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addded wifimac_t I/O functions

This commit is contained in:
mightymax 2007-01-12 14:12:55 +00:00
parent 3d31ec42c1
commit c08a996ff2
2 changed files with 97 additions and 0 deletions
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83
desmume/src/wifi.c
View File

@ -183,3 +183,86 @@ void WIFI_setBB_DATA(wifimac_t *wifi, u8 val)
if ((wifi->bbIOCnt.bits.mode != 1) || !(wifi->bbIOCnt.bits.enable)) return ; /* not for write or disabled */
wifi->BB.data[wifi->bbIOCnt.bits.address] = val ;
}
/*******************************************************************************
wifimac IO: a lot of the wifi regs are action registers, that are mirrored
without action, so the default IO via MMU.c does not seem to
be very suitable
all registers are 16 bit
*******************************************************************************/
void WIFI_write16(wifimac_t *wifi,u32 address, u16 val)
{
BOOL action = FALSE ;
if ((address & 0xFF800000) != 0x04800000) return ; /* error: the address does not describe a wiifi register */
/* the first 0x1000 bytes are mirrored at +0x1000,+0x2000,+0x3000,+06000,+0x7000 */
/* only the first mirror causes an special action */
/* the gap at +0x4000 is filled with the circular bufferspace */
/* the so created 0x8000 byte block is then mirrored till 0x04FFFFFF */
/* see: http://www.akkit.org/info/dswifi.htm#Wifihwcap */
if (((address & 0x00007000) >= 0x00004000) && ((address & 0x00007000) < 0x00006000))
{
/* access to the circular buffer */
wifi->circularBuffer[(address & 0x1FFF) >> 1] = val ;
return ;
}
if (!(address & 0x00007000)) action = TRUE ;
/* mirrors => register address */
address &= 0x00000FFF ;
switch (address)
{
case REG_WIFI_IE:
wifi->IE.val = val ;
break ;
case REG_WIFI_IF:
wifi->IF.val = val ;
break ;
case REG_WIFI_RFIOCNT:
WIFI_setRF_CNT(wifi,val) ;
break ;
case REG_WIFI_RFIOBSY:
/* CHECKME: read only? */
break ;
case REG_WIFI_RFIODATA1:
WIFI_setRF_DATA(wifi,val,0) ;
break ;
case REG_WIFI_RFIODATA2:
WIFI_setRF_DATA(wifi,val,1) ;
break ;
}
}
u16 WIFI_read16(wifimac_t *wifi,u32 address)
{
BOOL action = FALSE ;
if ((address & 0xFF800000) != 0x04800000) return 0 ; /* error: the address does not describe a wiifi register */
/* the first 0x1000 bytes are mirrored at +0x1000,+0x2000,+0x3000,+06000,+0x7000 */
/* only the first mirror causes an special action */
/* the gap at +0x4000 is filled with the circular bufferspace */
/* the so created 0x8000 byte block is then mirrored till 0x04FFFFFF */
/* see: http://www.akkit.org/info/dswifi.htm#Wifihwcap */
if (((address & 0x00007000) >= 0x00004000) && ((address & 0x00007000) < 0x00006000))
{
/* access to the circular buffer */
return wifi->circularBuffer[(address & 0x1FFF) >> 1] ;
}
if (!(address & 0x00007000)) action = TRUE ;
/* mirrors => register address */
address &= 0x00000FFF ;
switch (address)
{
case REG_WIFI_IE:
return wifi->IE.val ;
case REG_WIFI_IF:
return wifi->IF.val ;
case REG_WIFI_RFIODATA1:
return WIFI_getRF_DATA(wifi,0) ;
case REG_WIFI_RFIODATA2:
return WIFI_getRF_DATA(wifi,1) ;
}
}

14
desmume/src/wifi.h
View File

@ -27,6 +27,13 @@ extern "C" {
#include "types.h"
#define REG_WIFI_IF 0x010
#define REG_WIFI_IE 0x012
#define REG_WIFI_RFIODATA2 0x17C
#define REG_WIFI_RFIODATA1 0x17E
#define REG_WIFI_RFIOBSY 0x180
#define REG_WIFI_RFIOCNT 0x184
/* Referenced as RF_ in dswifi: rffilter_t */
/* based on the documentation for the RF2958 chip of RF Micro Devices */
/* using the register names as in docs ( http://www.rfmd.com/pdfs/2958.pdf )*/
@ -294,6 +301,9 @@ typedef struct
rfIOData_t rfIOData ;
bbIOCnt_t bbIOCnt ;
/* buffers */
u16 circularBuffer[0x1000] ;
} wifimac_t ;
@ -307,6 +317,10 @@ void WIFI_setBB_CNT(wifimac_t *wifi,u16 val) ;
u8 WIFI_getBB_DATA(wifimac_t *wifi) ;
void WIFI_setBB_DATA(wifimac_t *wifi, u8 val) ;
/* wifimac io */
void WIFI_write16(wifimac_t *wifi,u32 address, u16 val) ;
u16 WIFI_read16(wifimac_t *wifi,u32 address) ;
#ifdef __cplusplus
}
#endif