^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Architecture specific parts of the Floppy driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 1995
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef __ASM_ALPHA_FLOPPY_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define __ASM_ALPHA_FLOPPY_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define fd_inb(base, reg) inb_p((base) + (reg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define fd_outb(value, base, reg) outb_p(value, (base) + (reg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define fd_enable_dma() enable_dma(FLOPPY_DMA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define fd_disable_dma() disable_dma(FLOPPY_DMA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define fd_request_dma() request_dma(FLOPPY_DMA,"floppy")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define fd_free_dma() free_dma(FLOPPY_DMA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA,mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define fd_set_dma_addr(addr) set_dma_addr(FLOPPY_DMA,virt_to_bus(addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA,count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define fd_enable_irq() enable_irq(FLOPPY_IRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define fd_disable_irq() disable_irq(FLOPPY_IRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define fd_request_irq() request_irq(FLOPPY_IRQ, floppy_interrupt,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 0, "floppy", NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #ifdef CONFIG_PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define fd_dma_setup(addr,size,mode,io) alpha_fd_dma_setup(addr,size,mode,io)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static __inline__ int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) alpha_fd_dma_setup(char *addr, unsigned long size, int mode, int io)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static unsigned long prev_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static dma_addr_t bus_addr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static char *prev_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int prev_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) dir = (mode != DMA_MODE_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (bus_addr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) && (addr != prev_addr || size != prev_size || dir != prev_dir)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /* different from last time -- unmap prev */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) pci_unmap_single(isa_bridge, bus_addr, prev_size, prev_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) bus_addr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (!bus_addr) /* need to map it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) bus_addr = pci_map_single(isa_bridge, addr, size, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* remember this one as prev */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) prev_addr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) prev_size = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) prev_dir = dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) fd_clear_dma_ff();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) fd_set_dma_mode(mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) set_dma_addr(FLOPPY_DMA, bus_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) fd_set_dma_count(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) virtual_dma_port = io;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) fd_enable_dma();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #endif /* CONFIG_PCI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) __inline__ void virtual_dma_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* Nothing to do on an Alpha */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int FDC1 = 0x3f0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static int FDC2 = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * Again, the CMOS information doesn't work on the alpha..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define FLOPPY0_TYPE 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define FLOPPY1_TYPE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define N_FDC 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define N_DRIVE 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * Most Alphas have no problems with floppy DMA crossing 64k borders,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * except for certain ones, like XL and RUFFIAN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * However, the test is simple and fast, and this *is* floppy, after all,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * so we do it for all platforms, just to make sure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * This is advantageous in other circumstances as well, as in moving
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * about the PCI DMA windows and forcing the floppy to start doing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * scatter-gather when it never had before, and there *is* a problem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * on that platform... ;-}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static inline unsigned long CROSS_64KB(void *a, unsigned long s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) unsigned long p = (unsigned long)a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return ((p + s - 1) ^ p) & ~0xffffUL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define EXTRA_FLOPPY_PARAMS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #endif /* __ASM_ALPHA_FLOPPY_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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