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Commit 949feacb authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'nios2-v4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2 

Pull nios2 updates from Ley Foon Tan:

 - add defconfig and device tree for max 10 support
 - migrate to new 'set-state' interface for timer
 - fix unaligned handler
 - MAINTAINERS: update nios2 git repo

* tag 'nios2-v4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: add Max10 defconfig
  nios2: Add Max10 device tree
  MAINTAINERS: update nios2 git repo
  nios2: remove unused statistic counters
  nios2: fixed variable imm16 to s16
  nios2/time: Migrate to new 'set-state' interface
parents 384989b5 08441d46

MAINTAINERS

+1 −1
Original line number Diff line number Diff line
@@ -7377,7 +7377,7 @@ F: drivers/scsi/nsp32* 
NIOS2 ARCHITECTURE

M:	Ley Foon Tan <lftan@altera.com>

L:	nios2-dev@lists.rocketboards.org (moderated for non-subscribers)

T:	git git://git.rocketboards.org/linux-socfpga-next.git

T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2.git

S:	Maintained

F:	arch/nios2/

arch/nios2/boot/dts/10m50_devboard.dts

0 → 100755
+248 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2015 Altera Corporation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program.  If not, see <http://www.gnu.org/licenses/>.

 */



/dts-v1/;



/ {

	model = "Altera NiosII Max10";

	compatible = "altr,niosii-max10";

	#address-cells = <1>;

	#size-cells = <1>;



	cpus {

		#address-cells = <1>;

		#size-cells = <0>;



		cpu: cpu@0 {

			device_type = "cpu";

			compatible = "altr,nios2-1.1";

			reg = <0x00000000>;

			interrupt-controller;

			#interrupt-cells = <1>;

			altr,exception-addr = <0xc8000120>;

			altr,fast-tlb-miss-addr = <0xc0000100>;

			altr,has-div = <1>;

			altr,has-initda = <1>;

			altr,has-mmu = <1>;

			altr,has-mul = <1>;

			altr,implementation = "fast";

			altr,pid-num-bits = <8>;

			altr,reset-addr = <0xd4000000>;

			altr,tlb-num-entries = <256>;

			altr,tlb-num-ways = <16>;

			altr,tlb-ptr-sz = <8>;

			clock-frequency = <75000000>;

			dcache-line-size = <32>;

			dcache-size = <32768>;

			icache-line-size = <32>;

			icache-size = <32768>;

		};

	};



	memory {

		device_type = "memory";

		reg = <0x08000000 0x08000000>,

			<0x00000000 0x00000400>;

	};



	sopc0: sopc@0 {

		device_type = "soc";

		ranges;

		#address-cells = <1>;

		#size-cells = <1>;

		compatible = "altr,avalon", "simple-bus";

		bus-frequency = <75000000>;



		jtag_uart: serial@18001530 {

			compatible = "altr,juart-1.0";

			reg = <0x18001530 0x00000008>;

			interrupt-parent = <&cpu>;

			interrupts = <7>;

		};



		a_16550_uart_0: serial@18001600 {

			compatible = "altr,16550-FIFO32", "ns16550a";

			reg = <0x18001600 0x00000200>;

			interrupt-parent = <&cpu>;

			interrupts = <1>;

			auto-flow-control = <1>;

			clock-frequency = <50000000>;

			fifo-size = <32>;

			reg-io-width = <4>;

			reg-shift = <2>;

		};



		sysid: sysid@18001528 {

			compatible = "altr,sysid-1.0";

			reg = <0x18001528 0x00000008>;

			id = <4207856382>;

			timestamp = <1431309290>;

		};



		rgmii_0_eth_tse_0: ethernet@400 {

			compatible = "altr,tse-msgdma-1.0", "altr,tse-1.0";

			reg = <0x00000400 0x00000400>,

				<0x00000820 0x00000020>,

				<0x00000800 0x00000020>,

				<0x000008c0 0x00000008>,

				<0x00000840 0x00000020>,

				<0x00000860 0x00000020>;

			reg-names = "control_port", "rx_csr", "rx_desc", "rx_resp", "tx_csr", "tx_desc";

			interrupt-parent = <&cpu>;

			interrupts = <2 3>;

			interrupt-names = "rx_irq", "tx_irq";

			rx-fifo-depth = <8192>;

			tx-fifo-depth = <8192>;

			address-bits = <48>;

			max-frame-size = <1518>;

			local-mac-address = [00 00 00 00 00 00];

			altr,has-supplementary-unicast;

			altr,enable-sup-addr = <1>;

			altr,has-hash-multicast-filter;

			altr,enable-hash = <1>;

			phy-mode = "rgmii-id";

			phy-handle = <&phy0>;

			rgmii_0_eth_tse_0_mdio: mdio {

				compatible = "altr,tse-mdio";

				#address-cells = <1>;

				#size-cells = <0>;

				phy0: ethernet-phy@0 {

					reg = <0>;

					device_type = "ethernet-phy";

				};

			};

		};



		enet_pll: clock@0 {

			compatible = "altr,pll-1.0";

			#clock-cells = <1>;



			enet_pll_c0: enet_pll_c0 {

				compatible = "fixed-clock";

				#clock-cells = <0>;

				clock-frequency = <125000000>;

				clock-output-names = "enet_pll-c0";

			};



			enet_pll_c1: enet_pll_c1 {

				compatible = "fixed-clock";

				#clock-cells = <0>;

				clock-frequency = <25000000>;

				clock-output-names = "enet_pll-c1";

			};



			enet_pll_c2: enet_pll_c2 {

				compatible = "fixed-clock";

				#clock-cells = <0>;

				clock-frequency = <2500000>;

				clock-output-names = "enet_pll-c2";

			};

		};



		sys_pll: clock@1 {

			compatible = "altr,pll-1.0";

			#clock-cells = <1>;



			sys_pll_c0: sys_pll_c0 {

				compatible = "fixed-clock";

				#clock-cells = <0>;

				clock-frequency = <100000000>;

				clock-output-names = "sys_pll-c0";

			};



			sys_pll_c1: sys_pll_c1 {

				compatible = "fixed-clock";

				#clock-cells = <0>;

				clock-frequency = <50000000>;

				clock-output-names = "sys_pll-c1";

			};



			sys_pll_c2: sys_pll_c2 {

				compatible = "fixed-clock";

				#clock-cells = <0>;

				clock-frequency = <75000000>;

				clock-output-names = "sys_pll-c2";

			};

		};



		sys_clk_timer: timer@18001440 {

			compatible = "altr,timer-1.0";

			reg = <0x18001440 0x00000020>;

			interrupt-parent = <&cpu>;

			interrupts = <0>;

			clock-frequency = <75000000>;

		};



		led_pio: gpio@180014d0 {

			compatible = "altr,pio-1.0";

			reg = <0x180014d0 0x00000010>;

			altr,gpio-bank-width = <4>;

			resetvalue = <15>;

			#gpio-cells = <2>;

			gpio-controller;

		};



		button_pio: gpio@180014c0 {

			compatible = "altr,pio-1.0";

			reg = <0x180014c0 0x00000010>;

			interrupt-parent = <&cpu>;

			interrupts = <6>;

			altr,gpio-bank-width = <3>;

			altr,interrupt-type = <2>;

			edge_type = <1>;

			level_trigger = <0>;

			resetvalue = <0>;

			#gpio-cells = <2>;

			gpio-controller;

		};



		sys_clk_timer_1: timer@880 {

			compatible = "altr,timer-1.0";

			reg = <0x00000880 0x00000020>;

			interrupt-parent = <&cpu>;

			interrupts = <5>;

			clock-frequency = <75000000>;

		};



		fpga_leds: leds {

			compatible = "gpio-leds";



			led_fpga0: fpga0 {

				label = "fpga_led0";

				gpios = <&led_pio 0 1>;

			};



			led_fpga1: fpga1 {

				label = "fpga_led1";

				gpios = <&led_pio 1 1>;

			};



			led_fpga2: fpga2 {

				label = "fpga_led2";

				gpios = <&led_pio 2 1>;

			};



			led_fpga3: fpga3 {

				label = "fpga_led3";

				gpios = <&led_pio 3 1>;

			};

		};

	};



	chosen {

		bootargs = "debug console=ttyS0,115200";

	};

};

arch/nios2/configs/10m50_defconfig

0 → 100755
+81 −0
Original line number Diff line number Diff line 
CONFIG_SYSVIPC=y

CONFIG_NO_HZ_IDLE=y

CONFIG_BSD_PROCESS_ACCT=y

CONFIG_LOG_BUF_SHIFT=14

CONFIG_SYSCTL_SYSCALL=y

# CONFIG_ELF_CORE is not set

# CONFIG_EPOLL is not set

# CONFIG_SIGNALFD is not set

# CONFIG_TIMERFD is not set

# CONFIG_EVENTFD is not set

# CONFIG_SHMEM is not set

# CONFIG_AIO is not set

CONFIG_EMBEDDED=y

CONFIG_SLAB=y

CONFIG_MODULES=y

CONFIG_MODULE_UNLOAD=y

CONFIG_NIOS2_MEM_BASE=0x8000000

CONFIG_NIOS2_HW_MUL_SUPPORT=y

CONFIG_NIOS2_HW_DIV_SUPPORT=y

CONFIG_CUSTOM_CACHE_SETTINGS=y

CONFIG_NIOS2_DCACHE_SIZE=0x8000

CONFIG_NIOS2_ICACHE_SIZE=0x8000

# CONFIG_NIOS2_CMDLINE_IGNORE_DTB is not set

CONFIG_NET=y

CONFIG_PACKET=y

CONFIG_UNIX=y

CONFIG_INET=y

CONFIG_IP_MULTICAST=y

CONFIG_IP_PNP=y

CONFIG_IP_PNP_DHCP=y

CONFIG_IP_PNP_BOOTP=y

CONFIG_IP_PNP_RARP=y

# CONFIG_INET_XFRM_MODE_TRANSPORT is not set

# CONFIG_INET_XFRM_MODE_TUNNEL is not set

# CONFIG_INET_XFRM_MODE_BEET is not set

# CONFIG_INET_LRO is not set

# CONFIG_IPV6 is not set

# CONFIG_WIRELESS is not set

CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"

CONFIG_DEVTMPFS=y

CONFIG_DEVTMPFS_MOUNT=y

# CONFIG_FW_LOADER is not set

CONFIG_MTD=y

CONFIG_MTD_CMDLINE_PARTS=y

CONFIG_MTD_BLOCK=y

CONFIG_MTD_CFI=y

CONFIG_MTD_CFI_INTELEXT=y

CONFIG_MTD_CFI_AMDSTD=y

CONFIG_BLK_DEV_LOOP=y

CONFIG_NETDEVICES=y

CONFIG_ALTERA_TSE=y

CONFIG_MARVELL_PHY=y

# CONFIG_WLAN is not set

# CONFIG_INPUT_MOUSE is not set

# CONFIG_SERIO_SERPORT is not set

# CONFIG_VT is not set

CONFIG_SERIAL_8250=y

# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set

CONFIG_SERIAL_8250_CONSOLE=y

CONFIG_SERIAL_OF_PLATFORM=y

CONFIG_SERIAL_ALTERA_JTAGUART=y

# CONFIG_HW_RANDOM is not set

CONFIG_GPIOLIB=y

CONFIG_GPIO_SYSFS=y

CONFIG_GPIO_ALTERA=y

# CONFIG_HWMON is not set

# CONFIG_USB_SUPPORT is not set

CONFIG_NEW_LEDS=y

CONFIG_LEDS_CLASS=y

CONFIG_LEDS_GPIO=y

CONFIG_LEDS_TRIGGERS=y

CONFIG_LEDS_TRIGGER_HEARTBEAT=y

# CONFIG_DNOTIFY is not set

# CONFIG_INOTIFY_USER is not set

CONFIG_JFFS2_FS=y

CONFIG_NFS_FS=y

CONFIG_NFS_V3_ACL=y

CONFIG_ROOT_NFS=y

CONFIG_SUNRPC_DEBUG=y

CONFIG_DEBUG_INFO=y

# CONFIG_ENABLE_WARN_DEPRECATED is not set

arch/nios2/kernel/misaligned.c

+1 −19
Original line number Diff line number Diff line
@@ -32,8 +32,6 @@ 
#define INST_STW	0x15

#define INST_LDW	0x17



static unsigned long ma_user, ma_kern, ma_skipped, ma_half, ma_word;



static unsigned int ma_usermode;

#define UM_WARN		0x01

#define UM_FIXUP	0x02
@@ -53,7 +51,6 @@ static int reg_offsets[32]; 
static inline u32 get_reg_val(struct pt_regs *fp, int reg)

{

	u8 *p = ((u8 *)fp) + reg_offsets[reg];



	return *(u32 *)p;

}
@@ -71,14 +68,13 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) 
	u32 isn, addr, val;

	int in_kernel;

	u8 a, b, d0, d1, d2, d3;

	u16 imm16;

	s16 imm16;

	unsigned int fault;



	/* back up one instruction */

	fp->ea -= 4;



	if (fixup_exception(fp)) {

		ma_skipped++;

		return;

	}
@@ -103,18 +99,11 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) 
			fault |= __get_user(d1, (u8 *)(addr+1));

			val = (d1 << 8) | d0;

			put_reg_val(fp, b, val);

			ma_half++;

			break;

		case INST_STH:

			val = get_reg_val(fp, b);

			d1 = val >> 8;

			d0 = val >> 0;



			pr_debug("sth: ra=%d (%08x) rb=%d (%08x), imm16 %04x addr %08x val %08x\n",

				a, get_reg_val(fp, a),

				b, get_reg_val(fp, b),

				imm16, addr, val);



			if (in_kernel) {

				*(u8 *)(addr+0) = d0;

				*(u8 *)(addr+1) = d1;
@@ -122,14 +111,12 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) 
				fault |= __put_user(d0, (u8 *)(addr+0));

				fault |= __put_user(d1, (u8 *)(addr+1));

			}

			ma_half++;

			break;

		case INST_LDH:

			fault |= __get_user(d0, (u8 *)(addr+0));

			fault |= __get_user(d1, (u8 *)(addr+1));

			val = (short)((d1 << 8) | d0);

			put_reg_val(fp, b, val);

			ma_half++;

			break;

		case INST_STW:

			val = get_reg_val(fp, b);
@@ -148,7 +135,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) 
				fault |= __put_user(d2, (u8 *)(addr+2));

				fault |= __put_user(d3, (u8 *)(addr+3));

			}

			ma_word++;

			break;

		case INST_LDW:

			fault |= __get_user(d0, (u8 *)(addr+0));
@@ -157,7 +143,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) 
			fault |= __get_user(d3, (u8 *)(addr+3));

			val = (d3 << 24) | (d2 << 16) | (d1 << 8) | d0;

			put_reg_val(fp, b, val);

			ma_word++;

			break;

		}

	}
@@ -186,7 +171,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) 
	 *  note exception and skip bad instruction (return)

	 */

	if (in_kernel) {

		ma_kern++;

		fp->ea += 4;



		if (ma_usermode & KM_WARN) {
@@ -200,8 +184,6 @@ asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause) 
		return;

	}



	ma_user++;



	/*

	 * user mode -

	 *  possibly warn,

arch/nios2/kernel/time.c

+29 −20
Original line number Diff line number Diff line
@@ -130,7 +130,7 @@ static void nios2_timer_stop(struct nios2_timer *timer) 
}



static void nios2_timer_config(struct nios2_timer *timer, unsigned long period,

	enum clock_event_mode mode)

			       bool periodic)

{

	u16 ctrl;
@@ -148,7 +148,7 @@ static void nios2_timer_config(struct nios2_timer *timer, unsigned long period, 
	timer_writew(timer, period >> 16, ALTERA_TIMER_PERIODH_REG);



	ctrl |= ALTERA_TIMER_CONTROL_START_MSK | ALTERA_TIMER_CONTROL_ITO_MSK;

	if (mode == CLOCK_EVT_MODE_PERIODIC)

	if (periodic)

		ctrl |= ALTERA_TIMER_CONTROL_CONT_MSK;

	else

		ctrl &= ~ALTERA_TIMER_CONTROL_CONT_MSK;
@@ -160,32 +160,38 @@ static int nios2_timer_set_next_event(unsigned long delta, 
{

	struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt);



	nios2_timer_config(&nios2_ced->timer, delta, evt->mode);

	nios2_timer_config(&nios2_ced->timer, delta, false);



	return 0;

}



static void nios2_timer_set_mode(enum clock_event_mode mode,

	struct clock_event_device *evt)

static int nios2_timer_shutdown(struct clock_event_device *evt)

{

	struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt);

	struct nios2_timer *timer = &nios2_ced->timer;



	nios2_timer_stop(timer);

	return 0;

}



static int nios2_timer_set_periodic(struct clock_event_device *evt)

{

	unsigned long period;

	struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt);

	struct nios2_timer *timer = &nios2_ced->timer;



	switch (mode) {

	case CLOCK_EVT_MODE_PERIODIC:

	period = DIV_ROUND_UP(timer->freq, HZ);

		nios2_timer_config(timer, period, CLOCK_EVT_MODE_PERIODIC);

		break;

	case CLOCK_EVT_MODE_ONESHOT:

	case CLOCK_EVT_MODE_UNUSED:

	case CLOCK_EVT_MODE_SHUTDOWN:

		nios2_timer_stop(timer);

		break;

	case CLOCK_EVT_MODE_RESUME:

		nios2_timer_start(timer);

		break;

	nios2_timer_config(timer, period, true);

	return 0;

}



static int nios2_timer_resume(struct clock_event_device *evt)

{

	struct nios2_clockevent_dev *nios2_ced = to_nios2_clkevent(evt);

	struct nios2_timer *timer = &nios2_ced->timer;



	nios2_timer_start(timer);

	return 0;

}



irqreturn_t timer_interrupt(int irq, void *dev_id)
@@ -218,7 +224,10 @@ static struct nios2_clockevent_dev nios2_ce = { 
		.rating = 250,

		.shift = 32,

		.set_next_event = nios2_timer_set_next_event,

		.set_mode = nios2_timer_set_mode,

		.set_state_shutdown = nios2_timer_shutdown,

		.set_state_periodic = nios2_timer_set_periodic,

		.set_state_oneshot = nios2_timer_shutdown,

		.tick_resume = nios2_timer_resume,

	},

};