Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932783AbaD1Pa0 (ORCPT ); Mon, 28 Apr 2014 11:30:26 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:50723 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752665AbaD1PPu (ORCPT ); Mon, 28 Apr 2014 11:15:50 -0400 From: Nishanth Menon To: Tony Lindgren , Santosh Shilimkar , Sricharan R , Sekhar Nori , Rajendra Nayak CC: Peter Ujfalusi , , , , , Subject: [PATCH V3 13/20] bus: omap_l3_noc: make error reporting and handling common Date: Mon, 28 Apr 2014 10:14:53 -0500 Message-ID: <1398698101-25513-14-git-send-email-nm@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1398698101-25513-1-git-send-email-nm@ti.com> References: <1397492726-17203-1-git-send-email-nm@ti.com> <1398698101-25513-1-git-send-email-nm@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The logic between handling CUSTOM_ERROR and STANDARD_ERROR is just the reporting style. So make it generic, simplify and standardize the reporting with both master and target information printed to log. Handle the register address difference for master code for standard error and custom error as well. While at it, fix a minor indentation error. Signed-off-by: Nishanth Menon Acked-by: Santosh Shilimkar Acked-by: Peter Ujfalusi Tested-by: Darren Etheridge --- V3: no change drivers/bus/omap_l3_noc.c | 72 ++++++++++++++++++++++++++++----------------- drivers/bus/omap_l3_noc.h | 3 +- 2 files changed, 47 insertions(+), 28 deletions(-) diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c index 8a1926d..42e4114 100644 --- a/drivers/bus/omap_l3_noc.c +++ b/drivers/bus/omap_l3_noc.c @@ -62,6 +62,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) struct l3_target_data *l3_targ_inst; struct l3_flagmux_data *flag_mux; struct l3_masters_data *master; + char *err_description; + char err_string[30] = { 0 }; /* Get the Type of interrupt */ inttype = irq == l3->app_irq ? L3_APPLICATION_ERROR : L3_DEBUG_ERROR; @@ -78,6 +80,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) /* Get the corresponding error and analyse */ if (err_reg) { + bool std_err = true; + /* Identify the source from control status register */ err_src = __ffs(err_reg); @@ -123,47 +127,61 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) l3_targ_stderr = l3_targ_base + L3_TARG_STDERRLOG_MAIN; l3_targ_slvofslsb = l3_targ_base + L3_TARG_STDERRLOG_SLVOFSLSB; - l3_targ_mstaddr = l3_targ_base + - L3_TARG_STDERRLOG_MSTADDR; std_err_main = readl_relaxed(l3_targ_stderr); - /* STDERRLOG_MSTADDR Stores the NTTP master address. */ - masterid = (readl_relaxed(l3_targ_mstaddr) & - l3->mst_addr_mask) >> - __ffs(l3->mst_addr_mask); - switch (std_err_main & CUSTOM_ERROR) { case STANDARD_ERROR: - WARN(true, "L3 standard error: TARGET:%s at address 0x%x\n", - target_name, - readl_relaxed(l3_targ_slvofslsb)); - /* clear the std error log*/ - clear = std_err_main | CLEAR_STDERR_LOG; - writel_relaxed(clear, l3_targ_stderr); + err_description = "Standard"; + snprintf(err_string, sizeof(err_string), + ": At Address: 0x%08X ", + readl_relaxed(l3_targ_slvofslsb)); + + l3_targ_mstaddr = l3_targ_base + + L3_TARG_STDERRLOG_MSTADDR; break; case CUSTOM_ERROR: - for (k = 0, master = l3->l3_masters; - k < l3->num_masters; k++, master++) { - if (masterid == master->id) { - master_name = master->name; - break; - } - } - WARN(true, "L3 custom error: MASTER:%s TARGET:%s\n", - master_name, target_name); - /* clear the std error log*/ - clear = std_err_main | CLEAR_STDERR_LOG; - writel_relaxed(clear, l3_targ_stderr); + err_description = "Custom"; + + l3_targ_mstaddr = l3_targ_base + + L3_TARG_STDERRLOG_CINFO_MSTADDR; break; default: + std_err = false; /* Nothing to be handled here as of now */ break; } - /* Error found so break the for loop */ - break; + + if (!std_err) + break; + + /* STDERRLOG_MSTADDR Stores the NTTP master address. */ + masterid = (readl_relaxed(l3_targ_mstaddr) & + l3->mst_addr_mask) >> + __ffs(l3->mst_addr_mask); + + for (k = 0, master = l3->l3_masters; + k < l3->num_masters; k++, master++) { + if (masterid == master->id) { + master_name = master->name; + break; + } + } + + WARN(true, + "%s:L3 %s Error: MASTER %s TARGET %s%s\n", + dev_name(l3->dev), + err_description, + master_name, target_name, + err_string); + /* clear the std error log*/ + clear = std_err_main | CLEAR_STDERR_LOG; + writel_relaxed(clear, l3_targ_stderr); + + /* Error found so break the for loop */ + break; } } return IRQ_HANDLED; diff --git a/drivers/bus/omap_l3_noc.h b/drivers/bus/omap_l3_noc.h index ba86924..ea2f51c 100644 --- a/drivers/bus/omap_l3_noc.h +++ b/drivers/bus/omap_l3_noc.h @@ -29,8 +29,9 @@ /* L3 TARG register offsets */ #define L3_TARG_STDERRLOG_MAIN 0x48 +#define L3_TARG_STDERRLOG_MSTADDR 0x50 #define L3_TARG_STDERRLOG_SLVOFSLSB 0x5c -#define L3_TARG_STDERRLOG_MSTADDR 0x68 +#define L3_TARG_STDERRLOG_CINFO_MSTADDR 0x68 #define L3_FLAGMUX_REGERR0 0xc #define L3_FLAGMUX_MASK0 0x8 -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/