waterDataDiscreteRateMining averageMemoryDefinition.c 邵敏 commit at 2021-04-06

waterDataDiscreteRateMining/dataSharedMemory/averageMemoryDefinition.c

@@ -494,3 +494,185 @@ static struct irq_chip balloon3_irq_chip = {
 	.name		= "FPGA",
 	.irq_ack	= balloon3_mask_irq,
 	.irq_mask	= balloon3_mask_irq,
+	.irq_unmask	= balloon3_unmask_irq,
+};
+
+static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
+{
+	unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
+					balloon3_irq_enabled;
+	do {
+		/* clear useless edge notification */
+		if (desc->irq_data.chip->irq_ack) {
+			struct irq_data *d;
+
+			d = irq_get_irq_data(BALLOON3_AUX_NIRQ);
+			desc->irq_data.chip->irq_ack(d);
+		}
+
+		while (pending) {
+			irq = BALLOON3_IRQ(0) + __ffs(pending);
+			generic_handle_irq(irq);
+			pending &= pending - 1;
+		}
+		pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
+				balloon3_irq_enabled;
+	} while (pending);
+}
+
+static void __init balloon3_init_irq(void)
+{
+	int irq;
+
+	pxa27x_init_irq();
+	/* setup extra Balloon3 irqs */
+	for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
+		irq_set_chip_and_handler(irq, &balloon3_irq_chip,
+					 handle_level_irq);
+		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+	}
+
+	irq_set_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
+	irq_set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
+
+	pr_debug("%s: chained handler installed - irq %d automatically "
+		"enabled\n", __func__, BALLOON3_AUX_NIRQ);
+}
+
+/******************************************************************************
+ * GPIO expander
+ ******************************************************************************/
+#if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
+static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
+	.gpio_base	= BALLOON3_PCF_GPIO_BASE,
+	.n_latch	= 0,
+	.setup		= NULL,
+	.teardown	= NULL,
+	.context	= NULL,
+};
+
+static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
+	{
+		I2C_BOARD_INFO("pcf8574a", 0x38),
+		.platform_data	= &balloon3_pcf857x_pdata,
+	},
+};
+
+static void __init balloon3_i2c_init(void)
+{
+	pxa_set_i2c_info(NULL);
+	i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
+}
+#else
+static inline void balloon3_i2c_init(void) {}
+#endif
+
+/******************************************************************************
+ * NAND
+ ******************************************************************************/
+#if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
+static void balloon3_nand_cmd_ctl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+	uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		if (ctrl & NAND_CLE)
+			balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
+		else
+			balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;
+
+		if (ctrl & NAND_ALE)
+			balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
+		else
+			balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;
+
+		if (balloon3_ctl_clr)
+			__raw_writel(balloon3_ctl_clr,
+				BALLOON3_NAND_CONTROL_REG);
+		if (balloon3_ctl_set)
+			__raw_writel(balloon3_ctl_set,
+				BALLOON3_NAND_CONTROL_REG +
+				BALLOON3_FPGA_SETnCLR);
+	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, this->IO_ADDR_W);
+}
+
+static void balloon3_nand_select_chip(struct mtd_info *mtd, int chip)
+{
+	if (chip < 0 || chip > 3)
+		return;
+
+	/* Assert all nCE lines */
+	__raw_writew(
+		BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
+		BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
+		BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
+
+	/* Deassert correct nCE line */
+	__raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
+		BALLOON3_NAND_CONTROL_REG);
+}
+
+static int balloon3_nand_dev_ready(struct mtd_info *mtd)
+{
+	return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
+}
+
+static int balloon3_nand_probe(struct platform_device *pdev)
+{
+	uint16_t ver;
+	int ret;
+
+	__raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
+		BALLOON3_NAND_CONTROL2_REG + BALLOON3_FPGA_SETnCLR);
+
+	ver = __raw_readw(BALLOON3_FPGA_VER);
+	if (ver < 0x4f08)
+		pr_warn("The FPGA code, version 0x%04x, is too old. "
+			"NAND support might be broken in this version!", ver);
+
+	/* Power up the NAND chips */
+	ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
+	if (ret)
+		goto err1;
+
+	ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
+	if (ret)
+		goto err2;
+
+	gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
+
+	/* Deassert all nCE lines and write protect line */
+	__raw_writel(
+		BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
+		BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
+		BALLOON3_NAND_CONTROL_FLWP,
+		BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
+	return 0;
+
+err2:
+	gpio_free(BALLOON3_GPIO_RUN_NAND);
+err1:
+	return ret;
+}
+
+static void balloon3_nand_remove(struct platform_device *pdev)
+{
+	/* Power down the NAND chips */
+	gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
+	gpio_free(BALLOON3_GPIO_RUN_NAND);
+}
+
+static struct mtd_partition balloon3_partition_info[] = {
+	[0] = {
+		.name	= "Boot",
+		.offset	= 0,
+		.size	= SZ_4M,
+	},
+	[1] = {
+		.name	= "RootFS",
+		.offset	= MTDPART_OFS_APPEND,
+		.size	= MTDPART_SIZ_FULL