| 0,0 → 1,158 |
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| /* |
| * Copyright (c) 2009 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * 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. |
| */ |
| |
| /** @addtogroup obio |
| * @{ |
| */ |
| |
| /** |
| * @file obio.c |
| * @brief OBIO driver. |
| * |
| * OBIO is a short for on-board I/O. On UltraSPARC IIi and systems with U2P, |
| * there is a piece of the root PCI bus controller address space, which |
| * contains interrupt mapping and clear registers for all on-board devices. |
| * Although UltraSPARC IIi and U2P are different in general, these registers can |
| * be found at the same addresses. |
| */ |
| |
| #include <ipc/ipc.h> |
| #include <ipc/services.h> |
| #include <ipc/bus.h> |
| #include <ipc/ns.h> |
| #include <sysinfo.h> |
| #include <as.h> |
| #include <ddi.h> |
| #include <align.h> |
| #include <bool.h> |
| #include <errno.h> |
| #include <async.h> |
| #include <align.h> |
| #include <async.h> |
| #include <stdio.h> |
| #include <ipc/devmap.h> |
| |
| #define NAME "obio" |
| |
| #define OBIO_SIZE 0x1898 |
| |
| #define OBIO_IMR_BASE 0x200 |
| #define OBIO_IMR(ino) (OBIO_IMR_BASE + ((ino) & INO_MASK)) |
| |
| #define OBIO_CIR_BASE 0x300 |
| #define OBIO_CIR(ino) (OBIO_CIR_BASE + ((ino) & INO_MASK)) |
| |
| #define INO_MASK 0x1f |
| |
| static void *base_phys; |
| static volatile uint64_t *base_virt; |
| |
| /** Handle one connection to obio. |
| * |
| * @param iid Hash of the request that opened the connection. |
| * @param icall Call data of the request that opened the connection. |
| */ |
| static void obio_connection(ipc_callid_t iid, ipc_call_t *icall) |
| { |
| ipc_callid_t callid; |
| ipc_call_t call; |
| |
| /* |
| * Answer the first IPC_M_CONNECT_ME_TO call. |
| */ |
| ipc_answer_0(iid, EOK); |
| |
| while (1) { |
| int inr; |
| |
| callid = async_get_call(&call); |
| switch (IPC_GET_METHOD(call)) { |
| case BUS_CLEAR_INTERRUPT: |
| inr = IPC_GET_ARG1(call); |
| base_virt[OBIO_CIR(inr) & INO_MASK] = 0; |
| ipc_answer_0(callid, EOK); |
| break; |
| default: |
| ipc_answer_0(callid, EINVAL); |
| break; |
| } |
| } |
| } |
| |
| /** Initialize the OBIO driver. |
| * |
| * So far, the driver heavily depends on information provided by the kernel via |
| * sysinfo. In the future, there should be a standalone OBIO driver. |
| */ |
| static bool obio_init(void) |
| { |
| ipcarg_t phonead; |
| |
| base_phys = (void *) sysinfo_value("obio.base.physical"); |
| |
| if (!base_phys) { |
| printf(NAME ": no OBIO registers found\n"); |
| return false; |
| } |
| |
| base_virt = as_get_mappable_page(OBIO_SIZE); |
| |
| int flags = AS_AREA_READ | AS_AREA_WRITE; |
| int retval = physmem_map(base_phys, (void *) base_virt, |
| ALIGN_UP(OBIO_SIZE, PAGE_SIZE) >> PAGE_WIDTH, flags); |
| |
| if (retval < 0) { |
| printf(NAME ": Error mapping OBIO registers\n"); |
| return false; |
| } |
| |
| printf(NAME ": OBIO registers with base at %p\n", base_phys); |
| |
| async_set_client_connection(obio_connection); |
| ipc_connect_to_me(PHONE_NS, SERVICE_OBIO, 0, 0, &phonead); |
| |
| return true; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| printf(NAME ": HelenOS OBIO driver\n"); |
| |
| if (!obio_init()) |
| return -1; |
| |
| printf(NAME ": Accepting connections\n"); |
| async_manager(); |
| |
| /* Never reached */ |
| return 0; |
| } |
| |
| /** |
| * @} |
| */ |
| Property changes: |
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| Added: svn:mergeinfo |
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