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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 

Pull sparc updates from David Miller:
 "Besides some cleanups the major thing here is supporting relaxed
  ordering PCIe transactions on newer sparc64 machines, from Chris
  Hyser"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: fixing ident and beautifying code
  sparc64: Enable setting "relaxed ordering" in IOMMU mappings
  sparc64: Enable PCI IOMMU version 2 API
  sparc: migrate exception table users off module.h and onto extable.h
This commit is contained in:
Linus Torvalds 2016-10-06 08:12:08 -07:00
parent 82fa407da0 98e98eb6a8
commit f84d9fa868
8 changed files with 71 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/sparc/include/asm/hypervisor.h
View File

@ -1744,6 +1744,7 @@ unsigned long sun4v_vintr_set_target(unsigned long dev_handle,
#define HV_PCI_MAP_ATTR_READ 0x01
#define HV_PCI_MAP_ATTR_WRITE 0x02
#define HV_PCI_MAP_ATTR_RELAXED_ORDER 0x04
#define HV_PCI_DEVICE_BUILD(b,d,f) \
((((b) & 0xff) << 16) | \

2
arch/sparc/kernel/kprobes.c
View File

@ -5,7 +5,7 @@
#include <linux/kernel.h>
#include <linux/kprobes.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/kdebug.h>
#include <linux/slab.h>
#include <linux/context_tracking.h>

48
arch/sparc/kernel/pci_sun4v.c
View File

@ -30,8 +30,19 @@
#define DRIVER_NAME "pci_sun4v"
#define PFX DRIVER_NAME ": "
static unsigned long vpci_major = 1;
static unsigned long vpci_minor = 1;
static unsigned long vpci_major;
static unsigned long vpci_minor;
struct vpci_version {
unsigned long major;
unsigned long minor;
};
/* Ordered from largest major to lowest */
static struct vpci_version vpci_versions[] = {
{ .major = 2, .minor = 0 },
{ .major = 1, .minor = 1 },
};
#define PGLIST_NENTS (PAGE_SIZE / sizeof(u64))
@ -67,6 +78,10 @@ static long iommu_batch_flush(struct iommu_batch *p)
u64 *pglist = p->pglist;
unsigned long npages = p->npages;
/* VPCI maj=1, min=[0,1] only supports read and write */
if (vpci_major < 2)
prot &= (HV_PCI_MAP_ATTR_READ | HV_PCI_MAP_ATTR_WRITE);
while (npages != 0) {
long num;
@ -133,6 +148,7 @@ static void *dma_4v_alloc_coherent(struct device *dev, size_t size,
unsigned long attrs)
{
unsigned long flags, order, first_page, npages, n;
unsigned long prot = 0;
struct iommu *iommu;
struct page *page;
void *ret;
@ -146,6 +162,9 @@ static void *dma_4v_alloc_coherent(struct device *dev, size_t size,
npages = size >> IO_PAGE_SHIFT;
if (attrs & DMA_ATTR_WEAK_ORDERING)
prot = HV_PCI_MAP_ATTR_RELAXED_ORDER;
nid = dev->archdata.numa_node;
page = alloc_pages_node(nid, gfp, order);
if (unlikely(!page))
@ -169,7 +188,7 @@ static void *dma_4v_alloc_coherent(struct device *dev, size_t size,
local_irq_save(flags);
iommu_batch_start(dev,
(HV_PCI_MAP_ATTR_READ |
(HV_PCI_MAP_ATTR_READ | prot |
HV_PCI_MAP_ATTR_WRITE),
entry);
@ -266,6 +285,9 @@ static dma_addr_t dma_4v_map_page(struct device *dev, struct page *page,
if (direction != DMA_TO_DEVICE)
prot |= HV_PCI_MAP_ATTR_WRITE;
if (attrs & DMA_ATTR_WEAK_ORDERING)
prot |= HV_PCI_MAP_ATTR_RELAXED_ORDER;
local_irq_save(flags);
iommu_batch_start(dev, prot, entry);
@ -344,6 +366,9 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
if (direction != DMA_TO_DEVICE)
prot |= HV_PCI_MAP_ATTR_WRITE;
if (attrs & DMA_ATTR_WEAK_ORDERING)
prot |= HV_PCI_MAP_ATTR_RELAXED_ORDER;
outs = s = segstart = &sglist[0];
outcount = 1;
incount = nelems;
@ -907,21 +932,26 @@ static int pci_sun4v_probe(struct platform_device *op)
struct device_node *dp;
struct iommu *iommu;
u32 devhandle;
int i, err;
int i, err = -ENODEV;
dp = op->dev.of_node;
if (!hvapi_negotiated++) {
err = sun4v_hvapi_register(HV_GRP_PCI,
vpci_major,
for (i = 0; i < ARRAY_SIZE(vpci_versions); i++) {
vpci_major = vpci_versions[i].major;
vpci_minor = vpci_versions[i].minor;
err = sun4v_hvapi_register(HV_GRP_PCI, vpci_major,
&vpci_minor);
if (!err)
break;
}
if (err) {
printk(KERN_ERR PFX "Could not register hvapi, "
"err=%d\n", err);
pr_err(PFX "Could not register hvapi, err=%d\n", err);
return err;
}
printk(KERN_INFO PFX "Registered hvapi major[%lu] minor[%lu]\n",
pr_info(PFX "Registered hvapi major[%lu] minor[%lu]\n",
vpci_major, vpci_minor);
dma_ops = &sun4v_dma_ops;

2
arch/sparc/kernel/traps_64.c
View File

@ -8,7 +8,7 @@
* I like traps on v9, :))))
*/
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/sched.h>
#include <linux/linkage.h>
#include <linux/kernel.h>

2
arch/sparc/kernel/unaligned_64.c
View File

@ -11,7 +11,7 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <asm/asi.h>
#include <asm/ptrace.h>
#include <asm/pstate.h>

2
arch/sparc/mm/fault_64.c
View File

@ -14,7 +14,7 @@
#include <linux/mman.h>
#include <linux/signal.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/init.h>
#include <linux/perf_event.h>
#include <linux/interrupt.h>

2
arch/sparc/mm/init_64.c
View File

@ -5,7 +5,7 @@
* Copyright (C) 1997-1999 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>

12
arch/sparc/prom/ranges.c
View File

@ -16,8 +16,7 @@ static struct linux_prom_ranges promlib_obio_ranges[PROMREG_MAX];
static int num_obio_ranges;
/* Adjust register values based upon the ranges parameters. */
static void
prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
static void prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
struct linux_prom_ranges *rangep, int nranges)
{
int regc, rngc;
@ -34,8 +33,7 @@ prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
}
}
static void
prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1,
static void prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1,
struct linux_prom_ranges *ranges2, int nranges2)
{
int rng1c, rng2c;
@ -49,16 +47,14 @@ prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1,
if (rng2c == nranges2) /* oops */
prom_printf("adjust_ranges: Could not find matching bus type...\n");
else if (ranges1[rng1c].ot_parent_base + ranges1[rng1c].or_size > ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size)
ranges1[rng1c].or_size =
ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base;
ranges1[rng1c].or_size = ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base;
ranges1[rng1c].ot_parent_space = ranges2[rng2c].ot_parent_space;
ranges1[rng1c].ot_parent_base += ranges2[rng2c].ot_parent_base;
}
}
/* Apply probed obio ranges to registers passed, if no ranges return. */
void
prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs)
void prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs)
{
if (num_obio_ranges)
prom_adjust_regs(regs, nregs, promlib_obio_ranges, num_obio_ranges);