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[Qemu-devel] [PATCH 08/10] fdc: add CCR (Configuration Control Register)
From: |
Hervé Poussineau |
Subject: |
[Qemu-devel] [PATCH 08/10] fdc: add CCR (Configuration Control Register) write register |
Date: |
Sun, 8 Jan 2012 21:27:46 +0100 |
Signed-off-by: Hervé Poussineau <address@hidden>
---
hw/fdc.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/hw/fdc.c b/hw/fdc.c
index ddfa91f..67cd14f 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -227,6 +227,7 @@ static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t
value);
static uint32_t fdctrl_read_data(FDCtrl *fdctrl);
static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value);
static uint32_t fdctrl_read_dir(FDCtrl *fdctrl);
+static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value);
enum {
FD_DIR_WRITE = 0,
@@ -251,6 +252,7 @@ enum {
FD_REG_DSR = 0x04,
FD_REG_FIFO = 0x05,
FD_REG_DIR = 0x07,
+ FD_REG_CCR = 0x07,
};
enum {
@@ -495,6 +497,8 @@ static void fdctrl_write (void *opaque, uint32_t reg,
uint32_t value)
case FD_REG_FIFO:
fdctrl_write_data(fdctrl, value);
break;
+ case FD_REG_CCR:
+ fdctrl_write_ccr(fdctrl, value);
default:
break;
}
@@ -885,6 +889,23 @@ static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t
value)
fdctrl->dsr = value;
}
+/* Configuration control register: 0x07 (write) */
+static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value)
+{
+ /* Reset mode */
+ if (!(fdctrl->dor & FD_DOR_nRESET)) {
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
+ return;
+ }
+ FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
+
+ /* Only the rate selection bits used in AT mode, and we
+ * store those in the DSR.
+ */
+ fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) |
+ (value & FD_DSR_DRATEMASK);
+}
+
static int fdctrl_media_changed(FDrive *drv)
{
int ret;
--
1.7.7.3
- [Qemu-devel] [PATCH 00/10] Misc fixes for floppy emulation, Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 02/10] fdc: set busy bit when starting a command, Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 03/10] fdc: most control commands do not generate interrupts, Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 04/10] fdc: emulate stepping 0, Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 01/10] fdc: take head count into account, Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 05/10] fdc: handle read-only floppies (abort early on write commands), Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 06/10] block: add a transfer rate for floppy types, Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 07/10] fdc: check if media rate is correct before doing any transfer, Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 08/10] fdc: add CCR (Configuration Control Register) write register,
Hervé Poussineau <=
- [Qemu-devel] [PATCH 10/10] fdc: DIR (Digital Input Register) should return status of current drive..., Hervé Poussineau, 2012/01/08
- [Qemu-devel] [PATCH 09/10] fdc: fix seek command, which shouldn't check tracks, Hervé Poussineau, 2012/01/08