Microblaze patches for 5.6-rc1

- Enable CMA - Add support for MB v11 - Defconfig updates - Minor fixes -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQQbPNTMvXmYlBPRwx7KSWXLKUoMIQUCXjlJ1gAKCRDKSWXLKUoM IWy9AJ4tauV9sUb+zNadrYxI+2zemRstUwCfQ49LG4kHpFCv8ldSTmhBPJY/3MI= =QpT4 -----END PGP SIGNATURE----- Merge tag 'microblaze-v5.6-rc1' of git://git.monstr.eu/linux-2.6-microblaze Pull Microblaze update from Michal Simek: - enable CMA - add support for MB v11 - defconfig updates - minor fixes * tag 'microblaze-v5.6-rc1' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Add ID for Microblaze v11 microblaze: Prevent the overflow of the start microblaze: Wire CMA allocator asm-generic: Make dma-contiguous.h a mandatory include/asm header microblaze: Sync defconfig with latest Kconfig layout microblaze: defconfig: Disable EXT2 driver and Enable EXT3 & EXT4 drivers microblaze: Align comments with register usage
2020-02-04 11:58:07 +00:00 · 2020-02-04 11:58:07 +00:00 · 153b5c566d
--- a/arch/arm64/include/asm/Kbuild
+++ b/arch/arm64/include/asm/Kbuild
@ -3,7 +3,6 @@ generic-y += bugs.h
 generic-y += delay.h
 generic-y += div64.h
 generic-y += dma.h
-generic-y += dma-contiguous.h
 generic-y += dma-mapping.h
 generic-y += early_ioremap.h
 generic-y += emergency-restart.h
--- a/arch/csky/include/asm/Kbuild
+++ b/arch/csky/include/asm/Kbuild
@ -7,7 +7,6 @@ generic-y += delay.h
 generic-y += device.h
 generic-y += div64.h
 generic-y += dma.h
-generic-y += dma-contiguous.h
 generic-y += dma-mapping.h
 generic-y += emergency-restart.h
 generic-y += exec.h
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@ -27,6 +27,7 @@ config MICROBLAZE
 	select HAVE_ARCH_HASH
 	select HAVE_ARCH_KGDB
 	select HAVE_DEBUG_KMEMLEAK
+	select HAVE_DMA_CONTIGUOUS
 	select HAVE_DYNAMIC_FTRACE
 	select HAVE_FTRACE_MCOUNT_RECORD
 	select HAVE_FUNCTION_GRAPH_TRACER
--- a/arch/microblaze/configs/mmu_defconfig
+++ b/arch/microblaze/configs/mmu_defconfig
@ -26,6 +26,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 CONFIG_PARTITION_ADVANCED=y
 # CONFIG_EFI_PARTITION is not set
+CONFIG_CMA=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
@ -73,7 +74,7 @@ CONFIG_FB_XILINX=y
 CONFIG_UIO=y
 CONFIG_UIO_PDRV_GENIRQ=y
 CONFIG_UIO_DMEM_GENIRQ=y
-CONFIG_EXT2_FS=y
+CONFIG_EXT3_FS=y
 # CONFIG_DNOTIFY is not set
 CONFIG_TMPFS=y
 CONFIG_CRAMFS=y
@ -82,10 +83,11 @@ CONFIG_NFS_FS=y
 CONFIG_CIFS=y
 CONFIG_CIFS_STATS2=y
 CONFIG_ENCRYPTED_KEYS=y
+CONFIG_DMA_CMA=y
 CONFIG_DEBUG_INFO=y
-CONFIG_DEBUG_SLAB=y
-CONFIG_DETECT_HUNG_TASK=y
-CONFIG_DEBUG_SPINLOCK=y
 CONFIG_KGDB=y
 CONFIG_KGDB_TESTS=y
 CONFIG_KGDB_KDB=y
+CONFIG_DEBUG_SLAB=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEBUG_SPINLOCK=y
--- a/arch/microblaze/configs/nommu_defconfig
+++ b/arch/microblaze/configs/nommu_defconfig
@ -70,7 +70,7 @@ CONFIG_XILINX_WATCHDOG=y
 CONFIG_FB=y
 CONFIG_FB_XILINX=y
 # CONFIG_USB_SUPPORT is not set
-CONFIG_EXT2_FS=y
+CONFIG_EXT3_FS=y
 # CONFIG_DNOTIFY is not set
 CONFIG_CRAMFS=y
 CONFIG_ROMFS_FS=y
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@ -92,7 +92,8 @@ static inline void __disable_dcache_nomsr(void)
 #define CACHE_LOOP_LIMITS(start, end, cache_line_length, cache_size)	\
 do {									\
 	int align = ~(cache_line_length - 1);				\
-	end = min(start + cache_size, end);				\
+	if (start <  UINT_MAX - cache_size)				\
+		end = min(start + cache_size, end);			\
 	start &= align;							\
 } while (0)

--- a/arch/microblaze/kernel/cpu/cpuinfo.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo.c
@ -51,6 +51,7 @@ const struct cpu_ver_key cpu_ver_lookup[] = {
 	{"9.5", 0x22},
 	{"9.6", 0x23},
 	{"10.0", 0x24},
+	{"11.0", 0x25},
 	{NULL, 0},
 };

--- a/arch/microblaze/kernel/head.S
+++ b/arch/microblaze/kernel/head.S
@ -121,10 +121,10 @@ no_fdt_arg:
 	tophys(r4,r4)			/* convert to phys address */
 	ori	r3, r0, COMMAND_LINE_SIZE - 1 /* number of loops */
 _copy_command_line:
-	/* r2=r5+r6 - r5 contain pointer to command line */
+	/* r2=r5+r11 - r5 contain pointer to command line */
 	lbu	r2, r5, r11
 	beqid	r2, skip		/* Skip if no data */
-	sb	r2, r4, r11		/* addr[r4+r6]= r2 */
+	sb	r2, r4, r11		/* addr[r4+r11]= r2 */
 	addik	r11, r11, 1		/* increment counting */
 	bgtid	r3, _copy_command_line	/* loop for all entries       */
 	addik	r3, r3, -1		/* decrement loop */
@ -139,8 +139,8 @@ skip:
 	ori	r4, r0, TOPHYS(_bram_load_start)	/* save bram context */
 	ori	r3, r0, (LMB_SIZE - 4)
 _copy_bram:
-	lw	r7, r0, r11		/* r7 = r0 + r6 */
-	sw	r7, r4, r11		/* addr[r4 + r6] = r7 */
+	lw	r7, r0, r11		/* r7 = r0 + r11 */
+	sw	r7, r4, r11		/* addr[r4 + r11] = r7 */
 	addik	r11, r11, 4		/* increment counting */
 	bgtid	r3, _copy_bram		/* loop for all entries */
 	addik	r3, r3, -4		/* descrement loop */
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@ -7,6 +7,7 @@
 * for more details.
 */

+#include <linux/dma-contiguous.h>
 #include <linux/memblock.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@ -345,6 +346,9 @@ asmlinkage void __init mmu_init(void)
 	/* This will also cause that unflatten device tree will be allocated
 	 * inside 768MB limit */
 	memblock_set_current_limit(memory_start + lowmem_size - 1);
+
+	/* CMA initialization */
+	dma_contiguous_reserve(memory_start + lowmem_size - 1);
 }

 /* This is only called until mem_init is done. */
--- a/arch/mips/include/asm/Kbuild
+++ b/arch/mips/include/asm/Kbuild
@ -6,7 +6,6 @@ generated-y += syscall_table_64_n64.h
 generated-y += syscall_table_64_o32.h
 generic-y += current.h
 generic-y += device.h
-generic-y += dma-contiguous.h
 generic-y += emergency-restart.h
 generic-y += export.h
 generic-y += irq_work.h
--- a/arch/riscv/include/asm/Kbuild
+++ b/arch/riscv/include/asm/Kbuild
@ -7,7 +7,6 @@ generic-y += div64.h
 generic-y += extable.h
 generic-y += flat.h
 generic-y += dma.h
-generic-y += dma-contiguous.h
 generic-y += dma-mapping.h
 generic-y += emergency-restart.h
 generic-y += exec.h
--- a/arch/s390/include/asm/Kbuild
+++ b/arch/s390/include/asm/Kbuild
@ -7,7 +7,6 @@ generated-y += unistd_nr.h
 generic-y += asm-offsets.h
 generic-y += cacheflush.h
 generic-y += device.h
-generic-y += dma-contiguous.h
 generic-y += dma-mapping.h
 generic-y += div64.h
 generic-y += emergency-restart.h
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@ -7,7 +7,6 @@ generated-y += unistd_32_ia32.h
 generated-y += unistd_64_x32.h
 generated-y += xen-hypercalls.h

-generic-y += dma-contiguous.h
 generic-y += early_ioremap.h
 generic-y += export.h
 generic-y += mcs_spinlock.h
--- a/arch/xtensa/include/asm/Kbuild
+++ b/arch/xtensa/include/asm/Kbuild
@ -4,7 +4,6 @@ generic-y += bug.h
 generic-y += compat.h
 generic-y += device.h
 generic-y += div64.h
-generic-y += dma-contiguous.h
 generic-y += dma-mapping.h
 generic-y += emergency-restart.h
 generic-y += exec.h
--- a/include/asm-generic/Kbuild
+++ b/include/asm-generic/Kbuild
@ -4,5 +4,6 @@
 # (This file is not included when SRCARCH=um since UML borrows several
 # asm headers from the host architecutre.)

+mandatory-y += dma-contiguous.h
 mandatory-y += msi.h
 mandatory-y += simd.h