diff options
Diffstat (limited to 'board/amirix/ap1000/powerspan.c')
| -rw-r--r-- | board/amirix/ap1000/powerspan.c | 750 |
1 files changed, 0 insertions, 750 deletions
diff --git a/board/amirix/ap1000/powerspan.c b/board/amirix/ap1000/powerspan.c deleted file mode 100644 index 55451b11f..000000000 --- a/board/amirix/ap1000/powerspan.c +++ /dev/null @@ -1,750 +0,0 @@ -/** - * @file powerspan.c Source file for PowerSpan II code. - */ - -/* - * (C) Copyright 2005 - * AMIRIX Systems Inc. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <command.h> -#include <asm/processor.h> -#include "powerspan.h" -#define tolower(x) x -#include "ap1000.h" - -#ifdef INCLUDE_PCI - -/** Write one byte with byte swapping. - * @param addr [IN] the address to write to - * @param val [IN] the value to write - */ -void write1 (unsigned long addr, unsigned char val) -{ - volatile unsigned char *p = (volatile unsigned char *) addr; - -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("write1: addr=%08x val=%02x\n", addr, val); - } -#endif - *p = val; - PSII_SYNC (); -} - -/** Read one byte with byte swapping. - * @param addr [IN] the address to read from - * @return the value at addr - */ -unsigned char read1 (unsigned long addr) -{ - unsigned char val; - volatile unsigned char *p = (volatile unsigned char *) addr; - - val = *p; - PSII_SYNC (); -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("read1: addr=%08x val=%02x\n", addr, val); - } -#endif - return val; -} - -/** Write one 2-byte word with byte swapping. - * @param addr [IN] the address to write to - * @param val [IN] the value to write - */ -void write2 (unsigned long addr, unsigned short val) -{ - volatile unsigned short *p = (volatile unsigned short *) addr; - -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("write2: addr=%08x val=%04x -> *p=%04x\n", addr, val, - ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8)); - } -#endif - *p = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8); - PSII_SYNC (); -} - -/** Read one 2-byte word with byte swapping. - * @param addr [IN] the address to read from - * @return the value at addr - */ -unsigned short read2 (unsigned long addr) -{ - unsigned short val; - volatile unsigned short *p = (volatile unsigned short *) addr; - - val = *p; - val = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8); - PSII_SYNC (); -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("read2: addr=%08x *p=%04x -> val=%04x\n", addr, *p, - val); - } -#endif - return val; -} - -/** Write one 4-byte word with byte swapping. - * @param addr [IN] the address to write to - * @param val [IN] the value to write - */ -void write4 (unsigned long addr, unsigned long val) -{ - volatile unsigned long *p = (volatile unsigned long *) addr; - -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("write4: addr=%08x val=%08x -> *p=%08x\n", addr, val, - ((val & 0xFF000000) >> 24) | - ((val & 0x000000FF) << 24) | - ((val & 0x00FF0000) >> 8) | - ((val & 0x0000FF00) << 8)); - } -#endif - *p = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | - ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8); - PSII_SYNC (); -} - -/** Read one 4-byte word with byte swapping. - * @param addr [IN] the address to read from - * @return the value at addr - */ -unsigned long read4 (unsigned long addr) -{ - unsigned long val; - volatile unsigned long *p = (volatile unsigned long *) addr; - - val = *p; - val = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | - ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8); - PSII_SYNC (); -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("read4: addr=%08x *p=%08x -> val=%08x\n", addr, *p, - val); - } -#endif - return val; -} - -int PCIReadConfig (int bus, int dev, int fn, int reg, int width, - unsigned long *val) -{ - unsigned int conAdrVal; - unsigned int conDataReg = REG_CONFIG_DATA; - unsigned int status; - int ret_val = 0; - - - /* DEST bit hardcoded to 1: local pci is PCI-2 */ - /* TYPE bit is hardcoded to 1: all config cycles are local */ - conAdrVal = (1 << 24) - | ((bus & 0xFF) << 16) - | ((dev & 0xFF) << 11) - | ((fn & 0x07) << 8) - | (reg & 0xFC); - - /* clear any pending master aborts */ - write4 (REG_P1_CSR, CLEAR_MASTER_ABORT); - - /* Load the conAdrVal value first, then read from pb_conf_data */ - write4 (REG_CONFIG_ADDRESS, conAdrVal); - PSII_SYNC (); - - - /* Note: documentation does not match the pspan library code */ - /* Note: *pData comes back as -1 if device is not present */ - switch (width) { - case 4: - *(unsigned int *) val = read4 (conDataReg); - break; - case 2: - *(unsigned short *) val = read2 (conDataReg); - break; - case 1: - *(unsigned char *) val = read1 (conDataReg); - break; - default: - ret_val = ILLEGAL_REG_OFFSET; - break; - } - PSII_SYNC (); - - /* clear any pending master aborts */ - status = read4 (REG_P1_CSR); - if (status & CLEAR_MASTER_ABORT) { - ret_val = NO_DEVICE_FOUND; - write4 (REG_P1_CSR, CLEAR_MASTER_ABORT); - } - - return ret_val; -} - - -int PCIWriteConfig (int bus, int dev, int fn, int reg, int width, - unsigned long val) -{ - unsigned int conAdrVal; - unsigned int conDataReg = REG_CONFIG_DATA; - unsigned int status; - int ret_val = 0; - - - /* DEST bit hardcoded to 1: local pci is PCI-2 */ - /* TYPE bit is hardcoded to 1: all config cycles are local */ - conAdrVal = (1 << 24) - | ((bus & 0xFF) << 16) - | ((dev & 0xFF) << 11) - | ((fn & 0x07) << 8) - | (reg & 0xFC); - - /* clear any pending master aborts */ - write4 (REG_P1_CSR, CLEAR_MASTER_ABORT); - - /* Load the conAdrVal value first, then read from pb_conf_data */ - write4 (REG_CONFIG_ADDRESS, conAdrVal); - PSII_SYNC (); - - - /* Note: documentation does not match the pspan library code */ - /* Note: *pData comes back as -1 if device is not present */ - switch (width) { - case 4: - write4 (conDataReg, val); - break; - case 2: - write2 (conDataReg, val); - break; - case 1: - write1 (conDataReg, val); - break; - default: - ret_val = ILLEGAL_REG_OFFSET; - break; - } - PSII_SYNC (); - - /* clear any pending master aborts */ - status = read4 (REG_P1_CSR); - if (status & CLEAR_MASTER_ABORT) { - ret_val = NO_DEVICE_FOUND; - write4 (REG_P1_CSR, CLEAR_MASTER_ABORT); - } - - return ret_val; -} - - -int pci_read_config_byte (int bus, int dev, int fn, int reg, - unsigned char *val) -{ - unsigned long read_val; - int ret_val; - - ret_val = PCIReadConfig (bus, dev, fn, reg, 1, &read_val); - *val = read_val & 0xFF; - - return ret_val; -} - -int pci_write_config_byte (int bus, int dev, int fn, int reg, - unsigned char val) -{ - return PCIWriteConfig (bus, dev, fn, reg, 1, val); -} - -int pci_read_config_word (int bus, int dev, int fn, int reg, - unsigned short *val) -{ - unsigned long read_val; - int ret_val; - - ret_val = PCIReadConfig (bus, dev, fn, reg, 2, &read_val); - *val = read_val & 0xFFFF; - - return ret_val; -} - -int pci_write_config_word (int bus, int dev, int fn, int reg, - unsigned short val) -{ - return PCIWriteConfig (bus, dev, fn, reg, 2, val); -} - -int pci_read_config_dword (int bus, int dev, int fn, int reg, - unsigned long *val) -{ - return PCIReadConfig (bus, dev, fn, reg, 4, val); -} - -int pci_write_config_dword (int bus, int dev, int fn, int reg, - unsigned long val) -{ - return PCIWriteConfig (bus, dev, fn, reg, 4, val); -} - -#endif /* INCLUDE_PCI */ - -int I2CAccess (unsigned char theI2CAddress, unsigned char theDevCode, - unsigned char theChipSel, unsigned char *theValue, int RWFlag) -{ - int ret_val = 0; - unsigned int reg_value; - - reg_value = PowerSpanRead (REG_I2C_CSR); - - if (reg_value & I2C_CSR_ACT) { - printf ("Error: I2C busy\n"); - ret_val = I2C_BUSY; - } else { - reg_value = ((theI2CAddress & 0xFF) << 24) - | ((theDevCode & 0x0F) << 12) - | ((theChipSel & 0x07) << 9) - | I2C_CSR_ERR; - if (RWFlag == I2C_WRITE) { - reg_value |= I2C_CSR_RW | ((*theValue & 0xFF) << 16); - } - - PowerSpanWrite (REG_I2C_CSR, reg_value); - udelay (1); - - do { - reg_value = PowerSpanRead (REG_I2C_CSR); - - if ((reg_value & I2C_CSR_ACT) == 0) { - if (reg_value & I2C_CSR_ERR) { - ret_val = I2C_ERR; - } else { - *theValue = - (reg_value & I2C_CSR_DATA) >> - 16; - } - } - } while (reg_value & I2C_CSR_ACT); - } - - return ret_val; -} - -int EEPROMRead (unsigned char theI2CAddress, unsigned char *theValue) -{ - return I2CAccess (theI2CAddress, I2C_EEPROM_DEV, I2C_EEPROM_CHIP_SEL, - theValue, I2C_READ); -} - -int EEPROMWrite (unsigned char theI2CAddress, unsigned char theValue) -{ - return I2CAccess (theI2CAddress, I2C_EEPROM_DEV, I2C_EEPROM_CHIP_SEL, - &theValue, I2C_WRITE); -} - -int do_eeprom (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - char cmd; - int ret_val = 0; - unsigned int address = 0; - unsigned char value = 1; - unsigned char read_value; - int ii; - int error = 0; - unsigned char *mem_ptr; - unsigned char default_eeprom[] = EEPROM_DEFAULT; - - if (argc < 2) { - goto usage; - } - - cmd = argv[1][0]; - if (argc > 2) { - address = simple_strtoul (argv[2], NULL, 16); - if (argc > 3) { - value = simple_strtoul (argv[3], NULL, 16) & 0xFF; - } - } - - switch (cmd) { - case 'r': - if (address > 256) { - printf ("Illegal Address\n"); - goto usage; - } - printf ("@0x%x: ", address); - for (ii = 0; ii < value; ii++) { - if (EEPROMRead (address + ii, &read_value) != - 0) { - printf ("Read Error\n"); - } else { - printf ("0x%02x ", read_value); - } - - if (((ii + 1) % 16) == 0) { - printf ("\n"); - } - } - printf ("\n"); - break; - case 'w': - if (address > 256) { - printf ("Illegal Address\n"); - goto usage; - } - if (argc < 4) { - goto usage; - } - if (EEPROMWrite (address, value) != 0) { - printf ("Write Error\n"); - } - break; - case 'g': - if (argc != 3) { - goto usage; - } - mem_ptr = (unsigned char *) address; - for (ii = 0; ((ii < EEPROM_LENGTH) && (error == 0)); - ii++) { - if (EEPROMRead (ii, &read_value) != 0) { - printf ("Read Error\n"); - error = 1; - } else { - *mem_ptr = read_value; - mem_ptr++; - } - } - break; - case 'p': - if (argc != 3) { - goto usage; - } - mem_ptr = (unsigned char *) address; - for (ii = 0; ((ii < EEPROM_LENGTH) && (error == 0)); - ii++) { - if (EEPROMWrite (ii, *mem_ptr) != 0) { - printf ("Write Error\n"); - error = 1; - } - - mem_ptr++; - } - break; - case 'd': - if (argc != 2) { - goto usage; - } - for (ii = 0; ((ii < EEPROM_LENGTH) && (error == 0)); - ii++) { - if (EEPROMWrite (ii, default_eeprom[ii]) != 0) { - printf ("Write Error\n"); - error = 1; - } - } - break; - default: - goto usage; - } - - goto done; - usage: - printf ("Usage:\n%s\n", cmdtp->help); - - done: - return ret_val; - -} - -U_BOOT_CMD (eeprom, 4, 0, do_eeprom, - "read/write/copy to/from the PowerSpan II eeprom", - "eeprom r OFF [NUM]\n" - " - read NUM words starting at OFF\n" - "eeprom w OFF VAL\n" - " - write word VAL at offset OFF\n" - "eeprom g ADD\n" - " - store contents of eeprom at address ADD\n" - "eeprom p ADD\n" - " - put data stored at address ADD into the eeprom\n" - "eeprom d\n" " - return eeprom to default contents"); - -unsigned int PowerSpanRead (unsigned int theOffset) -{ - volatile unsigned int *ptr = - (volatile unsigned int *) (PSPAN_BASEADDR + theOffset); - unsigned int ret_val; - -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("PowerSpanRead: offset=%08x ", theOffset); - } -#endif - ret_val = *ptr; - PSII_SYNC (); - -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("value=%08x\n", ret_val); - } -#endif - - return ret_val; -} - -void PowerSpanWrite (unsigned int theOffset, unsigned int theValue) -{ - volatile unsigned int *ptr = - (volatile unsigned int *) (PSPAN_BASEADDR + theOffset); -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("PowerSpanWrite: offset=%08x val=%02x\n", theOffset, - theValue); - } -#endif - *ptr = theValue; - PSII_SYNC (); -} - -/** - * Sets the indicated bits in the indicated register. - * @param theOffset [IN] the register to access. - * @param theMask [IN] bits set in theMask will be set in the register. - */ -void PowerSpanSetBits (unsigned int theOffset, unsigned int theMask) -{ - volatile unsigned int *ptr = - (volatile unsigned int *) (PSPAN_BASEADDR + theOffset); - unsigned int register_value; - -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("PowerSpanSetBits: offset=%08x mask=%02x\n", - theOffset, theMask); - } -#endif - register_value = *ptr; - PSII_SYNC (); - - register_value |= theMask; - *ptr = register_value; - PSII_SYNC (); -} - -/** - * Clears the indicated bits in the indicated register. - * @param theOffset [IN] the register to access. - * @param theMask [IN] bits set in theMask will be cleared in the register. - */ -void PowerSpanClearBits (unsigned int theOffset, unsigned int theMask) -{ - volatile unsigned int *ptr = - (volatile unsigned int *) (PSPAN_BASEADDR + theOffset); - unsigned int register_value; - -#ifdef VERBOSITY - if (gVerbosityLevel > 1) { - printf ("PowerSpanClearBits: offset=%08x mask=%02x\n", - theOffset, theMask); - } -#endif - register_value = *ptr; - PSII_SYNC (); - - register_value &= ~theMask; - *ptr = register_value; - PSII_SYNC (); -} - -/** - * Configures a slave image on the local bus, based on the parameters and some hardcoded system values. - * Slave Images are images that cause the PowerSpan II to be a master on the PCI bus. Thus, they - * are outgoing from the standpoint of the local bus. - * @param theImageIndex [IN] the PowerSpan II image to set (assumed to be 0-7). - * @param theBlockSize [IN] the block size of the image (as used by PowerSpan II: PB_SIx_CTL[BS]). - * @param theMemIOFlag [IN] if PX_TGT_USE_MEM_IO, this image will have the MEM_IO bit set. - * @param theEndianness [IN] the endian bits for the image (already shifted, use defines). - * @param theLocalBaseAddr [IN] the Local address for the image (assumed to be valid with provided block size). - * @param thePCIBaseAddr [IN] the PCI address for the image (assumed to be valid with provided block size). - */ -int SetSlaveImage (int theImageIndex, unsigned int theBlockSize, - int theMemIOFlag, int theEndianness, - unsigned int theLocalBaseAddr, unsigned int thePCIBaseAddr) -{ - unsigned int reg_offset = theImageIndex * PB_SLAVE_IMAGE_OFF; - unsigned int reg_value = 0; - - /* Make sure that the Slave Image is disabled */ - PowerSpanClearBits ((REGS_PB_SLAVE_CSR + reg_offset), - PB_SLAVE_CSR_IMG_EN); - - /* Setup the mask required for requested PB Slave Image configuration */ - reg_value = PB_SLAVE_CSR_TA_EN | theEndianness | (theBlockSize << 24); - if (theMemIOFlag == PB_SLAVE_USE_MEM_IO) { - reg_value |= PB_SLAVE_CSR_MEM_IO; - } - - /* hardcoding the following: - TA_EN = 1 - MD_EN = 0 - MODE = 0 - PRKEEP = 0 - RD_AMT = 0 - */ - PowerSpanWrite ((REGS_PB_SLAVE_CSR + reg_offset), reg_value); - - /* these values are not checked by software */ - PowerSpanWrite ((REGS_PB_SLAVE_BADDR + reg_offset), theLocalBaseAddr); - PowerSpanWrite ((REGS_PB_SLAVE_TADDR + reg_offset), thePCIBaseAddr); - - /* Enable the Slave Image */ - PowerSpanSetBits ((REGS_PB_SLAVE_CSR + reg_offset), - PB_SLAVE_CSR_IMG_EN); - - return 0; -} - -/** - * Configures a target image on the local bus, based on the parameters and some hardcoded system values. - * Target Images are used when the PowerSpan II is acting as a target for an access. Thus, they - * are incoming from the standpoint of the local bus. - * In order to behave better on the host PCI bus, if thePCIBaseAddr is NULL (0x00000000), then the PCI - * base address will not be updated; makes sense given that the hosts own memory should be mapped to - * PCI address 0x00000000. - * @param theImageIndex [IN] the PowerSpan II image to set. - * @param theBlockSize [IN] the block size of the image (as used by PowerSpan II: Px_TIx_CTL[BS]). - * @param theMemIOFlag [IN] if PX_TGT_USE_MEM_IO, this image will have the MEM_IO bit set. - * @param theEndianness [IN] the endian bits for the image (already shifted, use defines). - * @param theLocalBaseAddr [IN] the Local address for the image (assumed to be valid with provided block size). - * @param thePCIBaseAddr [IN] the PCI address for the image (assumed to be valid with provided block size). - */ -int SetTargetImage (int theImageIndex, unsigned int theBlockSize, - int theMemIOFlag, int theEndianness, - unsigned int theLocalBaseAddr, - unsigned int thePCIBaseAddr) -{ - unsigned int csr_reg_offset = theImageIndex * P1_TGT_IMAGE_OFF; - unsigned int pci_reg_offset = theImageIndex * P1_BST_OFF; - unsigned int reg_value = 0; - - /* Make sure that the Slave Image is disabled */ - PowerSpanClearBits ((REGS_P1_TGT_CSR + csr_reg_offset), - PB_SLAVE_CSR_IMG_EN); - - /* Setup the mask required for requested PB Slave Image configuration */ - reg_value = - PX_TGT_CSR_TA_EN | PX_TGT_CSR_BAR_EN | (theBlockSize << 24) | - PX_TGT_CSR_RTT_READ | PX_TGT_CSR_WTT_WFLUSH | theEndianness; - if (theMemIOFlag == PX_TGT_USE_MEM_IO) { - reg_value |= PX_TGT_MEM_IO; - } - - /* hardcoding the following: - TA_EN = 1 - BAR_EN = 1 - MD_EN = 0 - MODE = 0 - DEST = 0 - RTT = 01010 - GBL = 0 - CI = 0 - WTT = 00010 - PRKEEP = 0 - MRA = 0 - RD_AMT = 0 - */ - PowerSpanWrite ((REGS_P1_TGT_CSR + csr_reg_offset), reg_value); - - PowerSpanWrite ((REGS_P1_TGT_TADDR + csr_reg_offset), - theLocalBaseAddr); - - if (thePCIBaseAddr != (unsigned int) NULL) { - PowerSpanWrite ((REGS_P1_BST + pci_reg_offset), - thePCIBaseAddr); - } - - /* Enable the Slave Image */ - PowerSpanSetBits ((REGS_P1_TGT_CSR + csr_reg_offset), - PB_SLAVE_CSR_IMG_EN); - - return 0; -} - -int do_bridge (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - char cmd; - int ret_val = 1; - unsigned int image_index; - unsigned int block_size; - unsigned int mem_io; - unsigned int local_addr; - unsigned int pci_addr; - int endianness; - - if (argc != 8) { - goto usage; - } - - cmd = argv[1][0]; - image_index = simple_strtoul (argv[2], NULL, 16); - block_size = simple_strtoul (argv[3], NULL, 16); - mem_io = simple_strtoul (argv[4], NULL, 16); - endianness = argv[5][0]; - local_addr = simple_strtoul (argv[6], NULL, 16); - pci_addr = simple_strtoul (argv[7], NULL, 16); - - - switch (cmd) { - case 'i': - if (tolower (endianness) == 'b') { - endianness = PX_TGT_CSR_BIG_END; - } else if (tolower (endianness) == 'l') { - endianness = PX_TGT_CSR_TRUE_LEND; - } else { - goto usage; - } - SetTargetImage (image_index, block_size, mem_io, - endianness, local_addr, pci_addr); - break; - case 'o': - if (tolower (endianness) == 'b') { - endianness = PB_SLAVE_CSR_BIG_END; - } else if (tolower (endianness) == 'l') { - endianness = PB_SLAVE_CSR_TRUE_LEND; - } else { - goto usage; - } - SetSlaveImage (image_index, block_size, mem_io, - endianness, local_addr, pci_addr); - break; - default: - goto usage; - } - - goto done; -usage: - printf ("Usage:\n%s\n", cmdtp->help); - -done: - return ret_val; -} |