From 03b004074fb641cffd7d2150505ef8afc13231bf Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Tue, 21 Oct 2014 15:23:32 +0200 Subject: PowerPC: drop some 74xx_7xx boards and related code The file board/Marvell/include/mv_gen_reg.h is incompatible with the GPL (see for example the "MARVELL RESERVES THE RIGHT AT ITS SOLE DISCRETION TO REQUEST THAT THIS CODE BE IMMEDIATELY RETURNED TO MARVELL" clause). As this cannot be fixed, we remove the file and all code that depends on it. Fortunately this only affects some very old boards that have long reached EOL: CPCI750 DB64360 DB64460 p3m750 p3m7448 Signed-off-by: Wolfgang Denk Cc: Reinhard Arlt Cc: Stefan Roese Cc: Roger Meier --- board/Marvell/db64360/mpsc.c | 1001 ------------------------------------------ 1 file changed, 1001 deletions(-) delete mode 100644 board/Marvell/db64360/mpsc.c (limited to 'board/Marvell/db64360/mpsc.c') diff --git a/board/Marvell/db64360/mpsc.c b/board/Marvell/db64360/mpsc.c deleted file mode 100644 index d87f18e..0000000 --- a/board/Marvell/db64360/mpsc.c +++ /dev/null @@ -1,1001 +0,0 @@ -/* - * (C) Copyright 2001 - * John Clemens , Mission Critical Linux, Inc. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/************************************************************************* - * changes for Marvell DB64360 eval board 2003 by Ingo Assmus - * - ************************************************************************/ - -/* - * mpsc.c - driver for console over the MPSC. - */ - - -#include -#include -#include - -#include -#include "mpsc.h" - -#include "mv_regs.h" - -#include "../include/memory.h" - -DECLARE_GLOBAL_DATA_PTR; - -/* Define this if you wish to use the MPSC as a register based UART. - * This will force the serial port to not use the SDMA engine at all. - */ -#undef CONFIG_MPSC_DEBUG_PORT - - -int (*mpsc_putchar) (char ch) = mpsc_putchar_early; -char (*mpsc_getchar) (void) = mpsc_getchar_debug; -int (*mpsc_test_char) (void) = mpsc_test_char_debug; - - -static volatile unsigned int *rx_desc_base = NULL; -static unsigned int rx_desc_index = 0; -static volatile unsigned int *tx_desc_base = NULL; -static unsigned int tx_desc_index = 0; - -/* local function declarations */ -static int galmpsc_connect (int channel, int connect); -static int galmpsc_route_rx_clock (int channel, int brg); -static int galmpsc_route_tx_clock (int channel, int brg); -static int galmpsc_write_config_regs (int mpsc, int mode); -static int galmpsc_config_channel_regs (int mpsc); -static int galmpsc_set_char_length (int mpsc, int value); -static int galmpsc_set_stop_bit_length (int mpsc, int value); -static int galmpsc_set_parity (int mpsc, int value); -static int galmpsc_enter_hunt (int mpsc); -static int galmpsc_set_brkcnt (int mpsc, int value); -static int galmpsc_set_tcschar (int mpsc, int value); -static int galmpsc_set_snoop (int mpsc, int value); -static int galmpsc_shutdown (int mpsc); - -static int galsdma_set_RFT (int channel); -static int galsdma_set_SFM (int channel); -static int galsdma_set_rxle (int channel); -static int galsdma_set_txle (int channel); -static int galsdma_set_burstsize (int channel, unsigned int value); -static int galsdma_set_RC (int channel, unsigned int value); - -static int galbrg_set_CDV (int channel, int value); -static int galbrg_enable (int channel); -static int galbrg_disable (int channel); -static int galbrg_set_clksrc (int channel, int value); -static int galbrg_set_CUV (int channel, int value); - -static void galsdma_enable_rx (void); -static int galsdma_set_mem_space (unsigned int memSpace, - unsigned int memSpaceTarget, - unsigned int memSpaceAttr, - unsigned int baseAddress, - unsigned int size); - - -#define SOFTWARE_CACHE_MANAGEMENT - -#ifdef SOFTWARE_CACHE_MANAGEMENT -#define FLUSH_DCACHE(a,b) if(dcache_status()){clean_dcache_range((u32)(a),(u32)(b));} -#define FLUSH_AND_INVALIDATE_DCACHE(a,b) if(dcache_status()){flush_dcache_range((u32)(a),(u32)(b));} -#define INVALIDATE_DCACHE(a,b) if(dcache_status()){invalidate_dcache_range((u32)(a),(u32)(b));} -#else -#define FLUSH_DCACHE(a,b) -#define FLUSH_AND_INVALIDATE_DCACHE(a,b) -#define INVALIDATE_DCACHE(a,b) -#endif - -#ifdef CONFIG_MPSC_DEBUG_PORT -static void mpsc_debug_init (void) -{ - - volatile unsigned int temp; - - /* Clear the CFR (CHR4) */ - /* Write random 'Z' bit (bit 29) of CHR4 to enable debug uart *UNDOCUMENTED FEATURE* */ - temp = GTREGREAD (GALMPSC_CHANNELREG_4 + (CHANNEL * GALMPSC_REG_GAP)); - temp &= 0xffffff00; - temp |= BIT29; - GT_REG_WRITE (GALMPSC_CHANNELREG_4 + (CHANNEL * GALMPSC_REG_GAP), - temp); - - /* Set the Valid bit 'V' (bit 12) and int generation bit 'INT' (bit 15) */ - temp = GTREGREAD (GALMPSC_CHANNELREG_5 + (CHANNEL * GALMPSC_REG_GAP)); - temp |= (BIT12 | BIT15); - GT_REG_WRITE (GALMPSC_CHANNELREG_5 + (CHANNEL * GALMPSC_REG_GAP), - temp); - - /* Set int mask */ - temp = GTREGREAD (GALMPSC_0_INT_MASK); - temp |= BIT6; - GT_REG_WRITE (GALMPSC_0_INT_MASK, temp); -} -#endif - -char mpsc_getchar_debug (void) -{ - volatile int temp; - volatile unsigned int cause; - - cause = GTREGREAD (GALMPSC_0_INT_CAUSE); - while ((cause & BIT6) == 0) { - cause = GTREGREAD (GALMPSC_0_INT_CAUSE); - } - - temp = GTREGREAD (GALMPSC_CHANNELREG_10 + - (CHANNEL * GALMPSC_REG_GAP)); - /* By writing 1's to the set bits, the register is cleared */ - GT_REG_WRITE (GALMPSC_CHANNELREG_10 + (CHANNEL * GALMPSC_REG_GAP), - temp); - GT_REG_WRITE (GALMPSC_0_INT_CAUSE, cause & ~BIT6); - return (temp >> 16) & 0xff; -} - -/* special function for running out of flash. doesn't modify any - * global variables [josh] */ -int mpsc_putchar_early (char ch) -{ - int mpsc = CHANNEL; - int temp = - GTREGREAD (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP)); - galmpsc_set_tcschar (mpsc, ch); - GT_REG_WRITE (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP), - temp | 0x200); - -#define MAGIC_FACTOR (10*1000000) - - udelay (MAGIC_FACTOR / gd->baudrate); - return 0; -} - -/* This is used after relocation, see serial.c and mpsc_init2 */ -static int mpsc_putchar_sdma (char ch) -{ - volatile unsigned int *p; - unsigned int temp; - - - /* align the descriptor */ - p = tx_desc_base; - memset ((void *) p, 0, 8 * sizeof (unsigned int)); - - /* fill one 64 bit buffer */ - /* word swap, pad with 0 */ - p[4] = 0; /* x */ - p[5] = (unsigned int) ch; /* x */ - - /* CHANGED completely according to GT64260A dox - NTL */ - p[0] = 0x00010001; /* 0 */ - p[1] = DESC_OWNER_BIT | DESC_FIRST | DESC_LAST; /* 4 */ - p[2] = 0; /* 8 */ - p[3] = (unsigned int) &p[4]; /* c */ - -#if 0 - p[9] = DESC_FIRST | DESC_LAST; - p[10] = (unsigned int) &p[0]; - p[11] = (unsigned int) &p[12]; -#endif - - FLUSH_DCACHE (&p[0], &p[8]); - - GT_REG_WRITE (GALSDMA_0_CUR_TX_PTR + (CHANNEL * GALSDMA_REG_DIFF), - (unsigned int) &p[0]); - GT_REG_WRITE (GALSDMA_0_FIR_TX_PTR + (CHANNEL * GALSDMA_REG_DIFF), - (unsigned int) &p[0]); - - temp = GTREGREAD (GALSDMA_0_COM_REG + (CHANNEL * GALSDMA_REG_DIFF)); - temp |= (TX_DEMAND | TX_STOP); - GT_REG_WRITE (GALSDMA_0_COM_REG + (CHANNEL * GALSDMA_REG_DIFF), temp); - - INVALIDATE_DCACHE (&p[1], &p[2]); - - while (p[1] & DESC_OWNER_BIT) { - udelay (100); - INVALIDATE_DCACHE (&p[1], &p[2]); - } - return 0; -} - -char mpsc_getchar_sdma (void) -{ - static unsigned int done = 0; - volatile char ch; - unsigned int len = 0, idx = 0, temp; - - volatile unsigned int *p; - - - do { - p = &rx_desc_base[rx_desc_index * 8]; - - INVALIDATE_DCACHE (&p[0], &p[1]); - /* Wait for character */ - while (p[1] & DESC_OWNER_BIT) { - udelay (100); - INVALIDATE_DCACHE (&p[0], &p[1]); - } - - /* Handle error case */ - if (p[1] & (1 << 15)) { - printf ("oops, error: %08x\n", p[1]); - - temp = GTREGREAD (GALMPSC_CHANNELREG_2 + - (CHANNEL * GALMPSC_REG_GAP)); - temp |= (1 << 23); - GT_REG_WRITE (GALMPSC_CHANNELREG_2 + - (CHANNEL * GALMPSC_REG_GAP), temp); - - /* Can't poll on abort bit, so we just wait. */ - udelay (100); - - galsdma_enable_rx (); - } - - /* Number of bytes left in this descriptor */ - len = p[0] & 0xffff; - - if (len) { - /* Where to look */ - idx = 5; - if (done > 3) - idx = 4; - if (done > 7) - idx = 7; - if (done > 11) - idx = 6; - - INVALIDATE_DCACHE (&p[idx], &p[idx + 1]); - ch = p[idx] & 0xff; - done++; - } - - if (done < len) { - /* this descriptor has more bytes still - * shift down the char we just read, and leave the - * buffer in place for the next time around - */ - p[idx] = p[idx] >> 8; - FLUSH_DCACHE (&p[idx], &p[idx + 1]); - } - - if (done == len) { - /* nothing left in this descriptor. - * go to next one - */ - p[1] = DESC_OWNER_BIT | DESC_FIRST | DESC_LAST; - p[0] = 0x00100000; - FLUSH_DCACHE (&p[0], &p[1]); - /* Next descriptor */ - rx_desc_index = (rx_desc_index + 1) % RX_DESC; - done = 0; - } - } while (len == 0); /* galileo bug.. len might be zero */ - - return ch; -} - - -int mpsc_test_char_debug (void) -{ - if ((GTREGREAD (GALMPSC_0_INT_CAUSE) & BIT6) == 0) - return 0; - else { - return 1; - } -} - - -int mpsc_test_char_sdma (void) -{ - volatile unsigned int *p = &rx_desc_base[rx_desc_index * 8]; - - INVALIDATE_DCACHE (&p[1], &p[2]); - - if (p[1] & DESC_OWNER_BIT) - return 0; - else - return 1; -} - -int mpsc_init (int baud) -{ - /* BRG CONFIG */ - galbrg_set_baudrate (CHANNEL, baud); - galbrg_set_clksrc (CHANNEL, 8); /* set source=Tclk */ - galbrg_set_CUV (CHANNEL, 0); /* set up CountUpValue */ - galbrg_enable (CHANNEL); /* Enable BRG */ - - /* Set up clock routing */ - galmpsc_connect (CHANNEL, GALMPSC_CONNECT); /* connect it */ - - galmpsc_route_rx_clock (CHANNEL, CHANNEL); /* chosse BRG0 for Rx */ - galmpsc_route_tx_clock (CHANNEL, CHANNEL); /* chose BRG0 for Tx */ - - /* reset MPSC state */ - galmpsc_shutdown (CHANNEL); - - /* SDMA CONFIG */ - galsdma_set_burstsize (CHANNEL, L1_CACHE_BYTES / 8); /* in 64 bit words (8 bytes) */ - galsdma_set_txle (CHANNEL); - galsdma_set_rxle (CHANNEL); - galsdma_set_RC (CHANNEL, 0xf); - galsdma_set_SFM (CHANNEL); - galsdma_set_RFT (CHANNEL); - - /* MPSC CONFIG */ - galmpsc_write_config_regs (CHANNEL, GALMPSC_UART); - galmpsc_config_channel_regs (CHANNEL); - galmpsc_set_char_length (CHANNEL, GALMPSC_CHAR_LENGTH_8); /* 8 */ - galmpsc_set_parity (CHANNEL, GALMPSC_PARITY_NONE); /* N */ - galmpsc_set_stop_bit_length (CHANNEL, GALMPSC_STOP_BITS_1); /* 1 */ - -#ifdef CONFIG_MPSC_DEBUG_PORT - mpsc_debug_init (); -#endif - - /* COMM_MPSC CONFIG */ -#ifdef SOFTWARE_CACHE_MANAGEMENT - galmpsc_set_snoop (CHANNEL, 0); /* disable snoop */ -#else - galmpsc_set_snoop (CHANNEL, 1); /* enable snoop */ -#endif - - return 0; -} - - -void mpsc_sdma_init (void) -{ -/* Setup SDMA channel0 SDMA_CONFIG_REG*/ - GT_REG_WRITE (SDMA_CONFIG_REG (0), 0x000020ff); - -/* Enable MPSC-Window0 for DRAM Bank0 */ - if (galsdma_set_mem_space (MV64360_CUNIT_BASE_ADDR_WIN_0_BIT, - MV64360_SDMA_DRAM_CS_0_TARGET, - 0, - memoryGetBankBaseAddress - (CS_0_LOW_DECODE_ADDRESS), - memoryGetBankSize (BANK0)) != true) - printf ("%s: SDMA_Window0 memory setup failed !!! \n", - __FUNCTION__); - - -/* Disable MPSC-Window1 */ - if (galsdma_set_mem_space (MV64360_CUNIT_BASE_ADDR_WIN_1_BIT, - MV64360_SDMA_DRAM_CS_0_TARGET, - 0, - memoryGetBankBaseAddress - (CS_1_LOW_DECODE_ADDRESS), - memoryGetBankSize (BANK3)) != true) - printf ("%s: SDMA_Window1 memory setup failed !!! \n", - __FUNCTION__); - - -/* Disable MPSC-Window2 */ - if (galsdma_set_mem_space (MV64360_CUNIT_BASE_ADDR_WIN_2_BIT, - MV64360_SDMA_DRAM_CS_0_TARGET, - 0, - memoryGetBankBaseAddress - (CS_2_LOW_DECODE_ADDRESS), - memoryGetBankSize (BANK3)) != true) - printf ("%s: SDMA_Window2 memory setup failed !!! \n", - __FUNCTION__); - - -/* Disable MPSC-Window3 */ - if (galsdma_set_mem_space (MV64360_CUNIT_BASE_ADDR_WIN_3_BIT, - MV64360_SDMA_DRAM_CS_0_TARGET, - 0, - memoryGetBankBaseAddress - (CS_3_LOW_DECODE_ADDRESS), - memoryGetBankSize (BANK3)) != true) - printf ("%s: SDMA_Window3 memory setup failed !!! \n", - __FUNCTION__); - -/* Setup MPSC0 access mode Window0 full access */ - GT_SET_REG_BITS (MPSC0_ACCESS_PROTECTION_REG, - (MV64360_SDMA_WIN_ACCESS_FULL << - (MV64360_CUNIT_BASE_ADDR_WIN_0_BIT * 2))); - -/* Setup MPSC1 access mode Window1 full access */ - GT_SET_REG_BITS (MPSC1_ACCESS_PROTECTION_REG, - (MV64360_SDMA_WIN_ACCESS_FULL << - (MV64360_CUNIT_BASE_ADDR_WIN_0_BIT * 2))); - -/* Setup MPSC internal address space base address */ - GT_REG_WRITE (CUNIT_INTERNAL_SPACE_BASE_ADDR_REG, CONFIG_SYS_GT_REGS); - -/* no high address remap*/ - GT_REG_WRITE (CUNIT_HIGH_ADDR_REMAP_REG0, 0x00); - GT_REG_WRITE (CUNIT_HIGH_ADDR_REMAP_REG1, 0x00); - -/* clear interrupt cause register for MPSC (fault register)*/ - GT_REG_WRITE (CUNIT_INTERRUPT_CAUSE_REG, 0x00); -} - - -void mpsc_init2 (void) -{ - int i; - -#ifndef CONFIG_MPSC_DEBUG_PORT - mpsc_putchar = mpsc_putchar_sdma; - mpsc_getchar = mpsc_getchar_sdma; - mpsc_test_char = mpsc_test_char_sdma; -#endif - /* RX descriptors */ - rx_desc_base = (unsigned int *) malloc (((RX_DESC + 1) * 8) * - sizeof (unsigned int)); - - /* align descriptors */ - rx_desc_base = (unsigned int *) - (((unsigned int) rx_desc_base + 32) & 0xFFFFFFF0); - - rx_desc_index = 0; - - memset ((void *) rx_desc_base, 0, - (RX_DESC * 8) * sizeof (unsigned int)); - - for (i = 0; i < RX_DESC; i++) { - rx_desc_base[i * 8 + 3] = (unsigned int) &rx_desc_base[i * 8 + 4]; /* Buffer */ - rx_desc_base[i * 8 + 2] = (unsigned int) &rx_desc_base[(i + 1) * 8]; /* Next descriptor */ - rx_desc_base[i * 8 + 1] = DESC_OWNER_BIT | DESC_FIRST | DESC_LAST; /* Command & control */ - rx_desc_base[i * 8] = 0x00100000; - } - rx_desc_base[(i - 1) * 8 + 2] = (unsigned int) &rx_desc_base[0]; - - FLUSH_DCACHE (&rx_desc_base[0], &rx_desc_base[RX_DESC * 8]); - GT_REG_WRITE (GALSDMA_0_CUR_RX_PTR + (CHANNEL * GALSDMA_REG_DIFF), - (unsigned int) &rx_desc_base[0]); - - /* TX descriptors */ - tx_desc_base = (unsigned int *) malloc (((TX_DESC + 1) * 8) * - sizeof (unsigned int)); - - /* align descriptors */ - tx_desc_base = (unsigned int *) - (((unsigned int) tx_desc_base + 32) & 0xFFFFFFF0); - - tx_desc_index = -1; - - memset ((void *) tx_desc_base, 0, - (TX_DESC * 8) * sizeof (unsigned int)); - - for (i = 0; i < TX_DESC; i++) { - tx_desc_base[i * 8 + 5] = (unsigned int) 0x23232323; - tx_desc_base[i * 8 + 4] = (unsigned int) 0x23232323; - tx_desc_base[i * 8 + 3] = - (unsigned int) &tx_desc_base[i * 8 + 4]; - tx_desc_base[i * 8 + 2] = - (unsigned int) &tx_desc_base[(i + 1) * 8]; - tx_desc_base[i * 8 + 1] = - DESC_OWNER_BIT | DESC_FIRST | DESC_LAST; - - /* set sbytecnt and shadow byte cnt to 1 */ - tx_desc_base[i * 8] = 0x00010001; - } - tx_desc_base[(i - 1) * 8 + 2] = (unsigned int) &tx_desc_base[0]; - - FLUSH_DCACHE (&tx_desc_base[0], &tx_desc_base[TX_DESC * 8]); - - udelay (100); - - galsdma_enable_rx (); - - return; -} - -int galbrg_set_baudrate (int channel, int rate) -{ - int clock; - - galbrg_disable (channel); /*ok */ - -#ifdef ZUMA_NTL - /* from tclk */ - clock = (CONFIG_SYS_TCLK / (16 * rate)) - 1; -#else - clock = (CONFIG_SYS_TCLK / (16 * rate)) - 1; -#endif - - galbrg_set_CDV (channel, clock); /* set timer Reg. for BRG */ - - galbrg_enable (channel); - - gd->baudrate = rate; - - return 0; -} - -/* ------------------------------------------------------------------ */ - -/* Below are all the private functions that no one else needs */ - -static int galbrg_set_CDV (int channel, int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP)); - temp &= 0xFFFF0000; - temp |= (value & 0x0000FFFF); - GT_REG_WRITE (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP), temp); - - return 0; -} - -static int galbrg_enable (int channel) -{ - unsigned int temp; - - temp = GTREGREAD (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP)); - temp |= 0x00010000; - GT_REG_WRITE (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP), temp); - - return 0; -} - -static int galbrg_disable (int channel) -{ - unsigned int temp; - - temp = GTREGREAD (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP)); - temp &= 0xFFFEFFFF; - GT_REG_WRITE (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP), temp); - - return 0; -} - -static int galbrg_set_clksrc (int channel, int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP)); - temp &= 0xFFC3FFFF; /* Bit 18 - 21 (MV 64260 18-22) */ - temp |= (value << 18); - GT_REG_WRITE (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP), temp); - return 0; -} - -static int galbrg_set_CUV (int channel, int value) -{ - /* set CountUpValue */ - GT_REG_WRITE (GALBRG_0_BTREG + (channel * GALBRG_REG_GAP), value); - - return 0; -} - -#if 0 -static int galbrg_reset (int channel) -{ - unsigned int temp; - - temp = GTREGREAD (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP)); - temp |= 0x20000; - GT_REG_WRITE (GALBRG_0_CONFREG + (channel * GALBRG_REG_GAP), temp); - - return 0; -} -#endif - -static int galsdma_set_RFT (int channel) -{ - unsigned int temp; - - temp = GTREGREAD (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF)); - temp |= 0x00000001; - GT_REG_WRITE (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF), - temp); - - return 0; -} - -static int galsdma_set_SFM (int channel) -{ - unsigned int temp; - - temp = GTREGREAD (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF)); - temp |= 0x00000002; - GT_REG_WRITE (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF), - temp); - - return 0; -} - -static int galsdma_set_rxle (int channel) -{ - unsigned int temp; - - temp = GTREGREAD (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF)); - temp |= 0x00000040; - GT_REG_WRITE (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF), - temp); - - return 0; -} - -static int galsdma_set_txle (int channel) -{ - unsigned int temp; - - temp = GTREGREAD (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF)); - temp |= 0x00000080; - GT_REG_WRITE (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF), - temp); - - return 0; -} - -static int galsdma_set_RC (int channel, unsigned int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF)); - temp &= ~0x0000003c; - temp |= (value << 2); - GT_REG_WRITE (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF), - temp); - - return 0; -} - -static int galsdma_set_burstsize (int channel, unsigned int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALSDMA_0_CONF_REG + (channel * GALSDMA_REG_DIFF)); - temp &= 0xFFFFCFFF; - switch (value) { - case 8: - GT_REG_WRITE (GALSDMA_0_CONF_REG + - (channel * GALSDMA_REG_DIFF), - (temp | (0x3 << 12))); - break; - - case 4: - GT_REG_WRITE (GALSDMA_0_CONF_REG + - (channel * GALSDMA_REG_DIFF), - (temp | (0x2 << 12))); - break; - - case 2: - GT_REG_WRITE (GALSDMA_0_CONF_REG + - (channel * GALSDMA_REG_DIFF), - (temp | (0x1 << 12))); - break; - - case 1: - GT_REG_WRITE (GALSDMA_0_CONF_REG + - (channel * GALSDMA_REG_DIFF), - (temp | (0x0 << 12))); - break; - - default: - return -1; - break; - } - - return 0; -} - -static int galmpsc_connect (int channel, int connect) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_ROUTING_REGISTER); - - if ((channel == 0) && connect) - temp &= ~0x00000007; - else if ((channel == 1) && connect) - temp &= ~(0x00000007 << 6); - else if ((channel == 0) && !connect) - temp |= 0x00000007; - else - temp |= (0x00000007 << 6); - - /* Just in case... */ - temp &= 0x3fffffff; - - GT_REG_WRITE (GALMPSC_ROUTING_REGISTER, temp); - - return 0; -} - -static int galmpsc_route_rx_clock (int channel, int brg) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_RxC_ROUTE); - - if (channel == 0) { - temp &= ~0x0000000F; - temp |= brg; - } else { - temp &= ~0x00000F00; - temp |= (brg << 8); - } - - GT_REG_WRITE (GALMPSC_RxC_ROUTE, temp); - - return 0; -} - -static int galmpsc_route_tx_clock (int channel, int brg) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_TxC_ROUTE); - - if (channel == 0) { - temp &= ~0x0000000F; - temp |= brg; - } else { - temp &= ~0x00000F00; - temp |= (brg << 8); - } - - GT_REG_WRITE (GALMPSC_TxC_ROUTE, temp); - - return 0; -} - -static int galmpsc_write_config_regs (int mpsc, int mode) -{ - if (mode == GALMPSC_UART) { - /* Main config reg Low (Null modem, Enable Tx/Rx, UART mode) */ - GT_REG_WRITE (GALMPSC_MCONF_LOW + (mpsc * GALMPSC_REG_GAP), - 0x000004c4); - - /* Main config reg High (32x Rx/Tx clock mode, width=8bits */ - GT_REG_WRITE (GALMPSC_MCONF_HIGH + (mpsc * GALMPSC_REG_GAP), - 0x024003f8); - /* 22 2222 1111 */ - /* 54 3210 9876 */ - /* 0000 0010 0000 0000 */ - /* 1 */ - /* 098 7654 3210 */ - /* 0000 0011 1111 1000 */ - } else - return -1; - - return 0; -} - -static int galmpsc_config_channel_regs (int mpsc) -{ - GT_REG_WRITE (GALMPSC_CHANNELREG_1 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_3 + (mpsc * GALMPSC_REG_GAP), 1); - GT_REG_WRITE (GALMPSC_CHANNELREG_4 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_5 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_6 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_7 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_8 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_9 + (mpsc * GALMPSC_REG_GAP), 0); - GT_REG_WRITE (GALMPSC_CHANNELREG_10 + (mpsc * GALMPSC_REG_GAP), 0); - - galmpsc_set_brkcnt (mpsc, 0x3); - galmpsc_set_tcschar (mpsc, 0xab); - - return 0; -} - -static int galmpsc_set_brkcnt (int mpsc, int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_CHANNELREG_1 + (mpsc * GALMPSC_REG_GAP)); - temp &= 0x0000FFFF; - temp |= (value << 16); - GT_REG_WRITE (GALMPSC_CHANNELREG_1 + (mpsc * GALMPSC_REG_GAP), temp); - - return 0; -} - -static int galmpsc_set_tcschar (int mpsc, int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_CHANNELREG_1 + (mpsc * GALMPSC_REG_GAP)); - temp &= 0xFFFF0000; - temp |= value; - GT_REG_WRITE (GALMPSC_CHANNELREG_1 + (mpsc * GALMPSC_REG_GAP), temp); - - return 0; -} - -static int galmpsc_set_char_length (int mpsc, int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_PROTOCONF_REG + (mpsc * GALMPSC_REG_GAP)); - temp &= 0xFFFFCFFF; - temp |= (value << 12); - GT_REG_WRITE (GALMPSC_PROTOCONF_REG + (mpsc * GALMPSC_REG_GAP), temp); - - return 0; -} - -static int galmpsc_set_stop_bit_length (int mpsc, int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_PROTOCONF_REG + (mpsc * GALMPSC_REG_GAP)); - temp &= 0xFFFFBFFF; - temp |= (value << 14); - GT_REG_WRITE (GALMPSC_PROTOCONF_REG + (mpsc * GALMPSC_REG_GAP), temp); - - return 0; -} - -static int galmpsc_set_parity (int mpsc, int value) -{ - unsigned int temp; - - temp = GTREGREAD (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP)); - if (value != -1) { - temp &= 0xFFF3FFF3; - temp |= ((value << 18) | (value << 2)); - temp |= ((value << 17) | (value << 1)); - } else { - temp &= 0xFFF1FFF1; - } - - GT_REG_WRITE (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP), temp); - - return 0; -} - -static int galmpsc_enter_hunt (int mpsc) -{ - int temp; - - temp = GTREGREAD (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP)); - temp |= 0x80000000; - GT_REG_WRITE (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP), temp); - - while (GTREGREAD (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP)) & - MPSC_ENTER_HUNT) { - udelay (1); - } - return 0; -} - - -static int galmpsc_shutdown (int mpsc) -{ - unsigned int temp; - - /* cause RX abort (clears RX) */ - temp = GTREGREAD (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP)); - temp |= MPSC_RX_ABORT | MPSC_TX_ABORT; - temp &= ~MPSC_ENTER_HUNT; - GT_REG_WRITE (GALMPSC_CHANNELREG_2 + (mpsc * GALMPSC_REG_GAP), temp); - - GT_REG_WRITE (GALSDMA_0_COM_REG, 0); - GT_REG_WRITE (GALSDMA_0_COM_REG, SDMA_TX_ABORT | SDMA_RX_ABORT); - - /* shut down the MPSC */ - GT_REG_WRITE (GALMPSC_MCONF_LOW, 0); - GT_REG_WRITE (GALMPSC_MCONF_HIGH, 0); - GT_REG_WRITE (GALMPSC_PROTOCONF_REG + (mpsc * GALMPSC_REG_GAP), 0); - - udelay (100); - - /* shut down the sdma engines. */ - /* reset config to default */ - GT_REG_WRITE (GALSDMA_0_CONF_REG, 0x000000fc); - - udelay (100); - - /* clear the SDMA current and first TX and RX pointers */ - GT_REG_WRITE (GALSDMA_0_CUR_RX_PTR, 0); - GT_REG_WRITE (GALSDMA_0_CUR_TX_PTR, 0); - GT_REG_WRITE (GALSDMA_0_FIR_TX_PTR, 0); - - udelay (100); - - return 0; -} - -static void galsdma_enable_rx (void) -{ - int temp; - - /* Enable RX processing */ - temp = GTREGREAD (GALSDMA_0_COM_REG + (CHANNEL * GALSDMA_REG_DIFF)); - temp |= RX_ENABLE; - GT_REG_WRITE (GALSDMA_0_COM_REG + (CHANNEL * GALSDMA_REG_DIFF), temp); - - galmpsc_enter_hunt (CHANNEL); -} - -static int galmpsc_set_snoop (int mpsc, int value) -{ - int reg = - mpsc ? MPSC_1_ADDRESS_CONTROL_LOW : - MPSC_0_ADDRESS_CONTROL_LOW; - int temp = GTREGREAD (reg); - - if (value) - temp |= (1 << 6) | (1 << 14) | (1 << 22) | (1 << 30); - else - temp &= ~((1 << 6) | (1 << 14) | (1 << 22) | (1 << 30)); - GT_REG_WRITE (reg, temp); - return 0; -} - -/******************************************************************************* -* galsdma_set_mem_space - Set MV64360 IDMA memory decoding map. -* -* DESCRIPTION: -* the MV64360 SDMA has its own address decoding map that is de-coupled -* from the CPU interface address decoding windows. The SDMA channels -* share four address windows. Each region can be individually configured -* by this function by associating it to a target interface and setting -* base and size values. -* -* NOTE!!! -* The size must be in 64Kbyte granularity. -* The base address must be aligned to the size. -* The size must be a series of 1s followed by a series of zeros -* -* OUTPUT: -* None. -* -* RETURN: -* true for success, false otherwise. -* -*******************************************************************************/ - -static int galsdma_set_mem_space (unsigned int memSpace, - unsigned int memSpaceTarget, - unsigned int memSpaceAttr, - unsigned int baseAddress, unsigned int size) -{ - unsigned int temp; - - if (size == 0) { - GT_RESET_REG_BITS (MV64360_CUNIT_BASE_ADDR_ENABLE_REG, - 1 << memSpace); - return true; - } - - /* The base address must be aligned to the size. */ - if (baseAddress % size != 0) { - return false; - } - if (size < 0x10000) { - return false; - } - - /* Align size and base to 64K */ - baseAddress &= 0xffff0000; - size &= 0xffff0000; - temp = size >> 16; - - /* Checking that the size is a sequence of '1' followed by a - sequence of '0' starting from LSB to MSB. */ - while ((temp > 0) && (temp & 0x1)) { - temp = temp >> 1; - } - - if (temp != 0) { - GT_REG_WRITE (MV64360_CUNIT_BASE_ADDR_REG0 + memSpace * 8, - (baseAddress | memSpaceTarget | memSpaceAttr)); - GT_REG_WRITE ((MV64360_CUNIT_SIZE0 + memSpace * 8), - (size - 1) & 0xffff0000); - GT_RESET_REG_BITS (MV64360_CUNIT_BASE_ADDR_ENABLE_REG, - 1 << memSpace); - } else { - /* An invalid size was specified */ - return false; - } - return true; -} -- cgit v1.1