This is in preparation for moving NeXTRTC to its own separate device. Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk> --- hw/m68k/next-cube.c | 169 ++++++++++++++++++++++++-------------------- 1 file changed, 92 insertions(+), 77 deletions(-)
diff --git a/hw/m68k/next-cube.c b/hw/m68k/next-cube.c index 2a2e970830..43b2c775c0 100644 --- a/hw/m68k/next-cube.c +++ b/hw/m68k/next-cube.c @@ -171,6 +171,90 @@ static bool next_rtc_cmd_is_write(uint8_t cmd) (cmd == 0xb1); } +static void next_rtc_data_in_irq(void *opaque, int n, int level) +{ + NeXTPC *s = NEXT_PC(opaque); + NeXTRTC *rtc = &s->rtc; + + if (rtc->phase < 8) { + rtc->command = (rtc->command << 1) | level; + + if (rtc->phase == 7 && !next_rtc_cmd_is_write(rtc->command)) { + if (rtc->command <= 0x1f) { + /* RAM registers */ + rtc->retval = rtc->ram[rtc->command]; + } + if ((rtc->command >= 0x20) && (rtc->command <= 0x2f)) { + /* RTC */ + time_t time_h = time(NULL); + struct tm *info = localtime(&time_h); + rtc->retval = 0; + + switch (rtc->command) { + case 0x20: + rtc->retval = SCR2_TOBCD(info->tm_sec); + break; + case 0x21: + rtc->retval = SCR2_TOBCD(info->tm_min); + break; + case 0x22: + rtc->retval = SCR2_TOBCD(info->tm_hour); + break; + case 0x24: + rtc->retval = SCR2_TOBCD(info->tm_mday); + break; + case 0x25: + rtc->retval = SCR2_TOBCD((info->tm_mon + 1)); + break; + case 0x26: + rtc->retval = SCR2_TOBCD((info->tm_year - 100)); + break; + } + } + if (rtc->command == 0x30) { + /* read the status 0x30 */ + rtc->retval = rtc->status; + } + if (rtc->command == 0x31) { + /* read the control 0x31 */ + rtc->retval = rtc->control; + } + } + } + if (rtc->phase >= 8 && rtc->phase < 16) { + if (next_rtc_cmd_is_write(rtc->command)) { + /* Shift in value to write */ + rtc->value = (rtc->value << 1) | level; + } else { + /* Shift out value to read */ + qemu_irq rtc_data_in_irq = qdev_get_gpio_in_named( + DEVICE(s), "pc-rtc-data-in", 0); + + if (rtc->retval & (0x80 >> (rtc->phase - 8))) { + qemu_irq_raise(rtc_data_in_irq); + } else { + qemu_irq_lower(rtc_data_in_irq); + } + } + } + + rtc->phase++; + if (rtc->phase == 16 && next_rtc_cmd_is_write(rtc->command)) { + if (rtc->command >= 0x80 && rtc->command <= 0x9f) { + /* RAM registers */ + rtc->ram[rtc->command - 0x80] = rtc->value; + } + if (rtc->command == 0xb1) { + /* write to 0x30 register */ + if (rtc->value & 0x04) { + /* clear FTU */ + rtc->status = rtc->status & (~0x18); + qemu_irq_lower(s->rtc_power_irq); + } + } + } +} + static void next_scr2_rtc_update(NeXTPC *s) { uint8_t old_scr2, scr2_2; @@ -187,84 +271,13 @@ static void next_scr2_rtc_update(NeXTPC *s) /* If we are in going down clock... do something */ if (((old_scr2 & SCR2_RTCLK) != (scr2_2 & SCR2_RTCLK)) && ((scr2_2 & SCR2_RTCLK) == 0)) { - if (rtc->phase < 8) { - rtc->command = (rtc->command << 1) | - ((scr2_2 & SCR2_RTDATA) ? 1 : 0); - - if (rtc->phase == 7 && !next_rtc_cmd_is_write(rtc->command)) { - if (rtc->command <= 0x1f) { - /* RAM registers */ - rtc->retval = rtc->ram[rtc->command]; - } - if ((rtc->command >= 0x20) && (rtc->command <= 0x2F)) { - /* RTC */ - time_t time_h = time(NULL); - struct tm *info = localtime(&time_h); - rtc->retval = 0; - - switch (rtc->command) { - case 0x20: - rtc->retval = SCR2_TOBCD(info->tm_sec); - break; - case 0x21: - rtc->retval = SCR2_TOBCD(info->tm_min); - break; - case 0x22: - rtc->retval = SCR2_TOBCD(info->tm_hour); - break; - case 0x24: - rtc->retval = SCR2_TOBCD(info->tm_mday); - break; - case 0x25: - rtc->retval = SCR2_TOBCD((info->tm_mon + 1)); - break; - case 0x26: - rtc->retval = SCR2_TOBCD((info->tm_year - 100)); - break; - } - } - if (rtc->command == 0x30) { - /* read the status 0x30 */ - rtc->retval = rtc->status; - } - if (rtc->command == 0x31) { - /* read the control 0x31 */ - rtc->retval = rtc->control; - } - } - } - if (rtc->phase >= 8 && rtc->phase < 16) { - if (next_rtc_cmd_is_write(rtc->command)) { - /* Shift in value to write */ - rtc->value = (rtc->value << 1) | - ((scr2_2 & SCR2_RTDATA) ? 1 : 0); - } else { - /* Shift out value to read */ - qemu_irq rtc_data_in_irq = qdev_get_gpio_in_named( - DEVICE(s), "pc-rtc-data-in", 0); - - if (rtc->retval & (0x80 >> (rtc->phase - 8))) { - qemu_irq_raise(rtc_data_in_irq); - } else { - qemu_irq_lower(rtc_data_in_irq); - } - } - } + qemu_irq rtc_data_in_irq = qdev_get_gpio_in_named( + DEVICE(s), "rtc-data-in", 0); - rtc->phase++; - if (rtc->phase == 16 && next_rtc_cmd_is_write(rtc->command)) { - if (rtc->command >= 0x80 && rtc->command <= 0x9f) { - /* RAM registers */ - rtc->ram[rtc->command - 0x80] = rtc->value; - } - if (rtc->command == 0xb1) { - /* write to 0x30 register */ - if (rtc->value & 0x04) { - /* clear FTU */ - rtc->status = rtc->status & (~0x18); - qemu_irq_lower(s->rtc_power_irq); - } - } + if (scr2_2 & SCR2_RTDATA) { + qemu_irq_raise(rtc_data_in_irq); + } else { + qemu_irq_lower(rtc_data_in_irq); } } } else { @@ -1104,6 +1117,8 @@ static void next_pc_init(Object *obj) s->rtc_power_irq = qdev_get_gpio_in(DEVICE(obj), NEXT_PWR_I); qdev_init_gpio_in_named(DEVICE(obj), next_pc_rtc_data_in_irq, "pc-rtc-data-in", 1); + qdev_init_gpio_in_named(DEVICE(obj), next_rtc_data_in_irq, + "rtc-data-in", 1); } /* -- 2.39.5