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-rw-r--r--board/Marvell/db64460/mpsc.c1017
1 files changed, 0 insertions, 1017 deletions
diff --git a/board/Marvell/db64460/mpsc.c b/board/Marvell/db64460/mpsc.c
deleted file mode 100644
index 303a636..0000000
--- a/board/Marvell/db64460/mpsc.c
+++ /dev/null
@@ -1,1017 +0,0 @@
-/*
- * (C) Copyright 2001
- * John Clemens <clemens@mclx.com>, Mission Critical Linux, 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
- */
-
-/*************************************************************************
- * changes for Marvell DB64460 eval board 2003 by Ingo Assmus <ingo.assmus@keymile.com>
- *
- ************************************************************************/
-
-/*
- * mpsc.c - driver for console over the MPSC.
- */
-
-
-#include <common.h>
-#include <config.h>
-#include <asm/cache.h>
-
-#include <malloc.h>
-#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 (MV64460_CUNIT_BASE_ADDR_WIN_0_BIT,
- MV64460_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 (MV64460_CUNIT_BASE_ADDR_WIN_1_BIT,
- MV64460_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 (MV64460_CUNIT_BASE_ADDR_WIN_2_BIT,
- MV64460_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 (MV64460_CUNIT_BASE_ADDR_WIN_3_BIT,
- MV64460_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,
- (MV64460_SDMA_WIN_ACCESS_FULL <<
- (MV64460_CUNIT_BASE_ADDR_WIN_0_BIT * 2)));
-
-/* Setup MPSC1 access mode Window1 full access */
- GT_SET_REG_BITS (MPSC1_ACCESS_PROTECTION_REG,
- (MV64460_SDMA_WIN_ACCESS_FULL <<
- (MV64460_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 MV64460 IDMA memory decoding map.
-*
-* DESCRIPTION:
-* the MV64460 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 (MV64460_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 (MV64460_CUNIT_BASE_ADDR_REG0 + memSpace * 8,
- (baseAddress | memSpaceTarget | memSpaceAttr));
- GT_REG_WRITE ((MV64460_CUNIT_SIZE0 + memSpace * 8),
- (size - 1) & 0xffff0000);
- GT_RESET_REG_BITS (MV64460_CUNIT_BASE_ADDR_ENABLE_REG,
- 1 << memSpace);
- } else {
- /* An invalid size was specified */
- return false;
- }
- return true;
-}