/* sd2snes - SD card based universal cartridge for the SNES Copyright (C) 2009-2010 Maximilian Rehkopf uC firmware portion Inspired by and based on code from sd2iec, written by Ingo Korb et al. See sdcard.c|h, config.h. FAT file system access based on code by ChaN, Jim Brain, Ingo Korb, see ff.c|h. 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; version 2 of the License only. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA fpga_spi.h: functions for SPI ctrl, SRAM interfacing and feature configuration */ #ifndef _FPGA_SPI_H #define _FPGA_SPI_H #include #include "bits.h" #include "spi.h" #include "config.h" #define FPGA_SS_BIT 16 #define FPGA_SS_REG LPC_GPIO0 #define FPGA_SELECT() do {FPGA_TX_SYNC(); BITBAND(FPGA_SS_REG->FIOCLR, FPGA_SS_BIT) = 1;} while (0) #define FPGA_SELECT_ASYNC() do {BITBAND(FPGA_SS_REG->FIOCLR, FPGA_SS_BIT) = 1;} while (0) #define FPGA_DESELECT() do {FPGA_TX_SYNC(); BITBAND(FPGA_SS_REG->FIOSET, FPGA_SS_BIT) = 1;} while (0) #define FPGA_DESELECT_ASYNC() do {BITBAND(FPGA_SS_REG->FIOSET, FPGA_SS_BIT) = 1;} while (0) #define FPGA_TX_SYNC() spi_tx_sync() #define FPGA_TX_BYTE(x) spi_tx_byte(x) #define FPGA_RX_BYTE() spi_rx_byte() #define FPGA_TXRX_BYTE(x) spi_txrx_byte(x) #define FPGA_TX_BLOCK(x,y) spi_tx_block(x,y) #define FPGA_RX_BLOCK(x,y) spi_rx_block(x,y) #define FEAT_213F (1 << 4) #define FEAT_MSU1 (1 << 3) #define FEAT_SRTC (1 << 2) #define FEAT_ST0010 (1 << 1) #define FEAT_DSPX (1 << 0) #define FEAT_CX4 (1 << 4) #define FPGA_WAIT_RDY() do {while(BITBAND(SSP_REGS->SR, SSP_BSY)); while(!BITBAND(FPGA_MCU_RDY_REG->FIOPIN, FPGA_MCU_RDY_BIT));} while (0) /* command parameters */ #define FPGA_MEM_AUTOINC (0x8) #define FPGA_SDDMA_PARTIAL (0x4) #define FPGA_TGT_MEM (0x0) #define FPGA_TGT_DACBUF (0x1) #define FPGA_TGT_MSUBUF (0x2) /* commands */ #define FPGA_CMD_SETADDR (0x00) #define FPGA_CMD_SETROMMASK (0x10) #define FPGA_CMD_SETRAMMASK (0x20) #define FPGA_CMD_SETMAPPER(x) (0x30 | (x & 15)) #define FPGA_CMD_SDDMA (0x40) #define FPGA_CMD_SDDMA_RANGE (0x60) #define FPGA_CMD_READMEM (0x80) #define FPGA_CMD_WRITEMEM (0x90) #define FPGA_CMD_MSUSETBITS (0xe0) #define FPGA_CMD_DACPAUSE (0xe1) #define FPGA_CMD_DACPLAY (0xe2) #define FPGA_CMD_DACRESETPTR (0xe3) #define FPGA_CMD_MSUSETPTR (0xe4) #define FPGA_CMD_RTCSET (0xe5) #define FPGA_CMD_BSXSETBITS (0xe6) #define FPGA_CMD_SRTCRESET (0xe7) #define FPGA_CMD_DSPRESETPTR (0xe8) #define FPGA_CMD_DSPWRITEPGM (0xe9) #define FPGA_CMD_DSPWRITEDAT (0xea) #define FPGA_CMD_DSPRESET (0xeb) #define FPGA_CMD_DSPUNRESET (0xec) #define FPGA_CMD_SETFEATURE (0xed) #define FPGA_CMD_SET213F (0xee) #define FPGA_CMD_TEST (0xf0) #define FPGA_CMD_GETSTATUS (0xf1) #define FPGA_CMD_MSUGETADDR (0xf2) #define FPGA_CMD_MSUGETTRACK (0xf3) #define FPGA_CMD_GETSYSCLK (0xfe) #define FPGA_CMD_ECHO (0xff) void fpga_spi_init(void); uint8_t fpga_test(void); uint16_t fpga_status(void); void spi_fpga(void); void spi_sd(void); void spi_none(void); void set_mcu_addr(uint32_t); void set_dac_addr(uint16_t); void dac_play(void); void dac_pause(void); void dac_reset(void); void msu_reset(uint16_t); void set_msu_addr(uint16_t); void set_msu_status(uint8_t set, uint8_t reset); void set_saveram_mask(uint32_t); void set_rom_mask(uint32_t); void set_mapper(uint8_t val); void fpga_sddma(uint8_t tgt, uint8_t partial); void fpga_set_sddma_range(uint16_t start, uint16_t end); uint16_t get_msu_track(void); uint32_t get_msu_offset(void); uint32_t get_snes_sysclk(void); void set_bsx_regs(uint8_t set, uint8_t reset); void set_fpga_time(uint64_t time); void fpga_reset_srtc_state(void); void fpga_reset_dspx_addr(void); void fpga_write_dspx_pgm(uint32_t data); void fpga_write_dspx_dat(uint16_t data); void fpga_dspx_reset(uint8_t reset); void fpga_set_features(uint8_t feat); void fpga_set_213f(uint8_t data); #endif