/* SPDX-License-Identifier: GPL-2.0 */ /* parport.h: sparc64 specific parport initialization and dma. * * Copyright (C) 1999 Eddie C. Dost (ecd@skynet.be) */ #ifndef _ASM_SPARC64_PARPORT_H #define _ASM_SPARC64_PARPORT_H 1 #include <linux/of_device.h> #include <asm/ebus_dma.h> #include <asm/ns87303.h> #include <asm/prom.h> #define PARPORT_PC_MAX_PORTS PARPORT_MAX /* * While sparc64 doesn't have an ISA DMA API, we provide something that looks * close enough to make parport_pc happy */ #define HAS_DMA #ifdef CONFIG_PARPORT_PC_FIFO 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 static struct sparc_ebus_info { struct ebus_dma_info info; unsigned int addr; unsigned int count; int lock; struct parport *port; } sparc_ebus_dmas[PARPORT_PC_MAX_PORTS]; static DECLARE_BITMAP(dma_slot_map, PARPORT_PC_MAX_PORTS); static inline int request_dma(unsigned int dmanr, const char *device_id) { if (dmanr >= PARPORT_PC_MAX_PORTS) return -EINVAL; if (xchg(&sparc_ebus_dmas[dmanr].lock, 1) != 0) return -EBUSY; return 0; } static inline void free_dma(unsigned int dmanr) { if (dmanr >= PARPORT_PC_MAX_PORTS) { printk(KERN_WARNING "Trying to free DMA%d\n", dmanr); return; } if (xchg(&sparc_ebus_dmas[dmanr].lock, 0) == 0) { printk(KERN_WARNING "Trying to free free DMA%d\n", dmanr); return; } } static inline void enable_dma(unsigned int dmanr) { ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1); if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info, sparc_ebus_dmas[dmanr].addr, sparc_ebus_dmas[dmanr].count)) BUG(); } static inline void disable_dma(unsigned int dmanr) { ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 0); } static inline void clear_dma_ff(unsigned int dmanr) { /* nothing */ } static inline void set_dma_mode(unsigned int dmanr, char mode) { ebus_dma_prepare(&sparc_ebus_dmas[dmanr].info, (mode != DMA_MODE_WRITE)); } static inline void set_dma_addr(unsigned int dmanr, unsigned int addr) { sparc_ebus_dmas[dmanr].addr = addr; } static inline void set_dma_count(unsigned int dmanr, unsigned int count) { sparc_ebus_dmas[dmanr].count = count; } static inline unsigned int get_dma_residue(unsigned int dmanr) { return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info); } static int ecpp_probe(struct platform_device *op) { unsigned long base = op->resource[0].start; unsigned long config = op->resource[1].start; unsigned long d_base = op->resource[2].start; unsigned long d_len; struct device_node *parent; struct parport *p; int slot, err; parent = op->dev.of_node->parent; if (!strcmp(parent->name, "dma")) { p = parport_pc_probe_port(base, base + 0x400, op->archdata.irqs[0], PARPORT_DMA_NOFIFO, op->dev.parent->parent, 0); if (!p) return -ENOMEM; dev_set_drvdata(&op->dev, p); return 0; } for (slot = 0; slot < PARPORT_PC_MAX_PORTS; slot++) { if (!test_and_set_bit(slot, dma_slot_map)) break; } err = -ENODEV; if (slot >= PARPORT_PC_MAX_PORTS) goto out_err; spin_lock_init(&sparc_ebus_dmas[slot].info.lock); d_len = (op->resource[2].end - d_base) + 1UL; sparc_ebus_dmas[slot].info.regs = of_ioremap(&op->resource[2], 0, d_len, "ECPP DMA"); if (!sparc_ebus_dmas[slot].info.regs) goto out_clear_map; sparc_ebus_dmas[slot].info.flags = 0; sparc_ebus_dmas[slot].info.callback = NULL; sparc_ebus_dmas[slot].info.client_cookie = NULL; sparc_ebus_dmas[slot].info.irq = 0xdeadbeef; strcpy(sparc_ebus_dmas[slot].info.name, "parport"); if (ebus_dma_register(&sparc_ebus_dmas[slot].info)) goto out_unmap_regs; ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 1); /* Configure IRQ to Push Pull, Level Low */ /* Enable ECP, set bit 2 of the CTR first */ outb(0x04, base + 0x02); ns87303_modify(config, PCR, PCR_EPP_ENABLE | PCR_IRQ_ODRAIN, PCR_ECP_ENABLE | PCR_ECP_CLK_ENA | PCR_IRQ_POLAR); /* CTR bit 5 controls direction of port */ ns87303_modify(config, PTR, 0, PTR_LPT_REG_DIR); p = parport_pc_probe_port(base, base + 0x400, op->archdata.irqs[0], slot, op->dev.parent, 0); err = -ENOMEM; if (!p) goto out_disable_irq; dev_set_drvdata(&op->dev, p); return 0; out_disable_irq: ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0); ebus_dma_unregister(&sparc_ebus_dmas[slot].info); out_unmap_regs: of_iounmap(&op->resource[2], sparc_ebus_dmas[slot].info.regs, d_len); out_clear_map: clear_bit(slot, dma_slot_map); out_err: return err; } static int ecpp_remove(struct platform_device *op) { struct parport *p = dev_get_drvdata(&op->dev); int slot = p->dma; parport_pc_unregister_port(p); if (slot != PARPORT_DMA_NOFIFO) { unsigned long d_base = op->resource[2].start; unsigned long d_len; d_len = (op->resource[2].end - d_base) + 1UL; ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0); ebus_dma_unregister(&sparc_ebus_dmas[slot].info); of_iounmap(&op->resource[2], sparc_ebus_dmas[slot].info.regs, d_len); clear_bit(slot, dma_slot_map); } return 0; } static const struct of_device_id ecpp_match[] = { { .name = "ecpp", }, { .name = "parallel", .compatible = "ecpp", }, { .name = "parallel", .compatible = "ns87317-ecpp", }, { .name = "parallel", .compatible = "pnpALI,1533,3", }, {}, }; static struct platform_driver ecpp_driver = { .driver = { .name = "ecpp", .of_match_table = ecpp_match, }, .probe = ecpp_probe, .remove = ecpp_remove, }; static int parport_pc_find_nonpci_ports(int autoirq, int autodma) { return platform_driver_register(&ecpp_driver); } #endif /* !(_ASM_SPARC64_PARPORT_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 491 B | 0644 |
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agp.h | File | 434 B | 0644 |
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apb.h | File | 1.06 KB | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-prototypes.h | File | 727 B | 0644 |
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asm.h | File | 1.08 KB | 0644 |
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asmmacro.h | File | 1.16 KB | 0644 |
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atomic.h | File | 219 B | 0644 |
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atomic_32.h | File | 2.26 KB | 0644 |
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atomic_64.h | File | 3.34 KB | 0644 |
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auxio.h | File | 310 B | 0644 |
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auxio_32.h | File | 2.55 KB | 0644 |
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auxio_64.h | File | 3.18 KB | 0644 |
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backoff.h | File | 2.7 KB | 0644 |
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barrier.h | File | 223 B | 0644 |
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barrier_32.h | File | 160 B | 0644 |
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barrier_64.h | File | 1.96 KB | 0644 |
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bbc.h | File | 9.76 KB | 0644 |
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bitext.h | File | 631 B | 0644 |
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bitops.h | File | 219 B | 0644 |
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bitops_32.h | File | 2.79 KB | 0644 |
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bitops_64.h | File | 1.64 KB | 0644 |
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btext.h | File | 145 B | 0644 |
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bug.h | File | 588 B | 0644 |
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bugs.h | File | 404 B | 0644 |
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cache.h | File | 649 B | 0644 |
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cacheflush.h | File | 373 B | 0644 |
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cacheflush_32.h | File | 1.97 KB | 0644 |
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cacheflush_64.h | File | 2.56 KB | 0644 |
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cachetlb_32.h | File | 882 B | 0644 |
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chafsr.h | File | 9.48 KB | 0644 |
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checksum.h | File | 227 B | 0644 |
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checksum_32.h | File | 6.81 KB | 0644 |
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checksum_64.h | File | 4.4 KB | 0644 |
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chmctrl.h | File | 7.91 KB | 0644 |
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clock.h | File | 231 B | 0644 |
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clocksource.h | File | 407 B | 0644 |
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cmpxchg.h | File | 223 B | 0644 |
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cmpxchg_32.h | File | 2.4 KB | 0644 |
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cmpxchg_64.h | File | 5.13 KB | 0644 |
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compat.h | File | 6.45 KB | 0644 |
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compat_signal.h | File | 565 B | 0644 |
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contregs.h | File | 1.9 KB | 0644 |
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cpu_type.h | File | 579 B | 0644 |
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cpudata.h | File | 378 B | 0644 |
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cpudata_32.h | File | 729 B | 0644 |
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cpudata_64.h | File | 1.13 KB | 0644 |
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current.h | File | 991 B | 0644 |
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dcr.h | File | 728 B | 0644 |
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dcu.h | File | 1.48 KB | 0644 |
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delay.h | File | 215 B | 0644 |
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delay_32.h | File | 907 B | 0644 |
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delay_64.h | File | 403 B | 0644 |
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device.h | File | 565 B | 0644 |
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dma-mapping.h | File | 632 B | 0644 |
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dma.h | File | 6.6 KB | 0644 |
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ebus_dma.h | File | 1.07 KB | 0644 |
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ecc.h | File | 4.34 KB | 0644 |
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eeprom.h | File | 254 B | 0644 |
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elf.h | File | 207 B | 0644 |
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elf_32.h | File | 3.19 KB | 0644 |
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elf_64.h | File | 6.47 KB | 0644 |
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estate.h | File | 2.23 KB | 0644 |
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extable_64.h | File | 727 B | 0644 |
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fb.h | File | 680 B | 0644 |
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fbio.h | File | 2.26 KB | 0644 |
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fhc.h | File | 4.43 KB | 0644 |
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floppy.h | File | 219 B | 0644 |
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floppy_32.h | File | 9.74 KB | 0644 |
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floppy_64.h | File | 18.83 KB | 0644 |
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fpumacro.h | File | 710 B | 0644 |
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ftrace.h | File | 800 B | 0644 |
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futex.h | File | 215 B | 0644 |
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futex_32.h | File | 82 B | 0644 |
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futex_64.h | File | 2.15 KB | 0644 |
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hardirq.h | File | 223 B | 0644 |
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hardirq_32.h | File | 334 B | 0644 |
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hardirq_64.h | File | 417 B | 0644 |
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head.h | File | 211 B | 0644 |
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head_32.h | File | 2.56 KB | 0644 |
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head_64.h | File | 2.13 KB | 0644 |
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hibernate.h | File | 421 B | 0644 |
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highmem.h | File | 2.02 KB | 0644 |
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hugetlb.h | File | 2.09 KB | 0644 |
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hvtramp.h | File | 782 B | 0644 |
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hw_irq.h | File | 88 B | 0644 |
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hypervisor.h | File | 110.71 KB | 0644 |
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ide.h | File | 2.19 KB | 0644 |
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idprom.h | File | 656 B | 0644 |
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intr_queue.h | File | 794 B | 0644 |
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io-unit.h | File | 2.41 KB | 0644 |
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io.h | File | 620 B | 0644 |
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io_32.h | File | 3.51 KB | 0644 |
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io_64.h | File | 10.66 KB | 0644 |
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ioctls.h | File | 358 B | 0644 |
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iommu.h | File | 215 B | 0644 |
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iommu_32.h | File | 5.73 KB | 0644 |
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iommu_64.h | File | 2.43 KB | 0644 |
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irq.h | File | 207 B | 0644 |
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irq_32.h | File | 526 B | 0644 |
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irq_64.h | File | 3.06 KB | 0644 |
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irqflags.h | File | 227 B | 0644 |
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irqflags_32.h | File | 1.03 KB | 0644 |
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irqflags_64.h | File | 1.91 KB | 0644 |
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jump_label.h | File | 1.01 KB | 0644 |
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kdebug.h | File | 219 B | 0644 |
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kdebug_32.h | File | 1.99 KB | 0644 |
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kdebug_64.h | File | 393 B | 0644 |
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kgdb.h | File | 1014 B | 0644 |
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kmap_types.h | File | 233 B | 0644 |
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kprobes.h | File | 1.41 KB | 0644 |
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ldc.h | File | 4.37 KB | 0644 |
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leon.h | File | 7.37 KB | 0644 |
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leon_amba.h | File | 8.09 KB | 0644 |
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leon_pci.h | File | 512 B | 0644 |
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lsu.h | File | 1.04 KB | 0644 |
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machines.h | File | 1.5 KB | 0644 |
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mbus.h | File | 2.93 KB | 0644 |
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mc146818rtc.h | File | 298 B | 0644 |
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mc146818rtc_32.h | File | 699 B | 0644 |
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mc146818rtc_64.h | File | 689 B | 0644 |
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mdesc.h | File | 2.99 KB | 0644 |
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memctrl.h | File | 311 B | 0644 |
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mman.h | File | 304 B | 0644 |
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mmu.h | File | 207 B | 0644 |
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mmu_32.h | File | 209 B | 0644 |
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mmu_64.h | File | 3.14 KB | 0644 |
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mmu_context.h | File | 239 B | 0644 |
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mmu_context_32.h | File | 1.07 KB | 0644 |
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mmu_context_64.h | File | 4.15 KB | 0644 |
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mmzone.h | File | 393 B | 0644 |
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msi.h | File | 774 B | 0644 |
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mxcc.h | File | 4.33 KB | 0644 |
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nmi.h | File | 354 B | 0644 |
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ns87303.h | File | 3.22 KB | 0644 |
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obio.h | File | 6.26 KB | 0644 |
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openprom.h | File | 7.3 KB | 0644 |
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oplib.h | File | 215 B | 0644 |
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oplib_32.h | File | 5.92 KB | 0644 |
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oplib_64.h | File | 8.12 KB | 0644 |
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page.h | File | 274 B | 0644 |
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page_32.h | File | 3.91 KB | 0644 |
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page_64.h | File | 4.49 KB | 0644 |
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parport.h | File | 5.68 KB | 0644 |
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pbm.h | File | 1.47 KB | 0644 |
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pci.h | File | 207 B | 0644 |
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pci_32.h | File | 1.09 KB | 0644 |
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pci_64.h | File | 1.49 KB | 0644 |
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pcic.h | File | 5.77 KB | 0644 |
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pcr.h | File | 1.85 KB | 0644 |
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percpu.h | File | 219 B | 0644 |
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percpu_32.h | File | 168 B | 0644 |
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percpu_64.h | File | 515 B | 0644 |
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perf_event.h | File | 802 B | 0644 |
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pgalloc.h | File | 223 B | 0644 |
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pgalloc_32.h | File | 1.91 KB | 0644 |
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pgalloc_64.h | File | 2.85 KB | 0644 |
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pgtable.h | File | 223 B | 0644 |
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pgtable_32.h | File | 11.35 KB | 0644 |
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pgtable_64.h | File | 30.71 KB | 0644 |
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pgtsrmmu.h | File | 6.05 KB | 0644 |
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pil.h | File | 1.08 KB | 0644 |
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processor.h | File | 231 B | 0644 |
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processor_32.h | File | 3.13 KB | 0644 |
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processor_64.h | File | 7.58 KB | 0644 |
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prom.h | File | 2.02 KB | 0644 |
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psr.h | File | 1.38 KB | 0644 |
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ptrace.h | File | 4.19 KB | 0644 |
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qrwlock.h | File | 205 B | 0644 |
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qspinlock.h | File | 215 B | 0644 |
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ross.h | File | 5.52 KB | 0644 |
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sbi.h | File | 3.34 KB | 0644 |
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scratchpad.h | File | 547 B | 0644 |
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seccomp.h | File | 225 B | 0644 |
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sections.h | File | 289 B | 0644 |
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setup.h | File | 1.52 KB | 0644 |
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sfafsr.h | File | 3.14 KB | 0644 |
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sfp-machine.h | File | 239 B | 0644 |
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sfp-machine_32.h | File | 6.79 KB | 0644 |
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sfp-machine_64.h | File | 3.1 KB | 0644 |
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shmparam.h | File | 227 B | 0644 |
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shmparam_32.h | File | 253 B | 0644 |
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shmparam_64.h | File | 306 B | 0644 |
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sigcontext.h | File | 2.55 KB | 0644 |
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signal.h | File | 835 B | 0644 |
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smp.h | File | 207 B | 0644 |
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smp_32.h | File | 3.29 KB | 0644 |
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smp_64.h | File | 1.84 KB | 0644 |
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sparsemem.h | File | 349 B | 0644 |
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spinlock.h | File | 227 B | 0644 |
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spinlock_32.h | File | 4.22 KB | 0644 |
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spinlock_64.h | File | 409 B | 0644 |
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spinlock_types.h | File | 549 B | 0644 |
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spitfire.h | File | 9.73 KB | 0644 |
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stacktrace.h | File | 166 B | 0644 |
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starfire.h | File | 418 B | 0644 |
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string.h | File | 1.13 KB | 0644 |
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string_32.h | File | 405 B | 0644 |
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string_64.h | File | 505 B | 0644 |
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sunbpp.h | File | 3.27 KB | 0644 |
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swift.h | File | 3.07 KB | 0644 |
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switch_to.h | File | 231 B | 0644 |
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switch_to_32.h | File | 3.53 KB | 0644 |
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switch_to_64.h | File | 2.58 KB | 0644 |
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syscall.h | File | 3.41 KB | 0644 |
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syscalls.h | File | 307 B | 0644 |
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termbits.h | File | 198 B | 0644 |
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termios.h | File | 4.94 KB | 0644 |
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thread_info.h | File | 239 B | 0644 |
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thread_info_32.h | File | 3.66 KB | 0644 |
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thread_info_64.h | File | 7.84 KB | 0644 |
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timer.h | File | 215 B | 0644 |
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timer_32.h | File | 1.18 KB | 0644 |
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timer_64.h | File | 2.37 KB | 0644 |
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timex.h | File | 215 B | 0644 |
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timex_32.h | File | 266 B | 0644 |
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timex_64.h | File | 423 B | 0644 |
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tlb.h | File | 207 B | 0644 |
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tlb_32.h | File | 520 B | 0644 |
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tlb_64.h | File | 913 B | 0644 |
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tlbflush.h | File | 227 B | 0644 |
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tlbflush_32.h | File | 621 B | 0644 |
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tlbflush_64.h | File | 1.73 KB | 0644 |
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topology.h | File | 227 B | 0644 |
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topology_32.h | File | 170 B | 0644 |
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topology_64.h | File | 1.51 KB | 0644 |
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trap_block.h | File | 6.51 KB | 0644 |
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traps.h | File | 577 B | 0644 |
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tsb.h | File | 12.17 KB | 0644 |
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tsunami.h | File | 1.85 KB | 0644 |
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ttable.h | File | 20.08 KB | 0644 |
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turbosparc.h | File | 3.78 KB | 0644 |
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uaccess.h | File | 363 B | 0644 |
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uaccess_32.h | File | 8.31 KB | 0644 |
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uaccess_64.h | File | 6.05 KB | 0644 |
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unaligned.h | File | 339 B | 0644 |
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unistd.h | File | 1.37 KB | 0644 |
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upa.h | File | 3.72 KB | 0644 |
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uprobes.h | File | 1.86 KB | 0644 |
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user.h | File | 102 B | 0644 |
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vaddrs.h | File | 2.02 KB | 0644 |
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vdso.h | File | 662 B | 0644 |
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vga.h | File | 964 B | 0644 |
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viking.h | File | 8.14 KB | 0644 |
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vio.h | File | 11.81 KB | 0644 |
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visasm.h | File | 1.51 KB | 0644 |
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vvar.h | File | 1.52 KB | 0644 |
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winmacro.h | File | 4.66 KB | 0644 |
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xor.h | File | 207 B | 0644 |
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xor_32.h | File | 7.31 KB | 0644 |
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xor_64.h | File | 2.5 KB | 0644 |
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