/* $NetBSD: kirkwood.c,v 1.2 2010/10/30 06:37:49 kiyohara Exp $ */ /* * Copyright (c) 2010 KIYOHARA Takashi * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #include __KERNEL_RCSID(0, "$NetBSD: kirkwood.c,v 1.2 2010/10/30 06:37:49 kiyohara Exp $"); #define _INTR_PRIVATE #include "mvsocgpp.h" #include #include #include #include #include #include #include #include #include static void kirkwood_intr_init(void); static void kirkwood_pic_unblock_low_irqs(struct pic_softc *, size_t, uint32_t); static void kirkwood_pic_unblock_high_irqs(struct pic_softc *, size_t, uint32_t); static void kirkwood_pic_block_low_irqs(struct pic_softc *, size_t, uint32_t); static void kirkwood_pic_block_high_irqs(struct pic_softc *, size_t, uint32_t); static int kirkwood_pic_find_pending_high_irqs(struct pic_softc *); static void kirkwood_pic_establish_irq(struct pic_softc *, struct intrsource *); static void kirkwood_pic_source_name(struct pic_softc *, int, char *, size_t); static int kirkwood_find_pending_irqs(void); static const char * const sources[64] = { "MainHighSum(0)", "Bridge(1)", "Host2CPU DB(2)", "CPU2Host DB(3)", "Reserved_4(4)", "Xor0Chan0(5)", "Xor0Chan1(6)", "Xor1Chan0(7)", "Xor1Chan1(8)", "PEX0INT(9)", "Reserved(10)", "GbE0Sum(11)", "GbE0Rx(12)", "GbE0Tx(13)", "GbE0Misc(14)", "GbE1Sum(15)", "GbE1Rx(16)", "GbE1Tx(17)", "GbE1Misc(18)", "USB0Cnt(19)", "Reserved(20)", "Sata(21)", "SecurityInt(22)", "SPIInt(23)", "AudioINT(24)", "Reserved(25)", "TS0Int(26)", "Reserved(27)", "SDIOInt(28)", "TWSI(29)", "AVBInt(30)", "TDMInt(31)" "Reserved(32)", "Uart0Int(33)", "Uart1Int(34)", "GPIOLo7_0(35)" "GPIOLo8_15(36)", "GPIOLo16_23(37)", "GPIOLo24_31(38)", "GPIOHi7_0(39)" "GPIOHi8_15(40)", "GPIOHi16_23(41)", "XOR0Err(42)", "XOR1Err(43)" "PEX0Err(44)", "Reserved(45)", "GbE0Err(46)", "GbE1Err(47)" "USBErr(48)", "SecurityErr(49)", "AudioErr(50)", "Reserved(51)" "Reserved(52)", "RTCInt(53)", "Reserved(54)", "Reserved(55)" "Reserved(56)", "Reserved(57)", "Reserved(58)", "Reserved(59)" "Reserved(60)", "Reserved(61)", "Reserved(62)", "Reserved(63)" }; static struct pic_ops kirkwood_picops_low = { .pic_unblock_irqs = kirkwood_pic_unblock_low_irqs, .pic_block_irqs = kirkwood_pic_block_low_irqs, .pic_establish_irq = kirkwood_pic_establish_irq, .pic_source_name = kirkwood_pic_source_name, }; static struct pic_ops kirkwood_picops_high = { .pic_unblock_irqs = kirkwood_pic_unblock_high_irqs, .pic_block_irqs = kirkwood_pic_block_high_irqs, .pic_find_pending_irqs = kirkwood_pic_find_pending_high_irqs, .pic_establish_irq = kirkwood_pic_establish_irq, .pic_source_name = kirkwood_pic_source_name, }; static struct pic_softc kirkwood_pic_low = { .pic_ops = &kirkwood_picops_low, .pic_maxsources = 32, .pic_name = "kirkwood_low", }; static struct pic_softc kirkwood_pic_high = { .pic_ops = &kirkwood_picops_high, .pic_maxsources = 32, .pic_name = "kirkwood_high", }; /* * kirkwood_intr_bootstrap: * * Initialize the rest of the interrupt subsystem, making it * ready to handle interrupts from devices. */ void kirkwood_intr_bootstrap(void) { extern void (*mvsoc_intr_init)(void); /* disable all interrupts */ write_mlmbreg(KIRKWOOD_MLMB_MIRQIMLR, 0); write_mlmbreg(KIRKWOOD_MLMB_MIRQIMHR, 0); /* disable all bridge interrupts */ write_mlmbreg(MVSOC_MLMB_MLMBIMR, 0); mvsoc_intr_init = kirkwood_intr_init; #if NMVSOCGPP > 0 switch (mvsoc_model()) { case MARVELL_KIRKWOOD_88F6180: gpp_npins = 30; break; case MARVELL_KIRKWOOD_88F6192: gpp_npins = 36; break; case MARVELL_KIRKWOOD_88F6281: gpp_npins = 50; break; } gpp_irqbase = 96; /* Main Low(32) + High(32) + Bridge(32) */ #endif } static void kirkwood_intr_init(void) { extern struct pic_softc mvsoc_bridge_pic; void *ih; pic_add(&kirkwood_pic_low, 0); pic_add(&kirkwood_pic_high, 32); ih = intr_establish(KIRKWOOD_IRQ_HIGH, IPL_HIGH, IST_LEVEL_HIGH, pic_handle_intr, &kirkwood_pic_high); KASSERT(ih != NULL); pic_add(&mvsoc_bridge_pic, 64); ih = intr_establish(KIRKWOOD_IRQ_BRIDGE, IPL_HIGH, IST_LEVEL_HIGH, pic_handle_intr, &mvsoc_bridge_pic); KASSERT(ih != NULL); find_pending_irqs = kirkwood_find_pending_irqs; } /* ARGSUSED */ static void kirkwood_pic_unblock_low_irqs(struct pic_softc *pic, size_t irqbase, uint32_t irq_mask) { write_mlmbreg(KIRKWOOD_MLMB_MIRQIMLR, read_mlmbreg(KIRKWOOD_MLMB_MIRQIMLR) | irq_mask); } /* ARGSUSED */ static void kirkwood_pic_unblock_high_irqs(struct pic_softc *pic, size_t irqbase, uint32_t irq_mask) { write_mlmbreg(KIRKWOOD_MLMB_MIRQIMHR, read_mlmbreg(KIRKWOOD_MLMB_MIRQIMHR) | irq_mask); } /* ARGSUSED */ static void kirkwood_pic_block_low_irqs(struct pic_softc *pic, size_t irqbase, uint32_t irq_mask) { write_mlmbreg(KIRKWOOD_MLMB_MIRQIMLR, read_mlmbreg(KIRKWOOD_MLMB_MIRQIMLR) & ~irq_mask); } /* ARGSUSED */ static void kirkwood_pic_block_high_irqs(struct pic_softc *pic, size_t irqbase, uint32_t irq_mask) { write_mlmbreg(KIRKWOOD_MLMB_MIRQIMHR, read_mlmbreg(KIRKWOOD_MLMB_MIRQIMHR) & ~irq_mask); } static int kirkwood_pic_find_pending_high_irqs(struct pic_softc *pic) { uint32_t pending; pending = read_mlmbreg(KIRKWOOD_MLMB_MICHR) & read_mlmbreg(KIRKWOOD_MLMB_MIRQIMHR); if (pending == 0) return 0; pic_mark_pending_sources(pic, 0, pending); return 1; } /* ARGSUSED */ static void kirkwood_pic_establish_irq(struct pic_softc *pic, struct intrsource *is) { /* Nothing */ } static void kirkwood_pic_source_name(struct pic_softc *pic, int irq, char *buf, size_t len) { strlcpy(buf, sources[pic->pic_irqbase + irq], len); } /* * Called with interrupts disabled */ static int kirkwood_find_pending_irqs(void) { uint32_t pending; pending = read_mlmbreg(KIRKWOOD_MLMB_MICLR) & read_mlmbreg(KIRKWOOD_MLMB_MIRQIMLR); if (pending == 0) return 0; return pic_mark_pending_sources(&kirkwood_pic_low, 0, pending); } /* * Clock functions */ void kirkwood_getclks(bus_addr_t iobase) { uint32_t reg; uint16_t model; #define MHz * 1000 * 1000 model = mvsoc_model(); if (model == MARVELL_KIRKWOOD_88F6281) mvTclk = 200 MHz; else /* 166MHz */ mvTclk = 166666667; reg = *(volatile uint32_t *)(iobase + KIRKWOOD_MPP_BASE + KIRKWOOD_MPP_SAMPLE_AT_RESET); if (model == MARVELL_KIRKWOOD_88F6180) { switch (reg & 0x0000001c) { case 0x00000014: mvPclk = 600 MHz; break; case 0x00000018: mvPclk = 800 MHz; break; default: panic("unknown mvPclk\n"); } mvSysclk = 200 MHz; } else { switch (reg & 0x0040001a) { case 0x00000008: mvPclk = 600 MHz; break; case 0x00400008: mvPclk = 800 MHz; break; case 0x0040000a: mvPclk = 1000 MHz; break; case 0x00000012: mvPclk = 1200 MHz; break; case 0x00000018: mvPclk = 1200 MHz; break; default: panic("unknown mvPclk\n"); } switch (reg & 0x000001e0) { case 0x00000060: mvSysclk = mvPclk * 2 / 5; break; case 0x00000080: mvSysclk = mvPclk * 1 / 3; break; case 0x000000c0: mvSysclk = mvPclk * 1 / 4; break; default: panic("unknown mvSysclk\n"); } } #undef MHz }