diff options
-rw-r--r-- | Documentation/devicetree/bindings/arm/omap/crossbar.txt | 36 | ||||
-rw-r--r-- | arch/arm/boot/dts/dra7.dtsi | 139 | ||||
-rw-r--r-- | drivers/irqchip/irq-crossbar.c | 168 |
3 files changed, 260 insertions, 83 deletions
diff --git a/Documentation/devicetree/bindings/arm/omap/crossbar.txt b/Documentation/devicetree/bindings/arm/omap/crossbar.txt index fb88585..4139db3 100644 --- a/Documentation/devicetree/bindings/arm/omap/crossbar.txt +++ b/Documentation/devicetree/bindings/arm/omap/crossbar.txt @@ -10,6 +10,7 @@ Required properties: - compatible : Should be "ti,irq-crossbar" - reg: Base address and the size of the crossbar registers. - ti,max-irqs: Total number of irqs available at the interrupt controller. +- ti,max-crossbar-sources: Maximum number of crossbar sources that can be routed. - ti,reg-size: Size of a individual register in bytes. Every individual register is assumed to be of same size. Valid sizes are 1, 2, 4. - ti,irqs-reserved: List of the reserved irq lines that are not muxed using @@ -17,11 +18,46 @@ Required properties: so crossbar bar driver should not consider them as free lines. +Optional properties: +- ti,irqs-skip: This is similar to "ti,irqs-reserved", but these are for + SOC-specific hard-wiring of those irqs which unexpectedly bypasses the + crossbar. These irqs have a crossbar register, but still cannot be used. + +- ti,irqs-safe-map: integer which maps to a safe configuration to use + when the interrupt controller irq is unused (when not provided, default is 0) + Examples: crossbar_mpu: @4a020000 { compatible = "ti,irq-crossbar"; reg = <0x4a002a48 0x130>; ti,max-irqs = <160>; + ti,max-crossbar-sources = <400>; ti,reg-size = <2>; ti,irqs-reserved = <0 1 2 3 5 6 131 132 139 140>; + ti,irqs-skip = <10 133 139 140>; }; + +Consumer: +======== +See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt and +Documentation/devicetree/bindings/arm/gic.txt for further details. + +An interrupt consumer on an SoC using crossbar will use: + interrupts = <GIC_SPI request_number interrupt_level> +When the request number is between 0 to that described by +"ti,max-crossbar-sources", it is assumed to be a crossbar mapping. If the +request_number is greater than "ti,max-crossbar-sources", then it is mapped as a +quirky hardware mapping direct to GIC. + +Example: + device_x@0x4a023000 { + /* Crossbar 8 used */ + interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>; + ... + }; + + device_y@0x4a033000 { + /* Direct mapped GIC SPI 1 used */ + interrupts = <GIC_SPI DIRECT_IRQ(1) IRQ_TYPE_LEVEL_HIGH>; + ... + }; diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index c29945e..961be6b 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -12,6 +12,9 @@ #include "skeleton.dtsi" +#define MAX_SOURCES 400 +#define DIRECT_IRQ(irq) (MAX_SOURCES + irq) + / { #address-cells = <1>; #size-cells = <1>; @@ -45,6 +48,7 @@ compatible = "arm,cortex-a15-gic"; interrupt-controller; #interrupt-cells = <3>; + arm,routable-irqs = <192>; reg = <0x48211000 0x1000>, <0x48212000 0x1000>, <0x48214000 0x2000>, @@ -79,8 +83,8 @@ ti,hwmods = "l3_main_1", "l3_main_2"; reg = <0x44000000 0x1000000>, <0x45000000 0x1000>; - interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>, - <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI DIRECT_IRQ(10) IRQ_TYPE_LEVEL_HIGH>; prm: prm@4ae06000 { compatible = "ti,dra7-prm"; @@ -155,10 +159,10 @@ sdma: dma-controller@4a056000 { compatible = "ti,omap4430-sdma"; reg = <0x4a056000 0x1000>; - interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>, - <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>, - <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>, - <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>; #dma-cells = <1>; #dma-channels = <32>; #dma-requests = <127>; @@ -167,7 +171,7 @@ gpio1: gpio@4ae10000 { compatible = "ti,omap4-gpio"; reg = <0x4ae10000 0x200>; - interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio1"; gpio-controller; #gpio-cells = <2>; @@ -178,7 +182,7 @@ gpio2: gpio@48055000 { compatible = "ti,omap4-gpio"; reg = <0x48055000 0x200>; - interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio2"; gpio-controller; #gpio-cells = <2>; @@ -189,7 +193,7 @@ gpio3: gpio@48057000 { compatible = "ti,omap4-gpio"; reg = <0x48057000 0x200>; - interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio3"; gpio-controller; #gpio-cells = <2>; @@ -200,7 +204,7 @@ gpio4: gpio@48059000 { compatible = "ti,omap4-gpio"; reg = <0x48059000 0x200>; - interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio4"; gpio-controller; #gpio-cells = <2>; @@ -211,7 +215,7 @@ gpio5: gpio@4805b000 { compatible = "ti,omap4-gpio"; reg = <0x4805b000 0x200>; - interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio5"; gpio-controller; #gpio-cells = <2>; @@ -222,7 +226,7 @@ gpio6: gpio@4805d000 { compatible = "ti,omap4-gpio"; reg = <0x4805d000 0x200>; - interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio6"; gpio-controller; #gpio-cells = <2>; @@ -233,7 +237,7 @@ gpio7: gpio@48051000 { compatible = "ti,omap4-gpio"; reg = <0x48051000 0x200>; - interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio7"; gpio-controller; #gpio-cells = <2>; @@ -244,7 +248,7 @@ gpio8: gpio@48053000 { compatible = "ti,omap4-gpio"; reg = <0x48053000 0x200>; - interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "gpio8"; gpio-controller; #gpio-cells = <2>; @@ -255,7 +259,7 @@ uart1: serial@4806a000 { compatible = "ti,omap4-uart"; reg = <0x4806a000 0x100>; - interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart1"; clock-frequency = <48000000>; status = "disabled"; @@ -264,7 +268,7 @@ uart2: serial@4806c000 { compatible = "ti,omap4-uart"; reg = <0x4806c000 0x100>; - interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart2"; clock-frequency = <48000000>; status = "disabled"; @@ -273,7 +277,7 @@ uart3: serial@48020000 { compatible = "ti,omap4-uart"; reg = <0x48020000 0x100>; - interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart3"; clock-frequency = <48000000>; status = "disabled"; @@ -282,7 +286,7 @@ uart4: serial@4806e000 { compatible = "ti,omap4-uart"; reg = <0x4806e000 0x100>; - interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart4"; clock-frequency = <48000000>; status = "disabled"; @@ -291,7 +295,7 @@ uart5: serial@48066000 { compatible = "ti,omap4-uart"; reg = <0x48066000 0x100>; - interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart5"; clock-frequency = <48000000>; status = "disabled"; @@ -300,7 +304,7 @@ uart6: serial@48068000 { compatible = "ti,omap4-uart"; reg = <0x48068000 0x100>; - interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart6"; clock-frequency = <48000000>; status = "disabled"; @@ -309,6 +313,7 @@ uart7: serial@48420000 { compatible = "ti,omap4-uart"; reg = <0x48420000 0x100>; + interrupts = <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart7"; clock-frequency = <48000000>; status = "disabled"; @@ -317,6 +322,7 @@ uart8: serial@48422000 { compatible = "ti,omap4-uart"; reg = <0x48422000 0x100>; + interrupts = <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart8"; clock-frequency = <48000000>; status = "disabled"; @@ -325,6 +331,7 @@ uart9: serial@48424000 { compatible = "ti,omap4-uart"; reg = <0x48424000 0x100>; + interrupts = <GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart9"; clock-frequency = <48000000>; status = "disabled"; @@ -333,6 +340,7 @@ uart10: serial@4ae2b000 { compatible = "ti,omap4-uart"; reg = <0x4ae2b000 0x100>; + interrupts = <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart10"; clock-frequency = <48000000>; status = "disabled"; @@ -341,7 +349,7 @@ timer1: timer@4ae18000 { compatible = "ti,omap5430-timer"; reg = <0x4ae18000 0x80>; - interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer1"; ti,timer-alwon; }; @@ -349,28 +357,28 @@ timer2: timer@48032000 { compatible = "ti,omap5430-timer"; reg = <0x48032000 0x80>; - interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer2"; }; timer3: timer@48034000 { compatible = "ti,omap5430-timer"; reg = <0x48034000 0x80>; - interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer3"; }; timer4: timer@48036000 { compatible = "ti,omap5430-timer"; reg = <0x48036000 0x80>; - interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer4"; }; timer5: timer@48820000 { compatible = "ti,omap5430-timer"; reg = <0x48820000 0x80>; - interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer5"; ti,timer-dsp; }; @@ -378,7 +386,7 @@ timer6: timer@48822000 { compatible = "ti,omap5430-timer"; reg = <0x48822000 0x80>; - interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer6"; ti,timer-dsp; ti,timer-pwm; @@ -387,7 +395,7 @@ timer7: timer@48824000 { compatible = "ti,omap5430-timer"; reg = <0x48824000 0x80>; - interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer7"; ti,timer-dsp; }; @@ -395,7 +403,7 @@ timer8: timer@48826000 { compatible = "ti,omap5430-timer"; reg = <0x48826000 0x80>; - interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer8"; ti,timer-dsp; ti,timer-pwm; @@ -404,21 +412,21 @@ timer9: timer@4803e000 { compatible = "ti,omap5430-timer"; reg = <0x4803e000 0x80>; - interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer9"; }; timer10: timer@48086000 { compatible = "ti,omap5430-timer"; reg = <0x48086000 0x80>; - interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer10"; }; timer11: timer@48088000 { compatible = "ti,omap5430-timer"; reg = <0x48088000 0x80>; - interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer11"; ti,timer-pwm; }; @@ -426,6 +434,7 @@ timer13: timer@48828000 { compatible = "ti,omap5430-timer"; reg = <0x48828000 0x80>; + interrupts = <GIC_SPI 339 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer13"; status = "disabled"; }; @@ -433,6 +442,7 @@ timer14: timer@4882a000 { compatible = "ti,omap5430-timer"; reg = <0x4882a000 0x80>; + interrupts = <GIC_SPI 340 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer14"; status = "disabled"; }; @@ -440,6 +450,7 @@ timer15: timer@4882c000 { compatible = "ti,omap5430-timer"; reg = <0x4882c000 0x80>; + interrupts = <GIC_SPI 341 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer15"; status = "disabled"; }; @@ -447,6 +458,7 @@ timer16: timer@4882e000 { compatible = "ti,omap5430-timer"; reg = <0x4882e000 0x80>; + interrupts = <GIC_SPI 342 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "timer16"; status = "disabled"; }; @@ -454,7 +466,7 @@ wdt2: wdt@4ae14000 { compatible = "ti,omap4-wdt"; reg = <0x4ae14000 0x80>; - interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "wd_timer2"; }; @@ -468,14 +480,14 @@ dmm@4e000000 { compatible = "ti,omap5-dmm"; reg = <0x4e000000 0x800>; - interrupts = <0 113 0x4>; + interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "dmm"; }; i2c1: i2c@48070000 { compatible = "ti,omap4-i2c"; reg = <0x48070000 0x100>; - interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "i2c1"; @@ -485,7 +497,7 @@ i2c2: i2c@48072000 { compatible = "ti,omap4-i2c"; reg = <0x48072000 0x100>; - interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "i2c2"; @@ -495,7 +507,7 @@ i2c3: i2c@48060000 { compatible = "ti,omap4-i2c"; reg = <0x48060000 0x100>; - interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "i2c3"; @@ -505,7 +517,7 @@ i2c4: i2c@4807a000 { compatible = "ti,omap4-i2c"; reg = <0x4807a000 0x100>; - interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "i2c4"; @@ -515,7 +527,7 @@ i2c5: i2c@4807c000 { compatible = "ti,omap4-i2c"; reg = <0x4807c000 0x100>; - interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "i2c5"; @@ -525,7 +537,7 @@ mmc1: mmc@4809c000 { compatible = "ti,omap4-hsmmc"; reg = <0x4809c000 0x400>; - interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "mmc1"; ti,dual-volt; ti,needs-special-reset; @@ -538,7 +550,7 @@ mmc2: mmc@480b4000 { compatible = "ti,omap4-hsmmc"; reg = <0x480b4000 0x400>; - interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "mmc2"; ti,needs-special-reset; dmas = <&sdma 47>, <&sdma 48>; @@ -549,7 +561,7 @@ mmc3: mmc@480ad000 { compatible = "ti,omap4-hsmmc"; reg = <0x480ad000 0x400>; - interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "mmc3"; ti,needs-special-reset; dmas = <&sdma 77>, <&sdma 78>; @@ -560,7 +572,7 @@ mmc4: mmc@480d1000 { compatible = "ti,omap4-hsmmc"; reg = <0x480d1000 0x400>; - interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "mmc4"; ti,needs-special-reset; dmas = <&sdma 57>, <&sdma 58>; @@ -703,7 +715,7 @@ mcspi1: spi@48098000 { compatible = "ti,omap4-mcspi"; reg = <0x48098000 0x200>; - interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "mcspi1"; @@ -724,7 +736,7 @@ mcspi2: spi@4809a000 { compatible = "ti,omap4-mcspi"; reg = <0x4809a000 0x200>; - interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "mcspi2"; @@ -740,7 +752,7 @@ mcspi3: spi@480b8000 { compatible = "ti,omap4-mcspi"; reg = <0x480b8000 0x200>; - interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "mcspi3"; @@ -753,7 +765,7 @@ mcspi4: spi@480ba000 { compatible = "ti,omap4-mcspi"; reg = <0x480ba000 0x200>; - interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; ti,hwmods = "mcspi4"; @@ -773,7 +785,7 @@ clocks = <&qspi_gfclk_div>; clock-names = "fck"; num-cs = <4>; - interrupts = <0 343 0x4>; + interrupts = <GIC_SPI 343 IRQ_TYPE_LEVEL_HIGH>; status = "disabled"; }; @@ -809,7 +821,7 @@ sata: sata@4a141100 { compatible = "snps,dwc-ahci"; reg = <0x4a140000 0x1100>, <0x4a141100 0x7>; - interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>; phys = <&sata_phy>; phy-names = "sata-phy"; clocks = <&sata_ref_clk>; @@ -886,7 +898,7 @@ compatible = "ti,dwc3"; ti,hwmods = "usb_otg_ss1"; reg = <0x48880000 0x10000>; - interrupts = <0 77 4>; + interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <1>; utmi-mode = <2>; @@ -894,7 +906,7 @@ usb1: usb@48890000 { compatible = "snps,dwc3"; reg = <0x48890000 0x17000>; - interrupts = <0 76 4>; + interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>; phys = <&usb2_phy1>, <&usb3_phy1>; phy-names = "usb2-phy", "usb3-phy"; tx-fifo-resize; @@ -907,7 +919,7 @@ compatible = "ti,dwc3"; ti,hwmods = "usb_otg_ss2"; reg = <0x488c0000 0x10000>; - interrupts = <0 92 4>; + interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <1>; utmi-mode = <2>; @@ -915,7 +927,7 @@ usb2: usb@488d0000 { compatible = "snps,dwc3"; reg = <0x488d0000 0x17000>; - interrupts = <0 78 4>; + interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; phys = <&usb2_phy2>; phy-names = "usb2-phy"; tx-fifo-resize; @@ -929,7 +941,7 @@ compatible = "ti,dwc3"; ti,hwmods = "usb_otg_ss3"; reg = <0x48900000 0x10000>; - /* interrupts = <0 TBD 4>; */ + interrupts = <GIC_SPI 344 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <1>; utmi-mode = <2>; @@ -938,7 +950,7 @@ usb3: usb@48910000 { compatible = "snps,dwc3"; reg = <0x48910000 0x17000>; - /* interrupts = <0 93 4>; */ + interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>; tx-fifo-resize; maximum-speed = "high-speed"; dr_mode = "otg"; @@ -949,7 +961,7 @@ compatible = "ti,dwc3"; ti,hwmods = "usb_otg_ss4"; reg = <0x48940000 0x10000>; - /* interrupts = <0 TBD 4>; */ + interrupts = <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <1>; utmi-mode = <2>; @@ -958,7 +970,7 @@ usb4: usb@48950000 { compatible = "snps,dwc3"; reg = <0x48950000 0x17000>; - /* interrupts = <0 TBD 4>; */ + interrupts = <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>; tx-fifo-resize; maximum-speed = "high-speed"; dr_mode = "otg"; @@ -968,7 +980,7 @@ elm: elm@48078000 { compatible = "ti,am3352-elm"; reg = <0x48078000 0xfc0>; /* device IO registers */ - interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "elm"; status = "disabled"; }; @@ -977,13 +989,24 @@ compatible = "ti,am3352-gpmc"; ti,hwmods = "gpmc"; reg = <0x50000000 0x37c>; /* device IO registers */ - interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>; gpmc,num-cs = <8>; gpmc,num-waitpins = <2>; #address-cells = <2>; #size-cells = <1>; status = "disabled"; }; + + crossbar_mpu: crossbar@4a020000 { + compatible = "ti,irq-crossbar"; + reg = <0x4a002a48 0x130>; + ti,max-irqs = <160>; + ti,max-crossbar-sources = <MAX_SOURCES>; + ti,reg-size = <2>; + ti,irqs-reserved = <0 1 2 3 5 6 131 132>; + ti,irqs-skip = <10 133 139 140>; + ti,irqs-safe-map = <0>; + }; }; }; diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c index 3d15d16..85c2985 100644 --- a/drivers/irqchip/irq-crossbar.c +++ b/drivers/irqchip/irq-crossbar.c @@ -15,22 +15,31 @@ #include <linux/of_irq.h> #include <linux/slab.h> #include <linux/irqchip/arm-gic.h> +#include <linux/irqchip/irq-crossbar.h> #define IRQ_FREE -1 +#define IRQ_RESERVED -2 +#define IRQ_SKIP -3 #define GIC_IRQ_START 32 -/* +/** + * struct crossbar_device - crossbar device description * @int_max: maximum number of supported interrupts + * @safe_map: safe default value to initialize the crossbar + * @max_crossbar_sources: Maximum number of crossbar sources * @irq_map: array of interrupts to crossbar number mapping * @crossbar_base: crossbar base address * @register_offsets: offsets for each irq number + * @write: register write function pointer */ struct crossbar_device { uint int_max; + uint safe_map; + uint max_crossbar_sources; uint *irq_map; void __iomem *crossbar_base; int *register_offsets; - void (*write) (int, int); + void (*write)(int, int); }; static struct crossbar_device *cb; @@ -50,11 +59,22 @@ static inline void crossbar_writeb(int irq_no, int cb_no) writeb(cb_no, cb->crossbar_base + cb->register_offsets[irq_no]); } +static inline int get_prev_map_irq(int cb_no) +{ + int i; + + for (i = cb->int_max - 1; i >= 0; i--) + if (cb->irq_map[i] == cb_no) + return i; + + return -ENODEV; +} + static inline int allocate_free_irq(int cb_no) { int i; - for (i = 0; i < cb->int_max; i++) { + for (i = cb->int_max - 1; i >= 0; i--) { if (cb->irq_map[i] == IRQ_FREE) { cb->irq_map[i] = cb_no; return i; @@ -64,19 +84,47 @@ static inline int allocate_free_irq(int cb_no) return -ENODEV; } +static inline bool needs_crossbar_write(irq_hw_number_t hw) +{ + int cb_no; + + if (hw > GIC_IRQ_START) { + cb_no = cb->irq_map[hw - GIC_IRQ_START]; + if (cb_no != IRQ_RESERVED && cb_no != IRQ_SKIP) + return true; + } + + return false; +} + static int crossbar_domain_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) { - cb->write(hw - GIC_IRQ_START, cb->irq_map[hw - GIC_IRQ_START]); + if (needs_crossbar_write(hw)) + cb->write(hw - GIC_IRQ_START, cb->irq_map[hw - GIC_IRQ_START]); + return 0; } +/** + * crossbar_domain_unmap - unmap a crossbar<->irq connection + * @d: domain of irq to unmap + * @irq: virq number + * + * We do not maintain a use count of total number of map/unmap + * calls for a particular irq to find out if a irq can be really + * unmapped. This is because unmap is called during irq_dispose_mapping(irq), + * after which irq is anyways unusable. So an explicit map has to be called + * after that. + */ static void crossbar_domain_unmap(struct irq_domain *d, unsigned int irq) { irq_hw_number_t hw = irq_get_irq_data(irq)->hwirq; - if (hw > GIC_IRQ_START) + if (needs_crossbar_write(hw)) { cb->irq_map[hw - GIC_IRQ_START] = IRQ_FREE; + cb->write(hw - GIC_IRQ_START, cb->safe_map); + } } static int crossbar_domain_xlate(struct irq_domain *d, @@ -85,18 +133,41 @@ static int crossbar_domain_xlate(struct irq_domain *d, unsigned long *out_hwirq, unsigned int *out_type) { - unsigned long ret; + int ret; + int req_num = intspec[1]; + int direct_map_num; + + if (req_num >= cb->max_crossbar_sources) { + direct_map_num = req_num - cb->max_crossbar_sources; + if (direct_map_num < cb->int_max) { + ret = cb->irq_map[direct_map_num]; + if (ret == IRQ_RESERVED || ret == IRQ_SKIP) { + /* We use the interrupt num as h/w irq num */ + ret = direct_map_num; + goto found; + } + } + + pr_err("%s: requested crossbar number %d > max %d\n", + __func__, req_num, cb->max_crossbar_sources); + return -EINVAL; + } - ret = allocate_free_irq(intspec[1]); + ret = get_prev_map_irq(req_num); + if (ret >= 0) + goto found; - if (IS_ERR_VALUE(ret)) + ret = allocate_free_irq(req_num); + + if (ret < 0) return ret; +found: *out_hwirq = ret + GIC_IRQ_START; return 0; } -const struct irq_domain_ops routable_irq_domain_ops = { +static const struct irq_domain_ops routable_irq_domain_ops = { .map = crossbar_domain_map, .unmap = crossbar_domain_unmap, .xlate = crossbar_domain_xlate @@ -104,22 +175,36 @@ const struct irq_domain_ops routable_irq_domain_ops = { static int __init crossbar_of_init(struct device_node *node) { - int i, size, max, reserved = 0, entry; + int i, size, max = 0, reserved = 0, entry; const __be32 *irqsr; + int ret = -ENOMEM; cb = kzalloc(sizeof(*cb), GFP_KERNEL); if (!cb) - return -ENOMEM; + return ret; cb->crossbar_base = of_iomap(node, 0); if (!cb->crossbar_base) - goto err1; + goto err_cb; + + of_property_read_u32(node, "ti,max-crossbar-sources", + &cb->max_crossbar_sources); + if (!cb->max_crossbar_sources) { + pr_err("missing 'ti,max-crossbar-sources' property\n"); + ret = -EINVAL; + goto err_base; + } of_property_read_u32(node, "ti,max-irqs", &max); - cb->irq_map = kzalloc(max * sizeof(int), GFP_KERNEL); + if (!max) { + pr_err("missing 'ti,max-irqs' property\n"); + ret = -EINVAL; + goto err_base; + } + cb->irq_map = kcalloc(max, sizeof(int), GFP_KERNEL); if (!cb->irq_map) - goto err2; + goto err_base; cb->int_max = max; @@ -137,15 +222,35 @@ static int __init crossbar_of_init(struct device_node *node) i, &entry); if (entry > max) { pr_err("Invalid reserved entry\n"); - goto err3; + ret = -EINVAL; + goto err_irq_map; + } + cb->irq_map[entry] = IRQ_RESERVED; + } + } + + /* Skip irqs hardwired to bypass the crossbar */ + irqsr = of_get_property(node, "ti,irqs-skip", &size); + if (irqsr) { + size /= sizeof(__be32); + + for (i = 0; i < size; i++) { + of_property_read_u32_index(node, + "ti,irqs-skip", + i, &entry); + if (entry > max) { + pr_err("Invalid skip entry\n"); + ret = -EINVAL; + goto err_irq_map; } - cb->irq_map[entry] = 0; + cb->irq_map[entry] = IRQ_SKIP; } } - cb->register_offsets = kzalloc(max * sizeof(int), GFP_KERNEL); + + cb->register_offsets = kcalloc(max, sizeof(int), GFP_KERNEL); if (!cb->register_offsets) - goto err3; + goto err_irq_map; of_property_read_u32(node, "ti,reg-size", &size); @@ -161,7 +266,8 @@ static int __init crossbar_of_init(struct device_node *node) break; default: pr_err("Invalid reg-size property\n"); - goto err4; + ret = -EINVAL; + goto err_reg_offset; break; } @@ -170,25 +276,37 @@ static int __init crossbar_of_init(struct device_node *node) * reserved irqs. so find and store the offsets once. */ for (i = 0; i < max; i++) { - if (!cb->irq_map[i]) + if (cb->irq_map[i] == IRQ_RESERVED) continue; cb->register_offsets[i] = reserved; reserved += size; } + of_property_read_u32(node, "ti,irqs-safe-map", &cb->safe_map); + /* Initialize the crossbar with safe map to start with */ + for (i = 0; i < max; i++) { + if (cb->irq_map[i] == IRQ_RESERVED || + cb->irq_map[i] == IRQ_SKIP) + continue; + + cb->write(i, cb->safe_map); + } + register_routable_domain_ops(&routable_irq_domain_ops); return 0; -err4: +err_reg_offset: kfree(cb->register_offsets); -err3: +err_irq_map: kfree(cb->irq_map); -err2: +err_base: iounmap(cb->crossbar_base); -err1: +err_cb: kfree(cb); - return -ENOMEM; + + cb = NULL; + return ret; } static const struct of_device_id crossbar_match[] __initconst = { |