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/*
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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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|
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/* debug serial */
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//#define DEBUG_SERIAL
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|
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/* debug keyboard */
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//#define DEBUG_KBD
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|
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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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|
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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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|
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#define CHN_C(s) ((s)->chn == chn_b? 'b' : 'a') |
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|
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typedef enum { |
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ser, kbd, mouse, |
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} chn_type_t; |
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|
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#define SERIO_QUEUE_SIZE 256 |
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|
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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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|
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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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|
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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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|
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#define SERIAL_CTRL 0 |
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#define SERIAL_DATA 1 |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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} |
| 322 |
|
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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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} |
| 329 |
|
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static inline void set_rxint(ChannelState *s) |
| 331 |
{
|
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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; |
| 338 |
else
|
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s->otherchn->rregs[R_IVEC] = IVEC_LORXINTA; |
| 340 |
} else {
|
| 341 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
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s->rregs[R_IVEC] = IVEC_HIRXINTB; |
| 343 |
else
|
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s->rregs[R_IVEC] = IVEC_LORXINTB; |
| 345 |
} |
| 346 |
} |
| 347 |
if (s->chn == chn_a)
|
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s->rregs[R_INTR] |= INTR_RXINTA; |
| 349 |
else
|
| 350 |
s->otherchn->rregs[R_INTR] |= INTR_RXINTB; |
| 351 |
escc_update_irq(s); |
| 352 |
} |
| 353 |
|
| 354 |
static inline void set_txint(ChannelState *s) |
| 355 |
{
|
| 356 |
s->txint = 1;
|
| 357 |
if (!s->rxint_under_svc) {
|
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s->txint_under_svc = 1;
|
| 359 |
if (s->chn == chn_a) {
|
| 360 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 361 |
s->otherchn->rregs[R_IVEC] = IVEC_HITXINTA; |
| 362 |
else
|
| 363 |
s->otherchn->rregs[R_IVEC] = IVEC_LOTXINTA; |
| 364 |
} else {
|
| 365 |
s->rregs[R_IVEC] = IVEC_TXINTB; |
| 366 |
} |
| 367 |
} |
| 368 |
if (s->chn == chn_a)
|
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s->rregs[R_INTR] |= INTR_TXINTA; |
| 370 |
else
|
| 371 |
s->otherchn->rregs[R_INTR] |= INTR_TXINTB; |
| 372 |
escc_update_irq(s); |
| 373 |
} |
| 374 |
|
| 375 |
static inline void clr_rxint(ChannelState *s) |
| 376 |
{
|
| 377 |
s->rxint = 0;
|
| 378 |
s->rxint_under_svc = 0;
|
| 379 |
if (s->chn == chn_a) {
|
| 380 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 381 |
s->otherchn->rregs[R_IVEC] = IVEC_HINOINT; |
| 382 |
else
|
| 383 |
s->otherchn->rregs[R_IVEC] = IVEC_LONOINT; |
| 384 |
s->rregs[R_INTR] &= ~INTR_RXINTA; |
| 385 |
} else {
|
| 386 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 387 |
s->rregs[R_IVEC] = IVEC_HINOINT; |
| 388 |
else
|
| 389 |
s->rregs[R_IVEC] = IVEC_LONOINT; |
| 390 |
s->otherchn->rregs[R_INTR] &= ~INTR_RXINTB; |
| 391 |
} |
| 392 |
if (s->txint)
|
| 393 |
set_txint(s); |
| 394 |
escc_update_irq(s); |
| 395 |
} |
| 396 |
|
| 397 |
static inline void clr_txint(ChannelState *s) |
| 398 |
{
|
| 399 |
s->txint = 0;
|
| 400 |
s->txint_under_svc = 0;
|
| 401 |
if (s->chn == chn_a) {
|
| 402 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 403 |
s->otherchn->rregs[R_IVEC] = IVEC_HINOINT; |
| 404 |
else
|
| 405 |
s->otherchn->rregs[R_IVEC] = IVEC_LONOINT; |
| 406 |
s->rregs[R_INTR] &= ~INTR_TXINTA; |
| 407 |
} else {
|
| 408 |
if (s->wregs[W_MINTR] & MINTR_STATUSHI)
|
| 409 |
s->rregs[R_IVEC] = IVEC_HINOINT; |
| 410 |
else
|
| 411 |
s->rregs[R_IVEC] = IVEC_LONOINT; |
| 412 |
s->otherchn->rregs[R_INTR] &= ~INTR_TXINTB; |
| 413 |
} |
| 414 |
if (s->rxint)
|
| 415 |
set_rxint(s); |
| 416 |
escc_update_irq(s); |
| 417 |
} |
| 418 |
|
| 419 |
static void escc_update_parameters(ChannelState *s) |
| 420 |
{
|
| 421 |
int speed, parity, data_bits, stop_bits;
|
| 422 |
QEMUSerialSetParams ssp; |
| 423 |
|
| 424 |
if (!s->chr || s->type != ser)
|
| 425 |
return;
|
| 426 |
|
| 427 |
if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREN) {
|
| 428 |
if (s->wregs[W_TXCTRL1] & TXCTRL1_PAREV)
|
| 429 |
parity = 'E';
|
| 430 |
else
|
| 431 |
parity = 'O';
|
| 432 |
} else {
|
| 433 |
parity = 'N';
|
| 434 |
} |
| 435 |
if ((s->wregs[W_TXCTRL1] & TXCTRL1_STPMSK) == TXCTRL1_2STOP)
|
| 436 |
stop_bits = 2;
|
| 437 |
else
|
| 438 |
stop_bits = 1;
|
| 439 |
switch (s->wregs[W_TXCTRL2] & TXCTRL2_BITMSK) {
|
| 440 |
case TXCTRL2_5BITS:
|
| 441 |
data_bits = 5;
|
| 442 |
break;
|
| 443 |
case TXCTRL2_7BITS:
|
| 444 |
data_bits = 7;
|
| 445 |
break;
|
| 446 |
case TXCTRL2_6BITS:
|
| 447 |
data_bits = 6;
|
| 448 |
break;
|
| 449 |
default:
|
| 450 |
case TXCTRL2_8BITS:
|
| 451 |
data_bits = 8;
|
| 452 |
break;
|
| 453 |
} |
| 454 |
speed = s->clock / ((s->wregs[W_BRGLO] | (s->wregs[W_BRGHI] << 8)) + 2); |
| 455 |
switch (s->wregs[W_TXCTRL1] & TXCTRL1_CLKMSK) {
|
| 456 |
case TXCTRL1_CLK1X:
|
| 457 |
break;
|
| 458 |
case TXCTRL1_CLK16X:
|
| 459 |
speed /= 16;
|
| 460 |
break;
|
| 461 |
case TXCTRL1_CLK32X:
|
| 462 |
speed /= 32;
|
| 463 |
break;
|
| 464 |
default:
|
| 465 |
case TXCTRL1_CLK64X:
|
| 466 |
speed /= 64;
|
| 467 |
break;
|
| 468 |
} |
| 469 |
ssp.speed = speed; |
| 470 |
ssp.parity = parity; |
| 471 |
ssp.data_bits = data_bits; |
| 472 |
ssp.stop_bits = stop_bits; |
| 473 |
SER_DPRINTF("channel %c: speed=%d parity=%c data=%d stop=%d\n", CHN_C(s),
|
| 474 |
speed, parity, data_bits, stop_bits); |
| 475 |
qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp); |
| 476 |
} |
| 477 |
|
| 478 |
static void escc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 479 |
{
|
| 480 |
SerialState *serial = opaque; |
| 481 |
ChannelState *s; |
| 482 |
uint32_t saddr; |
| 483 |
int newreg, channel;
|
| 484 |
|
| 485 |
val &= 0xff;
|
| 486 |
saddr = (addr >> serial->it_shift) & 1;
|
| 487 |
channel = (addr >> (serial->it_shift + 1)) & 1; |
| 488 |
s = &serial->chn[channel]; |
| 489 |
switch (saddr) {
|
| 490 |
case SERIAL_CTRL:
|
| 491 |
SER_DPRINTF("Write channel %c, reg[%d] = %2.2x\n", CHN_C(s), s->reg,
|
| 492 |
val & 0xff);
|
| 493 |
newreg = 0;
|
| 494 |
switch (s->reg) {
|
| 495 |
case W_CMD:
|
| 496 |
newreg = val & CMD_PTR_MASK; |
| 497 |
val &= CMD_CMD_MASK; |
| 498 |
switch (val) {
|
| 499 |
case CMD_HI:
|
| 500 |
newreg |= CMD_HI; |
| 501 |
break;
|
| 502 |
case CMD_CLR_TXINT:
|
| 503 |
clr_txint(s); |
| 504 |
break;
|
| 505 |
case CMD_CLR_IUS:
|
| 506 |
if (s->rxint_under_svc)
|
| 507 |
clr_rxint(s); |
| 508 |
else if (s->txint_under_svc) |
| 509 |
clr_txint(s); |
| 510 |
break;
|
| 511 |
default:
|
| 512 |
break;
|
| 513 |
} |
| 514 |
break;
|
| 515 |
case W_INTR ... W_RXCTRL:
|
| 516 |
case W_SYNC1 ... W_TXBUF:
|
| 517 |
case W_MISC1 ... W_CLOCK:
|
| 518 |
case W_MISC2 ... W_EXTINT:
|
| 519 |
s->wregs[s->reg] = val; |
| 520 |
break;
|
| 521 |
case W_TXCTRL1:
|
| 522 |
case W_TXCTRL2:
|
| 523 |
s->wregs[s->reg] = val; |
| 524 |
escc_update_parameters(s); |
| 525 |
break;
|
| 526 |
case W_BRGLO:
|
| 527 |
case W_BRGHI:
|
| 528 |
s->wregs[s->reg] = val; |
| 529 |
s->rregs[s->reg] = val; |
| 530 |
escc_update_parameters(s); |
| 531 |
break;
|
| 532 |
case W_MINTR:
|
| 533 |
switch (val & MINTR_RST_MASK) {
|
| 534 |
case 0: |
| 535 |
default:
|
| 536 |
break;
|
| 537 |
case MINTR_RST_B:
|
| 538 |
escc_reset_chn(&serial->chn[0]);
|
| 539 |
return;
|
| 540 |
case MINTR_RST_A:
|
| 541 |
escc_reset_chn(&serial->chn[1]);
|
| 542 |
return;
|
| 543 |
case MINTR_RST_ALL:
|
| 544 |
escc_reset(serial); |
| 545 |
return;
|
| 546 |
} |
| 547 |
break;
|
| 548 |
default:
|
| 549 |
break;
|
| 550 |
} |
| 551 |
if (s->reg == 0) |
| 552 |
s->reg = newreg; |
| 553 |
else
|
| 554 |
s->reg = 0;
|
| 555 |
break;
|
| 556 |
case SERIAL_DATA:
|
| 557 |
SER_DPRINTF("Write channel %c, ch %d\n", CHN_C(s), val);
|
| 558 |
s->tx = val; |
| 559 |
if (s->wregs[W_TXCTRL2] & TXCTRL2_TXEN) { // tx enabled |
| 560 |
if (s->chr)
|
| 561 |
qemu_chr_write(s->chr, &s->tx, 1);
|
| 562 |
else if (s->type == kbd && !s->disabled) { |
| 563 |
handle_kbd_command(s, val); |
| 564 |
} |
| 565 |
} |
| 566 |
s->rregs[R_STATUS] |= STATUS_TXEMPTY; // Tx buffer empty
|
| 567 |
s->rregs[R_SPEC] |= SPEC_ALLSENT; // All sent
|
| 568 |
set_txint(s); |
| 569 |
break;
|
| 570 |
default:
|
| 571 |
break;
|
| 572 |
} |
| 573 |
} |
| 574 |
|
| 575 |
static uint32_t escc_mem_readb(void *opaque, target_phys_addr_t addr) |
| 576 |
{
|
| 577 |
SerialState *serial = opaque; |
| 578 |
ChannelState *s; |
| 579 |
uint32_t saddr; |
| 580 |
uint32_t ret; |
| 581 |
int channel;
|
| 582 |
|
| 583 |
saddr = (addr >> serial->it_shift) & 1;
|
| 584 |
channel = (addr >> (serial->it_shift + 1)) & 1; |
| 585 |
s = &serial->chn[channel]; |
| 586 |
switch (saddr) {
|
| 587 |
case SERIAL_CTRL:
|
| 588 |
SER_DPRINTF("Read channel %c, reg[%d] = %2.2x\n", CHN_C(s), s->reg,
|
| 589 |
s->rregs[s->reg]); |
| 590 |
ret = s->rregs[s->reg]; |
| 591 |
s->reg = 0;
|
| 592 |
return ret;
|
| 593 |
case SERIAL_DATA:
|
| 594 |
s->rregs[R_STATUS] &= ~STATUS_RXAV; |
| 595 |
clr_rxint(s); |
| 596 |
if (s->type == kbd || s->type == mouse)
|
| 597 |
ret = get_queue(s); |
| 598 |
else
|
| 599 |
ret = s->rx; |
| 600 |
SER_DPRINTF("Read channel %c, ch %d\n", CHN_C(s), ret);
|
| 601 |
if (s->chr)
|
| 602 |
qemu_chr_accept_input(s->chr); |
| 603 |
return ret;
|
| 604 |
default:
|
| 605 |
break;
|
| 606 |
} |
| 607 |
return 0; |
| 608 |
} |
| 609 |
|
| 610 |
static int serial_can_receive(void *opaque) |
| 611 |
{
|
| 612 |
ChannelState *s = opaque; |
| 613 |
int ret;
|
| 614 |
|
| 615 |
if (((s->wregs[W_RXCTRL] & RXCTRL_RXEN) == 0) // Rx not enabled |
| 616 |
|| ((s->rregs[R_STATUS] & STATUS_RXAV) == STATUS_RXAV)) |
| 617 |
// char already available
|
| 618 |
ret = 0;
|
| 619 |
else
|
| 620 |
ret = 1;
|
| 621 |
return ret;
|
| 622 |
} |
| 623 |
|
| 624 |
static void serial_receive_byte(ChannelState *s, int ch) |
| 625 |
{
|
| 626 |
SER_DPRINTF("channel %c put ch %d\n", CHN_C(s), ch);
|
| 627 |
s->rregs[R_STATUS] |= STATUS_RXAV; |
| 628 |
s->rx = ch; |
| 629 |
set_rxint(s); |
| 630 |
} |
| 631 |
|
| 632 |
static void serial_receive_break(ChannelState *s) |
| 633 |
{
|
| 634 |
s->rregs[R_STATUS] |= STATUS_BRK; |
| 635 |
escc_update_irq(s); |
| 636 |
} |
| 637 |
|
| 638 |
static void serial_receive1(void *opaque, const uint8_t *buf, int size) |
| 639 |
{
|
| 640 |
ChannelState *s = opaque; |
| 641 |
serial_receive_byte(s, buf[0]);
|
| 642 |
} |
| 643 |
|
| 644 |
static void serial_event(void *opaque, int event) |
| 645 |
{
|
| 646 |
ChannelState *s = opaque; |
| 647 |
if (event == CHR_EVENT_BREAK)
|
| 648 |
serial_receive_break(s); |
| 649 |
} |
| 650 |
|
| 651 |
static CPUReadMemoryFunc *escc_mem_read[3] = { |
| 652 |
escc_mem_readb, |
| 653 |
NULL,
|
| 654 |
NULL,
|
| 655 |
}; |
| 656 |
|
| 657 |
static CPUWriteMemoryFunc *escc_mem_write[3] = { |
| 658 |
escc_mem_writeb, |
| 659 |
NULL,
|
| 660 |
NULL,
|
| 661 |
}; |
| 662 |
|
| 663 |
static void escc_save_chn(QEMUFile *f, ChannelState *s) |
| 664 |
{
|
| 665 |
uint32_t tmp = 0;
|
| 666 |
|
| 667 |
qemu_put_be32s(f, &tmp); /* unused, was IRQ. */
|
| 668 |
qemu_put_be32s(f, &s->reg); |
| 669 |
qemu_put_be32s(f, &s->rxint); |
| 670 |
qemu_put_be32s(f, &s->txint); |
| 671 |
qemu_put_be32s(f, &s->rxint_under_svc); |
| 672 |
qemu_put_be32s(f, &s->txint_under_svc); |
| 673 |
qemu_put_8s(f, &s->rx); |
| 674 |
qemu_put_8s(f, &s->tx); |
| 675 |
qemu_put_buffer(f, s->wregs, SERIAL_REGS); |
| 676 |
qemu_put_buffer(f, s->rregs, SERIAL_REGS); |
| 677 |
} |
| 678 |
|
| 679 |
static void escc_save(QEMUFile *f, void *opaque) |
| 680 |
{
|
| 681 |
SerialState *s = opaque; |
| 682 |
|
| 683 |
escc_save_chn(f, &s->chn[0]);
|
| 684 |
escc_save_chn(f, &s->chn[1]);
|
| 685 |
} |
| 686 |
|
| 687 |
static int escc_load_chn(QEMUFile *f, ChannelState *s, int version_id) |
| 688 |
{
|
| 689 |
uint32_t tmp; |
| 690 |
|
| 691 |
if (version_id > 2) |
| 692 |
return -EINVAL;
|
| 693 |
|
| 694 |
qemu_get_be32s(f, &tmp); /* unused */
|
| 695 |
qemu_get_be32s(f, &s->reg); |
| 696 |
qemu_get_be32s(f, &s->rxint); |
| 697 |
qemu_get_be32s(f, &s->txint); |
| 698 |
if (version_id >= 2) { |
| 699 |
qemu_get_be32s(f, &s->rxint_under_svc); |
| 700 |
qemu_get_be32s(f, &s->txint_under_svc); |
| 701 |
} |
| 702 |
qemu_get_8s(f, &s->rx); |
| 703 |
qemu_get_8s(f, &s->tx); |
| 704 |
qemu_get_buffer(f, s->wregs, SERIAL_REGS); |
| 705 |
qemu_get_buffer(f, s->rregs, SERIAL_REGS); |
| 706 |
return 0; |
| 707 |
} |
| 708 |
|
| 709 |
static int escc_load(QEMUFile *f, void *opaque, int version_id) |
| 710 |
{
|
| 711 |
SerialState *s = opaque; |
| 712 |
int ret;
|
| 713 |
|
| 714 |
ret = escc_load_chn(f, &s->chn[0], version_id);
|
| 715 |
if (ret != 0) |
| 716 |
return ret;
|
| 717 |
ret = escc_load_chn(f, &s->chn[1], version_id);
|
| 718 |
return ret;
|
| 719 |
|
| 720 |
} |
| 721 |
|
| 722 |
int escc_init(target_phys_addr_t base, qemu_irq irqA, qemu_irq irqB,
|
| 723 |
CharDriverState *chrA, CharDriverState *chrB, |
| 724 |
int clock, int it_shift) |
| 725 |
{
|
| 726 |
int escc_io_memory, i;
|
| 727 |
SerialState *s; |
| 728 |
|
| 729 |
s = qemu_mallocz(sizeof(SerialState));
|
| 730 |
|
| 731 |
escc_io_memory = cpu_register_io_memory(0, escc_mem_read,
|
| 732 |
escc_mem_write, |
| 733 |
s); |
| 734 |
if (base)
|
| 735 |
cpu_register_physical_memory(base, ESCC_SIZE << it_shift, |
| 736 |
escc_io_memory); |
| 737 |
|
| 738 |
s->it_shift = it_shift; |
| 739 |
s->chn[0].chr = chrB;
|
| 740 |
s->chn[1].chr = chrA;
|
| 741 |
s->chn[0].disabled = 0; |
| 742 |
s->chn[1].disabled = 0; |
| 743 |
s->chn[0].irq = irqB;
|
| 744 |
s->chn[1].irq = irqA;
|
| 745 |
|
| 746 |
for (i = 0; i < 2; i++) { |
| 747 |
s->chn[i].chn = 1 - i;
|
| 748 |
s->chn[i].type = ser; |
| 749 |
s->chn[i].clock = clock / 2;
|
| 750 |
if (s->chn[i].chr) {
|
| 751 |
qemu_chr_add_handlers(s->chn[i].chr, serial_can_receive, |
| 752 |
serial_receive1, serial_event, &s->chn[i]); |
| 753 |
} |
| 754 |
} |
| 755 |
s->chn[0].otherchn = &s->chn[1]; |
| 756 |
s->chn[1].otherchn = &s->chn[0]; |
| 757 |
if (base)
|
| 758 |
register_savevm("escc", base, 2, escc_save, escc_load, s); |
| 759 |
else
|
| 760 |
register_savevm("escc", -1, 2, escc_save, escc_load, s); |
| 761 |
qemu_register_reset(escc_reset, s); |
| 762 |
escc_reset(s); |
| 763 |
return escc_io_memory;
|
| 764 |
} |
| 765 |
|
| 766 |
static const uint8_t keycodes[128] = { |
| 767 |
127, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 53, |
| 768 |
54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 89, 76, 77, 78, |
| 769 |
79, 80, 81, 82, 83, 84, 85, 86, 87, 42, 99, 88, 100, 101, 102, 103, |
| 770 |
104, 105, 106, 107, 108, 109, 110, 47, 19, 121, 119, 5, 6, 8, 10, 12, |
| 771 |
14, 16, 17, 18, 7, 98, 23, 68, 69, 70, 71, 91, 92, 93, 125, 112, |
| 772 |
113, 114, 94, 50, 0, 0, 124, 9, 11, 0, 0, 0, 0, 0, 0, 0, |
| 773 |
90, 0, 46, 22, 13, 111, 52, 20, 96, 24, 28, 74, 27, 123, 44, 66, |
| 774 |
0, 45, 2, 4, 48, 0, 0, 21, 0, 0, 0, 0, 0, 120, 122, 67, |
| 775 |
}; |
| 776 |
|
| 777 |
static const uint8_t e0_keycodes[128] = { |
| 778 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 779 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 90, 76, 0, 0, |
| 780 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 781 |
0, 0, 0, 0, 0, 109, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, |
| 782 |
0, 0, 0, 0, 0, 0, 0, 68, 69, 70, 0, 91, 0, 93, 0, 112, |
| 783 |
113, 114, 94, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 784 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 785 |
1, 3, 25, 26, 49, 52, 72, 73, 97, 99, 111, 118, 120, 122, 67, 0, |
| 786 |
}; |
| 787 |
|
| 788 |
static void sunkbd_event(void *opaque, int ch) |
| 789 |
{
|
| 790 |
ChannelState *s = opaque; |
| 791 |
int release = ch & 0x80; |
| 792 |
|
| 793 |
KBD_DPRINTF("Untranslated keycode %2.2x (%s)\n", ch, release? "release" : |
| 794 |
"press");
|
| 795 |
switch (ch) {
|
| 796 |
case 58: // Caps lock press |
| 797 |
s->caps_lock_mode ^= 1;
|
| 798 |
if (s->caps_lock_mode == 2) |
| 799 |
return; // Drop second press |
| 800 |
break;
|
| 801 |
case 69: // Num lock press |
| 802 |
s->num_lock_mode ^= 1;
|
| 803 |
if (s->num_lock_mode == 2) |
| 804 |
return; // Drop second press |
| 805 |
break;
|
| 806 |
case 186: // Caps lock release |
| 807 |
s->caps_lock_mode ^= 2;
|
| 808 |
if (s->caps_lock_mode == 3) |
| 809 |
return; // Drop first release |
| 810 |
break;
|
| 811 |
case 197: // Num lock release |
| 812 |
s->num_lock_mode ^= 2;
|
| 813 |
if (s->num_lock_mode == 3) |
| 814 |
return; // Drop first release |
| 815 |
break;
|
| 816 |
case 0xe0: |
| 817 |
s->e0_mode = 1;
|
| 818 |
return;
|
| 819 |
default:
|
| 820 |
break;
|
| 821 |
} |
| 822 |
if (s->e0_mode) {
|
| 823 |
s->e0_mode = 0;
|
| 824 |
ch = e0_keycodes[ch & 0x7f];
|
| 825 |
} else {
|
| 826 |
ch = keycodes[ch & 0x7f];
|
| 827 |
} |
| 828 |
KBD_DPRINTF("Translated keycode %2.2x\n", ch);
|
| 829 |
put_queue(s, ch | release); |
| 830 |
} |
| 831 |
|
| 832 |
static void handle_kbd_command(ChannelState *s, int val) |
| 833 |
{
|
| 834 |
KBD_DPRINTF("Command %d\n", val);
|
| 835 |
if (s->led_mode) { // Ignore led byte |
| 836 |
s->led_mode = 0;
|
| 837 |
return;
|
| 838 |
} |
| 839 |
switch (val) {
|
| 840 |
case 1: // Reset, return type code |
| 841 |
clear_queue(s); |
| 842 |
put_queue(s, 0xff);
|
| 843 |
put_queue(s, 4); // Type 4 |
| 844 |
put_queue(s, 0x7f);
|
| 845 |
break;
|
| 846 |
case 0xe: // Set leds |
| 847 |
s->led_mode = 1;
|
| 848 |
break;
|
| 849 |
case 7: // Query layout |
| 850 |
case 0xf: |
| 851 |
clear_queue(s); |
| 852 |
put_queue(s, 0xfe);
|
| 853 |
put_queue(s, 0); // XXX, layout? |
| 854 |
break;
|
| 855 |
default:
|
| 856 |
break;
|
| 857 |
} |
| 858 |
} |
| 859 |
|
| 860 |
static void sunmouse_event(void *opaque, |
| 861 |
int dx, int dy, int dz, int buttons_state) |
| 862 |
{
|
| 863 |
ChannelState *s = opaque; |
| 864 |
int ch;
|
| 865 |
|
| 866 |
MS_DPRINTF("dx=%d dy=%d buttons=%01x\n", dx, dy, buttons_state);
|
| 867 |
|
| 868 |
ch = 0x80 | 0x7; /* protocol start byte, no buttons pressed */ |
| 869 |
|
| 870 |
if (buttons_state & MOUSE_EVENT_LBUTTON)
|
| 871 |
ch ^= 0x4;
|
| 872 |
if (buttons_state & MOUSE_EVENT_MBUTTON)
|
| 873 |
ch ^= 0x2;
|
| 874 |
if (buttons_state & MOUSE_EVENT_RBUTTON)
|
| 875 |
ch ^= 0x1;
|
| 876 |
|
| 877 |
put_queue(s, ch); |
| 878 |
|
| 879 |
ch = dx; |
| 880 |
|
| 881 |
if (ch > 127) |
| 882 |
ch=127;
|
| 883 |
else if (ch < -127) |
| 884 |
ch=-127;
|
| 885 |
|
| 886 |
put_queue(s, ch & 0xff);
|
| 887 |
|
| 888 |
ch = -dy; |
| 889 |
|
| 890 |
if (ch > 127) |
| 891 |
ch=127;
|
| 892 |
else if (ch < -127) |
| 893 |
ch=-127;
|
| 894 |
|
| 895 |
put_queue(s, ch & 0xff);
|
| 896 |
|
| 897 |
// MSC protocol specify two extra motion bytes
|
| 898 |
|
| 899 |
put_queue(s, 0);
|
| 900 |
put_queue(s, 0);
|
| 901 |
} |
| 902 |
|
| 903 |
void slavio_serial_ms_kbd_init(target_phys_addr_t base, qemu_irq irq,
|
| 904 |
int disabled, int clock, int it_shift) |
| 905 |
{
|
| 906 |
int slavio_serial_io_memory, i;
|
| 907 |
SerialState *s; |
| 908 |
|
| 909 |
s = qemu_mallocz(sizeof(SerialState));
|
| 910 |
|
| 911 |
s->it_shift = it_shift; |
| 912 |
for (i = 0; i < 2; i++) { |
| 913 |
s->chn[i].irq = irq; |
| 914 |
s->chn[i].chn = 1 - i;
|
| 915 |
s->chn[i].chr = NULL;
|
| 916 |
s->chn[i].clock = clock / 2;
|
| 917 |
} |
| 918 |
s->chn[0].otherchn = &s->chn[1]; |
| 919 |
s->chn[1].otherchn = &s->chn[0]; |
| 920 |
s->chn[0].type = mouse;
|
| 921 |
s->chn[1].type = kbd;
|
| 922 |
s->chn[0].disabled = disabled;
|
| 923 |
s->chn[1].disabled = disabled;
|
| 924 |
|
| 925 |
slavio_serial_io_memory = cpu_register_io_memory(0, escc_mem_read,
|
| 926 |
escc_mem_write, |
| 927 |
s); |
| 928 |
cpu_register_physical_memory(base, ESCC_SIZE << it_shift, |
| 929 |
slavio_serial_io_memory); |
| 930 |
|
| 931 |
qemu_add_mouse_event_handler(sunmouse_event, &s->chn[0], 0, |
| 932 |
"QEMU Sun Mouse");
|
| 933 |
qemu_add_kbd_event_handler(sunkbd_event, &s->chn[1]);
|
| 934 |
register_savevm("slavio_serial_mouse", base, 2, escc_save, escc_load, s); |
| 935 |
qemu_register_reset(escc_reset, s); |
| 936 |
escc_reset(s); |
| 937 |
} |