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-rw-r--r--arch/mips/pmc-sierra/yosemite/Makefile8
-rw-r--r--arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c171
-rw-r--r--arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.h69
-rw-r--r--arch/mips/pmc-sierra/yosemite/dbg_io.c180
-rw-r--r--arch/mips/pmc-sierra/yosemite/ht-irq.c53
-rw-r--r--arch/mips/pmc-sierra/yosemite/ht.c454
-rw-r--r--arch/mips/pmc-sierra/yosemite/i2c-yosemite.c188
-rw-r--r--arch/mips/pmc-sierra/yosemite/i2c-yosemite.h96
-rw-r--r--arch/mips/pmc-sierra/yosemite/irq-handler.S93
-rw-r--r--arch/mips/pmc-sierra/yosemite/irq.c167
-rw-r--r--arch/mips/pmc-sierra/yosemite/prom.c141
-rw-r--r--arch/mips/pmc-sierra/yosemite/py-console.c114
-rw-r--r--arch/mips/pmc-sierra/yosemite/setup.c235
-rw-r--r--arch/mips/pmc-sierra/yosemite/setup.h32
-rw-r--r--arch/mips/pmc-sierra/yosemite/smp.c172
15 files changed, 2173 insertions, 0 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/Makefile b/arch/mips/pmc-sierra/yosemite/Makefile
new file mode 100644
index 00000000000..ae96a71a308
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for the PMC-Sierra Titan
+#
+
+obj-y += irq-handler.o irq.o i2c-yosemite.o prom.o py-console.o setup.o
+
+obj-$(CONFIG_KGDB) += dbg_io.o
+obj-$(CONFIG_SMP) += smp.o
diff --git a/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c b/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c
new file mode 100644
index 00000000000..b067988614c
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c
@@ -0,0 +1,171 @@
+/*
+ * arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c
+ *
+ * Copyright (C) 2003 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Description:
+ *
+ * This code reads the ATMEL 24CXX EEPROM. The PMC-Sierra Yosemite board uses the ATMEL
+ * 24C32/24C64 which uses two byte addressing as compared to 24C16. Note that this program
+ * uses the serial port like /dev/ttyS0, to communicate with the EEPROM. Hence, you are
+ * expected to have a connectivity from the EEPROM to the serial port. This program does
+ * __not__ communicate using the I2C protocol
+ */
+
+#include "atmel_read_eeprom.h"
+
+static void delay(int delay)
+{
+ while (delay--);
+}
+
+static void send_bit(unsigned char bit)
+{
+ scl_lo;
+ delay(TXX);
+ if (bit)
+ sda_hi;
+ else
+ sda_lo;
+
+ delay(TXX);
+ scl_hi;
+ delay(TXX);
+}
+
+static void send_ack(void)
+{
+ send_bit(0);
+}
+
+static void send_byte(unsigned char byte)
+{
+ int i = 0;
+
+ for (i = 7; i >= 0; i--)
+ send_bit((byte >> i) & 0x01);
+}
+
+static void send_start(void)
+{
+ sda_hi;
+ delay(TXX);
+ scl_hi;
+ delay(TXX);
+ sda_lo;
+ delay(TXX);
+}
+
+static void send_stop(void)
+{
+ sda_lo;
+ delay(TXX);
+ scl_hi;
+ delay(TXX);
+ sda_hi;
+ delay(TXX);
+}
+
+static void do_idle(void)
+{
+ sda_hi;
+ scl_hi;
+ vcc_off;
+}
+
+static int recv_bit(void)
+{
+ int status;
+
+ scl_lo;
+ delay(TXX);
+ sda_hi;
+ delay(TXX);
+ scl_hi;
+ delay(TXX);
+
+ return 1;
+}
+
+static unsigned char recv_byte(void) {
+ int i;
+ unsigned char byte=0;
+
+ for (i=7;i>=0;i--)
+ byte |= (recv_bit() << i);
+
+ return byte;
+}
+
+static int recv_ack(void)
+{
+ unsigned int ack;
+
+ ack = (unsigned int)recv_bit();
+ scl_lo;
+
+ if (ack) {
+ do_idle();
+ printk(KERN_ERR "Error reading the Atmel 24C32/24C64 EEPROM \n");
+ return -1;
+ }
+
+ return ack;
+}
+
+/*
+ * This function does the actual read of the EEPROM. It needs the buffer into which the
+ * read data is copied, the size of the EEPROM being read and the buffer size
+ */
+int read_eeprom(char *buffer, int eeprom_size, int size)
+{
+ int i = 0, err;
+
+ send_start();
+ send_byte(W_HEADER);
+ recv_ack();
+
+ /* EEPROM with size of more then 2K need two byte addressing */
+ if (eeprom_size > 2048) {
+ send_byte(0x00);
+ recv_ack();
+ }
+
+ send_start();
+ send_byte(R_HEADER);
+ err = recv_ack();
+ if (err == -1)
+ return err;
+
+ for (i = 0; i < size; i++) {
+ *buffer++ = recv_byte();
+ send_ack();
+ }
+
+ /* Note : We should do some check if the buffer contains correct information */
+
+ send_stop();
+}
diff --git a/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.h b/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.h
new file mode 100644
index 00000000000..d27566d99ff
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.h
@@ -0,0 +1,69 @@
+/*
+ * arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c
+ *
+ * Copyright (C) 2003 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Header file for atmel_read_eeprom.c
+ */
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+#include <asm/pci.h>
+#include <asm/io.h>
+#include <linux/init.h>
+#include <asm/termios.h>
+#include <asm/ioctls.h>
+#include <linux/ioctl.h>
+#include <linux/fcntl.h>
+
+#define DEFAULT_PORT "/dev/ttyS0" /* Port to open */
+#define TXX 0 /* Dummy loop for spinning */
+
+#define BLOCK_SEL 0x00
+#define SLAVE_ADDR 0xa0
+#define READ_BIT 0x01
+#define WRITE_BIT 0x00
+#define R_HEADER SLAVE_ADDR + BLOCK_SEL + READ_BIT
+#define W_HEADER SLAVE_ADDR + BLOCK_SEL + WRITE_BIT
+
+/*
+ * Clock, Voltages and Data
+ */
+#define vcc_off (ioctl(fd, TIOCSBRK, 0))
+#define vcc_on (ioctl(fd, TIOCCBRK, 0))
+#define sda_hi (ioctl(fd, TIOCMBIS, &dtr))
+#define sda_lo (ioctl(fd, TIOCMBIC, &dtr))
+#define scl_lo (ioctl(fd, TIOCMBIC, &rts))
+#define scl_hi (ioctl(fd, TIOCMBIS, &rts))
+
+const char rts = TIOCM_RTS;
+const char dtr = TIOCM_DTR;
+int fd;
+
diff --git a/arch/mips/pmc-sierra/yosemite/dbg_io.c b/arch/mips/pmc-sierra/yosemite/dbg_io.c
new file mode 100644
index 00000000000..0f659c9106a
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/dbg_io.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright 2003 PMC-Sierra
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Support for KGDB for the Yosemite board. We make use of single serial
+ * port to be used for KGDB as well as console. The second serial port
+ * seems to be having a problem. Single IRQ is allocated for both the
+ * ports. Hence, the interrupt routing code needs to figure out whether
+ * the interrupt came from channel A or B.
+ */
+
+#include <asm/serial.h>
+
+/*
+ * Baud rate, Parity, Data and Stop bit settings for the
+ * serial port on the Yosemite. Note that the Early printk
+ * patch has been added. So, we should be all set to go
+ */
+#define YOSEMITE_BAUD_2400 2400
+#define YOSEMITE_BAUD_4800 4800
+#define YOSEMITE_BAUD_9600 9600
+#define YOSEMITE_BAUD_19200 19200
+#define YOSEMITE_BAUD_38400 38400
+#define YOSEMITE_BAUD_57600 57600
+#define YOSEMITE_BAUD_115200 115200
+
+#define YOSEMITE_PARITY_NONE 0
+#define YOSEMITE_PARITY_ODD 0x08
+#define YOSEMITE_PARITY_EVEN 0x18
+#define YOSEMITE_PARITY_MARK 0x28
+#define YOSEMITE_PARITY_SPACE 0x38
+
+#define YOSEMITE_DATA_5BIT 0x0
+#define YOSEMITE_DATA_6BIT 0x1
+#define YOSEMITE_DATA_7BIT 0x2
+#define YOSEMITE_DATA_8BIT 0x3
+
+#define YOSEMITE_STOP_1BIT 0x0
+#define YOSEMITE_STOP_2BIT 0x4
+
+/* This is crucial */
+#define SERIAL_REG_OFS 0x1
+
+#define SERIAL_RCV_BUFFER 0x0
+#define SERIAL_TRANS_HOLD 0x0
+#define SERIAL_SEND_BUFFER 0x0
+#define SERIAL_INTR_ENABLE (1 * SERIAL_REG_OFS)
+#define SERIAL_INTR_ID (2 * SERIAL_REG_OFS)
+#define SERIAL_DATA_FORMAT (3 * SERIAL_REG_OFS)
+#define SERIAL_LINE_CONTROL (3 * SERIAL_REG_OFS)
+#define SERIAL_MODEM_CONTROL (4 * SERIAL_REG_OFS)
+#define SERIAL_RS232_OUTPUT (4 * SERIAL_REG_OFS)
+#define SERIAL_LINE_STATUS (5 * SERIAL_REG_OFS)
+#define SERIAL_MODEM_STATUS (6 * SERIAL_REG_OFS)
+#define SERIAL_RS232_INPUT (6 * SERIAL_REG_OFS)
+#define SERIAL_SCRATCH_PAD (7 * SERIAL_REG_OFS)
+
+#define SERIAL_DIVISOR_LSB (0 * SERIAL_REG_OFS)
+#define SERIAL_DIVISOR_MSB (1 * SERIAL_REG_OFS)
+
+/*
+ * Functions to READ and WRITE to serial port 0
+ */
+#define SERIAL_READ(ofs) (*((volatile unsigned char*) \
+ (TITAN_SERIAL_BASE + ofs)))
+
+#define SERIAL_WRITE(ofs, val) ((*((volatile unsigned char*) \
+ (TITAN_SERIAL_BASE + ofs))) = val)
+
+/*
+ * Functions to READ and WRITE to serial port 1
+ */
+#define SERIAL_READ_1(ofs) (*((volatile unsigned char*) \
+ (TITAN_SERIAL_BASE_1 + ofs)
+
+#define SERIAL_WRITE_1(ofs, val) ((*((volatile unsigned char*) \
+ (TITAN_SERIAL_BASE_1 + ofs))) = val)
+
+/*
+ * Second serial port initialization
+ */
+void init_second_port(void)
+{
+ /* Disable Interrupts */
+ SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x0);
+ SERIAL_WRITE_1(SERIAL_INTR_ENABLE, 0x0);
+
+ {
+ unsigned int divisor;
+
+ SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x80);
+ divisor = TITAN_SERIAL_BASE_BAUD / YOSEMITE_BAUD_115200;
+ SERIAL_WRITE_1(SERIAL_DIVISOR_LSB, divisor & 0xff);
+
+ SERIAL_WRITE_1(SERIAL_DIVISOR_MSB,
+ (divisor & 0xff00) >> 8);
+ SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x0);
+ }
+
+ SERIAL_WRITE_1(SERIAL_DATA_FORMAT, YOSEMITE_DATA_8BIT |
+ YOSEMITE_PARITY_NONE | YOSEMITE_STOP_1BIT);
+
+ /* Enable Interrupts */
+ SERIAL_WRITE_1(SERIAL_INTR_ENABLE, 0xf);
+}
+
+/* Initialize the serial port for KGDB debugging */
+void debugInit(unsigned int baud, unsigned char data, unsigned char parity,
+ unsigned char stop)
+{
+ /* Disable Interrupts */
+ SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x0);
+ SERIAL_WRITE(SERIAL_INTR_ENABLE, 0x0);
+
+ {
+ unsigned int divisor;
+
+ SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x80);
+
+ divisor = TITAN_SERIAL_BASE_BAUD / baud;
+ SERIAL_WRITE(SERIAL_DIVISOR_LSB, divisor & 0xff);
+
+ SERIAL_WRITE(SERIAL_DIVISOR_MSB, (divisor & 0xff00) >> 8);
+ SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x0);
+ }
+
+ SERIAL_WRITE(SERIAL_DATA_FORMAT, data | parity | stop);
+}
+
+static int remoteDebugInitialized = 0;
+
+unsigned char getDebugChar(void)
+{
+ if (!remoteDebugInitialized) {
+ remoteDebugInitialized = 1;
+ debugInit(YOSEMITE_BAUD_115200,
+ YOSEMITE_DATA_8BIT,
+ YOSEMITE_PARITY_NONE, YOSEMITE_STOP_1BIT);
+ }
+
+ while ((SERIAL_READ(SERIAL_LINE_STATUS) & 0x1) == 0);
+ return SERIAL_READ(SERIAL_RCV_BUFFER);
+}
+
+int putDebugChar(unsigned char byte)
+{
+ if (!remoteDebugInitialized) {
+ remoteDebugInitialized = 1;
+ debugInit(YOSEMITE_BAUD_115200,
+ YOSEMITE_DATA_8BIT,
+ YOSEMITE_PARITY_NONE, YOSEMITE_STOP_1BIT);
+ }
+
+ while ((SERIAL_READ(SERIAL_LINE_STATUS) & 0x20) == 0);
+ SERIAL_WRITE(SERIAL_SEND_BUFFER, byte);
+
+ return 1;
+}
diff --git a/arch/mips/pmc-sierra/yosemite/ht-irq.c b/arch/mips/pmc-sierra/yosemite/ht-irq.c
new file mode 100644
index 00000000000..d22c9ffe491
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/ht-irq.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2003 PMC-Sierra
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <asm/pci.h>
+
+/*
+ * HT Bus fixup for the Titan
+ * XXX IRQ values need to change based on the board layout
+ */
+void __init titan_ht_pcibios_fixup_bus(struct pci_bus *bus)
+{
+ struct pci_bus *current_bus = bus;
+ struct pci_dev *devices;
+ struct list_head *devices_link;
+
+ list_for_each(devices_link, &(current_bus->devices)) {
+ devices = pci_dev_b(devices_link);
+ if (devices == NULL)
+ continue;
+ }
+
+ /*
+ * PLX and SPKT related changes go here
+ */
+
+}
diff --git a/arch/mips/pmc-sierra/yosemite/ht.c b/arch/mips/pmc-sierra/yosemite/ht.c
new file mode 100644
index 00000000000..dad228d3a22
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/ht.c
@@ -0,0 +1,454 @@
+/*
+ * Copyright 2003 PMC-Sierra
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+#include <asm/pci.h>
+#include <asm/io.h>
+
+#include <linux/init.h>
+#include <asm/titan_dep.h>
+
+#ifdef CONFIG_HYPERTRANSPORT
+
+
+/*
+ * This function check if the Hypertransport Link Initialization completed. If
+ * it did, then proceed further with scanning bus #2
+ */
+static __inline__ int check_titan_htlink(void)
+{
+ u32 val;
+
+ val = *(volatile uint32_t *)(RM9000x2_HTLINK_REG);
+ if (val & 0x00000020)
+ /* HT Link Initialization completed */
+ return 1;
+ else
+ return 0;
+}
+
+static int titan_ht_config_read_dword(struct pci_dev *device,
+ int offset, u32* val)
+{
+ int dev, bus, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address;
+
+ bus = device->bus->number;
+ dev = PCI_SLOT(device->devfn);
+ func = PCI_FUNC(device->devfn);
+
+ /* XXX Need to change the Bus # */
+ if (bus > 2)
+ address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
+ 0x80000000 | 0x1;
+ else
+ address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
+
+ address_reg = RM9000x2_OCD_HTCFGA;
+ data_reg = RM9000x2_OCD_HTCFGD;
+
+ RM9K_WRITE(address_reg, address);
+ RM9K_READ(data_reg, val);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+static int titan_ht_config_read_word(struct pci_dev *device,
+ int offset, u16* val)
+{
+ int dev, bus, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address;
+
+ bus = device->bus->number;
+ dev = PCI_SLOT(device->devfn);
+ func = PCI_FUNC(device->devfn);
+
+ /* XXX Need to change the Bus # */
+ if (bus > 2)
+ address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
+ 0x80000000 | 0x1;
+ else
+ address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
+
+ address_reg = RM9000x2_OCD_HTCFGA;
+ data_reg = RM9000x2_OCD_HTCFGD;
+
+ if ((offset & 0x3) == 0)
+ offset = 0x2;
+ else
+ offset = 0x0;
+
+ RM9K_WRITE(address_reg, address);
+ RM9K_READ_16(data_reg + offset, val);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+u32 longswap(unsigned long l)
+{
+ unsigned char b1,b2,b3,b4;
+
+ b1 = l&255;
+ b2 = (l>>8)&255;
+ b3 = (l>>16)&255;
+ b4 = (l>>24)&255;
+
+ return ((b1<<24) + (b2<<16) + (b3<<8) + b4);
+}
+
+
+static int titan_ht_config_read_byte(struct pci_dev *device,
+ int offset, u8* val)
+{
+ int dev, bus, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address;
+ int offset1;
+
+ bus = device->bus->number;
+ dev = PCI_SLOT(device->devfn);
+ func = PCI_FUNC(device->devfn);
+
+ /* XXX Need to change the Bus # */
+ if (bus > 2)
+ address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
+ 0x80000000 | 0x1;
+ else
+ address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
+
+ address_reg = RM9000x2_OCD_HTCFGA;
+ data_reg = RM9000x2_OCD_HTCFGD;
+
+ RM9K_WRITE(address_reg, address);
+
+ if ((offset & 0x3) == 0) {
+ offset1 = 0x3;
+ }
+ if ((offset & 0x3) == 1) {
+ offset1 = 0x2;
+ }
+ if ((offset & 0x3) == 2) {
+ offset1 = 0x1;
+ }
+ if ((offset & 0x3) == 3) {
+ offset1 = 0x0;
+ }
+ RM9K_READ_8(data_reg + offset1, val);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+static int titan_ht_config_write_dword(struct pci_dev *device,
+ int offset, u8 val)
+{
+ int dev, bus, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address;
+
+ bus = device->bus->number;
+ dev = PCI_SLOT(device->devfn);
+ func = PCI_FUNC(device->devfn);
+
+ /* XXX Need to change the Bus # */
+ if (bus > 2)
+ address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
+ 0x80000000 | 0x1;
+ else
+ address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
+
+ address_reg = RM9000x2_OCD_HTCFGA;
+ data_reg = RM9000x2_OCD_HTCFGD;
+
+ RM9K_WRITE(address_reg, address);
+ RM9K_WRITE(data_reg, val);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int titan_ht_config_write_word(struct pci_dev *device,
+ int offset, u8 val)
+{
+ int dev, bus, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address;
+
+ bus = device->bus->number;
+ dev = PCI_SLOT(device->devfn);
+ func = PCI_FUNC(device->devfn);
+
+ /* XXX Need to change the Bus # */
+ if (bus > 2)
+ address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
+ 0x80000000 | 0x1;
+ else
+ address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
+
+ address_reg = RM9000x2_OCD_HTCFGA;
+ data_reg = RM9000x2_OCD_HTCFGD;
+
+ if ((offset & 0x3) == 0)
+ offset = 0x2;
+ else
+ offset = 0x0;
+
+ RM9K_WRITE(address_reg, address);
+ RM9K_WRITE_16(data_reg + offset, val);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int titan_ht_config_write_byte(struct pci_dev *device,
+ int offset, u8 val)
+{
+ int dev, bus, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address;
+ int offset1;
+
+ bus = device->bus->number;
+ dev = PCI_SLOT(device->devfn);
+ func = PCI_FUNC(device->devfn);
+
+ /* XXX Need to change the Bus # */
+ if (bus > 2)
+ address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
+ 0x80000000 | 0x1;
+ else
+ address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
+
+ address_reg = RM9000x2_OCD_HTCFGA;
+ data_reg = RM9000x2_OCD_HTCFGD;
+
+ RM9K_WRITE(address_reg, address);
+
+ if ((offset & 0x3) == 0) {
+ offset1 = 0x3;
+ }
+ if ((offset & 0x3) == 1) {
+ offset1 = 0x2;
+ }
+ if ((offset & 0x3) == 2) {
+ offset1 = 0x1;
+ }
+ if ((offset & 0x3) == 3) {
+ offset1 = 0x0;
+ }
+
+ RM9K_WRITE_8(data_reg + offset1, val);
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+static void titan_pcibios_set_master(struct pci_dev *dev)
+{
+ u16 cmd;
+ int bus = dev->bus->number;
+
+ if (check_titan_htlink())
+ titan_ht_config_read_word(dev, PCI_COMMAND, &cmd);
+
+ cmd |= PCI_COMMAND_MASTER;
+
+ if (check_titan_htlink())
+ titan_ht_config_write_word(dev, PCI_COMMAND, cmd);
+}
+
+
+int pcibios_enable_resources(struct pci_dev *dev)
+{
+ u16 cmd, old_cmd;
+ u8 tmp1;
+ int idx;
+ struct resource *r;
+ int bus = dev->bus->number;
+
+ if (check_titan_htlink())
+ titan_ht_config_read_word(dev, PCI_COMMAND, &cmd);
+
+ old_cmd = cmd;
+ for (idx = 0; idx < 6; idx++) {
+ r = &dev->resource[idx];
+ if (!r->start && r->end) {
+ printk(KERN_ERR
+ "PCI: Device %s not available because of "
+ "resource collisions\n", pci_name(dev));
+ return -EINVAL;
+ }
+ if (r->flags & IORESOURCE_IO)
+ cmd |= PCI_COMMAND_IO;
+ if (r->flags & IORESOURCE_MEM)
+ cmd |= PCI_COMMAND_MEMORY;
+ }
+ if (cmd != old_cmd) {
+ if (check_titan_htlink())
+ titan_ht_config_write_word(dev, PCI_COMMAND, cmd);
+ }
+
+ if (check_titan_htlink())
+ titan_ht_config_read_byte(dev, PCI_CACHE_LINE_SIZE, &tmp1);
+
+ if (tmp1 != 8) {
+ printk(KERN_WARNING "PCI setting cache line size to 8 from "
+ "%d\n", tmp1);
+ }
+
+ if (check_titan_htlink())
+ titan_ht_config_write_byte(dev, PCI_CACHE_LINE_SIZE, 8);
+
+ if (check_titan_htlink())
+ titan_ht_config_read_byte(dev, PCI_LATENCY_TIMER, &tmp1);
+
+ if (tmp1 < 32 || tmp1 == 0xff) {
+ printk(KERN_WARNING "PCI setting latency timer to 32 from %d\n",
+ tmp1);
+ }
+
+ if (check_titan_htlink())
+ titan_ht_config_write_byte(dev, PCI_LATENCY_TIMER, 32);
+
+ return 0;
+}
+
+
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+ return pcibios_enable_resources(dev);
+}
+
+
+
+void pcibios_update_resource(struct pci_dev *dev, struct resource *root,
+ struct resource *res, int resource)
+{
+ u32 new, check;
+ int reg;
+
+ return;
+
+ new = res->start | (res->flags & PCI_REGION_FLAG_MASK);
+ if (resource < 6) {
+ reg = PCI_BASE_ADDRESS_0 + 4 * resource;
+ } else if (resource == PCI_ROM_RESOURCE) {
+ res->flags |= IORESOURCE_ROM_ENABLE;
+ reg = dev->rom_base_reg;
+ } else {
+ /*
+ * Somebody might have asked allocation of a non-standard
+ * resource
+ */
+ return;
+ }
+
+ pci_write_config_dword(dev, reg, new);
+ pci_read_config_dword(dev, reg, &check);
+ if ((new ^ check) &
+ ((new & PCI_BASE_ADDRESS_SPACE_IO) ? PCI_BASE_ADDRESS_IO_MASK :
+ PCI_BASE_ADDRESS_MEM_MASK)) {
+ printk(KERN_ERR "PCI: Error while updating region "
+ "%s/%d (%08x != %08x)\n", pci_name(dev), resource,
+ new, check);
+ }
+}
+
+
+void pcibios_align_resource(void *data, struct resource *res,
+ unsigned long size, unsigned long align)
+{
+ struct pci_dev *dev = data;
+
+ if (res->flags & IORESOURCE_IO) {
+ unsigned long start = res->start;
+
+ /* We need to avoid collisions with `mirrored' VGA ports
+ and other strange ISA hardware, so we always want the
+ addresses kilobyte aligned. */
+ if (size > 0x100) {
+ printk(KERN_ERR "PCI: I/O Region %s/%d too large"
+ " (%ld bytes)\n", pci_name(dev),
+ dev->resource - res, size);
+ }
+
+ start = (start + 1024 - 1) & ~(1024 - 1);
+ res->start = start;
+ }
+}
+
+struct pci_ops titan_pci_ops = {
+ titan_ht_config_read_byte,
+ titan_ht_config_read_word,
+ titan_ht_config_read_dword,
+ titan_ht_config_write_byte,
+ titan_ht_config_write_word,
+ titan_ht_config_write_dword
+};
+
+void __init pcibios_fixup_bus(struct pci_bus *c)
+{
+ titan_ht_pcibios_fixup_bus(c);
+}
+
+void __init pcibios_init(void)
+{
+
+ /* Reset PCI I/O and PCI MEM values */
+ /* XXX Need to add the proper values here */
+ ioport_resource.start = 0xe0000000;
+ ioport_resource.end = 0xe0000000 + 0x20000000 - 1;
+ iomem_resource.start = 0xc0000000;
+ iomem_resource.end = 0xc0000000 + 0x20000000 - 1;
+
+ /* XXX Need to add bus values */
+ pci_scan_bus(2, &titan_pci_ops, NULL);
+ pci_scan_bus(3, &titan_pci_ops, NULL);
+}
+
+/*
+ * for parsing "pci=" kernel boot arguments.
+ */
+char *pcibios_setup(char *str)
+{
+ printk(KERN_INFO "rr: pcibios_setup\n");
+ /* Nothing to do for now. */
+
+ return str;
+}
+
+unsigned __init int pcibios_assign_all_busses(void)
+{
+ /* We want to use the PCI bus detection done by PMON */
+ return 0;
+}
+
+#endif /* CONFIG_HYPERTRANSPORT */
diff --git a/arch/mips/pmc-sierra/yosemite/i2c-yosemite.c b/arch/mips/pmc-sierra/yosemite/i2c-yosemite.c
new file mode 100644
index 00000000000..416da22b3bf
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/i2c-yosemite.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2003 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Detailed Description:
+ *
+ * This block implements the I2C interface to the slave devices like the
+ * Atmel 24C32 EEPROM and the MAX 1619 Sensors device. The I2C Master interface
+ * can be controlled by the SCMB block. And the SCMB block kicks in only when
+ * using the Ethernet Mode of operation and __not__ the SysAD mode
+ *
+ * The SCMB controls the two modes: MDIO and the I2C. The MDIO mode is used to
+ * communicate with the Quad-PHY from Marvel. The I2C is used to communicate
+ * with the I2C slave devices. It seems that the driver does not explicitly
+ * deal with the control of SDA and SCL serial lines. So, the driver will set
+ * the slave address, drive the command and then the data. The SCMB will then
+ * control the two serial lines as required.
+ *
+ * It seems the documents are very unclear abt this. Hence, I took some time
+ * out to write the desciption to have an idea of how the I2C can actually
+ * work. Currently, this Linux driver wont be integrated into the generic Linux
+ * I2C framework. And finally, the I2C interface is also known as the 2BI
+ * interface. 2BI means 2-bit interface referring to SDA and SCL serial lines
+ * respectively.
+ *
+ * - Manish Lachwani (12/09/2003)
+ */
+
+#include "i2c-yosemite.h"
+
+/*
+ * Poll the I2C interface for the BUSY bit.
+ */
+static int titan_i2c_poll(void)
+{
+ int i = 0;
+ unsigned long val = 0;
+
+ for (i = 0; i < TITAN_I2C_MAX_POLL; i++) {
+ val = TITAN_I2C_READ(TITAN_I2C_COMMAND);
+
+ if (!(val & 0x8000))
+ return 0;
+ }
+
+ return TITAN_I2C_ERR_TIMEOUT;
+}
+
+/*
+ * Execute the I2C command
+ */
+int titan_i2c_xfer(unsigned int slave_addr, titan_i2c_command * cmd,
+ int size, unsigned int *addr)
+{
+ int loop = 0, bytes, i;
+ unsigned int *write_data, data, *read_data;
+ unsigned long reg_val, val;
+
+ write_data = cmd->data;
+ read_data = addr;
+
+ TITAN_I2C_WRITE(TITAN_I2C_SLAVE_ADDRESS, slave_addr);
+
+ if (cmd->type == TITAN_I2C_CMD_WRITE)
+ loop = cmd->write_size;
+ else
+ loop = size;
+
+ while (loop > 0) {
+ if ((cmd->type == TITAN_I2C_CMD_WRITE) ||
+ (cmd->type == TITAN_I2C_CMD_READ_WRITE)) {
+
+ reg_val = TITAN_I2C_DATA;
+ for (i = 0; i < TITAN_I2C_MAX_WORDS_PER_RW;
+ ++i, write_data += 2, reg_val += 4) {
+ if (bytes < cmd->write_size) {
+ data = write_data[0];
+ ++data;
+ }
+
+ if (bytes < cmd->write_size) {
+ data = write_data[1];
+ ++data;
+ }
+
+ TITAN_I2C_WRITE(reg_val, data);
+ }
+ }
+
+ TITAN_I2C_WRITE(TITAN_I2C_COMMAND,
+ (unsigned int) (cmd->type << 13));
+ if (titan_i2c_poll() != TITAN_I2C_ERR_OK)
+ return TITAN_I2C_ERR_TIMEOUT;
+
+ if ((cmd->type == TITAN_I2C_CMD_READ) ||
+ (cmd->type == TITAN_I2C_CMD_READ_WRITE)) {
+
+ reg_val = TITAN_I2C_DATA;
+ for (i = 0; i < TITAN_I2C_MAX_WORDS_PER_RW;
+ ++i, read_data += 2, reg_val += 4) {
+ data = TITAN_I2C_READ(reg_val);
+
+ if (bytes < size) {
+ read_data[0] = data & 0xff;
+ ++bytes;
+ }
+
+ if (bytes < size) {
+ read_data[1] =
+ ((data >> 8) & 0xff);
+ ++bytes;
+ }
+ }
+ }
+
+ loop -= (TITAN_I2C_MAX_WORDS_PER_RW * 2);
+ }
+
+ /*
+ * Read the Interrupt status and then return the appropriate error code
+ */
+
+ val = TITAN_I2C_READ(TITAN_I2C_INTERRUPTS);
+ if (val & 0x0020)
+ return TITAN_I2C_ERR_ARB_LOST;
+
+ if (val & 0x0040)
+ return TITAN_I2C_ERR_NO_RESP;
+
+ if (val & 0x0080)
+ return TITAN_I2C_ERR_DATA_COLLISION;
+
+ return TITAN_I2C_ERR_OK;
+}
+
+/*
+ * Init the I2C subsystem of the PMC-Sierra Yosemite board
+ */
+int titan_i2c_init(titan_i2c_config * config)
+{
+ unsigned int val;
+
+ /*
+ * Reset the SCMB and program into the I2C mode
+ */
+ TITAN_I2C_WRITE(TITAN_I2C_SCMB_CONTROL, 0xA000);
+ TITAN_I2C_WRITE(TITAN_I2C_SCMB_CONTROL, 0x2000);
+
+ /*
+ * Configure the filtera and clka values
+ */
+ val = TITAN_I2C_READ(TITAN_I2C_SCMB_CLOCK_A);
+ val |= ((val & ~(0xF000)) | ((config->filtera << 12) & 0xF000));
+ val |= ((val & ~(0x03FF)) | (config->clka & 0x03FF));
+ TITAN_I2C_WRITE(TITAN_I2C_SCMB_CLOCK_A, val);
+
+ /*
+ * Configure the filterb and clkb values
+ */
+ val = TITAN_I2C_READ(TITAN_I2C_SCMB_CLOCK_B);
+ val |= ((val & ~(0xF000)) | ((config->filterb << 12) & 0xF000));
+ val |= ((val & ~(0x03FF)) | (config->clkb & 0x03FF));
+ TITAN_I2C_WRITE(TITAN_I2C_SCMB_CLOCK_B, val);
+
+ return TITAN_I2C_ERR_OK;
+}
diff --git a/arch/mips/pmc-sierra/yosemite/i2c-yosemite.h b/arch/mips/pmc-sierra/yosemite/i2c-yosemite.h
new file mode 100644
index 00000000000..31c5523276f
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/i2c-yosemite.h
@@ -0,0 +1,96 @@
+/*
+ * arch/mips/pmc-sierra/yosemite/i2c-yosemite.h
+ *
+ * Copyright (C) 2003 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __I2C_YOSEMITE_H
+#define __I2C_YOSEMITE_H
+
+/* Read and Write operations to the chip */
+
+#define TITAN_I2C_BASE 0xbb000000 /* XXX Needs to change */
+
+#define TITAN_I2C_WRITE(offset, data) \
+ *(volatile unsigned long *)(TITAN_I2C_BASE + offset) = data
+
+#define TITAN_I2C_READ(offset) *(volatile unsigned long *)(TITAN_I2C_BASE + offset)
+
+
+/* Local constansts*/
+#define TITAN_I2C_MAX_FILTER 15
+#define TITAN_I2C_MAX_CLK 1023
+#define TITAN_I2C_MAX_ARBF 15
+#define TITAN_I2C_MAX_NAK 15
+#define TITAN_I2C_MAX_MASTERCODE 7
+#define TITAN_I2C_MAX_WORDS_PER_RW 4
+#define TITAN_I2C_MAX_POLL 100
+
+/* Registers used for I2C work */
+#define TITAN_I2C_SCMB_CONTROL 0x0180 /* SCMB Control */
+#define TITAN_I2C_SCMB_CLOCK_A 0x0184 /* SCMB Clock A */
+#define TITAN_I2C_SCMB_CLOCK_B 0x0188 /* SCMB Clock B */
+#define TITAN_I2C_CONFIG 0x01A0 /* I2C Config */
+#define TITAN_I2C_COMMAND 0x01A4 /* I2C Command */
+#define TITAN_I2C_SLAVE_ADDRESS 0x01A8 /* I2C Slave Address */
+#define TITAN_I2C_DATA 0x01AC /* I2C Data [15:0] */
+#define TITAN_I2C_INTERRUPTS 0x01BC /* I2C Interrupts */
+
+/* Error */
+#define TITAN_I2C_ERR_ARB_LOST (-9220)
+#define TITAN_I2C_ERR_NO_RESP (-9221)
+#define TITAN_I2C_ERR_DATA_COLLISION (-9222)
+#define TITAN_I2C_ERR_TIMEOUT (-9223)
+#define TITAN_I2C_ERR_OK 0
+
+/* I2C Command Type */
+typedef enum {
+ TITAN_I2C_CMD_WRITE = 0,
+ TITAN_I2C_CMD_READ = 1,
+ TITAN_I2C_CMD_READ_WRITE = 2
+} titan_i2c_cmd_type;
+
+/* I2C structures */
+typedef struct {
+ int filtera; /* Register 0x0184, bits 15 - 12 */
+ int clka; /* Register 0x0184, bits 9 - 0 */
+ int filterb; /* Register 0x0188, bits 15 - 12 */
+ int clkb; /* Register 0x0188, bits 9 - 0 */
+} titan_i2c_config;
+
+/* I2C command type */
+typedef struct {
+ titan_i2c_cmd_type type; /* Type of command */
+ int num_arb; /* Register 0x01a0, bits 15 - 12 */
+ int num_nak; /* Register 0x01a0, bits 11 - 8 */
+ int addr_size; /* Register 0x01a0, bit 7 */
+ int mst_code; /* Register 0x01a0, bits 6 - 4 */
+ int arb_en; /* Register 0x01a0, bit 1 */
+ int speed; /* Register 0x01a0, bit 0 */
+ int slave_addr; /* Register 0x01a8 */
+ int write_size; /* Register 0x01a4, bits 10 - 8 */
+ unsigned int *data; /* Register 0x01ac */
+} titan_i2c_command;
+
+#endif /* __I2C_YOSEMITE_H */
diff --git a/arch/mips/pmc-sierra/yosemite/irq-handler.S b/arch/mips/pmc-sierra/yosemite/irq-handler.S
new file mode 100644
index 00000000000..33b9c40d4f5
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/irq-handler.S
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2003, 04 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com
+ * Copyright 2004 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * First-level interrupt router for the PMC-Sierra Titan board
+ *
+ * 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.
+ *
+ * Titan supports Hypertransport or PCI but not both. Hence, one interrupt
+ * line is shared between the PCI slot A and Hypertransport. This is the
+ * Processor INTB #0.
+ */
+
+#include <linux/config.h>
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+ .align 5
+ NESTED(titan_handle_int, PT_SIZE, sp)
+ SAVE_ALL
+ CLI
+ .set at
+ .set noreorder
+ la ra, ret_from_irq
+ mfc0 t0, CP0_CAUSE
+ mfc0 t2, CP0_STATUS
+
+ and t0, t2
+
+ andi t2, t0, STATUSF_IP7 /* INTB5 hardware line */
+ bnez t2, ll_timer_irq /* Timer */
+ andi t1, t0, STATUSF_IP2 /* INTB0 hardware line */
+ bnez t1, ll_pcia_irq /* 64-bit PCI */
+ andi t2, t0, STATUSF_IP3 /* INTB1 hardware line */
+ bnez t2, ll_pcib_irq /* second 64-bit PCI slot */
+ andi t1, t0, STATUSF_IP4 /* INTB2 hardware line */
+ bnez t1, ll_duart_irq /* UART */
+ andi t2, t0, STATUSF_IP5 /* SMP inter-core interrupts */
+ bnez t2, ll_smp_irq
+ andi t1, t0, STATUSF_IP6
+ bnez t1, ll_ht_irq /* Hypertransport */
+
+ move a0, sp
+ j do_extended_irq
+ END(titan_handle_int)
+
+ .set reorder
+ .align 5
+
+ll_pcia_irq:
+ li a0, 2
+ move a1, sp
+#ifdef CONFIG_HYPERTRANSPORT
+ j ll_ht_smp_irq_handler
+#else
+ j do_IRQ
+#endif
+
+ll_pcib_irq:
+ li a0, 3
+ move a1, sp
+ j do_IRQ
+
+ll_duart_irq:
+ li a0, 4
+ move a1, sp
+ j do_IRQ
+
+ll_smp_irq:
+ li a0, 5
+ move a1, sp
+#ifdef CONFIG_SMP
+ j titan_mailbox_irq
+#else
+ j do_IRQ
+#endif
+
+ll_ht_irq:
+ li a0, 6
+ move a1, sp
+ j ll_ht_smp_irq_handler
+
+ll_timer_irq:
+ li a0, 7
+ move a1, sp
+ j do_IRQ
diff --git a/arch/mips/pmc-sierra/yosemite/irq.c b/arch/mips/pmc-sierra/yosemite/irq.c
new file mode 100644
index 00000000000..f4e2897d9bf
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/irq.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (C) 2003 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Second level Interrupt handlers for the PMC-Sierra Titan/Yosemite board
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/irq.h>
+#include <linux/timex.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/bitops.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/irq_cpu.h>
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+#include <asm/titan_dep.h>
+
+/* Hypertransport specific */
+#define IRQ_ACK_BITS 0x00000000 /* Ack bits */
+
+#define HYPERTRANSPORT_INTA 0x78 /* INTA# */
+#define HYPERTRANSPORT_INTB 0x79 /* INTB# */
+#define HYPERTRANSPORT_INTC 0x7a /* INTC# */
+#define HYPERTRANSPORT_INTD 0x7b /* INTD# */
+
+extern asmlinkage void titan_handle_int(void);
+extern void jaguar_mailbox_irq(struct pt_regs *);
+
+/*
+ * Handle hypertransport & SMP interrupts. The interrupt lines are scarce.
+ * For interprocessor interrupts, the best thing to do is to use the INTMSG
+ * register. We use the same external interrupt line, i.e. INTB3 and monitor
+ * another status bit
+ */
+asmlinkage void ll_ht_smp_irq_handler(int irq, struct pt_regs *regs)
+{
+ u32 status = OCD_READ(RM9000x2_OCD_INTP0STATUS4);
+
+ /* Ack all the bits that correspond to the interrupt sources */
+ if (status != 0)
+ OCD_WRITE(RM9000x2_OCD_INTP0STATUS4, IRQ_ACK_BITS);
+
+ status = OCD_READ(RM9000x2_OCD_INTP1STATUS4);
+ if (status != 0)
+ OCD_WRITE(RM9000x2_OCD_INTP1STATUS4, IRQ_ACK_BITS);
+
+#ifdef CONFIG_HT_LEVEL_TRIGGER
+ /*
+ * Level Trigger Mode only. Send the HT EOI message back to the source.
+ */
+ switch (status) {
+ case 0x1000000:
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTA);
+ break;
+ case 0x2000000:
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTB);
+ break;
+ case 0x4000000:
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTC);
+ break;
+ case 0x8000000:
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTD);
+ break;
+ case 0x0000001:
+ /* PLX */
+ OCD_WRITE(RM9000x2_OCD_HTEOI, 0x20);
+ OCD_WRITE(IRQ_CLEAR_REG, IRQ_ACK_BITS);
+ break;
+ case 0xf000000:
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTA);
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTB);
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTC);
+ OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTD);
+ break;
+ }
+#endif /* CONFIG_HT_LEVEL_TRIGGER */
+
+ do_IRQ(irq, regs);
+}
+
+asmlinkage void do_extended_irq(struct pt_regs *regs)
+{
+ unsigned int intcontrol = read_c0_intcontrol();
+ unsigned int cause = read_c0_cause();
+ unsigned int status = read_c0_status();
+ unsigned int pending_sr, pending_ic;
+
+ pending_sr = status & cause & 0xff00;
+ pending_ic = (cause >> 8) & intcontrol & 0xff00;
+
+ if (pending_ic & (1 << 13))
+ do_IRQ(13, regs);
+
+}
+
+#ifdef CONFIG_KGDB
+extern void init_second_port(void);
+#endif
+
+/*
+ * Initialize the next level interrupt handler
+ */
+void __init arch_init_irq(void)
+{
+ clear_c0_status(ST0_IM);
+
+ set_except_vector(0, titan_handle_int);
+ mips_cpu_irq_init(0);
+ rm7k_cpu_irq_init(8);
+ rm9k_cpu_irq_init(12);
+
+#ifdef CONFIG_KGDB
+ /* At this point, initialize the second serial port */
+ init_second_port();
+#endif
+
+#ifdef CONFIG_GDB_CONSOLE
+ register_gdb_console();
+#endif
+}
+
+#ifdef CONFIG_KGDB
+/*
+ * The 16550 DUART has two ports, but is allocated one IRQ
+ * for the serial console. Hence, a generic framework for
+ * serial IRQ routing in place. Currently, just calls the
+ * do_IRQ fuction. But, going in the future, need to check
+ * DUART registers for channel A and B, then decide the
+ * appropriate action
+ */
+asmlinkage void yosemite_kgdb_irq(int irq, struct pt_regs *regs)
+{
+ do_IRQ(irq, regs);
+}
+#endif
diff --git a/arch/mips/pmc-sierra/yosemite/prom.c b/arch/mips/pmc-sierra/yosemite/prom.c
new file mode 100644
index 00000000000..1fb3e697948
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/prom.c
@@ -0,0 +1,141 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 2003, 2004 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ * Copyright (C) 2004 Ralf Baechle
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/smp.h>
+
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+#include <asm/bootinfo.h>
+#include <asm/pmon.h>
+
+#ifdef CONFIG_SMP
+extern void prom_grab_secondary(void);
+#else
+#define prom_grab_secondary() do { } while (0)
+#endif
+
+#include "setup.h"
+
+struct callvectors *debug_vectors;
+
+extern unsigned long yosemite_base;
+extern unsigned long cpu_clock;
+
+const char *get_system_type(void)
+{
+ return "PMC-Sierra Yosemite";
+}
+
+static void prom_cpu0_exit(void *arg)
+{
+ void *nvram = (void *) YOSEMITE_RTC_BASE;
+
+ /* Ask the NVRAM/RTC/watchdog chip to assert reset in 1/16 second */
+ writeb(0x84, nvram + 0xff7);
+
+ /* wait for the watchdog to go off */
+ mdelay(100 + (1000 / 16));
+
+ /* if the watchdog fails for some reason, let people know */
+ printk(KERN_NOTICE "Watchdog reset failed\n");
+}
+
+/*
+ * Reset the NVRAM over the local bus
+ */
+static void prom_exit(void)
+{
+#ifdef CONFIG_SMP
+ if (smp_processor_id())
+ /* CPU 1 */
+ smp_call_function(prom_cpu0_exit, NULL, 1, 1);
+#endif
+ prom_cpu0_exit(NULL);
+}
+
+/*
+ * Halt the system
+ */
+static void prom_halt(void)
+{
+ printk(KERN_NOTICE "\n** You can safely turn off the power\n");
+ while (1)
+ __asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0");
+}
+
+/*
+ * Init routine which accepts the variables from PMON
+ */
+void __init prom_init(void)
+{
+ int argc = fw_arg0;
+ char **arg = (char **) fw_arg1;
+ char **env = (char **) fw_arg2;
+ struct callvectors *cv = (struct callvectors *) fw_arg3;
+ int i = 0;
+
+ /* Callbacks for halt, restart */
+ _machine_restart = (void (*)(char *)) prom_exit;
+ _machine_halt = prom_halt;
+ _machine_power_off = prom_halt;
+
+ debug_vectors = cv;
+ arcs_cmdline[0] = '\0';
+
+ /* Get the boot parameters */
+ for (i = 1; i < argc; i++) {
+ if (strlen(arcs_cmdline) + strlen(arg[i] + 1) >=
+ sizeof(arcs_cmdline))
+ break;
+
+ strcat(arcs_cmdline, arg[i]);
+ strcat(arcs_cmdline, " ");
+ }
+
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+ if ((strstr(arcs_cmdline, "console=ttyS")) == NULL)
+ strcat(arcs_cmdline, "console=ttyS0,115200");
+#endif
+
+ while (*env) {
+ if (strncmp("ocd_base", *env, strlen("ocd_base")) == 0)
+ yosemite_base =
+ simple_strtol(*env + strlen("ocd_base="), NULL,
+ 16);
+
+ if (strncmp("cpuclock", *env, strlen("cpuclock")) == 0)
+ cpu_clock =
+ simple_strtol(*env + strlen("cpuclock="), NULL,
+ 10);
+
+ env++;
+ }
+
+ mips_machgroup = MACH_GROUP_TITAN;
+ mips_machtype = MACH_TITAN_YOSEMITE;
+
+ prom_grab_secondary();
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
+{
+}
diff --git a/arch/mips/pmc-sierra/yosemite/py-console.c b/arch/mips/pmc-sierra/yosemite/py-console.c
new file mode 100644
index 00000000000..757e605693f
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/py-console.c
@@ -0,0 +1,114 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001, 2002, 2004 Ralf Baechle
+ */
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/termios.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <asm/serial.h>
+#include <asm/io.h>
+
+/* SUPERIO uart register map */
+struct yo_uartregs {
+ union {
+ volatile u8 rbr; /* read only, DLAB == 0 */
+ volatile u8 thr; /* write only, DLAB == 0 */
+ volatile u8 dll; /* DLAB == 1 */
+ } u1;
+ union {
+ volatile u8 ier; /* DLAB == 0 */
+ volatile u8 dlm; /* DLAB == 1 */
+ } u2;
+ union {
+ volatile u8 iir; /* read only */
+ volatile u8 fcr; /* write only */
+ } u3;
+ volatile u8 iu_lcr;
+ volatile u8 iu_mcr;
+ volatile u8 iu_lsr;
+ volatile u8 iu_msr;
+ volatile u8 iu_scr;
+} yo_uregs_t;
+
+#define iu_rbr u1.rbr
+#define iu_thr u1.thr
+#define iu_dll u1.dll
+#define iu_ier u2.ier
+#define iu_dlm u2.dlm
+#define iu_iir u3.iir
+#define iu_fcr u3.fcr
+
+#define ssnop() __asm__ __volatile__("sll $0, $0, 1\n");
+#define ssnop_4() do { ssnop(); ssnop(); ssnop(); ssnop(); } while (0)
+
+#define IO_BASE_64 0x9000000000000000ULL
+
+static unsigned char readb_outer_space(unsigned long long phys)
+{
+ unsigned long long vaddr = IO_BASE_64 | phys;
+ unsigned char res;
+ unsigned int sr;
+
+ sr = read_c0_status();
+ write_c0_status((sr | ST0_KX) & ~ ST0_IE);
+ ssnop_4();
+
+ __asm__ __volatile__ (
+ " .set mips3 \n"
+ " ld %0, %1 \n"
+ " lbu %0, (%0) \n"
+ " .set mips0 \n"
+ : "=r" (res)
+ : "m" (vaddr));
+
+ write_c0_status(sr);
+ ssnop_4();
+
+ return res;
+}
+
+static void writeb_outer_space(unsigned long long phys, unsigned char c)
+{
+ unsigned long long vaddr = IO_BASE_64 | phys;
+ unsigned long tmp;
+ unsigned int sr;
+
+ sr = read_c0_status();
+ write_c0_status((sr | ST0_KX) & ~ ST0_IE);
+ ssnop_4();
+
+ __asm__ __volatile__ (
+ " .set mips3 \n"
+ " ld %0, %1 \n"
+ " sb %2, (%0) \n"
+ " .set mips0 \n"
+ : "=&r" (tmp)
+ : "m" (vaddr), "r" (c));
+
+ write_c0_status(sr);
+ ssnop_4();
+}
+
+void prom_putchar(char c)
+{
+ unsigned long lsr = 0xfd000008ULL + offsetof(struct yo_uartregs, iu_lsr);
+ unsigned long thr = 0xfd000008ULL + offsetof(struct yo_uartregs, iu_thr);
+
+ while ((readb_outer_space(lsr) & 0x20) == 0);
+ writeb_outer_space(thr, c);
+}
+
+char __init prom_getchar(void)
+{
+ return 0;
+}
diff --git a/arch/mips/pmc-sierra/yosemite/setup.c b/arch/mips/pmc-sierra/yosemite/setup.c
new file mode 100644
index 00000000000..7225bbf20ce
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/setup.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) 2003 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/bcd.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/swap.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/timex.h>
+#include <linux/termios.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+
+#include <asm/time.h>
+#include <asm/bootinfo.h>
+#include <asm/page.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/processor.h>
+#include <asm/ptrace.h>
+#include <asm/reboot.h>
+#include <asm/serial.h>
+#include <asm/titan_dep.h>
+#include <asm/m48t37.h>
+
+#include "setup.h"
+
+unsigned char titan_ge_mac_addr_base[6] = {
+ // 0x00, 0x03, 0xcc, 0x1d, 0x22, 0x00
+ 0x00, 0xe0, 0x04, 0x00, 0x00, 0x21
+};
+
+unsigned long cpu_clock;
+unsigned long yosemite_base;
+
+static struct m48t37_rtc *m48t37_base;
+
+void __init bus_error_init(void)
+{
+ /* Do nothing */
+}
+
+
+unsigned long m48t37y_get_time(void)
+{
+ unsigned int year, month, day, hour, min, sec;
+
+ /* Stop the update to the time */
+ m48t37_base->control = 0x40;
+
+ year = BCD2BIN(m48t37_base->year);
+ year += BCD2BIN(m48t37_base->century) * 100;
+
+ month = BCD2BIN(m48t37_base->month);
+ day = BCD2BIN(m48t37_base->date);
+ hour = BCD2BIN(m48t37_base->hour);
+ min = BCD2BIN(m48t37_base->min);
+ sec = BCD2BIN(m48t37_base->sec);
+
+ /* Start the update to the time again */
+ m48t37_base->control = 0x00;
+
+ return mktime(year, month, day, hour, min, sec);
+}
+
+int m48t37y_set_time(unsigned long sec)
+{
+ struct rtc_time tm;
+
+ /* convert to a more useful format -- note months count from 0 */
+ to_tm(sec, &tm);
+ tm.tm_mon += 1;
+
+ /* enable writing */
+ m48t37_base->control = 0x80;
+
+ /* year */
+ m48t37_base->year = BIN2BCD(tm.tm_year % 100);
+ m48t37_base->century = BIN2BCD(tm.tm_year / 100);
+
+ /* month */
+ m48t37_base->month = BIN2BCD(tm.tm_mon);
+
+ /* day */
+ m48t37_base->date = BIN2BCD(tm.tm_mday);
+
+ /* hour/min/sec */
+ m48t37_base->hour = BIN2BCD(tm.tm_hour);
+ m48t37_base->min = BIN2BCD(tm.tm_min);
+ m48t37_base->sec = BIN2BCD(tm.tm_sec);
+
+ /* day of week -- not really used, but let's keep it up-to-date */
+ m48t37_base->day = BIN2BCD(tm.tm_wday + 1);
+
+ /* disable writing */
+ m48t37_base->control = 0x00;
+
+ return 0;
+}
+
+void yosemite_timer_setup(struct irqaction *irq)
+{
+ setup_irq(7, irq);
+}
+
+void yosemite_time_init(void)
+{
+ board_timer_setup = yosemite_timer_setup;
+ mips_hpt_frequency = cpu_clock / 2;
+mips_hpt_frequency = 33000000 * 3 * 5;
+}
+
+/* No other usable initialization hook than this ... */
+extern void (*late_time_init)(void);
+
+unsigned long ocd_base;
+
+EXPORT_SYMBOL(ocd_base);
+
+/*
+ * Common setup before any secondaries are started
+ */
+
+#define TITAN_UART_CLK 3686400
+#define TITAN_SERIAL_BASE_BAUD (TITAN_UART_CLK / 16)
+#define TITAN_SERIAL_IRQ 4
+#define TITAN_SERIAL_BASE 0xfd000008UL
+
+static void __init py_map_ocd(void)
+{
+ ocd_base = (unsigned long) ioremap(OCD_BASE, OCD_SIZE);
+ if (!ocd_base)
+ panic("Mapping OCD failed - game over. Your score is 0.");
+
+ /* Kludge for PMON bug ... */
+ OCD_WRITE(0x0710, 0x0ffff029);
+}
+
+static void __init py_uart_setup(void)
+{
+ struct uart_port up;
+
+ /*
+ * Register to interrupt zero because we share the interrupt with
+ * the serial driver which we don't properly support yet.
+ */
+ memset(&up, 0, sizeof(up));
+ up.membase = (unsigned char *) ioremap(TITAN_SERIAL_BASE, 8);
+ up.irq = TITAN_SERIAL_IRQ;
+ up.uartclk = TITAN_UART_CLK;
+ up.regshift = 0;
+ up.iotype = UPIO_MEM;
+ up.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+ up.line = 0;
+
+ if (early_serial_setup(&up))
+ printk(KERN_ERR "Early serial init of port 0 failed\n");
+}
+
+static void __init py_rtc_setup(void)
+{
+ m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE);
+ if (!m48t37_base)
+ printk(KERN_ERR "Mapping the RTC failed\n");
+
+ rtc_get_time = m48t37y_get_time;
+ rtc_set_time = m48t37y_set_time;
+
+ write_seqlock(&xtime_lock);
+ xtime.tv_sec = m48t37y_get_time();
+ xtime.tv_nsec = 0;
+
+ set_normalized_timespec(&wall_to_monotonic,
+ -xtime.tv_sec, -xtime.tv_nsec);
+ write_sequnlock(&xtime_lock);
+}
+
+/* Not only time init but that's what the hook it's called through is named */
+static void __init py_late_time_init(void)
+{
+ py_map_ocd();
+ py_uart_setup();
+ py_rtc_setup();
+}
+
+static int __init pmc_yosemite_setup(void)
+{
+ board_time_init = yosemite_time_init;
+ late_time_init = py_late_time_init;
+
+ /* Add memory regions */
+ add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM);
+
+#if 0 /* XXX Crash ... */
+ OCD_WRITE(RM9000x2_OCD_HTSC,
+ OCD_READ(RM9000x2_OCD_HTSC) | HYPERTRANSPORT_ENABLE);
+
+ /* Set the BAR. Shifted mode */
+ OCD_WRITE(RM9000x2_OCD_HTBAR0, HYPERTRANSPORT_BAR0_ADDR);
+ OCD_WRITE(RM9000x2_OCD_HTMASK0, HYPERTRANSPORT_SIZE0);
+#endif
+
+ return 0;
+}
+
+early_initcall(pmc_yosemite_setup);
diff --git a/arch/mips/pmc-sierra/yosemite/setup.h b/arch/mips/pmc-sierra/yosemite/setup.h
new file mode 100644
index 00000000000..1a01abfc7d3
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/setup.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2003, 04 PMC-Sierra
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ * Copyright 2004 Ralf Baechle <ralf@linux-mips.org>
+ *
+ * Board specific definititions for the PMC-Sierra Yosemite
+ *
+ * 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.
+ */
+#ifndef __SETUP_H__
+#define __SETUP_H__
+
+/* M48T37 RTC + NVRAM */
+#define YOSEMITE_RTC_BASE 0xfc800000
+#define YOSEMITE_RTC_SIZE 0x00800000
+
+#define HYPERTRANSPORT_BAR0_ADDR 0x00000006
+#define HYPERTRANSPORT_SIZE0 0x0fffffff
+#define HYPERTRANSPORT_BAR0_ATTR 0x00002000
+
+#define HYPERTRANSPORT_ENABLE 0x6
+
+/*
+ * EEPROM Size
+ */
+#define TITAN_ATMEL_24C32_SIZE 32768
+#define TITAN_ATMEL_24C64_SIZE 65536
+
+#endif /* __SETUP_H__ */
diff --git a/arch/mips/pmc-sierra/yosemite/smp.c b/arch/mips/pmc-sierra/yosemite/smp.c
new file mode 100644
index 00000000000..1d3b0734c78
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/smp.c
@@ -0,0 +1,172 @@
+#include <linux/linkage.h>
+#include <linux/sched.h>
+
+#include <asm/pmon.h>
+#include <asm/titan_dep.h>
+
+extern unsigned int (*mips_hpt_read)(void);
+extern void (*mips_hpt_init)(unsigned int);
+
+#define LAUNCHSTACK_SIZE 256
+
+static spinlock_t launch_lock __initdata;
+
+static unsigned long secondary_sp __initdata;
+static unsigned long secondary_gp __initdata;
+
+static unsigned char launchstack[LAUNCHSTACK_SIZE] __initdata
+ __attribute__((aligned(2 * sizeof(long))));
+
+static void __init prom_smp_bootstrap(void)
+{
+ local_irq_disable();
+
+ while (spin_is_locked(&launch_lock));
+
+ __asm__ __volatile__(
+ " move $sp, %0 \n"
+ " move $gp, %1 \n"
+ " j smp_bootstrap \n"
+ :
+ : "r" (secondary_sp), "r" (secondary_gp));
+}
+
+/*
+ * PMON is a fragile beast. It'll blow up once the mappings it's littering
+ * right into the middle of KSEG3 are blown away so we have to grab the slave
+ * core early and keep it in a waiting loop.
+ */
+void __init prom_grab_secondary(void)
+{
+ spin_lock(&launch_lock);
+
+ pmon_cpustart(1, &prom_smp_bootstrap,
+ launchstack + LAUNCHSTACK_SIZE, 0);
+}
+
+/*
+ * Detect available CPUs, populate phys_cpu_present_map before smp_init
+ *
+ * We don't want to start the secondary CPU yet nor do we have a nice probing
+ * feature in PMON so we just assume presence of the secondary core.
+ */
+static char maxcpus_string[] __initdata =
+ KERN_WARNING "max_cpus set to 0; using 1 instead\n";
+
+void __init prom_prepare_cpus(unsigned int max_cpus)
+{
+ int enabled = 0, i;
+
+ if (max_cpus == 0) {
+ printk(maxcpus_string);
+ max_cpus = 1;
+ }
+
+ cpus_clear(phys_cpu_present_map);
+
+ for (i = 0; i < 2; i++) {
+ if (i == max_cpus)
+ break;
+
+ /*
+ * The boot CPU
+ */
+ cpu_set(i, phys_cpu_present_map);
+ __cpu_number_map[i] = i;
+ __cpu_logical_map[i] = i;
+ enabled++;
+ }
+
+ /*
+ * Be paranoid. Enable the IPI only if we're really about to go SMP.
+ */
+ if (enabled > 1)
+ set_c0_status(STATUSF_IP5);
+}
+
+/*
+ * Firmware CPU startup hook
+ * Complicated by PMON's weird interface which tries to minimic the UNIX fork.
+ * It launches the next * available CPU and copies some information on the
+ * stack so the first thing we do is throw away that stuff and load useful
+ * values into the registers ...
+ */
+void prom_boot_secondary(int cpu, struct task_struct *idle)
+{
+ unsigned long gp = (unsigned long) idle->thread_info;
+ unsigned long sp = gp + THREAD_SIZE - 32;
+
+ secondary_sp = sp;
+ secondary_gp = gp;
+
+ spin_unlock(&launch_lock);
+}
+
+/* Hook for after all CPUs are online */
+void prom_cpus_done(void)
+{
+}
+
+/*
+ * After we've done initial boot, this function is called to allow the
+ * board code to clean up state, if needed
+ */
+void prom_init_secondary(void)
+{
+ mips_hpt_init(mips_hpt_read());
+
+ set_c0_status(ST0_CO | ST0_IE | ST0_IM);
+}
+
+void prom_smp_finish(void)
+{
+}
+
+asmlinkage void titan_mailbox_irq(struct pt_regs *regs)
+{
+ int cpu = smp_processor_id();
+ unsigned long status;
+
+ if (cpu == 0) {
+ status = OCD_READ(RM9000x2_OCD_INTP0STATUS3);
+ OCD_WRITE(RM9000x2_OCD_INTP0CLEAR3, status);
+ }
+
+ if (cpu == 1) {
+ status = OCD_READ(RM9000x2_OCD_INTP1STATUS3);
+ OCD_WRITE(RM9000x2_OCD_INTP1CLEAR3, status);
+ }
+
+ if (status & 0x2)
+ smp_call_function_interrupt();
+}
+
+/*
+ * Send inter-processor interrupt
+ */
+void core_send_ipi(int cpu, unsigned int action)
+{
+ /*
+ * Generate an INTMSG so that it can be sent over to the
+ * destination CPU. The INTMSG will put the STATUS bits
+ * based on the action desired. An alternative strategy
+ * is to write to the Interrupt Set register, read the
+ * Interrupt Status register and clear the Interrupt
+ * Clear register. The latter is preffered.
+ */
+ switch (action) {
+ case SMP_RESCHEDULE_YOURSELF:
+ if (cpu == 1)
+ OCD_WRITE(RM9000x2_OCD_INTP1SET3, 4);
+ else
+ OCD_WRITE(RM9000x2_OCD_INTP0SET3, 4);
+ break;
+
+ case SMP_CALL_FUNCTION:
+ if (cpu == 1)
+ OCD_WRITE(RM9000x2_OCD_INTP1SET3, 2);
+ else
+ OCD_WRITE(RM9000x2_OCD_INTP0SET3, 2);
+ break;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 21:04:00 +0000