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-rw-r--r--arch/arm/mach-ixp4xx/Kconfig6
-rw-r--r--arch/arm/mach-ixp4xx/Makefile1
-rw-r--r--arch/arm/mach-ixp4xx/goramo_mlr.c507
-rw-r--r--arch/arm/mach-ixp4xx/include/mach/cpu.h7
-rw-r--r--arch/arm/mach-ixp4xx/include/mach/qmgr.h69
-rw-r--r--arch/arm/mach-ixp4xx/ixp4xx_npe.c9
-rw-r--r--arch/arm/mach-ixp4xx/ixp4xx_qmgr.c135
7 files changed, 687 insertions, 47 deletions
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index 2c5a02b8520e..264f4d59f898 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -78,6 +78,12 @@ config MACH_IXDP465
IXDP465 Development Platform (Also known as BMP).
For more information on this platform, see <file:Documentation/arm/IXP4xx>.
+config MACH_GORAMO_MLR
+ bool "GORAMO Multi Link Router"
+ help
+ Say 'Y' here if you want your kernel to support GORAMO
+ MultiLink router.
+
config MACH_KIXRP435
bool "KIXRP435"
help
diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile
index 2e6bbf927a74..47d1f60d23fa 100644
--- a/arch/arm/mach-ixp4xx/Makefile
+++ b/arch/arm/mach-ixp4xx/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_MACH_DSMG600) += dsmg600-setup.o
obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o
obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o
obj-$(CONFIG_MACH_FSG) += fsg-setup.o
+obj-$(CONFIG_MACH_GORAMO_MLR) += goramo_mlr.o
obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o
obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o
diff --git a/arch/arm/mach-ixp4xx/goramo_mlr.c b/arch/arm/mach-ixp4xx/goramo_mlr.c
new file mode 100644
index 000000000000..a733b8ff3cec
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/goramo_mlr.c
@@ -0,0 +1,507 @@
+/*
+ * Goramo MultiLink router platform code
+ * Copyright (C) 2006-2009 Krzysztof Halasa <khc@pm.waw.pl>
+ */
+
+#include <linux/delay.h>
+#include <linux/hdlc.h>
+#include <linux/i2c-gpio.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/serial_8250.h>
+#include <asm/mach-types.h>
+#include <asm/system.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/pci.h>
+
+#define xgpio_irq(n) (IRQ_IXP4XX_GPIO ## n)
+#define gpio_irq(n) xgpio_irq(n)
+
+#define SLOT_ETHA 0x0B /* IDSEL = AD21 */
+#define SLOT_ETHB 0x0C /* IDSEL = AD20 */
+#define SLOT_MPCI 0x0D /* IDSEL = AD19 */
+#define SLOT_NEC 0x0E /* IDSEL = AD18 */
+
+#define IRQ_ETHA IRQ_IXP4XX_GPIO4
+#define IRQ_ETHB IRQ_IXP4XX_GPIO5
+#define IRQ_NEC IRQ_IXP4XX_GPIO3
+#define IRQ_MPCI IRQ_IXP4XX_GPIO12
+
+/* GPIO lines */
+#define GPIO_SCL 0
+#define GPIO_SDA 1
+#define GPIO_STR 2
+#define GPIO_HSS0_DCD_N 6
+#define GPIO_HSS1_DCD_N 7
+#define GPIO_HSS0_CTS_N 10
+#define GPIO_HSS1_CTS_N 11
+#define GPIO_HSS1_RTS_N 13
+#define GPIO_HSS0_RTS_N 14
+
+/* Control outputs from 74HC4094 */
+#define CONTROL_HSS0_CLK_INT 0
+#define CONTROL_HSS1_CLK_INT 1
+#define CONTROL_HSS0_DTR_N 2
+#define CONTROL_HSS1_DTR_N 3
+#define CONTROL_EXT 4
+#define CONTROL_AUTO_RESET 5
+#define CONTROL_PCI_RESET_N 6
+#define CONTROL_EEPROM_WC_N 7
+
+/* offsets from start of flash ROM = 0x50000000 */
+#define CFG_ETH0_ADDRESS 0x40 /* 6 bytes */
+#define CFG_ETH1_ADDRESS 0x46 /* 6 bytes */
+#define CFG_REV 0x4C /* u32 */
+#define CFG_SDRAM_SIZE 0x50 /* u32 */
+#define CFG_SDRAM_CONF 0x54 /* u32 */
+#define CFG_SDRAM_MODE 0x58 /* u32 */
+#define CFG_SDRAM_REFRESH 0x5C /* u32 */
+
+#define CFG_HW_BITS 0x60 /* u32 */
+#define CFG_HW_USB_PORTS 0x00000007 /* 0 = no NEC chip, 1-5 = ports # */
+#define CFG_HW_HAS_PCI_SLOT 0x00000008
+#define CFG_HW_HAS_ETH0 0x00000010
+#define CFG_HW_HAS_ETH1 0x00000020
+#define CFG_HW_HAS_HSS0 0x00000040
+#define CFG_HW_HAS_HSS1 0x00000080
+#define CFG_HW_HAS_UART0 0x00000100
+#define CFG_HW_HAS_UART1 0x00000200
+#define CFG_HW_HAS_EEPROM 0x00000400
+
+#define FLASH_CMD_READ_ARRAY 0xFF
+#define FLASH_CMD_READ_ID 0x90
+#define FLASH_SER_OFF 0x102 /* 0x81 in 16-bit mode */
+
+static u32 hw_bits = 0xFFFFFFFD; /* assume all hardware present */;
+static u8 control_value;
+
+static void set_scl(u8 value)
+{
+ gpio_line_set(GPIO_SCL, !!value);
+ udelay(3);
+}
+
+static void set_sda(u8 value)
+{
+ gpio_line_set(GPIO_SDA, !!value);
+ udelay(3);
+}
+
+static void set_str(u8 value)
+{
+ gpio_line_set(GPIO_STR, !!value);
+ udelay(3);
+}
+
+static inline void set_control(int line, int value)
+{
+ if (value)
+ control_value |= (1 << line);
+ else
+ control_value &= ~(1 << line);
+}
+
+
+static void output_control(void)
+{
+ int i;
+
+ gpio_line_config(GPIO_SCL, IXP4XX_GPIO_OUT);
+ gpio_line_config(GPIO_SDA, IXP4XX_GPIO_OUT);
+
+ for (i = 0; i < 8; i++) {
+ set_scl(0);
+ set_sda(control_value & (0x80 >> i)); /* MSB first */
+ set_scl(1); /* active edge */
+ }
+
+ set_str(1);
+ set_str(0);
+
+ set_scl(0);
+ set_sda(1); /* Be ready for START */
+ set_scl(1);
+}
+
+
+static void (*set_carrier_cb_tab[2])(void *pdev, int carrier);
+
+static int hss_set_clock(int port, unsigned int clock_type)
+{
+ int ctrl_int = port ? CONTROL_HSS1_CLK_INT : CONTROL_HSS0_CLK_INT;
+
+ switch (clock_type) {
+ case CLOCK_DEFAULT:
+ case CLOCK_EXT:
+ set_control(ctrl_int, 0);
+ output_control();
+ return CLOCK_EXT;
+
+ case CLOCK_INT:
+ set_control(ctrl_int, 1);
+ output_control();
+ return CLOCK_INT;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static irqreturn_t hss_dcd_irq(int irq, void *pdev)
+{
+ int i, port = (irq == gpio_irq(GPIO_HSS1_DCD_N));
+ gpio_line_get(port ? GPIO_HSS1_DCD_N : GPIO_HSS0_DCD_N, &i);
+ set_carrier_cb_tab[port](pdev, !i);
+ return IRQ_HANDLED;
+}
+
+
+static int hss_open(int port, void *pdev,
+ void (*set_carrier_cb)(void *pdev, int carrier))
+{
+ int i, irq;
+
+ if (!port)
+ irq = gpio_irq(GPIO_HSS0_DCD_N);
+ else
+ irq = gpio_irq(GPIO_HSS1_DCD_N);
+
+ gpio_line_get(port ? GPIO_HSS1_DCD_N : GPIO_HSS0_DCD_N, &i);
+ set_carrier_cb(pdev, !i);
+
+ set_carrier_cb_tab[!!port] = set_carrier_cb;
+
+ if ((i = request_irq(irq, hss_dcd_irq, 0, "IXP4xx HSS", pdev)) != 0) {
+ printk(KERN_ERR "ixp4xx_hss: failed to request IRQ%i (%i)\n",
+ irq, i);
+ return i;
+ }
+
+ set_control(port ? CONTROL_HSS1_DTR_N : CONTROL_HSS0_DTR_N, 0);
+ output_control();
+ gpio_line_set(port ? GPIO_HSS1_RTS_N : GPIO_HSS0_RTS_N, 0);
+ return 0;
+}
+
+static void hss_close(int port, void *pdev)
+{
+ free_irq(port ? gpio_irq(GPIO_HSS1_DCD_N) : gpio_irq(GPIO_HSS0_DCD_N),
+ pdev);
+ set_carrier_cb_tab[!!port] = NULL; /* catch bugs */
+
+ set_control(port ? CONTROL_HSS1_DTR_N : CONTROL_HSS0_DTR_N, 1);
+ output_control();
+ gpio_line_set(port ? GPIO_HSS1_RTS_N : GPIO_HSS0_RTS_N, 1);
+}
+
+
+/* Flash memory */
+static struct flash_platform_data flash_data = {
+ .map_name = "cfi_probe",
+ .width = 2,
+};
+
+static struct resource flash_resource = {
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device device_flash = {
+ .name = "IXP4XX-Flash",
+ .id = 0,
+ .dev = { .platform_data = &flash_data },
+ .num_resources = 1,
+ .resource = &flash_resource,
+};
+
+
+/* I^2C interface */
+static struct i2c_gpio_platform_data i2c_data = {
+ .sda_pin = GPIO_SDA,
+ .scl_pin = GPIO_SCL,
+};
+
+static struct platform_device device_i2c = {
+ .name = "i2c-gpio",
+ .id = 0,
+ .dev = { .platform_data = &i2c_data },
+};
+
+
+/* IXP425 2 UART ports */
+static struct resource uart_resources[] = {
+ {
+ .start = IXP4XX_UART1_BASE_PHYS,
+ .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IXP4XX_UART2_BASE_PHYS,
+ .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
+ .flags = IORESOURCE_MEM,
+ }
+};
+
+static struct plat_serial8250_port uart_data[] = {
+ {
+ .mapbase = IXP4XX_UART1_BASE_PHYS,
+ .membase = (char __iomem *)IXP4XX_UART1_BASE_VIRT +
+ REG_OFFSET,
+ .irq = IRQ_IXP4XX_UART1,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ .iotype = UPIO_MEM,
+ .regshift = 2,
+ .uartclk = IXP4XX_UART_XTAL,
+ },
+ {
+ .mapbase = IXP4XX_UART2_BASE_PHYS,
+ .membase = (char __iomem *)IXP4XX_UART2_BASE_VIRT +
+ REG_OFFSET,
+ .irq = IRQ_IXP4XX_UART2,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ .iotype = UPIO_MEM,
+ .regshift = 2,
+ .uartclk = IXP4XX_UART_XTAL,
+ },
+ { },
+};
+
+static struct platform_device device_uarts = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev.platform_data = uart_data,
+ .num_resources = 2,
+ .resource = uart_resources,
+};
+
+
+/* Built-in 10/100 Ethernet MAC interfaces */
+static struct eth_plat_info eth_plat[] = {
+ {
+ .phy = 0,
+ .rxq = 3,
+ .txreadyq = 32,
+ }, {
+ .phy = 1,
+ .rxq = 4,
+ .txreadyq = 33,
+ }
+};
+
+static struct platform_device device_eth_tab[] = {
+ {
+ .name = "ixp4xx_eth",
+ .id = IXP4XX_ETH_NPEB,
+ .dev.platform_data = eth_plat,
+ }, {
+ .name = "ixp4xx_eth",
+ .id = IXP4XX_ETH_NPEC,
+ .dev.platform_data = eth_plat + 1,
+ }
+};
+
+
+/* IXP425 2 synchronous serial ports */
+static struct hss_plat_info hss_plat[] = {
+ {
+ .set_clock = hss_set_clock,
+ .open = hss_open,
+ .close = hss_close,
+ .txreadyq = 34,
+ }, {
+ .set_clock = hss_set_clock,
+ .open = hss_open,
+ .close = hss_close,
+ .txreadyq = 35,
+ }
+};
+
+static struct platform_device device_hss_tab[] = {
+ {
+ .name = "ixp4xx_hss",
+ .id = 0,
+ .dev.platform_data = hss_plat,
+ }, {
+ .name = "ixp4xx_hss",
+ .id = 1,
+ .dev.platform_data = hss_plat + 1,
+ }
+};
+
+
+static struct platform_device *device_tab[6] __initdata = {
+ &device_flash, /* index 0 */
+};
+
+static inline u8 __init flash_readb(u8 __iomem *flash, u32 addr)
+{
+#ifdef __ARMEB__
+ return __raw_readb(flash + addr);
+#else
+ return __raw_readb(flash + (addr ^ 3));
+#endif
+}
+
+static inline u16 __init flash_readw(u8 __iomem *flash, u32 addr)
+{
+#ifdef __ARMEB__
+ return __raw_readw(flash + addr);
+#else
+ return __raw_readw(flash + (addr ^ 2));
+#endif
+}
+
+static void __init gmlr_init(void)
+{
+ u8 __iomem *flash;
+ int i, devices = 1; /* flash */
+
+ ixp4xx_sys_init();
+
+ if ((flash = ioremap(IXP4XX_EXP_BUS_BASE_PHYS, 0x80)) == NULL)
+ printk(KERN_ERR "goramo-mlr: unable to access system"
+ " configuration data\n");
+ else {
+ system_rev = __raw_readl(flash + CFG_REV);
+ hw_bits = __raw_readl(flash + CFG_HW_BITS);
+
+ for (i = 0; i < ETH_ALEN; i++) {
+ eth_plat[0].hwaddr[i] =
+ flash_readb(flash, CFG_ETH0_ADDRESS + i);
+ eth_plat[1].hwaddr[i] =
+ flash_readb(flash, CFG_ETH1_ADDRESS + i);
+ }
+
+ __raw_writew(FLASH_CMD_READ_ID, flash);
+ system_serial_high = flash_readw(flash, FLASH_SER_OFF);
+ system_serial_high <<= 16;
+ system_serial_high |= flash_readw(flash, FLASH_SER_OFF + 2);
+ system_serial_low = flash_readw(flash, FLASH_SER_OFF + 4);
+ system_serial_low <<= 16;
+ system_serial_low |= flash_readw(flash, FLASH_SER_OFF + 6);
+ __raw_writew(FLASH_CMD_READ_ARRAY, flash);
+
+ iounmap(flash);
+ }
+
+ switch (hw_bits & (CFG_HW_HAS_UART0 | CFG_HW_HAS_UART1)) {
+ case CFG_HW_HAS_UART0:
+ memset(&uart_data[1], 0, sizeof(uart_data[1]));
+ device_uarts.num_resources = 1;
+ break;
+
+ case CFG_HW_HAS_UART1:
+ device_uarts.dev.platform_data = &uart_data[1];
+ device_uarts.resource = &uart_resources[1];
+ device_uarts.num_resources = 1;
+ break;
+ }
+ if (hw_bits & (CFG_HW_HAS_UART0 | CFG_HW_HAS_UART1))
+ device_tab[devices++] = &device_uarts; /* max index 1 */
+
+ if (hw_bits & CFG_HW_HAS_ETH0)
+ device_tab[devices++] = &device_eth_tab[0]; /* max index 2 */
+ if (hw_bits & CFG_HW_HAS_ETH1)
+ device_tab[devices++] = &device_eth_tab[1]; /* max index 3 */
+
+ if (hw_bits & CFG_HW_HAS_HSS0)
+ device_tab[devices++] = &device_hss_tab[0]; /* max index 4 */
+ if (hw_bits & CFG_HW_HAS_HSS1)
+ device_tab[devices++] = &device_hss_tab[1]; /* max index 5 */
+
+ if (hw_bits & CFG_HW_HAS_EEPROM)
+ device_tab[devices++] = &device_i2c; /* max index 6 */
+
+ gpio_line_config(GPIO_SCL, IXP4XX_GPIO_OUT);
+ gpio_line_config(GPIO_SDA, IXP4XX_GPIO_OUT);
+ gpio_line_config(GPIO_STR, IXP4XX_GPIO_OUT);
+ gpio_line_config(GPIO_HSS0_RTS_N, IXP4XX_GPIO_OUT);
+ gpio_line_config(GPIO_HSS1_RTS_N, IXP4XX_GPIO_OUT);
+ gpio_line_config(GPIO_HSS0_DCD_N, IXP4XX_GPIO_IN);
+ gpio_line_config(GPIO_HSS1_DCD_N, IXP4XX_GPIO_IN);
+ set_irq_type(gpio_irq(GPIO_HSS0_DCD_N), IRQ_TYPE_EDGE_BOTH);
+ set_irq_type(gpio_irq(GPIO_HSS1_DCD_N), IRQ_TYPE_EDGE_BOTH);
+
+ set_control(CONTROL_HSS0_DTR_N, 1);
+ set_control(CONTROL_HSS1_DTR_N, 1);
+ set_control(CONTROL_EEPROM_WC_N, 1);
+ set_control(CONTROL_PCI_RESET_N, 1);
+ output_control();
+
+ msleep(1); /* Wait for PCI devices to initialize */
+
+ flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+ flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
+
+ platform_add_devices(device_tab, devices);
+}
+
+
+#ifdef CONFIG_PCI
+static void __init gmlr_pci_preinit(void)
+{
+ set_irq_type(IRQ_ETHA, IRQ_TYPE_LEVEL_LOW);
+ set_irq_type(IRQ_ETHB, IRQ_TYPE_LEVEL_LOW);
+ set_irq_type(IRQ_NEC, IRQ_TYPE_LEVEL_LOW);
+ set_irq_type(IRQ_MPCI, IRQ_TYPE_LEVEL_LOW);
+ ixp4xx_pci_preinit();
+}
+
+static void __init gmlr_pci_postinit(void)
+{
+ if ((hw_bits & CFG_HW_USB_PORTS) >= 2 &&
+ (hw_bits & CFG_HW_USB_PORTS) < 5) {
+ /* need to adjust number of USB ports on NEC chip */
+ u32 value, addr = BIT(32 - SLOT_NEC) | 0xE0;
+ if (!ixp4xx_pci_read(addr, NP_CMD_CONFIGREAD, &value)) {
+ value &= ~7;
+ value |= (hw_bits & CFG_HW_USB_PORTS);
+ ixp4xx_pci_write(addr, NP_CMD_CONFIGWRITE, value);
+ }
+ }
+}
+
+static int __init gmlr_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ switch(slot) {
+ case SLOT_ETHA: return IRQ_ETHA;
+ case SLOT_ETHB: return IRQ_ETHB;
+ case SLOT_NEC: return IRQ_NEC;
+ default: return IRQ_MPCI;
+ }
+}
+
+static struct hw_pci gmlr_hw_pci __initdata = {
+ .nr_controllers = 1,
+ .preinit = gmlr_pci_preinit,
+ .postinit = gmlr_pci_postinit,
+ .swizzle = pci_std_swizzle,
+ .setup = ixp4xx_setup,
+ .scan = ixp4xx_scan_bus,
+ .map_irq = gmlr_map_irq,
+};
+
+static int __init gmlr_pci_init(void)
+{
+ if (machine_is_goramo_mlr() &&
+ (hw_bits & (CFG_HW_USB_PORTS | CFG_HW_HAS_PCI_SLOT)))
+ pci_common_init(&gmlr_hw_pci);
+ return 0;
+}
+
+subsys_initcall(gmlr_pci_init);
+#endif /* CONFIG_PCI */
+
+
+MACHINE_START(GORAMO_MLR, "MultiLink")
+ /* Maintainer: Krzysztof Halasa */
+ .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
+ .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
+ .map_io = ixp4xx_map_io,
+ .init_irq = ixp4xx_init_irq,
+ .timer = &ixp4xx_timer,
+ .boot_params = 0x0100,
+ .init_machine = gmlr_init,
+MACHINE_END
diff --git a/arch/arm/mach-ixp4xx/include/mach/cpu.h b/arch/arm/mach-ixp4xx/include/mach/cpu.h
index def7773be67c..b2ef65db0e91 100644
--- a/arch/arm/mach-ixp4xx/include/mach/cpu.h
+++ b/arch/arm/mach-ixp4xx/include/mach/cpu.h
@@ -26,6 +26,8 @@
#define IXP46X_PROCESSOR_ID_VALUE 0x69054200 /* including IXP455 */
#define IXP46X_PROCESSOR_ID_MASK 0xfffffff0
+#define cpu_is_ixp42x_rev_a0() ((read_cpuid_id() & (IXP42X_PROCESSOR_ID_MASK | 0xF)) == \
+ IXP42X_PROCESSOR_ID_VALUE)
#define cpu_is_ixp42x() ((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \
IXP42X_PROCESSOR_ID_VALUE)
#define cpu_is_ixp43x() ((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \
@@ -35,8 +37,11 @@
static inline u32 ixp4xx_read_feature_bits(void)
{
- unsigned int val = ~*IXP4XX_EXP_CFG2;
+ u32 val = ~*IXP4XX_EXP_CFG2;
+ if (cpu_is_ixp42x_rev_a0())
+ return IXP42X_FEATURE_MASK & ~(IXP4XX_FEATURE_RCOMP |
+ IXP4XX_FEATURE_AES);
if (cpu_is_ixp42x())
return val & IXP42X_FEATURE_MASK;
if (cpu_is_ixp43x())
diff --git a/arch/arm/mach-ixp4xx/include/mach/qmgr.h b/arch/arm/mach-ixp4xx/include/mach/qmgr.h
index 0cbe6ceb67c5..9e7cad2d54cb 100644
--- a/arch/arm/mach-ixp4xx/include/mach/qmgr.h
+++ b/arch/arm/mach-ixp4xx/include/mach/qmgr.h
@@ -15,7 +15,7 @@
#define DEBUG_QMGR 0
#define HALF_QUEUES 32
-#define QUEUES 64 /* only 32 lower queues currently supported */
+#define QUEUES 64
#define MAX_QUEUE_LENGTH 4 /* in dwords */
#define QUEUE_STAT1_EMPTY 1 /* queue status bits */
@@ -110,48 +110,95 @@ static inline u32 qmgr_get_entry(unsigned int queue)
return val;
}
-static inline int qmgr_get_stat1(unsigned int queue)
+static inline int __qmgr_get_stat1(unsigned int queue)
{
extern struct qmgr_regs __iomem *qmgr_regs;
return (__raw_readl(&qmgr_regs->stat1[queue >> 3])
>> ((queue & 7) << 2)) & 0xF;
}
-static inline int qmgr_get_stat2(unsigned int queue)
+static inline int __qmgr_get_stat2(unsigned int queue)
{
extern struct qmgr_regs __iomem *qmgr_regs;
+ BUG_ON(queue >= HALF_QUEUES);
return (__raw_readl(&qmgr_regs->stat2[queue >> 4])
>> ((queue & 0xF) << 1)) & 0x3;
}
+/**
+ * qmgr_stat_empty() - checks if a hardware queue is empty
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is empty.
+ */
static inline int qmgr_stat_empty(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_EMPTY);
+ BUG_ON(queue >= HALF_QUEUES);
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_EMPTY;
}
-static inline int qmgr_stat_nearly_empty(unsigned int queue)
+/**
+ * qmgr_stat_below_low_watermark() - checks if a queue is below low watermark
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is below low watermark.
+ */
+static inline int qmgr_stat_below_low_watermark(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_EMPTY);
+ extern struct qmgr_regs __iomem *qmgr_regs;
+ if (queue >= HALF_QUEUES)
+ return (__raw_readl(&qmgr_regs->statne_h) >>
+ (queue - HALF_QUEUES)) & 0x01;
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_EMPTY;
}
-static inline int qmgr_stat_nearly_full(unsigned int queue)
+/**
+ * qmgr_stat_above_high_watermark() - checks if a queue is above high watermark
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is above high watermark
+ */
+static inline int qmgr_stat_above_high_watermark(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_FULL);
+ BUG_ON(queue >= HALF_QUEUES);
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_FULL;
}
+/**
+ * qmgr_stat_full() - checks if a hardware queue is full
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is full.
+ */
static inline int qmgr_stat_full(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_FULL);
+ extern struct qmgr_regs __iomem *qmgr_regs;
+ if (queue >= HALF_QUEUES)
+ return (__raw_readl(&qmgr_regs->statf_h) >>
+ (queue - HALF_QUEUES)) & 0x01;
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_FULL;
}
+/**
+ * qmgr_stat_underflow() - checks if a hardware queue experienced underflow
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue experienced underflow.
+ */
static inline int qmgr_stat_underflow(unsigned int queue)
{
- return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_UNDERFLOW);
+ return __qmgr_get_stat2(queue) & QUEUE_STAT2_UNDERFLOW;
}
+/**
+ * qmgr_stat_overflow() - checks if a hardware queue experienced overflow
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue experienced overflow.
+ */
static inline int qmgr_stat_overflow(unsigned int queue)
{
- return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_OVERFLOW);
+ return __qmgr_get_stat2(queue) & QUEUE_STAT2_OVERFLOW;
}
#endif
diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
index 7bb8e778e4b6..47ac69c7ec78 100644
--- a/arch/arm/mach-ixp4xx/ixp4xx_npe.c
+++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
@@ -386,15 +386,6 @@ static int npe_reset(struct npe *npe)
/* reset the NPE */
ixp4xx_write_feature_bits(val &
~(IXP4XX_FEATURE_RESET_NPEA << npe->id));
- for (i = 0; i < MAX_RETRIES; i++) {
- if (!(ixp4xx_read_feature_bits() &
- (IXP4XX_FEATURE_RESET_NPEA << npe->id)))
- break; /* reset completed */
- udelay(1);
- }
- if (i == MAX_RETRIES)
- return -ETIMEDOUT;
-
/* deassert reset */
ixp4xx_write_feature_bits(val |
(IXP4XX_FEATURE_RESET_NPEA << npe->id));
diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
index bfddc73d0a20..bfdbe4b5a3cc 100644
--- a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
+++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
@@ -18,8 +18,8 @@ struct qmgr_regs __iomem *qmgr_regs;
static struct resource *mem_res;
static spinlock_t qmgr_lock;
static u32 used_sram_bitmap[4]; /* 128 16-dword pages */
-static void (*irq_handlers[HALF_QUEUES])(void *pdev);
-static void *irq_pdevs[HALF_QUEUES];
+static void (*irq_handlers[QUEUES])(void *pdev);
+static void *irq_pdevs[QUEUES];
#if DEBUG_QMGR
char qmgr_queue_descs[QUEUES][32];
@@ -28,51 +28,112 @@ char qmgr_queue_descs[QUEUES][32];
void qmgr_set_irq(unsigned int queue, int src,
void (*handler)(void *pdev), void *pdev)
{
- u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */
- int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */
unsigned long flags;
- src &= 7;
spin_lock_irqsave(&qmgr_lock, flags);
- __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg);
+ if (queue < HALF_QUEUES) {
+ u32 __iomem *reg;
+ int bit;
+ BUG_ON(src > QUEUE_IRQ_SRC_NOT_FULL);
+ reg = &qmgr_regs->irqsrc[queue >> 3]; /* 8 queues per u32 */
+ bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */
+ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit),
+ reg);
+ } else
+ /* IRQ source for queues 32-63 is fixed */
+ BUG_ON(src != QUEUE_IRQ_SRC_NOT_NEARLY_EMPTY);
+
irq_handlers[queue] = handler;
irq_pdevs[queue] = pdev;
spin_unlock_irqrestore(&qmgr_lock, flags);
}
-static irqreturn_t qmgr_irq1(int irq, void *pdev)
+static irqreturn_t qmgr_irq1_a0(int irq, void *pdev)
{
- int i;
- u32 val = __raw_readl(&qmgr_regs->irqstat[0]);
- __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */
-
- for (i = 0; i < HALF_QUEUES; i++)
- if (val & (1 << i))
+ int i, ret = 0;
+ u32 en_bitmap, src, stat;
+
+ /* ACK - it may clear any bits so don't rely on it */
+ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[0]);
+
+ en_bitmap = qmgr_regs->irqen[0];
+ while (en_bitmap) {
+ i = __fls(en_bitmap); /* number of the last "low" queue */
+ en_bitmap &= ~BIT(i);
+ src = qmgr_regs->irqsrc[i >> 3];
+ stat = qmgr_regs->stat1[i >> 3];
+ if (src & 4) /* the IRQ condition is inverted */
+ stat = ~stat;
+ if (stat & BIT(src & 3)) {
irq_handlers[i](irq_pdevs[i]);
+ ret = IRQ_HANDLED;
+ }
+ }
+ return ret;
+}
+
+
+static irqreturn_t qmgr_irq2_a0(int irq, void *pdev)
+{
+ int i, ret = 0;
+ u32 req_bitmap;
+
+ /* ACK - it may clear any bits so don't rely on it */
+ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[1]);
+
+ req_bitmap = qmgr_regs->irqen[1] & qmgr_regs->statne_h;
+ while (req_bitmap) {
+ i = __fls(req_bitmap); /* number of the last "high" queue */
+ req_bitmap &= ~BIT(i);
+ irq_handlers[HALF_QUEUES + i](irq_pdevs[HALF_QUEUES + i]);
+ ret = IRQ_HANDLED;
+ }
+ return ret;
+}
- return val ? IRQ_HANDLED : 0;
+
+static irqreturn_t qmgr_irq(int irq, void *pdev)
+{
+ int i, half = (irq == IRQ_IXP4XX_QM1 ? 0 : 1);
+ u32 req_bitmap = __raw_readl(&qmgr_regs->irqstat[half]);
+
+ if (!req_bitmap)
+ return 0;
+ __raw_writel(req_bitmap, &qmgr_regs->irqstat[half]); /* ACK */
+
+ while (req_bitmap) {
+ i = __fls(req_bitmap); /* number of the last queue */
+ req_bitmap &= ~BIT(i);
+ i += half * HALF_QUEUES;
+ irq_handlers[i](irq_pdevs[i]);
+ }
+ return IRQ_HANDLED;
}
void qmgr_enable_irq(unsigned int queue)
{
unsigned long flags;
+ int half = queue / 32;
+ u32 mask = 1 << (queue & (HALF_QUEUES - 1));
spin_lock_irqsave(&qmgr_lock, flags);
- __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue),
- &qmgr_regs->irqen[0]);
+ __raw_writel(__raw_readl(&qmgr_regs->irqen[half]) | mask,
+ &qmgr_regs->irqen[half]);
spin_unlock_irqrestore(&qmgr_lock, flags);
}
void qmgr_disable_irq(unsigned int queue)
{
unsigned long flags;
+ int half = queue / 32;
+ u32 mask = 1 << (queue & (HALF_QUEUES - 1));
spin_lock_irqsave(&qmgr_lock, flags);
- __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue),
- &qmgr_regs->irqen[0]);
- __raw_writel(1 << queue, &qmgr_regs->irqstat[0]); /* clear */
+ __raw_writel(__raw_readl(&qmgr_regs->irqen[half]) & ~mask,
+ &qmgr_regs->irqen[half]);
+ __raw_writel(mask, &qmgr_regs->irqstat[half]); /* clear */
spin_unlock_irqrestore(&qmgr_lock, flags);
}
@@ -98,8 +159,7 @@ int __qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
u32 cfg, addr = 0, mask[4]; /* in 16-dwords */
int err;
- if (queue >= HALF_QUEUES)
- return -ERANGE;
+ BUG_ON(queue >= QUEUES);
if ((nearly_empty_watermark | nearly_full_watermark) & ~7)
return -EINVAL;
@@ -180,7 +240,7 @@ void qmgr_release_queue(unsigned int queue)
{
u32 cfg, addr, mask[4];
- BUG_ON(queue >= HALF_QUEUES); /* not in valid range */
+ BUG_ON(queue >= QUEUES); /* not in valid range */
spin_lock_irq(&qmgr_lock);
cfg = __raw_readl(&qmgr_regs->sram[queue]);
@@ -224,6 +284,8 @@ void qmgr_release_queue(unsigned int queue)
static int qmgr_init(void)
{
int i, err;
+ irq_handler_t handler1, handler2;
+
mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS,
IXP4XX_QMGR_REGION_SIZE,
"IXP4xx Queue Manager");
@@ -247,23 +309,42 @@ static int qmgr_init(void)
__raw_writel(0, &qmgr_regs->irqen[i]);
}
+ __raw_writel(0xFFFFFFFF, &qmgr_regs->statne_h);
+ __raw_writel(0, &qmgr_regs->statf_h);
+
for (i = 0; i < QUEUES; i++)
__raw_writel(0, &qmgr_regs->sram[i]);
- err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0,
- "IXP4xx Queue Manager", NULL);
+ if (cpu_is_ixp42x_rev_a0()) {
+ handler1 = qmgr_irq1_a0;
+ handler2 = qmgr_irq2_a0;
+ } else
+ handler1 = handler2 = qmgr_irq;
+
+ err = request_irq(IRQ_IXP4XX_QM1, handler1, 0, "IXP4xx Queue Manager",
+ NULL);
if (err) {
- printk(KERN_ERR "qmgr: failed to request IRQ%i\n",
- IRQ_IXP4XX_QM1);
+ printk(KERN_ERR "qmgr: failed to request IRQ%i (%i)\n",
+ IRQ_IXP4XX_QM1, err);
goto error_irq;
}
+ err = request_irq(IRQ_IXP4XX_QM2, handler2, 0, "IXP4xx Queue Manager",
+ NULL);
+ if (err) {
+ printk(KERN_ERR "qmgr: failed to request IRQ%i (%i)\n",
+ IRQ_IXP4XX_QM2, err);
+ goto error_irq2;
+ }
+
used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */
spin_lock_init(&qmgr_lock);
printk(KERN_INFO "IXP4xx Queue Manager initialized.\n");
return 0;
+error_irq2:
+ free_irq(IRQ_IXP4XX_QM1, NULL);
error_irq:
iounmap(qmgr_regs);
error_map:
@@ -274,7 +355,9 @@ error_map:
static void qmgr_remove(void)
{
free_irq(IRQ_IXP4XX_QM1, NULL);
+ free_irq(IRQ_IXP4XX_QM2, NULL);
synchronize_irq(IRQ_IXP4XX_QM1);
+ synchronize_irq(IRQ_IXP4XX_QM2);
iounmap(qmgr_regs);
release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 00:56:16 +0000