940 lines
25 KiB
C
940 lines
25 KiB
C
/*
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* QEMU ESCC (Z8030/Z8530/Z85C30/SCC/ESCC) serial port emulation
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "escc.h"
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#include "qemu-char.h"
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#include "console.h"
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/* debug serial */
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//#define DEBUG_SERIAL
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/* debug keyboard */
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//#define DEBUG_KBD
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/* debug mouse */
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//#define DEBUG_MOUSE
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/*
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* On Sparc32 this is the serial port, mouse and keyboard part of chip STP2001
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* (Slave I/O), also produced as NCR89C105. See
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* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
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*
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* The serial ports implement full AMD AM8530 or Zilog Z8530 chips,
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* mouse and keyboard ports don't implement all functions and they are
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* only asynchronous. There is no DMA.
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*
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* Z85C30 is also used on PowerMacs. There are some small differences
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* between Sparc version (sunzilog) and PowerMac (pmac):
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* Offset between control and data registers
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* There is some kind of lockup bug, but we can ignore it
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* CTS is inverted
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* DMA on pmac using DBDMA chip
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* pmac can do IRDA and faster rates, sunzilog can only do 38400
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* pmac baud rate generator clock is 3.6864 MHz, sunzilog 4.9152 MHz
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*/
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/*
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* Modifications:
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* 2006-Aug-10 Igor Kovalenko : Renamed KBDQueue to SERIOQueue, implemented
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* serial mouse queue.
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* Implemented serial mouse protocol.
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*/
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#ifdef DEBUG_SERIAL
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#define SER_DPRINTF(fmt, args...) \
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do { printf("SER: " fmt , ##args); } while (0)
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#else
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#define SER_DPRINTF(fmt, args...)
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#endif
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#ifdef DEBUG_KBD
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#define KBD_DPRINTF(fmt, args...) \
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do { printf("KBD: " fmt , ##args); } while (0)
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#else
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#define KBD_DPRINTF(fmt, args...)
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#endif
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#ifdef DEBUG_MOUSE
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#define MS_DPRINTF(fmt, args...) \
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do { printf("MSC: " fmt , ##args); } while (0)
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#else
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#define MS_DPRINTF(fmt, args...)
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#endif
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typedef enum {
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chn_a, chn_b,
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} chn_id_t;
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#define CHN_C(s) ((s)->chn == chn_b? 'b' : 'a')
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typedef enum {
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ser, kbd, mouse,
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} chn_type_t;
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#define SERIO_QUEUE_SIZE 256
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typedef struct {
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uint8_t data[SERIO_QUEUE_SIZE];
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int rptr, wptr, count;
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} SERIOQueue;
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#define SERIAL_REGS 16
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typedef struct ChannelState {
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qemu_irq irq;
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uint32_t reg;
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uint32_t rxint, txint, rxint_under_svc, txint_under_svc;
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chn_id_t chn; // this channel, A (base+4) or B (base+0)
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chn_type_t type;
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struct ChannelState *otherchn;
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uint8_t rx, tx, wregs[SERIAL_REGS], rregs[SERIAL_REGS];
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SERIOQueue queue;
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CharDriverState *chr;
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int e0_mode, led_mode, caps_lock_mode, num_lock_mode;
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int disabled;
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int clock;
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} ChannelState;
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struct SerialState {
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struct ChannelState chn[2];
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int it_shift;
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};
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#define SERIAL_CTRL 0
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#define SERIAL_DATA 1
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#define W_CMD 0
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#define CMD_PTR_MASK 0x07
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#define CMD_CMD_MASK 0x38
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#define CMD_HI 0x08
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#define CMD_CLR_TXINT 0x28
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#define CMD_CLR_IUS 0x38
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#define W_INTR 1
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#define INTR_INTALL 0x01
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#define INTR_TXINT 0x02
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#define INTR_RXMODEMSK 0x18
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#define INTR_RXINT1ST 0x08
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#define INTR_RXINTALL 0x10
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#define W_IVEC 2
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#define W_RXCTRL 3
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#define RXCTRL_RXEN 0x01
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#define W_TXCTRL1 4
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#define TXCTRL1_PAREN 0x01
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#define TXCTRL1_PAREV 0x02
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#define TXCTRL1_1STOP 0x04
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#define TXCTRL1_1HSTOP 0x08
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#define TXCTRL1_2STOP 0x0c
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#define TXCTRL1_STPMSK 0x0c
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#define TXCTRL1_CLK1X 0x00
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#define TXCTRL1_CLK16X 0x40
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#define TXCTRL1_CLK32X 0x80
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#define TXCTRL1_CLK64X 0xc0
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#define TXCTRL1_CLKMSK 0xc0
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#define W_TXCTRL2 5
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#define TXCTRL2_TXEN 0x08
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#define TXCTRL2_BITMSK 0x60
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#define TXCTRL2_5BITS 0x00
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#define TXCTRL2_7BITS 0x20
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#define TXCTRL2_6BITS 0x40
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#define TXCTRL2_8BITS 0x60
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#define W_SYNC1 6
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#define W_SYNC2 7
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#define W_TXBUF 8
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#define W_MINTR 9
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#define MINTR_STATUSHI 0x10
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#define MINTR_RST_MASK 0xc0
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#define MINTR_RST_B 0x40
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#define MINTR_RST_A 0x80
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#define MINTR_RST_ALL 0xc0
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#define W_MISC1 10
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#define W_CLOCK 11
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#define CLOCK_TRXC 0x08
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#define W_BRGLO 12
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#define W_BRGHI 13
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#define W_MISC2 14
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#define MISC2_PLLDIS 0x30
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#define W_EXTINT 15
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#define EXTINT_DCD 0x08
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#define EXTINT_SYNCINT 0x10
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#define EXTINT_CTSINT 0x20
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#define EXTINT_TXUNDRN 0x40
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#define EXTINT_BRKINT 0x80
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#define R_STATUS 0
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#define STATUS_RXAV 0x01
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#define STATUS_ZERO 0x02
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#define STATUS_TXEMPTY 0x04
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#define STATUS_DCD 0x08
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#define STATUS_SYNC 0x10
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#define STATUS_CTS 0x20
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#define STATUS_TXUNDRN 0x40
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#define STATUS_BRK 0x80
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#define R_SPEC 1
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#define SPEC_ALLSENT 0x01
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#define SPEC_BITS8 0x06
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#define R_IVEC 2
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#define IVEC_TXINTB 0x00
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#define IVEC_LONOINT 0x06
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#define IVEC_LORXINTA 0x0c
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#define IVEC_LORXINTB 0x04
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#define IVEC_LOTXINTA 0x08
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#define IVEC_HINOINT 0x60
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#define IVEC_HIRXINTA 0x30
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#define IVEC_HIRXINTB 0x20
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#define IVEC_HITXINTA 0x10
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#define R_INTR 3
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#define INTR_EXTINTB 0x01
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#define INTR_TXINTB 0x02
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#define INTR_RXINTB 0x04
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#define INTR_EXTINTA 0x08
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#define INTR_TXINTA 0x10
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#define INTR_RXINTA 0x20
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#define R_IPEN 4
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#define R_TXCTRL1 5
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#define R_TXCTRL2 6
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#define R_BC 7
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#define R_RXBUF 8
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#define R_RXCTRL 9
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#define R_MISC 10
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#define R_MISC1 11
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#define R_BRGLO 12
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#define R_BRGHI 13
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#define R_MISC1I 14
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#define R_EXTINT 15
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static void handle_kbd_command(ChannelState *s, int val);
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static int serial_can_receive(void *opaque);
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static void serial_receive_byte(ChannelState *s, int ch);
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static void clear_queue(void *opaque)
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{
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ChannelState *s = opaque;
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SERIOQueue *q = &s->queue;
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q->rptr = q->wptr = q->count = 0;
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}
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static void put_queue(void *opaque, int b)
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{
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ChannelState *s = opaque;
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SERIOQueue *q = &s->queue;
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SER_DPRINTF("channel %c put: 0x%02x\n", CHN_C(s), b);
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if (q->count >= SERIO_QUEUE_SIZE)
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return;
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q->data[q->wptr] = b;
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if (++q->wptr == SERIO_QUEUE_SIZE)
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q->wptr = 0;
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q->count++;
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serial_receive_byte(s, 0);
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}
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static uint32_t get_queue(void *opaque)
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{
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ChannelState *s = opaque;
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SERIOQueue *q = &s->queue;
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int val;
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if (q->count == 0) {
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return 0;
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} else {
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val = q->data[q->rptr];
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if (++q->rptr == SERIO_QUEUE_SIZE)
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q->rptr = 0;
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q->count--;
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}
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SER_DPRINTF("channel %c get 0x%02x\n", CHN_C(s), val);
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if (q->count > 0)
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serial_receive_byte(s, 0);
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return val;
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}
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static int escc_update_irq_chn(ChannelState *s)
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{
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if ((((s->wregs[W_INTR] & INTR_TXINT) && s->txint == 1) ||
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// tx ints enabled, pending
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((((s->wregs[W_INTR] & INTR_RXMODEMSK) == INTR_RXINT1ST) ||
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((s->wregs[W_INTR] & INTR_RXMODEMSK) == INTR_RXINTALL)) &&
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s->rxint == 1) || // rx ints enabled, pending
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((s->wregs[W_EXTINT] & EXTINT_BRKINT) &&
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(s->rregs[R_STATUS] & STATUS_BRK)))) { // break int e&p
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return 1;
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}
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return 0;
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}
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static void escc_update_irq(ChannelState *s)
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{
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int irq;
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irq = escc_update_irq_chn(s);
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irq |= escc_update_irq_chn(s->otherchn);
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SER_DPRINTF("IRQ = %d\n", irq);
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qemu_set_irq(s->irq, irq);
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}
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static void escc_reset_chn(ChannelState *s)
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{
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int i;
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s->reg = 0;
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for (i = 0; i < SERIAL_REGS; i++) {
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s->rregs[i] = 0;
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s->wregs[i] = 0;
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}
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s->wregs[W_TXCTRL1] = TXCTRL1_1STOP; // 1X divisor, 1 stop bit, no parity
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s->wregs[W_MINTR] = MINTR_RST_ALL;
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s->wregs[W_CLOCK] = CLOCK_TRXC; // Synch mode tx clock = TRxC
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s->wregs[W_MISC2] = MISC2_PLLDIS; // PLL disabled
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s->wregs[W_EXTINT] = EXTINT_DCD | EXTINT_SYNCINT | EXTINT_CTSINT |
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EXTINT_TXUNDRN | EXTINT_BRKINT; // Enable most interrupts
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if (s->disabled)
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s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_DCD | STATUS_SYNC |
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STATUS_CTS | STATUS_TXUNDRN;
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else
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s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_TXUNDRN;
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s->rregs[R_SPEC] = SPEC_BITS8 | SPEC_ALLSENT;
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s->rx = s->tx = 0;
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s->rxint = s->txint = 0;
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s->rxint_under_svc = s->txint_under_svc = 0;
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s->e0_mode = s->led_mode = s->caps_lock_mode = s->num_lock_mode = 0;
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clear_queue(s);
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}
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static void escc_reset(void *opaque)
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{
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SerialState *s = opaque;
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escc_reset_chn(&s->chn[0]);
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escc_reset_chn(&s->chn[1]);
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}
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static inline void set_rxint(ChannelState *s)
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{
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s->rxint = 1;
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if (!s->txint_under_svc) {
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s->rxint_under_svc = 1;
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if (s->chn == chn_a) {
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if (s->wregs[W_MINTR] & MINTR_STATUSHI)
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s->otherchn->rregs[R_IVEC] = IVEC_HIRXINTA;
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else
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s->otherchn->rregs[R_IVEC] = IVEC_LORXINTA;
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} else {
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if (s->wregs[W_MINTR] & MINTR_STATUSHI)
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s->rregs[R_IVEC] = IVEC_HIRXINTB;
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else
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s->rregs[R_IVEC] = IVEC_LORXINTB;
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}
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}
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if (s->chn == chn_a)
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s->rregs[R_INTR] |= INTR_RXINTA;
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else
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s->otherchn->rregs[R_INTR] |= INTR_RXINTB;
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escc_update_irq(s);
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}
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static inline void set_txint(ChannelState *s)
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{
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s->txint = 1;
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if (!s->rxint_under_svc) {
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s->txint_under_svc = 1;
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if (s->chn == chn_a) {
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if (s->wregs[W_MINTR] & MINTR_STATUSHI)
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s->otherchn->rregs[R_IVEC] = IVEC_HITXINTA;
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else
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s->otherchn->rregs[R_IVEC] = IVEC_LOTXINTA;
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} else {
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s->rregs[R_IVEC] = IVEC_TXINTB;
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}
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}
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if (s->chn == chn_a)
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s->rregs[R_INTR] |= INTR_TXINTA;
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else
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s->otherchn->rregs[R_INTR] |= INTR_TXINTB;
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escc_update_irq(s);
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}
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static inline void clr_rxint(ChannelState *s)
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{
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s->rxint = 0;
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s->rxint_under_svc = 0;
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if (s->chn == chn_a) {
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if (s->wregs[W_MINTR] & MINTR_STATUSHI)
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s->otherchn->rregs[R_IVEC] = IVEC_HINOINT;
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else
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s->otherchn->rregs[R_IVEC] = IVEC_LONOINT;
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s->rregs[R_INTR] &= ~INTR_RXINTA;
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} else {
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if (s->wregs[W_MINTR] & MINTR_STATUSHI)
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s->rregs[R_IVEC] = IVEC_HINOINT;
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else
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s->rregs[R_IVEC] = IVEC_LONOINT;
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s->otherchn->rregs[R_INTR] &= ~INTR_RXINTB;
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}
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if (s->txint)
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set_txint(s);
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escc_update_irq(s);
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}
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static inline void clr_txint(ChannelState *s)
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{
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s->txint = 0;
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s->txint_under_svc = 0;
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if (s->chn == chn_a) {
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if (s->wregs[W_MINTR] & MINTR_STATUSHI)
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s->otherchn->rregs[R_IVEC] = IVEC_HINOINT;
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else
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s->otherchn->rregs[R_IVEC] = IVEC_LONOINT;
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s->rregs[R_INTR] &= ~INTR_TXINTA;
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} else {
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if (s->wregs[W_MINTR] & MINTR_STATUSHI)
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s->rregs[R_IVEC] = IVEC_HINOINT;
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else
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s->rregs[R_IVEC] = IVEC_LONOINT;
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s->otherchn->rregs[R_INTR] &= ~INTR_TXINTB;
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}
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if (s->rxint)
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set_rxint(s);
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escc_update_irq(s);
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}
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static void escc_update_parameters(ChannelState *s)
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{
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int speed, parity, data_bits, stop_bits;
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QEMUSerialSetParams ssp;
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if (!s->chr || s->type != ser)
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return;
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if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREN) {
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if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREV)
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parity = 'E';
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else
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parity = 'O';
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} else {
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parity = 'N';
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}
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if ((s->wregs[W_TXCTRL1] & TXCTRL1_STPMSK) == TXCTRL1_2STOP)
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stop_bits = 2;
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else
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stop_bits = 1;
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switch (s->wregs[W_TXCTRL2] & TXCTRL2_BITMSK) {
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case TXCTRL2_5BITS:
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data_bits = 5;
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break;
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case TXCTRL2_7BITS:
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data_bits = 7;
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break;
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case TXCTRL2_6BITS:
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data_bits = 6;
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break;
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default:
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case TXCTRL2_8BITS:
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data_bits = 8;
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break;
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}
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speed = s->clock / ((s->wregs[W_BRGLO] | (s->wregs[W_BRGHI] << 8)) + 2);
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switch (s->wregs[W_TXCTRL1] & TXCTRL1_CLKMSK) {
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case TXCTRL1_CLK1X:
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break;
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case TXCTRL1_CLK16X:
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speed /= 16;
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break;
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case TXCTRL1_CLK32X:
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speed /= 32;
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break;
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default:
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case TXCTRL1_CLK64X:
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speed /= 64;
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break;
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}
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ssp.speed = speed;
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ssp.parity = parity;
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ssp.data_bits = data_bits;
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ssp.stop_bits = stop_bits;
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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)
|
|
clr_rxint(s);
|
|
else if (s->txint_under_svc)
|
|
clr_txint(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);
|
|
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 *escc_mem_read[3] = {
|
|
escc_mem_readb,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
|
|
static CPUWriteMemoryFunc *escc_mem_write[3] = {
|
|
escc_mem_writeb,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
|
|
static void escc_save_chn(QEMUFile *f, ChannelState *s)
|
|
{
|
|
uint32_t tmp = 0;
|
|
|
|
qemu_put_be32s(f, &tmp); /* unused, was IRQ. */
|
|
qemu_put_be32s(f, &s->reg);
|
|
qemu_put_be32s(f, &s->rxint);
|
|
qemu_put_be32s(f, &s->txint);
|
|
qemu_put_be32s(f, &s->rxint_under_svc);
|
|
qemu_put_be32s(f, &s->txint_under_svc);
|
|
qemu_put_8s(f, &s->rx);
|
|
qemu_put_8s(f, &s->tx);
|
|
qemu_put_buffer(f, s->wregs, SERIAL_REGS);
|
|
qemu_put_buffer(f, s->rregs, SERIAL_REGS);
|
|
}
|
|
|
|
static void escc_save(QEMUFile *f, void *opaque)
|
|
{
|
|
SerialState *s = opaque;
|
|
|
|
escc_save_chn(f, &s->chn[0]);
|
|
escc_save_chn(f, &s->chn[1]);
|
|
}
|
|
|
|
static int escc_load_chn(QEMUFile *f, ChannelState *s, int version_id)
|
|
{
|
|
uint32_t tmp;
|
|
|
|
if (version_id > 2)
|
|
return -EINVAL;
|
|
|
|
qemu_get_be32s(f, &tmp); /* unused */
|
|
qemu_get_be32s(f, &s->reg);
|
|
qemu_get_be32s(f, &s->rxint);
|
|
qemu_get_be32s(f, &s->txint);
|
|
if (version_id >= 2) {
|
|
qemu_get_be32s(f, &s->rxint_under_svc);
|
|
qemu_get_be32s(f, &s->txint_under_svc);
|
|
}
|
|
qemu_get_8s(f, &s->rx);
|
|
qemu_get_8s(f, &s->tx);
|
|
qemu_get_buffer(f, s->wregs, SERIAL_REGS);
|
|
qemu_get_buffer(f, s->rregs, SERIAL_REGS);
|
|
return 0;
|
|
}
|
|
|
|
static int escc_load(QEMUFile *f, void *opaque, int version_id)
|
|
{
|
|
SerialState *s = opaque;
|
|
int ret;
|
|
|
|
ret = escc_load_chn(f, &s->chn[0], version_id);
|
|
if (ret != 0)
|
|
return ret;
|
|
ret = escc_load_chn(f, &s->chn[1], version_id);
|
|
return ret;
|
|
|
|
}
|
|
|
|
int escc_init(target_phys_addr_t base, qemu_irq irq, CharDriverState *chrA,
|
|
CharDriverState *chrB, int clock, int it_shift)
|
|
{
|
|
int escc_io_memory, i;
|
|
SerialState *s;
|
|
|
|
s = qemu_mallocz(sizeof(SerialState));
|
|
if (!s)
|
|
return 0;
|
|
|
|
escc_io_memory = cpu_register_io_memory(0, escc_mem_read,
|
|
escc_mem_write,
|
|
s);
|
|
if (base)
|
|
cpu_register_physical_memory(base, ESCC_SIZE << it_shift,
|
|
escc_io_memory);
|
|
|
|
s->it_shift = it_shift;
|
|
s->chn[0].chr = chrB;
|
|
s->chn[1].chr = chrA;
|
|
s->chn[0].disabled = 0;
|
|
s->chn[1].disabled = 0;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
s->chn[i].irq = irq;
|
|
s->chn[i].chn = 1 - i;
|
|
s->chn[i].type = ser;
|
|
s->chn[i].clock = clock / 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];
|
|
if (base)
|
|
register_savevm("escc", base, 2, escc_save, escc_load, s);
|
|
else
|
|
register_savevm("escc", -1, 2, escc_save, escc_load, s);
|
|
qemu_register_reset(escc_reset, s);
|
|
escc_reset(s);
|
|
return escc_io_memory;
|
|
}
|
|
|
|
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)
|
|
{
|
|
int slavio_serial_io_memory, i;
|
|
SerialState *s;
|
|
|
|
s = qemu_mallocz(sizeof(SerialState));
|
|
if (!s)
|
|
return;
|
|
|
|
s->it_shift = it_shift;
|
|
for (i = 0; i < 2; i++) {
|
|
s->chn[i].irq = irq;
|
|
s->chn[i].chn = 1 - i;
|
|
s->chn[i].chr = NULL;
|
|
s->chn[i].clock = clock / 2;
|
|
}
|
|
s->chn[0].otherchn = &s->chn[1];
|
|
s->chn[1].otherchn = &s->chn[0];
|
|
s->chn[0].type = mouse;
|
|
s->chn[1].type = kbd;
|
|
s->chn[0].disabled = disabled;
|
|
s->chn[1].disabled = disabled;
|
|
|
|
slavio_serial_io_memory = cpu_register_io_memory(0, escc_mem_read,
|
|
escc_mem_write,
|
|
s);
|
|
cpu_register_physical_memory(base, ESCC_SIZE << it_shift,
|
|
slavio_serial_io_memory);
|
|
|
|
qemu_add_mouse_event_handler(sunmouse_event, &s->chn[0], 0,
|
|
"QEMU Sun Mouse");
|
|
qemu_add_kbd_event_handler(sunkbd_event, &s->chn[1]);
|
|
register_savevm("slavio_serial_mouse", base, 2, escc_save, escc_load, s);
|
|
qemu_register_reset(escc_reset, s);
|
|
escc_reset(s);
|
|
}
|