MIPS: Add Cavium OCTEON processor support files to arch/mips/cavium-octeon.

These are the rest of the new files needed to add OCTEON processor
support to the Linux kernel.  Other than Makefile and Kconfig which
should be obvious, we have:

csrc-octeon.c   -- Clock source driver for OCTEON.
dma-octeon.c    -- Helper functions for mapping DMA memory.
flash_setup.c   -- Register on-board flash with the MTD subsystem.
octeon-irq.c    -- OCTEON interrupt controller managment.
octeon-memcpy.S -- Optimized memcpy() implementation.
serial.c        -- Register 8250 platform driver and early console.
setup.c         -- Early architecture initialization.
smp.c           -- OCTEON SMP support.
octeon_switch.S -- Scheduler context switch for OCTEON.
c-octeon.c      -- OCTEON cache controller support.
cex-oct.S       -- OCTEON cache exception handler.

asm/mach-cavium-octeon/*.h -- Architecture include files.

Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100644 arch/mips/cavium-octeon/Kconfig
 create mode 100644 arch/mips/cavium-octeon/Makefile
 create mode 100644 arch/mips/cavium-octeon/csrc-octeon.c
 create mode 100644 arch/mips/cavium-octeon/dma-octeon.c
 create mode 100644 arch/mips/cavium-octeon/flash_setup.c
 create mode 100644 arch/mips/cavium-octeon/octeon-irq.c
 create mode 100644 arch/mips/cavium-octeon/octeon-memcpy.S
 create mode 100644 arch/mips/cavium-octeon/serial.c
 create mode 100644 arch/mips/cavium-octeon/setup.c
 create mode 100644 arch/mips/cavium-octeon/smp.c
 create mode 100644 arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h
 create mode 100644 arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
 create mode 100644 arch/mips/include/asm/mach-cavium-octeon/irq.h
 create mode 100644 arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
 create mode 100644 arch/mips/include/asm/mach-cavium-octeon/war.h
 create mode 100644 arch/mips/include/asm/octeon/octeon.h
 create mode 100644 arch/mips/kernel/octeon_switch.S
 create mode 100644 arch/mips/mm/c-octeon.c
 create mode 100644 arch/mips/mm/cex-oct.S

1 files changed, 248 insertions, 0 deletions

diff --git a/arch/mips/include/asm/octeon/octeon.h b/arch/mips/include/asm/octeon/octeon.h
new file mode 100644
index 000000000000..edc676084cda
--- /dev/null
+++ b/arch/mips/include/asm/octeon/octeon.h
@@ -0,0 +1,248 @@
+/*
+ * 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) 2004-2008 Cavium Networks
+ */
+#ifndef __ASM_OCTEON_OCTEON_H
+#define __ASM_OCTEON_OCTEON_H
+
+#include "cvmx.h"
+
+extern uint64_t octeon_bootmem_alloc_range_phys(uint64_t size,
+						uint64_t alignment,
+						uint64_t min_addr,
+						uint64_t max_addr,
+						int do_locking);
+extern void *octeon_bootmem_alloc(uint64_t size, uint64_t alignment,
+				  int do_locking);
+extern void *octeon_bootmem_alloc_range(uint64_t size, uint64_t alignment,
+					uint64_t min_addr, uint64_t max_addr,
+					int do_locking);
+extern void *octeon_bootmem_alloc_named(uint64_t size, uint64_t alignment,
+					char *name);
+extern void *octeon_bootmem_alloc_named_range(uint64_t size, uint64_t min_addr,
+					      uint64_t max_addr, uint64_t align,
+					      char *name);
+extern void *octeon_bootmem_alloc_named_address(uint64_t size, uint64_t address,
+						char *name);
+extern int octeon_bootmem_free_named(char *name);
+extern void octeon_bootmem_lock(void);
+extern void octeon_bootmem_unlock(void);
+
+extern int octeon_is_simulation(void);
+extern int octeon_is_pci_host(void);
+extern int octeon_usb_is_ref_clk(void);
+extern uint64_t octeon_get_clock_rate(void);
+extern const char *octeon_board_type_string(void);
+extern const char *octeon_get_pci_interrupts(void);
+extern int octeon_get_southbridge_interrupt(void);
+extern int octeon_get_boot_coremask(void);
+extern int octeon_get_boot_num_arguments(void);
+extern const char *octeon_get_boot_argument(int arg);
+extern void octeon_hal_setup_reserved32(void);
+extern void octeon_user_io_init(void);
+struct octeon_cop2_state;
+extern unsigned long octeon_crypto_enable(struct octeon_cop2_state *state);
+extern void octeon_crypto_disable(struct octeon_cop2_state *state,
+				  unsigned long flags);
+
+extern void octeon_init_cvmcount(void);
+
+#define OCTEON_ARGV_MAX_ARGS	64
+#define OCTOEN_SERIAL_LEN	20
+
+struct octeon_boot_descriptor {
+	/* Start of block referenced by assembly code - do not change! */
+	uint32_t desc_version;
+	uint32_t desc_size;
+	uint64_t stack_top;
+	uint64_t heap_base;
+	uint64_t heap_end;
+	/* Only used by bootloader */
+	uint64_t entry_point;
+	uint64_t desc_vaddr;
+	/* End of This block referenced by assembly code - do not change! */
+	uint32_t exception_base_addr;
+	uint32_t stack_size;
+	uint32_t heap_size;
+	/* Argc count for application. */
+	uint32_t argc;
+	uint32_t argv[OCTEON_ARGV_MAX_ARGS];
+
+#define  BOOT_FLAG_INIT_CORE		(1 << 0)
+#define  OCTEON_BL_FLAG_DEBUG		(1 << 1)
+#define  OCTEON_BL_FLAG_NO_MAGIC	(1 << 2)
+	/* If set, use uart1 for console */
+#define  OCTEON_BL_FLAG_CONSOLE_UART1	(1 << 3)
+	/* If set, use PCI console */
+#define  OCTEON_BL_FLAG_CONSOLE_PCI	(1 << 4)
+	/* Call exit on break on serial port */
+#define  OCTEON_BL_FLAG_BREAK		(1 << 5)
+
+	uint32_t flags;
+	uint32_t core_mask;
+	/* DRAM size in megabyes. */
+	uint32_t dram_size;
+	/* physical address of free memory descriptor block. */
+	uint32_t phy_mem_desc_addr;
+	/* used to pass flags from app to debugger. */
+	uint32_t debugger_flags_base_addr;
+	/* CPU clock speed, in hz. */
+	uint32_t eclock_hz;
+	/* DRAM clock speed, in hz. */
+	uint32_t dclock_hz;
+	/* SPI4 clock in hz. */
+	uint32_t spi_clock_hz;
+	uint16_t board_type;
+	uint8_t board_rev_major;
+	uint8_t board_rev_minor;
+	uint16_t chip_type;
+	uint8_t chip_rev_major;
+	uint8_t chip_rev_minor;
+	char board_serial_number[OCTOEN_SERIAL_LEN];
+	uint8_t mac_addr_base[6];
+	uint8_t mac_addr_count;
+	uint64_t cvmx_desc_vaddr;
+};
+
+union octeon_cvmemctl {
+	uint64_t u64;
+	struct {
+		/* RO 1 = BIST fail, 0 = BIST pass */
+		uint64_t tlbbist:1;
+		/* RO 1 = BIST fail, 0 = BIST pass */
+		uint64_t l1cbist:1;
+		/* RO 1 = BIST fail, 0 = BIST pass */
+		uint64_t l1dbist:1;
+		/* RO 1 = BIST fail, 0 = BIST pass */
+		uint64_t dcmbist:1;
+		/* RO 1 = BIST fail, 0 = BIST pass */
+		uint64_t ptgbist:1;
+		/* RO 1 = BIST fail, 0 = BIST pass */
+		uint64_t wbfbist:1;
+		/* Reserved */
+		uint64_t reserved:22;
+		/* R/W If set, marked write-buffer entries time out
+		 * the same as as other entries; if clear, marked
+		 * write-buffer entries use the maximum timeout. */
+		uint64_t dismarkwblongto:1;
+		/* R/W If set, a merged store does not clear the
+		 * write-buffer entry timeout state. */
+		uint64_t dismrgclrwbto:1;
+		/* R/W Two bits that are the MSBs of the resultant
+		 * CVMSEG LM word location for an IOBDMA. The other 8
+		 * bits come from the SCRADDR field of the IOBDMA. */
+		uint64_t iobdmascrmsb:2;
+		/* R/W If set, SYNCWS and SYNCS only order marked
+		 * stores; if clear, SYNCWS and SYNCS only order
+		 * unmarked stores. SYNCWSMARKED has no effect when
+		 * DISSYNCWS is set. */
+		uint64_t syncwsmarked:1;
+		/* R/W If set, SYNCWS acts as SYNCW and SYNCS acts as
+		 * SYNC. */
+		uint64_t dissyncws:1;
+		/* R/W If set, no stall happens on write buffer
+		 * full. */
+		uint64_t diswbfst:1;
+		/* R/W If set (and SX set), supervisor-level
+		 * loads/stores can use XKPHYS addresses with
+		 * VA<48>==0 */
+		uint64_t xkmemenas:1;
+		/* R/W If set (and UX set), user-level loads/stores
+		 * can use XKPHYS addresses with VA<48>==0 */
+		uint64_t xkmemenau:1;
+		/* R/W If set (and SX set), supervisor-level
+		 * loads/stores can use XKPHYS addresses with
+		 * VA<48>==1 */
+		uint64_t xkioenas:1;
+		/* R/W If set (and UX set), user-level loads/stores
+		 * can use XKPHYS addresses with VA<48>==1 */
+		uint64_t xkioenau:1;
+		/* R/W If set, all stores act as SYNCW (NOMERGE must
+		 * be set when this is set) RW, reset to 0. */
+		uint64_t allsyncw:1;
+		/* R/W If set, no stores merge, and all stores reach
+		 * the coherent bus in order. */
+		uint64_t nomerge:1;
+		/* R/W Selects the bit in the counter used for DID
+		 * time-outs 0 = 231, 1 = 230, 2 = 229, 3 =
+		 * 214. Actual time-out is between 1x and 2x this
+		 * interval. For example, with DIDTTO=3, expiration
+		 * interval is between 16K and 32K. */
+		uint64_t didtto:2;
+		/* R/W If set, the (mem) CSR clock never turns off. */
+		uint64_t csrckalwys:1;
+		/* R/W If set, mclk never turns off. */
+		uint64_t mclkalwys:1;
+		/* R/W Selects the bit in the counter used for write
+		 * buffer flush time-outs (WBFLT+11) is the bit
+		 * position in an internal counter used to determine
+		 * expiration. The write buffer expires between 1x and
+		 * 2x this interval. For example, with WBFLT = 0, a
+		 * write buffer expires between 2K and 4K cycles after
+		 * the write buffer entry is allocated. */
+		uint64_t wbfltime:3;
+		/* R/W If set, do not put Istream in the L2 cache. */
+		uint64_t istrnol2:1;
+		/* R/W The write buffer threshold. */
+		uint64_t wbthresh:4;
+		/* Reserved */
+		uint64_t reserved2:2;
+		/* R/W If set, CVMSEG is available for loads/stores in
+		 * kernel/debug mode. */
+		uint64_t cvmsegenak:1;
+		/* R/W If set, CVMSEG is available for loads/stores in
+		 * supervisor mode. */
+		uint64_t cvmsegenas:1;
+		/* R/W If set, CVMSEG is available for loads/stores in
+		 * user mode. */
+		uint64_t cvmsegenau:1;
+		/* R/W Size of local memory in cache blocks, 54 (6912
+		 * bytes) is max legal value. */
+		uint64_t lmemsz:6;
+	} s;
+};
+
+struct octeon_cf_data {
+	unsigned long	base_region_bias;
+	unsigned int	base_region;	/* The chip select region used by CF */
+	int		is16bit;	/* 0 - 8bit, !0 - 16bit */
+	int		dma_engine;	/* -1 for no DMA */
+};
+
+extern void octeon_write_lcd(const char *s);
+extern void octeon_check_cpu_bist(void);
+extern int octeon_get_boot_debug_flag(void);
+extern int octeon_get_boot_uart(void);
+
+struct uart_port;
+extern unsigned int octeon_serial_in(struct uart_port *, int);
+extern void octeon_serial_out(struct uart_port *, int, int);
+
+/**
+ * Write a 32bit value to the Octeon NPI register space
+ *
+ * @address: Address to write to
+ * @val:     Value to write
+ */
+static inline void octeon_npi_write32(uint64_t address, uint32_t val)
+{
+	cvmx_write64_uint32(address ^ 4, val);
+	cvmx_read64_uint32(address ^ 4);
+}
+
+
+/**
+ * Read a 32bit value from the Octeon NPI register space
+ *
+ * @address: Address to read
+ * Returns The result
+ */
+static inline uint32_t octeon_npi_read32(uint64_t address)
+{
+	return cvmx_read64_uint32(address ^ 4);
+}
+
+#endif /* __ASM_OCTEON_OCTEON_H */