diff options
Diffstat (limited to 'common/cmd_fdc.c')
| -rw-r--r-- | common/cmd_fdc.c | 62 |
1 files changed, 60 insertions, 2 deletions
diff --git a/common/cmd_fdc.c b/common/cmd_fdc.c index e45b336..3ee342f 100644 --- a/common/cmd_fdc.c +++ b/common/cmd_fdc.c @@ -188,6 +188,30 @@ static FDC_COMMAND_STRUCT cmd; /* global command struct */ #endif +#ifdef CONFIG_AMIGAONEG3SE +unsigned char INT6_Status; + +void fdc_interrupt(void) +{ + INT6_Status = 0x80; +} + +/* waits for an interrupt (polling) */ +int wait_for_fdc_int(void) +{ + unsigned long timeout; + timeout = FDC_TIME_OUT; + while(((volatile)INT6_Status & 0x80) == 0) { + timeout--; + udelay(10); + if(timeout == 0) /* timeout occured */ + return FALSE; + } + INT6_Status = 0; + return TRUE; +} +#endif + /* Supporting Functions */ /* reads a Register of the FDC */ unsigned char read_fdc_reg(unsigned int addr) @@ -210,6 +234,7 @@ void write_fdc_reg(unsigned int addr, unsigned char val) tmp[0]=val; } +#ifndef CONFIG_AMIGAONEG3SE /* waits for an interrupt (polling) */ int wait_for_fdc_int(void) { @@ -224,6 +249,7 @@ int wait_for_fdc_int(void) return TRUE; } +#endif /* reads a byte from the FIFO of the FDC and checks direction and RQM bit of the MSR. returns -1 if timeout, or byte if ok */ @@ -416,7 +442,7 @@ int fdc_seek(FDC_COMMAND_STRUCT *pCMD,FD_GEO_STRUCT *pFG) return(fdc_issue_cmd(pCMD,pFG)); } - +#ifndef CONFIG_AMIGAONEG3SE /* terminates current command, by not servicing the FIFO * waits for interrupt and fills in the result bytes */ int fdc_terminate(FDC_COMMAND_STRUCT *pCMD) @@ -430,6 +456,27 @@ int fdc_terminate(FDC_COMMAND_STRUCT *pCMD) } return TRUE; } +#endif +#ifdef CONFIG_AMIGAONEG3SE +int fdc_terminate(FDC_COMMAND_STRUCT *pCMD) +{ + int i; + for(i=0;i<100;i++) + udelay(500); /* wait 500usec for fifo overrun */ + while((INT6_Status&0x80)==0x00); /* wait as long as no int has occured */ + for(i=0;i<7;i++) { + pCMD->result[i]=(unsigned char)read_fdc_byte(); + } + INT6_Status = 0; + return TRUE; +} + +#endif + +#ifdef CONFIG_AMIGAONEG3SE +#define disable_interrupts() 0 +#define enable_interrupts() (void)0 +#endif /* reads data from FDC, seek commands are issued automatic */ int fdc_read_data(unsigned char *buffer, unsigned long blocks,FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG) @@ -550,6 +597,11 @@ retrycal: return TRUE; } +#ifdef CONFIG_AMIGAONEG3SE +#undef disable_interrupts() +#undef enable_interrupts() +#endif + /* Scan all drives and check if drive is present and disk is inserted */ int fdc_check_drive(FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG) { @@ -590,6 +642,7 @@ int fdc_check_drive(FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG) } + /************************************************************************** * int fdc_setup * setup the fdc according the datasheet @@ -597,9 +650,13 @@ int fdc_check_drive(FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG) */ int fdc_setup(int drive, FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG) { - int i; +#ifdef CONFIG_AMIGAONEG3SE + irq_install_handler(6, (interrupt_handler_t *)fdc_interrupt, NULL); + i8259_unmask_irq(6); +#endif + #ifdef CFG_FDC_HW_INIT fdc_hw_init (); #endif @@ -648,6 +705,7 @@ int fdc_setup(int drive, FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG) /* then, we clear the reset in the DOR */ /* fdc_check_drive(pCMD,pFG); */ /* write_fdc_reg(FDC_DOR,0x04); */ + return TRUE; } #endif /* ((CONFIG_COMMANDS & CFG_CMD_FDC)||(CONFIG_COMMANDS & CFG_CMD_FDOS))*/ |