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-rw-r--r--arch/sh/Kconfig15
-rw-r--r--arch/sh/boards/board-sh7785lcr.c11
-rw-r--r--arch/sh/boards/of-generic.c6
-rw-r--r--arch/sh/boot/compressed/misc.c9
-rw-r--r--arch/sh/drivers/dma/dma-api.c14
-rw-r--r--arch/sh/drivers/pci/pci.c5
-rw-r--r--arch/sh/drivers/pci/pcie-sh7786.c78
-rw-r--r--arch/sh/include/asm/Kbuild1
-rw-r--r--arch/sh/include/asm/futex.h5
-rw-r--r--arch/sh/include/asm/pci.h6
-rw-r--r--arch/sh/include/cpu-sh4/cpu/sh7786.h7
-rw-r--r--arch/sh/kernel/cpu/sh2/probe.c4
-rw-r--r--arch/sh/kernel/dma-nommu.c8
-rw-r--r--arch/sh/kernel/entry-common.S2
-rw-r--r--arch/sh/kernel/hw_breakpoint.c9
-rw-r--r--arch/sh/kernel/irq.c2
-rw-r--r--arch/sh/kernel/setup.c9
-rw-r--r--arch/sh/kernel/traps_32.c20
-rw-r--r--arch/sh/math-emu/math.c8
-rw-r--r--arch/sh/mm/cache-sh4.c2
-rw-r--r--arch/sh/mm/cache-sh7705.c2
-rw-r--r--arch/sh/mm/consistent.c16
-rw-r--r--arch/sh/mm/fault.c9
-rw-r--r--arch/sh/mm/gup.c2
-rw-r--r--arch/sh/mm/init.c68
-rw-r--r--arch/sh/mm/numa.c19
26 files changed, 135 insertions, 202 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 97fe29316476..ae619d54018c 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -9,11 +9,11 @@ config SUPERH
select HAVE_IDE if HAS_IOPORT_MAP
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
+ select NO_BOOTMEM
select ARCH_DISCARD_MEMBLOCK
select HAVE_OPROFILE
select HAVE_GENERIC_DMA_COHERENT
select HAVE_ARCH_TRACEHOOK
- select HAVE_DMA_API_DEBUG
select HAVE_PERF_EVENTS
select HAVE_DEBUG_BUGVERBOSE
select ARCH_HAVE_CUSTOM_GPIO_H
@@ -50,6 +50,9 @@ config SUPERH
select HAVE_ARCH_AUDITSYSCALL
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_NMI
+ select NEED_DMA_MAP_STATE
+ select NEED_SG_DMA_LENGTH
+
help
The SuperH is a RISC processor targeted for use in embedded systems
and consumer electronics; it was also used in the Sega Dreamcast
@@ -57,7 +60,7 @@ config SUPERH
<http://www.linux-sh.org/>.
config SUPERH32
- def_bool ARCH = "sh"
+ def_bool "$(ARCH)" = "sh"
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_IOREMAP_PROT if MMU && !X2TLB
@@ -76,7 +79,7 @@ config SUPERH32
select HAVE_CC_STACKPROTECTOR
config SUPERH64
- def_bool ARCH = "sh64"
+ def_bool "$(ARCH)" = "sh64"
select HAVE_EXIT_THREAD
select KALLSYMS
@@ -160,12 +163,6 @@ config DMA_COHERENT
config DMA_NONCOHERENT
def_bool !DMA_COHERENT
-config NEED_DMA_MAP_STATE
- def_bool DMA_NONCOHERENT
-
-config NEED_SG_DMA_LENGTH
- def_bool y
-
config PGTABLE_LEVELS
default 3 if X2TLB
default 2
diff --git a/arch/sh/boards/board-sh7785lcr.c b/arch/sh/boards/board-sh7785lcr.c
index 2c4771ee84cd..d7d232dea33e 100644
--- a/arch/sh/boards/board-sh7785lcr.c
+++ b/arch/sh/boards/board-sh7785lcr.c
@@ -25,6 +25,7 @@
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/errno.h>
+#include <linux/gpio/machine.h>
#include <mach/sh7785lcr.h>
#include <cpu/sh7785.h>
#include <asm/heartbeat.h>
@@ -243,8 +244,15 @@ static struct resource i2c_resources[] = {
},
};
+static struct gpiod_lookup_table i2c_gpio_table = {
+ .dev_id = "i2c.0",
+ .table = {
+ GPIO_LOOKUP("pfc-sh7757", 0, "reset-gpios", GPIO_ACTIVE_LOW),
+ { },
+ },
+};
+
static struct i2c_pca9564_pf_platform_data i2c_platform_data = {
- .gpio = 0,
.i2c_clock_speed = I2C_PCA_CON_330kHz,
.timeout = HZ,
};
@@ -283,6 +291,7 @@ static int __init sh7785lcr_devices_setup(void)
i2c_device.num_resources = ARRAY_SIZE(i2c_proto_resources);
}
+ gpiod_add_lookup_table(&i2c_gpio_table);
return platform_add_devices(sh7785lcr_devices,
ARRAY_SIZE(sh7785lcr_devices));
}
diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
index 4feb7c86f4ac..46b2481eec90 100644
--- a/arch/sh/boards/of-generic.c
+++ b/arch/sh/boards/of-generic.c
@@ -126,12 +126,6 @@ static void __init sh_of_setup(char **cmdline_p)
{
struct device_node *root;
-#ifdef CONFIG_USE_BUILTIN_DTB
- unflatten_and_copy_device_tree();
-#else
- unflatten_device_tree();
-#endif
-
board_time_init = sh_of_time_init;
sh_mv.mv_name = "Unknown SH model";
diff --git a/arch/sh/boot/compressed/misc.c b/arch/sh/boot/compressed/misc.c
index 627ce8e75e01..c15cac9251b9 100644
--- a/arch/sh/boot/compressed/misc.c
+++ b/arch/sh/boot/compressed/misc.c
@@ -104,12 +104,7 @@ static void error(char *x)
while(1); /* Halt */
}
-unsigned long __stack_chk_guard;
-
-void __stack_chk_guard_setup(void)
-{
- __stack_chk_guard = 0x000a0dff;
-}
+const unsigned long __stack_chk_guard = 0x000a0dff;
void __stack_chk_fail(void)
{
@@ -130,8 +125,6 @@ void decompress_kernel(void)
{
unsigned long output_addr;
- __stack_chk_guard_setup();
-
#ifdef CONFIG_SUPERH64
output_addr = (CONFIG_MEMORY_START + 0x2000);
#else
diff --git a/arch/sh/drivers/dma/dma-api.c b/arch/sh/drivers/dma/dma-api.c
index c0eec08d8f95..b05be597b19f 100644
--- a/arch/sh/drivers/dma/dma-api.c
+++ b/arch/sh/drivers/dma/dma-api.c
@@ -339,18 +339,6 @@ static int dma_proc_show(struct seq_file *m, void *v)
return 0;
}
-static int dma_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dma_proc_show, NULL);
-}
-
-static const struct file_operations dma_proc_fops = {
- .open = dma_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
int register_dmac(struct dma_info *info)
{
unsigned int total_channels, i;
@@ -423,7 +411,7 @@ EXPORT_SYMBOL(unregister_dmac);
static int __init dma_api_init(void)
{
printk(KERN_NOTICE "DMA: Registering DMA API.\n");
- return proc_create("dma", 0, NULL, &dma_proc_fops) ? 0 : -ENOMEM;
+ return proc_create_single("dma", 0, NULL, dma_proc_show) ? 0 : -ENOMEM;
}
subsys_initcall(dma_api_init);
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index 5976a2c8a3e3..e5b7437ab4af 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -49,6 +49,8 @@ static void pcibios_scanbus(struct pci_channel *hose)
for (i = 0; i < hose->nr_resources; i++) {
res = hose->resources + i;
offset = 0;
+ if (res->flags & IORESOURCE_DISABLED)
+ continue;
if (res->flags & IORESOURCE_IO)
offset = hose->io_offset;
else if (res->flags & IORESOURCE_MEM)
@@ -102,6 +104,9 @@ int register_pci_controller(struct pci_channel *hose)
for (i = 0; i < hose->nr_resources; i++) {
struct resource *res = hose->resources + i;
+ if (res->flags & IORESOURCE_DISABLED)
+ continue;
+
if (res->flags & IORESOURCE_IO) {
if (request_resource(&ioport_resource, res) < 0)
goto out;
diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c
index 0167a7352719..382e7ecf4c82 100644
--- a/arch/sh/drivers/pci/pcie-sh7786.c
+++ b/arch/sh/drivers/pci/pcie-sh7786.c
@@ -19,6 +19,7 @@
#include <linux/clk.h>
#include <linux/sh_clk.h>
#include <linux/sh_intc.h>
+#include <cpu/sh7786.h>
#include "pcie-sh7786.h"
#include <asm/sizes.h>
@@ -32,6 +33,7 @@ struct sh7786_pcie_port {
static struct sh7786_pcie_port *sh7786_pcie_ports;
static unsigned int nr_ports;
+static unsigned long dma_pfn_offset;
static struct sh7786_pcie_hwops {
int (*core_init)(void);
@@ -40,73 +42,73 @@ static struct sh7786_pcie_hwops {
static struct resource sh7786_pci0_resources[] = {
{
- .name = "PCIe0 IO",
+ .name = "PCIe0 MEM 0",
.start = 0xfd000000,
.end = 0xfd000000 + SZ_8M - 1,
- .flags = IORESOURCE_IO,
+ .flags = IORESOURCE_MEM,
}, {
- .name = "PCIe0 MEM 0",
+ .name = "PCIe0 MEM 1",
.start = 0xc0000000,
.end = 0xc0000000 + SZ_512M - 1,
.flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
}, {
- .name = "PCIe0 MEM 1",
+ .name = "PCIe0 MEM 2",
.start = 0x10000000,
.end = 0x10000000 + SZ_64M - 1,
.flags = IORESOURCE_MEM,
}, {
- .name = "PCIe0 MEM 2",
+ .name = "PCIe0 IO",
.start = 0xfe100000,
.end = 0xfe100000 + SZ_1M - 1,
- .flags = IORESOURCE_MEM,
+ .flags = IORESOURCE_IO,
},
};
static struct resource sh7786_pci1_resources[] = {
{
- .name = "PCIe1 IO",
+ .name = "PCIe1 MEM 0",
.start = 0xfd800000,
.end = 0xfd800000 + SZ_8M - 1,
- .flags = IORESOURCE_IO,
+ .flags = IORESOURCE_MEM,
}, {
- .name = "PCIe1 MEM 0",
+ .name = "PCIe1 MEM 1",
.start = 0xa0000000,
.end = 0xa0000000 + SZ_512M - 1,
.flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
}, {
- .name = "PCIe1 MEM 1",
+ .name = "PCIe1 MEM 2",
.start = 0x30000000,
.end = 0x30000000 + SZ_256M - 1,
.flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
}, {
- .name = "PCIe1 MEM 2",
+ .name = "PCIe1 IO",
.start = 0xfe300000,
.end = 0xfe300000 + SZ_1M - 1,
- .flags = IORESOURCE_MEM,
+ .flags = IORESOURCE_IO,
},
};
static struct resource sh7786_pci2_resources[] = {
{
- .name = "PCIe2 IO",
+ .name = "PCIe2 MEM 0",
.start = 0xfc800000,
.end = 0xfc800000 + SZ_4M - 1,
- .flags = IORESOURCE_IO,
+ .flags = IORESOURCE_MEM,
}, {
- .name = "PCIe2 MEM 0",
+ .name = "PCIe2 MEM 1",
.start = 0x80000000,
.end = 0x80000000 + SZ_512M - 1,
.flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
}, {
- .name = "PCIe2 MEM 1",
+ .name = "PCIe2 MEM 2",
.start = 0x20000000,
.end = 0x20000000 + SZ_256M - 1,
.flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
}, {
- .name = "PCIe2 MEM 2",
+ .name = "PCIe2 IO",
.start = 0xfcd00000,
.end = 0xfcd00000 + SZ_1M - 1,
- .flags = IORESOURCE_MEM,
+ .flags = IORESOURCE_IO,
},
};
@@ -301,7 +303,7 @@ static int __init pcie_init(struct sh7786_pcie_port *port)
{
struct pci_channel *chan = port->hose;
unsigned int data;
- phys_addr_t memphys;
+ phys_addr_t memstart, memend;
size_t memsize;
int ret, i, win;
@@ -357,15 +359,26 @@ static int __init pcie_init(struct sh7786_pcie_port *port)
data |= (0xff << 16);
pci_write_reg(chan, data, SH4A_PCIEMACCTLR);
- memphys = __pa(memory_start);
- memsize = roundup_pow_of_two(memory_end - memory_start);
+ memstart = __pa(memory_start);
+ memend = __pa(memory_end);
+ memsize = roundup_pow_of_two(memend - memstart);
+
+ /*
+ * The start address must be aligned on its size. So we round
+ * it down, and then recalculate the size so that it covers
+ * the entire memory.
+ */
+ memstart = ALIGN_DOWN(memstart, memsize);
+ memsize = roundup_pow_of_two(memend - memstart);
+
+ dma_pfn_offset = memstart >> PAGE_SHIFT;
/*
* If there's more than 512MB of memory, we need to roll over to
* LAR1/LAMR1.
*/
if (memsize > SZ_512M) {
- pci_write_reg(chan, memphys + SZ_512M, SH4A_PCIELAR1);
+ pci_write_reg(chan, memstart + SZ_512M, SH4A_PCIELAR1);
pci_write_reg(chan, ((memsize - SZ_512M) - SZ_256) | 1,
SH4A_PCIELAMR1);
memsize = SZ_512M;
@@ -381,7 +394,7 @@ static int __init pcie_init(struct sh7786_pcie_port *port)
* LAR0/LAMR0 covers up to the first 512MB, which is enough to
* cover all of lowmem on most platforms.
*/
- pci_write_reg(chan, memphys, SH4A_PCIELAR0);
+ pci_write_reg(chan, memstart, SH4A_PCIELAR0);
pci_write_reg(chan, (memsize - SZ_256) | 1, SH4A_PCIELAMR0);
/* Finish initialization */
@@ -438,6 +451,9 @@ static int __init pcie_init(struct sh7786_pcie_port *port)
* mode, so just skip them entirely.
*/
if ((res->flags & IORESOURCE_MEM_32BIT) && __in_29bit_mode())
+ res->flags |= IORESOURCE_DISABLED;
+
+ if (res->flags & IORESOURCE_DISABLED)
continue;
pci_write_reg(chan, 0x00000000, SH4A_PCIEPTCTLR(win));
@@ -472,6 +488,11 @@ int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
return evt2irq(0xae0);
}
+void pcibios_bus_add_device(struct pci_dev *pdev)
+{
+ pdev->dev.dma_pfn_offset = dma_pfn_offset;
+}
+
static int __init sh7786_pcie_core_init(void)
{
/* Return the number of ports */
@@ -527,6 +548,7 @@ static struct sh7786_pcie_hwops sh7786_65nm_pcie_hwops __initdata = {
static int __init sh7786_pcie_init(void)
{
struct clk *platclk;
+ u32 mm_sel;
int i;
printk(KERN_NOTICE "PCI: Starting initialization.\n");
@@ -560,6 +582,16 @@ static int __init sh7786_pcie_init(void)
clk_enable(platclk);
+ mm_sel = sh7786_mm_sel();
+
+ /*
+ * Depending on the MMSELR register value, the PCIe0 MEM 1
+ * area may not be available. See Table 13.11 of the SH7786
+ * datasheet.
+ */
+ if (mm_sel != 1 && mm_sel != 2 && mm_sel != 5 && mm_sel != 6)
+ sh7786_pci0_resources[2].flags |= IORESOURCE_DISABLED;
+
printk(KERN_NOTICE "PCI: probing %d ports.\n", nr_ports);
for (i = 0; i < nr_ports; i++) {
diff --git a/arch/sh/include/asm/Kbuild b/arch/sh/include/asm/Kbuild
index 1efcce74997b..46dd82ab2c29 100644
--- a/arch/sh/include/asm/Kbuild
+++ b/arch/sh/include/asm/Kbuild
@@ -1,3 +1,4 @@
+generic-y += compat.h
generic-y += current.h
generic-y += delay.h
generic-y += div64.h
diff --git a/arch/sh/include/asm/futex.h b/arch/sh/include/asm/futex.h
index 15bf07bfa96b..6d192f4908a7 100644
--- a/arch/sh/include/asm/futex.h
+++ b/arch/sh/include/asm/futex.h
@@ -37,10 +37,7 @@ static inline int arch_futex_atomic_op_inuser(int op, u32 oparg, int *oval,
pagefault_disable();
do {
- if (op == FUTEX_OP_SET)
- ret = oldval = 0;
- else
- ret = get_user(oldval, uaddr);
+ ret = get_user(oldval, uaddr);
if (ret) break;
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index 0033f0df2b3b..10a36b1cf2ea 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -71,12 +71,6 @@ extern unsigned long PCIBIOS_MIN_IO, PCIBIOS_MIN_MEM;
* SuperH has everything mapped statically like x86.
*/
-/* The PCI address space does equal the physical memory
- * address space. The networking and block device layers use
- * this boolean for bounce buffer decisions.
- */
-#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
-
#ifdef CONFIG_PCI
/*
* None of the SH PCI controllers support MWI, it is always treated as a
diff --git a/arch/sh/include/cpu-sh4/cpu/sh7786.h b/arch/sh/include/cpu-sh4/cpu/sh7786.h
index 0df09e638f09..96b8cb1f754a 100644
--- a/arch/sh/include/cpu-sh4/cpu/sh7786.h
+++ b/arch/sh/include/cpu-sh4/cpu/sh7786.h
@@ -14,6 +14,8 @@
#ifndef __CPU_SH7786_H__
#define __CPU_SH7786_H__
+#include <linux/io.h>
+
enum {
/* PA */
GPIO_PA7, GPIO_PA6, GPIO_PA5, GPIO_PA4,
@@ -131,4 +133,9 @@ enum {
GPIO_FN_IRL7, GPIO_FN_IRL6, GPIO_FN_IRL5, GPIO_FN_IRL4,
};
+static inline u32 sh7786_mm_sel(void)
+{
+ return __raw_readl(0xFC400020) & 0x7;
+}
+
#endif /* __CPU_SH7786_H__ */
diff --git a/arch/sh/kernel/cpu/sh2/probe.c b/arch/sh/kernel/cpu/sh2/probe.c
index 4205f6d42b69..a5bd03642678 100644
--- a/arch/sh/kernel/cpu/sh2/probe.c
+++ b/arch/sh/kernel/cpu/sh2/probe.c
@@ -43,7 +43,11 @@ void __ref cpu_probe(void)
#endif
#if defined(CONFIG_CPU_J2)
+#if defined(CONFIG_SMP)
unsigned cpu = hard_smp_processor_id();
+#else
+ unsigned cpu = 0;
+#endif
if (cpu == 0) of_scan_flat_dt(scan_cache, NULL);
if (j2_ccr_base) __raw_writel(0x80000303, j2_ccr_base + 4*cpu);
if (cpu != 0) return;
diff --git a/arch/sh/kernel/dma-nommu.c b/arch/sh/kernel/dma-nommu.c
index 62b485107eae..3e3a32fc676e 100644
--- a/arch/sh/kernel/dma-nommu.c
+++ b/arch/sh/kernel/dma-nommu.c
@@ -16,7 +16,8 @@ static dma_addr_t nommu_map_page(struct device *dev, struct page *page,
enum dma_data_direction dir,
unsigned long attrs)
{
- dma_addr_t addr = page_to_phys(page) + offset;
+ dma_addr_t addr = page_to_phys(page) + offset
+ - PFN_PHYS(dev->dma_pfn_offset);
WARN_ON(size == 0);
@@ -36,12 +37,14 @@ static int nommu_map_sg(struct device *dev, struct scatterlist *sg,
WARN_ON(nents == 0 || sg[0].length == 0);
for_each_sg(sg, s, nents, i) {
+ dma_addr_t offset = PFN_PHYS(dev->dma_pfn_offset);
+
BUG_ON(!sg_page(s));
if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
sh_sync_dma_for_device(sg_virt(s), s->length, dir);
- s->dma_address = sg_phys(s);
+ s->dma_address = sg_phys(s) - offset;
s->dma_length = s->length;
}
@@ -75,7 +78,6 @@ const struct dma_map_ops nommu_dma_ops = {
.sync_single_for_device = nommu_sync_single_for_device,
.sync_sg_for_device = nommu_sync_sg_for_device,
#endif
- .is_phys = 1,
};
void __init no_iommu_init(void)
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index c001f782c5f1..28cc61216b64 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -255,7 +255,7 @@ debug_trap:
mov.l @r8, r8
jsr @r8
nop
- bra __restore_all
+ bra ret_from_exception
nop
CFI_ENDPROC
diff --git a/arch/sh/kernel/hw_breakpoint.c b/arch/sh/kernel/hw_breakpoint.c
index afe965712a69..8648ed05ccf0 100644
--- a/arch/sh/kernel/hw_breakpoint.c
+++ b/arch/sh/kernel/hw_breakpoint.c
@@ -347,13 +347,8 @@ static int __kprobes hw_breakpoint_handler(struct die_args *args)
/* Deliver the signal to userspace */
if (!arch_check_bp_in_kernelspace(bp)) {
- siginfo_t info;
-
- info.si_signo = args->signr;
- info.si_errno = notifier_to_errno(rc);
- info.si_code = TRAP_HWBKPT;
-
- force_sig_info(args->signr, &info, current);
+ force_sig_fault(SIGTRAP, TRAP_HWBKPT,
+ (void __user *)NULL, current);
}
rcu_read_unlock();
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 245dbeb20afe..5717c7cbdd97 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -44,7 +44,7 @@ int arch_show_interrupts(struct seq_file *p, int prec)
seq_printf(p, "%*s: ", prec, "NMI");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", irq_stat[j].__nmi_count);
+ seq_printf(p, "%10u ", nmi_count(j));
seq_printf(p, " Non-maskable interrupts\n");
seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index b95c411d0333..c286cf5da6e7 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -11,7 +11,6 @@
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/initrd.h>
-#include <linux/bootmem.h>
#include <linux/console.h>
#include <linux/root_dev.h>
#include <linux/utsname.h>
@@ -330,6 +329,14 @@ void __init setup_arch(char **cmdline_p)
/* Let earlyprintk output early console messages */
early_platform_driver_probe("earlyprintk", 1, 1);
+#ifdef CONFIG_OF_FLATTREE
+#ifdef CONFIG_USE_BUILTIN_DTB
+ unflatten_and_copy_device_tree();
+#else
+ unflatten_device_tree();
+#endif
+#endif
+
paging_init();
#ifdef CONFIG_DUMMY_CONSOLE
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index b3770bb26211..60709ad17fc7 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -477,7 +477,6 @@ asmlinkage void do_address_error(struct pt_regs *regs,
{
unsigned long error_code = 0;
mm_segment_t oldfs;
- siginfo_t info;
insn_size_t instruction;
int tmp;
@@ -537,11 +536,7 @@ uspace_segv:
"access (PC %lx PR %lx)\n", current->comm, regs->pc,
regs->pr);
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = si_code;
- info.si_addr = (void __user *)address;
- force_sig_info(SIGBUS, &info, current);
+ force_sig_fault(SIGBUS, si_code, (void __user *)address, current);
} else {
inc_unaligned_kernel_access();
@@ -598,19 +593,20 @@ int is_dsp_inst(struct pt_regs *regs)
#ifdef CONFIG_CPU_SH2A
asmlinkage void do_divide_error(unsigned long r4)
{
- siginfo_t info;
+ int code;
switch (r4) {
case TRAP_DIVZERO_ERROR:
- info.si_code = FPE_INTDIV;
+ code = FPE_INTDIV;
break;
case TRAP_DIVOVF_ERROR:
- info.si_code = FPE_INTOVF;
+ code = FPE_INTOVF;
break;
+ default:
+ /* Let gcc know unhandled cases don't make it past here */
+ return;
}
-
- info.si_signo = SIGFPE;
- force_sig_info(info.si_signo, &info, current);
+ force_sig_fault(SIGFPE, code, NULL, current);
}
#endif
diff --git a/arch/sh/math-emu/math.c b/arch/sh/math-emu/math.c
index c86f4360c6ce..a0fa8fc88739 100644
--- a/arch/sh/math-emu/math.c
+++ b/arch/sh/math-emu/math.c
@@ -507,7 +507,6 @@ static int ieee_fpe_handler(struct pt_regs *regs)
unsigned short insn = *(unsigned short *)regs->pc;
unsigned short finsn;
unsigned long nextpc;
- siginfo_t info;
int nib[4] = {
(insn >> 12) & 0xf,
(insn >> 8) & 0xf,
@@ -560,11 +559,8 @@ static int ieee_fpe_handler(struct pt_regs *regs)
~(FPSCR_CAUSE_MASK | FPSCR_FLAG_MASK);
task_thread_info(tsk)->status |= TS_USEDFPU;
} else {
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = FPE_FLTINV;
- info.si_addr = (void __user *)regs->pc;
- force_sig_info(SIGFPE, &info, tsk);
+ force_sig_fault(SIGFPE, FPE_FLTINV,
+ (void __user *)regs->pc, tsk);
}
regs->pc = nextpc;
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index 58aaa4f33b81..eee911422cf9 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -112,7 +112,7 @@ static void sh4_flush_dcache_page(void *arg)
struct page *page = arg;
unsigned long addr = (unsigned long)page_address(page);
#ifndef CONFIG_SMP
- struct address_space *mapping = page_mapping(page);
+ struct address_space *mapping = page_mapping_file(page);
if (mapping && !mapping_mapped(mapping))
clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c
index 6cd2aa395817..ed25eba80667 100644
--- a/arch/sh/mm/cache-sh7705.c
+++ b/arch/sh/mm/cache-sh7705.c
@@ -136,7 +136,7 @@ static void __flush_dcache_page(unsigned long phys)
static void sh7705_flush_dcache_page(void *arg)
{
struct page *page = arg;
- struct address_space *mapping = page_mapping(page);
+ struct address_space *mapping = page_mapping_file(page);
if (mapping && !mapping_mapped(mapping))
clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 6ea3aab508f2..fceb2adfcac7 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -20,18 +20,9 @@
#include <asm/cacheflush.h>
#include <asm/addrspace.h>
-#define PREALLOC_DMA_DEBUG_ENTRIES 4096
-
const struct dma_map_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);
-static int __init dma_init(void)
-{
- dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
- return 0;
-}
-fs_initcall(dma_init);
-
void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
unsigned long attrs)
@@ -60,6 +51,8 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size,
split_page(pfn_to_page(virt_to_phys(ret) >> PAGE_SHIFT), order);
*dma_handle = virt_to_phys(ret);
+ if (!WARN_ON(!dev))
+ *dma_handle -= PFN_PHYS(dev->dma_pfn_offset);
return ret_nocache;
}
@@ -72,6 +65,9 @@ void dma_generic_free_coherent(struct device *dev, size_t size,
unsigned long pfn = dma_handle >> PAGE_SHIFT;
int k;
+ if (!WARN_ON(!dev))
+ pfn += dev->dma_pfn_offset;
+
for (k = 0; k < (1 << order); k++)
__free_pages(pfn_to_page(pfn + k), 0);
@@ -143,7 +139,7 @@ int __init platform_resource_setup_memory(struct platform_device *pdev,
if (!memsize)
return 0;
- buf = dma_alloc_coherent(NULL, memsize, &dma_handle, GFP_KERNEL);
+ buf = dma_alloc_coherent(&pdev->dev, memsize, &dma_handle, GFP_KERNEL);
if (!buf) {
pr_warning("%s: unable to allocate memory\n", name);
return -ENOMEM;
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index 6fd1bf7481c7..b8e7bb84b6b1 100644
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -42,14 +42,7 @@ static void
force_sig_info_fault(int si_signo, int si_code, unsigned long address,
struct task_struct *tsk)
{
- siginfo_t info;
-
- info.si_signo = si_signo;
- info.si_errno = 0;
- info.si_code = si_code;
- info.si_addr = (void __user *)address;
-
- force_sig_info(si_signo, &info, tsk);
+ force_sig_fault(si_signo, si_code, (void __user *)address, tsk);
}
/*
diff --git a/arch/sh/mm/gup.c b/arch/sh/mm/gup.c
index 8045b5bb7075..56c86ca98ecf 100644
--- a/arch/sh/mm/gup.c
+++ b/arch/sh/mm/gup.c
@@ -160,6 +160,8 @@ static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end,
/*
* Like get_user_pages_fast() except its IRQ-safe in that it won't fall
* back to the regular GUP.
+ * Note a difference with get_user_pages_fast: this always returns the
+ * number of pages pinned, 0 if no pages were pinned.
*/
int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages)
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index ce0bbaa7e404..4034035fbede 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -211,59 +211,15 @@ void __init allocate_pgdat(unsigned int nid)
NODE_DATA(nid) = __va(phys);
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
-
- NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
#endif
NODE_DATA(nid)->node_start_pfn = start_pfn;
NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
}
-static void __init bootmem_init_one_node(unsigned int nid)
-{
- unsigned long total_pages, paddr;
- unsigned long end_pfn;
- struct pglist_data *p;
-
- p = NODE_DATA(nid);
-
- /* Nothing to do.. */
- if (!p->node_spanned_pages)
- return;
-
- end_pfn = pgdat_end_pfn(p);
-
- total_pages = bootmem_bootmap_pages(p->node_spanned_pages);
-
- paddr = memblock_alloc(total_pages << PAGE_SHIFT, PAGE_SIZE);
- if (!paddr)
- panic("Can't allocate bootmap for nid[%d]\n", nid);
-
- init_bootmem_node(p, paddr >> PAGE_SHIFT, p->node_start_pfn, end_pfn);
-
- free_bootmem_with_active_regions(nid, end_pfn);
-
- /*
- * XXX Handle initial reservations for the system memory node
- * only for the moment, we'll refactor this later for handling
- * reservations in other nodes.
- */
- if (nid == 0) {
- struct memblock_region *reg;
-
- /* Reserve the sections we're already using. */
- for_each_memblock(reserved, reg) {
- reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
- }
- }
-
- sparse_memory_present_with_active_regions(nid);
-}
-
static void __init do_init_bootmem(void)
{
struct memblock_region *reg;
- int i;
/* Add active regions with valid PFNs. */
for_each_memblock(memory, reg) {
@@ -279,9 +235,12 @@ static void __init do_init_bootmem(void)
plat_mem_setup();
- for_each_online_node(i)
- bootmem_init_one_node(i);
+ for_each_memblock(memory, reg) {
+ int nid = memblock_get_region_node(reg);
+ memory_present(nid, memblock_region_memory_base_pfn(reg),
+ memblock_region_memory_end_pfn(reg));
+ }
sparse_init();
}
@@ -322,7 +281,6 @@ void __init paging_init(void)
{
unsigned long max_zone_pfns[MAX_NR_ZONES];
unsigned long vaddr, end;
- int nid;
sh_mv.mv_mem_init();
@@ -377,21 +335,7 @@ void __init paging_init(void)
kmap_coherent_init();
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
-
- for_each_online_node(nid) {
- pg_data_t *pgdat = NODE_DATA(nid);
- unsigned long low, start_pfn;
-
- start_pfn = pgdat->bdata->node_min_pfn;
- low = pgdat->bdata->node_low_pfn;
-
- if (max_zone_pfns[ZONE_NORMAL] < low)
- max_zone_pfns[ZONE_NORMAL] = low;
-
- printk("Node %u: start_pfn = 0x%lx, low = 0x%lx\n",
- nid, start_pfn, low);
- }
-
+ max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
free_area_init_nodes(max_zone_pfns);
}
diff --git a/arch/sh/mm/numa.c b/arch/sh/mm/numa.c
index 05713d190247..830e8b3684e4 100644
--- a/arch/sh/mm/numa.c
+++ b/arch/sh/mm/numa.c
@@ -8,7 +8,6 @@
* for more details.
*/
#include <linux/module.h>
-#include <linux/bootmem.h>
#include <linux/memblock.h>
#include <linux/mm.h>
#include <linux/numa.h>
@@ -26,9 +25,7 @@ EXPORT_SYMBOL_GPL(node_data);
*/
void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
{
- unsigned long bootmap_pages;
unsigned long start_pfn, end_pfn;
- unsigned long bootmem_paddr;
/* Don't allow bogus node assignment */
BUG_ON(nid >= MAX_NUMNODES || nid <= 0);
@@ -48,25 +45,9 @@ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
SMP_CACHE_BYTES, end));
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
- NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
NODE_DATA(nid)->node_start_pfn = start_pfn;
NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
- /* Node-local bootmap */
- bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
- bootmem_paddr = memblock_alloc_base(bootmap_pages << PAGE_SHIFT,
- PAGE_SIZE, end);
- init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
- start_pfn, end_pfn);
-
- free_bootmem_with_active_regions(nid, end_pfn);
-
- /* Reserve the pgdat and bootmap space with the bootmem allocator */
- reserve_bootmem_node(NODE_DATA(nid), start_pfn << PAGE_SHIFT,
- sizeof(struct pglist_data), BOOTMEM_DEFAULT);
- reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr,
- bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
-
/* It's up */
node_set_online(nid);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.