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authorLinus Torvalds <torvalds@linux-foundation.org>2013-06-19 06:23:56 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2013-06-19 06:23:56 -1000
commitaa4927b9edb74f0456d55426bfc44766eae508fe (patch)
treef10c2256b52247f86dcac992feaf76a21e3d52b5
parent418a133b714352c35f050d59857f95f769d552d2 (diff)
parentd65ea48dc61ffdf6cd7f25b4c319bbd68015e018 (diff)
downloadlinux-linaro-stable-aa4927b9edb74f0456d55426bfc44766eae508fe.tar.gz
Merge branch 'parisc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller: "This contains a kernel segfault fix when reading /proc/kpageflags or /proc/kpagecount, two fixes for the serial port and PCI graphic card support on C8000 workstations and a fix to use unshadowed registers for flushing D- and I-caches." * 'parisc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Use unshadowed index register for flush instructions in flush_dcache_page_asm and flush_icache_page_asm parisc: provide pci_mmap_page_range() for parisc parisc: fix serial ports on C8000 workstation parisc: fix kernel BUG at arch/parisc/include/asm/mmzone.h:50 (part 2)
-rw-r--r--arch/parisc/include/asm/mmzone.h4
-rw-r--r--arch/parisc/include/asm/pci.h5
-rw-r--r--arch/parisc/kernel/hardware.c1
-rw-r--r--arch/parisc/kernel/pacache.S76
-rw-r--r--arch/parisc/kernel/pci.c27
-rw-r--r--arch/parisc/mm/init.c2
-rw-r--r--drivers/parisc/iosapic.c66
-rw-r--r--drivers/tty/serial/8250/8250_gsc.c10
8 files changed, 149 insertions, 42 deletions
diff --git a/arch/parisc/include/asm/mmzone.h b/arch/parisc/include/asm/mmzone.h
index cc50d33b7b88..b6b34a0987e7 100644
--- a/arch/parisc/include/asm/mmzone.h
+++ b/arch/parisc/include/asm/mmzone.h
@@ -27,7 +27,7 @@ extern struct node_map_data node_data[];
#define PFNNID_SHIFT (30 - PAGE_SHIFT)
#define PFNNID_MAP_MAX 512 /* support 512GB */
-extern unsigned char pfnnid_map[PFNNID_MAP_MAX];
+extern signed char pfnnid_map[PFNNID_MAP_MAX];
#ifndef CONFIG_64BIT
#define pfn_is_io(pfn) ((pfn & (0xf0000000UL >> PAGE_SHIFT)) == (0xf0000000UL >> PAGE_SHIFT))
@@ -46,7 +46,7 @@ static inline int pfn_to_nid(unsigned long pfn)
i = pfn >> PFNNID_SHIFT;
BUG_ON(i >= ARRAY_SIZE(pfnnid_map));
- return (int)pfnnid_map[i];
+ return pfnnid_map[i];
}
static inline int pfn_valid(int pfn)
diff --git a/arch/parisc/include/asm/pci.h b/arch/parisc/include/asm/pci.h
index 3234f492d575..465154076d23 100644
--- a/arch/parisc/include/asm/pci.h
+++ b/arch/parisc/include/asm/pci.h
@@ -225,4 +225,9 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
return channel ? 15 : 14;
}
+#define HAVE_PCI_MMAP
+
+extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state, int write_combine);
+
#endif /* __ASM_PARISC_PCI_H */
diff --git a/arch/parisc/kernel/hardware.c b/arch/parisc/kernel/hardware.c
index 9e2d2e408529..872275659d98 100644
--- a/arch/parisc/kernel/hardware.c
+++ b/arch/parisc/kernel/hardware.c
@@ -1205,6 +1205,7 @@ static struct hp_hardware hp_hardware_list[] = {
{HPHW_FIO, 0x004, 0x00320, 0x0, "Metheus Frame Buffer"},
{HPHW_FIO, 0x004, 0x00340, 0x0, "BARCO CX4500 VME Grphx Cnsl"},
{HPHW_FIO, 0x004, 0x00360, 0x0, "Hughes TOG VME FDDI"},
+ {HPHW_FIO, 0x076, 0x000AD, 0x00, "Crestone Peak RS-232"},
{HPHW_IOA, 0x185, 0x0000B, 0x00, "Java BC Summit Port"},
{HPHW_IOA, 0x1FF, 0x0000B, 0x00, "Hitachi Ghostview Summit Port"},
{HPHW_IOA, 0x580, 0x0000B, 0x10, "U2-IOA BC Runway Port"},
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 36d7f402e48e..b743a80eaba0 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -860,7 +860,7 @@ ENTRY(flush_dcache_page_asm)
#endif
ldil L%dcache_stride, %r1
- ldw R%dcache_stride(%r1), %r1
+ ldw R%dcache_stride(%r1), r31
#ifdef CONFIG_64BIT
depdi,z 1, 63-PAGE_SHIFT,1, %r25
@@ -868,26 +868,26 @@ ENTRY(flush_dcache_page_asm)
depwi,z 1, 31-PAGE_SHIFT,1, %r25
#endif
add %r28, %r25, %r25
- sub %r25, %r1, %r25
-
-
-1: fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
- fdc,m %r1(%r28)
+ sub %r25, r31, %r25
+
+
+1: fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
+ fdc,m r31(%r28)
cmpb,COND(<<) %r28, %r25,1b
- fdc,m %r1(%r28)
+ fdc,m r31(%r28)
sync
@@ -936,7 +936,7 @@ ENTRY(flush_icache_page_asm)
#endif
ldil L%icache_stride, %r1
- ldw R%icache_stride(%r1), %r1
+ ldw R%icache_stride(%r1), %r31
#ifdef CONFIG_64BIT
depdi,z 1, 63-PAGE_SHIFT,1, %r25
@@ -944,28 +944,28 @@ ENTRY(flush_icache_page_asm)
depwi,z 1, 31-PAGE_SHIFT,1, %r25
#endif
add %r28, %r25, %r25
- sub %r25, %r1, %r25
+ sub %r25, %r31, %r25
/* fic only has the type 26 form on PA1.1, requiring an
* explicit space specification, so use %sr4 */
-1: fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
- fic,m %r1(%sr4,%r28)
+1: fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
cmpb,COND(<<) %r28, %r25,1b
- fic,m %r1(%sr4,%r28)
+ fic,m %r31(%sr4,%r28)
sync
diff --git a/arch/parisc/kernel/pci.c b/arch/parisc/kernel/pci.c
index 60309051875e..64f2764a8cef 100644
--- a/arch/parisc/kernel/pci.c
+++ b/arch/parisc/kernel/pci.c
@@ -220,6 +220,33 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
}
+int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state, int write_combine)
+{
+ unsigned long prot;
+
+ /*
+ * I/O space can be accessed via normal processor loads and stores on
+ * this platform but for now we elect not to do this and portable
+ * drivers should not do this anyway.
+ */
+ if (mmap_state == pci_mmap_io)
+ return -EINVAL;
+
+ if (write_combine)
+ return -EINVAL;
+
+ /*
+ * Ignore write-combine; for now only return uncached mappings.
+ */
+ prot = pgprot_val(vma->vm_page_prot);
+ prot |= _PAGE_NO_CACHE;
+ vma->vm_page_prot = __pgprot(prot);
+
+ return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+ vma->vm_end - vma->vm_start, vma->vm_page_prot);
+}
+
/*
* A driver is enabling the device. We make sure that all the appropriate
* bits are set to allow the device to operate as the driver is expecting.
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 1c965642068b..505b56c6b9b9 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -47,7 +47,7 @@ pte_t pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((__section__ (".data..vm0.pt
#ifdef CONFIG_DISCONTIGMEM
struct node_map_data node_data[MAX_NUMNODES] __read_mostly;
-unsigned char pfnnid_map[PFNNID_MAP_MAX] __read_mostly;
+signed char pfnnid_map[PFNNID_MAP_MAX] __read_mostly;
#endif
static struct resource data_resource = {
diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 9544cdc0d1af..e79e006eb9ab 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -811,6 +811,70 @@ int iosapic_fixup_irq(void *isi_obj, struct pci_dev *pcidev)
return pcidev->irq;
}
+static struct iosapic_info *first_isi = NULL;
+
+#ifdef CONFIG_64BIT
+int iosapic_serial_irq(int num)
+{
+ struct iosapic_info *isi = first_isi;
+ struct irt_entry *irte = NULL; /* only used if PAT PDC */
+ struct vector_info *vi;
+ int isi_line; /* line used by device */
+
+ /* lookup IRT entry for isi/slot/pin set */
+ irte = &irt_cell[num];
+
+ DBG_IRT("iosapic_serial_irq(): irte %p %x %x %x %x %x %x %x %x\n",
+ irte,
+ irte->entry_type,
+ irte->entry_length,
+ irte->polarity_trigger,
+ irte->src_bus_irq_devno,
+ irte->src_bus_id,
+ irte->src_seg_id,
+ irte->dest_iosapic_intin,
+ (u32) irte->dest_iosapic_addr);
+ isi_line = irte->dest_iosapic_intin;
+
+ /* get vector info for this input line */
+ vi = isi->isi_vector + isi_line;
+ DBG_IRT("iosapic_serial_irq: line %d vi 0x%p\n", isi_line, vi);
+
+ /* If this IRQ line has already been setup, skip it */
+ if (vi->irte)
+ goto out;
+
+ vi->irte = irte;
+
+ /*
+ * Allocate processor IRQ
+ *
+ * XXX/FIXME The txn_alloc_irq() code and related code should be
+ * moved to enable_irq(). That way we only allocate processor IRQ
+ * bits for devices that actually have drivers claiming them.
+ * Right now we assign an IRQ to every PCI device present,
+ * regardless of whether it's used or not.
+ */
+ vi->txn_irq = txn_alloc_irq(8);
+
+ if (vi->txn_irq < 0)
+ panic("I/O sapic: couldn't get TXN IRQ\n");
+
+ /* enable_irq() will use txn_* to program IRdT */
+ vi->txn_addr = txn_alloc_addr(vi->txn_irq);
+ vi->txn_data = txn_alloc_data(vi->txn_irq);
+
+ vi->eoi_addr = isi->addr + IOSAPIC_REG_EOI;
+ vi->eoi_data = cpu_to_le32(vi->txn_data);
+
+ cpu_claim_irq(vi->txn_irq, &iosapic_interrupt_type, vi);
+
+ out:
+
+ return vi->txn_irq;
+}
+#endif
+
/*
** squirrel away the I/O Sapic Version
@@ -877,6 +941,8 @@ void *iosapic_register(unsigned long hpa)
vip->irqline = (unsigned char) cnt;
vip->iosapic = isi;
}
+ if (!first_isi)
+ first_isi = isi;
return isi;
}
diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c
index 097dff9c08ad..bb91b4713ebd 100644
--- a/drivers/tty/serial/8250/8250_gsc.c
+++ b/drivers/tty/serial/8250/8250_gsc.c
@@ -30,6 +30,12 @@ static int __init serial_init_chip(struct parisc_device *dev)
unsigned long address;
int err;
+#ifdef CONFIG_64BIT
+ extern int iosapic_serial_irq(int cellnum);
+ if (!dev->irq && (dev->id.sversion == 0xad))
+ dev->irq = iosapic_serial_irq(dev->mod_index-1);
+#endif
+
if (!dev->irq) {
/* We find some unattached serial ports by walking native
* busses. These should be silently ignored. Otherwise,
@@ -51,7 +57,8 @@ static int __init serial_init_chip(struct parisc_device *dev)
memset(&uart, 0, sizeof(uart));
uart.port.iotype = UPIO_MEM;
/* 7.272727MHz on Lasi. Assumed the same for Dino, Wax and Timi. */
- uart.port.uartclk = 7272727;
+ uart.port.uartclk = (dev->id.sversion != 0xad) ?
+ 7272727 : 1843200;
uart.port.mapbase = address;
uart.port.membase = ioremap_nocache(address, 16);
uart.port.irq = dev->irq;
@@ -73,6 +80,7 @@ static struct parisc_device_id serial_tbl[] = {
{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 },
{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c },
{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d },
+ { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x000ad },
{ 0 }
};