Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 417 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h b/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h
new file mode 100644
index 000000000..a4f798629
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h
@@ -0,0 +1,89 @@
+/*
+ * 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 Cavium Networks
+ */
+#ifndef __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H
+
+#include <linux/types.h>
+#include <asm/mipsregs.h>
+
+/*
+ * Cavium Octeons are MIPS64v2 processors
+ */
+#define cpu_dcache_line_size()	128
+#define cpu_icache_line_size()	128
+
+
+#define cpu_has_4kex		1
+#define cpu_has_3k_cache	0
+#define cpu_has_4k_cache	0
+#define cpu_has_tx39_cache	0
+#define cpu_has_counter		1
+#define cpu_has_watch		1
+#define cpu_has_divec		1
+#define cpu_has_vce		0
+#define cpu_has_cache_cdex_p	0
+#define cpu_has_cache_cdex_s	0
+#define cpu_has_prefetch	1
+
+#define cpu_has_llsc		1
+/*
+ * We Disable LL/SC on non SMP systems as it is faster to disable
+ * interrupts for atomic access than a LL/SC.
+ */
+#ifdef CONFIG_SMP
+# define kernel_uses_llsc	1
+#else
+# define kernel_uses_llsc	0
+#endif
+#define cpu_has_vtag_icache	1
+#define cpu_has_dc_aliases	0
+#define cpu_has_ic_fills_f_dc	0
+#define cpu_has_64bits		1
+#define cpu_has_octeon_cache	1
+#define cpu_has_saa		octeon_has_saa()
+#define cpu_has_mips32r1	1
+#define cpu_has_mips32r2	1
+#define cpu_has_mips64r1	1
+#define cpu_has_mips64r2	1
+#define cpu_has_dsp		0
+#define cpu_has_dsp2		0
+#define cpu_has_mipsmt		0
+#define cpu_has_vint		0
+#define cpu_has_veic		0
+#define cpu_hwrena_impl_bits	(MIPS_HWRENA_IMPL1 | MIPS_HWRENA_IMPL2)
+#define cpu_has_wsbh            1
+
+#define cpu_has_rixi		(cpu_data[0].cputype != CPU_CAVIUM_OCTEON)
+
+#define ARCH_HAS_IRQ_PER_CPU	1
+#define ARCH_HAS_SPINLOCK_PREFETCH 1
+#define spin_lock_prefetch(x) prefetch(x)
+#define PREFETCH_STRIDE 128
+
+#ifdef __OCTEON__
+/*
+ * All gcc versions that have OCTEON support define __OCTEON__ and have the
+ *  __builtin_popcount support.
+ */
+#define ARCH_HAS_USABLE_BUILTIN_POPCOUNT 1
+#endif
+
+static inline int octeon_has_saa(void)
+{
+	int id;
+	asm volatile ("mfc0 %0, $15,0" : "=r" (id));
+	return id >= 0x000d0300;
+}
+
+/*
+ * The last 256MB are reserved for device to device mappings and the
+ * BAR1 hole.
+ */
+#define MAX_DMA32_PFN (((1ULL << 32) - (1ULL << 28)) >> PAGE_SHIFT)
+
+#endif
diff --git a/arch/mips/include/asm/mach-cavium-octeon/irq.h b/arch/mips/include/asm/mach-cavium-octeon/irq.h
new file mode 100644
index 000000000..64b86b9d3
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/irq.h
@@ -0,0 +1,58 @@
+/*
+ * 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 __OCTEON_IRQ_H__
+#define __OCTEON_IRQ_H__
+
+#define NR_IRQS OCTEON_IRQ_LAST
+#define MIPS_CPU_IRQ_BASE OCTEON_IRQ_SW0
+
+enum octeon_irq {
+/* 1 - 8 represent the 8 MIPS standard interrupt sources */
+	OCTEON_IRQ_SW0 = 1,
+	OCTEON_IRQ_SW1,
+/* CIU0, CUI2, CIU4 are 3, 4, 5 */
+	OCTEON_IRQ_5 = 6,
+	OCTEON_IRQ_PERF,
+	OCTEON_IRQ_TIMER,
+/* sources in CIU_INTX_EN0 */
+	OCTEON_IRQ_WORKQ0,
+	OCTEON_IRQ_WDOG0 = OCTEON_IRQ_WORKQ0 + 64,
+	OCTEON_IRQ_MBOX0 = OCTEON_IRQ_WDOG0 + 32,
+	OCTEON_IRQ_MBOX1,
+	OCTEON_IRQ_MBOX2,
+	OCTEON_IRQ_MBOX3,
+	OCTEON_IRQ_PCI_INT0,
+	OCTEON_IRQ_PCI_INT1,
+	OCTEON_IRQ_PCI_INT2,
+	OCTEON_IRQ_PCI_INT3,
+	OCTEON_IRQ_PCI_MSI0,
+	OCTEON_IRQ_PCI_MSI1,
+	OCTEON_IRQ_PCI_MSI2,
+	OCTEON_IRQ_PCI_MSI3,
+
+	OCTEON_IRQ_TWSI,
+	OCTEON_IRQ_TWSI2,
+	OCTEON_IRQ_RML,
+	OCTEON_IRQ_TIMER0,
+	OCTEON_IRQ_TIMER1,
+	OCTEON_IRQ_TIMER2,
+	OCTEON_IRQ_TIMER3,
+#ifndef CONFIG_PCI_MSI
+	OCTEON_IRQ_LAST = 127
+#endif
+};
+
+#ifdef CONFIG_PCI_MSI
+/* 256 - 511 represent the MSI interrupts 0-255 */
+#define OCTEON_IRQ_MSI_BIT0	(256)
+
+#define OCTEON_IRQ_MSI_LAST	 (OCTEON_IRQ_MSI_BIT0 + 255)
+#define OCTEON_IRQ_LAST		 (OCTEON_IRQ_MSI_LAST + 1)
+#endif
+
+#endif
diff --git a/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
new file mode 100644
index 000000000..c38b38ce5
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
@@ -0,0 +1,160 @@
+/*
+ * 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) 2005-2008 Cavium Networks, Inc
+ */
+#ifndef __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H
+#define __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H
+
+#define CP0_CVMCTL_REG $9, 7
+#define CP0_CVMMEMCTL_REG $11,7
+#define CP0_PRID_REG $15, 0
+#define CP0_DCACHE_ERR_REG $27, 1
+#define CP0_PRID_OCTEON_PASS1 0x000d0000
+#define CP0_PRID_OCTEON_CN30XX 0x000d0200
+
+.macro	kernel_entry_setup
+	# Registers set by bootloader:
+	# (only 32 bits set by bootloader, all addresses are physical
+	# addresses, and need to have the appropriate memory region set
+	# by the kernel
+	# a0 = argc
+	# a1 = argv (kseg0 compat addr)
+	# a2 = 1 if init core, zero otherwise
+	# a3 = address of boot descriptor block
+	.set push
+	.set arch=octeon
+	# Read the cavium mem control register
+	dmfc0	v0, CP0_CVMMEMCTL_REG
+	# Clear the lower 6 bits, the CVMSEG size
+	dins	v0, $0, 0, 6
+	ori	v0, CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE
+	dmtc0	v0, CP0_CVMMEMCTL_REG	# Write the cavium mem control register
+	dmfc0	v0, CP0_CVMCTL_REG	# Read the cavium control register
+	# Disable unaligned load/store support but leave HW fixup enabled
+	# Needed for octeon specific memcpy
+	or  v0, v0, 0x5001
+	xor v0, v0, 0x1001
+	# First clear off CvmCtl[IPPCI] bit and move the performance
+	# counters interrupt to IRQ 6
+	dli	v1, ~(7 << 7)
+	and	v0, v0, v1
+	ori	v0, v0, (6 << 7)
+
+	mfc0	v1, CP0_PRID_REG
+	and	t1, v1, 0xfff8
+	xor	t1, t1, 0x9000		# 63-P1
+	beqz	t1, 4f
+	and	t1, v1, 0xfff8
+	xor	t1, t1, 0x9008		# 63-P2
+	beqz	t1, 4f
+	and	t1, v1, 0xfff8
+	xor	t1, t1, 0x9100		# 68-P1
+	beqz	t1, 4f
+	and	t1, v1, 0xff00
+	xor	t1, t1, 0x9200		# 66-PX
+	bnez	t1, 5f			# Skip WAR for others.
+	and	t1, v1, 0x00ff
+	slti	t1, t1, 2		# 66-P1.2 and later good.
+	beqz	t1, 5f
+
+4:	# core-16057 work around
+	or	v0, v0, 0x2000		# Set IPREF bit.
+
+5:	# No core-16057 work around
+	# Write the cavium control register
+	dmtc0	v0, CP0_CVMCTL_REG
+	sync
+	# Flush dcache after config change
+	cache	9, 0($0)
+	# Zero all of CVMSEG to make sure parity is correct
+	dli	v0, CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE
+	dsll	v0, 7
+	beqz	v0, 2f
+1:	dsubu	v0, 8
+	sd	$0, -32768(v0)
+	bnez	v0, 1b
+2:
+	mfc0	v0, CP0_PRID_REG
+	bbit0	v0, 15, 1f
+	# OCTEON II or better have bit 15 set.  Clear the error bits.
+	and	t1, v0, 0xff00
+	dli	v0, 0x9500
+	bge	t1, v0, 1f  # OCTEON III has no DCACHE_ERR_REG COP0
+	dli	v0, 0x27
+	dmtc0	v0, CP0_DCACHE_ERR_REG
+1:
+	# Get my core id
+	rdhwr	v0, $0
+	# Jump the master to kernel_entry
+	bne	a2, zero, octeon_main_processor
+	nop
+
+#ifdef CONFIG_SMP
+
+	#
+	# All cores other than the master need to wait here for SMP bootstrap
+	# to begin
+	#
+
+octeon_spin_wait_boot:
+#ifdef CONFIG_RELOCATABLE
+	PTR_LA	t0, octeon_processor_relocated_kernel_entry
+	LONG_L	t0, (t0)
+	beq	zero, t0, 1f
+	nop
+
+	jr	t0
+	nop
+1:
+#endif /* CONFIG_RELOCATABLE */
+
+	# This is the variable where the next core to boot is stored
+	PTR_LA	t0, octeon_processor_boot
+	# Get the core id of the next to be booted
+	LONG_L	t1, (t0)
+	# Keep looping if it isn't me
+	bne t1, v0, octeon_spin_wait_boot
+	nop
+	# Get my GP from the global variable
+	PTR_LA	t0, octeon_processor_gp
+	LONG_L	gp, (t0)
+	# Get my SP from the global variable
+	PTR_LA	t0, octeon_processor_sp
+	LONG_L	sp, (t0)
+	# Set the SP global variable to zero so the master knows we've started
+	LONG_S	zero, (t0)
+#ifdef __OCTEON__
+	syncw
+	syncw
+#else
+	sync
+#endif
+	# Jump to the normal Linux SMP entry point
+	j   smp_bootstrap
+	nop
+#else /* CONFIG_SMP */
+
+	#
+	# Someone tried to boot SMP with a non SMP kernel. All extra cores
+	# will halt here.
+	#
+octeon_wait_forever:
+	wait
+	b   octeon_wait_forever
+	nop
+
+#endif /* CONFIG_SMP */
+octeon_main_processor:
+	.set pop
+.endm
+
+/*
+ * Do SMP slave processor setup necessary before we can safely execute C code.
+ */
+	.macro	smp_slave_setup
+	.endm
+
+#endif /* __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H */
diff --git a/arch/mips/include/asm/mach-cavium-octeon/mangle-port.h b/arch/mips/include/asm/mach-cavium-octeon/mangle-port.h
new file mode 100644
index 000000000..8ff2cbdf2
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/mangle-port.h
@@ -0,0 +1,58 @@
+/*
+ * 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) 2003, 2004 Ralf Baechle
+ */
+#ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H
+#define __ASM_MACH_GENERIC_MANGLE_PORT_H
+
+#include <asm/byteorder.h>
+
+#ifdef __BIG_ENDIAN
+
+static inline bool __should_swizzle_bits(volatile void *a)
+{
+	extern const bool octeon_should_swizzle_table[];
+	u64 did = ((u64)(uintptr_t)a >> 40) & 0xff;
+
+	return octeon_should_swizzle_table[did];
+}
+
+# define __swizzle_addr_b(port)	(port)
+# define __swizzle_addr_w(port)	(port)
+# define __swizzle_addr_l(port)	(port)
+# define __swizzle_addr_q(port)	(port)
+
+#else /* __LITTLE_ENDIAN */
+
+#define __should_swizzle_bits(a)	false
+
+static inline bool __should_swizzle_addr(u64 p)
+{
+	/* boot bus? */
+	return ((p >> 40) & 0xff) == 0;
+}
+
+# define __swizzle_addr_b(port)	\
+	(__should_swizzle_addr(port) ? (port) ^ 7 : (port))
+# define __swizzle_addr_w(port)	\
+	(__should_swizzle_addr(port) ? (port) ^ 6 : (port))
+# define __swizzle_addr_l(port)	\
+	(__should_swizzle_addr(port) ? (port) ^ 4 : (port))
+# define __swizzle_addr_q(port)	(port)
+
+#endif /* __BIG_ENDIAN */
+
+
+# define ioswabb(a, x)		(x)
+# define __mem_ioswabb(a, x)	(x)
+# define ioswabw(a, x)		(__should_swizzle_bits(a) ? le16_to_cpu(x) : x)
+# define __mem_ioswabw(a, x)	(x)
+# define ioswabl(a, x)		(__should_swizzle_bits(a) ? le32_to_cpu(x) : x)
+# define __mem_ioswabl(a, x)	(x)
+# define ioswabq(a, x)		(__should_swizzle_bits(a) ? le64_to_cpu(x) : x)
+# define __mem_ioswabq(a, x)	(x)
+
+#endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */
diff --git a/arch/mips/include/asm/mach-cavium-octeon/spaces.h b/arch/mips/include/asm/mach-cavium-octeon/spaces.h
new file mode 100644
index 000000000..daa91accf
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/spaces.h
@@ -0,0 +1,24 @@
+/*
+ * 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) 2012 Cavium, Inc.
+ */
+#ifndef _ASM_MACH_CAVIUM_OCTEON_SPACES_H
+#define _ASM_MACH_CAVIUM_OCTEON_SPACES_H
+
+#include <linux/const.h>
+
+#ifdef CONFIG_64BIT
+/* They are all the same and some OCTEON II cores cannot handle 0xa8.. */
+#define CAC_BASE		_AC(0x8000000000000000, UL)
+#define UNCAC_BASE		_AC(0x8000000000000000, UL)
+#define IO_BASE			_AC(0x8000000000000000, UL)
+
+
+#endif /* CONFIG_64BIT */
+
+#include <asm/mach-generic/spaces.h>
+
+#endif /* _ASM_MACH_CAVIUM_OCTEON_SPACES_H */
diff --git a/arch/mips/include/asm/mach-cavium-octeon/war.h b/arch/mips/include/asm/mach-cavium-octeon/war.h
new file mode 100644
index 000000000..35c80be92
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/war.h
@@ -0,0 +1,28 @@
+/*
+ * 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) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2008 Cavium Networks <support@caviumnetworks.com>
+ */
+#ifndef __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H
+#define __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H
+
+#define R4600_V1_INDEX_ICACHEOP_WAR	0
+#define R4600_V1_HIT_CACHEOP_WAR	0
+#define R4600_V2_HIT_CACHEOP_WAR	0
+#define R5432_CP0_INTERRUPT_WAR		0
+#define BCM1250_M3_WAR			0
+#define SIBYTE_1956_WAR			0
+#define MIPS4K_ICACHE_REFILL_WAR	0
+#define MIPS_CACHE_SYNC_WAR		0
+#define TX49XX_ICACHE_INDEX_INV_WAR	0
+#define ICACHE_REFILLS_WORKAROUND_WAR	0
+#define R10000_LLSC_WAR			0
+#define MIPS34K_MISSED_ITLB_WAR		0
+
+#define CAVIUM_OCTEON_DCACHE_PREFETCH_WAR	\
+	OCTEON_IS_MODEL(OCTEON_CN6XXX)
+
+#endif /* __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H */