Merge tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver patch pull request for 5.1-rc1.

  The largest thing by far is the new habanalabs driver for their AI
  accelerator chip. For now it is in the drivers/misc directory but will
  probably move to a new directory soon along with other drivers of this
  type.

  Other than that, just the usual set of individual driver updates and
  fixes. There's an "odd" merge in here from the DRM tree that they
  asked me to do as the MEI driver is starting to interact with the i915
  driver, and it needed some coordination. All of those patches have
  been properly acked by the relevant subsystem maintainers.

  All of these have been in linux-next with no reported issues, most for
  quite some time"

* tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (219 commits)
  habanalabs: adjust Kconfig to fix build errors
  habanalabs: use %px instead of %p in error print
  habanalabs: use do_div for 64-bit divisions
  intel_th: gth: Fix an off-by-one in output unassigning
  habanalabs: fix little-endian<->cpu conversion warnings
  habanalabs: use NULL to initialize array of pointers
  habanalabs: fix little-endian<->cpu conversion warnings
  habanalabs: soft-reset device if context-switch fails
  habanalabs: print pointer using %p
  habanalabs: fix memory leak with CBs with unaligned size
  habanalabs: return correct error code on MMU mapping failure
  habanalabs: add comments in uapi/misc/habanalabs.h
  habanalabs: extend QMAN0 job timeout
  habanalabs: set DMA0 completion to SOB 1007
  habanalabs: fix validation of WREG32 to DMA completion
  habanalabs: fix mmu cache registers init
  habanalabs: disable CPU access on timeouts
  habanalabs: add MMU DRAM default page mapping
  habanalabs: Dissociate RAZWI info from event types
  misc/habanalabs: adjust Kconfig to fix build errors
  ...

13 files changed, 29 insertions, 218 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 375d0dc0dc7d..7deb3ea2dd3f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -179,6 +179,7 @@ config PPC
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_MMAP_RND_BITS
 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT
+	select HAVE_ARCH_NVRAM_OPS
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_CBPF_JIT			if !PPC64
@@ -275,11 +276,6 @@ config SYSVIPC_COMPAT
 	depends on COMPAT && SYSVIPC
 	default y
 
-# All PPC32s use generic nvram driver through ppc_md
-config GENERIC_NVRAM
-	bool
-	default y if PPC32
-
 config SCHED_OMIT_FRAME_POINTER
 	bool
 	default y
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 7f19fbd3ba55..4b73847e9b95 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -783,8 +783,10 @@ extern void __iounmap_at(void *ea, unsigned long size);
 
 #define mmio_read16be(addr)		readw_be(addr)
 #define mmio_read32be(addr)		readl_be(addr)
+#define mmio_read64be(addr)		readq_be(addr)
 #define mmio_write16be(val, addr)	writew_be(val, addr)
 #define mmio_write32be(val, addr)	writel_be(val, addr)
+#define mmio_write64be(val, addr)	writeq_be(val, addr)
 #define mmio_insb(addr, dst, count)	readsb(addr, dst, count)
 #define mmio_insw(addr, dst, count)	readsw(addr, dst, count)
 #define mmio_insl(addr, dst, count)	readsl(addr, dst, count)
diff --git a/arch/powerpc/include/asm/nvram.h b/arch/powerpc/include/asm/nvram.h
index 09a518bb7c03..629a5cdcc865 100644
--- a/arch/powerpc/include/asm/nvram.h
+++ b/arch/powerpc/include/asm/nvram.h
@@ -78,9 +78,6 @@ extern int	pmac_get_partition(int partition);
 extern u8	pmac_xpram_read(int xpaddr);
 extern void	pmac_xpram_write(int xpaddr, u8 data);
 
-/* Synchronize NVRAM */
-extern void	nvram_sync(void);
-
 /* Initialize NVRAM OS partition */
 extern int __init nvram_init_os_partition(struct nvram_os_partition *part);
 
@@ -98,10 +95,4 @@ extern int nvram_write_os_partition(struct nvram_os_partition *part,
 				    unsigned int err_type,
 				    unsigned int error_log_cnt);
 
-/* Determine NVRAM size */
-extern ssize_t nvram_get_size(void);
-
-/* Normal access to NVRAM */
-extern unsigned char nvram_read_byte(int i);
-extern void nvram_write_byte(unsigned char c, int i);
 #endif /* _ASM_POWERPC_NVRAM_H */
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 38b03a330cd2..244d2462e781 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -7,12 +7,6 @@
  *      2 of the License, or (at your option) any later version.
  *
  * /dev/nvram driver for PPC64
- *
- * This perhaps should live in drivers/char
- *
- * TODO: Split the /dev/nvram part (that one can use
- *       drivers/char/generic_nvram.c) from the arch & partition
- *       parsing code.
  */
 
 #include <linux/types.h>
@@ -714,137 +708,6 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
 	spin_unlock_irqrestore(&lock, flags);
 }
 
-static loff_t dev_nvram_llseek(struct file *file, loff_t offset, int origin)
-{
-	if (ppc_md.nvram_size == NULL)
-		return -ENODEV;
-	return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
-					ppc_md.nvram_size());
-}
-
-
-static ssize_t dev_nvram_read(struct file *file, char __user *buf,
-			  size_t count, loff_t *ppos)
-{
-	ssize_t ret;
-	char *tmp = NULL;
-	ssize_t size;
-
-	if (!ppc_md.nvram_size) {
-		ret = -ENODEV;
-		goto out;
-	}
-
-	size = ppc_md.nvram_size();
-	if (size < 0) {
-		ret = size;
-		goto out;
-	}
-
-	if (*ppos >= size) {
-		ret = 0;
-		goto out;
-	}
-
-	count = min_t(size_t, count, size - *ppos);
-	count = min(count, PAGE_SIZE);
-
-	tmp = kmalloc(count, GFP_KERNEL);
-	if (!tmp) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	ret = ppc_md.nvram_read(tmp, count, ppos);
-	if (ret <= 0)
-		goto out;
-
-	if (copy_to_user(buf, tmp, ret))
-		ret = -EFAULT;
-
-out:
-	kfree(tmp);
-	return ret;
-
-}
-
-static ssize_t dev_nvram_write(struct file *file, const char __user *buf,
-			  size_t count, loff_t *ppos)
-{
-	ssize_t ret;
-	char *tmp = NULL;
-	ssize_t size;
-
-	ret = -ENODEV;
-	if (!ppc_md.nvram_size)
-		goto out;
-
-	ret = 0;
-	size = ppc_md.nvram_size();
-	if (*ppos >= size || size < 0)
-		goto out;
-
-	count = min_t(size_t, count, size - *ppos);
-	count = min(count, PAGE_SIZE);
-
-	tmp = memdup_user(buf, count);
-	if (IS_ERR(tmp)) {
-		ret = PTR_ERR(tmp);
-		goto out;
-	}
-
-	ret = ppc_md.nvram_write(tmp, count, ppos);
-
-	kfree(tmp);
-out:
-	return ret;
-}
-
-static long dev_nvram_ioctl(struct file *file, unsigned int cmd,
-			    unsigned long arg)
-{
-	switch(cmd) {
-#ifdef CONFIG_PPC_PMAC
-	case OBSOLETE_PMAC_NVRAM_GET_OFFSET:
-		printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n");
-		/* fall through */
-	case IOC_NVRAM_GET_OFFSET: {
-		int part, offset;
-
-		if (!machine_is(powermac))
-			return -EINVAL;
-		if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0)
-			return -EFAULT;
-		if (part < pmac_nvram_OF || part > pmac_nvram_NR)
-			return -EINVAL;
-		offset = pmac_get_partition(part);
-		if (offset < 0)
-			return offset;
-		if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0)
-			return -EFAULT;
-		return 0;
-	}
-#endif /* CONFIG_PPC_PMAC */
-	default:
-		return -EINVAL;
-	}
-}
-
-static const struct file_operations nvram_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= dev_nvram_llseek,
-	.read		= dev_nvram_read,
-	.write		= dev_nvram_write,
-	.unlocked_ioctl	= dev_nvram_ioctl,
-};
-
-static struct miscdevice nvram_dev = {
-	NVRAM_MINOR,
-	"nvram",
-	&nvram_fops
-};
-
-
 #ifdef DEBUG_NVRAM
 static void __init nvram_print_partitions(char * label)
 {
@@ -992,6 +855,8 @@ loff_t __init nvram_create_partition(const char *name, int sig,
 	long size = 0;
 	int rc;
 
+	BUILD_BUG_ON(NVRAM_BLOCK_LEN != 16);
+
 	/* Convert sizes from bytes to blocks */
 	req_size = _ALIGN_UP(req_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
 	min_size = _ALIGN_UP(min_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
@@ -1192,22 +1057,3 @@ int __init nvram_scan_partitions(void)
 	kfree(header);
 	return err;
 }
-
-static int __init nvram_init(void)
-{
-	int rc;
-	
-	BUILD_BUG_ON(NVRAM_BLOCK_LEN != 16);
-
-	if (ppc_md.nvram_size == NULL || ppc_md.nvram_size() <= 0)
-		return  -ENODEV;
-
-  	rc = misc_register(&nvram_dev);
-	if (rc != 0) {
-		printk(KERN_ERR "nvram_init: failed to register device\n");
-		return rc;
-	}
-  	
-  	return rc;
-}
-device_initcall(nvram_init);
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 947f904688b0..c31082233a25 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -17,6 +17,7 @@
 #include <linux/console.h>
 #include <linux/memblock.h>
 #include <linux/export.h>
+#include <linux/nvram.h>
 
 #include <asm/io.h>
 #include <asm/prom.h>
@@ -147,41 +148,6 @@ static int __init ppc_setup_l3cr(char *str)
 }
 __setup("l3cr=", ppc_setup_l3cr);
 
-#ifdef CONFIG_GENERIC_NVRAM
-
-/* Generic nvram hooks used by drivers/char/gen_nvram.c */
-unsigned char nvram_read_byte(int addr)
-{
-	if (ppc_md.nvram_read_val)
-		return ppc_md.nvram_read_val(addr);
-	return 0xff;
-}
-EXPORT_SYMBOL(nvram_read_byte);
-
-void nvram_write_byte(unsigned char val, int addr)
-{
-	if (ppc_md.nvram_write_val)
-		ppc_md.nvram_write_val(addr, val);
-}
-EXPORT_SYMBOL(nvram_write_byte);
-
-ssize_t nvram_get_size(void)
-{
-	if (ppc_md.nvram_size)
-		return ppc_md.nvram_size();
-	return -1;
-}
-EXPORT_SYMBOL(nvram_get_size);
-
-void nvram_sync(void)
-{
-	if (ppc_md.nvram_sync)
-		ppc_md.nvram_sync();
-}
-EXPORT_SYMBOL(nvram_sync);
-
-#endif /* CONFIG_NVRAM */
-
 static int __init ppc_init(void)
 {
 	/* clear the progress line */
diff --git a/arch/powerpc/platforms/chrp/Makefile b/arch/powerpc/platforms/chrp/Makefile
index 4b3bfadc70fa..dc3465cc8bc6 100644
--- a/arch/powerpc/platforms/chrp/Makefile
+++ b/arch/powerpc/platforms/chrp/Makefile
@@ -1,3 +1,3 @@
 obj-y				+= setup.o time.o pegasos_eth.o pci.o
 obj-$(CONFIG_SMP)		+= smp.o
-obj-$(CONFIG_NVRAM)		+= nvram.o
+obj-$(CONFIG_NVRAM:m=y)		+= nvram.o
diff --git a/arch/powerpc/platforms/chrp/nvram.c b/arch/powerpc/platforms/chrp/nvram.c
index 791b86398e1d..37ac20ccbb19 100644
--- a/arch/powerpc/platforms/chrp/nvram.c
+++ b/arch/powerpc/platforms/chrp/nvram.c
@@ -24,7 +24,7 @@ static unsigned int nvram_size;
 static unsigned char nvram_buf[4];
 static DEFINE_SPINLOCK(nvram_lock);
 
-static unsigned char chrp_nvram_read(int addr)
+static unsigned char chrp_nvram_read_val(int addr)
 {
 	unsigned int done;
 	unsigned long flags;
@@ -46,7 +46,7 @@ static unsigned char chrp_nvram_read(int addr)
 	return ret;
 }
 
-static void chrp_nvram_write(int addr, unsigned char val)
+static void chrp_nvram_write_val(int addr, unsigned char val)
 {
 	unsigned int done;
 	unsigned long flags;
@@ -64,6 +64,11 @@ static void chrp_nvram_write(int addr, unsigned char val)
 	spin_unlock_irqrestore(&nvram_lock, flags);
 }
 
+static ssize_t chrp_nvram_size(void)
+{
+	return nvram_size;
+}
+
 void __init chrp_nvram_init(void)
 {
 	struct device_node *nvram;
@@ -85,8 +90,9 @@ void __init chrp_nvram_init(void)
 	printk(KERN_INFO "CHRP nvram contains %u bytes\n", nvram_size);
 	of_node_put(nvram);
 
-	ppc_md.nvram_read_val = chrp_nvram_read;
-	ppc_md.nvram_write_val = chrp_nvram_write;
+	ppc_md.nvram_read_val  = chrp_nvram_read_val;
+	ppc_md.nvram_write_val = chrp_nvram_write_val;
+	ppc_md.nvram_size      = chrp_nvram_size;
 
 	return;
 }
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 9438fa0fc355..fcf6f2342ef4 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -549,7 +549,7 @@ static void __init chrp_init_IRQ(void)
 static void __init
 chrp_init2(void)
 {
-#ifdef CONFIG_NVRAM
+#if IS_ENABLED(CONFIG_NVRAM)
 	chrp_nvram_init();
 #endif
 
diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile
index 923bfb340433..20ebf35d7913 100644
--- a/arch/powerpc/platforms/powermac/Makefile
+++ b/arch/powerpc/platforms/powermac/Makefile
@@ -15,7 +15,5 @@ obj-$(CONFIG_PMAC_BACKLIGHT)	+= backlight.o
 # need this to be a bool.  Cheat here and pretend CONFIG_NVRAM=m is really
 # CONFIG_NVRAM=y
 obj-$(CONFIG_NVRAM:m=y)		+= nvram.o
-# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
-obj-$(CONFIG_PPC64)		+= nvram.o
 obj-$(CONFIG_PPC32)		+= bootx_init.o
 obj-$(CONFIG_SMP)		+= smp.o
diff --git a/arch/powerpc/platforms/powermac/nvram.c b/arch/powerpc/platforms/powermac/nvram.c
index ae54d7fe68f3..9360cdc408c1 100644
--- a/arch/powerpc/platforms/powermac/nvram.c
+++ b/arch/powerpc/platforms/powermac/nvram.c
@@ -147,6 +147,11 @@ static ssize_t core99_nvram_size(void)
 static volatile unsigned char __iomem *nvram_addr;
 static int nvram_mult;
 
+static ssize_t ppc32_nvram_size(void)
+{
+	return NVRAM_SIZE;
+}
+
 static unsigned char direct_nvram_read_byte(int addr)
 {
 	return in_8(&nvram_data[(addr & (NVRAM_SIZE - 1)) * nvram_mult]);
@@ -590,21 +595,25 @@ int __init pmac_nvram_init(void)
 		nvram_mult = 1;
 		ppc_md.nvram_read_val	= direct_nvram_read_byte;
 		ppc_md.nvram_write_val	= direct_nvram_write_byte;
+		ppc_md.nvram_size	= ppc32_nvram_size;
 	} else if (nvram_naddrs == 1) {
 		nvram_data = ioremap(r1.start, s1);
 		nvram_mult = (s1 + NVRAM_SIZE - 1) / NVRAM_SIZE;
 		ppc_md.nvram_read_val	= direct_nvram_read_byte;
 		ppc_md.nvram_write_val	= direct_nvram_write_byte;
+		ppc_md.nvram_size	= ppc32_nvram_size;
 	} else if (nvram_naddrs == 2) {
 		nvram_addr = ioremap(r1.start, s1);
 		nvram_data = ioremap(r2.start, s2);
 		ppc_md.nvram_read_val	= indirect_nvram_read_byte;
 		ppc_md.nvram_write_val	= indirect_nvram_write_byte;
+		ppc_md.nvram_size	= ppc32_nvram_size;
 	} else if (nvram_naddrs == 0 && sys_ctrler == SYS_CTRLER_PMU) {
 #ifdef CONFIG_ADB_PMU
 		nvram_naddrs = -1;
 		ppc_md.nvram_read_val	= pmu_nvram_read_byte;
 		ppc_md.nvram_write_val	= pmu_nvram_write_byte;
+		ppc_md.nvram_size	= ppc32_nvram_size;
 #endif /* CONFIG_ADB_PMU */
 	} else {
 		printk(KERN_ERR "Incompatible type of NVRAM\n");
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 2e8221e20ee8..b7efcf336589 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -316,8 +316,7 @@ static void __init pmac_setup_arch(void)
 	find_via_pmu();
 	smu_init();
 
-#if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \
-    defined(CONFIG_PPC64)
+#if IS_ENABLED(CONFIG_NVRAM)
 	pmac_nvram_init();
 #endif
 #ifdef CONFIG_PPC32
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index f157e3d071f2..b36ddee17c87 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -68,7 +68,7 @@
 long __init pmac_time_init(void)
 {
 	s32 delta = 0;
-#ifdef CONFIG_NVRAM
+#if defined(CONFIG_NVRAM) && defined(CONFIG_PPC32)
 	int dst;
 	
 	delta = ((s32)pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x9)) << 16;
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 69cedc1b3b8a..1136a38ff039 100644
--- a/arch/powerpc/platforms/pseries/nvram.c
+++ b/arch/powerpc/platforms/pseries/nvram.c
@@ -7,8 +7,6 @@
  *      2 of the License, or (at your option) any later version.
  *
  * /dev/nvram driver for PPC64
- *
- * This perhaps should live in drivers/char
  */