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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Browse source 
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (36 commits)
  powerpc/gc/wii: Remove get_irq_desc()
  powerpc/gc/wii: hlwd-pic: convert irq_desc.lock to raw_spinlock
  powerpc/gamecube/wii: Fix off-by-one error in ugecon/usbgecko_udbg
  powerpc/mpic: Fix problem that affinity is not updated
  powerpc/mm: Fix stupid bug in subpge protection handling
  powerpc/iseries: use DECLARE_COMPLETION_ONSTACK for non-constant completion
  powerpc: Fix MSI support on U4 bridge PCIe slot
  powerpc: Handle VSX alignment faults correctly in little-endian mode
  powerpc/mm: Fix typo of cpumask_clear_cpu()
  powerpc/mm: Fix hash_utils_64.c compile errors with DEBUG enabled.
  powerpc: Convert BUG() to use unreachable()
  powerpc/pseries: Make declarations of cpu_hotplug_driver_lock() ANSI compatible.
  powerpc/pseries: Don't panic when H_PROD fails during cpu-online.
  powerpc/mm: Fix a WARN_ON() with CONFIG_DEBUG_PAGEALLOC and CONFIG_DEBUG_VM
  powerpc/defconfigs: Set HZ=100 on pseries and ppc64 defconfigs
  powerpc/defconfigs: Disable token ring in powerpc defconfigs
  powerpc/defconfigs: Reduce 64bit vmlinux by making acenic and cramfs modules
  powerpc/pseries: Select XICS and PCI_MSI PSERIES
  powerpc/85xx: Wrong variable returned on error
  powerpc/iseries: Convert to proc_fops
  ...
This commit is contained in:
Linus Torvalds 2009-12-22 14:18:13 -08:00
commit dd508ae2db
37 changed files with 879 additions and 181 deletions
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42
Documentation/powerpc/dts-bindings/fsl/mpic.txt Normal file
View file

@ -0,0 +1,42 @@
* OpenPIC and its interrupt numbers on Freescale's e500/e600 cores
The OpenPIC specification does not specify which interrupt source has to
become which interrupt number. This is up to the software implementation
of the interrupt controller. The only requirement is that every
interrupt source has to have an unique interrupt number / vector number.
To accomplish this the current implementation assigns the number zero to
the first source, the number one to the second source and so on until
all interrupt sources have their unique number.
Usually the assigned vector number equals the interrupt number mentioned
in the documentation for a given core / CPU. This is however not true
for the e500 cores (MPC85XX CPUs) where the documentation distinguishes
between internal and external interrupt sources and starts counting at
zero for both of them.
So what to write for external interrupt source X or internal interrupt
source Y into the device tree? Here is an example:
The memory map for the interrupt controller in the MPC8544[0] shows,
that the first interrupt source starts at 0x5_0000 (PIC Register Address
Map-Interrupt Source Configuration Registers). This source becomes the
number zero therefore:
External interrupt 0 = interrupt number 0
External interrupt 1 = interrupt number 1
External interrupt 2 = interrupt number 2
...
Every interrupt number allocates 0x20 bytes register space. So to get
its number it is sufficient to shift the lower 16bits to right by five.
So for the external interrupt 10 we have:
0x0140 >> 5 = 10
After the external sources, the internal sources follow. The in core I2C
controller on the MPC8544 for instance has the internal source number
27. Oo obtain its interrupt number we take the lower 16bits of its memory
address (0x5_0560) and shift it right:
0x0560 >> 5 = 43
Therefore the I2C device node for the MPC8544 CPU has to have the
interrupt number 43 specified in the device tree.
[0] MPC8544E PowerQUICCTM III, Integrated Host Processor Family Reference Manual
MPC8544ERM Rev. 1 10/2007

52
arch/powerpc/boot/dts/katmai.dts
View file

@ -108,12 +108,19 @@
dcr-reg = <0x00c 0x002>;
};
MQ0: mq {
compatible = "ibm,mq-440spe";
dcr-reg = <0x040 0x020>;
};
plb {
compatible = "ibm,plb-440spe", "ibm,plb-440gp", "ibm,plb4";
#address-cells = <2>;
#size-cells = <1>;
/* addr-child addr-parent size */
ranges = <0x4 0xe0000000 0x4 0xe0000000 0x20000000
ranges = <0x4 0x00100000 0x4 0x00100000 0x00001000
0x4 0x00200000 0x4 0x00200000 0x00000400
0x4 0xe0000000 0x4 0xe0000000 0x20000000
0xc 0x00000000 0xc 0x00000000 0x20000000
0xd 0x00000000 0xd 0x00000000 0x80000000
0xd 0x80000000 0xd 0x80000000 0x80000000
@ -400,6 +407,49 @@
0x0 0x0 0x0 0x3 &UIC3 0xa 0x4 /* swizzled int C */
0x0 0x0 0x0 0x4 &UIC3 0xb 0x4 /* swizzled int D */>;
};
I2O: i2o@400100000 {
compatible = "ibm,i2o-440spe";
reg = <0x00000004 0x00100000 0x100>;
dcr-reg = <0x060 0x020>;
};
DMA0: dma0@400100100 {
compatible = "ibm,dma-440spe";
cell-index = <0>;
reg = <0x00000004 0x00100100 0x100>;
dcr-reg = <0x060 0x020>;
interrupt-parent = <&DMA0>;
interrupts = <0 1>;
#interrupt-cells = <1>;
#address-cells = <0>;
#size-cells = <0>;
interrupt-map = <
0 &UIC0 0x14 4
1 &UIC1 0x16 4>;
};
DMA1: dma1@400100200 {
compatible = "ibm,dma-440spe";
cell-index = <1>;
reg = <0x00000004 0x00100200 0x100>;
dcr-reg = <0x060 0x020>;
interrupt-parent = <&DMA1>;
interrupts = <0 1>;
#interrupt-cells = <1>;
#address-cells = <0>;
#size-cells = <0>;
interrupt-map = <
0 &UIC0 0x16 4
1 &UIC1 0x16 4>;
};
xor-accel@400200000 {
compatible = "amcc,xor-accelerator";
reg = <0x00000004 0x00200000 0x400>;
interrupt-parent = <&UIC1>;
interrupts = <0x1f 4>;
};
};
chosen {

27
arch/powerpc/boot/dts/mpc8315erdb.dts
View file

@ -204,6 +204,7 @@
interrupt-parent = <&ipic>;
tbi-handle = <&tbi0>;
phy-handle = < &phy0 >;
fsl,magic-packet;
mdio@520 {
#address-cells = <1>;
@ -246,6 +247,7 @@
interrupt-parent = <&ipic>;
tbi-handle = <&tbi1>;
phy-handle = < &phy1 >;
fsl,magic-packet;
mdio@520 {
#address-cells = <1>;
@ -309,6 +311,22 @@
interrupt-parent = <&ipic>;
};
gtm1: timer@500 {
compatible = "fsl,mpc8315-gtm", "fsl,gtm";
reg = <0x500 0x100>;
interrupts = <90 8 78 8 84 8 72 8>;
interrupt-parent = <&ipic>;
clock-frequency = <133333333>;
};
timer@600 {
compatible = "fsl,mpc8315-gtm", "fsl,gtm";
reg = <0x600 0x100>;
interrupts = <91 8 79 8 85 8 73 8>;
interrupt-parent = <&ipic>;
clock-frequency = <133333333>;
};
/* IPIC
* interrupts cell = <intr #, sense>
* sense values match linux IORESOURCE_IRQ_* defines:
@ -337,6 +355,15 @@
0x59 0x8>;
interrupt-parent = < &ipic >;
};
pmc: power@b00 {
compatible = "fsl,mpc8315-pmc", "fsl,mpc8313-pmc",
"fsl,mpc8349-pmc";
reg = <0xb00 0x100 0xa00 0x100>;
interrupts = <80 8>;
interrupt-parent = <&ipic>;
fsl,mpc8313-wakeup-timer = <&gtm1>;
};
};
pci0: pci@e0008500 {

82
arch/powerpc/boot/dts/mpc8349emitx.dts
View file

@ -63,6 +63,24 @@
reg = <0x200 0x100>;
};
gpio1: gpio-controller@c00 {
#gpio-cells = <2>;
compatible = "fsl,mpc8349-gpio";
reg = <0xc00 0x100>;
interrupts = <74 0x8>;
interrupt-parent = <&ipic>;
gpio-controller;
};
gpio2: gpio-controller@d00 {
#gpio-cells = <2>;
compatible = "fsl,mpc8349-gpio";
reg = <0xd00 0x100>;
interrupts = <75 0x8>;
interrupt-parent = <&ipic>;
gpio-controller;
};
i2c@3000 {
#address-cells = <1>;
#size-cells = <0>;
@ -72,6 +90,12 @@
interrupts = <14 0x8>;
interrupt-parent = <&ipic>;
dfsrr;
eeprom: at24@50 {
compatible = "st-micro,24c256";
reg = <0x50>;
};
};
i2c@3100 {
@ -91,6 +115,25 @@
interrupt-parent = <&ipic>;
};
pcf1: iexp@38 {
#gpio-cells = <2>;
compatible = "ti,pcf8574a";
reg = <0x38>;
gpio-controller;
};
pcf2: iexp@39 {
#gpio-cells = <2>;
compatible = "ti,pcf8574a";
reg = <0x39>;
gpio-controller;
};
spd: at24@51 {
compatible = "at24,spd";
reg = <0x51>;
};
mcu_pio: mcu@a {
#gpio-cells = <2>;
compatible = "fsl,mc9s08qg8-mpc8349emitx",
@ -275,6 +318,24 @@
reg = <0x700 0x100>;
device_type = "ipic";
};
gpio-leds {
compatible = "gpio-leds";
green {
label = "Green";
gpios = <&pcf1 0 1>;
linux,default-trigger = "heartbeat";
};
yellow {
label = "Yellow";
gpios = <&pcf1 1 1>;
/* linux,default-trigger = "heartbeat"; */
default-state = "on";
};
};
};
pci0: pci@e0008500 {
@ -331,7 +392,26 @@
compatible = "fsl,mpc8349e-localbus",
"fsl,pq2pro-localbus";
reg = <0xe0005000 0xd8>;
ranges = <0x3 0x0 0xf0000000 0x210>;
ranges = <0x0 0x0 0xfe000000 0x1000000 /* flash */
0x1 0x0 0xf8000000 0x20000 /* VSC 7385 */
0x2 0x0 0xf9000000 0x200000 /* exp slot */
0x3 0x0 0xf0000000 0x210>; /* CF slot */
flash@0,0 {
compatible = "cfi-flash";
reg = <0x0 0x0 0x800000>;
bank-width = <2>;
device-width = <1>;
};
flash@0,800000 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "cfi-flash";
reg = <0x0 0x800000 0x800000>;
bank-width = <2>;
device-width = <1>;
};
pata@3,0 {
compatible = "fsl,mpc8349emitx-pata", "ata-generic";

2
arch/powerpc/boot/dts/warp.dts
View file

@ -146,7 +146,7 @@
fpga@2,4000 {
compatible = "pika,fpga-sd";
reg = <0x00000002 0x00004000 0x00000A00>;
reg = <0x00000002 0x00004000 0x00004000>;
};
nor@0,0 {

2
arch/powerpc/boot/ugecon.c
View file

@ -86,7 +86,7 @@ static void ug_putc(char ch)
while (!ug_is_txfifo_ready() && count--)
barrier();
if (count)
if (count >= 0)
ug_raw_putc(ch);
}

6
arch/powerpc/configs/g5_defconfig
View file

@ -757,7 +757,7 @@ CONFIG_SUNGEM=y
# CONFIG_B44 is not set
# CONFIG_ATL2 is not set
CONFIG_NETDEV_1000=y
CONFIG_ACENIC=y
CONFIG_ACENIC=m
CONFIG_ACENIC_OMIT_TIGON_I=y
# CONFIG_DL2K is not set
CONFIG_E1000=y
@ -794,8 +794,8 @@ CONFIG_NETDEV_10000=y
# CONFIG_BNX2X is not set
# CONFIG_QLGE is not set
# CONFIG_SFC is not set
CONFIG_TR=y
CONFIG_IBMOL=y
# CONFIG_TR is not set
# CONFIG_IBMOL is not set
# CONFIG_3C359 is not set
# CONFIG_TMS380TR is not set

4
arch/powerpc/configs/iseries_defconfig
View file

@ -714,8 +714,8 @@ CONFIG_NETDEV_10000=y
# CONFIG_BNX2X is not set
# CONFIG_QLGE is not set
# CONFIG_SFC is not set
CONFIG_TR=y
CONFIG_IBMOL=y
# CONFIG_TR is not set
# CONFIG_IBMOL is not set
# CONFIG_3C359 is not set
# CONFIG_TMS380TR is not set

14
arch/powerpc/configs/ppc64_defconfig
View file

@ -304,11 +304,11 @@ CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
CONFIG_HZ=100
CONFIG_SCHED_HRTICK=y
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
@ -980,7 +980,7 @@ CONFIG_E100=y
# CONFIG_SC92031 is not set
# CONFIG_ATL2 is not set
CONFIG_NETDEV_1000=y
CONFIG_ACENIC=y
CONFIG_ACENIC=m
CONFIG_ACENIC_OMIT_TIGON_I=y
# CONFIG_DL2K is not set
CONFIG_E1000=y
@ -1023,8 +1023,8 @@ CONFIG_PASEMI_MAC=y
# CONFIG_BNX2X is not set
# CONFIG_QLGE is not set
# CONFIG_SFC is not set
CONFIG_TR=y
CONFIG_IBMOL=y
# CONFIG_TR is not set
# CONFIG_IBMOL is not set
# CONFIG_3C359 is not set
# CONFIG_TMS380TR is not set
@ -1863,7 +1863,7 @@ CONFIG_HFSPLUS_FS=m
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
CONFIG_CRAMFS=y
CONFIG_CRAMFS=m
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set

4
arch/powerpc/configs/ppc64e_defconfig
View file

@ -1008,8 +1008,8 @@ CONFIG_IXGB=m
# CONFIG_QLGE is not set
# CONFIG_SFC is not set
# CONFIG_BE2NET is not set
CONFIG_TR=y
CONFIG_IBMOL=y
# CONFIG_TR is not set
# CONFIG_IBMOL is not set
# CONFIG_3C359 is not set
# CONFIG_TMS380TR is not set
CONFIG_WLAN=y

14
arch/powerpc/configs/pseries_defconfig
View file

@ -230,11 +230,11 @@ CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
CONFIG_HZ=100
CONFIG_SCHED_HRTICK=y
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
@ -796,7 +796,7 @@ CONFIG_E100=y
# CONFIG_NET_POCKET is not set
# CONFIG_ATL2 is not set
CONFIG_NETDEV_1000=y
CONFIG_ACENIC=y
CONFIG_ACENIC=m
CONFIG_ACENIC_OMIT_TIGON_I=y
# CONFIG_DL2K is not set
CONFIG_E1000=y
@ -834,8 +834,8 @@ CONFIG_S2IO=m
# CONFIG_BNX2X is not set
# CONFIG_QLGE is not set
# CONFIG_SFC is not set
CONFIG_TR=y
CONFIG_IBMOL=y
# CONFIG_TR is not set
# CONFIG_IBMOL is not set
# CONFIG_3C359 is not set
# CONFIG_TMS380TR is not set
@ -1494,7 +1494,7 @@ CONFIG_CONFIGFS_FS=m
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
CONFIG_CRAMFS=y
CONFIG_CRAMFS=m
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set

2
arch/powerpc/include/asm/bug.h
View file

@ -68,7 +68,7 @@
_EMIT_BUG_ENTRY \
: : "i" (__FILE__), "i" (__LINE__), \
"i" (0), "i" (sizeof(struct bug_entry))); \
for(;;) ; \
unreachable(); \
} while (0)
#define BUG_ON(x) do { \

5
arch/powerpc/include/asm/gpio.h
View file

@ -38,12 +38,9 @@ static inline int gpio_cansleep(unsigned int gpio)
return __gpio_cansleep(gpio);
}
/*
* Not implemented, yet.
*/
static inline int gpio_to_irq(unsigned int gpio)
{
return -ENOSYS;
return __gpio_to_irq(gpio);
}
static inline int irq_to_gpio(unsigned int irq)

63
arch/powerpc/kernel/align.c
View file

@ -642,10 +642,14 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
*/
static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
unsigned int areg, struct pt_regs *regs,
unsigned int flags, unsigned int length)
unsigned int flags, unsigned int length,
unsigned int elsize)
{
char *ptr;
unsigned long *lptr;
int ret = 0;
int sw = 0;
int i, j;
flush_vsx_to_thread(current);
@ -654,19 +658,35 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
else
ptr = (char *) &current->thread.vr[reg - 32];
if (flags & ST)
ret = __copy_to_user(addr, ptr, length);
else {
if (flags & SPLT){
ret = __copy_from_user(ptr, addr, length);
ptr += length;
lptr = (unsigned long *) ptr;
if (flags & SW)
sw = elsize-1;
for (j = 0; j < length; j += elsize) {
for (i = 0; i < elsize; ++i) {
if (flags & ST)
ret |= __put_user(ptr[i^sw], addr + i);
else
ret |= __get_user(ptr[i^sw], addr + i);
}
ret |= __copy_from_user(ptr, addr, length);
ptr += elsize;
addr += elsize;
}
if (flags & U)
regs->gpr[areg] = regs->dar;
if (ret)
if (!ret) {
if (flags & U)
regs->gpr[areg] = regs->dar;
/* Splat load copies the same data to top and bottom 8 bytes */
if (flags & SPLT)
lptr[1] = lptr[0];
/* For 8 byte loads, zero the top 8 bytes */
else if (!(flags & ST) && (8 == length))
lptr[1] = 0;
} else
return -EFAULT;
return 1;
}
#endif
@ -767,16 +787,25 @@ int fix_alignment(struct pt_regs *regs)
#ifdef CONFIG_VSX
if ((instruction & 0xfc00003e) == 0x7c000018) {
/* Additional register addressing bit (64 VSX vs 32 FPR/GPR */
unsigned int elsize;
/* Additional register addressing bit (64 VSX vs 32 FPR/GPR) */
reg |= (instruction & 0x1) << 5;
/* Simple inline decoder instead of a table */
/* VSX has only 8 and 16 byte memory accesses */
nb = 8;
if (instruction & 0x200)
nb = 16;
else if (instruction & 0x080)
nb = 8;
else
nb = 4;
/* Vector stores in little-endian mode swap individual
elements, so process them separately */
elsize = 4;
if (instruction & 0x80)
elsize = 8;
flags = 0;
if (regs->msr & MSR_LE)
flags |= SW;
if (instruction & 0x100)
flags |= ST;
if (instruction & 0x040)
@ -787,7 +816,7 @@ int fix_alignment(struct pt_regs *regs)
nb = 8;
}
PPC_WARN_ALIGNMENT(vsx, regs);
return emulate_vsx(addr, reg, areg, regs, flags, nb);
return emulate_vsx(addr, reg, areg, regs, flags, nb, elsize);
}
#endif
/* A size of 0 indicates an instruction we don't support, with

12
arch/powerpc/mm/hash_utils_64.c
View file

@ -340,7 +340,7 @@ static int __init htab_dt_scan_page_sizes(unsigned long node,
else
def->tlbiel = 0;
DBG(" %d: shift=%02x, sllp=%04x, avpnm=%08x, "
DBG(" %d: shift=%02x, sllp=%04lx, avpnm=%08lx, "
"tlbiel=%d, penc=%d\n",
idx, shift, def->sllp, def->avpnm, def->tlbiel,
def->penc);
@ -663,7 +663,7 @@ static void __init htab_initialize(void)
base = (unsigned long)__va(lmb.memory.region[i].base);
size = lmb.memory.region[i].size;
DBG("creating mapping for region: %lx..%lx (prot: %x)\n",
DBG("creating mapping for region: %lx..%lx (prot: %lx)\n",
base, size, prot);
#ifdef CONFIG_U3_DART
@ -879,7 +879,7 @@ static inline int subpage_protection(struct mm_struct *mm, unsigned long ea)
*/
int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
{
void *pgdir;
pgd_t *pgdir;
unsigned long vsid;
struct mm_struct *mm;
pte_t *ptep;
@ -1025,7 +1025,7 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
else
#endif /* CONFIG_PPC_HAS_HASH_64K */
{
int spp = subpage_protection(pgdir, ea);
int spp = subpage_protection(mm, ea);
if (access & spp)
rc = -2;
else
@ -1115,7 +1115,7 @@ void flush_hash_page(unsigned long va, real_pte_t pte, int psize, int ssize,
{
unsigned long hash, index, shift, hidx, slot;
DBG_LOW("flush_hash_page(va=%016x)\n", va);
DBG_LOW("flush_hash_page(va=%016lx)\n", va);
pte_iterate_hashed_subpages(pte, psize, va, index, shift) {
hash = hpt_hash(va, shift, ssize);
hidx = __rpte_to_hidx(pte, index);
@ -1123,7 +1123,7 @@ void flush_hash_page(unsigned long va, real_pte_t pte, int psize, int ssize,
hash = ~hash;
slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
slot += hidx & _PTEIDX_GROUP_IX;
DBG_LOW(" sub %d: hash=%x, hidx=%x\n", index, slot, hidx);
DBG_LOW(" sub %ld: hash=%lx, hidx=%lx\n", index, slot, hidx);
ppc_md.hpte_invalidate(slot, va, psize, ssize, local);
} pte_iterate_hashed_end();
}

2
arch/powerpc/mm/mmu_context_nohash.c
View file

@ -353,7 +353,7 @@ static int __cpuinit mmu_context_cpu_notify(struct notifier_block *self,
read_lock(&tasklist_lock);
for_each_process(p) {
if (p->mm)
cpu_mask_clear_cpu(cpu, mm_cpumask(p->mm));
cpumask_clear_cpu(cpu, mm_cpumask(p->mm));
}
read_unlock(&tasklist_lock);
break;

2
arch/powerpc/mm/pgtable_32.c
View file

@ -382,7 +382,7 @@ static int __change_page_attr(struct page *page, pgprot_t prot)
return 0;
if (!get_pteptr(&init_mm, address, &kpte, &kpmd))
return -EINVAL;
set_pte_at(&init_mm, address, kpte, mk_pte(page, prot));
__set_pte_at(&init_mm, address, kpte, mk_pte(page, prot), 0);
wmb();
#ifdef CONFIG_PPC_STD_MMU
flush_hash_pages(0, address, pmd_val(*kpmd), 1);

52
arch/powerpc/platforms/83xx/suspend.c
View file

@ -32,6 +32,7 @@
#define PMCCR1_NEXT_STATE 0x0C /* Next state for power management */
#define PMCCR1_NEXT_STATE_SHIFT 2
#define PMCCR1_CURR_STATE 0x03 /* Current state for power management*/
#define IMMR_SYSCR_OFFSET 0x100
#define IMMR_RCW_OFFSET 0x900
#define RCW_PCI_HOST 0x80000000
@ -78,6 +79,22 @@ struct mpc83xx_clock {
u32 sccr;
};
struct mpc83xx_syscr {
__be32 sgprl;
__be32 sgprh;
__be32 spridr;
__be32 :32;
__be32 spcr;
__be32 sicrl;
__be32 sicrh;
};
struct mpc83xx_saved {
u32 sicrl;
u32 sicrh;
u32 sccr;
};
struct pmc_type {
int has_deep_sleep;
};
@ -87,6 +104,8 @@ static int has_deep_sleep, deep_sleeping;
static int pmc_irq;
static struct mpc83xx_pmc __iomem *pmc_regs;
static struct mpc83xx_clock __iomem *clock_regs;
static struct mpc83xx_syscr __iomem *syscr_regs;
static struct mpc83xx_saved saved_regs;
static int is_pci_agent, wake_from_pci;
static phys_addr_t immrbase;
static int pci_pm_state;
@ -137,6 +156,20 @@ static irqreturn_t pmc_irq_handler(int irq, void *dev_id)
return ret;
}
static void mpc83xx_suspend_restore_regs(void)
{
out_be32(&syscr_regs->sicrl, saved_regs.sicrl);
out_be32(&syscr_regs->sicrh, saved_regs.sicrh);
out_be32(&clock_regs->sccr, saved_regs.sccr);
}
static void mpc83xx_suspend_save_regs(void)
{
saved_regs.sicrl = in_be32(&syscr_regs->sicrl);
saved_regs.sicrh = in_be32(&syscr_regs->sicrh);
saved_regs.sccr = in_be32(&clock_regs->sccr);
}
static int mpc83xx_suspend_enter(suspend_state_t state)
{
int ret = -EAGAIN;
@ -166,6 +199,8 @@ static int mpc83xx_suspend_enter(suspend_state_t state)
*/
if (deep_sleeping) {
mpc83xx_suspend_save_regs();
out_be32(&pmc_regs->mask, PMCER_ALL);
out_be32(&pmc_regs->config1,
@ -179,6 +214,8 @@ static int mpc83xx_suspend_enter(suspend_state_t state)
in_be32(&pmc_regs->config1) & ~PMCCR1_POWER_OFF);
out_be32(&pmc_regs->mask, PMCER_PMCI);
mpc83xx_suspend_restore_regs();
} else {
out_be32(&pmc_regs->mask, PMCER_PMCI);
@ -194,7 +231,7 @@ out:
return ret;
}
static void mpc83xx_suspend_finish(void)
static void mpc83xx_suspend_end(void)
{
deep_sleeping = 0;
}
@ -278,7 +315,7 @@ static struct platform_suspend_ops mpc83xx_suspend_ops = {
.valid = mpc83xx_suspend_valid,
.begin = mpc83xx_suspend_begin,
.enter = mpc83xx_suspend_enter,
.finish = mpc83xx_suspend_finish,
.end = mpc83xx_suspend_end,
};
static int pmc_probe(struct of_device *ofdev,
@ -333,12 +370,23 @@ static int pmc_probe(struct of_device *ofdev,
goto out_pmc;
}
if (has_deep_sleep) {
syscr_regs = ioremap(immrbase + IMMR_SYSCR_OFFSET,
sizeof(*syscr_regs));
if (!syscr_regs) {
ret = -ENOMEM;
goto out_syscr;
}
}
if (is_pci_agent)
mpc83xx_set_agent();
suspend_set_ops(&mpc83xx_suspend_ops);
return 0;
out_syscr:
iounmap(clock_regs);
out_pmc:
iounmap(pmc_regs);
out:

2
arch/powerpc/platforms/85xx/mpc85xx_mds.c
View file

@ -86,7 +86,7 @@ static int mpc8568_fixup_125_clock(struct phy_device *phydev)
scr = phy_read(phydev, MV88E1111_SCR);
if (scr < 0)
return err;
return scr;
err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008);

2
arch/powerpc/platforms/embedded6xx/flipper-pic.c
View file

@ -102,7 +102,7 @@ static int flipper_pic_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hwirq)
{
set_irq_chip_data(virq, h->host_data);
get_irq_desc(virq)->status |= IRQ_LEVEL;
irq_to_desc(virq)->status |= IRQ_LEVEL;
set_irq_chip_and_handler(virq, &flipper_pic, handle_level_irq);
return 0;
}

10
arch/powerpc/platforms/embedded6xx/hlwd-pic.c
View file

@ -95,7 +95,7 @@ static int hlwd_pic_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hwirq)
{
set_irq_chip_data(virq, h->host_data);
get_irq_desc(virq)->status |= IRQ_LEVEL;
irq_to_desc(virq)->status |= IRQ_LEVEL;
set_irq_chip_and_handler(virq, &hlwd_pic, handle_level_irq);
return 0;
}
@ -132,9 +132,9 @@ static void hlwd_pic_irq_cascade(unsigned int cascade_virq,
struct irq_host *irq_host = get_irq_data(cascade_virq);
unsigned int virq;
spin_lock(&desc->lock);
raw_spin_lock(&desc->lock);
desc->chip->mask(cascade_virq); /* IRQ_LEVEL */
spin_unlock(&desc->lock);
raw_spin_unlock(&desc->lock);
virq = __hlwd_pic_get_irq(irq_host);
if (virq != NO_IRQ)
@ -142,11 +142,11 @@ static void hlwd_pic_irq_cascade(unsigned int cascade_virq,
else
pr_err("spurious interrupt!\n");
spin_lock(&desc->lock);
raw_spin_lock(&desc->lock);
desc->chip->ack(cascade_virq); /* IRQ_LEVEL */
if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask)
desc->chip->unmask(cascade_virq);
spin_unlock(&desc->lock);
raw_spin_unlock(&desc->lock);
}
/*

2
arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
View file

@ -120,7 +120,7 @@ static void ug_putc(char ch)
while (!ug_is_txfifo_ready() && count--)
barrier();
if (count)
if (count >= 0)
ug_raw_putc(ch);
}

151
arch/powerpc/platforms/iseries/mf.c
View file

@ -855,59 +855,58 @@ static int mf_get_boot_rtc(struct rtc_time *tm)
}
#ifdef CONFIG_PROC_FS
static int proc_mf_dump_cmdline(char *page, char **start, off_t off,
int count, int *eof, void *data)
static int mf_cmdline_proc_show(struct seq_file *m, void *v)
{
int len;
char *p;
char *page, *p;
struct vsp_cmd_data vsp_cmd;
int rc;
dma_addr_t dma_addr;
/* The HV appears to return no more than 256 bytes of command line */
if (off >= 256)
return 0;
if ((off + count) > 256)
count = 256 - off;
dma_addr = iseries_hv_map(page, off + count, DMA_FROM_DEVICE);
if (dma_addr == DMA_ERROR_CODE)
page = kmalloc(256, GFP_KERNEL);
if (!page)
return -ENOMEM;
memset(page, 0, off + count);
dma_addr = iseries_hv_map(page, 256, DMA_FROM_DEVICE);
if (dma_addr == DMA_ERROR_CODE) {
kfree(page);
return -ENOMEM;
}
memset(page, 0, 256);
memset(&vsp_cmd, 0, sizeof(vsp_cmd));
vsp_cmd.cmd = 33;
vsp_cmd.sub_data.kern.token = dma_addr;
vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
vsp_cmd.sub_data.kern.side = (u64)data;
vsp_cmd.sub_data.kern.length = off + count;
vsp_cmd.sub_data.kern.side = (u64)m->private;
vsp_cmd.sub_data.kern.length = 256;
mb();
rc = signal_vsp_instruction(&vsp_cmd);
iseries_hv_unmap(dma_addr, off + count, DMA_FROM_DEVICE);
if (rc)
iseries_hv_unmap(dma_addr, 256, DMA_FROM_DEVICE);
if (rc) {
kfree(page);
return rc;
if (vsp_cmd.result_code != 0)
}
if (vsp_cmd.result_code != 0) {
kfree(page);
return -ENOMEM;
}
p = page;
len = 0;
while (len < (off + count)) {
if ((*p == '\0') || (*p == '\n')) {
if (*p == '\0')
*p = '\n';
p++;
len++;
*eof = 1;
while (p - page < 256) {
if (*p == '\0' || *p == '\n') {
*p = '\n';
break;
}
p++;
len++;
}
if (len < off) {
*eof = 1;
len = 0;
}
return len;
seq_write(m, page, p - page);
kfree(page);
return 0;
}
static int mf_cmdline_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, mf_cmdline_proc_show, PDE(inode)->data);
}
#if 0
@ -962,10 +961,8 @@ static int proc_mf_dump_vmlinux(char *page, char **start, off_t off,
}
#endif
static int proc_mf_dump_side(char *page, char **start, off_t off,
int count, int *eof, void *data)
static int mf_side_proc_show(struct seq_file *m, void *v)
{
int len;
char mf_current_side = ' ';
struct vsp_cmd_data vsp_cmd;
@ -989,21 +986,17 @@ static int proc_mf_dump_side(char *page, char **start, off_t off,
}
}
len = sprintf(page, "%c\n", mf_current_side);
if (len <= (off + count))
*eof = 1;
*start = page + off;
len -= off;
if (len > count)
len = count;
if (len < 0)
len = 0;
return len;
seq_printf(m, "%c\n", mf_current_side);
return 0;
}
static int proc_mf_change_side(struct file *file, const char __user *buffer,
unsigned long count, void *data)
static int mf_side_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, mf_side_proc_show, NULL);
}
static ssize_t mf_side_proc_write(struct file *file, const char __user *buffer,
size_t count, loff_t *pos)
{
char side;
u64 newSide;
@ -1041,6 +1034,15 @@ static int proc_mf_change_side(struct file *file, const char __user *buffer,
return count;
}
static const struct file_operations mf_side_proc_fops = {
.owner = THIS_MODULE,
.open = mf_side_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = mf_side_proc_write,
};
#if 0
static void mf_getSrcHistory(char *buffer, int size)
{
@ -1087,8 +1089,7 @@ static void mf_getSrcHistory(char *buffer, int size)
}
#endif
static int proc_mf_dump_src(char *page, char **start, off_t off,
int count, int *eof, void *data)
static int mf_src_proc_show(struct seq_file *m, void *v)
{
#if 0
int len;
@ -1109,8 +1110,13 @@ static int proc_mf_dump_src(char *page, char **start, off_t off,
#endif
}
static int proc_mf_change_src(struct file *file, const char __user *buffer,
unsigned long count, void *data)
static int mf_src_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, mf_src_proc_show, NULL);
}
static ssize_t mf_src_proc_write(struct file *file, const char __user *buffer,
size_t count, loff_t *pos)
{
char stkbuf[10];
@ -1135,9 +1141,19 @@ static int proc_mf_change_src(struct file *file, const char __user *buffer,
return count;
}
static int proc_mf_change_cmdline(struct file *file, const char __user *buffer,
unsigned long count, void *data)
static const struct file_operations mf_src_proc_fops = {
.owner = THIS_MODULE,
.open = mf_src_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = mf_src_proc_write,
};
static ssize_t mf_cmdline_proc_write(struct file *file, const char __user *buffer,
size_t count, loff_t *pos)
{
void *data = PDE(file->f_path.dentry->d_inode)->data;
struct vsp_cmd_data vsp_cmd;
dma_addr_t dma_addr;
char *page;
@ -1172,6 +1188,15 @@ out:
return ret;
}
static const struct file_operations mf_cmdline_proc_fops = {
.owner = THIS_MODULE,
.open = mf_cmdline_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = mf_cmdline_proc_write,
};
static ssize_t proc_mf_change_vmlinux(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
@ -1246,12 +1271,10 @@ static int __init mf_proc_init(void)
if (!mf)
return 1;
ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf);
ent = proc_create_data("cmdline", S_IRUSR|S_IWUSR, mf,
&mf_cmdline_proc_fops, (void *)(long)i);
if (!ent)
return 1;
ent->data = (void *)(long)i;
ent->read_proc = proc_mf_dump_cmdline;
ent->write_proc = proc_mf_change_cmdline;
if (i == 3) /* no vmlinux entry for 'D' */
continue;
@ -1263,19 +1286,15 @@ static int __init mf_proc_init(void)
return 1;
}
ent = create_proc_entry("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
ent = proc_create("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root,
&mf_side_proc_fops);
if (!ent)
return 1;
ent->data = (void *)0;
ent->read_proc = proc_mf_dump_side;
ent->write_proc = proc_mf_change_side;
ent = create_proc_entry("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
ent = proc_create("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root,
&mf_src_proc_fops);
if (!ent)
return 1;
ent->data = (void *)0;
ent->read_proc = proc_mf_dump_src;
ent->write_proc = proc_mf_change_src;
return 0;
}

2
arch/powerpc/platforms/iseries/viopath.c
View file

@ -116,7 +116,7 @@ static int proc_viopath_show(struct seq_file *m, void *v)
u16 vlanMap;
dma_addr_t handle;
HvLpEvent_Rc hvrc;
DECLARE_COMPLETION(done);
DECLARE_COMPLETION_ONSTACK(done);
struct device_node *node;
const char *sysid;

2
arch/powerpc/platforms/pseries/Kconfig
View file

@ -2,6 +2,8 @@ config PPC_PSERIES
depends on PPC64 && PPC_BOOK3S
bool "IBM pSeries & new (POWER5-based) iSeries"
select MPIC
select PCI_MSI
select XICS
select PPC_I8259
select PPC_RTAS
select PPC_RTAS_DAEMON

254
arch/powerpc/platforms/pseries/cmm.c
View file

@ -38,19 +38,28 @@
#include <asm/mmu.h>
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
#include <linux/memory.h>
#include "plpar_wrappers.h"
#define CMM_DRIVER_VERSION "1.0.0"
#define CMM_DEFAULT_DELAY 1
#define CMM_HOTPLUG_DELAY 5
#define CMM_DEBUG 0
#define CMM_DISABLE 0
#define CMM_OOM_KB 1024
#define CMM_MIN_MEM_MB 256
#define KB2PAGES(_p) ((_p)>>(PAGE_SHIFT-10))
#define PAGES2KB(_p) ((_p)<<(PAGE_SHIFT-10))
/*
* The priority level tries to ensure that this notifier is called as
* late as possible to reduce thrashing in the shared memory pool.
*/
#define CMM_MEM_HOTPLUG_PRI 1
#define CMM_MEM_ISOLATE_PRI 15
static unsigned int delay = CMM_DEFAULT_DELAY;
static unsigned int hotplug_delay = CMM_HOTPLUG_DELAY;
static unsigned int oom_kb = CMM_OOM_KB;
static unsigned int cmm_debug = CMM_DEBUG;
static unsigned int cmm_disabled = CMM_DISABLE;
@ -65,6 +74,10 @@ MODULE_VERSION(CMM_DRIVER_VERSION);
module_param_named(delay, delay, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(delay, "Delay (in seconds) between polls to query hypervisor paging requests. "
"[Default=" __stringify(CMM_DEFAULT_DELAY) "]");
module_param_named(hotplug_delay, hotplug_delay, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(delay, "Delay (in seconds) after memory hotplug remove "
"before loaning resumes. "
"[Default=" __stringify(CMM_HOTPLUG_DELAY) "]");
module_param_named(oom_kb, oom_kb, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(oom_kb, "Amount of memory in kb to free on OOM. "
"[Default=" __stringify(CMM_OOM_KB) "]");
@ -92,6 +105,9 @@ static unsigned long oom_freed_pages;
static struct cmm_page_array *cmm_page_list;
static DEFINE_SPINLOCK(cmm_lock);
static DEFINE_MUTEX(hotplug_mutex);
static int hotplug_occurred; /* protected by the hotplug mutex */
static struct task_struct *cmm_thread_ptr;
/**
@ -110,6 +126,17 @@ static long cmm_alloc_pages(long nr)
cmm_dbg("Begin request for %ld pages\n", nr);
while (nr) {
/* Exit if a hotplug operation is in progress or occurred */
if (mutex_trylock(&hotplug_mutex)) {
if (hotplug_occurred) {
mutex_unlock(&hotplug_mutex);
break;
}
mutex_unlock(&hotplug_mutex);
} else {
break;
}
addr = __get_free_page(GFP_NOIO | __GFP_NOWARN |
__GFP_NORETRY | __GFP_NOMEMALLOC);
if (!addr)
@ -119,8 +146,9 @@ static long cmm_alloc_pages(long nr)
if (!pa || pa->index >= CMM_NR_PAGES) {
/* Need a new page for the page list. */
spin_unlock(&cmm_lock);
npa = (struct cmm_page_array *)__get_free_page(GFP_NOIO | __GFP_NOWARN |
__GFP_NORETRY | __GFP_NOMEMALLOC);
npa = (struct cmm_page_array *)__get_free_page(
GFP_NOIO | __GFP_NOWARN |
__GFP_NORETRY | __GFP_NOMEMALLOC);
if (!npa) {
pr_info("%s: Can not allocate new page list\n", __func__);
free_page(addr);
@ -282,9 +310,28 @@ static int cmm_thread(void *dummy)
while (1) {
timeleft = msleep_interruptible(delay * 1000);
if (kthread_should_stop() || timeleft) {
loaned_pages_target = loaned_pages;
if (kthread_should_stop() || timeleft)
break;
if (mutex_trylock(&hotplug_mutex)) {
if (hotplug_occurred) {
hotplug_occurred = 0;
mutex_unlock(&hotplug_mutex);
cmm_dbg("Hotplug operation has occurred, "
"loaning activity suspended "
"for %d seconds.\n",
hotplug_delay);
timeleft = msleep_interruptible(hotplug_delay *
1000);
if (kthread_should_stop() || timeleft)
break;
continue;
}
mutex_unlock(&hotplug_mutex);
} else {
cmm_dbg("Hotplug operation in progress, activity "
"suspended\n");
continue;
}
cmm_get_mpp();
@ -413,6 +460,193 @@ static struct notifier_block cmm_reboot_nb = {
.notifier_call = cmm_reboot_notifier,
};
/**
* cmm_count_pages - Count the number of pages loaned in a particular range.
*
* @arg: memory_isolate_notify structure with address range and count
*
* Return value:
* 0 on success
**/
static unsigned long cmm_count_pages(void *arg)
{
struct memory_isolate_notify *marg = arg;
struct cmm_page_array *pa;
unsigned long start = (unsigned long)pfn_to_kaddr(marg->start_pfn);
unsigned long end = start + (marg->nr_pages << PAGE_SHIFT);
unsigned long idx;
spin_lock(&cmm_lock);
pa = cmm_page_list;
while (pa) {
if ((unsigned long)pa >= start && (unsigned long)pa < end)
marg->pages_found++;
for (idx = 0; idx < pa->index; idx++)
if (pa->page[idx] >= start && pa->page[idx] < end)
marg->pages_found++;
pa = pa->next;
}
spin_unlock(&cmm_lock);
return 0;
}
/**
* cmm_memory_isolate_cb - Handle memory isolation notifier calls
* @self: notifier block struct
* @action: action to take
* @arg: struct memory_isolate_notify data for handler
*
* Return value:
* NOTIFY_OK or notifier error based on subfunction return value
**/
static int cmm_memory_isolate_cb(struct notifier_block *self,
unsigned long action, void *arg)
{
int ret = 0;
if (action == MEM_ISOLATE_COUNT)
ret = cmm_count_pages(arg);
if (ret)
ret = notifier_from_errno(ret);
else
ret = NOTIFY_OK;
return ret;
}
static struct notifier_block cmm_mem_isolate_nb = {
.notifier_call = cmm_memory_isolate_cb,
.priority = CMM_MEM_ISOLATE_PRI
};
/**
* cmm_mem_going_offline - Unloan pages where memory is to be removed
* @arg: memory_notify structure with page range to be offlined
*
* Return value:
* 0 on success
**/
static int cmm_mem_going_offline(void *arg)
{
struct memory_notify *marg = arg;
unsigned long start_page = (unsigned long)pfn_to_kaddr(marg->start_pfn);
unsigned long end_page = start_page + (marg->nr_pages << PAGE_SHIFT);
struct cmm_page_array *pa_curr, *pa_last, *npa;
unsigned long idx;
unsigned long freed = 0;
cmm_dbg("Memory going offline, searching 0x%lx (%ld pages).\n",
start_page, marg->nr_pages);
spin_lock(&cmm_lock);
/* Search the page list for pages in the range to be offlined */
pa_last = pa_curr = cmm_page_list;
while (pa_curr) {
for (idx = (pa_curr->index - 1); (idx + 1) > 0; idx--) {
if ((pa_curr->page[idx] < start_page) ||
(pa_curr->page[idx] >= end_page))
continue;
plpar_page_set_active(__pa(pa_curr->page[idx]));
free_page(pa_curr->page[idx]);
freed++;
loaned_pages--;
totalram_pages++;
pa_curr->page[idx] = pa_last->page[--pa_last->index];
if (pa_last->index == 0) {
if (pa_curr == pa_last)
pa_curr = pa_last->next;
pa_last = pa_last->next;
free_page((unsigned long)cmm_page_list);
cmm_page_list = pa_last;
continue;
}
}
pa_curr = pa_curr->next;
}
/* Search for page list structures in the range to be offlined */
pa_last = NULL;
pa_curr = cmm_page_list;
while (pa_curr) {
if (((unsigned long)pa_curr >= start_page) &&
((unsigned long)pa_curr < end_page)) {
npa = (struct cmm_page_array *)__get_free_page(
GFP_NOIO | __GFP_NOWARN |
__GFP_NORETRY | __GFP_NOMEMALLOC);
if (!npa) {
spin_unlock(&cmm_lock);
cmm_dbg("Failed to allocate memory for list "
"management. Memory hotplug "
"failed.\n");
return ENOMEM;
}
memcpy(npa, pa_curr, PAGE_SIZE);
if (pa_curr == cmm_page_list)
cmm_page_list = npa;
if (pa_last)
pa_last->next = npa;
free_page((unsigned long) pa_curr);
freed++;
pa_curr = npa;
}
pa_last = pa_curr;
pa_curr = pa_curr->next;
}
spin_unlock(&cmm_lock);
cmm_dbg("Released %ld pages in the search range.\n", freed);
return 0;
}
/**
* cmm_memory_cb - Handle memory hotplug notifier calls
* @self: notifier block struct
* @action: action to take
* @arg: struct memory_notify data for handler
*
* Return value:
* NOTIFY_OK or notifier error based on subfunction return value
*
**/
static int cmm_memory_cb(struct notifier_block *self,
unsigned long action, void *arg)
{
int ret = 0;
switch (action) {
case MEM_GOING_OFFLINE:
mutex_lock(&hotplug_mutex);
hotplug_occurred = 1;
ret = cmm_mem_going_offline(arg);
break;
case MEM_OFFLINE:
case MEM_CANCEL_OFFLINE:
mutex_unlock(&hotplug_mutex);
cmm_dbg("Memory offline operation complete.\n");
break;
case MEM_GOING_ONLINE:
case MEM_ONLINE:
case MEM_CANCEL_ONLINE:
break;
}
if (ret)
ret = notifier_from_errno(ret);
else
ret = NOTIFY_OK;
return ret;
}
static struct notifier_block cmm_mem_nb = {
.notifier_call = cmm_memory_cb,
.priority = CMM_MEM_HOTPLUG_PRI
};
/**
* cmm_init - Module initialization
*
@ -435,18 +669,24 @@ static int cmm_init(void)
if ((rc = cmm_sysfs_register(&cmm_sysdev)))
goto out_reboot_notifier;
if (register_memory_notifier(&cmm_mem_nb) ||
register_memory_isolate_notifier(&cmm_mem_isolate_nb))
goto out_unregister_notifier;
if (cmm_disabled)
return rc;
cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
if (IS_ERR(cmm_thread_ptr)) {
rc = PTR_ERR(cmm_thread_ptr);
goto out_unregister_sysfs;
goto out_unregister_notifier;
}
return rc;
out_unregister_sysfs:
out_unregister_notifier:
unregister_memory_notifier(&cmm_mem_nb);
unregister_memory_isolate_notifier(&cmm_mem_isolate_nb);
cmm_unregister_sysfs(&cmm_sysdev);
out_reboot_notifier:
unregister_reboot_notifier(&cmm_reboot_nb);
@ -467,6 +707,8 @@ static void cmm_exit(void)
kthread_stop(cmm_thread_ptr);
unregister_oom_notifier(&cmm_oom_nb);
unregister_reboot_notifier(&cmm_reboot_nb);
unregister_memory_notifier(&cmm_mem_nb);
unregister_memory_isolate_notifier(&cmm_mem_isolate_nb);
cmm_free_pages(loaned_pages);
cmm_unregister_sysfs(&cmm_sysdev);
}

6
arch/powerpc/platforms/pseries/dlpar.c
View file

@ -346,12 +346,14 @@ int dlpar_release_drc(u32 drc_index)
static DEFINE_MUTEX(pseries_cpu_hotplug_mutex);
void cpu_hotplug_driver_lock()
void cpu_hotplug_driver_lock(void)
__acquires(pseries_cpu_hotplug_mutex)
{
mutex_lock(&pseries_cpu_hotplug_mutex);
}
void cpu_hotplug_driver_unlock()
void cpu_hotplug_driver_unlock(void)
__releases(pseries_cpu_hotplug_mutex)
{
mutex_unlock(&pseries_cpu_hotplug_mutex);
}

4
arch/powerpc/platforms/pseries/smp.c
View file

@ -144,8 +144,8 @@ static void __devinit smp_pSeries_kick_cpu(int nr)
hcpuid = get_hard_smp_processor_id(nr);
rc = plpar_hcall_norets(H_PROD, hcpuid);
if (rc != H_SUCCESS)
panic("Error: Prod to wake up processor %d Ret= %ld\n",
nr, rc);
printk(KERN_ERR "Error: Prod to wake up processor %d\
Ret= %ld\n", nr, rc);
}
}

26
arch/powerpc/sysdev/cpm2_pic.c
View file

@ -143,13 +143,23 @@ static int cpm2_set_irq_type(unsigned int virq, unsigned int flow_type)
struct irq_desc *desc = irq_to_desc(virq);
unsigned int vold, vnew, edibit;
if (flow_type == IRQ_TYPE_NONE)
flow_type = IRQ_TYPE_LEVEL_LOW;
/* Port C interrupts are either IRQ_TYPE_EDGE_FALLING or
* IRQ_TYPE_EDGE_BOTH (default). All others are IRQ_TYPE_EDGE_FALLING
* or IRQ_TYPE_LEVEL_LOW (default)
*/
if (src >= CPM2_IRQ_PORTC15 && src <= CPM2_IRQ_PORTC0) {
if (flow_type == IRQ_TYPE_NONE)
flow_type = IRQ_TYPE_EDGE_BOTH;
if (flow_type & IRQ_TYPE_EDGE_RISING) {
printk(KERN_ERR "CPM2 PIC: sense type 0x%x not supported\n",
flow_type);
return -EINVAL;
if (flow_type != IRQ_TYPE_EDGE_BOTH &&
flow_type != IRQ_TYPE_EDGE_FALLING)
goto err_sense;
} else {
if (flow_type == IRQ_TYPE_NONE)
flow_type = IRQ_TYPE_LEVEL_LOW;
if (flow_type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_HIGH))
goto err_sense;
}
desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
@ -181,6 +191,10 @@ static int cpm2_set_irq_type(unsigned int virq, unsigned int flow_type)
if (vold != vnew)
out_be32(&cpm2_intctl->ic_siexr, vnew);
return 0;
err_sense:
pr_err("CPM2 PIC: sense type 0x%x not supported\n", flow_type);
return -EINVAL;
}
static struct irq_chip cpm2_pic = {

8
arch/powerpc/sysdev/fsl_pci.c
View file

@ -464,8 +464,7 @@ static void __iomem *mpc83xx_pcie_remap_cfg(struct pci_bus *bus,
{
struct pci_controller *hose = pci_bus_to_host(bus);
struct mpc83xx_pcie_priv *pcie = hose->dn->data;
u8 bus_no = bus->number - hose->first_busno;
u32 dev_base = bus_no << 24 | devfn << 16;
u32 dev_base = bus->number << 24 | devfn << 16;
int ret;
ret = mpc83xx_pcie_exclude_device(bus, devfn);
@ -515,12 +514,17 @@ static int mpc83xx_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
static int mpc83xx_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
int offset, int len, u32 val)
{
struct pci_controller *hose = pci_bus_to_host(bus);
void __iomem *cfg_addr;
cfg_addr = mpc83xx_pcie_remap_cfg(bus, devfn, offset);
if (!cfg_addr)
return PCIBIOS_DEVICE_NOT_FOUND;
/* PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS */
if (offset == PCI_PRIMARY_BUS && bus->number == hose->first_busno)
val &= 0xffffff00;
switch (len) {
case 1:
out_8(cfg_addr, val);

21
arch/powerpc/sysdev/mpc8xxx_gpio.c
View file

@ -54,6 +54,22 @@ static void mpc8xxx_gpio_save_regs(struct of_mm_gpio_chip *mm)
mpc8xxx_gc->data = in_be32(mm->regs + GPIO_DAT);
}
/* Workaround GPIO 1 errata on MPC8572/MPC8536. The status of GPIOs
* defined as output cannot be determined by reading GPDAT register,
* so we use shadow data register instead. The status of input pins
* is determined by reading GPDAT register.
*/
static int mpc8572_gpio_get(struct gpio_chip *gc, unsigned int gpio)
{
u32 val;
struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
val = in_be32(mm->regs + GPIO_DAT) & ~in_be32(mm->regs + GPIO_DIR);
return (val | mpc8xxx_gc->data) & mpc8xxx_gpio2mask(gpio);
}
static int mpc8xxx_gpio_get(struct gpio_chip *gc, unsigned int gpio)
{
struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
@ -136,7 +152,10 @@ static void __init mpc8xxx_add_controller(struct device_node *np)
gc->ngpio = MPC8XXX_GPIO_PINS;
gc->direction_input = mpc8xxx_gpio_dir_in;
gc->direction_output = mpc8xxx_gpio_dir_out;
gc->get = mpc8xxx_gpio_get;
if (of_device_is_compatible(np, "fsl,mpc8572-gpio"))
gc->get = mpc8572_gpio_get;
else
gc->get = mpc8xxx_gpio_get;
gc->set = mpc8xxx_gpio_set;
ret = of_mm_gpiochip_add(np, mm_gc);

19
arch/powerpc/sysdev/mpic.c
View file

@ -567,13 +567,11 @@ static void __init mpic_scan_ht_pics(struct mpic *mpic)
#endif /* CONFIG_MPIC_U3_HT_IRQS */
#ifdef CONFIG_SMP
static int irq_choose_cpu(unsigned int virt_irq)
static int irq_choose_cpu(const cpumask_t *mask)
{
cpumask_t mask;
int cpuid;
cpumask_copy(&mask, irq_to_desc(virt_irq)->affinity);
if (cpus_equal(mask, CPU_MASK_ALL)) {
if (cpumask_equal(mask, cpu_all_mask)) {
static int irq_rover;
static DEFINE_SPINLOCK(irq_rover_lock);
unsigned long flags;
@ -594,20 +592,15 @@ static int irq_choose_cpu(unsigned int virt_irq)
spin_unlock_irqrestore(&irq_rover_lock, flags);
} else {
cpumask_t tmp;
cpus_and(tmp, cpu_online_map, mask);
if (cpus_empty(tmp))
cpuid = cpumask_first_and(mask, cpu_online_mask);
if (cpuid >= nr_cpu_ids)
goto do_round_robin;
cpuid = first_cpu(tmp);
}
return get_hard_smp_processor_id(cpuid);
}
#else
static int irq_choose_cpu(unsigned int virt_irq)
static int irq_choose_cpu(const cpumask_t *mask)
{
return hard_smp_processor_id();
}
@ -816,7 +809,7 @@ int mpic_set_affinity(unsigned int irq, const struct cpumask *cpumask)
unsigned int src = mpic_irq_to_hw(irq);
if (mpic->flags & MPIC_SINGLE_DEST_CPU) {
int cpuid = irq_choose_cpu(irq);
int cpuid = irq_choose_cpu(cpumask);
mpic_irq_write(src, MPIC_INFO(IRQ_DESTINATION), 1 << cpuid);
} else {

11
arch/powerpc/sysdev/mpic_msi.c
View file

@ -39,7 +39,12 @@ static int mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
pr_debug("mpic: found U3, guessing msi allocator setup\n");
/* Reserve source numbers we know are reserved in the HW */
/* Reserve source numbers we know are reserved in the HW.
*
* This is a bit of a mix of U3 and U4 reserves but that's going
* to work fine, we have plenty enugh numbers left so let's just
* mark anything we don't like reserved.
*/
for (i = 0; i < 8; i++)
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, i);
@ -49,6 +54,10 @@ static int mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
for (i = 100; i < 105; i++)
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, i);
for (i = 124; i < mpic->irq_count; i++)
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, i);
np = NULL;
while ((np = of_find_all_nodes(np))) {
pr_debug("mpic: mapping hwirqs for %s\n", np->full_name);

46
arch/powerpc/sysdev/mpic_u3msi.c
View file

@ -64,12 +64,12 @@ static u64 read_ht_magic_addr(struct pci_dev *pdev, unsigned int pos)
return addr;
}
static u64 find_ht_magic_addr(struct pci_dev *pdev)
static u64 find_ht_magic_addr(struct pci_dev *pdev, unsigned int hwirq)
{
struct pci_bus *bus;
unsigned int pos;
for (bus = pdev->bus; bus; bus = bus->parent) {
for (bus = pdev->bus; bus && bus->self; bus = bus->parent) {
pos = pci_find_ht_capability(bus->self, HT_CAPTYPE_MSI_MAPPING);
if (pos)
return read_ht_magic_addr(bus->self, pos);
@ -78,13 +78,41 @@ static u64 find_ht_magic_addr(struct pci_dev *pdev)
return 0;
}
static u64 find_u4_magic_addr(struct pci_dev *pdev, unsigned int hwirq)
{
struct pci_controller *hose = pci_bus_to_host(pdev->bus);
/* U4 PCIe MSIs need to write to the special register in
* the bridge that generates interrupts. There should be
* theorically a register at 0xf8005000 where you just write
* the MSI number and that triggers the right interrupt, but
* unfortunately, this is busted in HW, the bridge endian swaps
* the value and hits the wrong nibble in the register.
*
* So instead we use another register set which is used normally
* for converting HT interrupts to MPIC interrupts, which decodes
* the interrupt number as part of the low address bits
*
* This will not work if we ever use more than one legacy MSI in
* a block but we never do. For one MSI or multiple MSI-X where
* each interrupt address can be specified separately, it works
* just fine.
*/
if (of_device_is_compatible(hose->dn, "u4-pcie") ||
of_device_is_compatible(hose->dn, "U4-pcie"))
return 0xf8004000 | (hwirq << 4);
return 0;
}
static int u3msi_msi_check_device(struct pci_dev *pdev, int nvec, int type)
{
if (type == PCI_CAP_ID_MSIX)
pr_debug("u3msi: MSI-X untested, trying anyway.\n");
/* If we can't find a magic address then MSI ain't gonna work */
if (find_ht_magic_addr(pdev) == 0) {
if (find_ht_magic_addr(pdev, 0) == 0 &&
find_u4_magic_addr(pdev, 0) == 0) {
pr_debug("u3msi: no magic address found for %s\n",
pci_name(pdev));
return -ENXIO;
@ -118,10 +146,6 @@ static int u3msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
u64 addr;
int hwirq;
addr = find_ht_magic_addr(pdev);
msg.address_lo = addr & 0xFFFFFFFF;
msg.address_hi = addr >> 32;
list_for_each_entry(entry, &pdev->msi_list, list) {
hwirq = msi_bitmap_alloc_hwirqs(&msi_mpic->msi_bitmap, 1);
if (hwirq < 0) {
@ -129,6 +153,12 @@ static int u3msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
return hwirq;
}
addr = find_ht_magic_addr(pdev, hwirq);
if (addr == 0)
addr = find_u4_magic_addr(pdev, hwirq);
msg.address_lo = addr & 0xFFFFFFFF;
msg.address_hi = addr >> 32;
virq = irq_create_mapping(msi_mpic->irqhost, hwirq);
if (virq == NO_IRQ) {
pr_debug("u3msi: failed mapping hwirq 0x%x\n", hwirq);
@ -143,6 +173,8 @@ static int u3msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
pr_debug("u3msi: allocated virq 0x%x (hw 0x%x) addr 0x%lx\n",
virq, hwirq, (unsigned long)addr);
printk("u3msi: allocated virq 0x%x (hw 0x%x) addr 0x%lx\n",
virq, hwirq, (unsigned long)addr);
msg.data = hwirq;
write_msi_msg(virq, &msg);

19
drivers/base/memory.c
View file

@ -63,6 +63,20 @@ void unregister_memory_notifier(struct notifier_block *nb)
}
EXPORT_SYMBOL(unregister_memory_notifier);
static ATOMIC_NOTIFIER_HEAD(memory_isolate_chain);
int register_memory_isolate_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_register(&memory_isolate_chain, nb);
}
EXPORT_SYMBOL(register_memory_isolate_notifier);
void unregister_memory_isolate_notifier(struct notifier_block *nb)
{
atomic_notifier_chain_unregister(&memory_isolate_chain, nb);
}
EXPORT_SYMBOL(unregister_memory_isolate_notifier);
/*
* register_memory - Setup a sysfs device for a memory block
*/
@ -157,6 +171,11 @@ int memory_notify(unsigned long val, void *v)
return blocking_notifier_call_chain(&memory_chain, val, v);
}
int memory_isolate_notify(unsigned long val, void *v)
{
return atomic_notifier_call_chain(&memory_isolate_chain, val, v);
}
/*
* MEMORY_HOTPLUG depends on SPARSEMEM in mm/Kconfig, so it is
* OK to have direct references to sparsemem variables in here.

27
include/linux/memory.h
View file

@ -50,6 +50,19 @@ struct memory_notify {
int status_change_nid;
};
/*
* During pageblock isolation, count the number of pages within the
* range [start_pfn, start_pfn + nr_pages) which are owned by code
* in the notifier chain.
*/
#define MEM_ISOLATE_COUNT (1<<0)
struct memory_isolate_notify {
unsigned long start_pfn; /* Start of range to check */
unsigned int nr_pages; /* # pages in range to check */
unsigned int pages_found; /* # pages owned found by callbacks */
};
struct notifier_block;
struct mem_section;
@ -76,14 +89,28 @@ static inline int memory_notify(unsigned long val, void *v)
{
return 0;
}
static inline int register_memory_isolate_notifier(struct notifier_block *nb)
{
return 0;
}
static inline void unregister_memory_isolate_notifier(struct notifier_block *nb)
{
}
static inline int memory_isolate_notify(unsigned long val, void *v)
{
return 0;
}
#else
extern int register_memory_notifier(struct notifier_block *nb);
extern void unregister_memory_notifier(struct notifier_block *nb);
extern int register_memory_isolate_notifier(struct notifier_block *nb);
extern void unregister_memory_isolate_notifier(struct notifier_block *nb);
extern int register_new_memory(int, struct mem_section *);
extern int unregister_memory_section(struct mem_section *);
extern int memory_dev_init(void);
extern int remove_memory_block(unsigned long, struct mem_section *, int);
extern int memory_notify(unsigned long val, void *v);
extern int memory_isolate_notify(unsigned long val, void *v);
extern struct memory_block *find_memory_block(struct mem_section *);
#define CONFIG_MEM_BLOCK_SIZE (PAGES_PER_SECTION<<PAGE_SHIFT)
enum mem_add_context { BOOT, HOTPLUG };

61
mm/page_alloc.c
View file

@ -48,6 +48,7 @@
#include <linux/page_cgroup.h>
#include <linux/debugobjects.h>
#include <linux/kmemleak.h>
#include <linux/memory.h>
#include <trace/events/kmem.h>
#include <asm/tlbflush.h>
@ -5008,23 +5009,65 @@ void set_pageblock_flags_group(struct page *page, unsigned long flags,
int set_migratetype_isolate(struct page *page)
{
struct zone *zone;
unsigned long flags;
struct page *curr_page;
unsigned long flags, pfn, iter;
unsigned long immobile = 0;
struct memory_isolate_notify arg;
int notifier_ret;
int ret = -EBUSY;
int zone_idx;
zone = page_zone(page);
zone_idx = zone_idx(zone);
spin_lock_irqsave(&zone->lock, flags);
/*
* In future, more migrate types will be able to be isolation target.
*/
if (get_pageblock_migratetype(page) != MIGRATE_MOVABLE &&
zone_idx != ZONE_MOVABLE)
if (get_pageblock_migratetype(page) == MIGRATE_MOVABLE ||
zone_idx == ZONE_MOVABLE) {
ret = 0;
goto out;
set_pageblock_migratetype(page, MIGRATE_ISOLATE);
move_freepages_block(zone, page, MIGRATE_ISOLATE);
ret = 0;
}
pfn = page_to_pfn(page);
arg.start_pfn = pfn;
arg.nr_pages = pageblock_nr_pages;
arg.pages_found = 0;
/*
* It may be possible to isolate a pageblock even if the
* migratetype is not MIGRATE_MOVABLE. The memory isolation
* notifier chain is used by balloon drivers to return the
* number of pages in a range that are held by the balloon
* driver to shrink memory. If all the pages are accounted for
* by balloons, are free, or on the LRU, isolation can continue.
* Later, for example, when memory hotplug notifier runs, these
* pages reported as "can be isolated" should be isolated(freed)
* by the balloon driver through the memory notifier chain.
*/
notifier_ret = memory_isolate_notify(MEM_ISOLATE_COUNT, &arg);
notifier_ret = notifier_to_errno(notifier_ret);
if (notifier_ret || !arg.pages_found)
goto out;
for (iter = pfn; iter < (pfn + pageblock_nr_pages); iter++) {
if (!pfn_valid_within(pfn))
continue;
curr_page = pfn_to_page(iter);
if (!page_count(curr_page) || PageLRU(curr_page))
continue;
immobile++;
}
if (arg.pages_found == immobile)
ret = 0;
out:
if (!ret) {
set_pageblock_migratetype(page, MIGRATE_ISOLATE);
move_freepages_block(zone, page, MIGRATE_ISOLATE);
}
spin_unlock_irqrestore(&zone->lock, flags);
if (!ret)
drain_all_pages();