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-rw-r--r--arch/cris/Kconfig4
-rw-r--r--arch/cris/arch-v10/drivers/gpio.c8
-rw-r--r--arch/cris/arch-v10/drivers/sync_serial.c16
-rw-r--r--arch/cris/arch-v32/drivers/cryptocop.c23
-rw-r--r--arch/cris/arch-v32/drivers/pci/Makefile2
-rw-r--r--arch/cris/arch-v32/drivers/pci/dma.c80
-rw-r--r--arch/cris/arch-v32/drivers/sync_serial.c18
-rw-r--r--arch/cris/include/arch-v10/arch/bug.h11
-rw-r--r--arch/cris/include/asm/Kbuild2
-rw-r--r--arch/cris/include/asm/dma-mapping.h20
-rw-r--r--arch/cris/include/asm/processor.h9
-rw-r--r--arch/cris/include/asm/thread_info.h9
-rw-r--r--arch/cris/kernel/Makefile14
-rw-r--r--arch/cris/kernel/devicetree.c15
-rw-r--r--arch/cris/kernel/setup.c2
-rw-r--r--arch/cris/kernel/vmlinux.lds.S1
16 files changed, 58 insertions, 176 deletions
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index 54d3f426763b..cd5a0865c97f 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -33,6 +33,9 @@ config GENERIC_CALIBRATE_DELAY
config NO_IOPORT_MAP
def_bool y if !PCI
+config NO_DMA
+ def_bool y if !PCI
+
config FORCE_MAX_ZONEORDER
int
default 6
@@ -72,6 +75,7 @@ config CRIS
select GENERIC_SCHED_CLOCK if ETRAX_ARCH_V32
select HAVE_DEBUG_BUGVERBOSE if ETRAX_ARCH_V32
select HAVE_NMI
+ select DMA_DIRECT_OPS if PCI
config HZ
int
diff --git a/arch/cris/arch-v10/drivers/gpio.c b/arch/cris/arch-v10/drivers/gpio.c
index 68dbe261dc57..cd0e05d89d42 100644
--- a/arch/cris/arch-v10/drivers/gpio.c
+++ b/arch/cris/arch-v10/drivers/gpio.c
@@ -50,7 +50,7 @@ static ssize_t gpio_write(struct file *file, const char __user *buf,
size_t count, loff_t *off);
static int gpio_open(struct inode *inode, struct file *filp);
static int gpio_release(struct inode *inode, struct file *filp);
-static unsigned int gpio_poll(struct file *filp, struct poll_table_struct *wait);
+static __poll_t gpio_poll(struct file *filp, struct poll_table_struct *wait);
/* private data per open() of this driver */
@@ -141,9 +141,9 @@ static unsigned long dir_g_shadow; /* 1=output */
#define USE_PORTS(priv) ((priv)->minor <= GPIO_MINOR_B)
-static unsigned int gpio_poll(struct file *file, poll_table *wait)
+static __poll_t gpio_poll(struct file *file, poll_table *wait)
{
- unsigned int mask = 0;
+ __poll_t mask = 0;
struct gpio_private *priv = file->private_data;
unsigned long data;
unsigned long flags;
@@ -173,7 +173,7 @@ static unsigned int gpio_poll(struct file *file, poll_table *wait)
if ((data & priv->highalarm) ||
(~data & priv->lowalarm)) {
- mask = POLLIN|POLLRDNORM;
+ mask = EPOLLIN|EPOLLRDNORM;
}
out:
diff --git a/arch/cris/arch-v10/drivers/sync_serial.c b/arch/cris/arch-v10/drivers/sync_serial.c
index cfe9176f2205..ed1a568a7217 100644
--- a/arch/cris/arch-v10/drivers/sync_serial.c
+++ b/arch/cris/arch-v10/drivers/sync_serial.c
@@ -157,7 +157,7 @@ static inline int sync_data_avail(struct sync_port *port);
static int sync_serial_open(struct inode *inode, struct file *file);
static int sync_serial_release(struct inode *inode, struct file *file);
-static unsigned int sync_serial_poll(struct file *filp, poll_table *wait);
+static __poll_t sync_serial_poll(struct file *filp, poll_table *wait);
static long sync_serial_ioctl(struct file *file,
unsigned int cmd, unsigned long arg);
@@ -654,28 +654,28 @@ static int sync_serial_release(struct inode *inode, struct file *file)
-static unsigned int sync_serial_poll(struct file *file, poll_table *wait)
+static __poll_t sync_serial_poll(struct file *file, poll_table *wait)
{
int dev = MINOR(file_inode(file)->i_rdev);
- unsigned int mask = 0;
+ __poll_t mask = 0;
struct sync_port *port;
- DEBUGPOLL(static unsigned int prev_mask = 0);
+ DEBUGPOLL(static __poll_t prev_mask = 0);
port = &ports[dev];
poll_wait(file, &port->out_wait_q, wait);
poll_wait(file, &port->in_wait_q, wait);
/* Some room to write */
if (port->out_count < OUT_BUFFER_SIZE)
- mask |= POLLOUT | POLLWRNORM;
+ mask |= EPOLLOUT | EPOLLWRNORM;
/* At least an inbufchunk of data */
if (sync_data_avail(port) >= port->inbufchunk)
- mask |= POLLIN | POLLRDNORM;
+ mask |= EPOLLIN | EPOLLRDNORM;
DEBUGPOLL(if (mask != prev_mask)
printk(KERN_DEBUG "sync_serial_poll: mask 0x%08X %s %s\n",
mask,
- mask & POLLOUT ? "POLLOUT" : "",
- mask & POLLIN ? "POLLIN" : "");
+ mask & EPOLLOUT ? "POLLOUT" : "",
+ mask & EPOLLIN ? "POLLIN" : "");
prev_mask = mask;
);
return mask;
diff --git a/arch/cris/arch-v32/drivers/cryptocop.c b/arch/cris/arch-v32/drivers/cryptocop.c
index d688fe117dca..a3c353472a8c 100644
--- a/arch/cris/arch-v32/drivers/cryptocop.c
+++ b/arch/cris/arch-v32/drivers/cryptocop.c
@@ -2717,37 +2717,28 @@ static int cryptocop_ioctl_process(struct inode *inode, struct file *filp, unsig
}
}
- /* Acquire the mm page semaphore. */
- down_read(&current->mm->mmap_sem);
-
- err = get_user_pages((unsigned long int)(oper.indata + prev_ix),
+ err = get_user_pages_fast((unsigned long)(oper.indata + prev_ix),
noinpages,
- 0, /* read access only for in data */
- inpages,
- NULL);
+ false, /* read access only for in data */
+ inpages);
if (err < 0) {
- up_read(&current->mm->mmap_sem);
nooutpages = noinpages = 0;
DEBUG_API(printk("cryptocop_ioctl_process: get_user_pages indata\n"));
goto error_cleanup;
}
noinpages = err;
- if (oper.do_cipher){
- err = get_user_pages((unsigned long int)oper.cipher_outdata,
+ if (oper.do_cipher) {
+ err = get_user_pages_fast((unsigned long)oper.cipher_outdata,
nooutpages,
- FOLL_WRITE, /* write access for out data */
- outpages,
- NULL);
- up_read(&current->mm->mmap_sem);
+ true, /* write access for out data */
+ outpages);
if (err < 0) {
nooutpages = 0;
DEBUG_API(printk("cryptocop_ioctl_process: get_user_pages outdata\n"));
goto error_cleanup;
}
nooutpages = err;
- } else {
- up_read(&current->mm->mmap_sem);
}
/* Add 6 to nooutpages to make room for possibly inserted buffers for storing digest and
diff --git a/arch/cris/arch-v32/drivers/pci/Makefile b/arch/cris/arch-v32/drivers/pci/Makefile
index bff7482f2444..93c8be6170b1 100644
--- a/arch/cris/arch-v32/drivers/pci/Makefile
+++ b/arch/cris/arch-v32/drivers/pci/Makefile
@@ -2,4 +2,4 @@
# Makefile for Etrax cardbus driver
#
-obj-$(CONFIG_ETRAX_CARDBUS) += bios.o dma.o
+obj-$(CONFIG_ETRAX_CARDBUS) += bios.o
diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c
deleted file mode 100644
index dbbd3816cc0b..000000000000
--- a/arch/cris/arch-v32/drivers/pci/dma.c
+++ /dev/null
@@ -1,80 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Dynamic DMA mapping support.
- *
- * On cris there is no hardware dynamic DMA address translation,
- * so consistent alloc/free are merely page allocation/freeing.
- * The rest of the dynamic DMA mapping interface is implemented
- * in asm/pci.h.
- *
- * Borrowed from i386.
- */
-
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/gfp.h>
-#include <asm/io.h>
-
-static void *v32_dma_alloc(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
-{
- void *ret;
-
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
-
- ret = (void *)__get_free_pages(gfp, get_order(size));
-
- if (ret != NULL) {
- memset(ret, 0, size);
- *dma_handle = virt_to_phys(ret);
- }
- return ret;
-}
-
-static void v32_dma_free(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle, unsigned long attrs)
-{
- free_pages((unsigned long)vaddr, get_order(size));
-}
-
-static inline dma_addr_t v32_dma_map_page(struct device *dev,
- struct page *page, unsigned long offset, size_t size,
- enum dma_data_direction direction, unsigned long attrs)
-{
- return page_to_phys(page) + offset;
-}
-
-static inline int v32_dma_map_sg(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction direction,
- unsigned long attrs)
-{
- printk("Map sg\n");
- return nents;
-}
-
-static inline int v32_dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if (mask < 0x00ffffff)
- return 0;
- return 1;
-}
-
-const struct dma_map_ops v32_dma_ops = {
- .alloc = v32_dma_alloc,
- .free = v32_dma_free,
- .map_page = v32_dma_map_page,
- .map_sg = v32_dma_map_sg,
- .dma_supported = v32_dma_supported,
-};
-EXPORT_SYMBOL(v32_dma_ops);
diff --git a/arch/cris/arch-v32/drivers/sync_serial.c b/arch/cris/arch-v32/drivers/sync_serial.c
index 8efcc1a899a8..1b0ce8a8af16 100644
--- a/arch/cris/arch-v32/drivers/sync_serial.c
+++ b/arch/cris/arch-v32/drivers/sync_serial.c
@@ -178,7 +178,7 @@ static inline int sync_data_avail(struct sync_port *port);
static int sync_serial_open(struct inode *, struct file *);
static int sync_serial_release(struct inode *, struct file *);
-static unsigned int sync_serial_poll(struct file *filp, poll_table *wait);
+static __poll_t sync_serial_poll(struct file *filp, poll_table *wait);
static long sync_serial_ioctl(struct file *file,
unsigned int cmd, unsigned long arg);
@@ -555,13 +555,13 @@ static int sync_serial_release(struct inode *inode, struct file *file)
return 0;
}
-static unsigned int sync_serial_poll(struct file *file, poll_table *wait)
+static __poll_t sync_serial_poll(struct file *file, poll_table *wait)
{
int dev = iminor(file_inode(file));
- unsigned int mask = 0;
+ __poll_t mask = 0;
struct sync_port *port;
DEBUGPOLL(
- static unsigned int prev_mask;
+ static __poll_t prev_mask;
);
port = &ports[dev];
@@ -574,24 +574,24 @@ static unsigned int sync_serial_poll(struct file *file, poll_table *wait)
/* No active transfer, descriptors are available */
if (port->output && !port->tr_running)
- mask |= POLLOUT | POLLWRNORM;
+ mask |= EPOLLOUT | EPOLLWRNORM;
/* Descriptor and buffer space available. */
if (port->output &&
port->active_tr_descr != port->catch_tr_descr &&
port->out_buf_count < OUT_BUFFER_SIZE)
- mask |= POLLOUT | POLLWRNORM;
+ mask |= EPOLLOUT | EPOLLWRNORM;
/* At least an inbufchunk of data */
if (port->input && sync_data_avail(port) >= port->inbufchunk)
- mask |= POLLIN | POLLRDNORM;
+ mask |= EPOLLIN | EPOLLRDNORM;
DEBUGPOLL(
if (mask != prev_mask)
pr_info("sync_serial_poll: mask 0x%08X %s %s\n",
mask,
- mask & POLLOUT ? "POLLOUT" : "",
- mask & POLLIN ? "POLLIN" : "");
+ mask & EPOLLOUT ? "POLLOUT" : "",
+ mask & EPOLLIN ? "POLLIN" : "");
prev_mask = mask;
);
return mask;
diff --git a/arch/cris/include/arch-v10/arch/bug.h b/arch/cris/include/arch-v10/arch/bug.h
index 905afeacfedf..06da9d49152a 100644
--- a/arch/cris/include/arch-v10/arch/bug.h
+++ b/arch/cris/include/arch-v10/arch/bug.h
@@ -44,18 +44,25 @@ struct bug_frame {
* not be used like this with newer versions of gcc.
*/
#define BUG() \
+do { \
__asm__ __volatile__ ("clear.d [" __stringify(BUG_MAGIC) "]\n\t"\
"movu.w " __stringify(__LINE__) ",$r0\n\t"\
"jump 0f\n\t" \
".section .rodata\n" \
"0:\t.string \"" __FILE__ "\"\n\t" \
- ".previous")
+ ".previous"); \
+ unreachable(); \
+} while (0)
#endif
#else
/* This just causes an oops. */
-#define BUG() (*(int *)0 = 0)
+#define BUG() \
+do { \
+ barrier_before_unreachable(); \
+ __builtin_trap(); \
+} while (0)
#endif
diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild
index 460349cb147f..6a547fe8752b 100644
--- a/arch/cris/include/asm/Kbuild
+++ b/arch/cris/include/asm/Kbuild
@@ -1,10 +1,10 @@
generic-y += atomic.h
generic-y += barrier.h
-generic-y += clkdev.h
generic-y += cmpxchg.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h
+generic-y += dma-mapping.h
generic-y += emergency-restart.h
generic-y += exec.h
generic-y += extable.h
diff --git a/arch/cris/include/asm/dma-mapping.h b/arch/cris/include/asm/dma-mapping.h
deleted file mode 100644
index 1553bdb30a0c..000000000000
--- a/arch/cris/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_CRIS_DMA_MAPPING_H
-#define _ASM_CRIS_DMA_MAPPING_H
-
-#ifdef CONFIG_PCI
-extern const struct dma_map_ops v32_dma_ops;
-
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
- return &v32_dma_ops;
-}
-#else
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
- BUG();
- return NULL;
-}
-#endif
-
-#endif
diff --git a/arch/cris/include/asm/processor.h b/arch/cris/include/asm/processor.h
index 124dd5ec7f65..ee4d8b03d048 100644
--- a/arch/cris/include/asm/processor.h
+++ b/arch/cris/include/asm/processor.h
@@ -26,13 +26,6 @@ struct task_struct;
*/
#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
-/* THREAD_SIZE is the size of the thread_info/kernel_stack combo.
- * normally, the stack is found by doing something like p + THREAD_SIZE
- * in CRIS, a page is 8192 bytes, which seems like a sane size
- */
-#define THREAD_SIZE PAGE_SIZE
-#define THREAD_SIZE_ORDER (0)
-
/*
* At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack.
* This macro allows us to find those regs for a task.
@@ -59,8 +52,6 @@ static inline void release_thread(struct task_struct *dead_task)
/* Nothing needs to be done. */
}
-#define init_stack (init_thread_union.stack)
-
#define cpu_relax() barrier()
void default_idle(void);
diff --git a/arch/cris/include/asm/thread_info.h b/arch/cris/include/asm/thread_info.h
index 472830c90997..996fef3be1d5 100644
--- a/arch/cris/include/asm/thread_info.h
+++ b/arch/cris/include/asm/thread_info.h
@@ -20,6 +20,13 @@
#endif
+/* THREAD_SIZE is the size of the thread_info/kernel_stack combo.
+ * normally, the stack is found by doing something like p + THREAD_SIZE
+ * in CRIS, a page is 8192 bytes, which seems like a sane size
+ */
+#define THREAD_SIZE PAGE_SIZE
+#define THREAD_SIZE_ORDER (0)
+
/*
* low level task data that entry.S needs immediate access to
* - this struct should fit entirely inside of one cache line
@@ -56,8 +63,6 @@ struct thread_info {
.addr_limit = KERNEL_DS, \
}
-#define init_thread_info (init_thread_union.thread_info)
-
#endif /* !__ASSEMBLY__ */
/*
diff --git a/arch/cris/kernel/Makefile b/arch/cris/kernel/Makefile
index af075a5fb9aa..f6bfee6c8c1b 100644
--- a/arch/cris/kernel/Makefile
+++ b/arch/cris/kernel/Makefile
@@ -1,19 +1,17 @@
# SPDX-License-Identifier: GPL-2.0
-# $Id: Makefile,v 1.12 2004/10/19 13:07:43 starvik Exp $
#
-# Makefile for the linux kernel.
+# Makefile for the CRIS port.
#
CPPFLAGS_vmlinux.lds := -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE)
-extra-y := vmlinux.lds
+extra-y := vmlinux.lds
-obj-y := process.o traps.o irq.o ptrace.o setup.o time.o sys_cris.o
-obj-y += devicetree.o
+obj-y := process.o traps.o irq.o ptrace.o setup.o time.o sys_cris.o
obj-y += stacktrace.o
-obj-$(CONFIG_MODULES) += crisksyms.o
-obj-$(CONFIG_MODULES) += module.o
-obj-$(CONFIG_SYSTEM_PROFILER) += profile.o
+obj-$(CONFIG_MODULES) += crisksyms.o
+obj-$(CONFIG_MODULES) += module.o
+obj-$(CONFIG_SYSTEM_PROFILER) += profile.o
clean:
diff --git a/arch/cris/kernel/devicetree.c b/arch/cris/kernel/devicetree.c
deleted file mode 100644
index 36e1c658229f..000000000000
--- a/arch/cris/kernel/devicetree.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/printk.h>
-
-void __init early_init_dt_add_memory_arch(u64 base, u64 size)
-{
- pr_err("%s(%llx, %llx)\n",
- __func__, base, size);
-}
-
-void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
-{
- return alloc_bootmem_align(size, align);
-}
diff --git a/arch/cris/kernel/setup.c b/arch/cris/kernel/setup.c
index 524d47501a23..1b61a7207afb 100644
--- a/arch/cris/kernel/setup.c
+++ b/arch/cris/kernel/setup.c
@@ -24,6 +24,7 @@
#include <linux/of_fdt.h>
#include <asm/setup.h>
#include <arch/system.h>
+#include <asm/sections.h>
/*
* Setup options
@@ -31,7 +32,6 @@
struct screen_info screen_info;
extern int root_mountflags;
-extern char _etext, _edata, _end;
char __initdata cris_command_line[COMMAND_LINE_SIZE] = { 0, };
diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S
index 6d1dbc1ba767..9b232e0f673e 100644
--- a/arch/cris/kernel/vmlinux.lds.S
+++ b/arch/cris/kernel/vmlinux.lds.S
@@ -11,6 +11,7 @@
#include <asm-generic/vmlinux.lds.h>
#include <asm/page.h>
+#include <asm/thread_info.h>
#ifdef CONFIG_ETRAX_VMEM_SIZE
#define __CONFIG_ETRAX_VMEM_SIZE CONFIG_ETRAX_VMEM_SIZE
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.