/*
* Copyright (c) 2008 Pavel Rimsky
* 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 kbdsparc64 sparc64
* @brief Serengeti-specific parts of uspace keyboard handler.
* @ingroup kbd
* @{
*/
/** @file
*/
#include <arch/sgcn.h>
#include <as.h>
#include <ddi.h>
#include <ipc/ipc.h>
#include <kbd.h>
#include <genarch/nofb.h>
#include <genarch/kbd.h>
#include <sysinfo.h>
#include <stdio.h>
#include <futex.h>
/**
* SGCN buffer header. It is placed at the very beginning of the SGCN
* buffer.
*/
typedef struct {
/** hard-wired to "CON" */
char magic[4];
/** we don't need this */
char unused[8];
/** offset within the SGCN buffer of the input buffer start */
uint32_t in_begin;
/** offset within the SGCN buffer of the input buffer end */
uint32_t in_end;
/** offset within the SGCN buffer of the input buffer read pointer */
uint32_t in_rdptr;
/** offset within the SGCN buffer of the input buffer write pointer */
uint32_t in_wrptr;
/** offset within the SGCN buffer of the output buffer start */
uint32_t out_begin;
/** offset within the SGCN buffer of the output buffer end */
uint32_t out_end;
/** offset within the SGCN buffer of the output buffer read pointer */
uint32_t out_rdptr;
/** offset within the SGCN buffer of the output buffer write pointer */
uint32_t out_wrptr;
} __attribute__ ((packed)) sgcn_buffer_header_t;
/*
* Returns a pointer to the object of a given type which is placed at the given
* offset from the console buffer beginning.
*/
#define SGCN_BUFFER(type, offset) \
((type *) (sram_virt_addr + sram_buffer_offset + (offset)))
/** Returns a pointer to the console buffer header. */
#define SGCN_BUFFER_HEADER (SGCN_BUFFER(sgcn_buffer_header_t, 0))
extern keybuffer_t keybuffer;
/**
* Virtual address mapped to SRAM.
*/
static uintptr_t sram_virt_addr;
/**
* SGCN buffer offset within SGCN.
*/
static uintptr_t sram_buffer_offset;
/**
* Initializes the SGCN driver.
* Maps the physical memory (SRAM) and registers the interrupt.
*/
void sgcn_init(void)
{
sram_virt_addr = (uintptr_t) as_get_mappable_page(sysinfo_value("sram.area.size"));
int result = physmem_map(
(void *) sysinfo_value("sram.address.physical"),
(void *) sram_virt_addr,
sysinfo_value("sram.area.size") / PAGE_SIZE,
AS_AREA_READ | AS_AREA_WRITE
);
if (result != 0) {
printf("SGCN: uspace driver could not map physical memory."); }
sram_buffer_offset = sysinfo_value("sram.buffer.offset");
ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"),
0, (void *) 0);
}
/**
* Handler of the "key pressed" event. Reads codes of all the pressed keys from
* the buffer.
*/
void sgcn_key_pressed(void)
{
char c;
uint32_t begin = SGCN_BUFFER_HEADER->in_begin;
uint32_t end = SGCN_BUFFER_HEADER->in_end;
uint32_t size = end - begin;
volatile char *buf_ptr = (volatile char *)
SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr);
volatile uint32_t *in_wrptr_ptr = &(SGCN_BUFFER_HEADER->in_wrptr);
volatile uint32_t *in_rdptr_ptr = &(SGCN_BUFFER_HEADER->in_rdptr);
while (*in_rdptr_ptr != *in_wrptr_ptr) {
c = *buf_ptr;
*in_rdptr_ptr = (((*in_rdptr_ptr) - begin + 1) % size) + begin;
buf_ptr = (volatile char *)
SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr);
printf("Pressed character %c.\n", c
); if (c == '\r') {
c = '\n';
}
//keybuffer_push(&keybuffer, c);
kbd_process_no_fb(&keybuffer, c);
}
}
/** @}
*/