diff options
Diffstat (limited to 'drivers/block/paride/ppc6lnx.c')
| -rw-r--r-- | drivers/block/paride/ppc6lnx.c | 726 |
1 files changed, 0 insertions, 726 deletions
diff --git a/drivers/block/paride/ppc6lnx.c b/drivers/block/paride/ppc6lnx.c deleted file mode 100644 index 5e5521d3b1dd..000000000000 --- a/drivers/block/paride/ppc6lnx.c +++ /dev/null @@ -1,726 +0,0 @@ -/* - ppc6lnx.c (c) 2001 Micro Solutions Inc. - Released under the terms of the GNU General Public license - - ppc6lnx.c is a par of the protocol driver for the Micro Solutions - "BACKPACK" parallel port IDE adapter - (Works on Series 6 drives) - -*/ - -//*************************************************************************** - -// PPC 6 Code in C sanitized for LINUX -// Original x86 ASM by Ron, Converted to C by Clive - -//*************************************************************************** - - -#define port_stb 1 -#define port_afd 2 -#define cmd_stb port_afd -#define port_init 4 -#define data_stb port_init -#define port_sel 8 -#define port_int 16 -#define port_dir 0x20 - -#define ECR_EPP 0x80 -#define ECR_BI 0x20 - -//*************************************************************************** - -// 60772 Commands - -#define ACCESS_REG 0x00 -#define ACCESS_PORT 0x40 - -#define ACCESS_READ 0x00 -#define ACCESS_WRITE 0x20 - -// 60772 Command Prefix - -#define CMD_PREFIX_SET 0xe0 // Special command that modifies the next command's operation -#define CMD_PREFIX_RESET 0xc0 // Resets current cmd modifier reg bits - #define PREFIX_IO16 0x01 // perform 16-bit wide I/O - #define PREFIX_FASTWR 0x04 // enable PPC mode fast-write - #define PREFIX_BLK 0x08 // enable block transfer mode - -// 60772 Registers - -#define REG_STATUS 0x00 // status register - #define STATUS_IRQA 0x01 // Peripheral IRQA line - #define STATUS_EEPROM_DO 0x40 // Serial EEPROM data bit -#define REG_VERSION 0x01 // PPC version register (read) -#define REG_HWCFG 0x02 // Hardware Config register -#define REG_RAMSIZE 0x03 // Size of RAM Buffer - #define RAMSIZE_128K 0x02 -#define REG_EEPROM 0x06 // EEPROM control register - #define EEPROM_SK 0x01 // eeprom SK bit - #define EEPROM_DI 0x02 // eeprom DI bit - #define EEPROM_CS 0x04 // eeprom CS bit - #define EEPROM_EN 0x08 // eeprom output enable -#define REG_BLKSIZE 0x08 // Block transfer len (24 bit) - -//*************************************************************************** - -typedef struct ppc_storage { - u16 lpt_addr; // LPT base address - u8 ppc_id; - u8 mode; // operating mode - // 0 = PPC Uni SW - // 1 = PPC Uni FW - // 2 = PPC Bi SW - // 3 = PPC Bi FW - // 4 = EPP Byte - // 5 = EPP Word - // 6 = EPP Dword - u8 ppc_flags; - u8 org_data; // original LPT data port contents - u8 org_ctrl; // original LPT control port contents - u8 cur_ctrl; // current control port contents -} Interface; - -//*************************************************************************** - -// ppc_flags - -#define fifo_wait 0x10 - -//*************************************************************************** - -// DONT CHANGE THESE LEST YOU BREAK EVERYTHING - BIT FIELD DEPENDENCIES - -#define PPCMODE_UNI_SW 0 -#define PPCMODE_UNI_FW 1 -#define PPCMODE_BI_SW 2 -#define PPCMODE_BI_FW 3 -#define PPCMODE_EPP_BYTE 4 -#define PPCMODE_EPP_WORD 5 -#define PPCMODE_EPP_DWORD 6 - -//*************************************************************************** - -static int ppc6_select(Interface *ppc); -static void ppc6_deselect(Interface *ppc); -static void ppc6_send_cmd(Interface *ppc, u8 cmd); -static void ppc6_wr_data_byte(Interface *ppc, u8 data); -static u8 ppc6_rd_data_byte(Interface *ppc); -static u8 ppc6_rd_port(Interface *ppc, u8 port); -static void ppc6_wr_port(Interface *ppc, u8 port, u8 data); -static void ppc6_rd_data_blk(Interface *ppc, u8 *data, long count); -static void ppc6_wait_for_fifo(Interface *ppc); -static void ppc6_wr_data_blk(Interface *ppc, u8 *data, long count); -static void ppc6_rd_port16_blk(Interface *ppc, u8 port, u8 *data, long length); -static void ppc6_wr_port16_blk(Interface *ppc, u8 port, u8 *data, long length); -static void ppc6_wr_extout(Interface *ppc, u8 regdata); -static int ppc6_open(Interface *ppc); -static void ppc6_close(Interface *ppc); - -//*************************************************************************** - -static int ppc6_select(Interface *ppc) -{ - u8 i, j, k; - - i = inb(ppc->lpt_addr + 1); - - if (i & 1) - outb(i, ppc->lpt_addr + 1); - - ppc->org_data = inb(ppc->lpt_addr); - - ppc->org_ctrl = inb(ppc->lpt_addr + 2) & 0x5F; // readback ctrl - - ppc->cur_ctrl = ppc->org_ctrl; - - ppc->cur_ctrl |= port_sel; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - if (ppc->org_data == 'b') - outb('x', ppc->lpt_addr); - - outb('b', ppc->lpt_addr); - outb('p', ppc->lpt_addr); - outb(ppc->ppc_id, ppc->lpt_addr); - outb(~ppc->ppc_id,ppc->lpt_addr); - - ppc->cur_ctrl &= ~port_sel; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - ppc->cur_ctrl = (ppc->cur_ctrl & port_int) | port_init; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - i = ppc->mode & 0x0C; - - if (i == 0) - i = (ppc->mode & 2) | 1; - - outb(i, ppc->lpt_addr); - - ppc->cur_ctrl |= port_sel; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - // DELAY - - ppc->cur_ctrl |= port_afd; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - j = ((i & 0x08) << 4) | ((i & 0x07) << 3); - - k = inb(ppc->lpt_addr + 1) & 0xB8; - - if (j == k) - { - ppc->cur_ctrl &= ~port_afd; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - k = (inb(ppc->lpt_addr + 1) & 0xB8) ^ 0xB8; - - if (j == k) - { - if (i & 4) // EPP - ppc->cur_ctrl &= ~(port_sel | port_init); - else // PPC/ECP - ppc->cur_ctrl &= ~port_sel; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - return(1); - } - } - - outb(ppc->org_ctrl, ppc->lpt_addr + 2); - - outb(ppc->org_data, ppc->lpt_addr); - - return(0); // FAIL -} - -//*************************************************************************** - -static void ppc6_deselect(Interface *ppc) -{ - if (ppc->mode & 4) // EPP - ppc->cur_ctrl |= port_init; - else // PPC/ECP - ppc->cur_ctrl |= port_sel; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - outb(ppc->org_data, ppc->lpt_addr); - - outb((ppc->org_ctrl | port_sel), ppc->lpt_addr + 2); - - outb(ppc->org_ctrl, ppc->lpt_addr + 2); -} - -//*************************************************************************** - -static void ppc6_send_cmd(Interface *ppc, u8 cmd) -{ - switch(ppc->mode) - { - case PPCMODE_UNI_SW : - case PPCMODE_UNI_FW : - case PPCMODE_BI_SW : - case PPCMODE_BI_FW : - { - outb(cmd, ppc->lpt_addr); - - ppc->cur_ctrl ^= cmd_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - break; - } - - case PPCMODE_EPP_BYTE : - case PPCMODE_EPP_WORD : - case PPCMODE_EPP_DWORD : - { - outb(cmd, ppc->lpt_addr + 3); - - break; - } - } -} - -//*************************************************************************** - -static void ppc6_wr_data_byte(Interface *ppc, u8 data) -{ - switch(ppc->mode) - { - case PPCMODE_UNI_SW : - case PPCMODE_UNI_FW : - case PPCMODE_BI_SW : - case PPCMODE_BI_FW : - { - outb(data, ppc->lpt_addr); - - ppc->cur_ctrl ^= data_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - break; - } - - case PPCMODE_EPP_BYTE : - case PPCMODE_EPP_WORD : - case PPCMODE_EPP_DWORD : - { - outb(data, ppc->lpt_addr + 4); - - break; - } - } -} - -//*************************************************************************** - -static u8 ppc6_rd_data_byte(Interface *ppc) -{ - u8 data = 0; - - switch(ppc->mode) - { - case PPCMODE_UNI_SW : - case PPCMODE_UNI_FW : - { - ppc->cur_ctrl = (ppc->cur_ctrl & ~port_stb) ^ data_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - // DELAY - - data = inb(ppc->lpt_addr + 1); - - data = ((data & 0x80) >> 1) | ((data & 0x38) >> 3); - - ppc->cur_ctrl |= port_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - // DELAY - - data |= inb(ppc->lpt_addr + 1) & 0xB8; - - break; - } - - case PPCMODE_BI_SW : - case PPCMODE_BI_FW : - { - ppc->cur_ctrl |= port_dir; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - ppc->cur_ctrl = (ppc->cur_ctrl | port_stb) ^ data_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - data = inb(ppc->lpt_addr); - - ppc->cur_ctrl &= ~port_stb; - - outb(ppc->cur_ctrl,ppc->lpt_addr + 2); - - ppc->cur_ctrl &= ~port_dir; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - break; - } - - case PPCMODE_EPP_BYTE : - case PPCMODE_EPP_WORD : - case PPCMODE_EPP_DWORD : - { - outb((ppc->cur_ctrl | port_dir),ppc->lpt_addr + 2); - - data = inb(ppc->lpt_addr + 4); - - outb(ppc->cur_ctrl,ppc->lpt_addr + 2); - - break; - } - } - - return(data); -} - -//*************************************************************************** - -static u8 ppc6_rd_port(Interface *ppc, u8 port) -{ - ppc6_send_cmd(ppc,(u8)(port | ACCESS_PORT | ACCESS_READ)); - - return(ppc6_rd_data_byte(ppc)); -} - -//*************************************************************************** - -static void ppc6_wr_port(Interface *ppc, u8 port, u8 data) -{ - ppc6_send_cmd(ppc,(u8)(port | ACCESS_PORT | ACCESS_WRITE)); - - ppc6_wr_data_byte(ppc, data); -} - -//*************************************************************************** - -static void ppc6_rd_data_blk(Interface *ppc, u8 *data, long count) -{ - switch(ppc->mode) - { - case PPCMODE_UNI_SW : - case PPCMODE_UNI_FW : - { - while(count) - { - u8 d; - - ppc->cur_ctrl = (ppc->cur_ctrl & ~port_stb) ^ data_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - // DELAY - - d = inb(ppc->lpt_addr + 1); - - d = ((d & 0x80) >> 1) | ((d & 0x38) >> 3); - - ppc->cur_ctrl |= port_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - // DELAY - - d |= inb(ppc->lpt_addr + 1) & 0xB8; - - *data++ = d; - count--; - } - - break; - } - - case PPCMODE_BI_SW : - case PPCMODE_BI_FW : - { - ppc->cur_ctrl |= port_dir; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - ppc->cur_ctrl |= port_stb; - - while(count) - { - ppc->cur_ctrl ^= data_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - *data++ = inb(ppc->lpt_addr); - count--; - } - - ppc->cur_ctrl &= ~port_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - ppc->cur_ctrl &= ~port_dir; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - break; - } - - case PPCMODE_EPP_BYTE : - { - outb((ppc->cur_ctrl | port_dir), ppc->lpt_addr + 2); - - // DELAY - - while(count) - { - *data++ = inb(ppc->lpt_addr + 4); - count--; - } - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - break; - } - - case PPCMODE_EPP_WORD : - { - outb((ppc->cur_ctrl | port_dir), ppc->lpt_addr + 2); - - // DELAY - - while(count > 1) - { - *((u16 *)data) = inw(ppc->lpt_addr + 4); - data += 2; - count -= 2; - } - - while(count) - { - *data++ = inb(ppc->lpt_addr + 4); - count--; - } - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - break; - } - - case PPCMODE_EPP_DWORD : - { - outb((ppc->cur_ctrl | port_dir),ppc->lpt_addr + 2); - - // DELAY - - while(count > 3) - { - *((u32 *)data) = inl(ppc->lpt_addr + 4); - data += 4; - count -= 4; - } - - while(count) - { - *data++ = inb(ppc->lpt_addr + 4); - count--; - } - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - break; - } - } - -} - -//*************************************************************************** - -static void ppc6_wait_for_fifo(Interface *ppc) -{ - int i; - - if (ppc->ppc_flags & fifo_wait) - { - for(i=0; i<20; i++) - inb(ppc->lpt_addr + 1); - } -} - -//*************************************************************************** - -static void ppc6_wr_data_blk(Interface *ppc, u8 *data, long count) -{ - switch(ppc->mode) - { - case PPCMODE_UNI_SW : - case PPCMODE_BI_SW : - { - while(count--) - { - outb(*data++, ppc->lpt_addr); - - ppc->cur_ctrl ^= data_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - } - - break; - } - - case PPCMODE_UNI_FW : - case PPCMODE_BI_FW : - { - u8 this, last; - - ppc6_send_cmd(ppc,(CMD_PREFIX_SET | PREFIX_FASTWR)); - - ppc->cur_ctrl |= port_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - last = *data; - - outb(last, ppc->lpt_addr); - - while(count) - { - this = *data++; - count--; - - if (this == last) - { - ppc->cur_ctrl ^= data_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - } - else - { - outb(this, ppc->lpt_addr); - - last = this; - } - } - - ppc->cur_ctrl &= ~port_stb; - - outb(ppc->cur_ctrl, ppc->lpt_addr + 2); - - ppc6_send_cmd(ppc,(CMD_PREFIX_RESET | PREFIX_FASTWR)); - - break; - } - - case PPCMODE_EPP_BYTE : - { - while(count) - { - outb(*data++,ppc->lpt_addr + 4); - count--; - } - - ppc6_wait_for_fifo(ppc); - - break; - } - - case PPCMODE_EPP_WORD : - { - while(count > 1) - { - outw(*((u16 *)data),ppc->lpt_addr + 4); - data += 2; - count -= 2; - } - - while(count) - { - outb(*data++,ppc->lpt_addr + 4); - count--; - } - - ppc6_wait_for_fifo(ppc); - - break; - } - - case PPCMODE_EPP_DWORD : - { - while(count > 3) - { - outl(*((u32 *)data),ppc->lpt_addr + 4); - data += 4; - count -= 4; - } - - while(count) - { - outb(*data++,ppc->lpt_addr + 4); - count--; - } - - ppc6_wait_for_fifo(ppc); - - break; - } - } -} - -//*************************************************************************** - -static void ppc6_rd_port16_blk(Interface *ppc, u8 port, u8 *data, long length) -{ - length = length << 1; - - ppc6_send_cmd(ppc, (REG_BLKSIZE | ACCESS_REG | ACCESS_WRITE)); - ppc6_wr_data_byte(ppc,(u8)length); - ppc6_wr_data_byte(ppc,(u8)(length >> 8)); - ppc6_wr_data_byte(ppc,0); - - ppc6_send_cmd(ppc, (CMD_PREFIX_SET | PREFIX_IO16 | PREFIX_BLK)); - - ppc6_send_cmd(ppc, (u8)(port | ACCESS_PORT | ACCESS_READ)); - - ppc6_rd_data_blk(ppc, data, length); - - ppc6_send_cmd(ppc, (CMD_PREFIX_RESET | PREFIX_IO16 | PREFIX_BLK)); -} - -//*************************************************************************** - -static void ppc6_wr_port16_blk(Interface *ppc, u8 port, u8 *data, long length) -{ - length = length << 1; - - ppc6_send_cmd(ppc, (REG_BLKSIZE | ACCESS_REG | ACCESS_WRITE)); - ppc6_wr_data_byte(ppc,(u8)length); - ppc6_wr_data_byte(ppc,(u8)(length >> 8)); - ppc6_wr_data_byte(ppc,0); - - ppc6_send_cmd(ppc, (CMD_PREFIX_SET | PREFIX_IO16 | PREFIX_BLK)); - - ppc6_send_cmd(ppc, (u8)(port | ACCESS_PORT | ACCESS_WRITE)); - - ppc6_wr_data_blk(ppc, data, length); - - ppc6_send_cmd(ppc, (CMD_PREFIX_RESET | PREFIX_IO16 | PREFIX_BLK)); -} - -//*************************************************************************** - -static void ppc6_wr_extout(Interface *ppc, u8 regdata) -{ - ppc6_send_cmd(ppc,(REG_VERSION | ACCESS_REG | ACCESS_WRITE)); - - ppc6_wr_data_byte(ppc, (u8)((regdata & 0x03) << 6)); -} - -//*************************************************************************** - -static int ppc6_open(Interface *ppc) -{ - int ret; - - ret = ppc6_select(ppc); - - if (ret == 0) - return(ret); - - ppc->ppc_flags &= ~fifo_wait; - - ppc6_send_cmd(ppc, (ACCESS_REG | ACCESS_WRITE | REG_RAMSIZE)); - ppc6_wr_data_byte(ppc, RAMSIZE_128K); - - ppc6_send_cmd(ppc, (ACCESS_REG | ACCESS_READ | REG_VERSION)); - - if ((ppc6_rd_data_byte(ppc) & 0x3F) == 0x0C) - ppc->ppc_flags |= fifo_wait; - - return(ret); -} - -//*************************************************************************** - -static void ppc6_close(Interface *ppc) -{ - ppc6_deselect(ppc); -} - -//*************************************************************************** - |