_ALLSENT 0x01 |
| #define SPEC_BITS8 0x06 |
| #define R_IVEC 2 |
| #define IVEC_TXINTB 0x00 |
| #define IVEC_LONOINT 0x06 |
| #define IVEC_LORXINTA 0x0c |
| #define IVEC_LORXINTB 0x04 |
| #define IVEC_LOTXINTA 0x08 |
| #define IVEC_HINOINT 0x60 |
| #define IVEC_HIRXINTA 0x30 |
| #define IVEC_HIRXINTB 0x20 |
| #define IVEC_HITXINTA 0x10 |
| #define R_INTR 3 |
| #define INTR_EXTINTB 0x01 |
| #define INTR_TXINTB 0x02 |
| #define INTR_RXINTB 0x04 |
| #define INTR_EXTINTA 0x08 |
| #define INTR_TXINTA 0x10 |
| #define INTR_RXINTA 0x20 |
| #define R_IPEN 4 |
| #define R_TXCTRL1 5 |
| #define R_TXCTRL2 6 |
| #define R_BC 7 |
| #define R_RXBUF 8 |
| #define R_RXCTRL 9 |
| #define R_MISC 10 |
| #define R_MISC1 11 |
| #define R_BRGLO 12 |
| #define R_BRGHI 13 |
| #define R_MISC1I 14 |
| #define R_EXTINT 15 |
| |
| static void handle_kbd_command(ChannelState *s, int val); |
| static int serial_can_receive(void *opaque); |
| static void serial_receive_byte(ChannelState *s, int ch); |
| |
| static void clear_queue(void *opaque) |
| { |
| ChannelState *s = opaque; |
| SERIOQueue *q = &s->queue; |
| q->rptr = q->wptr = q->count = 0; |
| } |
| |
| static void put_queue(void *opaque, int b) |
| { |
| ChannelState *s = opaque; |
| SERIOQueue *q = &s->queue; |
| |
| SER_DPRINTF("channel %c put: 0x%02x\n", CHN_C(s), b); |
| if (q->count >= SERIO_QUEUE_SIZE) |
| return; |
| q->data[q->wptr] = b; |
| if (++q->wptr == SERIO_QUEUE_SIZE) |
| q->wptr = 0; |
| q->count++; |
| serial_receive_byte(s, 0); |
| } |
| |
| static uint32_t get_queue(void *opaque) |
| { |
| ChannelState *s = opaque; |
| SERIOQueue *q = &s->queue; |
| int val; |
| |
| if (q->count == 0) { |
| return 0; |
| } else { |
| val = q->data[q->rptr]; |
| if (++q->rptr == SERIO_QUEUE_SIZE) |
| q->rptr = 0; |
| q->count--; |
| } |
| SER_DPRINTF("channel %c get 0x%02x\n", CHN_C(s), val); |
| if (q->count > 0) |
| serial_receive_byte(s, 0); |
| return val; |
| } |
| |
| static int escc_update_irq_chn(ChannelState *s) |
| { |
| if ((((s->wregs[W_INTR] & INTR_TXINT) && (s->txint == 1)) || |
| // tx ints enabled, pending |
| ((((s->wregs[W_INTR] & INTR_RXMODEMSK) == INTR_RXINT1ST) || |
| ((s->wregs[W_INTR] & INTR_RXMODEMSK) == INTR_RXINTALL)) && |
| s->rxint == 1) || // rx ints enabled, pending |
| ((s->wregs[W_EXTINT] & EXTINT_BRKINT) && |
| (s->rregs[R_STATUS] & STATUS_BRK)))) { // break int e&p |
| return 1; |
| } |
| return 0; |
| } |
| |
| static void escc_update_irq(ChannelState *s) |
| { |
| int irq; |
| |
| irq = escc_update_irq_chn(s); |
| irq |= escc_update_irq_chn(s->otherchn); |
| |
| SER_DPRINTF("IRQ = %d\n", irq); |
| qemu_set_irq(s->irq, irq); |
| } |
| |
| static void escc_reset_chn(ChannelState *s) |
| { |
| int i; |
| |
| s->reg = 0; |
| for (i = 0; i < SERIAL_REGS; i++) { |
| s->rregs[i] = 0; |
| s->wregs[i] = 0; |
| } |
| s->wregs[W_TXCTRL1] = TXCTRL1_1STOP; // 1X divisor, 1 stop bit, no parity |
| s->wregs[W_MINTR] = MINTR_RST_ALL; |
| s->wregs[W_CLOCK] = CLOCK_TRXC; // Synch mode tx clock = TRxC |
| s->wregs[W_MISC2] = MISC2_PLLDIS; // PLL disabled |
| s->wregs[W_EXTINT] = EXTINT_DCD | EXTINT_SYNCINT | EXTINT_CTSINT | |
| EXTINT_TXUNDRN | EXTINT_BRKINT; // Enable most interrupts |
| if (s->disabled) |
| s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_DCD | STATUS_SYNC | |
| STATUS_CTS | STATUS_TXUNDRN; |
| else |
| s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_TXUNDRN; |
| s->rregs[R_SPEC] = SPEC_BITS8 | SPEC_ALLSENT; |
| |
| s->rx = s->tx = 0; |
| s->rxint = s->txint = 0; |
| s->rxint_under_svc = s->txint_under_svc = 0; |
| s->e0_mode = s->led_mode = s->caps_lock_mode = s->num_lock_mode = 0; |
| clear_queue(s); |
| } |
| |
| static void escc_reset(DeviceState *d) |
| { |
| SerialState *s = container_of(d, SerialState, busdev.qdev); |
| |
| escc_reset_chn(&s->chn[0]); |
| escc_reset_chn(&s->chn[1]); |
| } |
| |
| static inline void set_rxint(ChannelState *s) |
| { |
| s->rxint = 1; |
| /* XXX: missing daisy chainnig: chn_b rx should have a lower priority |
| than chn_a rx/tx/special_condition service*/ |
| s->rxint_under_svc = 1; |
| if (s->chn == chn_a) { |
| s->rregs[R_INTR] |= INTR_RXINTA; |
| if (s->wregs[W_MINTR] & MINTR_STATUSHI) |
| s->otherchn->rregs[R_IVEC] = IVEC_HIRXINTA; |
| else |
| s->otherchn->rregs[R_IVEC] = IVEC_LORXINTA; |
| } else { |
| s->otherchn->rregs[R_INTR] |= INTR_RXINTB; |
| if (s->wregs[W_MINTR] & MINTR_STATUSHI) |
| s->rregs[R_IVEC] = IVEC_HIRXINTB; |
| else |
| s->rregs[R_IVEC] = IVEC_LORXINTB; |
| } |
| escc_update_irq(s); |
| } |
| |
| static inline void set_txint(ChannelState *s) |
| { |
| s->txint = 1; |
| if (!s->rxint_under_svc) { |
| s->txint_under_svc = 1; |
| if (s->chn == chn_a) { |
| if (s->wregs[W_INTR] & INTR_TXINT) { |
| s->rregs[R_INTR] |= INTR_TXINTA; |
| } |
| if (s->wregs[W_MINTR] & MINTR_STATUSHI) |
| s->otherchn->rregs[R_IVEC] = IVEC_HITXINTA; |
| else |
| s->otherchn->rregs[R_IVEC] = IVEC_LOTXINTA; |
| } else { |
| s->rregs[R_IVEC] = IVEC_TXINTB; |
| if (s->wregs[W_INTR] & INTR_TXINT) { |
| s->otherchn->rregs[R_INTR] |= INTR_TXINTB; |
| } |
| } |
| escc_update_irq(s); |
| } |
| } |
| |
| static inline void clr_rxint(ChannelState *s) |
| { |
| s->rxint = 0; |
| s->rxint_under_svc = 0; |
| if (s->chn == chn_a) { |
| if (s->wregs[W_MINTR] & MINTR_STATUSHI) |
| s->otherchn->rregs[R_IVEC] = IVEC_HINOINT; |
| else |
| s->otherchn->rregs[R_IVEC] = IVEC_LONOINT; |
| s->rregs[R_INTR] &= ~INTR_RXINTA; |
| } else { |
| if (s->wregs[W_MINTR] & MINTR_STATUSHI) |
| s->rregs[R_IVEC] = IVEC_HINOINT; |
| else |
| s->rregs[R_IVEC] = IVEC_LONOINT; |
| s->otherchn->rregs[R_INTR] &= ~INTR_RXINTB; |
| } |
| if (s->txint) |
| set_txint(s); |
| escc_update_irq(s); |
| } |
| |
| static inline void clr_txint(ChannelState *s) |
| { |
| s->txint = 0; |
| s->txint_under_svc = 0; |
| if (s->chn == chn_a) { |
| if (s->wregs[W_MINTR] & MINTR_STATUSHI) |
| s->otherchn->rregs[R_IVEC] = IVEC_HINOINT; |
| else |
| s->otherchn->rregs[R_IVEC] = IVEC_LONOINT; |
| s->rregs[R_INTR] &= ~INTR_TXINTA; |
| } else { |
| s->otherchn->rregs[R_INTR] &= ~INTR_TXINTB; |
| if (s->wregs[W_MINTR] & MINTR_STATUSHI) |
| s->rregs[R_IVEC] = IVEC_HINOINT; |
| else |
| s->rregs[R_IVEC] = IVEC_LONOINT; |
| s->otherchn->rregs[R_INTR] &= ~INTR_TXINTB; |
| } |
| if (s->rxint) |
| set_rxint(s); |
| escc_update_irq(s); |
| } |
| |
| static void escc_update_parameters(ChannelState *s) |
| { |
| int speed, parity, data_bits, stop_bits; |
| QEMUSerialSetParams ssp; |
| |
| if (!s->chr || s->type != ser) |
| return; |
| |
| if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREN) { |
| if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREV) |
| parity = 'E'; |
| else |
| parity = 'O'; |
| } else { |
| parity = 'N'; |
| } |
| if ((s->wregs[W_TXCTRL1] & TXCTRL1_STPMSK) == TXCTRL1_2STOP) |
| stop_bits = 2; |
| else |
| stop_bits = 1; |
| switch (s->wregs[W_TXCTRL2] & TXCTRL2_BITMSK) { |
| case TXCTRL2_5BITS: |
| data_bits = 5; |
| break; |
| case TXCTRL2_7BITS: |
| data_bits = 7; |
| break; |
| case TXCTRL2_6BITS: |
| data_bits = 6; |
| break; |
| default: |
| case TXCTRL2_8BITS: |
| data_bits = 8; |
| break; |
| } |
| speed = s->clock / ((s->wregs[W_BRGLO] | (s->wregs[W_BRGHI] << 8)) + 2); |
| switch (s->wregs[W_TXCTRL1] & TXCTRL1_CLKMSK) { |
| case TXCTRL1_CLK1X: |
| break; |
| case TXCTRL1_CLK16X: |
| speed /= 16; |
| break; |
| case TXCTRL1_CLK32X: |
| speed /= 32; |
| break; |
| default: |
| case TXCTRL1_CLK64X: |
| speed /= 64; |
| break; |
| } |
| ssp.speed = speed; |
| ssp.parity = parity; |
| ssp.data_bits = data_bits; |
| ssp.stop_bits = stop_bits; |
| SER_DPRINTF("channel %c: speed=%d parity=%c data=%d stop=%d\n", CHN_C(s), |
| speed, parity, data_bits, stop_bits); |
| qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp); |
| } |
| |
| static void escc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
| { |
| SerialState *serial = opaque; |
| ChannelState *s; |
| uint32_t saddr; |
| int newreg, channel; |
| |
| val &= 0xff; |
| saddr = (addr >> serial->it_shift) & 1; |
| channel = (addr >> (serial->it_shift + 1)) & 1; |
| s = &serial->chn[channel]; |
| switch (saddr) { |
| case SERIAL_CTRL: |
| SER_DPRINTF("Write channel %c, reg[%d] = %2.2x\n", CHN_C(s), s->reg, |
| val & 0xff); |
| newreg = 0; |
| switch (s->reg) { |
| case W_CMD: |
| newreg = val & CMD_PTR_MASK; |
| val &= CMD_CMD_MASK; |
| switch (val) { |
| case CMD_HI: |
| newreg |= CMD_HI; |
| break; |
| case CMD_CLR_TXINT: |
| clr_txint(s); |
| break; |
| case CMD_CLR_IUS: |
| if (s->rxint_under_svc) { |
| s->rxint_under_svc = 0; |
| if (s->txint) { |
| set_txint(s); |
| } |
| } else if (s->txint_under_svc) { |
| s->txint_under_svc = 0; |
| } |
| escc_update_irq(s); |
| break; |
| default: |
| break; |
| } |
| break; |
| case W_INTR ... W_RXCTRL: |
| case W_SYNC1 ... W_TXBUF: |
| case W_MISC1 ... W_CLOCK: |
| case W_MISC2 ... W_EXTINT: |
| s->wregs[s->reg] = val; |
| break; |
| case W_TXCTRL1: |
| case W_TXCTRL2: |
| s->wregs[s->reg] = val; |
| escc_update_parameters(s); |
| break; |
| case W_BRGLO: |
| case W_BRGHI: |
| s->wregs[s->reg] = val; |
| s->rregs[s->reg] = val; |
| escc_update_parameters(s); |
| break; |
| case W_MINTR: |
| switch (val & MINTR_RST_MASK) { |
| case 0: |
| default: |
| break; |
| case MINTR_RST_B: |
| escc_reset_chn(&serial->chn[0]); |
| return; |
| case MINTR_RST_A: |
| escc_reset_chn(&serial->chn[1]); |
| return; |
| case MINTR_RST_ALL: |
| escc_reset(&serial->busdev.qdev); |
| return; |
| } |
| break; |
| default: |
| break; |
| } |
| if (s->reg == 0) |
| s->reg = newreg; |
| else |
| s->reg = 0; |
| break; |
| case SERIAL_DATA: |
| SER_DPRINTF("Write channel %c, ch %d\n", CHN_C(s), val); |
| s->tx = val; |
| if (s->wregs[W_TXCTRL2] & TXCTRL2_TXEN) { // tx enabled |
| if (s->chr) |
| qemu_chr_write(s->chr, &s->tx, 1); |
| else if (s->type == kbd && !s->disabled) { |
| handle_kbd_command(s, val); |
| } |
| } |
| s->rregs[R_STATUS] |= STATUS_TXEMPTY; // Tx buffer empty |
| s->rregs[R_SPEC] |= SPEC_ALLSENT; // All sent |
| set_txint(s); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static uint32_t escc_mem_readb(void *opaque, target_phys_addr_t addr) |
| { |
| SerialState *serial = opaque; |
| ChannelState *s; |
| uint32_t saddr; |
| uint32_t ret; |
| int channel; |
| |
| saddr = (addr >> serial->it_shift) & 1; |
| channel = (addr >> (serial->it_shift + 1)) & 1; |
| s = &serial->chn[channel]; |
| switch (saddr) { |
| case SERIAL_CTRL: |
| SER_DPRINTF("Read channel %c, reg[%d] = %2.2x\n", CHN_C(s), s->reg, |
| s->rregs[s->reg]); |
| ret = s->rregs[s->reg]; |
| s->reg = 0; |
| return ret; |
| case SERIAL_DATA: |
| s->rregs[R_STATUS] &= ~STATUS_RXAV; |
| clr_rxint(s); |
| if (s->type == kbd || s->type == mouse) |
| ret = get_queue(s); |
| else |
| ret = s->rx; |
| SER_DPRINTF("Read channel %c, ch %d\n", CHN_C(s), ret); |
| if (s->chr) |
| qemu_chr_accept_input(s->chr); |
| return ret; |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| static int serial_can_receive(void *opaque) |
| { |
| ChannelState *s = opaque; |
| int ret; |
| |
| if (((s->wregs[W_RXCTRL] & RXCTRL_RXEN) == 0) // Rx not enabled |
| || ((s->rregs[R_STATUS] & STATUS_RXAV) == STATUS_RXAV)) |
| // char already available |
| ret = 0; |
| else |
| ret = 1; |
| return ret; |
| } |
| |
| static void serial_receive_byte(ChannelState *s, int ch) |
| { |
| SER_DPRINTF("channel %c put ch %d\n", CHN_C(s), ch); |
| s->rregs[R_STATUS] |= STATUS_RXAV; |
| s->rx = ch; |
| set_rxint(s); |
| } |
| |
| static void serial_receive_break(ChannelState *s) |
| { |
| s->rregs[R_STATUS] |= STATUS_BRK; |
| escc_update_irq(s); |
| } |
| |
| static void serial_receive1(void *opaque, const uint8_t *buf, int size) |
| { |
| ChannelState *s = opaque; |
| serial_receive_byte(s, buf[0]); |
| } |
| |
| static void serial_event(void *opaque, int event) |
| { |
| ChannelState *s = opaque; |
| if (event == CHR_EVENT_BREAK) |
| serial_receive_break(s); |
| } |
| |
| static CPUReadMemoryFunc * const escc_mem_read[3] = { |
| escc_mem_readb, |
| NULL, |
| NULL, |
| }; |
| |
| static CPUWriteMemoryFunc * const escc_mem_write[3] = { |
| escc_mem_writeb, |
| NULL, |
| NULL, |
| }; |
| |
| static const VMStateDescription vmstate_escc_chn = { |
| .name ="escc_chn", |
| .version_id = 2, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_UINT32(vmstate_dummy, ChannelState), |
| VMSTATE_UINT32(reg, ChannelState), |
| VMSTATE_UINT32(rxint, ChannelState), |
| VMSTATE_UINT32(txint, ChannelState), |
| VMSTATE_UINT32(rxint_under_svc, ChannelState), |
| VMSTATE_UINT32(txint_under_svc, ChannelState), |
| VMSTATE_UINT8(rx, ChannelState), |
| VMSTATE_UINT8(tx, ChannelState), |
| VMSTATE_BUFFER(wregs, ChannelState), |
| VMSTATE_BUFFER(rregs, ChannelState), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static const VMStateDescription vmstate_escc = { |
| .name ="escc", |
| .version_id = 2, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_STRUCT_ARRAY(chn, SerialState, 2, 2, vmstate_escc_chn, |
| ChannelState), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| int escc_init(target_phys_addr_t base, qemu_irq irqA, qemu_irq irqB, |
| CharDriverState *chrA, CharDriverState *chrB, |
| int clock, int it_shift) |
| { |
| DeviceState *dev; |
| SysBusDevice *s; |
| SerialState *d; |
| |
| dev = qdev_create(NULL, "escc"); |
| qdev_prop_set_uint32(dev, "disabled", 0); |
| qdev_prop_set_uint32(dev, "frequency", clock); |
| qdev_prop_set_uint32(dev, "it_shift", it_shift); |
| qdev_prop_set_chr(dev, "chrB", chrB); |
| qdev_prop_set_chr(dev, "chrA", chrA); |
| qdev_prop_set_uint32(dev, "chnBtype", ser); |
| qdev_prop_set_uint32(dev, "chnAtype", ser); |
| qdev_init_nofail(dev); |
| s = sysbus_from_qdev(dev); |
| sysbus_connect_irq(s, 0, irqB); |
| sysbus_connect_irq(s, 1, irqA); |
| if (base) { |
| sysbus_mmio_map(s, 0, base); |
| } |
| |
| d = FROM_SYSBUS(SerialState, s); |
| return d->mmio_index; |
| } |
| |
| static const uint8_t keycodes[128] = { |
| 127, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 53, |
| 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 89, 76, 77, 78, |
| 79, 80, 81, 82, 83, 84, 85, 86, 87, 42, 99, 88, 100, 101, 102, 103, |
| 104, 105, 106, 107, 108, 109, 110, 47, 19, 121, 119, 5, 6, 8, 10, 12, |
| 14, 16, 17, 18, 7, 98, 23, 68, 69, 70, 71, 91, 92, 93, 125, 112, |
| 113, 114, 94, 50, 0, 0, 124, 9, 11, 0, 0, 0, 0, 0, 0, 0, |
| 90, 0, 46, 22, 13, 111, 52, 20, 96, 24, 28, 74, 27, 123, 44, 66, |
| 0, 45, 2, 4, 48, 0, 0, 21, 0, 0, 0, 0, 0, 120, 122, 67, |
| }; |
| |
| static const uint8_t e0_keycodes[128] = { |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 90, 76, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 109, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 68, 69, 70, 0, 91, 0, 93, 0, 112, |
| 113, 114, 94, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 1, 3, 25, 26, 49, 52, 72, 73, 97, 99, 111, 118, 120, 122, 67, 0, |
| }; |
| |
| static void sunkbd_event(void *opaque, int ch) |
| { |
| ChannelState *s = opaque; |
| int release = ch & 0x80; |
| |
| KBD_DPRINTF("Untranslated keycode %2.2x (%s)\n", ch, release? "release" : |
| "press"); |
| switch (ch) { |
| case 58: // Caps lock press |
| s->caps_lock_mode ^= 1; |
| if (s->caps_lock_mode == 2) |
| return; // Drop second press |
| break; |
| case 69: // Num lock press |
| s->num_lock_mode ^= 1; |
| if (s->num_lock_mode == 2) |
| return; // Drop second press |
| break; |
| case 186: // Caps lock release |
| s->caps_lock_mode ^= 2; |
| if (s->caps_lock_mode == 3) |
| return; // Drop first release |
| break; |
| case 197: // Num lock release |
| s->num_lock_mode ^= 2; |
| if (s->num_lock_mode == 3) |
| return; // Drop first release |
| break; |
| case 0xe0: |
| s->e0_mode = 1; |
| return; |
| default: |
| break; |
| } |
| if (s->e0_mode) { |
| s->e0_mode = 0; |
| ch = e0_keycodes[ch & 0x7f]; |
| } else { |
| ch = keycodes[ch & 0x7f]; |
| } |
| KBD_DPRINTF("Translated keycode %2.2x\n", ch); |
| put_queue(s, ch | release); |
| } |
| |
| static void handle_kbd_command(ChannelState *s, int val) |
| { |
| KBD_DPRINTF("Command %d\n", val); |
| if (s->led_mode) { // Ignore led byte |
| s->led_mode = 0; |
| return; |
| } |
| switch (val) { |
| case 1: // Reset, return type code |
| clear_queue(s); |
| put_queue(s, 0xff); |
| put_queue(s, 4); // Type 4 |
| put_queue(s, 0x7f); |
| break; |
| case 0xe: // Set leds |
| s->led_mode = 1; |
| break; |
| case 7: // Query layout |
| case 0xf: |
| clear_queue(s); |
| put_queue(s, 0xfe); |
| put_queue(s, 0); // XXX, layout? |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void sunmouse_event(void *opaque, |
| int dx, int dy, int dz, int buttons_state) |
| { |
| ChannelState *s = opaque; |
| int ch; |
| |
| MS_DPRINTF("dx=%d dy=%d buttons=%01x\n", dx, dy, buttons_state); |
| |
| ch = 0x80 | 0x7; /* protocol start byte, no buttons pressed */ |
| |
| if (buttons_state & MOUSE_EVENT_LBUTTON) |
| ch ^= 0x4; |
| if (buttons_state & MOUSE_EVENT_MBUTTON) |
| ch ^= 0x2; |
| if (buttons_state & MOUSE_EVENT_RBUTTON) |
| ch ^= 0x1; |
| |
| put_queue(s, ch); |
| |
| ch = dx; |
| |
| if (ch > 127) |
| ch = 127; |
| else if (ch < -127) |
| ch = -127; |
| |
| put_queue(s, ch & 0xff); |
| |
| ch = -dy; |
| |
| if (ch > 127) |
| ch = 127; |
| else if (ch < -127) |
| ch = -127; |
| |
| put_queue(s, ch & 0xff); |
| |
| // MSC protocol specify two extra motion bytes |
| |
| put_queue(s, 0); |
| put_queue(s, 0); |
| } |
| |
| void slavio_serial_ms_kbd_init(target_phys_addr_t base, qemu_irq irq, |
| int disabled, int clock, int it_shift) |
| { |
| DeviceState *dev; |
| SysBusDevice *s; |
| |
| dev = qdev_create(NULL, "escc"); |
| qdev_prop_set_uint32(dev, "disabled", disabled); |
| qdev_prop_set_uint32(dev, "frequency", clock); |
| qdev_prop_set_uint32(dev, "it_shift", it_shift); |
| qdev_prop_set_chr(dev, "chrB", NULL); |
| qdev_prop_set_chr(dev, "chrA", NULL); |
| qdev_prop_set_uint32(dev, "chnBtype", mouse); |
| qdev_prop_set_uint32(dev, "chnAtype", kbd); |
| qdev_init_nofail(dev); |
| s = sysbus_from_qdev(dev); |
| sysbus_connect_irq(s, 0, irq); |
| sysbus_connect_irq(s, 1, irq); |
| sysbus_mmio_map(s, 0, base); |
| } |
| |
| static int escc_init1(SysBusDevice *dev) |
| { |
| SerialState *s = FROM_SYSBUS(SerialState, dev); |
| int io; |
| unsigned int i; |
| |
| s->chn[0].disabled = s->disabled; |
| s->chn[1].disabled = s->disabled; |
| for (i = 0; i < 2; i++) { |
| sysbus_init_irq(dev, &s->chn[i].irq); |
| s->chn[i].chn = 1 - i; |
| s->chn[i].clock = s->frequency / 2; |
| if (s->chn[i].chr) { |
| qemu_chr_add_handlers(s->chn[i].chr, serial_can_receive, |
| serial_receive1, serial_event, &s->chn[i]); |
| } |
| } |
| s->chn[0].otherchn = &s->chn[1]; |
| s->chn[1].otherchn = &s->chn[0]; |
| |
| io = cpu_register_io_memory(escc_mem_read, escc_mem_write, s, |
| DEVICE_NATIVE_ENDIAN); |
| sysbus_init_mmio(dev, ESCC_SIZE << s->it_shift, io); |
| s->mmio_index = io; |
| |
| if (s->chn[0].type == mouse) { |
| qemu_add_mouse_event_handler(sunmouse_event, &s->chn[0], 0, |
| "QEMU Sun Mouse"); |
| } |
| if (s->chn[1].type == kbd) { |
| qemu_add_kbd_event_handler(sunkbd_event, &s->chn[1]); |
| } |
| |
| return 0; |
| } |
| |
| static SysBusDeviceInfo escc_info = { |
| .init = escc_init1, |
| .qdev.name = "escc", |
| .qdev.size = sizeof(SerialState), |
| .qdev.vmsd = &vmstate_escc, |
| .qdev.reset = escc_reset, |
| .qdev.props = (Property[]) { |
| DEFINE_PROP_UINT32("frequency", SerialState, frequency, 0), |
| DEFINE_PROP_UINT32("it_shift", SerialState, it_shift, 0), |
| DEFINE_PROP_UINT32("disabled", SerialState, disabled, 0), |
| DEFINE_PROP_UINT32("disabled", SerialState, disabled, 0), |
| DEFINE_PROP_UINT32("chnBtype", SerialState, chn[0].type, 0), |
| DEFINE_PROP_UINT32("chnAtype", SerialState, chn[1].type, 0), |
| DEFINE_PROP_CHR("chrB", SerialState, chn[0].chr), |
| DEFINE_PROP_CHR("chrA", SerialState, chn[1].chr), |
| DEFINE_PROP_END_OF_LIST(), |
| } |
| }; |
| |
| static void escc_register_devices(void) |
| { |
| sysbus_register_withprop(&escc_info); |
| } |
| |
| device_init(escc_register_devices) |
