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//==========================================================================
//
// devs/pcmcia/ipaq/ipaq_pcmcia.c
//
// PCMCIA support (Card Services)
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas
// Contributors: gthomas
// richard.panton@3glab.com
// Date: 2001-02-24
// Purpose: PCMCIA support
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <pkgconf/io_pcmcia.h>
#include <cyg/hal/hal_io.h> // IO macros
#include <cyg/hal/hal_arch.h> // Register state info
#include <cyg/hal/hal_intr.h> // HAL interrupt macros
#include <cyg/hal/drv_api.h>
#ifdef CYGPKG_KERNEL
#include <pkgconf/kernel.h> // Configuration header
#include <cyg/kernel/kapi.h>
#endif
#include <cyg/hal/hal_if.h>
#include <cyg/io/pcmcia.h>
#include <cyg/infra/diag.h>
#include <cyg/hal/hal_sa11x0.h> // Board definitions
#include <cyg/hal/ipaq.h>
#ifdef CYGPKG_KERNEL
static cyg_interrupt cf_detect_interrupt;
static cyg_handle_t cf_detect_interrupt_handle;
static cyg_interrupt cf_irq_interrupt;
static cyg_handle_t cf_irq_interrupt_handle;
// This ISR is called when a CompactFlash board is inserted
static int
cf_detect_isr(cyg_vector_t vector, cyg_addrword_t data, HAL_SavedRegisters *regs)
{
cyg_drv_interrupt_mask(SA1110_CF_DETECT);
return (CYG_ISR_HANDLED|CYG_ISR_CALL_DSR); // Run the DSR
}
// This DSR handles the board insertion
static void
cf_detect_dsr(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data)
{
unsigned long new_state = *SA11X0_GPIO_PIN_LEVEL;
struct cf_slot *slot = (struct cf_slot *)data;
if ((new_state & SA1110_GPIO_CF_DETECT) == SA1110_GPIO_CF_PRESENT) {
slot->state = CF_SLOT_STATE_Inserted;
} else {
slot->state = CF_SLOT_STATE_Removed; // Implies powered up, etc.
}
cyg_drv_interrupt_acknowledge(SA1110_CF_DETECT);
cyg_drv_interrupt_unmask(SA1110_CF_DETECT);
}
// This ISR is called when the card interrupt occurs
static int
cf_irq_isr(cyg_vector_t vector, cyg_addrword_t data, HAL_SavedRegisters *regs)
{
cyg_drv_interrupt_mask(SA1110_CF_IRQ);
return (CYG_ISR_HANDLED|CYG_ISR_CALL_DSR); // Run the DSR
}
// This DSR handles the card interrupt
static void
cf_irq_dsr(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data)
{
struct cf_slot *slot = (struct cf_slot *)data;
#if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT)
cyg_bool was_ctrlc_int;
#endif
// Clear interrupt [edge indication]
cyg_drv_interrupt_acknowledge(SA1110_CF_IRQ);
#if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT)
was_ctrlc_int = HAL_CTRLC_CHECK(vector, data);
if (!was_ctrlc_int) // Fall through and run normal code
#endif
// Process interrupt
(slot->irq_handler.handler)(vector, count, slot->irq_handler.param);
// Allow interrupts to happen again
cyg_drv_interrupt_unmask(SA1110_CF_IRQ);
}
#endif
static void
do_delay(int ticks)
{
#ifdef CYGPKG_KERNEL
cyg_thread_delay(ticks);
#else
CYGACC_CALL_IF_DELAY_US(10000*ticks);
#endif
}
//
// Fill in the details of a PCMCIA slot and initialize the device
//
void
cf_hwr_init(struct cf_slot *slot)
{
static int int_init = 0;
unsigned long new_state = *SA11X0_GPIO_PIN_LEVEL;
if (!int_init) {
int_init = 1;
#ifdef CYGPKG_KERNEL
// Set up interrupts
cyg_drv_interrupt_create(SA1110_CF_DETECT,
99, // Priority - what goes here?
(cyg_addrword_t) slot, // Data item passed to interrupt handler
(cyg_ISR_t *)cf_detect_isr,
(cyg_DSR_t *)cf_detect_dsr,
&cf_detect_interrupt_handle,
&cf_detect_interrupt);
cyg_drv_interrupt_attach(cf_detect_interrupt_handle);
cyg_drv_interrupt_configure(SA1110_CF_DETECT, true, true); // Detect either edge
cyg_drv_interrupt_acknowledge(SA1110_CF_DETECT);
cyg_drv_interrupt_unmask(SA1110_CF_DETECT);
cyg_drv_interrupt_create(SA1110_CF_IRQ,
99, // Priority - what goes here?
(cyg_addrword_t) slot, // Data item passed to interrupt handler
(cyg_ISR_t *)cf_irq_isr,
(cyg_DSR_t *)cf_irq_dsr,
&cf_irq_interrupt_handle,
&cf_irq_interrupt);
cyg_drv_interrupt_attach(cf_irq_interrupt_handle);
cyg_drv_interrupt_unmask(SA1110_CF_IRQ);
cyg_drv_interrupt_configure(SA1110_CF_IRQ, false, false); // Falling edge
cyg_drv_interrupt_acknowledge(SA1110_CF_IRQ);
#endif
}
slot->attr = (unsigned char *)0x28000000;
slot->attr_length = 0x200;
slot->io = (unsigned char *)0x20000000;
slot->io_length = 0x04000000;
slot->mem = (unsigned char *)0x2C000000;
slot->mem_length = 0x04000000;
slot->int_num = SA1110_CF_IRQ;
#ifdef CYG_HAL_STARTUP_ROM
// Disable CF bus & power (idle/off)
ipaq_EGPIO( SA1110_EIO_OPT_PWR | SA1110_EIO_OPT | SA1110_EIO_CF_RESET,
SA1110_EIO_OPT_PWR_ON | SA1110_EIO_OPT_ON | SA1110_EIO_CF_RESET_ENABLE );
#endif
if ((new_state & SA1110_GPIO_CF_DETECT) == SA1110_GPIO_CF_PRESENT) {
if ((_ipaq_EGPIO & SA1110_EIO_OPT_PWR) == SA1110_EIO_OPT_PWR_ON) {
// Assume that the ROM environment has turned the bus on
slot->state = CF_SLOT_STATE_Ready;
} else {
slot->state = CF_SLOT_STATE_Inserted;
}
} else {
slot->state = CF_SLOT_STATE_Empty;
}
}
void
cf_hwr_poll(struct cf_slot *slot)
{
unsigned long new_state = *SA11X0_GPIO_PIN_LEVEL;
if ((new_state & SA1110_GPIO_CF_DETECT) == SA1110_GPIO_CF_PRESENT) {
slot->state = CF_SLOT_STATE_Inserted;
} else {
slot->state = CF_SLOT_STATE_Empty;
}
}
//
// Transition the card/slot to a new state
// note: currently only supports transitions to Ready, Empty
//
void
cf_hwr_change_state(struct cf_slot *slot, int new_state)
{
int i, ptr, len;
unsigned char buf[256];
if (new_state == CF_SLOT_STATE_Ready) {
if (slot->state == CF_SLOT_STATE_Inserted) {
ipaq_EGPIO( SA1110_EIO_OPT_PWR | SA1110_EIO_OPT | SA1110_EIO_CF_RESET,
SA1110_EIO_OPT_PWR_ON | SA1110_EIO_OPT_ON | SA1110_EIO_CF_RESET_DISABLE);
do_delay(30); // At least 300 ms
slot->state = CF_SLOT_STATE_Powered;
ipaq_EGPIO( SA1110_EIO_CF_RESET, SA1110_EIO_CF_RESET_ENABLE);
*(volatile unsigned short *)IPAQ_CF_CTRL = IPAQ_CF_CTRL_V5_DISABLE |
IPAQ_CF_CTRL_V3_ENABLE |
IPAQ_CF_CTRL_RESET_ENABLE |
IPAQ_CF_CTRL_APOE_ENABLE |
IPAQ_CF_CTRL_SOE_ENABLE;
do_delay(1); // At least 10 us
slot->state = CF_SLOT_STATE_Reset;
ipaq_EGPIO( SA1110_EIO_CF_RESET, SA1110_EIO_CF_RESET_DISABLE);
do_delay(5); // At least 20 ms
// This is necessary for the two slot sleeve and doesn't seem to
// hurt on the single slot versions. Note: only 3.3V is ever used!
*(volatile unsigned short *)IPAQ_CF_CTRL = IPAQ_CF_CTRL_V5_DISABLE |
IPAQ_CF_CTRL_V3_ENABLE |
IPAQ_CF_CTRL_RESET_DISABLE |
IPAQ_CF_CTRL_APOE_ENABLE |
IPAQ_CF_CTRL_SOE_ENABLE;
do_delay(5); // At least 20 ms
// Wait until the card is ready to talk
for (i = 0; i < 10; i++) {
ptr = 0;
if (cf_get_CIS(slot, CF_CISTPL_VERS_1, buf, &len, &ptr)) {
slot->state = CF_SLOT_STATE_Ready;
break;
}
do_delay(10);
}
}
}
}
//
// Acknowledge interrupt (used in non-kernel environments)
//
void
cf_hwr_clear_interrupt(struct cf_slot *slot)
{
// Clear interrupt [edge indication]
cyg_drv_interrupt_acknowledge(SA1110_CF_IRQ);
}
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