From 33aa836b4532a5b6bc25b03dfb67d4b3c7a0b4bb Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sat, 26 Dec 2009 20:46:11 +0000
Subject: [PATCH] Add basic interrupt controls
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2437 42af7a65-404d-4744-a932-0658087f49c3
---
arch/arm/src/lpc313x/Make.defs | 2 +-
arch/arm/src/lpc313x/lpc313x_cgu.h | 205 +++++++++++++++++++++++++--
arch/arm/src/lpc313x/lpc313x_intc.h | 79 ++++++-----
arch/arm/src/lpc313x/lpc313x_irq.c | 207 ++++++++++++++++++++++++++++
4 files changed, 446 insertions(+), 47 deletions(-)
create mode 100755 arch/arm/src/lpc313x/lpc313x_irq.c
diff --git a/arch/arm/src/lpc313x/Make.defs b/arch/arm/src/lpc313x/Make.defs
index 0027443551..7da06d7eed 100755
--- a/arch/arm/src/lpc313x/Make.defs
+++ b/arch/arm/src/lpc313x/Make.defs
@@ -46,4 +46,4 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_undefinedinsn.c up_usestack.c
CHIP_ASRCS =
-CHIP_CSRCS = lpc313x_allocateheap.c
+CHIP_CSRCS = lpc313x_irq.c lpc313x_allocateheap.c
diff --git a/arch/arm/src/lpc313x/lpc313x_cgu.h b/arch/arm/src/lpc313x/lpc313x_cgu.h
index 44652da9f5..f6d46fa09f 100755
--- a/arch/arm/src/lpc313x/lpc313x_cgu.h
+++ b/arch/arm/src/lpc313x/lpc313x_cgu.h
@@ -493,8 +493,8 @@
#define LPC313X_CGU_AHB2INTCRST_OFFSET 0x034 /* Reset AHB_TO_INTC */
#define LPC313X_CGU_AHB0RST_OFFSET 0x038 /* Reset AHB0 */
#define LPC313X_CGU_EBIRST_OFFSET 0x03c /* Reset EBI */
-#define LPC313X_CGU_PCMRST_OFFSET 0x040 /* Reset APB domain of PCM */
-#define LPC313X_CGU_PCMRST_OFFSET 0x044 /* Reset synchronous clk_ip domain of PCM */
+#define LPC313X_CGU_PCMAPBRST_OFFSET 0x040 /* Reset APB domain of PCM */
+#define LPC313X_CGU_PCMCLKIPRST_OFFSET 0x044 /* Reset synchronous clk_ip domain of PCM */
#define LPC313X_CGU_PCMRSTASYNC_OFFSET 0x048 /* Reset asynchronous clk_ip domain of PCM */
#define LPC313X_CGU_TIMER0RST_OFFSET 0x04c /* Reset Timer0 */
#define LPC313X_CGU_TIMER1RST_OFFSET 0x050 /* Reset Timer1 */
@@ -995,8 +995,8 @@
#define LPC313X_CGU_AHB2INTCRST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_AHB2INTCRST_OFFSET)
#define LPC313X_CGU_AHB0RST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_AHB0RST_OFFSET)
#define LPC313X_CGU_EBIRST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_EBIRST_OFFSET)
-#define LPC313X_CGU_PCMRST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_PCMRST_OFFSET)
-#define LPC313X_CGU_PCMRST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_PCMRST_OFFSET)
+#define LPC313X_CGU_PCMAPBRST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_PCMAPBRST_OFFSET)
+#define LPC313X_CGU_PCMCLKIPRST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_PCMCLKIPRST_OFFSET)
#define LPC313X_CGU_PCMRSTASYNC (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_PCMRSTASYNC_OFFSET)
#define LPC313X_CGU_TIMER0RST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_TIMER0RST_OFFSET)
#define LPC313X_CGU_TIMER1RST (LPC313X_CGU_CFG_VBASE+LPC313X_CGU_TIMER1RST_OFFSET)
@@ -1284,11 +1284,11 @@
/* PCM_PNRES_SOFT UNIT register, address 0x13004c40 */
-#define CGU_PCMRST_RESET (1 << 0) /* Bit 0: Reset for APB domain of PCM */
+#define CGU_PCMAPBRST_RESET (1 << 0) /* Bit 0: Reset for APB domain of PCM */
/* PCM_RESET_N_SOFT register, address 0x13004c44 */
-#define CGU_PCMRST_RESET (1 << 0) /* Bit 0: Reset for synchronous clk_ip domain of PCM */
+#define CGU_PCMCLKIPRST_RESET (1 << 0) /* Bit 0: Reset for synchronous clk_ip domain of PCM */
/* PCM_RESET_ASYNC_N_SOFT register, address 0x13004c48 */
@@ -1360,11 +1360,11 @@
/* I2STX_IF_1_RST_N_SOFT register, address 0x13004c8c */
-#define CGU_I2STXIF1RST_RESET (1 << 0) /* Bit 0: Reset for I2STX_IF_1
+#define CGU_I2STXIF1RST_RESET (1 << 0) /* Bit 0: Reset for I2STX_IF_1 */
/* I2SRX_FIFO_0_RST_N_SOFT register, address 0x13004c90 */
-#define CGU_I2SRXFF0RST_RESET (1 << 0) /* Bit 0: Reset for I2SRX_FIFO_0
+#define CGU_I2SRXFF0RST_RESET (1 << 0) /* Bit 0: Reset for I2SRX_FIFO_0 */
/* I2SRX_IF_0_RST_N_SOFT register, address 0x13004c94 */
@@ -1601,16 +1601,205 @@
#define CGU_HP1SELP_SHIFT (0) /* Bits 0-4: Bandwidth selection register of HP1 PLL */
#define CGU_HP1IELP_MASK (31 << CGU_HP1SELP_SHIFT)
+/* Clock ID ranges (see enum lpc313x_clockid_e) *************************************************/
+
+#define CLKID_SYSBASE_FIRST CLKID_APB0CLK /* Domain 0: SYS_BASE */
+#define CLKID_SYSBASE_LAST CLKID_INTCCLK
+#define CLKID_AHB0APB0_FIRST CLKID_AHB2APB0ASYNCPCLK /* Domain 1: AHB0APB0_BASE */
+#define CLKID_AHB0APB0_LAST CLKID_RNGPCLK
+#define CLKID_AHB0APB1_FIRST CLKID_AHB2APB1ASYNCPCLK /* Domain 2: AHB0APB1_BASE */
+#define CLKID_AHB0APB1_LAST CLKID_I2C1PCLK
+#define CLKID_AHB0APB2_FIRST CLKID_AHB2APB2ASYNCPCLK /* Domain 3: AHB0APB2_BASE */
+#define CLKID_AHB0APB2_LAST CLKID_SPIPCLKGATED
+#define CLKID_AHB0APB3_FIRST CLKID_AHB2APB3PCLK /* Domain 4: AHB0APB3_BASE */
+#define CLKID_AHB0APB3_LAST CLKID_RESERVED70
+#define CLKID_PCM_FIRST CLKID_PCMCLKIP /* Domain 5: PCM_BASE */
+#define CLKID_PCM_LAST CLKID_PCMCLKIP
+#define CLKID_UART_FIRST CLKID_UARTUCLK /* Domain 6: UART_BASE */
+#define CLKID_UART_LAST CLKID_UARTUCLK
+#define CLKID_CLK1024FS_FIRST CLKID_I2SEDGEDETECTCLK /* Domain 7: CLK1024FS_BASE */
+#define CLKID_CLK1024FS_LAST CLKID_RESERVED86
+#define CLKID_I2SRXBCK0_FIRST CLKID_I2SRXBCK0 /* Domain 8: BCK0_BASE */
+#define CLKID_I2SRXBCK0_LAST CLKID_I2SRXBCK0
+#define CLKID_I2SRXBCK1_FIRST CLKID_I2SRXBCK1 /* Domain 9: BCK1_BASE */
+#define CLKID_I2SRXBCK1_LAST CLKID_I2SRXBCK1
+#define CLKID_SPI_FIRST CLKID_SPICLK /* Domain 10: SPI_BASE */
+#define CLKID_SPI_LAST CLKID_SPICLKGATED
+#define CLKID_SYSCLKO_FIRST CLKID_SYSCLKO /* Domain 11: SYSCLKO_BASE */
+#define CLKID_SYSCLKO_LAST CLKID_SYSCLKO
+#define CLKID_INVALIDCLK -1
+
/************************************************************************************************
* Public Types
************************************************************************************************/
+#ifndef __ASSEMBLY__
+
+/* Clock IDs -- These are indices corresponding to the register offsets above */
+
+enum lpc313x_clockid_e
+{
+ /* Domain 0: SYS_BASE */
+
+ CLKID_APB0CLK = 0, /* 0 APB0_CLK */
+ CLKID_SBAPB1CLK, /* 1 APB1_CLK */
+ CLKID_APB2CLK, /* 2 APB2_CLK */
+ CLKID_APB3CLK, /* 3 APB3_CLK */
+ CLKID_APB4CLK, /* 4 APB4_CLK */
+ CLKID_AHB2INTCCLK, /* 5 AHB_TO_INTC_CLK */
+ CLKID_AHB0CLK, /* 6 AHB0_CLK */
+ CLKID_EBICLK, /* 7 EBI_CLK */
+ CLKID_DMAPCLK, /* 8 DMA_PCLK */
+ CLKID_DMACLKGATED, /* 9 DMA_CLK_GATED */
+ CLKID_NANDFLASHS0CLK, /* 10 NANDFLASH_S0_CLK */
+ CLKID_NANDFLASHECCCLK, /* 11 NANDFLASH_ECC_CLK */
+ CLKID_NANDFLASHAESCLK, /* 12 NANDFLASH_AES_CLK (Reserved on LPC313x) */
+ CLKID_NANDFLASHNANDCLK, /* 13 NANDFLASH_NAND_CLK */
+ CLKID_NANDFLASHPCLK, /* 14 NANDFLASH_PCLK */
+ CLKID_CLOCKOUT, /* 15 CLOCK_OUT */
+ CLKID_ARM926CORECLK, /* 16 ARM926_CORE_CLK */
+ CLKID_ARM926BUSIFCLK, /* 17 ARM926_BUSIF_CLK */
+ CLKID_ARM926RETIMECLK, /* 18 ARM926_RETIME_CLK */
+ CLKID_SDMMCHCLK, /* 19 SD_MMC_HCLK */
+ CLKID_SDMMCCCLKIN, /* 20 SD_MMC_CCLK_IN */
+ CLKID_USBOTGAHBCLK, /* 21 USB_OTG_AHB_CLK */
+ CLKID_ISRAM0CLK, /* 22 ISRAM0_CLK */
+ CLKID_REDCTLRSCLK, /* 23 RED_CTL_RSCLK */
+ CLKID_ISRAM1CLK, /* 24 ISRAM1_CLK (LPC313x only) */
+ CLKID_ISROMCLK, /* 25 ISROM_CLK */
+ CLKID_MPMCCFGCLK, /* 26 MPMC_CFG_CLK */
+ CLKID_MPMCCFGCLK2, /* 27 MPMC_CFG_CLK2 */
+ CLKID_MPMCCFGCLK3, /* 28 MPMC_CFG_CLK3 */
+ CLKID_INTCCLK, /* 29 INTC_CLK */
+
+ /* Domain 1: AHB0APB0BASE */
+
+ CLKID_AHB2APB0PCLK, /* 30 AHB_TO_APB0_PCLK */
+ CLKID_EVENTROUTERPCLK, /* 31 EVENT_ROUTER_PCLK */
+ CLKID_ADCPCLK, /* 32 ADC_PCLK */
+ CLKID_ADCCLK, /* 33 ADC_CLK */
+ CLKID_WDOGPCLK, /* 34 WDOG_PCLK */
+ CLKID_IOCONFPCLK, /* 35 IOCONF_PCLK */
+ CLKID_CGUPCLK, /* 36 CGU_PCLK */
+ CLKID_SYSCREGPCLK, /* 37 SYSCREG_PCLK */
+ CLKID_OTPPCLK, /* 38 OTP_PCLK (Reserved on LPC313X) */
+ CLKID_RNGPCLK, /* 39 RNG_PCLK */
+
+ /* Domain 2: AHB0APB1BASE */
+
+ CLKID_AHB2APB1PCLK, /* 40 AHB_TO_APB1_PCLK */
+ CLKID_TIMER0PCLK, /* 41 TIMER0_PCLK */
+ CLKID_TIMER1PCLK, /* 42 TIMER1_PCLK */
+ CLKID_TIMER2PCLK, /* 43 TIMER2_PCLK */
+ CLKID_TIMER3PCLK, /* 44 TIMER3_PCLK */
+ CLKID_PWMPCLK, /* 45 PWM_PCLK */
+ CLKID_PWMPCLKREGS, /* 46 PWM_PCLK_REGS */
+ CLKID_PWMCLK, /* 47 PWM_CLK */
+ CLKID_I2C0PCLK, /* 48 I2C0_PCLK */
+ CLKID_I2C1PCLK, /* 49 I2C1_PCLK */
+
+ /* Domain 3: AHB0APB2BASE */
+
+ CLKID_AHB2APB2PCLK, /* 50 AHB_TO_APB2_PCLK */
+ CLKID_PCMPCLK, /* 51 PCM_PCLK */
+ CLKID_PCMAPBPCLK, /* 52 PCM_APB_PCLK */
+ CLKID_UARTAPBCLK, /* 53 UART_APB_CLK */
+ CLKID_LCDPCLK, /* 54 LCD_PCLK */
+ CLKID_LCDCLK, /* 55 LCD_CLK */
+ CLKID_SPIPCLK, /* 56 SPI_PCLK */
+ CLKID_SPIPCLKGATED, /* 57 SPI_PCLK_GATED */
+
+ /* Domain 4: AHB0APB3BASE */
+ CLKID_AHB2APB3PCLK, /* 58 AHB_TO_APB3_PCLK */
+ CLKID_I2SCFGPCLK, /* 59 I2S_CFG_PCLK */
+ CLKID_EDGEDETPCLK, /* 60 EDGE_DET_PCLK */
+ CLKID_I2STXFIFO0PCLK, /* 61 I2STX_FIFO_0_PCLK */
+ CLKID_I2STXIF0PCLK, /* 62 I2STX_IF_0_PCLK */
+ CLKID_I2STXFIFO1PCLK, /* 63 I2STX_FIFO_1_PCLK */
+ CLKID_I2STXIF1PCLK, /* 64 I2STX_IF_1_PCLK */
+ CLKID_I2SRXFIFO0PCLK, /* 65 I2SRX_FIFO_0_PCLK */
+ CLKID_I2SRXIF0PCLK, /* 66 I2SRX_IF_0_PCLK */
+ CLKID_I2SRXFIFO1PCLK, /* 67 I2SRX_FIFO_1_PCLK */
+ CLKID_I2SRXIF1PCLK, /* 68 I2SRX_IF_1_PCLK */
+ CLKID_RESERVED69, /* 69 Reserved */
+ CLKID_RESERVED70, /* 70 Reserved */
+
+ /* Domain 5: PCM_BASE */
+
+ CLKID_PCMCLKIP, /* 71 PCM_CLK_IP */
+
+ /* Domain 6: UART_BASE */
+
+ CLKID_UARTUCLK, /* 72 UART_U_CLK */
+
+ /* Domain 7: CLK1024FS_BASE */
+
+ CLKID_I2SEDGEDETECTCLK, /* 73 I2S_EDGE_DETECT_CLK */
+ CLKID_I2STXBCK0N, /* 74 I2STX_BCK0_N */
+ CLKID_I2STXWS0, /* 75 I2STX_WS0 */
+ CLKID_I2STXCLK0, /* 76 I2STX_CLK0 */
+ CLKID_I2STXBCK1N, /* 77 I2STX_BCK1_N */
+ CLKID_I2STXWS1, /* 78 I2STX_WS1 */
+ CLKID_CLK256FS, /* 79 CLK_256FS */
+ CLKID_I2SRXBCK0N, /* 80 I2SRX_BCK0_N */
+ CLKID_I2SRXWS0, /* 81 I2SRX_WS0 */
+ CLKID_I2SRXBCK1N, /* 82 I2SRX_BCK1_N */
+ CLKID_I2SRXWS1, /* 83 I2SRX_WS1 */
+ CLKID_RESERVED84, /* 84 Reserved */
+ CLKID_RESERVED85, /* 85 Reserved */
+ CLKID_RESERVED86, /* 86 Reserved */
+
+ /* Domain 8: BCK0_BASE */
+
+ CLKID_I2SRXBCK0, /* 87 I2SRX_BCK0 */
+
+ /* Domain 9: BCK1_BASE */
+
+ CLKID_I2SRXBCK1, /* 88 I2SRX_BCK1 */
+
+ /* Domain 10: SPI_BASE */
+
+ CLKID_SPICLK, /* 89 SPI_CLK */
+ CLKID_SPICLKGATED, /* 90 SPI_CLK_GATED */
+
+ /* Domain 11: SYSCLKO_BASE */
+
+ CLKID_SYSCLKO /* 91 SYSCLK_O */
+};
+
/************************************************************************************************
* Public Data
************************************************************************************************/
+/************************************************************************************************
+ * Inline Functions
+ ************************************************************************************************/
+
+/* Enable the specified clock */
+
+static inline void lpc313x_enableclock(enum lpc313x_clockid_e clkid)
+{
+ uint32_t address = LPC313X_CGU_PCR((int)clkid);
+ uint32_t regval = getreg32(address);
+
+ regval |= CGU_PCR_RUN;
+ putreg32(regval, address);
+}
+
+/* Disable the specified clock */
+
+static inline void lpc313x_disableclock(enum lpc313x_clockid_e clkid)
+{
+ uint32_t address = LPC313X_CGU_PCR((int)clkid);
+ uint32_t regval = getreg32(address);
+
+ regval &= ~CGU_PCR_RUN;
+ putreg32(regval, address);
+}
+
/************************************************************************************************
* Public Functions
************************************************************************************************/
+#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_LPC313X_CGU_H */
diff --git a/arch/arm/src/lpc313x/lpc313x_intc.h b/arch/arm/src/lpc313x/lpc313x_intc.h
index f96d505590..434d613560 100755
--- a/arch/arm/src/lpc313x/lpc313x_intc.h
+++ b/arch/arm/src/lpc313x/lpc313x_intc.h
@@ -93,42 +93,42 @@
/* INTC register (virtual) addresses ************************************************************/
-#define LPC313X_INTC_PRIORITYMASK0 (LPC313X_ITC_VBASE+LPC313X_INTC_PRIORITYMASK0_OFFSET)
-#define LPC313X_INTC_PRIORITYMASK1 (LPC313X_ITC_VBASE+LPC313X_INTC_PRIORITYMASK1_OFFSET)
-#define LPC313X_INTC_VECTOR0 (LPC313X_ITC_VBASE+LPC313X_INTC_VECTOR0_OFFSET)
-#define LPC313X_INTC_VECTOR1 (LPC313X_ITC_VBASE+LPC313X_INTC_VECTOR1_OFFSET)
-#define LPC313X_INTC_PENDING (LPC313X_ITC_VBASE+LPC313X_INTC_PENDING_OFFSET)
-#define LPC313X_INTC_FEATURES (LPC313X_ITC_VBASE+LPC313X_INTC_FEATURES_OFFSET)
-#define LPC313X_INTC_REQUEST(n) (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST_OFFSET(n))
-#define LPC313X_INTC_REQUEST1 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST1_OFFSET)
-#define LPC313X_INTC_REQUEST2 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST2_OFFSET)
-#define LPC313X_INTC_REQUEST3 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST3_OFFSET)
-#define LPC313X_INTC_REQUEST4 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST4_OFFSET)
-#define LPC313X_INTC_REQUEST5 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST5_OFFSET)
-#define LPC313X_INTC_REQUEST6 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST6_OFFSET)
-#define LPC313X_INTC_REQUEST7 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST7_OFFSET)
-#define LPC313X_INTC_REQUEST8 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST8_OFFSET)
-#define LPC313X_INTC_REQUEST9 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST9_OFFSET)
-#define LPC313X_INTC_REQUEST10 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST10_OFFSET)
-#define LPC313X_INTC_REQUEST11 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST11_OFFSET)
-#define LPC313X_INTC_REQUEST12 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST12_OFFSET)
-#define LPC313X_INTC_REQUEST13 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST13_OFFSET)
-#define LPC313X_INTC_REQUEST14 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST14_OFFSET)
-#define LPC313X_INTC_REQUEST15 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST15_OFFSET)
-#define LPC313X_INTC_REQUEST16 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST16_OFFSET)
-#define LPC313X_INTC_REQUEST17 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST17_OFFSET)
-#define LPC313X_INTC_REQUEST18 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST18_OFFSET)
-#define LPC313X_INTC_REQUEST19 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST19_OFFSET)
-#define LPC313X_INTC_REQUEST20 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST20_OFFSET)
-#define LPC313X_INTC_REQUEST21 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST21_OFFSET)
-#define LPC313X_INTC_REQUEST22 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST22_OFFSET)
-#define LPC313X_INTC_REQUEST23 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST23_OFFSET)
-#define LPC313X_INTC_REQUEST24 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST24_OFFSET)
-#define LPC313X_INTC_REQUEST25 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST25_OFFSET)
-#define LPC313X_INTC_REQUEST26 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST26_OFFSET)
-#define LPC313X_INTC_REQUEST27 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST27_OFFSET)
-#define LPC313X_INTC_REQUEST28 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST28_OFFSET)
-#define LPC313X_INTC_REQUEST29 (LPC313X_ITC_VBASE+LPC313X_INTC_REQUEST29_OFFSET)
+#define LPC313X_INTC_PRIORITYMASK0 (LPC313X_INTC_VBASE+LPC313X_INTC_PRIORITYMASK0_OFFSET)
+#define LPC313X_INTC_PRIORITYMASK1 (LPC313X_INTC_VBASE+LPC313X_INTC_PRIORITYMASK1_OFFSET)
+#define LPC313X_INTC_VECTOR0 (LPC313X_INTC_VBASE+LPC313X_INTC_VECTOR0_OFFSET)
+#define LPC313X_INTC_VECTOR1 (LPC313X_INTC_VBASE+LPC313X_INTC_VECTOR1_OFFSET)
+#define LPC313X_INTC_PENDING (LPC313X_INTC_VBASE+LPC313X_INTC_PENDING_OFFSET)
+#define LPC313X_INTC_FEATURES (LPC313X_INTC_VBASE+LPC313X_INTC_FEATURES_OFFSET)
+#define LPC313X_INTC_REQUEST(n) (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST_OFFSET(n))
+#define LPC313X_INTC_REQUEST1 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST1_OFFSET)
+#define LPC313X_INTC_REQUEST2 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST2_OFFSET)
+#define LPC313X_INTC_REQUEST3 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST3_OFFSET)
+#define LPC313X_INTC_REQUEST4 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST4_OFFSET)
+#define LPC313X_INTC_REQUEST5 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST5_OFFSET)
+#define LPC313X_INTC_REQUEST6 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST6_OFFSET)
+#define LPC313X_INTC_REQUEST7 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST7_OFFSET)
+#define LPC313X_INTC_REQUEST8 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST8_OFFSET)
+#define LPC313X_INTC_REQUEST9 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST9_OFFSET)
+#define LPC313X_INTC_REQUEST10 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST10_OFFSET)
+#define LPC313X_INTC_REQUEST11 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST11_OFFSET)
+#define LPC313X_INTC_REQUEST12 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST12_OFFSET)
+#define LPC313X_INTC_REQUEST13 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST13_OFFSET)
+#define LPC313X_INTC_REQUEST14 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST14_OFFSET)
+#define LPC313X_INTC_REQUEST15 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST15_OFFSET)
+#define LPC313X_INTC_REQUEST16 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST16_OFFSET)
+#define LPC313X_INTC_REQUEST17 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST17_OFFSET)
+#define LPC313X_INTC_REQUEST18 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST18_OFFSET)
+#define LPC313X_INTC_REQUEST19 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST19_OFFSET)
+#define LPC313X_INTC_REQUEST20 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST20_OFFSET)
+#define LPC313X_INTC_REQUEST21 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST21_OFFSET)
+#define LPC313X_INTC_REQUEST22 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST22_OFFSET)
+#define LPC313X_INTC_REQUEST23 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST23_OFFSET)
+#define LPC313X_INTC_REQUEST24 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST24_OFFSET)
+#define LPC313X_INTC_REQUEST25 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST25_OFFSET)
+#define LPC313X_INTC_REQUEST26 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST26_OFFSET)
+#define LPC313X_INTC_REQUEST27 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST27_OFFSET)
+#define LPC313X_INTC_REQUEST28 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST28_OFFSET)
+#define LPC313X_INTC_REQUEST29 (LPC313X_INTC_VBASE+LPC313X_INTC_REQUEST29_OFFSET)
/* INTC register bit definitions ****************************************************************/
@@ -175,10 +175,13 @@
#define INTC_REQUEST_WEACTLOW (1 << 25) /* Bit 25: Write Enable ACTIVE_LOW */
#define INTC_REQUEST_ACTLOW (1 << 17) /* Bit 17: Active Low */
#define INTC_REQUEST_ENABLE (1 << 16) /* Bit 16: Enable interrupt request */
-#define INTC_REQUEST_TARGET_SHIFT (8) /* Bits 8-13: Interrupt target */
+#define INTC_REQUEST_TARGET_SHIFT (8) /* Bits 8-13: Interrupt target */
#define INTC_REQUEST_TARGET_MASK (63 << INTC_REQUEST_TARGET_SHIFT)
-#define INTC_REQUEST_PRIOLEVEL_SHIFT (0) /* Bits 0-7: Priority level */
+# define INTC_REQUEST_TARGET_IRQ (0 << INTC_REQUEST_TARGET_SHIFT) /* Proc interrupt request 0: IRQ */
+# define INTC_REQUEST_TARGET_FIQ (1 << INTC_REQUEST_TARGET_SHIFT) /* Proc interrupt request 1: FIQ */
+#define INTC_REQUEST_PRIOLEVEL_SHIFT (0) /* Bits 0-7: Priority level */
#define INTC_REQUEST_PRIOLEVEL_MASK (255 << INTC_REQUEST_PRIOLEVEL_SHIFT)
+# define INTC_REQUEST_PRIOLEVEL(n) (((n) << INTC_REQUEST_TARGET_SHIFT) & INTC_REQUEST_PRIOLEVEL_MASK)
/************************************************************************************************
* Public Types
diff --git a/arch/arm/src/lpc313x/lpc313x_irq.c b/arch/arm/src/lpc313x/lpc313x_irq.c
new file mode 100755
index 0000000000..348a3fe267
--- /dev/null
+++ b/arch/arm/src/lpc313x/lpc313x_irq.c
@@ -0,0 +1,207 @@
+/****************************************************************************
+ * arch/arm/src/lpc313x/lpc313x_irq.c
+ * arch/arm/src/chip/lpc313x_irq.c
+ *
+ * Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <debug.h>
+
+#include <nuttx/irq.h>
+#include <nuttx/arch.h>
+#include <arch/irq.h>
+
+#include "up_arch.h"
+#include "os_internal.h"
+#include "up_internal.h"
+
+#include "lpc313x_intc.h"
+#include "lpc313x_cgu.h"
+#include "lpc313x_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+uint32_t *current_regs;
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_irqinitialize
+ ****************************************************************************/
+
+void up_irqinitialize(void)
+{
+ int irq;
+
+ /* Enable clock to interrupt controller */
+
+ lpc313x_enableclock(CLKID_AHB2INTCCLK); /* AHB_TO_INTC_CLK */
+ lpc313x_enableclock(CLKID_INTCCLK); /* INTC_CLK */
+
+ /* Set the vector base. We don't use direct vectoring, so these are set to 0. */
+
+ putreg32(0, LPC313X_INTC_VECTOR0);
+ putreg32(0, LPC313X_INTC_VECTOR1);
+
+ /* Set the priority treshold to 0, i.e. don't mask any interrupt on the
+ * basis of priority level, for both targets (IRQ/FIQ)
+ */
+
+ putreg32(0, LPC313X_INTC_PRIORITYMASK0); /* Proc interrupt request 0: IRQ */
+ putreg32(0, LPC313X_INTC_PRIORITYMASK1); /* Proc interrupt request 1: FIQ */
+
+ /* Disable all interrupts. Start from index 1 since 0 is unused.*/
+
+ for (irq = 1; irq <= NR_IRQS; irq++)
+ {
+ /* Initialize as high-active, disable the interrupt, set target to IRQ,
+ * Set priority level to 1 (= lowest) for all the interrupt lines
+ */
+
+ uint32_t address = LPC313X_INTC_REQUEST(irq);
+ putreg32(INTC_REQUEST_WEACTLOW|INTC_REQUEST_WEENABLE|INTC_REQUEST_TARGET_IRQ|
+ INTC_REQUEST_PRIOLEVEL(1)|INTC_REQUEST_WEPRIO, address);
+
+ }
+}
+
+/****************************************************************************
+ * Name: up_disable_irq
+ *
+ * Description:
+ * Disable the IRQ specified by 'irq'
+ *
+ ****************************************************************************/
+
+void up_disable_irq(int irq)
+{
+ /* Get the address of the request register corresponding to this
+ * interrupt source
+ */
+
+ uint32_t address = LPC313X_INTC_REQUEST(irq);
+
+ /* Clear the ENABLE bit with WE_ENABLE=1. Configuration settings will be
+ * preserved because WE_TARGET is zero.
+ */
+
+ putreg32(INTC_REQUEST_WEENABLE, address);
+}
+
+/****************************************************************************
+ * Name: up_enable_irq
+ *
+ * Description:
+ * Enable the IRQ specified by 'irq'
+ *
+ ****************************************************************************/
+
+void up_enable_irq(int irq)
+{
+ /* Get the address of the request register corresponding to this
+ * interrupt source
+ */
+
+ uint32_t address = LPC313X_INTC_REQUEST(irq);
+
+ /* Set the ENABLE bit with WE_ENABLE=1. Configuration settings will be
+ * preserved because WE_TARGET is zero.
+ */
+
+ putreg32(INTC_REQUEST_ENABLE|INTC_REQUEST_WEENABLE, address);
+}
+
+/****************************************************************************
+ * Name: up_maskack_irq
+ *
+ * Description:
+ * Mask the IRQ and acknowledge it
+ *
+ ****************************************************************************/
+
+void up_maskack_irq(int irq)
+{
+ /* Get the address of the request register corresponding to this
+ * interrupt source
+ */
+
+ uint32_t address = LPC313X_INTC_REQUEST(irq);
+
+ /* Clear the pending interrupt (INTC_REQUEST_CLRSWINT=1) AND disable interrupts
+ * (ENABLE=0 && WE_ENABLE=1). Configuration settings will be preserved because
+ * WE_TARGET is zero.
+ */
+
+ putreg32(INTC_REQUEST_CLRSWINT|INTC_REQUEST_WEENABLE, address);
+}
+
+/****************************************************************************
+ * Name: up_prioritize_irq
+ *
+ * Description:
+ * Set the priority of an IRQ.
+ *
+ * Since this API is not supported on all architectures, it should be
+ * avoided in common implementations where possible.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQPRIO
+int up_prioritize_irq(int irq, int priority)
+{
+#warning "Not implemented"
+ return OK;
+}
+#endif
--
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