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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/include/asm/floppy.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/include/asm/floppy.h')
-rw-r--r--arch/arm/include/asm/floppy.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/arch/arm/include/asm/floppy.h b/arch/arm/include/asm/floppy.h
new file mode 100644
index 000000000..e1cb04ed5
--- /dev/null
+++ b/arch/arm/include/asm/floppy.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * arch/arm/include/asm/floppy.h
+ *
+ * Copyright (C) 1996-2000 Russell King
+ *
+ * Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here
+ */
+#ifndef __ASM_ARM_FLOPPY_H
+#define __ASM_ARM_FLOPPY_H
+
+#define fd_outb(val, base, reg) \
+ do { \
+ int new_val = (val); \
+ if ((reg) == FD_DOR) { \
+ if (new_val & 0xf0) \
+ new_val = (new_val & 0x0c) | \
+ floppy_selects[new_val & 3]; \
+ else \
+ new_val &= 0x0c; \
+ } \
+ outb(new_val, (base) + (reg)); \
+ } while(0)
+
+#define fd_inb(base, reg) inb((base) + (reg))
+#define fd_request_irq() request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\
+ 0,"floppy",NULL)
+#define fd_free_irq() free_irq(IRQ_FLOPPYDISK,NULL)
+#define fd_disable_irq() disable_irq(IRQ_FLOPPYDISK)
+#define fd_enable_irq() enable_irq(IRQ_FLOPPYDISK)
+
+static inline int fd_dma_setup(void *data, unsigned int length,
+ unsigned int mode, unsigned long addr)
+{
+ set_dma_mode(DMA_FLOPPY, mode);
+ __set_dma_addr(DMA_FLOPPY, data);
+ set_dma_count(DMA_FLOPPY, length);
+ virtual_dma_port = addr;
+ enable_dma(DMA_FLOPPY);
+ return 0;
+}
+#define fd_dma_setup fd_dma_setup
+
+#define fd_request_dma() request_dma(DMA_FLOPPY,"floppy")
+#define fd_free_dma() free_dma(DMA_FLOPPY)
+#define fd_disable_dma() disable_dma(DMA_FLOPPY)
+
+/* need to clean up dma.h */
+#define DMA_FLOPPYDISK DMA_FLOPPY
+
+/* Floppy_selects is the list of DOR's to select drive fd
+ *
+ * On initialisation, the floppy list is scanned, and the drives allocated
+ * in the order that they are found. This is done by seeking the drive
+ * to a non-zero track, and then restoring it to track 0. If an error occurs,
+ * then there is no floppy drive present. [to be put back in again]
+ */
+static unsigned char floppy_selects[4] = { 0x10, 0x21, 0x23, 0x33 };
+
+#define FDC1 (0x3f0)
+
+#define FLOPPY0_TYPE 4
+#define FLOPPY1_TYPE 4
+
+#define N_FDC 1
+#define N_DRIVE 4
+
+#define CROSS_64KB(a,s) (0)
+
+/*
+ * This allows people to reverse the order of
+ * fd0 and fd1, in case their hardware is
+ * strangely connected (as some RiscPCs
+ * and A5000s seem to be).
+ */
+static void driveswap(int *ints, int dummy, int dummy2)
+{
+ swap(floppy_selects[0], floppy_selects[1]);
+}
+
+#define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }
+
+#endif