* 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: S5PV210: update MAX8998 platform data to get rid of WARN()
ARM S3C24XX: Fix compilation of PM code for S3C2416
ARM: S3C24XX: Fix CONFIG_S3C_DEV_NAND Kconfig entry
reset_devices [KNL] Force drivers to reset the underlying device
during initialization.
- resource_alloc_from_bottom
- Allocate new resources from the beginning of available
- space, not the end. If you need to use this, please
- report a bug.
-
resume= [SWSUSP]
Specify the partition device for software suspend
zero)
bool pm_runtime_suspended(struct device *dev);
- - return true if the device's runtime PM status is 'suspended', or false
- otherwise
+ - return true if the device's runtime PM status is 'suspended' and its
+ 'power.disable_depth' field is equal to zero, or false otherwise
void pm_runtime_allow(struct device *dev);
- set the power.runtime_auto flag for the device and decrease its usage
obj-$(CONFIG_MACH_CPU9G20) += board-cpu9krea.o
obj-$(CONFIG_MACH_STAMP9G20) += board-stamp9g20.o
obj-$(CONFIG_MACH_PORTUXG20) += board-stamp9g20.o
-obj-$(CONFIG_MACH_PCONTROL_G20) += board-pcontrol-g20.o
+obj-$(CONFIG_MACH_PCONTROL_G20) += board-pcontrol-g20.o board-stamp9g20.o
# AT91SAM9260/AT91SAM9G20 board-specific support
obj-$(CONFIG_MACH_SNAPPER_9260) += board-snapper9260.o
#include <mach/board.h>
#include <mach/at91sam9_smc.h>
+#include <mach/stamp9g20.h>
#include "sam9_smc.h"
#include "generic.h"
static void __init pcontrol_g20_map_io(void)
{
- /* Initialize processor: 18.432 MHz crystal */
- at91sam9260_initialize(18432000);
-
- /* DGBU on ttyS0. (Rx, Tx) only TTL -> JTAG connector X7 17,19 ) */
- at91_register_uart(0, 0, 0);
+ stamp9g20_map_io();
/* USART0 on ttyS1. (Rx, Tx, CTS, RTS) piggyback A2 */
at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS
/* USART2 on ttyS3. (Rx, Tx) 9bit-Bus Multidrop-mode X4 */
at91_register_uart(AT91SAM9260_ID_US4, 3, 0);
-
- /* set serial console to ttyS0 (ie, DBGU) */
- at91_set_serial_console(0);
}
}
-/*
- * NAND flash 512MiB 1,8V 8-bit, sector size 128 KiB
- */
-static struct atmel_nand_data __initdata nand_data = {
- .ale = 21,
- .cle = 22,
- .rdy_pin = AT91_PIN_PC13,
- .enable_pin = AT91_PIN_PC14,
-};
-
-/*
- * Bus timings; unit = 7.57ns
- */
-static struct sam9_smc_config __initdata nand_smc_config = {
- .ncs_read_setup = 0,
- .nrd_setup = 2,
- .ncs_write_setup = 0,
- .nwe_setup = 2,
-
- .ncs_read_pulse = 4,
- .nrd_pulse = 4,
- .ncs_write_pulse = 4,
- .nwe_pulse = 4,
-
- .read_cycle = 7,
- .write_cycle = 7,
-
- .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
- | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
- .tdf_cycles = 3,
-};
-
static struct sam9_smc_config __initdata pcontrol_smc_config[2] = { {
.ncs_read_setup = 16,
.nrd_setup = 18,
.tdf_cycles = 1,
} };
-static void __init add_device_nand(void)
-{
- /* configure chip-select 3 (NAND) */
- sam9_smc_configure(3, &nand_smc_config);
- at91_add_device_nand(&nand_data);
-}
-
-
static void __init add_device_pcontrol(void)
{
/* configure chip-select 4 (IO compatible to 8051 X4 ) */
}
-/*
- * MCI (SD/MMC)
- * det_pin, wp_pin and vcc_pin are not connected
- */
-#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
-static struct mci_platform_data __initdata mmc_data = {
- .slot[0] = {
- .bus_width = 4,
- },
-};
-#else
-static struct at91_mmc_data __initdata mmc_data = {
- .wire4 = 1,
-};
-#endif
-
-
/*
* USB Host port
*/
};
-/*
- * Dallas 1-Wire DS2431
- */
-static struct w1_gpio_platform_data w1_gpio_pdata = {
- .pin = AT91_PIN_PA29,
- .is_open_drain = 1,
-};
-
-static struct platform_device w1_device = {
- .name = "w1-gpio",
- .id = -1,
- .dev.platform_data = &w1_gpio_pdata,
-};
-
-static void add_wire1(void)
-{
- at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
- at91_set_multi_drive(w1_gpio_pdata.pin, 1);
- platform_device_register(&w1_device);
-}
-
-
static void __init pcontrol_g20_board_init(void)
{
- at91_add_device_serial();
- add_device_nand();
-#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
- at91_add_device_mci(0, &mmc_data);
-#else
- at91_add_device_mmc(0, &mmc_data);
-#endif
+ stamp9g20_board_init();
at91_add_device_usbh(&usbh_data);
at91_add_device_eth(&macb_data);
at91_add_device_i2c(pcontrol_g20_i2c_devices,
ARRAY_SIZE(pcontrol_g20_i2c_devices));
- add_wire1();
add_device_pcontrol();
at91_add_device_spi(pcontrol_g20_spi_devices,
ARRAY_SIZE(pcontrol_g20_spi_devices));
#include "generic.h"
-static void __init portuxg20_map_io(void)
+void __init stamp9g20_map_io(void)
{
/* Initialize processor: 18.432 MHz crystal */
at91sam9260_initialize(18432000);
/* DGBU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
+ /* set serial console to ttyS0 (ie, DBGU) */
+ at91_set_serial_console(0);
+}
+
+static void __init stamp9g20evb_map_io(void)
+{
+ stamp9g20_map_io();
+
+ /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
+ at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
+ | ATMEL_UART_DTR | ATMEL_UART_DSR
+ | ATMEL_UART_DCD | ATMEL_UART_RI);
+}
+
+static void __init portuxg20_map_io(void)
+{
+ stamp9g20_map_io();
+
/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
| ATMEL_UART_DTR | ATMEL_UART_DSR
/* USART5 on ttyS6. (Rx, Tx only) */
at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
-
- /* set serial console to ttyS0 (ie, DBGU) */
- at91_set_serial_console(0);
-}
-
-static void __init stamp9g20_map_io(void)
-{
- /* Initialize processor: 18.432 MHz crystal */
- at91sam9260_initialize(18432000);
-
- /* DGBU on ttyS0. (Rx & Tx only) */
- at91_register_uart(0, 0, 0);
-
- /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
- at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
- | ATMEL_UART_DTR | ATMEL_UART_DSR
- | ATMEL_UART_DCD | ATMEL_UART_RI);
-
- /* set serial console to ttyS0 (ie, DBGU) */
- at91_set_serial_console(0);
}
static void __init init_irq(void)
.pullup_pin = 0, /* pull-up driven by UDC */
};
-static struct at91_udc_data __initdata stamp9g20_udc_data = {
+static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
.vbus_pin = AT91_PIN_PA22,
.pullup_pin = 0, /* pull-up driven by UDC */
};
}
};
-static struct gpio_led stamp9g20_leds[] = {
+static struct gpio_led stamp9g20evb_leds[] = {
{
.name = "D8",
.gpio = AT91_PIN_PB18,
}
-static void __init generic_board_init(void)
+void __init stamp9g20_board_init(void)
{
/* Serial */
at91_add_device_serial();
#else
at91_add_device_mmc(0, &mmc_data);
#endif
- /* USB Host */
- at91_add_device_usbh(&usbh_data);
- /* Ethernet */
- at91_add_device_eth(&macb_data);
- /* I2C */
- at91_add_device_i2c(NULL, 0);
/* W1 */
add_w1();
}
static void __init portuxg20_board_init(void)
{
- generic_board_init();
- /* SPI */
- at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
+ stamp9g20_board_init();
+ /* USB Host */
+ at91_add_device_usbh(&usbh_data);
/* USB Device */
at91_add_device_udc(&portuxg20_udc_data);
+ /* Ethernet */
+ at91_add_device_eth(&macb_data);
+ /* I2C */
+ at91_add_device_i2c(NULL, 0);
+ /* SPI */
+ at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
/* LEDs */
at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
}
-static void __init stamp9g20_board_init(void)
+static void __init stamp9g20evb_board_init(void)
{
- generic_board_init();
+ stamp9g20_board_init();
+ /* USB Host */
+ at91_add_device_usbh(&usbh_data);
/* USB Device */
- at91_add_device_udc(&stamp9g20_udc_data);
+ at91_add_device_udc(&stamp9g20evb_udc_data);
+ /* Ethernet */
+ at91_add_device_eth(&macb_data);
+ /* I2C */
+ at91_add_device_i2c(NULL, 0);
/* LEDs */
- at91_gpio_leds(stamp9g20_leds, ARRAY_SIZE(stamp9g20_leds));
+ at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
}
MACHINE_START(PORTUXG20, "taskit PortuxG20")
/* Maintainer: taskit GmbH */
.boot_params = AT91_SDRAM_BASE + 0x100,
.timer = &at91sam926x_timer,
- .map_io = stamp9g20_map_io,
+ .map_io = stamp9g20evb_map_io,
.init_irq = init_irq,
- .init_machine = stamp9g20_board_init,
+ .init_machine = stamp9g20evb_board_init,
MACHINE_END
/* Now set uhpck values */
uhpck.parent = &utmi_clk;
uhpck.pmc_mask = AT91SAM926x_PMC_UHP;
- uhpck.rate_hz = utmi_clk.parent->rate_hz;
+ uhpck.rate_hz = utmi_clk.rate_hz;
uhpck.rate_hz /= 1 + ((at91_sys_read(AT91_PMC_USB) & AT91_PMC_OHCIUSBDIV) >> 8);
}
--- /dev/null
+#ifndef __MACH_STAMP9G20_H
+#define __MACH_STAMP9G20_H
+
+void stamp9g20_map_io(void);
+void stamp9g20_board_init(void);
+
+#endif
select GENERIC_ATOMIC64 if !64BIT
select HAVE_DMA_ATTRS
select HAVE_DMA_API_DEBUG
+ select HAVE_GENERIC_HARDIRQS
+ select GENERIC_IRQ_PROBE
menu "Machine selection"
endchoice
+config FORCE_MAX_ZONEORDER
+ int "Maximum zone order"
+ range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
+ default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
+ range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
+ default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
+ range 11 64
+ default "11"
+ help
+ The kernel memory allocator divides physically contiguous memory
+ blocks into "zones", where each zone is a power of two number of
+ pages. This option selects the largest power of two that the kernel
+ keeps in the memory allocator. If you need to allocate very large
+ blocks of physically contiguous memory, then you may need to
+ increase this value.
+
+ This config option is actually maximum order plus one. For example,
+ a value of 11 means that the largest free memory block is 2^10 pages.
+
+ The page size is not necessarily 4KB. Keep this in mind
+ when choosing a value for this option.
+
config BOARD_SCACHE
bool
config CPU_R4400_WORKAROUNDS
bool
-#
-# Use the generic interrupt handling code in kernel/irq/:
-#
-config GENERIC_HARDIRQS
- bool
- default y
-
-config GENERIC_IRQ_PROBE
- bool
- default y
-
-config IRQ_PER_CPU
- bool
-
#
# - Highmem only makes sense for the 32-bit kernel.
# - The current highmem code will only work properly on physically indexed
static void alchemy_8250_pm(struct uart_port *port, unsigned int state,
unsigned int old_state)
{
+#ifdef CONFIG_SERIAL_8250
switch (state) {
case 0:
if ((__raw_readl(port->membase + UART_MOD_CNTRL) & 3) != 3) {
serial8250_do_pm(port, state, old_state);
break;
}
+#endif
}
#define PORT(_base, _irq) \
prom_init_cmdline();
memsize_str = prom_getenv("memsize");
- if (!memsize_str)
+ if (!memsize_str || strict_strtoul(memsize_str, 0, &memsize))
memsize = ALCHEMY_BOARD_DEFAULT_MEMSIZE;
- else
- strict_strtoul(memsize_str, 0, &memsize);
+
add_memory_region(0, memsize, BOOT_MEM_RAM);
}
calculate(base_clock, frequency, &prediv, &postdiv, &mul);
writel(((prediv - 1) << PREDIV_SHIFT) | (postdiv - 1), &clock->ctrl);
- msleep(1);
+ mdelay(1);
writel(4, &clock->pll);
while (readl(&clock->pll) & PLL_STATUS)
;
writel(((mul - 1) << MUL_SHIFT) | (0xff << 3) | 0x0e, &clock->pll);
- msleep(75);
+ mdelay(75);
}
static void __init tnetd7300_init_clocks(void)
}
EXPORT_SYMBOL(clk_put);
-int __init ar7_init_clocks(void)
+void __init ar7_init_clocks(void)
{
switch (ar7_chip_id()) {
case AR7_CHIP_7100:
}
/* adjust vbus clock rate */
vbus_clk.rate = bus_clk.rate / 2;
-
- return 0;
}
-arch_initcall(ar7_init_clocks);
{
struct clk *cpu_clk;
+ /* Initialize ar7 clocks so the CPU clock frequency is correct */
+ ar7_init_clocks();
+
cpu_clk = clk_get(NULL, "cpu");
if (IS_ERR(cpu_clk)) {
printk(KERN_ERR "unable to get cpu clock\n");
#include <asm/reboot.h>
#include <asm/time.h>
#include <bcm47xx.h>
-#include <asm/fw/cfe/cfe_api.h>
#include <asm/mach-bcm47xx/nvram.h>
struct ssb_bus ssb_bcm47xx;
cpu_relax();
}
-static void str2eaddr(char *str, char *dest)
-{
- int i = 0;
+#define READ_FROM_NVRAM(_outvar, name, buf) \
+ if (nvram_getenv(name, buf, sizeof(buf)) >= 0)\
+ sprom->_outvar = simple_strtoul(buf, NULL, 0);
- if (str == NULL) {
- memset(dest, 0, 6);
- return;
+static void bcm47xx_fill_sprom(struct ssb_sprom *sprom)
+{
+ char buf[100];
+ u32 boardflags;
+
+ memset(sprom, 0, sizeof(struct ssb_sprom));
+
+ sprom->revision = 1; /* Fallback: Old hardware does not define this. */
+ READ_FROM_NVRAM(revision, "sromrev", buf);
+ if (nvram_getenv("il0macaddr", buf, sizeof(buf)) >= 0)
+ nvram_parse_macaddr(buf, sprom->il0mac);
+ if (nvram_getenv("et0macaddr", buf, sizeof(buf)) >= 0)
+ nvram_parse_macaddr(buf, sprom->et0mac);
+ if (nvram_getenv("et1macaddr", buf, sizeof(buf)) >= 0)
+ nvram_parse_macaddr(buf, sprom->et1mac);
+ READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
+ READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
+ READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
+ READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
+ READ_FROM_NVRAM(board_rev, "boardrev", buf);
+ READ_FROM_NVRAM(country_code, "ccode", buf);
+ READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
+ READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
+ READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
+ READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
+ READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
+ READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
+ READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
+ READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
+ READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
+ READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
+ READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
+ READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
+ READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
+ READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
+ READ_FROM_NVRAM(gpio0, "wl0gpio0", buf);
+ READ_FROM_NVRAM(gpio1, "wl0gpio1", buf);
+ READ_FROM_NVRAM(gpio2, "wl0gpio2", buf);
+ READ_FROM_NVRAM(gpio3, "wl0gpio3", buf);
+ READ_FROM_NVRAM(maxpwr_bg, "pa0maxpwr", buf);
+ READ_FROM_NVRAM(maxpwr_al, "pa1lomaxpwr", buf);
+ READ_FROM_NVRAM(maxpwr_a, "pa1maxpwr", buf);
+ READ_FROM_NVRAM(maxpwr_ah, "pa1himaxpwr", buf);
+ READ_FROM_NVRAM(itssi_a, "pa1itssit", buf);
+ READ_FROM_NVRAM(itssi_bg, "pa0itssit", buf);
+ READ_FROM_NVRAM(tri2g, "tri2g", buf);
+ READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
+ READ_FROM_NVRAM(tri5g, "tri5g", buf);
+ READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
+ READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
+ READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
+ READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
+ READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
+ READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
+ READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
+ READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
+ READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
+ READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
+ READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
+ READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
+ READ_FROM_NVRAM(ofdm2gpo, "ofdm2gpo", buf);
+ READ_FROM_NVRAM(ofdm5glpo, "ofdm5glpo", buf);
+ READ_FROM_NVRAM(ofdm5gpo, "ofdm5gpo", buf);
+ READ_FROM_NVRAM(ofdm5ghpo, "ofdm5ghpo", buf);
+
+ if (nvram_getenv("boardflags", buf, sizeof(buf)) >= 0) {
+ boardflags = simple_strtoul(buf, NULL, 0);
+ if (boardflags) {
+ sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
+ sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
+ }
}
-
- for (;;) {
- dest[i++] = (char) simple_strtoul(str, NULL, 16);
- str += 2;
- if (!*str++ || i == 6)
- break;
+ if (nvram_getenv("boardflags2", buf, sizeof(buf)) >= 0) {
+ boardflags = simple_strtoul(buf, NULL, 0);
+ if (boardflags) {
+ sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
+ sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
+ }
}
}
static int bcm47xx_get_invariants(struct ssb_bus *bus,
struct ssb_init_invariants *iv)
{
- char buf[100];
+ char buf[20];
/* Fill boardinfo structure */
memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
- if (cfe_getenv("boardvendor", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
- iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
- if (cfe_getenv("boardtype", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
+ if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
+ iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
+ else
+ iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
+ if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
- if (cfe_getenv("boardrev", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
+ if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
- /* Fill sprom structure */
- memset(&(iv->sprom), 0, sizeof(struct ssb_sprom));
- iv->sprom.revision = 3;
-
- if (cfe_getenv("et0macaddr", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("et0macaddr", buf, sizeof(buf)) >= 0)
- str2eaddr(buf, iv->sprom.et0mac);
+ bcm47xx_fill_sprom(&iv->sprom);
- if (cfe_getenv("et1macaddr", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("et1macaddr", buf, sizeof(buf)) >= 0)
- str2eaddr(buf, iv->sprom.et1mac);
-
- if (cfe_getenv("et0phyaddr", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("et0phyaddr", buf, sizeof(buf)) >= 0)
- iv->sprom.et0phyaddr = simple_strtoul(buf, NULL, 0);
-
- if (cfe_getenv("et1phyaddr", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("et1phyaddr", buf, sizeof(buf)) >= 0)
- iv->sprom.et1phyaddr = simple_strtoul(buf, NULL, 0);
-
- if (cfe_getenv("et0mdcport", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("et0mdcport", buf, sizeof(buf)) >= 0)
- iv->sprom.et0mdcport = simple_strtoul(buf, NULL, 10);
-
- if (cfe_getenv("et1mdcport", buf, sizeof(buf)) >= 0 ||
- nvram_getenv("et1mdcport", buf, sizeof(buf)) >= 0)
- iv->sprom.et1mdcport = simple_strtoul(buf, NULL, 10);
+ if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
+ iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
return 0;
}
void __init plat_mem_setup(void)
{
int err;
+ char buf[100];
+ struct ssb_mipscore *mcore;
err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
bcm47xx_get_invariants);
if (err)
panic("Failed to initialize SSB bus (err %d)\n", err);
+ mcore = &ssb_bcm47xx.mipscore;
+ if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
+ if (strstr(buf, "console=ttyS1")) {
+ struct ssb_serial_port port;
+
+ printk(KERN_DEBUG "Swapping serial ports!\n");
+ /* swap serial ports */
+ memcpy(&port, &mcore->serial_ports[0], sizeof(port));
+ memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
+ sizeof(port));
+ memcpy(&mcore->serial_ports[1], &port, sizeof(port));
+ }
+ }
+
_machine_restart = bcm47xx_machine_restart;
_machine_halt = bcm47xx_machine_halt;
pm_power_off = bcm47xx_machine_halt;
* These are the PRID's for when 23:16 == PRID_COMP_BROADCOM
*/
-#define PRID_IMP_BMIPS4KC 0x4000
-#define PRID_IMP_BMIPS32 0x8000
+#define PRID_IMP_BMIPS32_REV4 0x4000
+#define PRID_IMP_BMIPS32_REV8 0x8000
#define PRID_IMP_BMIPS3300 0x9000
#define PRID_IMP_BMIPS3300_ALT 0x9100
#define PRID_IMP_BMIPS3300_BUG 0x0000
#define SET_PERSONALITY(ex) \
do { \
- set_personality(PER_LINUX); \
+ if (personality(current->personality) != PER_LINUX) \
+ set_personality(PER_LINUX); \
\
current->thread.abi = &mips_abi; \
} while (0)
#define SET_PERSONALITY(ex) \
do { \
+ unsigned int p; \
+ \
clear_thread_flag(TIF_32BIT_REGS); \
clear_thread_flag(TIF_32BIT_ADDR); \
\
else \
current->thread.abi = &mips_abi; \
\
- if (current->personality != PER_LINUX32) \
+ p = personality(current->personality); \
+ if (p != PER_LINUX32 && p != PER_LINUX) \
set_personality(PER_LINUX); \
} while (0)
"dsrl32 %L0, %L0, 0" "\n\t" \
"dsll32 %M0, %M0, 0" "\n\t" \
"or %L0, %L0, %M0" "\n\t" \
+ ".set push" "\n\t" \
+ ".set noreorder" "\n\t" \
+ ".set nomacro" "\n\t" \
"sd %L0, %2" "\n\t" \
+ ".set pop" "\n\t" \
".set mips0" "\n" \
: "=r" (__tmp) \
- : "0" (__val), "m" (*__mem)); \
+ : "0" (__val), "R" (*__mem)); \
if (irq) \
local_irq_restore(__flags); \
} else \
local_irq_save(__flags); \
__asm__ __volatile__( \
".set mips3" "\t\t# __readq" "\n\t" \
+ ".set push" "\n\t" \
+ ".set noreorder" "\n\t" \
+ ".set nomacro" "\n\t" \
"ld %L0, %1" "\n\t" \
+ ".set pop" "\n\t" \
"dsra32 %M0, %L0, 0" "\n\t" \
"sll %L0, %L0, 0" "\n\t" \
".set mips0" "\n" \
: "=r" (__val) \
- : "m" (*__mem)); \
+ : "R" (*__mem)); \
if (irq) \
local_irq_restore(__flags); \
} else { \
}
int __init ar7_gpio_init(void);
-
-int __init ar7_gpio_init(void);
+void __init ar7_init_clocks(void);
#endif /* __AR7_H__ */
#define __NVRAM_H
#include <linux/types.h>
+#include <linux/kernel.h>
struct nvram_header {
u32 magic;
extern int nvram_getenv(char *name, char *val, size_t val_len);
+static inline void nvram_parse_macaddr(char *buf, u8 *macaddr)
+{
+ sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0], &macaddr[1],
+ &macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
+}
+
#endif
*
* Copyright (c) 2009 Qi Hardware inc.,
* Author: Xiangfu Liu <xiangfu@qi-hardware.com>
- * Copyright 2010, Lars-Petrer Clausen <lars@metafoo.de>
+ * Copyright 2010, Lars-Peter Clausen <lars@metafoo.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 or later
QI_LB60_GPIO_KEYIN(3),
QI_LB60_GPIO_KEYIN(4),
QI_LB60_GPIO_KEYIN(5),
- QI_LB60_GPIO_KEYIN(7),
+ QI_LB60_GPIO_KEYIN(6),
QI_LB60_GPIO_KEYIN8,
};
/* PCM */
struct platform_device jz4740_pcm_device = {
- .name = "jz4740-pcm",
+ .name = "jz4740-pcm-audio",
.id = -1,
};
#include <asm/bootinfo.h>
#include <asm/mach-jz4740/base.h>
-void jz4740_init_cmdline(int argc, char *argv[])
+static __init void jz4740_init_cmdline(int argc, char *argv[])
{
unsigned int count = COMMAND_LINE_SIZE - 1;
int i;
cnt = read_c0_count();
cnt += delta;
write_c0_compare(cnt);
- res = ((int)(read_c0_count() - cnt) > 0) ? -ETIME : 0;
+ res = ((int)(read_c0_count() - cnt) >= 0) ? -ETIME : 0;
return res;
}
{
decode_configs(c);
switch (c->processor_id & 0xff00) {
- case PRID_IMP_BMIPS32:
+ case PRID_IMP_BMIPS32_REV4:
+ case PRID_IMP_BMIPS32_REV8:
c->cputype = CPU_BMIPS32;
__cpu_name[cpu] = "Broadcom BMIPS32";
break;
__cpu_name[cpu] = "Broadcom BMIPS5000";
c->options |= MIPS_CPU_ULRI;
break;
- case PRID_IMP_BMIPS4KC:
- c->cputype = CPU_4KC;
- __cpu_name[cpu] = "MIPS 4Kc";
- break;
}
}
SYSCALL_DEFINE1(32_personality, unsigned long, personality)
{
+ unsigned int p = personality & 0xffffffff;
int ret;
- personality &= 0xffffffff;
+
if (personality(current->personality) == PER_LINUX32 &&
- personality == PER_LINUX)
- personality = PER_LINUX32;
- ret = sys_personality(personality);
- if (ret == PER_LINUX32)
- ret = PER_LINUX;
+ personality(p) == PER_LINUX)
+ p = (p & ~PER_MASK) | PER_LINUX32;
+ ret = sys_personality(p);
+ if (ret != -1 && personality(ret) == PER_LINUX32)
+ ret = (ret & ~PER_MASK) | PER_LINUX;
return ret;
}
childregs->regs[7] = 0; /* Clear error flag */
childregs->regs[2] = 0; /* Child gets zero as return value */
- regs->regs[2] = p->pid;
if (childregs->cp0_status & ST0_CU0) {
childregs->regs[28] = (unsigned long) ti;
return;
base = virt_to_phys((void *)initial_boot_params);
- size = initial_boot_params->totalsize;
+ size = be32_to_cpu(initial_boot_params->totalsize);
/* Before we do anything, lets reserve the dt blob */
reserve_mem_mach(base, size);
{
extern int gic_present;
- /* This is Malta specific: IPI,performance and timer inetrrupts */
+ /* This is Malta specific: IPI,performance and timer interrupts */
if (gic_present)
change_c0_status(ST0_IM, STATUSF_IP3 | STATUSF_IP4 |
STATUSF_IP6 | STATUSF_IP7);
extern asmlinkage void handle_reserved(void);
extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
- struct mips_fpu_struct *ctx, int has_fpu);
+ struct mips_fpu_struct *ctx, int has_fpu,
+ void *__user *fault_addr);
void (*board_be_init)(void);
int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
force_sig_info(SIGFPE, &info, current);
}
+static int process_fpemu_return(int sig, void __user *fault_addr)
+{
+ if (sig == SIGSEGV || sig == SIGBUS) {
+ struct siginfo si = {0};
+ si.si_addr = fault_addr;
+ si.si_signo = sig;
+ if (sig == SIGSEGV) {
+ if (find_vma(current->mm, (unsigned long)fault_addr))
+ si.si_code = SEGV_ACCERR;
+ else
+ si.si_code = SEGV_MAPERR;
+ } else {
+ si.si_code = BUS_ADRERR;
+ }
+ force_sig_info(sig, &si, current);
+ return 1;
+ } else if (sig) {
+ force_sig(sig, current);
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
/*
* XXX Delayed fp exceptions when doing a lazy ctx switch XXX
*/
asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
{
- siginfo_t info;
+ siginfo_t info = {0};
if (notify_die(DIE_FP, "FP exception", regs, 0, regs_to_trapnr(regs), SIGFPE)
== NOTIFY_STOP)
if (fcr31 & FPU_CSR_UNI_X) {
int sig;
+ void __user *fault_addr = NULL;
/*
* Unimplemented operation exception. If we've got the full
lose_fpu(1);
/* Run the emulator */
- sig = fpu_emulator_cop1Handler(regs, ¤t->thread.fpu, 1);
+ sig = fpu_emulator_cop1Handler(regs, ¤t->thread.fpu, 1,
+ &fault_addr);
/*
* We can't allow the emulated instruction to leave any of
own_fpu(1); /* Using the FPU again. */
/* If something went wrong, signal */
- if (sig)
- force_sig(sig, current);
+ process_fpemu_return(sig, fault_addr);
return;
} else if (fcr31 & FPU_CSR_INV_X)
if (!raw_cpu_has_fpu) {
int sig;
+ void __user *fault_addr = NULL;
sig = fpu_emulator_cop1Handler(regs,
- ¤t->thread.fpu, 0);
- if (sig)
- force_sig(sig, current);
- else
+ ¤t->thread.fpu,
+ 0, &fault_addr);
+ if (!process_fpemu_return(sig, fault_addr))
mt_ase_fp_affinity();
}
/* this of-course trashes what was there before... */
v->pbuffer = vmalloc(P_SIZE);
+ if (!v->pbuffer) {
+ pr_warning("VPE loader: unable to allocate memory\n");
+ return -ENOMEM;
+ }
v->plen = P_SIZE;
v->load_addr = NULL;
v->len = 0;
if (ret < 0)
v->shared_ptr = NULL;
- // cleanup any temp buffers
- if (v->pbuffer)
- vfree(v->pbuffer);
+ vfree(v->pbuffer);
v->plen = 0;
+
return ret;
}
if (v == NULL)
return -ENODEV;
- if (v->pbuffer == NULL) {
- printk(KERN_ERR "VPE loader: no buffer for program\n");
- return -ENOMEM;
- }
-
if ((count + v->len) > v->plen) {
printk(KERN_WARNING
"VPE loader: elf size too big. Perhaps strip uneeded symbols\n");
.Lfwd_fixup:
PTR_L t0, TI_TASK($28)
- LONG_L t0, THREAD_BUADDR(t0)
andi a2, 0x3f
+ LONG_L t0, THREAD_BUADDR(t0)
LONG_ADDU a2, t1
jr ra
LONG_SUBU a2, t0
.Lpartial_fixup:
PTR_L t0, TI_TASK($28)
- LONG_L t0, THREAD_BUADDR(t0)
andi a2, LONGMASK
+ LONG_L t0, THREAD_BUADDR(t0)
LONG_ADDU a2, t1
jr ra
LONG_SUBU a2, t0
#define parse_even_earlier(res, option, p) \
do { \
+ int ret; \
if (strncmp(option, (char *)p, strlen(option)) == 0) \
- strict_strtol((char *)p + strlen(option"="), \
- 10, &res); \
+ ret = strict_strtol((char *)p + strlen(option"="), 10, &res); \
} while (0)
void __init prom_init_env(void)
#if __mips >= 4 && __mips != 32
static int fpux_emu(struct pt_regs *,
- struct mips_fpu_struct *, mips_instruction);
+ struct mips_fpu_struct *, mips_instruction, void *__user *);
#endif
/* Further private data for which no space exists in mips_fpu_struct */
* Two instructions if the instruction is in a branch delay slot.
*/
-static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
+static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
+ void *__user *fault_addr)
{
mips_instruction ir;
unsigned long emulpc, contpc;
unsigned int cond;
- if (get_user(ir, (mips_instruction __user *) xcp->cp0_epc)) {
+ if (!access_ok(VERIFY_READ, xcp->cp0_epc, sizeof(mips_instruction))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)xcp->cp0_epc;
return SIGBUS;
}
+ if (__get_user(ir, (mips_instruction __user *) xcp->cp0_epc)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)xcp->cp0_epc;
+ return SIGSEGV;
+ }
/* XXX NEC Vr54xx bug workaround */
if ((xcp->cp0_cause & CAUSEF_BD) && !isBranchInstr(&ir))
#endif
return SIGILL;
}
- if (get_user(ir, (mips_instruction __user *) emulpc)) {
+ if (!access_ok(VERIFY_READ, emulpc, sizeof(mips_instruction))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)emulpc;
return SIGBUS;
}
+ if (__get_user(ir, (mips_instruction __user *) emulpc)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)emulpc;
+ return SIGSEGV;
+ }
/* __compute_return_epc() will have updated cp0_epc */
contpc = xcp->cp0_epc;
/* In order not to confuse ptrace() et al, tweak context */
u64 val;
MIPS_FPU_EMU_INC_STATS(loads);
- if (get_user(val, va)) {
+
+ if (!access_ok(VERIFY_READ, va, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (__get_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
DITOREG(val, MIPSInst_RT(ir));
break;
}
MIPS_FPU_EMU_INC_STATS(stores);
DIFROMREG(val, MIPSInst_RT(ir));
- if (put_user(val, va)) {
+ if (!access_ok(VERIFY_WRITE, va, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (__put_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
break;
}
u32 val;
MIPS_FPU_EMU_INC_STATS(loads);
- if (get_user(val, va)) {
+ if (!access_ok(VERIFY_READ, va, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (__get_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
SITOREG(val, MIPSInst_RT(ir));
break;
}
MIPS_FPU_EMU_INC_STATS(stores);
SIFROMREG(val, MIPSInst_RT(ir));
- if (put_user(val, va)) {
+ if (!access_ok(VERIFY_WRITE, va, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (__put_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
break;
}
contpc = (xcp->cp0_epc +
(MIPSInst_SIMM(ir) << 2));
- if (get_user(ir,
- (mips_instruction __user *) xcp->cp0_epc)) {
+ if (!access_ok(VERIFY_READ, xcp->cp0_epc,
+ sizeof(mips_instruction))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)xcp->cp0_epc;
return SIGBUS;
}
+ if (__get_user(ir,
+ (mips_instruction __user *) xcp->cp0_epc)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)xcp->cp0_epc;
+ return SIGSEGV;
+ }
switch (MIPSInst_OPCODE(ir)) {
case lwc1_op:
#if __mips >= 4 && __mips != 32
case cop1x_op:{
- int sig;
-
- if ((sig = fpux_emu(xcp, ctx, ir)))
+ int sig = fpux_emu(xcp, ctx, ir, fault_addr);
+ if (sig)
return sig;
break;
}
DEF3OP(nmsub, dp, ieee754dp_mul, ieee754dp_sub, ieee754dp_neg);
static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
- mips_instruction ir)
+ mips_instruction ir, void *__user *fault_addr)
{
unsigned rcsr = 0; /* resulting csr */
xcp->regs[MIPSInst_FT(ir)]);
MIPS_FPU_EMU_INC_STATS(loads);
- if (get_user(val, va)) {
+ if (!access_ok(VERIFY_READ, va, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (__get_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
SITOREG(val, MIPSInst_FD(ir));
break;
MIPS_FPU_EMU_INC_STATS(stores);
SIFROMREG(val, MIPSInst_FS(ir));
- if (put_user(val, va)) {
+ if (!access_ok(VERIFY_WRITE, va, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (put_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
break;
case madd_s_op:
xcp->regs[MIPSInst_FT(ir)]);
MIPS_FPU_EMU_INC_STATS(loads);
- if (get_user(val, va)) {
+ if (!access_ok(VERIFY_READ, va, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (__get_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
DITOREG(val, MIPSInst_FD(ir));
break;
MIPS_FPU_EMU_INC_STATS(stores);
DIFROMREG(val, MIPSInst_FS(ir));
- if (put_user(val, va)) {
+ if (!access_ok(VERIFY_WRITE, va, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
return SIGBUS;
}
+ if (__put_user(val, va)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = va;
+ return SIGSEGV;
+ }
break;
case madd_d_op:
}
int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
- int has_fpu)
+ int has_fpu, void *__user *fault_addr)
{
unsigned long oldepc, prevepc;
mips_instruction insn;
do {
prevepc = xcp->cp0_epc;
- if (get_user(insn, (mips_instruction __user *) xcp->cp0_epc)) {
+ if (!access_ok(VERIFY_READ, xcp->cp0_epc, sizeof(mips_instruction))) {
MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)xcp->cp0_epc;
return SIGBUS;
}
+ if (__get_user(insn, (mips_instruction __user *) xcp->cp0_epc)) {
+ MIPS_FPU_EMU_INC_STATS(errors);
+ *fault_addr = (mips_instruction __user *)xcp->cp0_epc;
+ return SIGSEGV;
+ }
if (insn == 0)
xcp->cp0_epc += 4; /* skip nops */
else {
*/
/* convert to ieee library modes */
ieee754_csr.rm = ieee_rm[ieee754_csr.rm];
- sig = cop1Emulate(xcp, ctx);
+ sig = cop1Emulate(xcp, ctx, fault_addr);
/* revert to mips rounding mode */
ieee754_csr.rm = mips_rm[ieee754_csr.rm];
}
return plat_dma_supported(dev, mask);
}
-void mips_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)
{
BUG_ON(direction == DMA_NONE);
__dma_sync((unsigned long)vaddr, size, direction);
}
+EXPORT_SYMBOL(dma_cache_sync);
+
static struct dma_map_ops mips_default_dma_map_ops = {
.alloc_coherent = mips_dma_alloc_coherent,
.free_coherent = mips_dma_free_coherent,
*/
static inline int mips_sc_is_activated(struct cpuinfo_mips *c)
{
+ unsigned int config2 = read_c0_config2();
+ unsigned int tmp;
+
/* Check the bypass bit (L2B) */
switch (c->cputype) {
case CPU_34K:
c->scache.linesz = 2 << tmp;
else
return 0;
+ return 1;
}
static inline int __init mips_sc_probe(void)
__asm__ __volatile__ (
" .set mips3 \n"
+ " .set push \n"
+ " .set noreorder \n"
+ " .set nomacro \n"
" ld %0, %1 \n"
+ " .set pop \n"
" lbu %0, (%0) \n"
" .set mips0 \n"
: "=r" (res)
- : "m" (vaddr));
+ : "R" (vaddr));
write_c0_status(sr);
ssnop_4();
__asm__ __volatile__ (
" .set mips3 \n"
+ " .set push \n"
+ " .set noreorder \n"
+ " .set nomacro \n"
" ld %0, %1 \n"
+ " .set pop \n"
" sb %2, (%0) \n"
" .set mips0 \n"
: "=&r" (tmp)
- : "m" (vaddr), "r" (c));
+ : "R" (vaddr), "r" (c));
write_c0_status(sr);
ssnop_4();
enum swarm_rtc_type {
RTC_NONE,
RTC_XICOR,
- RTC_M4LT81
+ RTC_M41T81,
};
enum swarm_rtc_type swarm_rtc_type;
sec = xicor_get_time();
break;
- case RTC_M4LT81:
+ case RTC_M41T81:
sec = m41t81_get_time();
break;
case RTC_XICOR:
return xicor_set_time(sec);
- case RTC_M4LT81:
+ case RTC_M41T81:
return m41t81_set_time(sec);
case RTC_NONE:
if (xicor_probe())
swarm_rtc_type = RTC_XICOR;
if (m41t81_probe())
- swarm_rtc_type = RTC_M4LT81;
+ swarm_rtc_type = RTC_M41T81;
#ifdef CONFIG_VT
screen_info = (struct screen_info) {
unsigned long long ll;
unsigned l[2];
} tsc64, result;
- unsigned long tsc, tmp;
+ unsigned long tmp;
unsigned product[3]; /* 96-bit intermediate value */
/* cnt32_to_63() is not safe with preemption */
preempt_disable();
- /* read the TSC value
- */
- tsc = get_cycles();
-
- /* expand to 64-bits.
+ /* expand the tsc to 64-bits.
* - sched_clock() must be called once a minute or better or the
* following will go horribly wrong - see cnt32_to_63()
*/
- tsc64.ll = cnt32_to_63(tsc) & 0x7fffffffffffffffULL;
+ tsc64.ll = cnt32_to_63(get_cycles()) & 0x7fffffffffffffffULL;
preempt_enable();
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
struct pt_regs;
-int restore_sigcontext(struct pt_regs *, struct sigcontext __user *, long *);
+int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
int setup_sigcontext(struct sigcontext __user *, struct pt_regs *);
void do_signal(struct pt_regs *regs);
#endif
return ret;
}
+/* The assembly shim for this function arranges to ignore the return value. */
long compat_sys_rt_sigreturn(struct pt_regs *regs)
{
struct compat_rt_sigframe __user *frame =
(struct compat_rt_sigframe __user *) compat_ptr(regs->sp);
sigset_t set;
- long r0;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
+ if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
if (compat_sys_sigaltstack(&frame->uc.uc_stack, NULL, regs) != 0)
goto badframe;
- return r0;
+ return 0;
badframe:
force_sig(SIGSEGV, current);
lw r20, r20
/* Jump to syscall handler. */
- jalr r20; .Lhandle_syscall_link:
- FEEDBACK_REENTER(handle_syscall)
+ jalr r20
+.Lhandle_syscall_link: /* value of "lr" after "jalr r20" above */
/*
* Write our r0 onto the stack so it gets restored instead
PTREGS_PTR(r29, PTREGS_OFFSET_REG(0))
sw r29, r0
+.Lsyscall_sigreturn_skip:
+ FEEDBACK_REENTER(handle_syscall)
+
/* Do syscall trace again, if requested. */
lw r30, r31
andi r30, r30, _TIF_SYSCALL_TRACE
}; \
STD_ENDPROC(_##x)
+/*
+ * Special-case sigreturn to not write r0 to the stack on return.
+ * This is technically more efficient, but it also avoids difficulties
+ * in the 64-bit OS when handling 32-bit compat code, since we must not
+ * sign-extend r0 for the sigreturn return-value case.
+ */
+#define PTREGS_SYSCALL_SIGRETURN(x, reg) \
+ STD_ENTRY(_##x); \
+ addli lr, lr, .Lsyscall_sigreturn_skip - .Lhandle_syscall_link; \
+ { \
+ PTREGS_PTR(reg, PTREGS_OFFSET_BASE); \
+ j x \
+ }; \
+ STD_ENDPROC(_##x)
+
PTREGS_SYSCALL(sys_execve, r3)
PTREGS_SYSCALL(sys_sigaltstack, r2)
-PTREGS_SYSCALL(sys_rt_sigreturn, r0)
+PTREGS_SYSCALL_SIGRETURN(sys_rt_sigreturn, r0)
PTREGS_SYSCALL(sys_cmpxchg_badaddr, r1)
/* Save additional callee-saves to pt_regs, put address in r4 and jump. */
childregs->regs[0] = 0; /* return value is zero */
childregs->sp = sp; /* override with new user stack pointer */
+ /*
+ * If CLONE_SETTLS is set, set "tp" in the new task to "r4",
+ * which is passed in as arg #5 to sys_clone().
+ */
+ if (clone_flags & CLONE_SETTLS)
+ childregs->tp = regs->regs[4];
+
/*
* Copy the callee-saved registers from the passed pt_regs struct
* into the context-switch callee-saved registers area.
return __switch_to(prev, next, next_current_ksp0(next));
}
+/* Note there is an implicit fifth argument if (clone_flags & CLONE_SETTLS). */
SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
void __user *, parent_tidptr, void __user *, child_tidptr,
struct pt_regs *, regs)
*/
int restore_sigcontext(struct pt_regs *regs,
- struct sigcontext __user *sc, long *pr0)
+ struct sigcontext __user *sc)
{
int err = 0;
int i;
regs->faultnum = INT_SWINT_1_SIGRETURN;
- err |= __get_user(*pr0, &sc->gregs[0]);
return err;
}
-/* sigreturn() returns long since it restores r0 in the interrupted code. */
+/* The assembly shim for this function arranges to ignore the return value. */
SYSCALL_DEFINE1(rt_sigreturn, struct pt_regs *, regs)
{
struct rt_sigframe __user *frame =
(struct rt_sigframe __user *)(regs->sp);
sigset_t set;
- long r0;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
+ if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
goto badframe;
- return r0;
+ return 0;
badframe:
force_sig(SIGSEGV, current);
if (heap > 0x3fffffffffffUL)
error("Destination address too large");
#else
- if (heap > ((-__PAGE_OFFSET-(512<<20)-1) & 0x7fffffff))
+ if (heap > ((-__PAGE_OFFSET-(128<<20)-1) & 0x7fffffff))
error("Destination address too large");
#endif
#ifndef CONFIG_RELOCATABLE
#define BIOS_BEGIN 0x000a0000
#define BIOS_END 0x00100000
+#define BIOS_ROM_BASE 0xffe00000
+#define BIOS_ROM_END 0xffffffff
+
#ifdef __KERNEL__
/* see comment in arch/x86/kernel/e820.c */
extern struct e820map e820;
#define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
#define KVM_MIN_FREE_MMU_PAGES 5
#define KVM_REFILL_PAGES 25
-#define KVM_MAX_CPUID_ENTRIES 40
+#define KVM_MAX_CPUID_ENTRIES 80
#define KVM_NR_FIXED_MTRR_REGION 88
#define KVM_NR_VAR_MTRR 8
obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
obj-y += tsc.o io_delay.o rtc.o
obj-y += pci-iommu_table.o
+obj-y += resource.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
obj-y += process.o
setup_apic_nmi_watchdog(NULL);
apic_pm_activate();
+
+ /*
+ * Now that local APIC setup is completed for BP, configure the fault
+ * handling for interrupt remapping.
+ */
+ if (!smp_processor_id() && intr_remapping_enabled)
+ enable_drhd_fault_handling();
+
}
#ifdef CONFIG_X86_X2APIC
{
struct irq_cfg *cfg = data->chip_data;
int i, do_unmask_irq = 0, irq = data->irq;
- struct irq_desc *desc = irq_to_desc(irq);
unsigned long v;
irq_complete_move(cfg);
#ifdef CONFIG_GENERIC_PENDING_IRQ
/* If we are moving the irq we need to mask it */
- if (unlikely(desc->status & IRQ_MOVE_PENDING)) {
+ if (unlikely(irq_to_desc(irq)->status & IRQ_MOVE_PENDING)) {
do_unmask_irq = 1;
mask_ioapic(cfg);
}
msg.data |= MSI_DATA_VECTOR(cfg->vector);
msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK;
msg.address_lo |= MSI_ADDR_DEST_ID(dest);
+ msg.address_hi = MSI_ADDR_BASE_HI | MSI_ADDR_EXT_DEST_ID(dest);
dmar_msi_write(irq, &msg);
/* need to update phys_pkg_id */
apic->phys_pkg_id = apicid_phys_pkg_id;
}
-
- /*
- * Now that apic routing model is selected, configure the
- * fault handling for intr remapping.
- */
- if (intr_remapping_enabled)
- enable_drhd_fault_handling();
}
/* Same for both flat and physical. */
#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
#endif
+/* Number of possible pages in the lowmem region */
+LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
+
/* Enough space to fit pagetables for the low memory linear map */
-MAPPING_BEYOND_END = \
- PAGE_TABLE_SIZE(((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT) << PAGE_SHIFT
+MAPPING_BEYOND_END = PAGE_TABLE_SIZE(LOWMEM_PAGES) << PAGE_SHIFT
/*
* Worst-case size of the kernel mapping we need to make:
- * the worst-case size of the kernel itself, plus the extra we need
- * to map for the linear map.
+ * a relocatable kernel can live anywhere in lowmem, so we need to be able
+ * to map all of lowmem.
*/
-KERNEL_PAGES = (KERNEL_IMAGE_SIZE + MAPPING_BEYOND_END)>>PAGE_SHIFT
+KERNEL_PAGES = LOWMEM_PAGES
INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_PAGES) * PAGE_SIZE_asm
RESERVE_BRK(pagetables, INIT_MAP_SIZE)
__PAGE_ALIGNED_BSS
.align PAGE_SIZE_asm
#ifdef CONFIG_X86_PAE
-initial_pg_pmd:
+ENTRY(initial_pg_pmd)
.fill 1024*KPMDS,4,0
#else
ENTRY(initial_page_table)
.fill 1024,4,0
#endif
-initial_pg_fixmap:
+ENTRY(initial_pg_fixmap)
.fill 1024,4,0
ENTRY(empty_zero_page)
.fill 4096,1,0
#define HPET_DEV_FSB_CAP 0x1000
#define HPET_DEV_PERI_CAP 0x2000
+#define HPET_MIN_CYCLES 128
+#define HPET_MIN_PROG_DELTA (HPET_MIN_CYCLES + (HPET_MIN_CYCLES >> 1))
+
#define EVT_TO_HPET_DEV(evt) container_of(evt, struct hpet_dev, evt)
/*
/* Calculate the min / max delta */
hpet_clockevent.max_delta_ns = clockevent_delta2ns(0x7FFFFFFF,
&hpet_clockevent);
- /* 5 usec minimum reprogramming delta. */
- hpet_clockevent.min_delta_ns = 5000;
+ /* Setup minimum reprogramming delta. */
+ hpet_clockevent.min_delta_ns = clockevent_delta2ns(HPET_MIN_PROG_DELTA,
+ &hpet_clockevent);
/*
* Start hpet with the boot cpu mask and make it
* the wraparound into account) nor a simple count down event
* mode. Further the write to the comparator register is
* delayed internally up to two HPET clock cycles in certain
- * chipsets (ATI, ICH9,10). We worked around that by reading
- * back the compare register, but that required another
- * workaround for ICH9,10 chips where the first readout after
- * write can return the old stale value. We already have a
- * minimum delta of 5us enforced, but a NMI or SMI hitting
+ * chipsets (ATI, ICH9,10). Some newer AMD chipsets have even
+ * longer delays. We worked around that by reading back the
+ * compare register, but that required another workaround for
+ * ICH9,10 chips where the first readout after write can
+ * return the old stale value. We already had a minimum
+ * programming delta of 5us enforced, but a NMI or SMI hitting
* between the counter readout and the comparator write can
* move us behind that point easily. Now instead of reading
* the compare register back several times, we make the ETIME
* decision based on the following: Return ETIME if the
- * counter value after the write is less than 8 HPET cycles
+ * counter value after the write is less than HPET_MIN_CYCLES
* away from the event or if the counter is already ahead of
- * the event.
+ * the event. The minimum programming delta for the generic
+ * clockevents code is set to 1.5 * HPET_MIN_CYCLES.
*/
res = (s32)(cnt - hpet_readl(HPET_COUNTER));
- return res < 8 ? -ETIME : 0;
+ return res < HPET_MIN_CYCLES ? -ETIME : 0;
}
static void hpet_legacy_set_mode(enum clock_event_mode mode,
--- /dev/null
+#include <linux/ioport.h>
+#include <asm/e820.h>
+
+static void resource_clip(struct resource *res, resource_size_t start,
+ resource_size_t end)
+{
+ resource_size_t low = 0, high = 0;
+
+ if (res->end < start || res->start > end)
+ return; /* no conflict */
+
+ if (res->start < start)
+ low = start - res->start;
+
+ if (res->end > end)
+ high = res->end - end;
+
+ /* Keep the area above or below the conflict, whichever is larger */
+ if (low > high)
+ res->end = start - 1;
+ else
+ res->start = end + 1;
+}
+
+static void remove_e820_regions(struct resource *avail)
+{
+ int i;
+ struct e820entry *entry;
+
+ for (i = 0; i < e820.nr_map; i++) {
+ entry = &e820.map[i];
+
+ resource_clip(avail, entry->addr,
+ entry->addr + entry->size - 1);
+ }
+}
+
+void arch_remove_reservations(struct resource *avail)
+{
+ /* Trim out BIOS areas (low 1MB and high 2MB) and E820 regions */
+ if (avail->flags & IORESOURCE_MEM) {
+ if (avail->start < BIOS_END)
+ avail->start = BIOS_END;
+ resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END);
+
+ remove_e820_regions(avail);
+ }
+}
x86_init.oem.arch_setup();
- resource_alloc_from_bottom = 0;
iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1;
setup_memory_map();
parse_setup_data();
* Setup init_xstate_buf to represent the init state of
* all the features managed by the xsave
*/
- init_xstate_buf = alloc_bootmem(xstate_size);
+ init_xstate_buf = alloc_bootmem_align(xstate_size,
+ __alignof__(struct xsave_struct));
init_xstate_buf->i387.mxcsr = MXCSR_DEFAULT;
clts();
static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
{
switch (func) {
+ case 0x00000001:
+ /* Mask out xsave bit as long as it is not supported by SVM */
+ entry->ecx &= ~(bit(X86_FEATURE_XSAVE));
+ break;
case 0x80000001:
if (nested)
entry->ecx |= (1 << 2); /* Set SVM bit */
return PT_PDPE_LEVEL;
}
-static inline u32 bit(int bitno)
-{
- return 1 << (bitno & 31);
-}
-
static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
{
struct kvm_cpuid_entry2 *best;
u64 __read_mostly host_xcr0;
-static inline u32 bit(int bitno)
-{
- return 1 << (bitno & 31);
-}
-
static void kvm_on_user_return(struct user_return_notifier *urn)
{
unsigned slot;
#ifdef CONFIG_CPU_FREQ
struct cpufreq_policy policy;
memset(&policy, 0, sizeof(policy));
- cpufreq_get_policy(&policy, get_cpu());
+ cpu = get_cpu();
+ cpufreq_get_policy(&policy, cpu);
if (policy.cpuinfo.max_freq)
max_tsc_khz = policy.cpuinfo.max_freq;
+ put_cpu();
#endif
cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block,
CPUFREQ_TRANSITION_NOTIFIER);
mmu_reset_needed |= kvm_read_cr4(vcpu) != sregs->cr4;
kvm_x86_ops->set_cr4(vcpu, sregs->cr4);
+ if (sregs->cr4 & X86_CR4_OSXSAVE)
+ update_cpuid(vcpu);
if (!is_long_mode(vcpu) && is_pae(vcpu)) {
load_pdptrs(vcpu, vcpu->arch.walk_mmu, vcpu->arch.cr3);
mmu_reset_needed = 1;
return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
}
+static inline u32 bit(int bitno)
+{
+ return 1 << (bitno & 31);
+}
+
void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq);
{
lguest_data.pgdir = cr3;
lazy_hcall1(LHCALL_NEW_PGTABLE, cr3);
- cr3_changed = true;
+
+ /* These two page tables are simple, linear, and used during boot */
+ if (cr3 != __pa(swapper_pg_dir) && cr3 != __pa(initial_page_table))
+ cr3_changed = true;
}
static unsigned long lguest_read_cr3(void)
* to forget all of them. Fortunately, this is very rare.
*
* ... except in early boot when the kernel sets up the initial pagetables,
- * which makes booting astonishingly slow: 1.83 seconds! So we don't even tell
- * the Host anything changed until we've done the first page table switch,
- * which brings boot back to 0.25 seconds.
+ * which makes booting astonishingly slow: 48 seconds! So we don't even tell
+ * the Host anything changed until we've done the first real page table switch,
+ * which brings boot back to 4.3 seconds.
*/
static void lguest_set_pte(pte_t *ptep, pte_t pteval)
{
clockevents_register_device(&lguest_clockevent);
/* Finally, we unblock the timer interrupt. */
- enable_lguest_irq(0);
+ clear_bit(0, lguest_data.blocked_interrupts);
}
/*
*/
switch_to_new_gdt(0);
- /* We actually boot with all memory mapped, but let's say 128MB. */
- max_pfn_mapped = (128*1024*1024) >> PAGE_SHIFT;
-
/*
* The Host<->Guest Switcher lives at the top of our address space, and
* the Host told us how big it is when we made LGUEST_INIT hypercall:
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#include <asm/processor-flags.h>
+#include <asm/pgtable.h>
/*G:020
* Our story starts with the kernel booting into startup_32 in
/* Set up the initial stack so we can run C code. */
movl $(init_thread_union+THREAD_SIZE),%esp
+ call init_pagetables
+
/* Jumps are relative: we're running __PAGE_OFFSET too low. */
jmp lguest_init+__PAGE_OFFSET
+/*
+ * Initialize page tables. This creates a PDE and a set of page
+ * tables, which are located immediately beyond __brk_base. The variable
+ * _brk_end is set up to point to the first "safe" location.
+ * Mappings are created both at virtual address 0 (identity mapping)
+ * and PAGE_OFFSET for up to _end.
+ *
+ * FIXME: This code is taken verbatim from arch/x86/kernel/head_32.S: they
+ * don't have a stack at this point, so we can't just use call and ret.
+ */
+init_pagetables:
+#if PTRS_PER_PMD > 1
+#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD)
+#else
+#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
+#endif
+#define pa(X) ((X) - __PAGE_OFFSET)
+
+/* Enough space to fit pagetables for the low memory linear map */
+MAPPING_BEYOND_END = \
+ PAGE_TABLE_SIZE(((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT) << PAGE_SHIFT
+#ifdef CONFIG_X86_PAE
+
+ /*
+ * In PAE mode initial_page_table is statically defined to contain
+ * enough entries to cover the VMSPLIT option (that is the top 1, 2 or 3
+ * entries). The identity mapping is handled by pointing two PGD entries
+ * to the first kernel PMD.
+ *
+ * Note the upper half of each PMD or PTE are always zero at this stage.
+ */
+
+#define KPMDS (((-__PAGE_OFFSET) >> 30) & 3) /* Number of kernel PMDs */
+
+ xorl %ebx,%ebx /* %ebx is kept at zero */
+
+ movl $pa(__brk_base), %edi
+ movl $pa(initial_pg_pmd), %edx
+ movl $PTE_IDENT_ATTR, %eax
+10:
+ leal PDE_IDENT_ATTR(%edi),%ecx /* Create PMD entry */
+ movl %ecx,(%edx) /* Store PMD entry */
+ /* Upper half already zero */
+ addl $8,%edx
+ movl $512,%ecx
+11:
+ stosl
+ xchgl %eax,%ebx
+ stosl
+ xchgl %eax,%ebx
+ addl $0x1000,%eax
+ loop 11b
+
+ /*
+ * End condition: we must map up to the end + MAPPING_BEYOND_END.
+ */
+ movl $pa(_end) + MAPPING_BEYOND_END + PTE_IDENT_ATTR, %ebp
+ cmpl %ebp,%eax
+ jb 10b
+1:
+ addl $__PAGE_OFFSET, %edi
+ movl %edi, pa(_brk_end)
+ shrl $12, %eax
+ movl %eax, pa(max_pfn_mapped)
+
+ /* Do early initialization of the fixmap area */
+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
+ movl %eax,pa(initial_pg_pmd+0x1000*KPMDS-8)
+#else /* Not PAE */
+
+page_pde_offset = (__PAGE_OFFSET >> 20);
+
+ movl $pa(__brk_base), %edi
+ movl $pa(initial_page_table), %edx
+ movl $PTE_IDENT_ATTR, %eax
+10:
+ leal PDE_IDENT_ATTR(%edi),%ecx /* Create PDE entry */
+ movl %ecx,(%edx) /* Store identity PDE entry */
+ movl %ecx,page_pde_offset(%edx) /* Store kernel PDE entry */
+ addl $4,%edx
+ movl $1024, %ecx
+11:
+ stosl
+ addl $0x1000,%eax
+ loop 11b
+ /*
+ * End condition: we must map up to the end + MAPPING_BEYOND_END.
+ */
+ movl $pa(_end) + MAPPING_BEYOND_END + PTE_IDENT_ATTR, %ebp
+ cmpl %ebp,%eax
+ jb 10b
+ addl $__PAGE_OFFSET, %edi
+ movl %edi, pa(_brk_end)
+ shrl $12, %eax
+ movl %eax, pa(max_pfn_mapped)
+
+ /* Do early initialization of the fixmap area */
+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
+ movl %eax,pa(initial_page_table+0xffc)
+#endif
+ ret
+
/*G:055
* We create a macro which puts the assembler code between lgstart_ and lgend_
* markers. These templates are put in the .text section: they can't be
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
- resource_size_t start = round_down(res->end - size + 1, align);
+ resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
-
- /*
- * If we're avoiding ISA aliases, the largest contiguous I/O
- * port space is 256 bytes. Clearing bits 9 and 10 preserves
- * all 256-byte and smaller alignments, so the result will
- * still be correctly aligned.
- */
- if (!skip_isa_ioresource_align(dev))
- start &= ~0x300;
- } else if (res->flags & IORESOURCE_MEM) {
- if (start < BIOS_END)
- start = res->end; /* fail; no space */
+ if (skip_isa_ioresource_align(dev))
+ return start;
+ if (start & 0x300)
+ start = (start + 0x3ff) & ~0x3ff;
}
return start;
}
export CPPFLAGS_vdso.lds += -P -C
-VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -Wl,-soname=linux-vdso.so.1 \
+VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \
-Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
$(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so
vdso32-images = $(vdso32.so-y:%=vdso32-%.so)
CPPFLAGS_vdso32.lds = $(CPPFLAGS_vdso.lds)
-VDSO_LDFLAGS_vdso32.lds = -m elf_i386 -Wl,-soname=linux-gate.so.1
+VDSO_LDFLAGS_vdso32.lds = -m32 -Wl,-soname=linux-gate.so.1
# This makes sure the $(obj) subdirectory exists even though vdso32/
# is not a kbuild sub-make subdirectory.
for (i = 0; i < iov_count; i++) {
unsigned long uaddr = (unsigned long)iov[i].iov_base;
+ if (!iov[i].iov_len)
+ return -EINVAL;
+
if (uaddr & queue_dma_alignment(q)) {
unaligned = 1;
break;
}
- if (!iov[i].iov_len)
- return -EINVAL;
}
if (unaligned || (q->dma_pad_mask & len) || map_data)
return 0;
fbio = bio;
- cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
+ cluster = blk_queue_cluster(q);
seg_size = 0;
nr_phys_segs = 0;
for_each_bio(bio) {
static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio,
struct bio *nxt)
{
- if (!test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags))
+ if (!blk_queue_cluster(q))
return 0;
if (bio->bi_seg_back_size + nxt->bi_seg_front_size >
int nsegs, cluster;
nsegs = 0;
- cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
+ cluster = blk_queue_cluster(q);
/*
* for each bio in rq
lim->alignment_offset = 0;
lim->io_opt = 0;
lim->misaligned = 0;
- lim->no_cluster = 0;
+ lim->cluster = 1;
}
EXPORT_SYMBOL(blk_set_default_limits);
EXPORT_SYMBOL(blk_queue_bounce_limit);
/**
- * blk_queue_max_hw_sectors - set max sectors for a request for this queue
- * @q: the request queue for the device
+ * blk_limits_max_hw_sectors - set hard and soft limit of max sectors for request
+ * @limits: the queue limits
* @max_hw_sectors: max hardware sectors in the usual 512b unit
*
* Description:
* per-device basis in /sys/block/<device>/queue/max_sectors_kb.
* The soft limit can not exceed max_hw_sectors.
**/
-void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors)
+void blk_limits_max_hw_sectors(struct queue_limits *limits, unsigned int max_hw_sectors)
{
if ((max_hw_sectors << 9) < PAGE_CACHE_SIZE) {
max_hw_sectors = 1 << (PAGE_CACHE_SHIFT - 9);
__func__, max_hw_sectors);
}
- q->limits.max_hw_sectors = max_hw_sectors;
- q->limits.max_sectors = min_t(unsigned int, max_hw_sectors,
- BLK_DEF_MAX_SECTORS);
+ limits->max_hw_sectors = max_hw_sectors;
+ limits->max_sectors = min_t(unsigned int, max_hw_sectors,
+ BLK_DEF_MAX_SECTORS);
+}
+EXPORT_SYMBOL(blk_limits_max_hw_sectors);
+
+/**
+ * blk_queue_max_hw_sectors - set max sectors for a request for this queue
+ * @q: the request queue for the device
+ * @max_hw_sectors: max hardware sectors in the usual 512b unit
+ *
+ * Description:
+ * See description for blk_limits_max_hw_sectors().
+ **/
+void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors)
+{
+ blk_limits_max_hw_sectors(&q->limits, max_hw_sectors);
}
EXPORT_SYMBOL(blk_queue_max_hw_sectors);
void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b)
{
blk_stack_limits(&t->limits, &b->limits, 0);
-
- if (!t->queue_lock)
- WARN_ON_ONCE(1);
- else if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) {
- unsigned long flags;
- spin_lock_irqsave(t->queue_lock, flags);
- queue_flag_clear(QUEUE_FLAG_CLUSTER, t);
- spin_unlock_irqrestore(t->queue_lock, flags);
- }
}
EXPORT_SYMBOL(blk_queue_stack_limits);
t->io_min = max(t->io_min, b->io_min);
t->io_opt = lcm(t->io_opt, b->io_opt);
- t->no_cluster |= b->no_cluster;
+ t->cluster &= b->cluster;
t->discard_zeroes_data &= b->discard_zeroes_data;
/* Physical block size a multiple of the logical block size? */
sector_t offset)
{
struct request_queue *t = disk->queue;
- struct request_queue *b = bdev_get_queue(bdev);
if (bdev_stack_limits(&t->limits, bdev, offset >> 9) < 0) {
char top[BDEVNAME_SIZE], bottom[BDEVNAME_SIZE];
printk(KERN_NOTICE "%s: Warning: Device %s is misaligned\n",
top, bottom);
}
-
- if (!t->queue_lock)
- WARN_ON_ONCE(1);
- else if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) {
- unsigned long flags;
-
- spin_lock_irqsave(t->queue_lock, flags);
- if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags))
- queue_flag_clear(QUEUE_FLAG_CLUSTER, t);
- spin_unlock_irqrestore(t->queue_lock, flags);
- }
}
EXPORT_SYMBOL(disk_stack_limits);
static ssize_t queue_max_segment_size_show(struct request_queue *q, char *page)
{
- if (test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags))
+ if (blk_queue_cluster(q))
return queue_var_show(queue_max_segment_size(q), (page));
return queue_var_show(PAGE_CACHE_SIZE, (page));
tg->slice_end[rw], jiffies);
}
+static inline void throtl_set_slice_end(struct throtl_data *td,
+ struct throtl_grp *tg, bool rw, unsigned long jiffy_end)
+{
+ tg->slice_end[rw] = roundup(jiffy_end, throtl_slice);
+}
+
static inline void throtl_extend_slice(struct throtl_data *td,
struct throtl_grp *tg, bool rw, unsigned long jiffy_end)
{
if (throtl_slice_used(td, tg, rw))
return;
+ /*
+ * A bio has been dispatched. Also adjust slice_end. It might happen
+ * that initially cgroup limit was very low resulting in high
+ * slice_end, but later limit was bumped up and bio was dispached
+ * sooner, then we need to reduce slice_end. A high bogus slice_end
+ * is bad because it does not allow new slice to start.
+ */
+
+ throtl_set_slice_end(td, tg, rw, jiffies + throtl_slice);
+
time_elapsed = jiffies - tg->slice_start[rw];
nr_slices = time_elapsed / throtl_slice;
struct throtl_grp *tg;
struct hlist_node *pos, *n;
- /*
- * Make sure atomic_inc() effects from
- * throtl_update_blkio_group_read_bps(), group of functions are
- * visible.
- * Is this required or smp_mb__after_atomic_inc() was suffcient
- * after the atomic_inc().
- */
- smp_rmb();
if (!atomic_read(&td->limits_changed))
return;
throtl_log(td, "limit changed =%d", atomic_read(&td->limits_changed));
- hlist_for_each_entry_safe(tg, pos, n, &td->tg_list, tg_node) {
- /*
- * Do I need an smp_rmb() here to make sure tg->limits_changed
- * update is visible. I am relying on smp_rmb() at the
- * beginning of function and not putting a new one here.
- */
+ /*
+ * Make sure updates from throtl_update_blkio_group_read_bps() group
+ * of functions to tg->limits_changed are visible. We do not
+ * want update td->limits_changed to be visible but update to
+ * tg->limits_changed not being visible yet on this cpu. Hence
+ * the read barrier.
+ */
+ smp_rmb();
+ hlist_for_each_entry_safe(tg, pos, n, &td->tg_list, tg_node) {
if (throtl_tg_on_rr(tg) && tg->limits_changed) {
throtl_log_tg(td, tg, "limit change rbps=%llu wbps=%llu"
" riops=%u wiops=%u", tg->bps[READ],
InquiryData_struct *inq_buff = NULL;
for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
+ if (!h->drv[logvol])
+ continue
if (memcmp(h->drv[logvol]->LunID, drv->LunID,
sizeof(drv->LunID)) == 0) {
FOUND = 1;
}
shs = drbd_cmd_handler[cmd].pkt_size - sizeof(union p_header);
- rv = drbd_recv(mdev, &header->h80.payload, shs);
- if (unlikely(rv != shs)) {
- dev_err(DEV, "short read while reading sub header: rv=%d\n", rv);
- goto err_out;
- }
-
if (packet_size - shs > 0 && !drbd_cmd_handler[cmd].expect_payload) {
dev_err(DEV, "No payload expected %s l:%d\n", cmdname(cmd), packet_size);
goto err_out;
}
+ if (shs) {
+ rv = drbd_recv(mdev, &header->h80.payload, shs);
+ if (unlikely(rv != shs)) {
+ dev_err(DEV, "short read while reading sub header: rv=%d\n", rv);
+ goto err_out;
+ }
+ }
+
rv = drbd_cmd_handler[cmd].function(mdev, cmd, packet_size - shs);
if (unlikely(!rv)) {
}
/* completion of master bio is outside of spinlock.
- * If you need it irqsave, do it your self! */
+ * If you need it irqsave, do it your self!
+ * Which means: don't use from bio endio callback. */
static inline int req_mod(struct drbd_request *req,
enum drbd_req_event what)
{
*/
void drbd_endio_pri(struct bio *bio, int error)
{
+ unsigned long flags;
struct drbd_request *req = bio->bi_private;
struct drbd_conf *mdev = req->mdev;
+ struct bio_and_error m;
enum drbd_req_event what;
int uptodate = bio_flagged(bio, BIO_UPTODATE);
bio_put(req->private_bio);
req->private_bio = ERR_PTR(error);
- req_mod(req, what);
+ /* not req_mod(), we need irqsave here! */
+ spin_lock_irqsave(&mdev->req_lock, flags);
+ __req_mod(req, what, &m);
+ spin_unlock_irqrestore(&mdev->req_lock, flags);
+
+ if (m.bio)
+ complete_master_bio(mdev, &m);
}
int w_read_retry_remote(struct drbd_conf *mdev, struct drbd_work *w, int cancel)
}
#undef OLD_KEY_MAX
-static int evdev_handle_get_keycode(struct input_dev *dev,
- void __user *p, size_t size)
+static int evdev_handle_get_keycode(struct input_dev *dev, void __user *p)
{
- struct input_keymap_entry ke;
+ struct input_keymap_entry ke = {
+ .len = sizeof(unsigned int),
+ .flags = 0,
+ };
+ int __user *ip = (int __user *)p;
int error;
- memset(&ke, 0, sizeof(ke));
-
- if (size == sizeof(unsigned int[2])) {
- /* legacy case */
- int __user *ip = (int __user *)p;
+ /* legacy case */
+ if (copy_from_user(ke.scancode, p, sizeof(unsigned int)))
+ return -EFAULT;
- if (copy_from_user(ke.scancode, p, sizeof(unsigned int)))
- return -EFAULT;
+ error = input_get_keycode(dev, &ke);
+ if (error)
+ return error;
- ke.len = sizeof(unsigned int);
- ke.flags = 0;
+ if (put_user(ke.keycode, ip + 1))
+ return -EFAULT;
- error = input_get_keycode(dev, &ke);
- if (error)
- return error;
+ return 0;
+}
- if (put_user(ke.keycode, ip + 1))
- return -EFAULT;
+static int evdev_handle_get_keycode_v2(struct input_dev *dev, void __user *p)
+{
+ struct input_keymap_entry ke;
+ int error;
- } else {
- size = min(size, sizeof(ke));
+ if (copy_from_user(&ke, p, sizeof(ke)))
+ return -EFAULT;
- if (copy_from_user(&ke, p, size))
- return -EFAULT;
+ error = input_get_keycode(dev, &ke);
+ if (error)
+ return error;
- error = input_get_keycode(dev, &ke);
- if (error)
- return error;
+ if (copy_to_user(p, &ke, sizeof(ke)))
+ return -EFAULT;
- if (copy_to_user(p, &ke, size))
- return -EFAULT;
- }
return 0;
}
-static int evdev_handle_set_keycode(struct input_dev *dev,
- void __user *p, size_t size)
+static int evdev_handle_set_keycode(struct input_dev *dev, void __user *p)
{
- struct input_keymap_entry ke;
-
- memset(&ke, 0, sizeof(ke));
+ struct input_keymap_entry ke = {
+ .len = sizeof(unsigned int),
+ .flags = 0,
+ };
+ int __user *ip = (int __user *)p;
- if (size == sizeof(unsigned int[2])) {
- /* legacy case */
- int __user *ip = (int __user *)p;
+ if (copy_from_user(ke.scancode, p, sizeof(unsigned int)))
+ return -EFAULT;
- if (copy_from_user(ke.scancode, p, sizeof(unsigned int)))
- return -EFAULT;
+ if (get_user(ke.keycode, ip + 1))
+ return -EFAULT;
- if (get_user(ke.keycode, ip + 1))
- return -EFAULT;
+ return input_set_keycode(dev, &ke);
+}
- ke.len = sizeof(unsigned int);
- ke.flags = 0;
+static int evdev_handle_set_keycode_v2(struct input_dev *dev, void __user *p)
+{
+ struct input_keymap_entry ke;
- } else {
- size = min(size, sizeof(ke));
+ if (copy_from_user(&ke, p, sizeof(ke)))
+ return -EFAULT;
- if (copy_from_user(&ke, p, size))
- return -EFAULT;
-
- if (ke.len > sizeof(ke.scancode))
- return -EINVAL;
- }
+ if (ke.len > sizeof(ke.scancode))
+ return -EINVAL;
return input_set_keycode(dev, &ke);
}
return evdev_grab(evdev, client);
else
return evdev_ungrab(evdev, client);
+
+ case EVIOCGKEYCODE:
+ return evdev_handle_get_keycode(dev, p);
+
+ case EVIOCSKEYCODE:
+ return evdev_handle_set_keycode(dev, p);
+
+ case EVIOCGKEYCODE_V2:
+ return evdev_handle_get_keycode_v2(dev, p);
+
+ case EVIOCSKEYCODE_V2:
+ return evdev_handle_set_keycode_v2(dev, p);
}
size = _IOC_SIZE(cmd);
return -EFAULT;
return error;
-
- case EVIOC_MASK_SIZE(EVIOCGKEYCODE):
- return evdev_handle_get_keycode(dev, p, size);
-
- case EVIOC_MASK_SIZE(EVIOCSKEYCODE):
- return evdev_handle_set_keycode(dev, p, size);
}
/* Multi-number variable-length handlers */
{ "Wacom Bamboo Craft", WACOM_PKGLEN_BBFUN, 14720, 9200, 1023, 63, BAMBOO_PT };
static struct wacom_features wacom_features_0xD3 =
{ "Wacom Bamboo 2FG 6x8", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT };
+static const struct wacom_features wacom_features_0xD4 =
+ { "Wacom Bamboo Pen", WACOM_PKGLEN_BBFUN, 14720, 9200, 255, 63, BAMBOO_PT };
static struct wacom_features wacom_features_0xD8 =
{ "Wacom Bamboo Comic 2FG", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT };
static struct wacom_features wacom_features_0xDA =
{ USB_DEVICE_WACOM(0xD1) },
{ USB_DEVICE_WACOM(0xD2) },
{ USB_DEVICE_WACOM(0xD3) },
+ { USB_DEVICE_WACOM(0xD4) },
{ USB_DEVICE_WACOM(0xD8) },
{ USB_DEVICE_WACOM(0xDA) },
{ USB_DEVICE_WACOM(0xDB) },
*/
if (q->merge_bvec_fn && !ti->type->merge)
- limits->max_sectors =
- min_not_zero(limits->max_sectors,
- (unsigned int) (PAGE_SIZE >> 9));
+ blk_limits_max_hw_sectors(limits,
+ (unsigned int) (PAGE_SIZE >> 9));
return 0;
}
EXPORT_SYMBOL_GPL(dm_set_device_limits);
*/
q->limits = *limits;
- if (limits->no_cluster)
- queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q);
- else
- queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, q);
-
if (!dm_table_supports_discards(t))
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q);
else
goto abort;
mddev->queue->queuedata = mddev;
- /* Can be unlocked because the queue is new: no concurrency */
- queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, mddev->queue);
-
blk_queue_make_request(mddev->queue, md_make_request);
disk = alloc_disk(1 << shift);
static const struct v4l2_file_operations rtrack_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops rtrack_ioctl_ops = {
rt->vdev.release = video_device_release_empty;
video_set_drvdata(&rt->vdev, rt);
- if (video_register_device(&rt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(&rt->v4l2_dev);
- release_region(rt->io, 2);
- return -EINVAL;
- }
- v4l2_info(v4l2_dev, "AIMSlab RadioTrack/RadioReveal card driver.\n");
-
/* Set up the I/O locking */
mutex_init(&rt->lock);
sleep_delay(2000000); /* make sure it's totally down */
outb(0xc0, rt->io); /* steady volume, mute card */
+ if (video_register_device(&rt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(&rt->v4l2_dev);
+ release_region(rt->io, 2);
+ return -EINVAL;
+ }
+ v4l2_info(v4l2_dev, "AIMSlab RadioTrack/RadioReveal card driver.\n");
+
return 0;
}
static const struct v4l2_file_operations aztech_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
az->vdev.ioctl_ops = &aztech_ioctl_ops;
az->vdev.release = video_device_release_empty;
video_set_drvdata(&az->vdev, az);
+ /* mute card - prevents noisy bootups */
+ outb(0, az->io);
if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(v4l2_dev);
}
v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
- /* mute card - prevents noisy bootups */
- outb(0, az->io);
return 0;
}
unsigned char readbuf[RDS_BUFFER];
int i = 0;
+ mutex_lock(&dev->lock);
if (dev->rdsstat == 0) {
- mutex_lock(&dev->lock);
dev->rdsstat = 1;
outb(0x80, dev->io); /* Select RDS fifo */
- mutex_unlock(&dev->lock);
init_timer(&dev->readtimer);
dev->readtimer.function = cadet_handler;
dev->readtimer.data = (unsigned long)dev;
add_timer(&dev->readtimer);
}
if (dev->rdsin == dev->rdsout) {
+ mutex_unlock(&dev->lock);
if (file->f_flags & O_NONBLOCK)
return -EWOULDBLOCK;
interruptible_sleep_on(&dev->read_queue);
+ mutex_lock(&dev->lock);
}
while (i < count && dev->rdsin != dev->rdsout)
readbuf[i++] = dev->rdsbuf[dev->rdsout++];
+ mutex_unlock(&dev->lock);
if (copy_to_user(data, readbuf, i))
return -EFAULT;
{
struct cadet *dev = video_drvdata(file);
+ mutex_lock(&dev->lock);
dev->users++;
if (1 == dev->users)
init_waitqueue_head(&dev->read_queue);
+ mutex_unlock(&dev->lock);
return 0;
}
{
struct cadet *dev = video_drvdata(file);
+ mutex_lock(&dev->lock);
dev->users--;
if (0 == dev->users) {
del_timer_sync(&dev->readtimer);
dev->rdsstat = 0;
}
+ mutex_unlock(&dev->lock);
return 0;
}
.open = cadet_open,
.release = cadet_release,
.read = cadet_read,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.poll = cadet_poll,
};
static const struct v4l2_file_operations gemtek_pci_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = {
card->vdev.release = video_device_release_empty;
video_set_drvdata(&card->vdev, card);
+ gemtek_pci_mute(card);
+
if (video_register_device(&card->vdev, VFL_TYPE_RADIO, nr_radio) < 0)
goto err_video;
- gemtek_pci_mute(card);
-
v4l2_info(v4l2_dev, "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
pdev->revision, card->iobase, card->iobase + card->length - 1);
static const struct v4l2_file_operations gemtek_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static int vidioc_querycap(struct file *file, void *priv,
gt->vdev.release = video_device_release_empty;
video_set_drvdata(>->vdev, gt);
- if (video_register_device(>->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(v4l2_dev);
- release_region(gt->io, 1);
- return -EBUSY;
- }
-
/* Set defaults */
gt->lastfreq = GEMTEK_LOWFREQ;
gt->bu2614data = 0;
if (initmute)
gemtek_mute(gt);
+ if (video_register_device(>->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(v4l2_dev);
+ release_region(gt->io, 1);
+ return -EBUSY;
+ }
+
return 0;
}
static const struct v4l2_file_operations maestro_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops maestro_ioctl_ops = {
dev->vdev.release = video_device_release_empty;
video_set_drvdata(&dev->vdev, dev);
+ if (!radio_power_on(dev)) {
+ retval = -EIO;
+ goto errfr1;
+ }
+
retval = video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr);
if (retval) {
v4l2_err(v4l2_dev, "can't register video device!\n");
goto errfr1;
}
- if (!radio_power_on(dev)) {
- retval = -EIO;
- goto errunr;
- }
-
v4l2_info(v4l2_dev, "version " DRIVER_VERSION "\n");
return 0;
-errunr:
- video_unregister_device(&dev->vdev);
errfr1:
v4l2_device_unregister(v4l2_dev);
errfr:
static const struct v4l2_file_operations maxiradio_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = {
unsigned long freq;
int muted;
struct snd_miro_aci *aci;
+ struct mutex lock;
};
static struct pcm20 pcm20_card = {
static const struct v4l2_file_operations pcm20_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static int vidioc_querycap(struct file *file, void *priv,
return -ENODEV;
}
strlcpy(v4l2_dev->name, "miropcm20", sizeof(v4l2_dev->name));
-
+ mutex_init(&dev->lock);
res = v4l2_device_register(NULL, v4l2_dev);
if (res < 0) {
dev->vdev.fops = &pcm20_fops;
dev->vdev.ioctl_ops = &pcm20_ioctl_ops;
dev->vdev.release = video_device_release_empty;
+ dev->vdev.lock = &dev->lock;
video_set_drvdata(&dev->vdev, dev);
if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0)
static const struct v4l2_file_operations rtrack2_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops rtrack2_ioctl_ops = {
dev->vdev.release = video_device_release_empty;
video_set_drvdata(&dev->vdev, dev);
+ /* mute card - prevents noisy bootups */
+ outb(1, dev->io);
+ dev->muted = 1;
+
mutex_init(&dev->lock);
if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(v4l2_dev);
v4l2_info(v4l2_dev, "AIMSlab Radiotrack II card driver.\n");
- /* mute card - prevents noisy bootups */
- outb(1, dev->io);
- dev->muted = 1;
-
return 0;
}
static const struct v4l2_file_operations fmi_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops fmi_ioctl_ops = {
mutex_init(&fmi->lock);
+ /* mute card - prevents noisy bootups */
+ fmi_mute(fmi);
+
if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(v4l2_dev);
release_region(fmi->io, 2);
}
v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io);
- /* mute card - prevents noisy bootups */
- fmi_mute(fmi);
return 0;
}
static const struct v4l2_file_operations fmr2_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
fmr2->vdev.release = video_device_release_empty;
video_set_drvdata(&fmr2->vdev, fmr2);
+ /* mute card - prevents noisy bootups */
+ fmr2_mute(fmr2->io);
+ fmr2_product_info(fmr2);
+
if (video_register_device(&fmr2->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(v4l2_dev);
release_region(fmr2->io, 2);
}
v4l2_info(v4l2_dev, "SF16FMR2 radio card driver at 0x%x.\n", fmr2->io);
- /* mute card - prevents noisy bootups */
- mutex_lock(&fmr2->lock);
- fmr2_mute(fmr2->io);
- fmr2_product_info(fmr2);
- mutex_unlock(&fmr2->lock);
debug_print((KERN_DEBUG "card_type %d\n", fmr2->card_type));
return 0;
}
/* radio_si4713_fops - file operations interface */
static const struct v4l2_file_operations radio_si4713_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ /* Note: locking is done at the subdev level in the i2c driver. */
+ .unlocked_ioctl = video_ioctl2,
};
/* Video4Linux Interface */
struct video_device *videodev;
struct tea5764_regs regs;
struct mutex mutex;
- int users;
};
/* I2C code related */
return 0;
}
-static int tea5764_open(struct file *file)
-{
- /* Currently we support only one device */
- struct tea5764_device *radio = video_drvdata(file);
-
- mutex_lock(&radio->mutex);
- /* Only exclusive access */
- if (radio->users) {
- mutex_unlock(&radio->mutex);
- return -EBUSY;
- }
- radio->users++;
- mutex_unlock(&radio->mutex);
- file->private_data = radio;
- return 0;
-}
-
-static int tea5764_close(struct file *file)
-{
- struct tea5764_device *radio = video_drvdata(file);
-
- if (!radio)
- return -ENODEV;
- mutex_lock(&radio->mutex);
- radio->users--;
- mutex_unlock(&radio->mutex);
- return 0;
-}
-
/* File system interface */
static const struct v4l2_file_operations tea5764_fops = {
.owner = THIS_MODULE,
- .open = tea5764_open,
- .release = tea5764_close,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops tea5764_ioctl_ops = {
int ret;
PDEBUG("probe");
- radio = kmalloc(sizeof(struct tea5764_device), GFP_KERNEL);
+ radio = kzalloc(sizeof(struct tea5764_device), GFP_KERNEL);
if (!radio)
return -ENOMEM;
i2c_set_clientdata(client, radio);
video_set_drvdata(radio->videodev, radio);
-
- ret = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr);
- if (ret < 0) {
- PWARN("Could not register video device!");
- goto errrel;
- }
+ radio->videodev->lock = &radio->mutex;
/* initialize and power off the chip */
tea5764_i2c_read(radio);
tea5764_mute(radio, 1);
tea5764_power_down(radio);
+ ret = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr);
+ if (ret < 0) {
+ PWARN("Could not register video device!");
+ goto errrel;
+ }
+
PINFO("registered.");
return 0;
errrel:
static const struct v4l2_file_operations terratec_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops terratec_ioctl_ops = {
mutex_init(&tt->lock);
+ /* mute card - prevents noisy bootups */
+ tt_write_vol(tt, 0);
+
if (video_register_device(&tt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(&tt->v4l2_dev);
release_region(tt->io, 2);
}
v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver.\n");
-
- /* mute card - prevents noisy bootups */
- tt_write_vol(tt, 0);
return 0;
}
struct v4l2_subdev *sd_dsp;
struct video_device video_dev;
struct v4l2_device v4l2_dev;
+ struct mutex lock;
};
static const struct v4l2_file_operations timbradio_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static int __devinit timbradio_probe(struct platform_device *pdev)
}
tr->pdata = *pdata;
+ mutex_init(&tr->lock);
strlcpy(tr->video_dev.name, "Timberdale Radio",
sizeof(tr->video_dev.name));
tr->video_dev.ioctl_ops = &timbradio_ioctl_ops;
tr->video_dev.release = video_device_release_empty;
tr->video_dev.minor = -1;
+ tr->video_dev.lock = &tr->lock;
strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name));
err = v4l2_device_register(NULL, &tr->v4l2_dev);
static const struct v4l2_file_operations trust_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops trust_ioctl_ops = {
tr->vdev.release = video_device_release_empty;
video_set_drvdata(&tr->vdev, tr);
- if (video_register_device(&tr->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(v4l2_dev);
- release_region(tr->io, 2);
- return -EINVAL;
- }
-
- v4l2_info(v4l2_dev, "Trust FM Radio card driver v1.0.\n");
-
write_i2c(tr, 2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */
write_i2c(tr, 2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */
write_i2c(tr, 2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */
/* mute card - prevents noisy bootups */
tr_setmute(tr, 1);
+ if (video_register_device(&tr->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(v4l2_dev);
+ release_region(tr->io, 2);
+ return -EINVAL;
+ }
+
+ v4l2_info(v4l2_dev, "Trust FM Radio card driver v1.0.\n");
+
return 0;
}
static const struct v4l2_file_operations typhoon_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops typhoon_ioctl_ops = {
strlcpy(v4l2_dev->name, "typhoon", sizeof(v4l2_dev->name));
dev->io = io;
- dev->curfreq = dev->mutefreq = mutefreq;
if (dev->io == -1) {
v4l2_err(v4l2_dev, "You must set an I/O address with io=0x316 or io=0x336\n");
return -EINVAL;
}
- if (dev->mutefreq < 87000 || dev->mutefreq > 108500) {
+ if (mutefreq < 87000 || mutefreq > 108500) {
v4l2_err(v4l2_dev, "You must set a frequency (in kHz) used when muting the card,\n");
v4l2_err(v4l2_dev, "e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n");
return -EINVAL;
}
+ dev->curfreq = dev->mutefreq = mutefreq << 4;
mutex_init(&dev->lock);
if (!request_region(dev->io, 8, "typhoon")) {
dev->vdev.ioctl_ops = &typhoon_ioctl_ops;
dev->vdev.release = video_device_release_empty;
video_set_drvdata(&dev->vdev, dev);
+
+ /* mute card - prevents noisy bootups */
+ typhoon_mute(dev);
+
if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(&dev->v4l2_dev);
release_region(dev->io, 8);
return -EINVAL;
}
v4l2_info(v4l2_dev, "port 0x%x.\n", dev->io);
- v4l2_info(v4l2_dev, "mute frequency is %lu kHz.\n", dev->mutefreq);
- dev->mutefreq <<= 4;
-
- /* mute card - prevents noisy bootups */
- typhoon_mute(dev);
+ v4l2_info(v4l2_dev, "mute frequency is %lu kHz.\n", mutefreq);
return 0;
}
static const struct v4l2_file_operations zoltrix_fops =
{
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops zoltrix_ioctl_ops = {
return res;
}
- strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
- zol->vdev.v4l2_dev = v4l2_dev;
- zol->vdev.fops = &zoltrix_fops;
- zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
- zol->vdev.release = video_device_release_empty;
- video_set_drvdata(&zol->vdev, zol);
-
- if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(v4l2_dev);
- release_region(zol->io, 2);
- return -EINVAL;
- }
- v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");
-
mutex_init(&zol->lock);
/* mute card - prevents noisy bootups */
zol->curvol = 0;
zol->stereo = 1;
+ strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
+ zol->vdev.v4l2_dev = v4l2_dev;
+ zol->vdev.fops = &zoltrix_fops;
+ zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
+ zol->vdev.release = video_device_release_empty;
+ video_set_drvdata(&zol->vdev, zol);
+
+ if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(v4l2_dev);
+ release_region(zol->io, 2);
+ return -EINVAL;
+ }
+ v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");
+
return 0;
}
static const struct v4l2_file_operations ar_fops = {
.owner = THIS_MODULE,
.read = ar_read,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops ar_ioctl_ops = {
static const struct v4l2_file_operations qcam_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.read = qcam_read,
};
static const struct v4l2_file_operations qcam_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.read = qcam_read,
};
.read = cafe_v4l_read,
.poll = cafe_v4l_poll,
.mmap = cafe_v4l_mmap,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops cafe_v4l_ioctl_ops = {
static int snd_cx18_pcm_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
- return snd_pcm_lib_ioctl(substream, cmd, arg);
+ struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
+ int ret;
+
+ snd_cx18_lock(cxsc);
+ ret = snd_pcm_lib_ioctl(substream, cmd, arg);
+ snd_cx18_unlock(cxsc);
+ return ret;
}
.read = cx18_v4l2_read,
.open = cx18_v4l2_open,
/* FIXME change to video_ioctl2 if serialization lock can be removed */
- .ioctl = cx18_v4l2_ioctl,
+ .unlocked_ioctl = cx18_v4l2_ioctl,
.release = cx18_v4l2_close,
.poll = cx18_v4l2_enc_poll,
};
.owner = THIS_MODULE,
.open = et61x251_open,
.release = et61x251_release,
- .ioctl = et61x251_ioctl,
+ .unlocked_ioctl = et61x251_ioctl,
.read = et61x251_read,
.poll = et61x251_poll,
.mmap = et61x251_mmap,
.open = meye_open,
.release = meye_release,
.mmap = meye_mmap,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.poll = meye_poll,
};
msleep(1);
mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
- if (video_register_device(meye.vdev, VFL_TYPE_GRABBER,
- video_nr) < 0) {
- v4l2_err(v4l2_dev, "video_register_device failed\n");
- goto outvideoreg;
- }
-
mutex_init(&meye.lock);
init_waitqueue_head(&meye.proc_list);
meye.brightness = 32 << 10;
sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAPICTURE, 0);
sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAAGC, 48);
+ if (video_register_device(meye.vdev, VFL_TYPE_GRABBER,
+ video_nr) < 0) {
+ v4l2_err(v4l2_dev, "video_register_device failed\n");
+ goto outvideoreg;
+ }
+
v4l2_info(v4l2_dev, "Motion Eye Camera Driver v%s.\n",
MEYE_DRIVER_VERSION);
v4l2_info(v4l2_dev, "mchip KL5A72002 rev. %d, base %lx, irq %d\n",
static const struct v4l2_file_operations pms_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.read = pms_read,
};
int pix_idx;
struct videobuf_buffer *active;
enum sh_vou_status status;
+ struct mutex fop_lock;
};
struct sh_vou_file {
vb->state = VIDEOBUF_NEEDS_INIT;
}
-/* Locking: caller holds vq->vb_lock mutex */
+/* Locking: caller holds fop_lock mutex */
static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count,
unsigned int *size)
{
return 0;
}
-/* Locking: caller holds vq->vb_lock mutex */
+/* Locking: caller holds fop_lock mutex */
static int sh_vou_buf_prepare(struct videobuf_queue *vq,
struct videobuf_buffer *vb,
enum v4l2_field field)
return 0;
}
-/* Locking: caller holds vq->vb_lock mutex and vq->irqlock spinlock */
+/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */
static void sh_vou_buf_queue(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
V4L2_BUF_TYPE_VIDEO_OUTPUT,
V4L2_FIELD_NONE,
sizeof(struct videobuf_buffer), vdev,
- NULL);
+ &vou_dev->fop_lock);
return 0;
}
.owner = THIS_MODULE,
.open = sh_vou_open,
.release = sh_vou_release,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.mmap = sh_vou_mmap,
.poll = sh_vou_poll,
};
INIT_LIST_HEAD(&vou_dev->queue);
spin_lock_init(&vou_dev->lock);
+ mutex_init(&vou_dev->fop_lock);
atomic_set(&vou_dev->use_count, 0);
vou_dev->pdata = vou_pdata;
vou_dev->status = SH_VOU_IDLE;
vdev->tvnorms |= V4L2_STD_PAL;
vdev->v4l2_dev = &vou_dev->v4l2_dev;
vdev->release = video_device_release;
+ vdev->lock = &vou_dev->fop_lock;
vou_dev->vdev = vdev;
video_set_drvdata(vdev, vou_dev);
.owner = THIS_MODULE,
.open = sn9c102_open,
.release = sn9c102_release,
- .ioctl = sn9c102_ioctl,
+ .unlocked_ioctl = sn9c102_ioctl,
.read = sn9c102_read,
.poll = sn9c102_poll,
.mmap = sn9c102_mmap,
}
}
-struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
+static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
__u32 v4l2_id, struct uvc_control_mapping **mapping)
{
struct uvc_control *ctrl = NULL;
return ret;
}
+/*
+ * Mapping V4L2 controls to UVC controls can be straighforward if done well.
+ * Most of the UVC controls exist in V4L2, and can be mapped directly. Some
+ * must be grouped (for instance the Red Balance, Blue Balance and Do White
+ * Balance V4L2 controls use the White Balance Component UVC control) or
+ * otherwise translated. The approach we take here is to use a translation
+ * table for the controls that can be mapped directly, and handle the others
+ * manually.
+ */
+int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
+ struct v4l2_querymenu *query_menu)
+{
+ struct uvc_menu_info *menu_info;
+ struct uvc_control_mapping *mapping;
+ struct uvc_control *ctrl;
+ u32 index = query_menu->index;
+ u32 id = query_menu->id;
+ int ret;
+
+ memset(query_menu, 0, sizeof(*query_menu));
+ query_menu->id = id;
+ query_menu->index = index;
+
+ ret = mutex_lock_interruptible(&chain->ctrl_mutex);
+ if (ret < 0)
+ return -ERESTARTSYS;
+
+ ctrl = uvc_find_control(chain, query_menu->id, &mapping);
+ if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ if (query_menu->index >= mapping->menu_count) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ menu_info = &mapping->menu_info[query_menu->index];
+ strlcpy(query_menu->name, menu_info->name, sizeof query_menu->name);
+
+done:
+ mutex_unlock(&chain->ctrl_mutex);
+ return ret;
+}
+
/* --------------------------------------------------------------------------
* Control transactions
queue->type = type;
}
+/*
+ * Free the video buffers.
+ *
+ * This function must be called with the queue lock held.
+ */
+static int __uvc_free_buffers(struct uvc_video_queue *queue)
+{
+ unsigned int i;
+
+ for (i = 0; i < queue->count; ++i) {
+ if (queue->buffer[i].vma_use_count != 0)
+ return -EBUSY;
+ }
+
+ if (queue->count) {
+ vfree(queue->mem);
+ queue->count = 0;
+ }
+
+ return 0;
+}
+
+int uvc_free_buffers(struct uvc_video_queue *queue)
+{
+ int ret;
+
+ mutex_lock(&queue->mutex);
+ ret = __uvc_free_buffers(queue);
+ mutex_unlock(&queue->mutex);
+
+ return ret;
+}
+
/*
* Allocate the video buffers.
*
mutex_lock(&queue->mutex);
- if ((ret = uvc_free_buffers(queue)) < 0)
+ if ((ret = __uvc_free_buffers(queue)) < 0)
goto done;
/* Bail out if no buffers should be allocated. */
return ret;
}
-/*
- * Free the video buffers.
- *
- * This function must be called with the queue lock held.
- */
-int uvc_free_buffers(struct uvc_video_queue *queue)
-{
- unsigned int i;
-
- for (i = 0; i < queue->count; ++i) {
- if (queue->buffer[i].vma_use_count != 0)
- return -EBUSY;
- }
-
- if (queue->count) {
- vfree(queue->mem);
- queue->count = 0;
- }
-
- return 0;
-}
-
/*
* Check if buffers have been allocated.
*/
return ret;
}
+/*
+ * VMA operations.
+ */
+static void uvc_vm_open(struct vm_area_struct *vma)
+{
+ struct uvc_buffer *buffer = vma->vm_private_data;
+ buffer->vma_use_count++;
+}
+
+static void uvc_vm_close(struct vm_area_struct *vma)
+{
+ struct uvc_buffer *buffer = vma->vm_private_data;
+ buffer->vma_use_count--;
+}
+
+static const struct vm_operations_struct uvc_vm_ops = {
+ .open = uvc_vm_open,
+ .close = uvc_vm_close,
+};
+
+/*
+ * Memory-map a video buffer.
+ *
+ * This function implements video buffers memory mapping and is intended to be
+ * used by the device mmap handler.
+ */
+int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma)
+{
+ struct uvc_buffer *uninitialized_var(buffer);
+ struct page *page;
+ unsigned long addr, start, size;
+ unsigned int i;
+ int ret = 0;
+
+ start = vma->vm_start;
+ size = vma->vm_end - vma->vm_start;
+
+ mutex_lock(&queue->mutex);
+
+ for (i = 0; i < queue->count; ++i) {
+ buffer = &queue->buffer[i];
+ if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
+ break;
+ }
+
+ if (i == queue->count || size != queue->buf_size) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ /*
+ * VM_IO marks the area as being an mmaped region for I/O to a
+ * device. It also prevents the region from being core dumped.
+ */
+ vma->vm_flags |= VM_IO;
+
+ addr = (unsigned long)queue->mem + buffer->buf.m.offset;
+ while (size > 0) {
+ page = vmalloc_to_page((void *)addr);
+ if ((ret = vm_insert_page(vma, start, page)) < 0)
+ goto done;
+
+ start += PAGE_SIZE;
+ addr += PAGE_SIZE;
+ size -= PAGE_SIZE;
+ }
+
+ vma->vm_ops = &uvc_vm_ops;
+ vma->vm_private_data = buffer;
+ uvc_vm_open(vma);
+
+done:
+ mutex_unlock(&queue->mutex);
+ return ret;
+}
+
/*
* Poll the video queue.
*
* V4L2 interface
*/
-/*
- * Mapping V4L2 controls to UVC controls can be straighforward if done well.
- * Most of the UVC controls exist in V4L2, and can be mapped directly. Some
- * must be grouped (for instance the Red Balance, Blue Balance and Do White
- * Balance V4L2 controls use the White Balance Component UVC control) or
- * otherwise translated. The approach we take here is to use a translation
- * table for the controls that can be mapped directly, and handle the others
- * manually.
- */
-static int uvc_v4l2_query_menu(struct uvc_video_chain *chain,
- struct v4l2_querymenu *query_menu)
-{
- struct uvc_menu_info *menu_info;
- struct uvc_control_mapping *mapping;
- struct uvc_control *ctrl;
- u32 index = query_menu->index;
- u32 id = query_menu->id;
-
- ctrl = uvc_find_control(chain, query_menu->id, &mapping);
- if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU)
- return -EINVAL;
-
- if (query_menu->index >= mapping->menu_count)
- return -EINVAL;
-
- memset(query_menu, 0, sizeof(*query_menu));
- query_menu->id = id;
- query_menu->index = index;
-
- menu_info = &mapping->menu_info[query_menu->index];
- strlcpy(query_menu->name, menu_info->name, sizeof query_menu->name);
- return 0;
-}
-
/*
* Find the frame interval closest to the requested frame interval for the
* given frame format and size. This should be done by the device as part of
* developers test their webcams with the Linux driver as well as with
* the Windows driver).
*/
+ mutex_lock(&stream->mutex);
if (stream->dev->quirks & UVC_QUIRK_PROBE_EXTRAFIELDS)
probe->dwMaxVideoFrameSize =
stream->ctrl.dwMaxVideoFrameSize;
/* Probe the device. */
ret = uvc_probe_video(stream, probe);
+ mutex_unlock(&stream->mutex);
if (ret < 0)
goto done;
static int uvc_v4l2_get_format(struct uvc_streaming *stream,
struct v4l2_format *fmt)
{
- struct uvc_format *format = stream->cur_format;
- struct uvc_frame *frame = stream->cur_frame;
+ struct uvc_format *format;
+ struct uvc_frame *frame;
+ int ret = 0;
if (fmt->type != stream->type)
return -EINVAL;
- if (format == NULL || frame == NULL)
- return -EINVAL;
+ mutex_lock(&stream->mutex);
+ format = stream->cur_format;
+ frame = stream->cur_frame;
+
+ if (format == NULL || frame == NULL) {
+ ret = -EINVAL;
+ goto done;
+ }
fmt->fmt.pix.pixelformat = format->fcc;
fmt->fmt.pix.width = frame->wWidth;
fmt->fmt.pix.colorspace = format->colorspace;
fmt->fmt.pix.priv = 0;
- return 0;
+done:
+ mutex_unlock(&stream->mutex);
+ return ret;
}
static int uvc_v4l2_set_format(struct uvc_streaming *stream,
if (fmt->type != stream->type)
return -EINVAL;
- if (uvc_queue_allocated(&stream->queue))
- return -EBUSY;
-
ret = uvc_v4l2_try_format(stream, fmt, &probe, &format, &frame);
if (ret < 0)
return ret;
+ mutex_lock(&stream->mutex);
+
+ if (uvc_queue_allocated(&stream->queue)) {
+ ret = -EBUSY;
+ goto done;
+ }
+
memcpy(&stream->ctrl, &probe, sizeof probe);
stream->cur_format = format;
stream->cur_frame = frame;
- return 0;
+done:
+ mutex_unlock(&stream->mutex);
+ return ret;
}
static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream,
if (parm->type != stream->type)
return -EINVAL;
+ mutex_lock(&stream->mutex);
numerator = stream->ctrl.dwFrameInterval;
+ mutex_unlock(&stream->mutex);
+
denominator = 10000000;
uvc_simplify_fraction(&numerator, &denominator, 8, 333);
static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
struct v4l2_streamparm *parm)
{
- struct uvc_frame *frame = stream->cur_frame;
struct uvc_streaming_control probe;
struct v4l2_fract timeperframe;
uint32_t interval;
if (parm->type != stream->type)
return -EINVAL;
- if (uvc_queue_streaming(&stream->queue))
- return -EBUSY;
-
if (parm->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
timeperframe = parm->parm.capture.timeperframe;
else
timeperframe = parm->parm.output.timeperframe;
- memcpy(&probe, &stream->ctrl, sizeof probe);
interval = uvc_fraction_to_interval(timeperframe.numerator,
timeperframe.denominator);
-
uvc_trace(UVC_TRACE_FORMAT, "Setting frame interval to %u/%u (%u).\n",
timeperframe.numerator, timeperframe.denominator, interval);
- probe.dwFrameInterval = uvc_try_frame_interval(frame, interval);
+
+ mutex_lock(&stream->mutex);
+
+ if (uvc_queue_streaming(&stream->queue)) {
+ mutex_unlock(&stream->mutex);
+ return -EBUSY;
+ }
+
+ memcpy(&probe, &stream->ctrl, sizeof probe);
+ probe.dwFrameInterval =
+ uvc_try_frame_interval(stream->cur_frame, interval);
/* Probe the device with the new settings. */
ret = uvc_probe_video(stream, &probe);
- if (ret < 0)
+ if (ret < 0) {
+ mutex_unlock(&stream->mutex);
return ret;
+ }
memcpy(&stream->ctrl, &probe, sizeof probe);
+ mutex_unlock(&stream->mutex);
/* Return the actual frame period. */
timeperframe.numerator = probe.dwFrameInterval;
if (uvc_has_privileges(handle)) {
uvc_video_enable(stream, 0);
- mutex_lock(&stream->queue.mutex);
if (uvc_free_buffers(&stream->queue) < 0)
uvc_printk(KERN_ERR, "uvc_v4l2_release: Unable to "
"free buffers.\n");
- mutex_unlock(&stream->queue.mutex);
}
/* Release the file handle. */
}
case VIDIOC_QUERYMENU:
- return uvc_v4l2_query_menu(chain, arg);
+ return uvc_query_v4l2_menu(chain, arg);
case VIDIOC_G_EXT_CTRLS:
{
case VIDIOC_CROPCAP:
{
struct v4l2_cropcap *ccap = arg;
- struct uvc_frame *frame = stream->cur_frame;
if (ccap->type != stream->type)
return -EINVAL;
ccap->bounds.left = 0;
ccap->bounds.top = 0;
- ccap->bounds.width = frame->wWidth;
- ccap->bounds.height = frame->wHeight;
+
+ mutex_lock(&stream->mutex);
+ ccap->bounds.width = stream->cur_frame->wWidth;
+ ccap->bounds.height = stream->cur_frame->wHeight;
+ mutex_unlock(&stream->mutex);
ccap->defrect = ccap->bounds;
case VIDIOC_REQBUFS:
{
struct v4l2_requestbuffers *rb = arg;
- unsigned int bufsize =
- stream->ctrl.dwMaxVideoFrameSize;
if (rb->type != stream->type ||
rb->memory != V4L2_MEMORY_MMAP)
if ((ret = uvc_acquire_privileges(handle)) < 0)
return ret;
- ret = uvc_alloc_buffers(&stream->queue, rb->count, bufsize);
+ mutex_lock(&stream->mutex);
+ ret = uvc_alloc_buffers(&stream->queue, rb->count,
+ stream->ctrl.dwMaxVideoFrameSize);
+ mutex_unlock(&stream->mutex);
if (ret < 0)
return ret;
if (!uvc_has_privileges(handle))
return -EBUSY;
+ mutex_lock(&stream->mutex);
ret = uvc_video_enable(stream, 1);
+ mutex_unlock(&stream->mutex);
if (ret < 0)
return ret;
break;
return -EINVAL;
}
-/*
- * VMA operations.
- */
-static void uvc_vm_open(struct vm_area_struct *vma)
-{
- struct uvc_buffer *buffer = vma->vm_private_data;
- buffer->vma_use_count++;
-}
-
-static void uvc_vm_close(struct vm_area_struct *vma)
-{
- struct uvc_buffer *buffer = vma->vm_private_data;
- buffer->vma_use_count--;
-}
-
-static const struct vm_operations_struct uvc_vm_ops = {
- .open = uvc_vm_open,
- .close = uvc_vm_close,
-};
-
static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
{
struct uvc_fh *handle = file->private_data;
struct uvc_streaming *stream = handle->stream;
- struct uvc_video_queue *queue = &stream->queue;
- struct uvc_buffer *uninitialized_var(buffer);
- struct page *page;
- unsigned long addr, start, size;
- unsigned int i;
- int ret = 0;
uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_mmap\n");
- start = vma->vm_start;
- size = vma->vm_end - vma->vm_start;
-
- mutex_lock(&queue->mutex);
-
- for (i = 0; i < queue->count; ++i) {
- buffer = &queue->buffer[i];
- if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
- break;
- }
-
- if (i == queue->count || size != queue->buf_size) {
- ret = -EINVAL;
- goto done;
- }
-
- /*
- * VM_IO marks the area as being an mmaped region for I/O to a
- * device. It also prevents the region from being core dumped.
- */
- vma->vm_flags |= VM_IO;
-
- addr = (unsigned long)queue->mem + buffer->buf.m.offset;
- while (size > 0) {
- page = vmalloc_to_page((void *)addr);
- if ((ret = vm_insert_page(vma, start, page)) < 0)
- goto done;
-
- start += PAGE_SIZE;
- addr += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
-
- vma->vm_ops = &uvc_vm_ops;
- vma->vm_private_data = buffer;
- uvc_vm_open(vma);
-
-done:
- mutex_unlock(&queue->mutex);
- return ret;
+ return uvc_queue_mmap(&stream->queue, vma);
}
static unsigned int uvc_v4l2_poll(struct file *file, poll_table *wait)
.owner = THIS_MODULE,
.open = uvc_v4l2_open,
.release = uvc_v4l2_release,
- .ioctl = uvc_v4l2_ioctl,
+ .unlocked_ioctl = uvc_v4l2_ioctl,
.read = uvc_v4l2_read,
.mmap = uvc_v4l2_mmap,
.poll = uvc_v4l2_poll,
unsigned int i;
int ret;
- mutex_lock(&stream->mutex);
-
/* Perform probing. The device should adjust the requested values
* according to its capabilities. However, some devices, namely the
* first generation UVC Logitech webcams, don't implement the Video
}
done:
- mutex_unlock(&stream->mutex);
return ret;
}
struct uvc_streaming_control ctrl;
struct uvc_format *cur_format;
struct uvc_frame *cur_frame;
-
+ /* Protect access to ctrl, cur_format, cur_frame and hardware video
+ * probe control.
+ */
struct mutex mutex;
unsigned int frozen : 1;
extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
struct uvc_buffer *buf);
+extern int uvc_queue_mmap(struct uvc_video_queue *queue,
+ struct vm_area_struct *vma);
extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
struct file *file, poll_table *wait);
extern int uvc_queue_allocated(struct uvc_video_queue *queue);
extern int uvc_status_resume(struct uvc_device *dev);
/* Controls */
-extern struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
- __u32 v4l2_id, struct uvc_control_mapping **mapping);
extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
struct v4l2_queryctrl *v4l2_ctrl);
+extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
+ struct v4l2_querymenu *query_menu);
extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
const struct uvc_control_mapping *mapping);
size_t sz, loff_t *off)
{
struct video_device *vdev = video_devdata(filp);
- int ret = -EIO;
+ int ret = -ENODEV;
if (!vdev->fops->read)
return -EINVAL;
- if (vdev->lock)
- mutex_lock(vdev->lock);
+ if (vdev->lock && mutex_lock_interruptible(vdev->lock))
+ return -ERESTARTSYS;
if (video_is_registered(vdev))
ret = vdev->fops->read(filp, buf, sz, off);
if (vdev->lock)
size_t sz, loff_t *off)
{
struct video_device *vdev = video_devdata(filp);
- int ret = -EIO;
+ int ret = -ENODEV;
if (!vdev->fops->write)
return -EINVAL;
- if (vdev->lock)
- mutex_lock(vdev->lock);
+ if (vdev->lock && mutex_lock_interruptible(vdev->lock))
+ return -ERESTARTSYS;
if (video_is_registered(vdev))
ret = vdev->fops->write(filp, buf, sz, off);
if (vdev->lock)
static unsigned int v4l2_poll(struct file *filp, struct poll_table_struct *poll)
{
struct video_device *vdev = video_devdata(filp);
- int ret = DEFAULT_POLLMASK;
+ int ret = POLLERR | POLLHUP;
if (!vdev->fops->poll)
- return ret;
+ return DEFAULT_POLLMASK;
if (vdev->lock)
mutex_lock(vdev->lock);
if (video_is_registered(vdev))
int ret = -ENODEV;
if (vdev->fops->unlocked_ioctl) {
- if (vdev->lock)
- mutex_lock(vdev->lock);
+ if (vdev->lock && mutex_lock_interruptible(vdev->lock))
+ return -ERESTARTSYS;
if (video_is_registered(vdev))
ret = vdev->fops->unlocked_ioctl(filp, cmd, arg);
if (vdev->lock)
mutex_unlock(vdev->lock);
} else if (vdev->fops->ioctl) {
- /* TODO: convert all drivers to unlocked_ioctl */
+ /* This code path is a replacement for the BKL. It is a major
+ * hack but it will have to do for those drivers that are not
+ * yet converted to use unlocked_ioctl.
+ *
+ * There are two options: if the driver implements struct
+ * v4l2_device, then the lock defined there is used to
+ * serialize the ioctls. Otherwise the v4l2 core lock defined
+ * below is used. This lock is really bad since it serializes
+ * completely independent devices.
+ *
+ * Both variants suffer from the same problem: if the driver
+ * sleeps, then it blocks all ioctls since the lock is still
+ * held. This is very common for VIDIOC_DQBUF since that
+ * normally waits for a frame to arrive. As a result any other
+ * ioctl calls will proceed very, very slowly since each call
+ * will have to wait for the VIDIOC_QBUF to finish. Things that
+ * should take 0.01s may now take 10-20 seconds.
+ *
+ * The workaround is to *not* take the lock for VIDIOC_DQBUF.
+ * This actually works OK for videobuf-based drivers, since
+ * videobuf will take its own internal lock.
+ */
static DEFINE_MUTEX(v4l2_ioctl_mutex);
+ struct mutex *m = vdev->v4l2_dev ?
+ &vdev->v4l2_dev->ioctl_lock : &v4l2_ioctl_mutex;
- mutex_lock(&v4l2_ioctl_mutex);
+ if (cmd != VIDIOC_DQBUF && mutex_lock_interruptible(m))
+ return -ERESTARTSYS;
if (video_is_registered(vdev))
ret = vdev->fops->ioctl(filp, cmd, arg);
- mutex_unlock(&v4l2_ioctl_mutex);
+ if (cmd != VIDIOC_DQBUF)
+ mutex_unlock(m);
} else
ret = -ENOTTY;
if (!vdev->fops->mmap)
return ret;
- if (vdev->lock)
- mutex_lock(vdev->lock);
+ if (vdev->lock && mutex_lock_interruptible(vdev->lock))
+ return -ERESTARTSYS;
if (video_is_registered(vdev))
ret = vdev->fops->mmap(filp, vm);
if (vdev->lock)
mutex_lock(&videodev_lock);
vdev = video_devdata(filp);
/* return ENODEV if the video device has already been removed. */
- if (vdev == NULL) {
+ if (vdev == NULL || !video_is_registered(vdev)) {
mutex_unlock(&videodev_lock);
return -ENODEV;
}
video_get(vdev);
mutex_unlock(&videodev_lock);
if (vdev->fops->open) {
- if (vdev->lock)
- mutex_lock(vdev->lock);
+ if (vdev->lock && mutex_lock_interruptible(vdev->lock)) {
+ ret = -ERESTARTSYS;
+ goto err;
+ }
if (video_is_registered(vdev))
ret = vdev->fops->open(filp);
else
mutex_unlock(vdev->lock);
}
+err:
/* decrease the refcount in case of an error */
if (ret)
video_put(vdev);
if (!vdev || !video_is_registered(vdev))
return;
+ mutex_lock(&videodev_lock);
+ /* This must be in a critical section to prevent a race with v4l2_open.
+ * Once this bit has been cleared video_get may never be called again.
+ */
clear_bit(V4L2_FL_REGISTERED, &vdev->flags);
+ mutex_unlock(&videodev_lock);
device_unregister(&vdev->dev);
}
EXPORT_SYMBOL(video_unregister_device);
INIT_LIST_HEAD(&v4l2_dev->subdevs);
spin_lock_init(&v4l2_dev->lock);
+ mutex_init(&v4l2_dev->ioctl_lock);
v4l2_dev->dev = dev;
if (dev == NULL) {
/* If dev == NULL, then name must be filled in by the caller */
static const struct v4l2_file_operations w9966_fops = {
.owner = THIS_MODULE,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.read = w9966_v4l_read,
};
}
}
-static bool pci_bus_resource_better(struct resource *res1, bool pos1,
- struct resource *res2, bool pos2)
-{
- /* If exactly one is positive decode, always prefer that one */
- if (pos1 != pos2)
- return pos1 ? true : false;
-
- /* Prefer the one that contains the highest address */
- if (res1->end != res2->end)
- return (res1->end > res2->end) ? true : false;
-
- /* Otherwise, prefer the one with highest "center of gravity" */
- if (res1->start != res2->start)
- return (res1->start > res2->start) ? true : false;
-
- /* Otherwise, choose one arbitrarily (but consistently) */
- return (res1 > res2) ? true : false;
-}
-
-static bool pci_bus_resource_positive(struct pci_bus *bus, struct resource *res)
-{
- struct pci_bus_resource *bus_res;
-
- /*
- * This relies on the fact that pci_bus.resource[] refers to P2P or
- * CardBus bridge base/limit registers, which are always positively
- * decoded. The pci_bus.resources list contains host bridge or
- * subtractively decoded resources.
- */
- list_for_each_entry(bus_res, &bus->resources, list) {
- if (bus_res->res == res)
- return (bus_res->flags & PCI_SUBTRACTIVE_DECODE) ?
- false : true;
- }
- return true;
-}
-
-/*
- * Find the next-best bus resource after the cursor "res". If the cursor is
- * NULL, return the best resource. "Best" means that we prefer positive
- * decode regions over subtractive decode, then those at higher addresses.
- */
-static struct resource *pci_bus_find_resource_prev(struct pci_bus *bus,
- unsigned int type,
- struct resource *res)
-{
- bool res_pos, r_pos, prev_pos = false;
- struct resource *r, *prev = NULL;
- int i;
-
- res_pos = pci_bus_resource_positive(bus, res);
- pci_bus_for_each_resource(bus, r, i) {
- if (!r)
- continue;
-
- if ((r->flags & IORESOURCE_TYPE_BITS) != type)
- continue;
-
- r_pos = pci_bus_resource_positive(bus, r);
- if (!res || pci_bus_resource_better(res, res_pos, r, r_pos)) {
- if (!prev || pci_bus_resource_better(r, r_pos,
- prev, prev_pos)) {
- prev = r;
- prev_pos = r_pos;
- }
- }
- }
-
- return prev;
-}
-
/**
* pci_bus_alloc_resource - allocate a resource from a parent bus
* @bus: PCI bus
resource_size_t),
void *alignf_data)
{
- int ret = -ENOMEM;
+ int i, ret = -ENOMEM;
struct resource *r;
resource_size_t max = -1;
- unsigned int type = res->flags & IORESOURCE_TYPE_BITS;
type_mask |= IORESOURCE_IO | IORESOURCE_MEM;
if (!(res->flags & IORESOURCE_MEM_64))
max = PCIBIOS_MAX_MEM_32;
- /* Look for space at highest addresses first */
- r = pci_bus_find_resource_prev(bus, type, NULL);
- for ( ; r; r = pci_bus_find_resource_prev(bus, type, r)) {
+ pci_bus_for_each_resource(bus, r, i) {
+ if (!r)
+ continue;
+
/* type_mask must match */
if ((res->flags ^ r->flags) & type_mask)
continue;
(unsigned long long)drhd->reg_base_addr, ret);
return -1;
}
+
+ /*
+ * Clear any previous faults.
+ */
+ dmar_fault(iommu->irq, iommu);
}
return 0;
{
u32 cfg;
+ if (!pci_find_capability(dev, PCI_CAP_ID_HT))
+ return;
+
pci_read_config_dword(dev, 0x74, &cfg);
if (cfg & ((1 << 2) | (1 << 15))) {
DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
#endif /*CONFIG_MMC_RICOH_MMC*/
+#if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP)
+#define VTUNCERRMSK_REG 0x1ac
+#define VTD_MSK_SPEC_ERRORS (1 << 31)
+/*
+ * This is a quirk for masking vt-d spec defined errors to platform error
+ * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
+ * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
+ * on the RAS config settings of the platform) when a vt-d fault happens.
+ * The resulting SMI caused the system to hang.
+ *
+ * VT-d spec related errors are already handled by the VT-d OS code, so no
+ * need to report the same error through other channels.
+ */
+static void vtd_mask_spec_errors(struct pci_dev *dev)
+{
+ u32 word;
+
+ pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
+ pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
+#endif
static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
struct pci_fixup *end)
blk_queue_max_segment_size(q, dma_get_max_seg_size(dev));
- /* New queue, no concurrency on queue_flags */
if (!shost->use_clustering)
- queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q);
+ q->limits.cluster = 0;
/*
* set a reasonable default alignment on word boundaries: the
static struct dentry *btrfs_get_parent(struct dentry *child)
{
struct inode *dir = child->d_inode;
- static struct dentry *dentry;
+ struct dentry *dentry;
struct btrfs_root *root = BTRFS_I(dir)->root;
struct btrfs_path *path;
struct extent_buffer *leaf;
if (!(open_flag & O_CREAT))
mode = 0;
+ /* Must never be set by userspace */
+ open_flag &= ~FMODE_NONOTIFY;
+
/*
* O_SYNC is implemented as __O_SYNC|O_DSYNC. As many places only
* check for O_DSYNC if the need any syncing at all we enforce it's
int nilfs_init_gcinode(struct inode *inode)
{
struct nilfs_inode_info *ii = NILFS_I(inode);
- struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
inode->i_mode = S_IFREG;
mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
ii->i_flags = 0;
nilfs_bmap_init_gc(ii->i_bmap);
- /*
- * Add the inode to GC inode list. Garbage Collection
- * is serialized and no two processes manipulate the
- * list simultaneously.
- */
- igrab(inode);
- list_add(&NILFS_I(inode)->i_dirty, &nilfs->ns_gc_inodes);
-
return 0;
}
struct nilfs_argv *argv, void *buf)
{
size_t nmembs = argv->v_nmembs;
+ struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct inode *inode;
struct nilfs_vdesc *vdesc;
struct buffer_head *bh, *n;
ret = PTR_ERR(inode);
goto failed;
}
+ if (list_empty(&NILFS_I(inode)->i_dirty)) {
+ /*
+ * Add the inode to GC inode list. Garbage Collection
+ * is serialized and no two processes manipulate the
+ * list simultaneously.
+ */
+ igrab(inode);
+ list_add(&NILFS_I(inode)->i_dirty,
+ &nilfs->ns_gc_inodes);
+ }
+
do {
ret = nilfs_ioctl_move_inode_block(inode, vdesc,
&buffers);
pr_debug("%s: group=%p event=%p\n", __func__, group, event);
- wait_event(group->fanotify_data.access_waitq, event->response);
+ wait_event(group->fanotify_data.access_waitq, event->response ||
+ atomic_read(&group->fanotify_data.bypass_perm));
+
+ if (!event->response) /* bypass_perm set */
+ return 0;
/* userspace responded, convert to something usable */
spin_lock(&event->lock);
return client_fd;
}
-static ssize_t fill_event_metadata(struct fsnotify_group *group,
+static int fill_event_metadata(struct fsnotify_group *group,
struct fanotify_event_metadata *metadata,
struct fsnotify_event *event)
{
+ int ret = 0;
+
pr_debug("%s: group=%p metadata=%p event=%p\n", __func__,
group, metadata, event);
metadata->event_len = FAN_EVENT_METADATA_LEN;
+ metadata->metadata_len = FAN_EVENT_METADATA_LEN;
metadata->vers = FANOTIFY_METADATA_VERSION;
metadata->mask = event->mask & FAN_ALL_OUTGOING_EVENTS;
metadata->pid = pid_vnr(event->tgid);
- metadata->fd = create_fd(group, event);
+ if (unlikely(event->mask & FAN_Q_OVERFLOW))
+ metadata->fd = FAN_NOFD;
+ else {
+ metadata->fd = create_fd(group, event);
+ if (metadata->fd < 0)
+ ret = metadata->fd;
+ }
- return metadata->fd;
+ return ret;
}
#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
mutex_lock(&group->fanotify_data.access_mutex);
- if (group->fanotify_data.bypass_perm) {
+ if (atomic_read(&group->fanotify_data.bypass_perm)) {
mutex_unlock(&group->fanotify_data.access_mutex);
kmem_cache_free(fanotify_response_event_cache, re);
event->response = FAN_ALLOW;
pr_debug("%s: group=%p event=%p\n", __func__, group, event);
- fd = fill_event_metadata(group, &fanotify_event_metadata, event);
- if (fd < 0)
- return fd;
+ ret = fill_event_metadata(group, &fanotify_event_metadata, event);
+ if (ret < 0)
+ goto out;
+ fd = fanotify_event_metadata.fd;
ret = prepare_for_access_response(group, event, fd);
if (ret)
goto out_close_fd;
ret = -EFAULT;
- if (copy_to_user(buf, &fanotify_event_metadata, FAN_EVENT_METADATA_LEN))
+ if (copy_to_user(buf, &fanotify_event_metadata,
+ fanotify_event_metadata.event_len))
goto out_kill_access_response;
- return FAN_EVENT_METADATA_LEN;
+ return fanotify_event_metadata.event_len;
out_kill_access_response:
remove_access_response(group, event, fd);
out_close_fd:
- sys_close(fd);
+ if (fd != FAN_NOFD)
+ sys_close(fd);
+out:
+#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
+ if (event->mask & FAN_ALL_PERM_EVENTS) {
+ event->response = FAN_DENY;
+ wake_up(&group->fanotify_data.access_waitq);
+ }
+#endif
return ret;
}
mutex_lock(&group->fanotify_data.access_mutex);
- group->fanotify_data.bypass_perm = true;
+ atomic_inc(&group->fanotify_data.bypass_perm);
list_for_each_entry_safe(re, lre, &group->fanotify_data.access_list, list) {
pr_debug("%s: found group=%p re=%p event=%p\n", __func__, group,
{
struct fsnotify_mark *fsn_mark;
__u32 added;
+ int ret = 0;
fsn_mark = fsnotify_find_vfsmount_mark(group, mnt);
if (!fsn_mark) {
- int ret;
-
if (atomic_read(&group->num_marks) > group->fanotify_data.max_marks)
return -ENOSPC;
fsnotify_init_mark(fsn_mark, fanotify_free_mark);
ret = fsnotify_add_mark(fsn_mark, group, NULL, mnt, 0);
- if (ret) {
- fanotify_free_mark(fsn_mark);
- return ret;
- }
+ if (ret)
+ goto err;
}
added = fanotify_mark_add_to_mask(fsn_mark, mask, flags);
- fsnotify_put_mark(fsn_mark);
+
if (added & ~mnt->mnt_fsnotify_mask)
fsnotify_recalc_vfsmount_mask(mnt);
-
- return 0;
+err:
+ fsnotify_put_mark(fsn_mark);
+ return ret;
}
static int fanotify_add_inode_mark(struct fsnotify_group *group,
{
struct fsnotify_mark *fsn_mark;
__u32 added;
+ int ret = 0;
pr_debug("%s: group=%p inode=%p\n", __func__, group, inode);
fsn_mark = fsnotify_find_inode_mark(group, inode);
if (!fsn_mark) {
- int ret;
-
if (atomic_read(&group->num_marks) > group->fanotify_data.max_marks)
return -ENOSPC;
fsnotify_init_mark(fsn_mark, fanotify_free_mark);
ret = fsnotify_add_mark(fsn_mark, group, inode, NULL, 0);
- if (ret) {
- fanotify_free_mark(fsn_mark);
- return ret;
- }
+ if (ret)
+ goto err;
}
added = fanotify_mark_add_to_mask(fsn_mark, mask, flags);
- fsnotify_put_mark(fsn_mark);
+
if (added & ~inode->i_fsnotify_mask)
fsnotify_recalc_inode_mask(inode);
- return 0;
+err:
+ fsnotify_put_mark(fsn_mark);
+ return ret;
}
/* fanotify syscalls */
/* fsnotify_alloc_group takes a ref. Dropped in fanotify_release */
group = fsnotify_alloc_group(&fanotify_fsnotify_ops);
- if (IS_ERR(group))
+ if (IS_ERR(group)) {
+ free_uid(user);
return PTR_ERR(group);
+ }
group->fanotify_data.user = user;
atomic_inc(&user->fanotify_listeners);
mutex_init(&group->fanotify_data.access_mutex);
init_waitqueue_head(&group->fanotify_data.access_waitq);
INIT_LIST_HEAD(&group->fanotify_data.access_list);
+ atomic_set(&group->fanotify_data.bypass_perm, 0);
#endif
switch (flags & FAN_ALL_CLASS_BITS) {
case FAN_CLASS_NOTIF:
if (flags & ~FAN_ALL_MARK_FLAGS)
return -EINVAL;
switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE | FAN_MARK_FLUSH)) {
- case FAN_MARK_ADD:
+ case FAN_MARK_ADD: /* fallthrough */
case FAN_MARK_REMOVE:
+ if (!mask)
+ return -EINVAL;
case FAN_MARK_FLUSH:
break;
default:
if (ret >= 0)
return ret;
+ fsnotify_put_group(group);
atomic_dec(&user->inotify_devs);
out_free_uid:
free_uid(user);
unsigned char misaligned;
unsigned char discard_misaligned;
- unsigned char no_cluster;
+ unsigned char cluster;
signed char discard_zeroes_data;
};
#endif
};
-#define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */
#define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */
#define QUEUE_FLAG_STOPPED 2 /* queue is stopped */
#define QUEUE_FLAG_SYNCFULL 3 /* read queue has been filled */
#define QUEUE_FLAG_SECDISCARD 19 /* supports SECDISCARD */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
- (1 << QUEUE_FLAG_CLUSTER) | \
(1 << QUEUE_FLAG_STACKABLE) | \
(1 << QUEUE_FLAG_SAME_COMP) | \
(1 << QUEUE_FLAG_ADD_RANDOM))
#define rq_data_dir(rq) ((rq)->cmd_flags & 1)
+static inline unsigned int blk_queue_cluster(struct request_queue *q)
+{
+ return q->limits.cluster;
+}
+
/*
* We regard a request as sync, if either a read or a sync write
*/
extern void blk_cleanup_queue(struct request_queue *);
extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
extern void blk_queue_bounce_limit(struct request_queue *, u64);
+extern void blk_limits_max_hw_sectors(struct queue_limits *, unsigned int);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_segments(struct request_queue *, unsigned short);
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
#define alloc_bootmem(x) \
__alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
+#define alloc_bootmem_align(x, align) \
+ __alloc_bootmem(x, align, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_nopanic(x) \
__alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_pages(x) \
*
* 2) this code must not be preempted for a duration longer than the
* 32-bit counter half period minus the longest period between two
- * calls to this code.
+ * calls to this code;
*
* Those requirements ensure proper update to the state bit in memory.
* This is usually not a problem in practice, but if it is then a kernel
* timer should be scheduled to manage for this code to be executed often
* enough.
*
+ * And finally:
+ *
+ * 3) the cnt_lo argument must be seen as a globally incrementing value,
+ * meaning that it should be a direct reference to the counter data which
+ * can be evaluated according to a specific ordering within the macro,
+ * and not the result of a previous evaluation stored in a variable.
+ *
+ * For example, this is wrong:
+ *
+ * u32 partial = get_hw_count();
+ * u64 full = cnt32_to_63(partial);
+ * return full;
+ *
+ * This is fine:
+ *
+ * u64 full = cnt32_to_63(get_hw_count());
+ * return full;
+ *
* Note that the top bit (bit 63) in the returned value should be considered
* as garbage. It is not cleared here because callers are likely to use a
* multiplier on the returned value which can get rid of the top bit
FAN_ALL_PERM_EVENTS |\
FAN_Q_OVERFLOW)
-#define FANOTIFY_METADATA_VERSION 2
+#define FANOTIFY_METADATA_VERSION 3
struct fanotify_event_metadata {
__u32 event_len;
- __u32 vers;
+ __u8 vers;
+ __u8 reserved;
+ __u16 metadata_len;
__aligned_u64 mask;
__s32 fd;
__s32 pid;
struct fanotify_response {
__s32 fd;
__u32 response;
-} __attribute__ ((packed));
+};
/* Legit userspace responses to a _PERM event */
#define FAN_ALLOW 0x01
#define FAN_DENY 0x02
+/* No fd set in event */
+#define FAN_NOFD -1
/* Helper functions to deal with fanotify_event_metadata buffers */
#define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata))
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
- /* FMODE_NONOTIFY must never be set from user */
- file->f_mode &= ~FMODE_NONOTIFY;
-
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
struct mutex access_mutex;
struct list_head access_list;
wait_queue_head_t access_waitq;
- bool bypass_perm; /* protected by access_mutex */
+ atomic_t bypass_perm;
#endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */
int f_flags;
unsigned int max_marks;
#define EVIOCGREP _IOR('E', 0x03, unsigned int[2]) /* get repeat settings */
#define EVIOCSREP _IOW('E', 0x03, unsigned int[2]) /* set repeat settings */
-#define EVIOCGKEYCODE _IOR('E', 0x04, struct input_keymap_entry) /* get keycode */
-#define EVIOCSKEYCODE _IOW('E', 0x04, struct input_keymap_entry) /* set keycode */
+#define EVIOCGKEYCODE _IOR('E', 0x04, unsigned int[2]) /* get keycode */
+#define EVIOCGKEYCODE_V2 _IOR('E', 0x04, struct input_keymap_entry)
+#define EVIOCSKEYCODE _IOW('E', 0x04, unsigned int[2]) /* set keycode */
+#define EVIOCSKEYCODE_V2 _IOW('E', 0x04, struct input_keymap_entry)
#define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */
#define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
extern struct resource ioport_resource;
extern struct resource iomem_resource;
-extern int resource_alloc_from_bottom;
extern struct resource *request_resource_conflict(struct resource *root, struct resource *new);
extern int request_resource(struct resource *root, struct resource *new);
extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new);
extern int insert_resource(struct resource *parent, struct resource *new);
extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new);
+extern void arch_remove_reservations(struct resource *avail);
extern int allocate_resource(struct resource *root, struct resource *new,
resource_size_t size, resource_size_t min,
resource_size_t max, resource_size_t align,
int exclusive;
struct list_head rotation_list;
int jiffies_interval;
+ struct pmu *active_pmu;
};
struct perf_output_handle {
static inline bool pm_runtime_suspended(struct device *dev)
{
- return dev->power.runtime_status == RPM_SUSPENDED;
+ return dev->power.runtime_status == RPM_SUSPENDED
+ && !dev->power.disable_depth;
}
static inline void pm_runtime_mark_last_busy(struct device *dev)
extern unsigned long this_cpu_load(void);
-extern void calc_global_load(void);
+extern void calc_global_load(unsigned long ticks);
extern unsigned long get_parent_ip(unsigned long addr);
return 0;
}
-extern char * nvram_get(const char *name);
+#ifdef CONFIG_BCM47XX
+#include <asm/mach-bcm47xx/nvram.h>
/* Get the device MAC address */
static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
{
-#ifdef CONFIG_BCM47XX
- char *res = nvram_get("et0macaddr");
- if (res)
- memcpy(macaddr, res, 6);
-#endif
+ char buf[20];
+ if (nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0)
+ return;
+ nvram_parse_macaddr(buf, macaddr);
}
+#else
+static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
+{
+}
+#endif
extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
struct pci_dev *pdev);
unsigned int notification, void *arg);
/* The control handler. May be NULL. */
struct v4l2_ctrl_handler *ctrl_handler;
+ /* BKL replacement mutex. Temporary solution only. */
+ struct mutex ioctl_lock;
};
/* Initialize v4l2_dev and make dev->driver_data point to v4l2_dev.
setup_thread_stack(tsk, orig);
clear_user_return_notifier(tsk);
+ clear_tsk_need_resched(tsk);
stackend = end_of_stack(tsk);
*stackend = STACK_END_MAGIC; /* for overflow detection */
rcu_read_lock();
list_for_each_entry_rcu(pmu, &pmus, entry) {
cpuctx = get_cpu_ptr(pmu->pmu_cpu_context);
+ if (cpuctx->active_pmu != pmu)
+ goto next;
perf_event_task_ctx(&cpuctx->ctx, task_event);
ctx = task_event->task_ctx;
rcu_read_lock();
list_for_each_entry_rcu(pmu, &pmus, entry) {
cpuctx = get_cpu_ptr(pmu->pmu_cpu_context);
+ if (cpuctx->active_pmu != pmu)
+ goto next;
perf_event_comm_ctx(&cpuctx->ctx, comm_event);
ctxn = pmu->task_ctx_nr;
rcu_read_lock();
list_for_each_entry_rcu(pmu, &pmus, entry) {
cpuctx = get_cpu_ptr(pmu->pmu_cpu_context);
+ if (cpuctx->active_pmu != pmu)
+ goto next;
perf_event_mmap_ctx(&cpuctx->ctx, mmap_event,
vma->vm_flags & VM_EXEC);
break;
}
- if (event_id > PERF_COUNT_SW_MAX)
+ if (event_id >= PERF_COUNT_SW_MAX)
return -ENOENT;
if (!event->parent) {
return NULL;
}
-static void free_pmu_context(void * __percpu cpu_context)
+static void update_pmu_context(struct pmu *pmu, struct pmu *old_pmu)
{
- struct pmu *pmu;
+ int cpu;
+
+ for_each_possible_cpu(cpu) {
+ struct perf_cpu_context *cpuctx;
+
+ cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu);
+
+ if (cpuctx->active_pmu == old_pmu)
+ cpuctx->active_pmu = pmu;
+ }
+}
+
+static void free_pmu_context(struct pmu *pmu)
+{
+ struct pmu *i;
mutex_lock(&pmus_lock);
/*
* Like a real lame refcount.
*/
- list_for_each_entry(pmu, &pmus, entry) {
- if (pmu->pmu_cpu_context == cpu_context)
+ list_for_each_entry(i, &pmus, entry) {
+ if (i->pmu_cpu_context == pmu->pmu_cpu_context) {
+ update_pmu_context(i, pmu);
goto out;
+ }
}
- free_percpu(cpu_context);
+ free_percpu(pmu->pmu_cpu_context);
out:
mutex_unlock(&pmus_lock);
}
cpuctx->ctx.pmu = pmu;
cpuctx->jiffies_interval = 1;
INIT_LIST_HEAD(&cpuctx->rotation_list);
+ cpuctx->active_pmu = pmu;
}
got_cpu_context:
synchronize_rcu();
free_percpu(pmu->pmu_disable_count);
- free_pmu_context(pmu->pmu_cpu_context);
+ free_pmu_context(pmu);
}
struct pmu *perf_init_event(struct perf_event *event)
#include "power.h"
-#define HIBERNATE_SIG "LINHIB0001"
+#define HIBERNATE_SIG "S1SUSPEND"
/*
* The swap map is a data structure used for keeping track of each page
free_all_swap_pages(data->swap);
if (data->frozen)
thaw_processes();
- pm_notifier_call_chain(data->mode == O_WRONLY ?
+ pm_notifier_call_chain(data->mode == O_RDONLY ?
PM_POST_HIBERNATION : PM_POST_RESTORE);
atomic_inc(&snapshot_device_available);
static DEFINE_RWLOCK(resource_lock);
-/*
- * By default, we allocate free space bottom-up. The architecture can request
- * top-down by clearing this flag. The user can override the architecture's
- * choice with the "resource_alloc_from_bottom" kernel boot option, but that
- * should only be a debugging tool.
- */
-int resource_alloc_from_bottom = 1;
-
-static __init int setup_alloc_from_bottom(char *s)
-{
- printk(KERN_INFO
- "resource: allocating from bottom-up; please report a bug\n");
- resource_alloc_from_bottom = 1;
- return 0;
-}
-early_param("resource_alloc_from_bottom", setup_alloc_from_bottom);
-
static void *r_next(struct seq_file *m, void *v, loff_t *pos)
{
struct resource *p = v;
return walk_system_ram_range(pfn, 1, NULL, __is_ram) == 1;
}
+void __weak arch_remove_reservations(struct resource *avail)
+{
+}
+
static resource_size_t simple_align_resource(void *data,
const struct resource *avail,
resource_size_t size,
return res1->start <= res2->start && res1->end >= res2->end;
}
-/*
- * Find the resource before "child" in the sibling list of "root" children.
- */
-static struct resource *find_sibling_prev(struct resource *root, struct resource *child)
-{
- struct resource *this;
-
- for (this = root->child; this; this = this->sibling)
- if (this->sibling == child)
- return this;
-
- return NULL;
-}
-
/*
* Find empty slot in the resource tree given range and alignment.
- * This version allocates from the end of the root resource first.
- */
-static int find_resource_from_top(struct resource *root, struct resource *new,
- resource_size_t size, resource_size_t min,
- resource_size_t max, resource_size_t align,
- resource_size_t (*alignf)(void *,
- const struct resource *,
- resource_size_t,
- resource_size_t),
- void *alignf_data)
-{
- struct resource *this;
- struct resource tmp, avail, alloc;
-
- tmp.start = root->end;
- tmp.end = root->end;
-
- this = find_sibling_prev(root, NULL);
- for (;;) {
- if (this) {
- if (this->end < root->end)
- tmp.start = this->end + 1;
- } else
- tmp.start = root->start;
-
- resource_clip(&tmp, min, max);
-
- /* Check for overflow after ALIGN() */
- avail = *new;
- avail.start = ALIGN(tmp.start, align);
- avail.end = tmp.end;
- if (avail.start >= tmp.start) {
- alloc.start = alignf(alignf_data, &avail, size, align);
- alloc.end = alloc.start + size - 1;
- if (resource_contains(&avail, &alloc)) {
- new->start = alloc.start;
- new->end = alloc.end;
- return 0;
- }
- }
-
- if (!this || this->start == root->start)
- break;
-
- tmp.end = this->start - 1;
- this = find_sibling_prev(root, this);
- }
- return -EBUSY;
-}
-
-/*
- * Find empty slot in the resource tree given range and alignment.
- * This version allocates from the beginning of the root resource first.
*/
static int find_resource(struct resource *root, struct resource *new,
resource_size_t size, resource_size_t min,
struct resource *this = root->child;
struct resource tmp = *new, avail, alloc;
+ tmp.flags = new->flags;
tmp.start = root->start;
/*
- * Skip past an allocated resource that starts at 0, since the
- * assignment of this->start - 1 to tmp->end below would cause an
- * underflow.
+ * Skip past an allocated resource that starts at 0, since the assignment
+ * of this->start - 1 to tmp->end below would cause an underflow.
*/
if (this && this->start == 0) {
tmp.start = this->end + 1;
this = this->sibling;
}
- for (;;) {
+ for(;;) {
if (this)
tmp.end = this->start - 1;
else
tmp.end = root->end;
resource_clip(&tmp, min, max);
+ arch_remove_reservations(&tmp);
/* Check for overflow after ALIGN() */
avail = *new;
return 0;
}
}
-
if (!this)
break;
-
tmp.start = this->end + 1;
this = this->sibling;
}
alignf = simple_align_resource;
write_lock(&resource_lock);
- if (resource_alloc_from_bottom)
- err = find_resource(root, new, size, min, max, align, alignf, alignf_data);
- else
- err = find_resource_from_top(root, new, size, min, max, align, alignf, alignf_data);
+ err = find_resource(root, new, size, min, max, align, alignf, alignf_data);
if (err >= 0 && __request_resource(root, new))
err = -EBUSY;
write_unlock(&resource_lock);
#endif /* CONFIG_CGROUP_SCHED */
-static u64 irq_time_cpu(int cpu);
-static void sched_irq_time_avg_update(struct rq *rq, u64 irq_time);
+static void update_rq_clock_task(struct rq *rq, s64 delta);
-inline void update_rq_clock(struct rq *rq)
+static void update_rq_clock(struct rq *rq)
{
- if (!rq->skip_clock_update) {
- int cpu = cpu_of(rq);
- u64 irq_time;
+ s64 delta;
- rq->clock = sched_clock_cpu(cpu);
- irq_time = irq_time_cpu(cpu);
- if (rq->clock - irq_time > rq->clock_task)
- rq->clock_task = rq->clock - irq_time;
+ if (rq->skip_clock_update)
+ return;
- sched_irq_time_avg_update(rq, irq_time);
- }
+ delta = sched_clock_cpu(cpu_of(rq)) - rq->clock;
+ rq->clock += delta;
+ update_rq_clock_task(rq, delta);
}
/*
* They are read and saved off onto struct rq in update_rq_clock().
* This may result in other CPU reading this CPU's irq time and can
* race with irq/account_system_vtime on this CPU. We would either get old
- * or new value (or semi updated value on 32 bit) with a side effect of
- * accounting a slice of irq time to wrong task when irq is in progress
- * while we read rq->clock. That is a worthy compromise in place of having
- * locks on each irq in account_system_time.
+ * or new value with a side effect of accounting a slice of irq time to wrong
+ * task when irq is in progress while we read rq->clock. That is a worthy
+ * compromise in place of having locks on each irq in account_system_time.
*/
static DEFINE_PER_CPU(u64, cpu_hardirq_time);
static DEFINE_PER_CPU(u64, cpu_softirq_time);
sched_clock_irqtime = 0;
}
-static u64 irq_time_cpu(int cpu)
+#ifndef CONFIG_64BIT
+static DEFINE_PER_CPU(seqcount_t, irq_time_seq);
+
+static inline void irq_time_write_begin(void)
{
- if (!sched_clock_irqtime)
- return 0;
+ __this_cpu_inc(irq_time_seq.sequence);
+ smp_wmb();
+}
+
+static inline void irq_time_write_end(void)
+{
+ smp_wmb();
+ __this_cpu_inc(irq_time_seq.sequence);
+}
+
+static inline u64 irq_time_read(int cpu)
+{
+ u64 irq_time;
+ unsigned seq;
+ do {
+ seq = read_seqcount_begin(&per_cpu(irq_time_seq, cpu));
+ irq_time = per_cpu(cpu_softirq_time, cpu) +
+ per_cpu(cpu_hardirq_time, cpu);
+ } while (read_seqcount_retry(&per_cpu(irq_time_seq, cpu), seq));
+
+ return irq_time;
+}
+#else /* CONFIG_64BIT */
+static inline void irq_time_write_begin(void)
+{
+}
+
+static inline void irq_time_write_end(void)
+{
+}
+
+static inline u64 irq_time_read(int cpu)
+{
return per_cpu(cpu_softirq_time, cpu) + per_cpu(cpu_hardirq_time, cpu);
}
+#endif /* CONFIG_64BIT */
+/*
+ * Called before incrementing preempt_count on {soft,}irq_enter
+ * and before decrementing preempt_count on {soft,}irq_exit.
+ */
void account_system_vtime(struct task_struct *curr)
{
unsigned long flags;
+ s64 delta;
int cpu;
- u64 now, delta;
if (!sched_clock_irqtime)
return;
local_irq_save(flags);
cpu = smp_processor_id();
- now = sched_clock_cpu(cpu);
- delta = now - per_cpu(irq_start_time, cpu);
- per_cpu(irq_start_time, cpu) = now;
+ delta = sched_clock_cpu(cpu) - __this_cpu_read(irq_start_time);
+ __this_cpu_add(irq_start_time, delta);
+
+ irq_time_write_begin();
/*
* We do not account for softirq time from ksoftirqd here.
* We want to continue accounting softirq time to ksoftirqd thread
* that do not consume any time, but still wants to run.
*/
if (hardirq_count())
- per_cpu(cpu_hardirq_time, cpu) += delta;
+ __this_cpu_add(cpu_hardirq_time, delta);
else if (in_serving_softirq() && !(curr->flags & PF_KSOFTIRQD))
- per_cpu(cpu_softirq_time, cpu) += delta;
+ __this_cpu_add(cpu_softirq_time, delta);
+ irq_time_write_end();
local_irq_restore(flags);
}
EXPORT_SYMBOL_GPL(account_system_vtime);
-static void sched_irq_time_avg_update(struct rq *rq, u64 curr_irq_time)
+static void update_rq_clock_task(struct rq *rq, s64 delta)
{
- if (sched_clock_irqtime && sched_feat(NONIRQ_POWER)) {
- u64 delta_irq = curr_irq_time - rq->prev_irq_time;
- rq->prev_irq_time = curr_irq_time;
- sched_rt_avg_update(rq, delta_irq);
- }
+ s64 irq_delta;
+
+ irq_delta = irq_time_read(cpu_of(rq)) - rq->prev_irq_time;
+
+ /*
+ * Since irq_time is only updated on {soft,}irq_exit, we might run into
+ * this case when a previous update_rq_clock() happened inside a
+ * {soft,}irq region.
+ *
+ * When this happens, we stop ->clock_task and only update the
+ * prev_irq_time stamp to account for the part that fit, so that a next
+ * update will consume the rest. This ensures ->clock_task is
+ * monotonic.
+ *
+ * It does however cause some slight miss-attribution of {soft,}irq
+ * time, a more accurate solution would be to update the irq_time using
+ * the current rq->clock timestamp, except that would require using
+ * atomic ops.
+ */
+ if (irq_delta > delta)
+ irq_delta = delta;
+
+ rq->prev_irq_time += irq_delta;
+ delta -= irq_delta;
+ rq->clock_task += delta;
+
+ if (irq_delta && sched_feat(NONIRQ_POWER))
+ sched_rt_avg_update(rq, irq_delta);
}
-#else
+#else /* CONFIG_IRQ_TIME_ACCOUNTING */
-static u64 irq_time_cpu(int cpu)
+static void update_rq_clock_task(struct rq *rq, s64 delta)
{
- return 0;
+ rq->clock_task += delta;
}
-static void sched_irq_time_avg_update(struct rq *rq, u64 curr_irq_time) { }
-
-#endif
+#endif /* CONFIG_IRQ_TIME_ACCOUNTING */
#include "sched_idletask.c"
#include "sched_fair.c"
* A queue event has occurred, and we're going to schedule. In
* this case, we can save a useless back to back clock update.
*/
- if (test_tsk_need_resched(rq->curr))
+ if (rq->curr->se.on_rq && test_tsk_need_resched(rq->curr))
rq->skip_clock_update = 1;
}
return delta;
}
+static unsigned long
+calc_load(unsigned long load, unsigned long exp, unsigned long active)
+{
+ load *= exp;
+ load += active * (FIXED_1 - exp);
+ load += 1UL << (FSHIFT - 1);
+ return load >> FSHIFT;
+}
+
#ifdef CONFIG_NO_HZ
/*
* For NO_HZ we delay the active fold to the next LOAD_FREQ update.
return delta;
}
+
+/**
+ * fixed_power_int - compute: x^n, in O(log n) time
+ *
+ * @x: base of the power
+ * @frac_bits: fractional bits of @x
+ * @n: power to raise @x to.
+ *
+ * By exploiting the relation between the definition of the natural power
+ * function: x^n := x*x*...*x (x multiplied by itself for n times), and
+ * the binary encoding of numbers used by computers: n := \Sum n_i * 2^i,
+ * (where: n_i \elem {0, 1}, the binary vector representing n),
+ * we find: x^n := x^(\Sum n_i * 2^i) := \Prod x^(n_i * 2^i), which is
+ * of course trivially computable in O(log_2 n), the length of our binary
+ * vector.
+ */
+static unsigned long
+fixed_power_int(unsigned long x, unsigned int frac_bits, unsigned int n)
+{
+ unsigned long result = 1UL << frac_bits;
+
+ if (n) for (;;) {
+ if (n & 1) {
+ result *= x;
+ result += 1UL << (frac_bits - 1);
+ result >>= frac_bits;
+ }
+ n >>= 1;
+ if (!n)
+ break;
+ x *= x;
+ x += 1UL << (frac_bits - 1);
+ x >>= frac_bits;
+ }
+
+ return result;
+}
+
+/*
+ * a1 = a0 * e + a * (1 - e)
+ *
+ * a2 = a1 * e + a * (1 - e)
+ * = (a0 * e + a * (1 - e)) * e + a * (1 - e)
+ * = a0 * e^2 + a * (1 - e) * (1 + e)
+ *
+ * a3 = a2 * e + a * (1 - e)
+ * = (a0 * e^2 + a * (1 - e) * (1 + e)) * e + a * (1 - e)
+ * = a0 * e^3 + a * (1 - e) * (1 + e + e^2)
+ *
+ * ...
+ *
+ * an = a0 * e^n + a * (1 - e) * (1 + e + ... + e^n-1) [1]
+ * = a0 * e^n + a * (1 - e) * (1 - e^n)/(1 - e)
+ * = a0 * e^n + a * (1 - e^n)
+ *
+ * [1] application of the geometric series:
+ *
+ * n 1 - x^(n+1)
+ * S_n := \Sum x^i = -------------
+ * i=0 1 - x
+ */
+static unsigned long
+calc_load_n(unsigned long load, unsigned long exp,
+ unsigned long active, unsigned int n)
+{
+
+ return calc_load(load, fixed_power_int(exp, FSHIFT, n), active);
+}
+
+/*
+ * NO_HZ can leave us missing all per-cpu ticks calling
+ * calc_load_account_active(), but since an idle CPU folds its delta into
+ * calc_load_tasks_idle per calc_load_account_idle(), all we need to do is fold
+ * in the pending idle delta if our idle period crossed a load cycle boundary.
+ *
+ * Once we've updated the global active value, we need to apply the exponential
+ * weights adjusted to the number of cycles missed.
+ */
+static void calc_global_nohz(unsigned long ticks)
+{
+ long delta, active, n;
+
+ if (time_before(jiffies, calc_load_update))
+ return;
+
+ /*
+ * If we crossed a calc_load_update boundary, make sure to fold
+ * any pending idle changes, the respective CPUs might have
+ * missed the tick driven calc_load_account_active() update
+ * due to NO_HZ.
+ */
+ delta = calc_load_fold_idle();
+ if (delta)
+ atomic_long_add(delta, &calc_load_tasks);
+
+ /*
+ * If we were idle for multiple load cycles, apply them.
+ */
+ if (ticks >= LOAD_FREQ) {
+ n = ticks / LOAD_FREQ;
+
+ active = atomic_long_read(&calc_load_tasks);
+ active = active > 0 ? active * FIXED_1 : 0;
+
+ avenrun[0] = calc_load_n(avenrun[0], EXP_1, active, n);
+ avenrun[1] = calc_load_n(avenrun[1], EXP_5, active, n);
+ avenrun[2] = calc_load_n(avenrun[2], EXP_15, active, n);
+
+ calc_load_update += n * LOAD_FREQ;
+ }
+
+ /*
+ * Its possible the remainder of the above division also crosses
+ * a LOAD_FREQ period, the regular check in calc_global_load()
+ * which comes after this will take care of that.
+ *
+ * Consider us being 11 ticks before a cycle completion, and us
+ * sleeping for 4*LOAD_FREQ + 22 ticks, then the above code will
+ * age us 4 cycles, and the test in calc_global_load() will
+ * pick up the final one.
+ */
+}
#else
static void calc_load_account_idle(struct rq *this_rq)
{
{
return 0;
}
+
+static void calc_global_nohz(unsigned long ticks)
+{
+}
#endif
/**
loads[2] = (avenrun[2] + offset) << shift;
}
-static unsigned long
-calc_load(unsigned long load, unsigned long exp, unsigned long active)
-{
- load *= exp;
- load += active * (FIXED_1 - exp);
- return load >> FSHIFT;
-}
-
/*
* calc_load - update the avenrun load estimates 10 ticks after the
* CPUs have updated calc_load_tasks.
*/
-void calc_global_load(void)
+void calc_global_load(unsigned long ticks)
{
- unsigned long upd = calc_load_update + 10;
long active;
- if (time_before(jiffies, upd))
+ calc_global_nohz(ticks);
+
+ if (time_before(jiffies, calc_load_update + 10))
return;
active = atomic_long_read(&calc_load_tasks);
{
if (prev->se.on_rq)
update_rq_clock(rq);
- rq->skip_clock_update = 0;
prev->sched_class->put_prev_task(rq, prev);
}
hrtick_clear(rq);
raw_spin_lock_irq(&rq->lock);
- clear_tsk_need_resched(prev);
switch_count = &prev->nivcsw;
if (prev->state && !(preempt_count() & PREEMPT_ACTIVE)) {
put_prev_task(rq, prev);
next = pick_next_task(rq);
+ clear_tsk_need_resched(prev);
+ rq->skip_clock_update = 0;
if (likely(prev != next)) {
sched_info_switch(prev, next);
struct tvec_base *base = __get_cpu_var(tvec_bases);
unsigned long expires;
+ /*
+ * Pretend that there is no timer pending if the cpu is offline.
+ * Possible pending timers will be migrated later to an active cpu.
+ */
+ if (cpu_is_offline(smp_processor_id()))
+ return now + NEXT_TIMER_MAX_DELTA;
spin_lock(&base->lock);
if (time_before_eq(base->next_timer, base->timer_jiffies))
base->next_timer = __next_timer_interrupt(base);
{
jiffies_64 += ticks;
update_wall_time();
- calc_global_load();
+ calc_global_load(ticks);
}
#ifdef __ARCH_WANT_SYS_ALARM
return count;
}
+static loff_t tracing_seek(struct file *file, loff_t offset, int origin)
+{
+ if (file->f_mode & FMODE_READ)
+ return seq_lseek(file, offset, origin);
+ else
+ return 0;
+}
+
static const struct file_operations tracing_fops = {
.open = tracing_open,
.read = seq_read,
.write = tracing_write_stub,
- .llseek = seq_lseek,
+ .llseek = tracing_seek,
.release = tracing_release,
};
static void fn_ELF_R_INFO(Elf_Rel *const rp, unsigned sym, unsigned type)
{
- rp->r_info = ELF_R_INFO(sym, type);
+ rp->r_info = _w(ELF_R_INFO(sym, type));
}
static void (*Elf_r_info)(Elf_Rel *const rp, unsigned sym, unsigned type) = fn_ELF_R_INFO;
-I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
--extra=+f --c-kinds=-px \
--regex-asm='/^ENTRY\(([^)]*)\).*/\1/' \
- --regex-c='/^SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/sys_\1/'
+ --regex-c='/^SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/sys_\1/' \
+ --regex-c++='/^TRACE_EVENT\(([^,)]*).*/trace_\1/' \
+ --regex-c++='/^DEFINE_EVENT\(([^,)]*).*/trace_\1/'
all_kconfigs | xargs $1 -a \
--langdef=kconfig --language-force=kconfig \
{
struct alc_spec *spec = codec->spec;
struct auto_pin_cfg *cfg = &spec->autocfg;
- int i, err;
+ int i, err, type;
+ int type_idx = 0;
hda_nid_t nid;
for (i = 0; i < cfg->num_inputs; i++) {
nid = cfg->inputs[i].pin;
if (get_wcaps(codec, nid) & AC_WCAP_IN_AMP) {
char label[32];
+ type = cfg->inputs[i].type;
+ if (i > 0 && type == cfg->inputs[i - 1].type)
+ type_idx++;
+ else
+ type_idx = 0;
snprintf(label, sizeof(label), "%s Boost",
hda_get_autocfg_input_label(codec, cfg, i));
- err = add_control(spec, ALC_CTL_WIDGET_VOL, label, 0,
+ err = add_control(spec, ALC_CTL_WIDGET_VOL, label,
+ type_idx,
HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
if (err < 0)
return err;
enum {
ALC269_FIXUP_SONY_VAIO,
ALC269_FIXUP_DELL_M101Z,
+ ALC269_FIXUP_LENOVO_EDGE14,
+ ALC269_FIXUP_ASUS_G73JW,
};
static const struct alc_fixup alc269_fixups[] = {
{}
}
},
+ [ALC269_FIXUP_LENOVO_EDGE14] = {
+ .sku = ALC_FIXUP_SKU_IGNORE,
+ },
+ [ALC269_FIXUP_ASUS_G73JW] = {
+ .pins = (const struct alc_pincfg[]) {
+ { 0x17, 0x99130111 }, /* subwoofer */
+ { }
+ }
+ },
};
static struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK_VENDOR(0x104d, "Sony VAIO", ALC269_FIXUP_SONY_VAIO),
SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
+ SND_PCI_QUIRK(0x17aa, 0x21b8, "Thinkpad Edge 14", ALC269_FIXUP_LENOVO_EDGE14),
+ SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW),
{}
};
static const u16 wm8580_reg[] = {
0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
- 0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/
+ 0x0010, 0x0002, 0x0002, 0x00c2, /*R11*/
0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
- return wm8904->deemph;
+ ucontrol->value.enumerated.item[0] = wm8904->deemph;
+ return 0;
}
static int wm8904_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
- return wm8955->deemph;
+ ucontrol->value.enumerated.item[0] = wm8955->deemph;
+ return 0;
}
static int wm8955_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
- return wm8960->deemph;
+ ucontrol->value.enumerated.item[0] = wm8960->deemph;
+ return 0;
}
static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
case SND_SOC_DAPM_STREAM_RESUME:
sys_power = 1;
break;
+ case SND_SOC_DAPM_STREAM_STOP:
+ sys_power = !!codec->active;
+ break;
case SND_SOC_DAPM_STREAM_SUSPEND:
sys_power = 0;
break;
projects / karo-tx-linux.git / commitdiff