diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-12-26 20:46:11 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-12-26 20:46:11 +0000 |
commit | 2d45cc4d649904022b052d46fb4248d66353ffb8 (patch) | |
tree | 990ea5db26969f9f1a35a9d0888d355d56c7bc01 /nuttx/arch/arm/src/lpc313x | |
parent | a5e34e6400a632d6e2eb96ee3f06aac0b5522535 (diff) | |
download | px4-nuttx-2d45cc4d649904022b052d46fb4248d66353ffb8.tar.gz px4-nuttx-2d45cc4d649904022b052d46fb4248d66353ffb8.tar.bz2 px4-nuttx-2d45cc4d649904022b052d46fb4248d66353ffb8.zip |
Add basic interrupt controls
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2437 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm/src/lpc313x')
-rwxr-xr-x | nuttx/arch/arm/src/lpc313x/Make.defs | 2 | ||||
-rwxr-xr-x | nuttx/arch/arm/src/lpc313x/lpc313x_cgu.h | 205 | ||||
-rwxr-xr-x | nuttx/arch/arm/src/lpc313x/lpc313x_intc.h | 79 | ||||
-rwxr-xr-x | nuttx/arch/arm/src/lpc313x/lpc313x_irq.c | 207 |
4 files changed, 446 insertions, 47 deletions
diff --git a/nuttx/arch/arm/src/lpc313x/Make.defs b/nuttx/arch/arm/src/lpc313x/Make.defs index 002744355..7da06d7ee 100755 --- a/nuttx/arch/arm/src/lpc313x/Make.defs +++ b/nuttx/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/nuttx/arch/arm/src/lpc313x/lpc313x_cgu.h b/nuttx/arch/arm/src/lpc313x/lpc313x_cgu.h index 44652da9f..f6d46fa09 100755 --- a/nuttx/arch/arm/src/lpc313x/lpc313x_cgu.h +++ b/nuttx/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/nuttx/arch/arm/src/lpc313x/lpc313x_intc.h b/nuttx/arch/arm/src/lpc313x/lpc313x_intc.h index f96d50559..434d61356 100755 --- a/nuttx/arch/arm/src/lpc313x/lpc313x_intc.h +++ b/nuttx/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/nuttx/arch/arm/src/lpc313x/lpc313x_irq.c b/nuttx/arch/arm/src/lpc313x/lpc313x_irq.c new file mode 100755 index 000000000..348a3fe26 --- /dev/null +++ b/nuttx/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 |