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Diffstat (limited to 'arch/mips/netlogic/xlr/fmn.c')
| -rw-r--r-- | arch/mips/netlogic/xlr/fmn.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/arch/mips/netlogic/xlr/fmn.c b/arch/mips/netlogic/xlr/fmn.c deleted file mode 100644 index f90303f31967..000000000000 --- a/arch/mips/netlogic/xlr/fmn.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * Copyright (c) 2003-2012 Broadcom Corporation - * All Rights Reserved - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the Broadcom - * license below: - * - * 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 BROADCOM ``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 BROADCOM 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. - */ - -#include <linux/kernel.h> -#include <linux/irqreturn.h> -#include <linux/irq.h> -#include <linux/interrupt.h> - -#include <asm/mipsregs.h> -#include <asm/netlogic/interrupt.h> -#include <asm/netlogic/xlr/fmn.h> -#include <asm/netlogic/common.h> - -#define COP2_CC_INIT_CPU_DEST(dest, conf) \ -do { \ - nlm_write_c2_cc##dest(0, conf[(dest * 8) + 0]); \ - nlm_write_c2_cc##dest(1, conf[(dest * 8) + 1]); \ - nlm_write_c2_cc##dest(2, conf[(dest * 8) + 2]); \ - nlm_write_c2_cc##dest(3, conf[(dest * 8) + 3]); \ - nlm_write_c2_cc##dest(4, conf[(dest * 8) + 4]); \ - nlm_write_c2_cc##dest(5, conf[(dest * 8) + 5]); \ - nlm_write_c2_cc##dest(6, conf[(dest * 8) + 6]); \ - nlm_write_c2_cc##dest(7, conf[(dest * 8) + 7]); \ -} while (0) - -struct fmn_message_handler { - void (*action)(int, int, int, int, struct nlm_fmn_msg *, void *); - void *arg; -} msg_handlers[128]; - -/* - * FMN interrupt handler. We configure the FMN so that any messages in - * any of the CPU buckets will trigger an interrupt on the CPU. - * The message can be from any device on the FMN (like NAE/SAE/DMA). - * The source station id is used to figure out which of the registered - * handlers have to be called. - */ -static irqreturn_t fmn_message_handler(int irq, void *data) -{ - struct fmn_message_handler *hndlr; - int bucket, rv; - int size = 0, code = 0, src_stnid = 0; - struct nlm_fmn_msg msg; - uint32_t mflags, bkt_status; - - mflags = nlm_cop2_enable_irqsave(); - /* Disable message ring interrupt */ - nlm_fmn_setup_intr(irq, 0); - while (1) { - /* 8 bkts per core, [24:31] each bit represents one bucket - * Bit is Zero if bucket is not empty */ - bkt_status = (nlm_read_c2_status0() >> 24) & 0xff; - if (bkt_status == 0xff) - break; - for (bucket = 0; bucket < 8; bucket++) { - /* Continue on empty bucket */ - if (bkt_status & (1 << bucket)) - continue; - rv = nlm_fmn_receive(bucket, &size, &code, &src_stnid, - &msg); - if (rv != 0) - continue; - - hndlr = &msg_handlers[src_stnid]; - if (hndlr->action == NULL) - pr_warn("No msgring handler for stnid %d\n", - src_stnid); - else { - nlm_cop2_disable_irqrestore(mflags); - hndlr->action(bucket, src_stnid, size, code, - &msg, hndlr->arg); - mflags = nlm_cop2_enable_irqsave(); - } - } - } - /* Enable message ring intr, to any thread in core */ - nlm_fmn_setup_intr(irq, (1 << nlm_threads_per_core) - 1); - nlm_cop2_disable_irqrestore(mflags); - return IRQ_HANDLED; -} - -void xlr_percpu_fmn_init(void) -{ - struct xlr_fmn_info *cpu_fmn_info; - int *bucket_sizes; - uint32_t flags; - int id; - - BUG_ON(nlm_thread_id() != 0); - id = nlm_core_id(); - - bucket_sizes = xlr_board_fmn_config.bucket_size; - cpu_fmn_info = &xlr_board_fmn_config.cpu[id]; - flags = nlm_cop2_enable_irqsave(); - - /* Setup bucket sizes for the core. */ - nlm_write_c2_bucksize(0, bucket_sizes[id * 8 + 0]); - nlm_write_c2_bucksize(1, bucket_sizes[id * 8 + 1]); - nlm_write_c2_bucksize(2, bucket_sizes[id * 8 + 2]); - nlm_write_c2_bucksize(3, bucket_sizes[id * 8 + 3]); - nlm_write_c2_bucksize(4, bucket_sizes[id * 8 + 4]); - nlm_write_c2_bucksize(5, bucket_sizes[id * 8 + 5]); - nlm_write_c2_bucksize(6, bucket_sizes[id * 8 + 6]); - nlm_write_c2_bucksize(7, bucket_sizes[id * 8 + 7]); - - /* - * For sending FMN messages, we need credits on the destination - * bucket. Program the credits this core has on the 128 possible - * destination buckets. - * We cannot use a loop here, because the the first argument has - * to be a constant integer value. - */ - COP2_CC_INIT_CPU_DEST(0, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(1, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(2, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(3, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(4, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(5, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(6, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(7, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(8, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(9, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(10, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(11, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(12, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(13, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(14, cpu_fmn_info->credit_config); - COP2_CC_INIT_CPU_DEST(15, cpu_fmn_info->credit_config); - - /* enable FMN interrupts on this CPU */ - nlm_fmn_setup_intr(IRQ_FMN, (1 << nlm_threads_per_core) - 1); - nlm_cop2_disable_irqrestore(flags); -} - - -/* - * Register a FMN message handler with respect to the source station id - * @stnid: source station id - * @action: Handler function pointer - */ -int nlm_register_fmn_handler(int start_stnid, int end_stnid, - void (*action)(int, int, int, int, struct nlm_fmn_msg *, void *), - void *arg) -{ - int sstnid; - - for (sstnid = start_stnid; sstnid <= end_stnid; sstnid++) { - msg_handlers[sstnid].arg = arg; - smp_wmb(); - msg_handlers[sstnid].action = action; - } - pr_debug("Registered FMN msg handler for stnid %d-%d\n", - start_stnid, end_stnid); - return 0; -} - -void nlm_setup_fmn_irq(void) -{ - uint32_t flags; - - /* request irq only once */ - if (request_irq(IRQ_FMN, fmn_message_handler, IRQF_PERCPU, "fmn", NULL)) - pr_err("Failed to request irq %d (fmn)\n", IRQ_FMN); - - flags = nlm_cop2_enable_irqsave(); - nlm_fmn_setup_intr(IRQ_FMN, (1 << nlm_threads_per_core) - 1); - nlm_cop2_disable_irqrestore(flags); -} |