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Diffstat (limited to 'sys/arch/octeon/dev/obio.c')
| -rw-r--r-- | sys/arch/octeon/dev/obio.c | 668 |
1 files changed, 0 insertions, 668 deletions
diff --git a/sys/arch/octeon/dev/obio.c b/sys/arch/octeon/dev/obio.c deleted file mode 100644 index a5d9a627213..00000000000 --- a/sys/arch/octeon/dev/obio.c +++ /dev/null @@ -1,668 +0,0 @@ -/* $OpenBSD: obio.c,v 1.6 2010/11/23 18:46:29 syuu Exp $ */ - -/* - * Copyright (c) 2000-2004 Opsycon AB (www.opsycon.se) - * - * 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. - * - */ - -/* - * This is a obio driver. - * It handles configuration of all devices on the processor bus except UART. - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/conf.h> -#include <sys/malloc.h> -#include <sys/device.h> -#include <sys/proc.h> - -#include <mips64/archtype.h> - -#include <machine/autoconf.h> -#include <machine/intr.h> -#include <machine/atomic.h> - -#include <octeon/dev/octeonreg.h> -#include <octeon/dev/obiovar.h> - -#define OBIO_NINTS 64 - -int obiomatch(struct device *, void *, void *); -void obioattach(struct device *, struct device *, void *); -int obioprint(void *, const char *); -int obiosubmatch(struct device *, void *, void *); - -void obio_intr_makemasks(void); -void obio_splx(int); -uint32_t obio_iointr(uint32_t, struct trap_frame *); -uint32_t obio_aux(uint32_t, struct trap_frame *); -int obio_iointr_skip(struct intrhand *, uint64_t, uint64_t); -void obio_setintrmask(int); - -u_int8_t obio_read_1(bus_space_tag_t, bus_space_handle_t, bus_size_t); -u_int16_t obio_read_2(bus_space_tag_t, bus_space_handle_t, bus_size_t); -u_int32_t obio_read_4(bus_space_tag_t, bus_space_handle_t, bus_size_t); -u_int64_t obio_read_8(bus_space_tag_t, bus_space_handle_t, bus_size_t); - -void obio_write_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, - u_int8_t); -void obio_write_2(bus_space_tag_t, bus_space_handle_t, bus_size_t, - u_int16_t); -void obio_write_4(bus_space_tag_t, bus_space_handle_t, bus_size_t, - u_int32_t); -void obio_write_8(bus_space_tag_t, bus_space_handle_t, bus_size_t, - u_int64_t); - -void obio_read_raw_2(bus_space_tag_t, bus_space_handle_t, bus_addr_t, - u_int8_t *, bus_size_t); -void obio_write_raw_2(bus_space_tag_t, bus_space_handle_t, bus_addr_t, - const u_int8_t *, bus_size_t); -void obio_read_raw_4(bus_space_tag_t, bus_space_handle_t, bus_addr_t, - u_int8_t *, bus_size_t); -void obio_write_raw_4(bus_space_tag_t, bus_space_handle_t, bus_addr_t, - const u_int8_t *, bus_size_t); -void obio_read_raw_8(bus_space_tag_t, bus_space_handle_t, bus_addr_t, - u_int8_t *, bus_size_t); -void obio_write_raw_8(bus_space_tag_t, bus_space_handle_t, bus_addr_t, - const u_int8_t *, bus_size_t); - -int obio_space_map(bus_space_tag_t, bus_addr_t, bus_size_t, int, - bus_space_handle_t *); -void obio_space_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t); -int obio_space_region(bus_space_tag_t, bus_space_handle_t, bus_size_t, - bus_size_t, bus_space_handle_t *); - -void *obio_space_vaddr(bus_space_tag_t, bus_space_handle_t); - -bus_addr_t obio_pa_to_device(paddr_t); -paddr_t obio_device_to_pa(bus_addr_t); - -struct cfattach obio_ca = { - sizeof(struct device), obiomatch, obioattach -}; - -struct cfdriver obio_cd = { - NULL, "obio", DV_DULL -}; - -bus_space_t obio_tag = { - PHYS_TO_XKPHYS(0, CCA_NC), - NULL, - obio_read_1, obio_write_1, - obio_read_2, obio_write_2, - obio_read_4, obio_write_4, - obio_read_8, obio_write_8, - obio_read_raw_2, obio_write_raw_2, - obio_read_raw_4, obio_write_raw_4, - obio_read_raw_8, obio_write_raw_8, - obio_space_map, obio_space_unmap, obio_space_region, - obio_space_vaddr -}; - -bus_space_handle_t obio_h; - -struct machine_bus_dma_tag obio_bus_dma_tag = { - NULL, /* _cookie */ - _dmamap_create, - _dmamap_destroy, - _dmamap_load, - _dmamap_load_mbuf, - _dmamap_load_uio, - _dmamap_load_raw, - _dmamap_load_buffer, - _dmamap_unload, - _dmamap_sync, - _dmamem_alloc, - _dmamem_free, - _dmamem_map, - _dmamem_unmap, - _dmamem_mmap, - obio_pa_to_device, - obio_device_to_pa, - 0 -}; - -struct intrhand *obio_intrhand[OBIO_NINTS]; - -#define INTPRI_CIU_0 (INTPRI_CLOCK + 1) - -uint64_t obio_intem[MAXCPUS]; -uint64_t obio_imask[MAXCPUS][NIPLS]; - -/* - * List of obio child devices. - */ - -#define OBIODEV(name, addr, i) \ - { name, &obio_tag, &obio_tag, &obio_bus_dma_tag, addr, i } -struct obio_attach_args obio_children[] = { - OBIODEV("octcf", OCTEON_CF_BASE, 0), - OBIODEV("pcibus", 0, 0), -}; -#undef OBIODEV - -/* - * Match bus only to targets which have this bus. - */ -int -obiomatch(struct device *parent, void *match, void *aux) -{ - return (1); -} - -int -obioprint(void *aux, const char *obio) -{ - struct obio_attach_args *oba = aux; - - if (obio != NULL) - printf("%s at %s", oba->oba_name, obio); - - if (oba->oba_baseaddr != 0) - printf(" base 0x%llx", oba->oba_baseaddr); - if (oba->oba_intr >= 0) - printf(" irq %d", oba->oba_intr); - - return (UNCONF); -} - -int -obiosubmatch(struct device *parent, void *vcf, void *args) -{ - struct cfdata *cf = vcf; - struct obio_attach_args *oba = args; - - if (strcmp(cf->cf_driver->cd_name, oba->oba_name) != 0) - return 0; - - if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != (int)oba->oba_baseaddr) - return 0; - - return (*cf->cf_attach->ca_match)(parent, cf, oba); -} - -void -obioattach(struct device *parent, struct device *self, void *aux) -{ - uint i; - - /* - * Map and setup CRIME control registers. - */ - if (bus_space_map(&obio_tag, OCTEON_CIU_BASE, OCTEON_CIU_SIZE, 0, - &obio_h)) { - printf(": can't map CIU control registers\n"); - return; - } - - printf("\n"); - - obio_intr_init(); - - set_intr(INTPRI_CIU_0, CR_INT_0, obio_iointr); - register_splx_handler(obio_splx); - - /* - * Attach subdevices. - */ - for (i = 0; i < nitems(obio_children); i++) - config_found_sm(self, obio_children + i, - obioprint, obiosubmatch); -} - -/* - * Bus access primitives. These are really ugly... - */ - -u_int8_t -obio_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) -{ - return (u_int8_t)*(volatile uint8_t *)(h + o); -} - -u_int16_t -obio_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) -{ - return (u_int16_t)*(volatile uint16_t *)(h + o); -} - -u_int32_t -obio_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) -{ - return (u_int32_t)*(volatile u_int32_t *)(h + o); -} - -u_int64_t -obio_read_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) -{ - return *(volatile u_int64_t *)(h + o); -} - -void -obio_write_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, u_int8_t v) -{ - *(volatile uint8_t *)(h + o) = (volatile uint8_t)v; -} - -void -obio_write_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, u_int16_t v) -{ - *(volatile uint16_t *)(h + o) = (volatile uint16_t)v; -} - -void -obio_write_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, u_int32_t v) -{ - *(volatile u_int32_t *)(h + o) = (volatile uint32_t)v; -} - -void -obio_write_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, u_int64_t v) -{ - *(volatile u_int64_t *)(h + o) = v; -} - -void -obio_read_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o, - u_int8_t *buf, bus_size_t len) -{ - volatile uint16_t *addr = (volatile uint16_t *)(h + o); - len >>= 1; - while (len-- != 0) { - *(uint16_t *)buf = *addr; - buf += 2; - } -} - -void -obio_write_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o, - const u_int8_t *buf, bus_size_t len) -{ - volatile uint16_t *addr = (volatile uint16_t *)(h + o); - len >>= 1; - while (len-- != 0) { - *addr = *(uint16_t *)buf; - buf += 2; - } -} - -void -obio_read_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o, - u_int8_t *buf, bus_size_t len) -{ - volatile uint32_t *addr = (volatile uint32_t *)(h + o); - len >>= 2; - while (len-- != 0) { - *(uint32_t *)buf = *addr; - buf += 4; - } -} - -void -obio_write_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o, - const u_int8_t *buf, bus_size_t len) -{ - volatile uint32_t *addr = (volatile uint32_t *)(h + o); - len >>= 2; - while (len-- != 0) { - *addr = *(uint32_t *)buf; - buf += 4; - } -} - -void -obio_read_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o, - u_int8_t *buf, bus_size_t len) -{ - volatile uint64_t *addr = (volatile uint64_t *)(h + o); - len >>= 3; - while (len-- != 0) { - *(uint64_t *)buf = *addr; - buf += 8; - } -} - -void -obio_write_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o, - const u_int8_t *buf, bus_size_t len) -{ - volatile uint64_t *addr = (volatile uint64_t *)(h + o); - len >>= 3; - while (len-- != 0) { - *addr = *(uint64_t *)buf; - buf += 8; - } -} - -int -obio_space_map(bus_space_tag_t t, bus_addr_t offs, bus_size_t size, - int flags, bus_space_handle_t *bshp) -{ - if (ISSET(flags, BUS_SPACE_MAP_KSEG0)) { - *bshp = PHYS_TO_CKSEG0(offs); - return 0; - } - if (ISSET(flags, BUS_SPACE_MAP_CACHEABLE)) - offs += - PHYS_TO_XKPHYS(0, CCA_CACHED) - PHYS_TO_XKPHYS(0, CCA_NC); - *bshp = t->bus_base + offs; - return 0; -} - -void -obio_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size) -{ -} - -int -obio_space_region(bus_space_tag_t t, bus_space_handle_t bsh, - bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp) -{ - *nbshp = bsh + offset; - return (0); -} - -void * -obio_space_vaddr(bus_space_tag_t t, bus_space_handle_t h) -{ - return (void *)h; -} - -/* - * Obio bus_dma helpers. - */ - -bus_addr_t -obio_pa_to_device(paddr_t pa) -{ - return (bus_addr_t)pa; -} - -paddr_t -obio_device_to_pa(bus_addr_t addr) -{ - return (paddr_t)addr; -} - -/* - * Obio interrupt handler driver. - */ - -void -obio_intr_init(void) -{ - int cpuid = cpu_number(); - bus_space_write_8(&obio_tag, obio_h, CIU_IP2_EN0(cpuid), 0); - bus_space_write_8(&obio_tag, obio_h, CIU_IP3_EN0(cpuid), 0); - bus_space_write_8(&obio_tag, obio_h, CIU_IP2_EN1(cpuid), 0); - bus_space_write_8(&obio_tag, obio_h, CIU_IP3_EN1(cpuid), 0); -} - -/* - * Establish an interrupt handler called from the dispatcher. - * The interrupt function established should return zero if there was nothing - * to serve (no int) and non-zero when an interrupt was serviced. - * - * Interrupts are numbered from 1 and up where 1 maps to HW int 0. - * XXX There is no reason to keep this... except for hardcoded interrupts - * XXX in kernel configuration files... - */ -void * -obio_intr_establish(int irq, int level, - int (*ih_fun)(void *), void *ih_arg, const char *ih_what) -{ - int cpuid = cpu_number(); - struct intrhand **p, *q, *ih; - int s; - -#ifdef DIAGNOSTIC - if (irq >= OBIO_NINTS || irq < 0) - panic("intr_establish: illegal irq %d", irq); -#endif - - ih = malloc(sizeof *ih, M_DEVBUF, M_NOWAIT); - if (ih == NULL) - return NULL; - - ih->ih_next = NULL; - ih->ih_fun = ih_fun; - ih->ih_arg = ih_arg; - ih->ih_level = level; - ih->ih_irq = irq; - evcount_attach(&ih->ih_count, ih_what, (void *)&ih->ih_irq); - - s = splhigh(); - - /* - * Figure out where to put the handler. - * This is O(N^2), but we want to preserve the order, and N is - * generally small. - */ - for (p = &obio_intrhand[irq]; (q = *p) != NULL; - p = (struct intrhand **)&q->ih_next) - ; - *p = ih; - - obio_intem[cpuid] |= 1UL << irq; - obio_intr_makemasks(); - - splx(s); /* causes hw mask update */ - - return (ih); -} - -void -obio_intr_disestablish(void *ih) -{ - /* XXX */ - panic("%s not implemented", __func__); -} - -void -obio_splx(int newipl) -{ - struct cpu_info *ci = curcpu(); - - /* Update masks to new ipl. Order highly important! */ - __asm__ (".set noreorder\n"); - ci->ci_ipl = newipl; - __asm__ ("sync\n\t.set reorder\n"); - if (CPU_IS_PRIMARY(ci)) - obio_setintrmask(newipl); - /* If we still have softints pending trigger processing. */ - if (ci->ci_softpending != 0 && newipl < IPL_SOFTINT) - setsoftintr0(); -} - -/* - * Recompute interrupt masks. - */ -void -obio_intr_makemasks() -{ - int cpuid = cpu_number(); - int irq, level; - struct intrhand *q; - uint intrlevel[OBIO_NINTS]; - - /* First, figure out which levels each IRQ uses. */ - for (irq = 0; irq < OBIO_NINTS; irq++) { - uint levels = 0; - for (q = (struct intrhand *)obio_intrhand[irq]; q != NULL; - q = q->ih_next) - levels |= 1 << q->ih_level; - intrlevel[irq] = levels; - } - - /* - * Then figure out which IRQs use each level. - * Note that we make sure never to overwrite imask[IPL_HIGH], in - * case an interrupt occurs during intr_disestablish() and causes - * an unfortunate splx() while we are here recomputing the masks. - */ - for (level = IPL_NONE; level < NIPLS; level++) { - uint64_t irqs = 0; - for (irq = 0; irq < OBIO_NINTS; irq++) - if (intrlevel[irq] & (1 << level)) - irqs |= 1UL << irq; - obio_imask[cpuid][level] = irqs; - } - /* - * There are tty, network and disk drivers that use free() at interrupt - * time, so vm > (tty | net | bio). - * - * Enforce a hierarchy that gives slow devices a better chance at not - * dropping data. - */ - obio_imask[cpuid][IPL_NET] |= obio_imask[cpuid][IPL_BIO]; - obio_imask[cpuid][IPL_TTY] |= obio_imask[cpuid][IPL_NET]; - obio_imask[cpuid][IPL_VM] |= obio_imask[cpuid][IPL_TTY]; - obio_imask[cpuid][IPL_CLOCK] |= obio_imask[cpuid][IPL_VM]; - obio_imask[cpuid][IPL_HIGH] |= obio_imask[cpuid][IPL_CLOCK]; - obio_imask[cpuid][IPL_IPI] |= obio_imask[cpuid][IPL_HIGH]; - - /* - * These are pseudo-levels. - */ - obio_imask[cpuid][IPL_NONE] = 0; -} - -/* - * Interrupt dispatcher. - */ -uint32_t -obio_iointr(uint32_t hwpend, struct trap_frame *frame) -{ - struct cpu_info *ci = curcpu(); - int cpuid = cpu_number(); - uint64_t imr, isr, mask; - int ipl; - int bit; - struct intrhand *ih; - int rc; - uint64_t sum0 = CIU_IP2_SUM0(cpuid); - uint64_t en0 = CIU_IP2_EN0(cpuid); - - isr = bus_space_read_8(&obio_tag, obio_h, sum0); - imr = bus_space_read_8(&obio_tag, obio_h, en0); - bit = 63; - - isr &= imr; - if (isr == 0) - return 0; /* not for us */ - - /* - * Mask all pending interrupts. - */ - bus_space_write_8(&obio_tag, obio_h, en0, imr & ~isr); - - /* - * If interrupts are spl-masked, mask them and wait for splx() - * to reenable them when necessary. - */ - if ((mask = isr & obio_imask[cpuid][frame->ipl]) != 0) { - isr &= ~mask; - imr &= ~mask; - } - - /* - * Now process allowed interrupts. - */ - if (isr != 0) { - int lvl, bitno; - uint64_t tmpisr; - - __asm__ (".set noreorder\n"); - ipl = ci->ci_ipl; - __asm__ ("sync\n\t.set reorder\n"); - - /* Service higher level interrupts first */ - for (lvl = NIPLS - 1; lvl != IPL_NONE; lvl--) { - tmpisr = isr & (obio_imask[cpuid][lvl] ^ obio_imask[cpuid][lvl - 1]); - if (tmpisr == 0) - continue; - for (bitno = bit, mask = 1UL << bitno; mask != 0; - bitno--, mask >>= 1) { - if ((tmpisr & mask) == 0) - continue; - - rc = 0; - for (ih = (struct intrhand *)obio_intrhand[bitno]; - ih != NULL; - ih = ih->ih_next) { -#ifdef MULTIPROCESSOR - u_int32_t sr; -#endif - splraise(ih->ih_level); -#ifdef MULTIPROCESSOR - if (ih->ih_level < IPL_IPI) { - sr = getsr(); - ENABLEIPI(); - if (ipl < IPL_SCHED) - __mp_lock(&kernel_lock); - } -#endif - if ((*ih->ih_fun)(ih->ih_arg) != 0) { - rc = 1; - atomic_add_uint64(&ih->ih_count.ec_count, 1); - } -#ifdef MULTIPROCESSOR - if (ih->ih_level < IPL_IPI) { - if (ipl < IPL_SCHED) - __mp_unlock(&kernel_lock); - setsr(sr); - } -#endif - __asm__ (".set noreorder\n"); - ci->ci_ipl = ipl; - __asm__ ("sync\n\t.set reorder\n"); - } - if (rc == 0) - printf("spurious crime interrupt %d\n", bitno); - - isr ^= mask; - if ((tmpisr ^= mask) == 0) - break; - } - } - - /* - * Reenable interrupts which have been serviced. - */ - bus_space_write_8(&obio_tag, obio_h, en0, imr); - } - - return hwpend; -} - -void -obio_setintrmask(int level) -{ - int cpuid = cpu_number(); - - bus_space_write_8(&obio_tag, obio_h, CIU_IP2_EN0(cpuid), - obio_intem[cpuid] & ~obio_imask[cpuid][level]); -} |