From patchwork Sat Jan 26 02:45:22 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Tivy, Robert" X-Patchwork-Id: 2049311 Return-Path: X-Original-To: patchwork-davinci@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from devils.ext.ti.com (devils.ext.ti.com [198.47.26.153]) by patchwork1.kernel.org (Postfix) with ESMTP id 0AFAE3FD1A for ; Sat, 26 Jan 2013 02:50:28 +0000 (UTC) Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id r0Q2kgvP021281; Fri, 25 Jan 2013 20:46:42 -0600 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id r0Q2kgSb005835; Fri, 25 Jan 2013 20:46:42 -0600 Received: from dlelxv24.itg.ti.com (172.17.1.199) by dfle72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.1.323.3; Fri, 25 Jan 2013 20:46:42 -0600 Received: from linux.omap.com (dlelxs01.itg.ti.com [157.170.227.31]) by dlelxv24.itg.ti.com (8.13.8/8.13.8) with ESMTP id r0Q2kgUB027078; Fri, 25 Jan 2013 20:46:42 -0600 Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id 43CB780628; Fri, 25 Jan 2013 20:46:42 -0600 (CST) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dlelxv30.itg.ti.com (dlelxv30.itg.ti.com [172.17.2.17]) by linux.omap.com (Postfix) with ESMTP id 2BE5280628 for ; Fri, 25 Jan 2013 20:45:48 -0600 (CST) Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id r0Q2jmQs003394; Fri, 25 Jan 2013 20:45:48 -0600 Received: from dlelxv23.itg.ti.com (172.17.1.198) by dfle73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.1.323.3; Fri, 25 Jan 2013 20:45:47 -0600 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlelxv23.itg.ti.com (8.13.8/8.13.8) with ESMTP id r0Q2jlCS002669; Fri, 25 Jan 2013 20:45:47 -0600 Received: from sanblnx02.sanb.design.ti.com (sanblnx02.sanb.design.ti.com [146.252.160.81]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id r0Q2jlV02818; Fri, 25 Jan 2013 20:45:47 -0600 (CST) Received: from sanblnx02.sanb.design.ti.com (localhost [127.0.0.1]) by sanblnx02.sanb.design.ti.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id r0Q2jjWQ017992; Fri, 25 Jan 2013 18:45:45 -0800 Received: (from a0783933@localhost) by sanblnx02.sanb.design.ti.com (8.13.6/8.13.6/Submit) id r0Q2jjhG017989; Fri, 25 Jan 2013 18:45:45 -0800 From: Robert Tivy To: , , , , , , , Subject: [PATCH v6 2/2] ARM: davinci: Remoteproc platform device creation data/code Date: Fri, 25 Jan 2013 18:45:22 -0800 Message-ID: <1359168322-17733-3-git-send-email-rtivy@ti.com> X-Mailer: git-send-email 1.7.9.4 In-Reply-To: <1359168322-17733-1-git-send-email-rtivy@ti.com> References: <1359168322-17733-1-git-send-email-rtivy@ti.com> MIME-Version: 1.0 X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: Errors-To: davinci-linux-open-source-bounces@linux.davincidsp.com Added a new remoteproc platform device for DA8XX. Contains CMA-based reservation of physical memory block. A new kernel command-line parameter has been added to allow boot-time specification of the physical memory block. diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 363e348..f7ba70f3 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -44,6 +44,7 @@ parameter is applicable: AVR32 AVR32 architecture is enabled. AX25 Appropriate AX.25 support is enabled. BLACKFIN Blackfin architecture is enabled. + CMA Contiguous Memory Area support is enabled. DRM Direct Rendering Management support is enabled. DYNAMIC_DEBUG Build in debug messages and enable them at runtime EDD BIOS Enhanced Disk Drive Services (EDD) is enabled @@ -2634,6 +2635,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Useful for devices that are detected asynchronously (e.g. USB and MMC devices). + rproc_mem=nn[KMG][@address] + [KNL,ARM,CMA] Remoteproc physical memory block. + Memory area to be used by remote processor image, + managed by CMA. + rw [KNL] Mount root device read-write on boot S [KNL] Run init in single mode diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c index fb2f51b..a455e5c 100644 --- a/arch/arm/mach-davinci/devices-da8xx.c +++ b/arch/arm/mach-davinci/devices-da8xx.c @@ -12,7 +12,7 @@ */ #include #include -#include +#include #include #include #include @@ -706,6 +706,96 @@ int __init da850_register_mmcsd1(struct davinci_mmc_config *config) } #endif +static struct resource da8xx_rproc_resources[] = { + { /* DSP boot address */ + .start = DA8XX_SYSCFG0_BASE + DA8XX_HOST1CFG_REG, + .end = DA8XX_SYSCFG0_BASE + DA8XX_HOST1CFG_REG + 3, + .flags = IORESOURCE_MEM, + }, + { /* DSP interrupt registers */ + .start = DA8XX_SYSCFG0_BASE + DA8XX_CHIPSIG_REG, + .end = DA8XX_SYSCFG0_BASE + DA8XX_CHIPSIG_REG + 7, + .flags = IORESOURCE_MEM, + }, + { /* dsp irq */ + .start = IRQ_DA8XX_CHIPINT0, + .end = IRQ_DA8XX_CHIPINT0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device da8xx_dsp = { + .name = "davinci-rproc", + .id = 0, + .dev = { + .coherent_dma_mask = DMA_BIT_MASK(32), + }, + .num_resources = ARRAY_SIZE(da8xx_rproc_resources), + .resource = da8xx_rproc_resources, +}; + +#if IS_ENABLED(CONFIG_DA8XX_REMOTEPROC) + +static phys_addr_t rproc_base __initdata; +static unsigned long rproc_size __initdata; + +static int __init early_rproc_mem(char *p) +{ + char *endp; + + if (p == NULL) + return 0; + + rproc_size = memparse(p, &endp); + if (*endp == '@') + rproc_base = memparse(endp + 1, NULL); + + return 0; +} +early_param("rproc_mem", early_rproc_mem); + +void __init da8xx_rproc_reserve_cma(void) +{ + int ret; + + if (!rproc_base || !rproc_size) { + pr_err("%s: 'rproc_mem=nn@address' badly specified\n" + " 'nn' and 'address' must both be non-zero\n", + __func__); + + return; + } + + pr_info("%s: reserving 0x%lx @ 0x%lx...\n", + __func__, rproc_size, (unsigned long)rproc_base); + + ret = dma_declare_contiguous(&da8xx_dsp.dev, rproc_size, rproc_base, 0); + if (ret) + pr_err("%s: dma_declare_contiguous failed %d\n", __func__, ret); +} + +#else + +void __init da8xx_rproc_reserve_cma(void) +{ +} + +#endif + +int __init da8xx_register_rproc(void) +{ + int ret; + + ret = platform_device_register(&da8xx_dsp); + if (ret) { + pr_err("%s: platform_device_register: %d\n", __func__, ret); + + return ret; + } + + return 0; +}; + static struct resource da8xx_rtc_resources[] = { { .start = DA8XX_RTC_BASE, diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h index 700d311..1fcb106 100644 --- a/arch/arm/mach-davinci/include/mach/da8xx.h +++ b/arch/arm/mach-davinci/include/mach/da8xx.h @@ -54,6 +54,8 @@ extern unsigned int da850_max_speed; #define DA8XX_SYSCFG0_BASE (IO_PHYS + 0x14000) #define DA8XX_SYSCFG0_VIRT(x) (da8xx_syscfg0_base + (x)) #define DA8XX_JTAG_ID_REG 0x18 +#define DA8XX_HOST1CFG_REG 0x44 +#define DA8XX_CHIPSIG_REG 0x174 #define DA8XX_CFGCHIP0_REG 0x17c #define DA8XX_CFGCHIP2_REG 0x184 #define DA8XX_CFGCHIP3_REG 0x188 @@ -105,6 +107,9 @@ int __init da850_register_vpif_display int __init da850_register_vpif_capture (struct vpif_capture_config *capture_config); void da8xx_restart(char mode, const char *cmd); +void da8xx_rproc_reserve_cma(void); +int da8xx_register_rproc(void); + extern struct platform_device da8xx_serial_device; extern struct emac_platform_data da8xx_emac_pdata;