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/* *********************************************************************
* Broadcom Common Firmware Environment (CFE)
*
* ATAPI device driver File: dev_atapi.c
*
* This is a simple driver for ATAPI devices. The disks
* are expected to be connected to the generic bus (this
* driver doesn't support PCI).
*
* Author: Mitch Lichtenberg (mpl@broadcom.com)
*
*********************************************************************
*
* Copyright 2000,2001,2002,2003
* Broadcom Corporation. All rights reserved.
*
* This software is furnished under license and may be used and
* copied only in accordance with the following terms and
* conditions. Subject to these conditions, you may download,
* copy, install, use, modify and distribute modified or unmodified
* copies of this software in source and/or binary form. No title
* or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce
* and retain this copyright notice and list of conditions
* as they appear in the source file.
*
* 2) No right is granted to use any trade name, trademark, or
* logo of Broadcom Corporation. The "Broadcom Corporation"
* name may not be used to endorse or promote products derived
* from this software without the prior written permission of
* Broadcom Corporation.
*
* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
* SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
* PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR 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), EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
********************************************************************* */
#include "sbmips.h"
#include "lib_types.h"
#include "lib_malloc.h"
#include "lib_printf.h"
#include "lib_string.h"
#include "cfe_timer.h"
#include "cfe_iocb.h"
#include "cfe_device.h"
#include "cfe_ioctl.h"
#include "dev_ide_common.h"
/* *********************************************************************
* Macros
********************************************************************* */
#define GETWORD_LE(buf,wordidx) (((unsigned int) (buf)[(wordidx)*2]) + \
(((unsigned int) (buf)[(wordidx)*2+1]) << 8))
/* *********************************************************************
* Forward declarations
********************************************************************* */
extern void _wbflush(void);
static void atapidrv_probe(cfe_driver_t *drv,
unsigned long probe_a, unsigned long probe_b,
void *probe_ptr);
const static cfe_devdisp_t atapidrv_dispatch = {
idecommon_open,
idecommon_read,
idecommon_inpstat,
idecommon_write,
idecommon_ioctl,
idecommon_close,
NULL,
NULL
};
const cfe_driver_t atapidrv = {
"ATAPI device",
"atapi",
CFE_DEV_DISK,
&atapidrv_dispatch,
atapidrv_probe
};
/* *********************************************************************
* Port I/O routines
*
* These routines are called back from the common code to do
* I/O cycles to the IDE disk. We provide routines for
* reading and writing bytes, words, and strings of words.
********************************************************************* */
static uint8_t atapidrv_inb(idecommon_dispatch_t *disp,uint32_t reg)
{
return *((volatile uint8_t *) PHYS_TO_K1(reg+disp->baseaddr));
}
static uint16_t atapidrv_inw(idecommon_dispatch_t *disp,uint32_t reg)
{
return *((volatile uint16_t *) PHYS_TO_K1((reg+disp->baseaddr)));
}
static void atapidrv_ins(idecommon_dispatch_t *disp,uint32_t reg,uint8_t *buf,int len)
{
uint16_t data;
while (len > 0) {
data = *((volatile uint16_t *) PHYS_TO_K1(reg+disp->baseaddr));
#ifdef _BYTESWAP_
*buf++ = (data >> 8) & 0xFF;
*buf++ = (data & 0xFF);
#else
*buf++ = (data & 0xFF);
*buf++ = (data >> 8) & 0xFF;
#endif
len--;
len--;
}
}
static void atapidrv_outb(idecommon_dispatch_t *disp,uint32_t reg,uint8_t val)
{
*((volatile uint8_t *) PHYS_TO_K1(reg+disp->baseaddr)) = val;
_wbflush();
}
static void atapidrv_outw(idecommon_dispatch_t *disp,uint32_t reg,uint16_t val)
{
*((volatile uint16_t *) PHYS_TO_K1(reg+disp->baseaddr)) = val;
_wbflush();
}
static void atapidrv_outs(idecommon_dispatch_t *disp,uint32_t reg,uint8_t *buf,int len)
{
uint16_t data;
while (len > 0) {
#ifdef _BYTESWAP_
data = (uint16_t) buf[1] + ((uint16_t) buf[0] << 8);
#else
data = (uint16_t) buf[0] + ((uint16_t) buf[1] << 8);
#endif
*((volatile uint16_t *) PHYS_TO_K1(reg+disp->baseaddr)) = data;
_wbflush();
buf++;
buf++;
len--;
len--;
}
}
static void atapidrv_probe(cfe_driver_t *drv,
unsigned long probe_a, unsigned long probe_b,
void *probe_ptr)
{
idecommon_t *softc;
idecommon_dispatch_t *disp;
char descr[80];
char unitstr[50];
int res;
/*
* probe_a is the IDE base address
* probe_b is the unit number and other flags
* probe_ptr is unused.
*/
softc = (idecommon_t *) KMALLOC(sizeof(idecommon_t),0);
disp = (idecommon_dispatch_t *) KMALLOC(sizeof(idecommon_dispatch_t),0);
if (softc && disp) {
softc->idecommon_addr = probe_a;
softc->idecommon_unit = probe_b;
disp->ref = softc;
disp->baseaddr = softc->idecommon_addr;
softc->idecommon_dispatch = disp;
disp->outb = atapidrv_outb;
disp->outw = atapidrv_outw;
disp->outs = atapidrv_outs;
disp->inb = atapidrv_inb;
disp->inw = atapidrv_inw;
disp->ins = atapidrv_ins;
res = idecommon_devprobe(softc);
if (res < 0) {
KFREE(softc);
KFREE(disp);
return;
}
xsprintf(descr,"%s unit %d at %08X",drv->drv_description,probe_b,probe_a);
xsprintf(unitstr,"%d",probe_b);
cfe_attach(drv,softc,unitstr,descr);
}
}
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