diff options
Diffstat (limited to 'hw/fdc.c')
| -rw-r--r-- | hw/fdc.c | 28 |
1 files changed, 21 insertions, 7 deletions
@@ -395,6 +395,8 @@ struct fdctrl_t { uint8_t lock; /* Power down config (also with status regB access mode */ uint8_t pwrd; + /* Sun4m quirks? */ + int sun; /* Floppy drives */ fdrive_t drives[2]; }; @@ -405,12 +407,14 @@ static uint32_t fdctrl_read (void *opaque, uint32_t reg) uint32_t retval; switch (reg & 0x07) { -#ifdef TARGET_SPARC case 0x00: - // Identify to Linux as S82078B - retval = fdctrl_read_statusB(fdctrl); + if (fdctrl->sun) { + // Identify to Linux as S82078B + retval = fdctrl_read_statusB(fdctrl); + } else { + retval = (uint32_t)(-1); + } break; -#endif case 0x01: retval = fdctrl_read_statusB(fdctrl); break; @@ -598,6 +602,7 @@ fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped, fdctrl->dma_chann = dma_chann; fdctrl->io_base = io_base; fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */ + fdctrl->sun = 0; if (fdctrl->dma_chann != -1) { fdctrl->dma_en = 1; DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl); @@ -631,6 +636,17 @@ fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped, return fdctrl; } +fdctrl_t *sun4m_fdctrl_init (qemu_irq irq, target_phys_addr_t io_base, + BlockDriverState **fds) +{ + fdctrl_t *fdctrl; + + fdctrl = fdctrl_init(irq, 0, 1, io_base, fds); + fdctrl->sun = 1; + + return fdctrl; +} + /* XXX: may change if moved to bdrv */ int fdctrl_get_drive_type(fdctrl_t *fdctrl, int drive_num) { @@ -647,14 +663,12 @@ static void fdctrl_reset_irq (fdctrl_t *fdctrl) static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status) { -#ifdef TARGET_SPARC // Sparc mutation - if (!fdctrl->dma_en) { + if (fdctrl->sun && !fdctrl->dma_en) { fdctrl->state &= ~FD_CTRL_BUSY; fdctrl->int_status = status; return; } -#endif if (~(fdctrl->state & FD_CTRL_INTR)) { qemu_set_irq(fdctrl->irq, 1); fdctrl->state |= FD_CTRL_INTR; |