/*
* Copyright (c) 2024 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup pc-floppy
* @{
*/
/** @file PC floppy disk driver
*/
#ifndef PC_FLOPPY_H
#define PC_FLOPPY_H
#include <bd_srv.h>
#include <ddf/driver.h>
#include <fibril_synch.h>
#include <stdbool.h>
#include <stdint.h>
#include "pc-floppy_hw.h"
#define NAME "pc-floppy"
/** PC floppy controller hardware resources */
typedef struct {
/** I/O registers */
uintptr_t regs;
/** IRQ */
int irq;
/** DMA channel */
int dma;
} pc_fdc_hwres_t;
/** PC floppy disk controller */
typedef struct pc_fdc {
/** DDF device */
ddf_dev_t *dev;
/** I/O base address of the registers */
uintptr_t regs_physical;
/** Command registers */
pc_fdc_regs_t *regs;
/** IRQ (-1 if not used) */
int irq;
/** DMA (-1 if not used) */
int dma;
/** IRQ handle */
cap_irq_handle_t ihandle;
/** DMA buffer */
void *dma_buf;
/** DMA buffer physical address */
uintptr_t dma_buf_pa;
/** DMA buffer size */
size_t dma_buf_size;
/** Synchronize controller access */
fibril_mutex_t lock;
struct pc_fdc_drive *drive[2];
} pc_fdc_t;
/** PC floppy drive */
typedef struct pc_fdc_drive {
pc_fdc_t *fdc;
ddf_fun_t *fun;
void *charg;
size_t sec_size;
unsigned cylinders;
unsigned heads;
unsigned sectors;
bd_srvs_t bds;
} pc_fdc_drive_t;
extern errno_t pc_fdc_create(ddf_dev_t *, pc_fdc_hwres_t *, pc_fdc_t **);
extern errno_t pc_fdc_destroy(pc_fdc_t *);
#endif
/** @}
*/