| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 992 | 72.20% | 28 | 53.85% |
| Sam Ravnborg | 202 | 14.70% | 6 | 11.54% |
| Mark Fortescue | 86 | 6.26% | 1 | 1.92% |
| David S. Miller | 42 | 3.06% | 7 | 13.46% |
| Willy Tarreau | 27 | 1.97% | 2 | 3.85% |
| Nicolas Palix | 8 | 0.58% | 1 | 1.92% |
| Bob Breuer | 5 | 0.36% | 1 | 1.92% |
| Stephen Rothwell | 3 | 0.22% | 1 | 1.92% |
| Linus Torvalds | 3 | 0.22% | 1 | 1.92% |
| Andres Salomon | 3 | 0.22% | 1 | 1.92% |
| Greg Kroah-Hartman | 1 | 0.07% | 1 | 1.92% |
| Mike Rapoport | 1 | 0.07% | 1 | 1.92% |
| Jeff Garzik | 1 | 0.07% | 1 | 1.92% |
| Total | 1374 | 52 |
/* SPDX-License-Identifier: GPL-2.0 */ /* asm/floppy.h: Sparc specific parts of the Floppy driver. * * Copyright (C) 1995 David S. Miller (davem@davemloft.net) */ #ifndef __ASM_SPARC_FLOPPY_H #define __ASM_SPARC_FLOPPY_H #include <linux/of.h> #include <linux/of_device.h> #include <linux/pgtable.h> #include <asm/idprom.h> #include <asm/oplib.h> #include <asm/auxio.h> #include <asm/setup.h> #include <asm/page.h> #include <asm/irq.h> /* We don't need no stinkin' I/O port allocation crap. */ #undef release_region #undef request_region #define release_region(X, Y) do { } while(0) #define request_region(X, Y, Z) (1) /* References: * 1) Netbsd Sun floppy driver. * 2) NCR 82077 controller manual * 3) Intel 82077 controller manual */ struct sun_flpy_controller { volatile unsigned char status_82072; /* Main Status reg. */ #define dcr_82072 status_82072 /* Digital Control reg. */ #define status1_82077 status_82072 /* Auxiliary Status reg. 1 */ volatile unsigned char data_82072; /* Data fifo. */ #define status2_82077 data_82072 /* Auxiliary Status reg. 2 */ volatile unsigned char dor_82077; /* Digital Output reg. */ volatile unsigned char tapectl_82077; /* What the? Tape control reg? */ volatile unsigned char status_82077; /* Main Status Register. */ #define drs_82077 status_82077 /* Digital Rate Select reg. */ volatile unsigned char data_82077; /* Data fifo. */ volatile unsigned char ___unused; volatile unsigned char dir_82077; /* Digital Input reg. */ #define dcr_82077 dir_82077 /* Config Control reg. */ }; /* You'll only ever find one controller on a SparcStation anyways. */ static struct sun_flpy_controller *sun_fdc = NULL; struct sun_floppy_ops { unsigned char (*fd_inb)(int port); void (*fd_outb)(unsigned char value, int port); }; static struct sun_floppy_ops sun_fdops; #define fd_inb(base, reg) sun_fdops.fd_inb(reg) #define fd_outb(value, base, reg) sun_fdops.fd_outb(value, reg) #define fd_enable_dma() sun_fd_enable_dma() #define fd_disable_dma() sun_fd_disable_dma() #define fd_request_dma() (0) /* nothing... */ #define fd_free_dma() /* nothing... */ #define fd_clear_dma_ff() /* nothing... */ #define fd_set_dma_mode(mode) sun_fd_set_dma_mode(mode) #define fd_set_dma_addr(addr) sun_fd_set_dma_addr(addr) #define fd_set_dma_count(count) sun_fd_set_dma_count(count) #define fd_enable_irq() /* nothing... */ #define fd_disable_irq() /* nothing... */ #define fd_request_irq() sun_fd_request_irq() #define fd_free_irq() /* nothing... */ #if 0 /* P3: added by Alain, these cause a MMU corruption. 19960524 XXX */ #define fd_dma_mem_alloc(size) ((unsigned long) vmalloc(size)) #define fd_dma_mem_free(addr,size) (vfree((void *)(addr))) #endif /* XXX This isn't really correct. XXX */ #define get_dma_residue(x) (0) #define FLOPPY0_TYPE 4 #define FLOPPY1_TYPE 0 /* Super paranoid... */ #undef HAVE_DISABLE_HLT /* Here is where we catch the floppy driver trying to initialize, * therefore this is where we call the PROM device tree probing * routine etc. on the Sparc. */ #define FDC1 sun_floppy_init() #define N_FDC 1 #define N_DRIVE 8 /* No 64k boundary crossing problems on the Sparc. */ #define CROSS_64KB(a,s) (0) /* Routines unique to each controller type on a Sun. */ static void sun_set_dor(unsigned char value, int fdc_82077) { if (fdc_82077) sun_fdc->dor_82077 = value; } static unsigned char sun_read_dir(void) { return sun_fdc->dir_82077; } static unsigned char sun_82072_fd_inb(int port) { udelay(5); switch (port) { default: printk("floppy: Asked to read unknown port %d\n", port); panic("floppy: Port bolixed."); case FD_STATUS: return sun_fdc->status_82072 & ~STATUS_DMA; case FD_DATA: return sun_fdc->data_82072; case FD_DIR: return sun_read_dir(); } panic("sun_82072_fd_inb: How did I get here?"); } static void sun_82072_fd_outb(unsigned char value, int port) { udelay(5); switch (port) { default: printk("floppy: Asked to write to unknown port %d\n", port); panic("floppy: Port bolixed."); case FD_DOR: sun_set_dor(value, 0); break; case FD_DATA: sun_fdc->data_82072 = value; break; case FD_DCR: sun_fdc->dcr_82072 = value; break; case FD_DSR: sun_fdc->status_82072 = value; break; } return; } static unsigned char sun_82077_fd_inb(int port) { udelay(5); switch (port) { default: printk("floppy: Asked to read unknown port %d\n", port); panic("floppy: Port bolixed."); case FD_SRA: return sun_fdc->status1_82077; case FD_SRB: return sun_fdc->status2_82077; case FD_DOR: return sun_fdc->dor_82077; case FD_TDR: return sun_fdc->tapectl_82077; case FD_STATUS: return sun_fdc->status_82077 & ~STATUS_DMA; case FD_DATA: return sun_fdc->data_82077; case FD_DIR: return sun_read_dir(); } panic("sun_82077_fd_inb: How did I get here?"); } static void sun_82077_fd_outb(unsigned char value, int port) { udelay(5); switch (port) { default: printk("floppy: Asked to write to unknown port %d\n", port); panic("floppy: Port bolixed."); case FD_DOR: sun_set_dor(value, 1); break; case FD_DATA: sun_fdc->data_82077 = value; break; case FD_DCR: sun_fdc->dcr_82077 = value; break; case FD_DSR: sun_fdc->status_82077 = value; break; case FD_TDR: sun_fdc->tapectl_82077 = value; break; } return; } /* For pseudo-dma (Sun floppy drives have no real DMA available to * them so we must eat the data fifo bytes directly ourselves) we have * three state variables. doing_pdma tells our inline low-level * assembly floppy interrupt entry point whether it should sit and eat * bytes from the fifo or just transfer control up to the higher level * floppy interrupt c-code. I tried very hard but I could not get the * pseudo-dma to work in c-code without getting many overruns and * underruns. If non-zero, doing_pdma encodes the direction of * the transfer for debugging. 1=read 2=write */ /* Common routines to all controller types on the Sparc. */ static inline void virtual_dma_init(void) { /* nothing... */ } static inline void sun_fd_disable_dma(void) { doing_pdma = 0; pdma_base = NULL; } static inline void sun_fd_set_dma_mode(int mode) { switch(mode) { case DMA_MODE_READ: doing_pdma = 1; break; case DMA_MODE_WRITE: doing_pdma = 2; break; default: printk("Unknown dma mode %d\n", mode); panic("floppy: Giving up..."); } } static inline void sun_fd_set_dma_addr(char *buffer) { pdma_vaddr = buffer; } static inline void sun_fd_set_dma_count(int length) { pdma_size = length; } static inline void sun_fd_enable_dma(void) { pdma_base = pdma_vaddr; pdma_areasize = pdma_size; } int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler); static int sun_fd_request_irq(void) { static int once = 0; if (!once) { once = 1; return sparc_floppy_request_irq(FLOPPY_IRQ, floppy_interrupt); } else { return 0; } } static struct linux_prom_registers fd_regs[2]; static int sun_floppy_init(void) { struct platform_device *op; struct device_node *dp; struct resource r; char state[128]; phandle fd_node; phandle tnode; int num_regs; use_virtual_dma = 1; /* Forget it if we aren't on a machine that could possibly * ever have a floppy drive. */ if (sparc_cpu_model != sun4m) { /* We certainly don't have a floppy controller. */ goto no_sun_fdc; } /* Well, try to find one. */ tnode = prom_getchild(prom_root_node); fd_node = prom_searchsiblings(tnode, "obio"); if (fd_node != 0) { tnode = prom_getchild(fd_node); fd_node = prom_searchsiblings(tnode, "SUNW,fdtwo"); } else { fd_node = prom_searchsiblings(tnode, "fd"); } if (fd_node == 0) { goto no_sun_fdc; } /* The sun4m lets us know if the controller is actually usable. */ if (prom_getproperty(fd_node, "status", state, sizeof(state)) != -1) { if(!strcmp(state, "disabled")) { goto no_sun_fdc; } } num_regs = prom_getproperty(fd_node, "reg", (char *) fd_regs, sizeof(fd_regs)); num_regs = (num_regs / sizeof(fd_regs[0])); prom_apply_obio_ranges(fd_regs, num_regs); memset(&r, 0, sizeof(r)); r.flags = fd_regs[0].which_io; r.start = fd_regs[0].phys_addr; sun_fdc = of_ioremap(&r, 0, fd_regs[0].reg_size, "floppy"); /* Look up irq in platform_device. * We try "SUNW,fdtwo" and "fd" */ op = NULL; for_each_node_by_name(dp, "SUNW,fdtwo") { op = of_find_device_by_node(dp); if (op) break; } if (!op) { for_each_node_by_name(dp, "fd") { op = of_find_device_by_node(dp); if (op) break; } } if (!op) goto no_sun_fdc; FLOPPY_IRQ = op->archdata.irqs[0]; /* Last minute sanity check... */ if (sun_fdc->status_82072 == 0xff) { sun_fdc = NULL; goto no_sun_fdc; } sun_fdops.fd_inb = sun_82077_fd_inb; sun_fdops.fd_outb = sun_82077_fd_outb; fdc_status = &sun_fdc->status_82077; if (sun_fdc->dor_82077 == 0x80) { sun_fdc->dor_82077 = 0x02; if (sun_fdc->dor_82077 == 0x80) { sun_fdops.fd_inb = sun_82072_fd_inb; sun_fdops.fd_outb = sun_82072_fd_outb; fdc_status = &sun_fdc->status_82072; } } /* Success... */ allowed_drive_mask = 0x01; return (int) sun_fdc; no_sun_fdc: return -1; } static int sparc_eject(void) { set_dor(0x00, 0xff, 0x90); udelay(500); set_dor(0x00, 0x6f, 0x00); udelay(500); return 0; } #define fd_eject(drive) sparc_eject() #define EXTRA_FLOPPY_PARAMS static DEFINE_SPINLOCK(dma_spin_lock); #define claim_dma_lock() \ ({ unsigned long flags; \ spin_lock_irqsave(&dma_spin_lock, flags); \ flags; \ }) #define release_dma_lock(__flags) \ spin_unlock_irqrestore(&dma_spin_lock, __flags); #endif /* !(__ASM_SPARC_FLOPPY_H) */
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