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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202/* SPDX-License-Identifier: GPL-2.0-only *//* * cb710/cb710.h * * Copyright by Michał Mirosław, 2008-2009 */#ifndef LINUX_CB710_DRIVER_H#define LINUX_CB710_DRIVER_H
#include <linux/io.h>#include <linux/interrupt.h>#include <linux/spinlock.h>#include <linux/pci.h>#include <linux/platform_device.h>#include <linux/mmc/host.h>
struct cb710_slot;
typedef int (*cb710_irq_handler_t)(struct cb710_slot *);
/* per-virtual-slot structure */struct cb710_slot { struct platform_device pdev; void __iomem *iobase; cb710_irq_handler_t irq_handler;};
/* per-device structure */struct cb710_chip { struct pci_dev *pdev; void __iomem *iobase; unsigned platform_id;#ifdef CONFIG_CB710_DEBUG_ASSUMPTIONS atomic_t slot_refs_count;#endif unsigned slot_mask; unsigned slots; spinlock_t irq_lock; struct cb710_slot slot[];};
/* NOTE: cb710_chip.slots is modified only during device init/exit and * they are all serialized wrt themselves */
/* cb710_chip.slot_mask values */#define CB710_SLOT_MMC 1#define CB710_SLOT_MS 2#define CB710_SLOT_SM 4
/* slot port accessors - so the logic is more clear in the code */#define CB710_PORT_ACCESSORS(t) \static inline void cb710_write_port_##t(struct cb710_slot *slot, \ unsigned port, u##t value) \{ \ iowrite##t(value, slot->iobase + port); \} \ \static inline u##t cb710_read_port_##t(struct cb710_slot *slot, \ unsigned port) \{ \ return ioread##t(slot->iobase + port); \} \ \static inline void cb710_modify_port_##t(struct cb710_slot *slot, \ unsigned port, u##t set, u##t clear) \{ \ iowrite##t( \ (ioread##t(slot->iobase + port) & ~clear)|set, \ slot->iobase + port); \}
CB710_PORT_ACCESSORS(8)CB710_PORT_ACCESSORS(16)CB710_PORT_ACCESSORS(32)
void cb710_pci_update_config_reg(struct pci_dev *pdev, int reg, uint32_t and, uint32_t xor);void cb710_set_irq_handler(struct cb710_slot *slot, cb710_irq_handler_t handler);
/* some device struct walking */
static inline struct cb710_slot *cb710_pdev_to_slot( struct platform_device *pdev){ return container_of(pdev, struct cb710_slot, pdev);}
static inline struct cb710_chip *cb710_slot_to_chip(struct cb710_slot *slot){ return dev_get_drvdata(slot->pdev.dev.parent);}
static inline struct device *cb710_slot_dev(struct cb710_slot *slot){ return &slot->pdev.dev;}
static inline struct device *cb710_chip_dev(struct cb710_chip *chip){ return &chip->pdev->dev;}
/* debugging aids */
#ifdef CONFIG_CB710_DEBUGvoid cb710_dump_regs(struct cb710_chip *chip, unsigned dump);#else#define cb710_dump_regs(c, d) do {} while (0)#endif
#define CB710_DUMP_REGS_MMC 0x0F#define CB710_DUMP_REGS_MS 0x30#define CB710_DUMP_REGS_SM 0xC0#define CB710_DUMP_REGS_ALL 0xFF#define CB710_DUMP_REGS_MASK 0xFF
#define CB710_DUMP_ACCESS_8 0x100#define CB710_DUMP_ACCESS_16 0x200#define CB710_DUMP_ACCESS_32 0x400#define CB710_DUMP_ACCESS_ALL 0x700#define CB710_DUMP_ACCESS_MASK 0x700
#endif /* LINUX_CB710_DRIVER_H *//* * cb710/sgbuf2.h * * Copyright by Michał Mirosław, 2008-2009 */#ifndef LINUX_CB710_SG_H#define LINUX_CB710_SG_H
#include <linux/highmem.h>#include <linux/scatterlist.h>
/* * 32-bit PIO mapping sg iterator * * Hides scatterlist access issues - fragment boundaries, alignment, page * mapping - for drivers using 32-bit-word-at-a-time-PIO (ie. PCI devices * without DMA support). * * Best-case reading (transfer from device): * sg_miter_start(, SG_MITER_TO_SG); * cb710_sg_dwiter_write_from_io(); * sg_miter_stop(); * * Best-case writing (transfer to device): * sg_miter_start(, SG_MITER_FROM_SG); * cb710_sg_dwiter_read_to_io(); * sg_miter_stop(); */
uint32_t cb710_sg_dwiter_read_next_block(struct sg_mapping_iter *miter);void cb710_sg_dwiter_write_next_block(struct sg_mapping_iter *miter, uint32_t data);
/** * cb710_sg_dwiter_write_from_io - transfer data to mapped buffer from 32-bit IO port * @miter: sg mapping iter * @port: PIO port - IO or MMIO address * @count: number of 32-bit words to transfer * * Description: * Reads @count 32-bit words from register @port and stores it in * buffer iterated by @miter. Data that would overflow the buffer * is silently ignored. Iterator is advanced by 4*@count bytes * or to the buffer's end whichever is closer. * * Context: * IRQ disabled if the SG_MITER_ATOMIC is set. Don't care otherwise. */static inline void cb710_sg_dwiter_write_from_io(struct sg_mapping_iter *miter, void __iomem *port, size_t count){ while (count-- > 0) cb710_sg_dwiter_write_next_block(miter, ioread32(port));}
/** * cb710_sg_dwiter_read_to_io - transfer data to 32-bit IO port from mapped buffer * @miter: sg mapping iter * @port: PIO port - IO or MMIO address * @count: number of 32-bit words to transfer * * Description: * Writes @count 32-bit words to register @port from buffer iterated * through @miter. If buffer ends before @count words are written * missing data is replaced by zeroes. @miter is advanced by 4*@count * bytes or to the buffer's end whichever is closer. * * Context: * IRQ disabled if the SG_MITER_ATOMIC is set. Don't care otherwise. */static inline void cb710_sg_dwiter_read_to_io(struct sg_mapping_iter *miter, void __iomem *port, size_t count){ while (count-- > 0) iowrite32(cb710_sg_dwiter_read_next_block(miter), port);}
#endif /* LINUX_CB710_SG_H */