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[/] [or1k/] [tags/] [stable_0_2_0_rc3/] [or1ksim/] [peripheral/] [gpio.c] - Blame information for rev 499

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/* gpio.h -- GPIO code simulation
   Copyright (C) 2001 Erez Volk, erez@mailandnews.comopencores.org
 
   This file is part of OpenRISC 1000 Architectural Simulator.
 
   This program 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 of the License, or
   (at your option) any later version.
 
   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
 
#include "gpio.h"
#include "gpio_i.h"
#include "sim-config.h"
#include "pic.h"
#include "vapi.h"
 
static struct gpio_device gpios[MAX_GPIOS];
 
static void gpio_vapi_read( unsigned long id, unsigned long data );
static unsigned long gpio_read32( unsigned long addr );
static void gpio_write32( unsigned long addr, unsigned long value );
 
static void gpio_external_clock( unsigned long value );
static void gpio_device_clock( struct gpio_device *gpio );
static int gpio_find_device( unsigned long addr, struct gpio_device **gpio, unsigned long *reladdr );
static struct gpio_device *gpio_find_vapi_device( unsigned long id, unsigned *which_vapi );
 
/* Initialize all parameters and state */
void gpio_reset( void )
{
  static int first_time = 1;
  unsigned i, j;
 
  if ( !config.ngpios )
    config.gpios_enabled = 0;
  if ( !config.gpios_enabled )
    return;
 
  if ( first_time ) {
    memset( gpios, 0, sizeof(gpios) );
    first_time = 0;
  }
 
 
  for ( i = 0; i < config.ngpios; ++ i ) {
    struct gpio_device *gpio = &(gpios[i]);
 
    gpio->gpio_number = i;
    gpio->baseaddr = config.gpios[i].baseaddr;
 
    if ( gpio->baseaddr != 0 ) {
      /* Get IRQ */
      gpio->irq = config.gpios[i].irq;
 
      /* Register memory range */
      register_memoryarea( gpio->baseaddr, GPIO_ADDR_SPACE, 4, gpio_read32, gpio_write32 );
 
      /* Possibly connect to VAPI */
      if ( config.gpios[i].base_vapi_id ) {
        gpio->base_vapi_id = config.gpios[i].base_vapi_id;
        vapi_install_multi_handler( gpio->base_vapi_id, GPIO_NUM_VAPI_IDS, gpio_vapi_read );
      }
    }
  }
}
 
 
/* Dump status */
void gpio_status( void )
{
  unsigned i;
 
  for ( i = 0; i < config.ngpios; ++ i ) {
    struct gpio_device *gpio = &(gpios[i]);
 
    if ( gpio->baseaddr == 0 )
      continue;
 
    printf( "\nGPIO %u at 0x%08X:\n", i, gpio->baseaddr );
    printf( "RGPIO_IN     : 0x%08lX\n", gpio->curr.in );
    printf( "RGPIO_OUT    : 0x%08lX\n", gpio->curr.out );
    printf( "RGPIO_OE     : 0x%08lX\n", gpio->curr.oe );
    printf( "RGPIO_INTE   : 0x%08lX\n", gpio->curr.inte );
    printf( "RGPIO_PTRIG  : 0x%08lX\n", gpio->curr.ptrig );
    printf( "RGPIO_AUX    : 0x%08lX\n", gpio->curr.aux );
    printf( "RGPIO_CTRL   : 0x%08lX\n", gpio->curr.ctrl );
  }
}
 
 
/* Convert a memory address to a device struct and relative address.
 * Return nonzero on success */
int gpio_find_device( unsigned long addr, struct gpio_device **gpio, unsigned long *reladdr )
{
  unsigned i;
  *gpio = NULL;
 
  for ( i = 0; i < config.ngpios && *gpio == NULL; ++ i ) {
    if ( (addr >= gpios[i].baseaddr) && (addr < gpios[i].baseaddr + GPIO_ADDR_SPACE) )
      *gpio = &(gpios[i]);
  }
 
  /* verify we found a device */
  if ( *gpio == NULL )
    return 0;
 
  /* Verify legal address */
  if ( (addr - (*gpio)->baseaddr) % 4 != 0 )
    return 0;
 
  *reladdr = addr - (*gpio)->baseaddr;
  return 1;
}
 
 
/* Find device by vapi id */
struct gpio_device *gpio_find_vapi_device( unsigned long id, unsigned *which )
{
  unsigned i, j;
 
  for ( i = 0; i < config.ngpios; ++ i )
    if ( (id >= gpios[i].base_vapi_id) && (id < gpios[i].base_vapi_id + GPIO_NUM_VAPI_IDS) ) {
      *which = id - gpios[i].base_vapi_id;
      return &(gpios[i]);
    }
 
  return NULL;
}
 
 
/* Wishbone read */
unsigned long gpio_read32( unsigned long addr )
{
  struct gpio_device *gpio;
  if ( !gpio_find_device( addr, &gpio, &addr ) )        {
    debug( 2, "gpio_read32( 0x%08lX ): Not in registered range(s)\n", addr );
    return 0;
  }
 
  switch( addr ) {
  case RGPIO_IN:
    gpio->next.ctrl &= ~RGPIO_CTRL_INT;
    return gpio->curr.in | gpio->curr.out;
  case RGPIO_OUT: return gpio->curr.out;
  case RGPIO_OE: return gpio->curr.oe;
  case RGPIO_INTE: return gpio->curr.inte;
  case RGPIO_PTRIG: return gpio->curr.ptrig;
  case RGPIO_AUX: return gpio->curr.aux;
  case RGPIO_CTRL: return gpio->curr.ctrl;
  }
}
 
 
/* Wishbone write */
void gpio_write32( unsigned long addr, unsigned long value )
{
  struct gpio_device *gpio;
  if ( !gpio_find_device( addr, &gpio, &addr ) )        {
    debug( 2, "gpio_write32( 0x%08lX ): Not in registered range(s)\n", addr );
    return;
  }
 
  switch( addr ) {
  case RGPIO_IN: debug( 5, "GPIO: Cannot write to RGPIO_IN\n" ); break;
  case RGPIO_OUT: gpio->next.out = value; break;
  case RGPIO_OE: gpio->next.oe = value; break;
  case RGPIO_INTE: gpio->next.inte = value; break;
  case RGPIO_PTRIG: gpio->next.ptrig = value; break;
  case RGPIO_AUX: gpio->next.aux = value; break;
  case RGPIO_CTRL: gpio->next.ctrl = value; break;
  }
}
 
 
/* Input from "outside world" */
void gpio_vapi_read( unsigned long id, unsigned long data )
{
  unsigned which;
  struct gpio_device *gpio = gpio_find_vapi_device( id, &which );
 
  debug( 5, "GPIO: id %08x, data %08x\n", id, data );
 
  if ( !gpio ) {
    debug( 1, "GPIO: VAPI ID %08x is not ours!\n", id );
    return;
  }
 
  switch( which ) {
  case GPIO_VAPI_DATA:
    debug( 4, "GPIO: Next input from VAPI = 0x%08x (RGPIO_OE = 0x%08x)\n", data, gpio->next.oe );
    gpio->next.in = data;
    break;
  case GPIO_VAPI_AUX:
    gpio->auxiliary_inputs = data;
    break;
  case GPIO_VAPI_RGPIO_OE:
    gpio->next.oe = data;
    break;
  case GPIO_VAPI_RGPIO_INTE:
    gpio->next.inte = data;
    break;
  case GPIO_VAPI_RGPIO_PTRIG:
    gpio->next.ptrig = data;
    break;
  case GPIO_VAPI_RGPIO_AUX:
    gpio->next.aux = data;
    break;
  case GPIO_VAPI_RGPIO_CTRL:
    gpio->next.ctrl = data;
    break;
  case GPIO_VAPI_CLOCK:
    gpio_external_clock( data );
    break;
  }
}
 
/* System Clock. */
void gpio_clock( void )
{
  unsigned i;
 
  for ( i = 0; i < config.ngpios; ++ i )
    if ( !(gpios[i].curr.ctrl & RGPIO_CTRL_ECLK) )
      gpio_device_clock( &(gpios[i]) );
}
 
/* External Clock. */
void gpio_external_clock( unsigned long value )
{
  unsigned i;
 
  /* "Normalize" clock value */
  value = (value != 0);
 
  for ( i = 0; i < config.ngpios; ++ i ) {
    struct gpio_device *gpio = &(gpios[i]);
 
    int use_external_clock = ((gpio->curr.ctrl & RGPIO_CTRL_ECLK) == RGPIO_CTRL_ECLK);
    int negative_edge = ((gpio->curr.ctrl & RGPIO_CTRL_NEC) == RGPIO_CTRL_NEC);
 
    gpio->next.external_clock = value;
 
    if ( use_external_clock && (gpio->next.external_clock != gpio->curr.external_clock) && (value != negative_edge) )
      gpio_device_clock( gpio );
  }
}
 
 
/* Clock as handld by one device. */
void gpio_device_clock( struct gpio_device *gpio )
{
  /* Calculate new inputs and outputs */
  gpio->next.in &= ~gpio->next.oe; /* Only input bits */
  /* Replace requested output bits with aux input */
  gpio->next.out = (gpio->next.out & ~gpio->next.aux) | (gpio->auxiliary_inputs & gpio->next.aux);
  gpio->next.out &= gpio->next.oe; /* Only output-enabled bits */
 
  /* If any outputs changed, notify the world (i.e. vapi) */
  if ( gpio->next.out != gpio->curr.out ) {
    debug( 4, "GPIO: New output 0x%08x, RGPIO_OE = 0x%08x\n", gpio->next.out, gpio->next.oe );
    if ( gpio->base_vapi_id )
      vapi_send( gpio->base_vapi_id + GPIO_VAPI_DATA, gpio->next.out );
  }
 
  /* If any inputs changed and interrupt enabled, generate interrupt */
  if ( gpio->next.in != gpio->curr.in ) {
    debug( 4, "GPIO: New input 0x%08x\n", gpio->next.in );
 
    if ( gpio->next.ctrl & RGPIO_CTRL_INTE ) {
      unsigned changed_bits = gpio->next.in ^ gpio->curr.in; /* inputs that have changed */
      unsigned set_bits = changed_bits & gpio->next.in; /* inputs that have been set */
      unsigned cleared_bits = changed_bits & gpio->curr.in; /* inputs that have been cleared */
      unsigned relevant_bits = (gpio->next.ptrig & set_bits) | (~gpio->next.ptrig & cleared_bits);
 
      if ( relevant_bits & gpio->next.inte ) {
        debug( 3, "GPIO: Reporting interrupt %d\n", gpio->irq );
        report_interrupt( gpio->irq );
        gpio->next.ctrl |= RGPIO_CTRL_INT;
      }
    }
  }
 
  /* Switch to values for next clock */
  memcpy( &(gpio->curr), &(gpio->next), sizeof(gpio->curr) );
}

Line No.	Rev	Author	Line
1	444	erez	`/* gpio.h -- GPIO code simulation`
2			`Copyright (C) 2001 Erez Volk, erez@mailandnews.comopencores.org`
3
4			`This file is part of OpenRISC 1000 Architectural Simulator.`
5
6			`This program is free software; you can redistribute it and/or modify`
7			`it under the terms of the GNU General Public License as published by`
8			`the Free Software Foundation; either version 2 of the License, or`
9			`(at your option) any later version.`
10
11			`This program is distributed in the hope that it will be useful,`
12			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
13			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
14			`GNU General Public License for more details.`
15
16			`You should have received a copy of the GNU General Public License`
17			`along with this program; if not, write to the Free Software`
18			`Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.`
19			`*/`
20
21			`#include "gpio.h"`
22			`#include "gpio_i.h"`
23			`#include "sim-config.h"`
24			`#include "pic.h"`
25			`#include "vapi.h"`
26
27			`static struct gpio_device gpios[MAX_GPIOS];`
28
29			`static void gpio_vapi_read( unsigned long id, unsigned long data );`
30			`static unsigned long gpio_read32( unsigned long addr );`
31			`static void gpio_write32( unsigned long addr, unsigned long value );`
32
33			`static void gpio_external_clock( unsigned long value );`
34			`static void gpio_device_clock( struct gpio_device *gpio );`
35			`static int gpio_find_device( unsigned long addr, struct gpio_device *gpio, unsigned long reladdr );`
36			`static struct gpio_device gpio_find_vapi_device( unsigned long id, unsigned which_vapi );`
37
38			`/* Initialize all parameters and state */`
39			`void gpio_reset( void )`
40			`{`
41			`static int first_time = 1;`
42			`unsigned i, j;`
43
44			`if ( !config.ngpios )`
45			`config.gpios_enabled = 0;`
46			`if ( !config.gpios_enabled )`
47			`return;`
48
49			`if ( first_time ) {`
50			`memset( gpios, 0, sizeof(gpios) );`
51			`first_time = 0;`
52			`}`
53
54
55	477	erez	`for ( i = 0; i < config.ngpios; ++ i ) {`
56	444	erez	`struct gpio_device *gpio = &(gpios[i]);`
57
58			`gpio->gpio_number = i;`
59			`gpio->baseaddr = config.gpios[i].baseaddr;`
60
61			`if ( gpio->baseaddr != 0 ) {`
62			`/* Get IRQ */`
63			`gpio->irq = config.gpios[i].irq;`
64
65			`/* Register memory range */`
66			`register_memoryarea( gpio->baseaddr, GPIO_ADDR_SPACE, 4, gpio_read32, gpio_write32 );`
67
68			`/* Possibly connect to VAPI */`
69	477	erez	`if ( config.gpios[i].base_vapi_id ) {`
70			`gpio->base_vapi_id = config.gpios[i].base_vapi_id;`
71			`vapi_install_multi_handler( gpio->base_vapi_id, GPIO_NUM_VAPI_IDS, gpio_vapi_read );`
72			`}`
73	444	erez	`}`
74			`}`
75			`}`
76
77
78			`/* Dump status */`
79			`void gpio_status( void )`
80			`{`
81			`unsigned i;`
82
83	477	erez	`for ( i = 0; i < config.ngpios; ++ i ) {`
84	444	erez	`struct gpio_device *gpio = &(gpios[i]);`
85
86			`if ( gpio->baseaddr == 0 )`
87			`continue;`
88
89			`printf( "\nGPIO %u at 0x%08X:\n", i, gpio->baseaddr );`
90			`printf( "RGPIO_IN : 0x%08lX\n", gpio->curr.in );`
91			`printf( "RGPIO_OUT : 0x%08lX\n", gpio->curr.out );`
92			`printf( "RGPIO_OE : 0x%08lX\n", gpio->curr.oe );`
93			`printf( "RGPIO_INTE : 0x%08lX\n", gpio->curr.inte );`
94			`printf( "RGPIO_PTRIG : 0x%08lX\n", gpio->curr.ptrig );`
95			`printf( "RGPIO_AUX : 0x%08lX\n", gpio->curr.aux );`
96			`printf( "RGPIO_CTRL : 0x%08lX\n", gpio->curr.ctrl );`
97			`}`
98			`}`
99
100
101			`/* Convert a memory address to a device struct and relative address.`
102			`* Return nonzero on success */`
103			`int gpio_find_device( unsigned long addr, struct gpio_device *gpio, unsigned long reladdr )`
104			`{`
105			`unsigned i;`
106			`*gpio = NULL;`
107
108	477	erez	`for ( i = 0; i < config.ngpios && *gpio == NULL; ++ i ) {`
109	444	erez	`if ( (addr >= gpios[i].baseaddr) && (addr < gpios[i].baseaddr + GPIO_ADDR_SPACE) )`
110			`*gpio = &(gpios[i]);`
111			`}`
112
113			`/* verify we found a device */`
114			`if ( *gpio == NULL )`
115			`return 0;`
116
117			`/* Verify legal address */`
118			`if ( (addr - (*gpio)->baseaddr) % 4 != 0 )`
119			`return 0;`
120
121			`reladdr = addr - (gpio)->baseaddr;`
122			`return 1;`
123			`}`
124
125
126			`/* Find device by vapi id */`
127			`struct gpio_device gpio_find_vapi_device( unsigned long id, unsigned which )`
128			`{`
129			`unsigned i, j;`
130
131	477	erez	`for ( i = 0; i < config.ngpios; ++ i )`
132			`if ( (id >= gpios[i].base_vapi_id) && (id < gpios[i].base_vapi_id + GPIO_NUM_VAPI_IDS) ) {`
133			`*which = id - gpios[i].base_vapi_id;`
134			`return &(gpios[i]);`
135			`}`
136	444	erez
137			`return NULL;`
138			`}`
139
140
141			`/* Wishbone read */`
142			`unsigned long gpio_read32( unsigned long addr )`
143			`{`
144			`struct gpio_device *gpio;`
145			`if ( !gpio_find_device( addr, &gpio, &addr ) ) {`
146	483	erez	`debug( 2, "gpio_read32( 0x%08lX ): Not in registered range(s)\n", addr );`
147	444	erez	`return 0;`
148			`}`
149
150			`switch( addr ) {`
151	477	erez	`case RGPIO_IN:`
152			`gpio->next.ctrl &= ~RGPIO_CTRL_INT;`
153			`return gpio->curr.in \| gpio->curr.out;`
154	444	erez	`case RGPIO_OUT: return gpio->curr.out;`
155			`case RGPIO_OE: return gpio->curr.oe;`
156			`case RGPIO_INTE: return gpio->curr.inte;`
157			`case RGPIO_PTRIG: return gpio->curr.ptrig;`
158			`case RGPIO_AUX: return gpio->curr.aux;`
159			`case RGPIO_CTRL: return gpio->curr.ctrl;`
160			`}`
161			`}`
162
163
164			`/* Wishbone write */`
165			`void gpio_write32( unsigned long addr, unsigned long value )`
166			`{`
167			`struct gpio_device *gpio;`
168			`if ( !gpio_find_device( addr, &gpio, &addr ) ) {`
169	483	erez	`debug( 2, "gpio_write32( 0x%08lX ): Not in registered range(s)\n", addr );`
170	444	erez	`return;`
171			`}`
172
173			`switch( addr ) {`
174	483	erez	`case RGPIO_IN: debug( 5, "GPIO: Cannot write to RGPIO_IN\n" ); break;`
175	444	erez	`case RGPIO_OUT: gpio->next.out = value; break;`
176			`case RGPIO_OE: gpio->next.oe = value; break;`
177			`case RGPIO_INTE: gpio->next.inte = value; break;`
178			`case RGPIO_PTRIG: gpio->next.ptrig = value; break;`
179			`case RGPIO_AUX: gpio->next.aux = value; break;`
180			`case RGPIO_CTRL: gpio->next.ctrl = value; break;`
181			`}`
182			`}`
183
184
185			`/* Input from "outside world" */`
186			`void gpio_vapi_read( unsigned long id, unsigned long data )`
187			`{`
188			`unsigned which;`
189			`struct gpio_device *gpio = gpio_find_vapi_device( id, &which );`
190
191	477	erez	`debug( 5, "GPIO: id %08x, data %08x\n", id, data );`
192	444	erez
193			`if ( !gpio ) {`
194			`debug( 1, "GPIO: VAPI ID %08x is not ours!\n", id );`
195			`return;`
196			`}`
197
198			`switch( which ) {`
199	477	erez	`case GPIO_VAPI_DATA:`
200	483	erez	`debug( 4, "GPIO: Next input from VAPI = 0x%08x (RGPIO_OE = 0x%08x)\n", data, gpio->next.oe );`
201	477	erez	`gpio->next.in = data;`
202			`break;`
203			`case GPIO_VAPI_AUX:`
204			`gpio->auxiliary_inputs = data;`
205			`break;`
206			`case GPIO_VAPI_RGPIO_OE:`
207			`gpio->next.oe = data;`
208			`break;`
209			`case GPIO_VAPI_RGPIO_INTE:`
210			`gpio->next.inte = data;`
211			`break;`
212			`case GPIO_VAPI_RGPIO_PTRIG:`
213			`gpio->next.ptrig = data;`
214			`break;`
215			`case GPIO_VAPI_RGPIO_AUX:`
216			`gpio->next.aux = data;`
217			`break;`
218			`case GPIO_VAPI_RGPIO_CTRL:`
219			`gpio->next.ctrl = data;`
220			`break;`
221			`case GPIO_VAPI_CLOCK:`
222			`gpio_external_clock( data );`
223			`break;`
224	444	erez	`}`
225			`}`
226
227			`/* System Clock. */`
228			`void gpio_clock( void )`
229			`{`
230			`unsigned i;`
231
232	477	erez	`for ( i = 0; i < config.ngpios; ++ i )`
233	444	erez	`if ( !(gpios[i].curr.ctrl & RGPIO_CTRL_ECLK) )`
234			`gpio_device_clock( &(gpios[i]) );`
235			`}`
236
237			`/* External Clock. */`
238			`void gpio_external_clock( unsigned long value )`
239			`{`
240			`unsigned i;`
241
242	477	erez	`/* "Normalize" clock value */`
243	444	erez	`value = (value != 0);`
244
245	477	erez	`for ( i = 0; i < config.ngpios; ++ i ) {`
246	444	erez	`struct gpio_device *gpio = &(gpios[i]);`
247
248	477	erez	`int use_external_clock = ((gpio->curr.ctrl & RGPIO_CTRL_ECLK) == RGPIO_CTRL_ECLK);`
249			`int negative_edge = ((gpio->curr.ctrl & RGPIO_CTRL_NEC) == RGPIO_CTRL_NEC);`
250	444	erez
251			`gpio->next.external_clock = value;`
252
253	477	erez	`if ( use_external_clock && (gpio->next.external_clock != gpio->curr.external_clock) && (value != negative_edge) )`
254	444	erez	`gpio_device_clock( gpio );`
255			`}`
256			`}`
257
258	477	erez
259	444	erez	`/* Clock as handld by one device. */`
260			`void gpio_device_clock( struct gpio_device *gpio )`
261			`{`
262	445	erez	`/* Calculate new inputs and outputs */`
263			`gpio->next.in &= ~gpio->next.oe; /* Only input bits */`
264			`/* Replace requested output bits with aux input */`
265			`gpio->next.out = (gpio->next.out & ~gpio->next.aux) \| (gpio->auxiliary_inputs & gpio->next.aux);`
266			`gpio->next.out &= gpio->next.oe; /* Only output-enabled bits */`
267
268	444	erez	`/* If any outputs changed, notify the world (i.e. vapi) */`
269	477	erez	`if ( gpio->next.out != gpio->curr.out ) {`
270	483	erez	`debug( 4, "GPIO: New output 0x%08x, RGPIO_OE = 0x%08x\n", gpio->next.out, gpio->next.oe );`
271	477	erez	`if ( gpio->base_vapi_id )`
272			`vapi_send( gpio->base_vapi_id + GPIO_VAPI_DATA, gpio->next.out );`
273			`}`
274	444	erez
275	445	erez	`/* If any inputs changed and interrupt enabled, generate interrupt */`
276	477	erez	`if ( gpio->next.in != gpio->curr.in ) {`
277	483	erez	`debug( 4, "GPIO: New input 0x%08x\n", gpio->next.in );`
278	477	erez
279			`if ( gpio->next.ctrl & RGPIO_CTRL_INTE ) {`
280			`unsigned changed_bits = gpio->next.in ^ gpio->curr.in; /* inputs that have changed */`
281			`unsigned set_bits = changed_bits & gpio->next.in; /* inputs that have been set */`
282			`unsigned cleared_bits = changed_bits & gpio->curr.in; /* inputs that have been cleared */`
283			`unsigned relevant_bits = (gpio->next.ptrig & set_bits) \| (~gpio->next.ptrig & cleared_bits);`
284
285			`if ( relevant_bits & gpio->next.inte ) {`
286	499	erez	`debug( 3, "GPIO: Reporting interrupt %d\n", gpio->irq );`
287	477	erez	`report_interrupt( gpio->irq );`
288			`gpio->next.ctrl \|= RGPIO_CTRL_INT;`
289			`}`
290	444	erez	`}`
291			`}`
292
293			`/* Switch to values for next clock */`
294			`memcpy( &(gpio->curr), &(gpio->next), sizeof(gpio->curr) );`
295			`}`

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[/] [or1k/] [tags/] [stable_0_2_0_rc3/] [or1ksim/] [peripheral/] [gpio.c] - Blame information for rev 499