From patchwork Thu Jul 25 13:56:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814841 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E28F519CCF4 for ; Thu, 25 Jul 2024 14:05:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916326; cv=none; b=JEIlVnEMPemkcATW19sbgYe5XcDtLstV1RWy1DO80f4zAY6EnjmgbJnutpJRSdgyY/jYkDvazyZhN3C2bDNdqeSVEbtsSzDRImv0ecXwKjWxpLrqgEo4rYU7hbLVw9oCjioL5D5ywkpQ5N0OR3v+hVKcjKddGVy4sTATLU1H1rc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916326; c=relaxed/simple; bh=L/M6iqafBP4wm17JP475sULHtFDw/jE4bu8Pln8/FVE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=NQdtIIESkBUoeF45sz4dpFmwAi86ycS0Zg3+SvOc4k5QYKvjyojXK+obmb/T+1UjdoCipOrMP+4Anfl4Y3xaeU0dD7KRaEW4Oa2tp6hqtau+klmQHHlaBan1Z5k6LyOZy3xjmM9635o5VXPPrsEfkYfaXIWSqj4j2sBBqWdcvVo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=S3qU/79i; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="S3qU/79i" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721916325; x=1753452325; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=L/M6iqafBP4wm17JP475sULHtFDw/jE4bu8Pln8/FVE=; b=S3qU/79i0a7q+L3t9mNZQmWskcuj4wW5bstaDuJmFC/c4eh99mQVl1Qw S1bh3vhD49+/h1It1QknpKpA1nQjvhRYcQOcDkWsZlUeaBcgtOAFwU6RS BM9hT8Sv4fLxJ/2UOVA7daKadj6zgbs/acUfzXMbG13yjxM3ejxMrGCWU 5Qf6HTIfw+wOi72NfVDNWym6dywvZH0bcS5KiMxbKLncIYYtgURqzWf0j 7rRA5nNjvP8KhQM0bNPbzFHUxb6uOS8HqULvQy37zCOMNOW3hlh0oo5Bd Zw6LK0ip3eyVMp1r8JS/vJAfwbsTnlFv5XHgDgV2X9S+0HKl0x4Nk2NOT A==; X-CSE-ConnectionGUID: ACu3KmwTR9uRbY+G8CYkfQ== X-CSE-MsgGUID: hMh5ZgLlT7eVCIfd+uDQEw== X-IronPort-AV: E=McAfee;i="6700,10204,11144"; a="19504723" X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="19504723" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:25 -0700 X-CSE-ConnectionGUID: SLnsvoYFSXeC9Q8IvOtfSA== X-CSE-MsgGUID: tNm/PPCeRmmZ2cQY/nA13A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007702" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:18 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 01/12] spi: add driver for intel graphics on-die spi device Date: Thu, 25 Jul 2024 16:56:46 +0300 Message-Id: <20240725135657.1061836-2-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add auxiliary driver for intel discrete graphics on-die spi device. CC: Rodrigo Vivi CC: Lucas De Marchi Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- MAINTAINERS | 7 ++ drivers/spi/Kconfig | 11 +++ drivers/spi/Makefile | 1 + drivers/spi/spi-intel-dg.c | 142 +++++++++++++++++++++++++++++++ include/linux/intel_dg_spi_aux.h | 27 ++++++ 5 files changed, 188 insertions(+) create mode 100644 drivers/spi/spi-intel-dg.c create mode 100644 include/linux/intel_dg_spi_aux.h diff --git a/MAINTAINERS b/MAINTAINERS index 082483b40fac..90e06701f988 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11003,6 +11003,13 @@ L: linux-kernel@vger.kernel.org S: Supported F: arch/x86/include/asm/intel-family.h +INTEL DISCRETE GRAPHIC SPI FLASH DRIVER +M: Alexander Usyskin +L: linux-spi@vger.kernel.org +S: Supported +F: drivers/spi/spi-intel-dg.c +F: include/linux/intel_dg_spi_aux.h + INTEL DRM DISPLAY FOR XE AND I915 DRIVERS M: Jani Nikula M: Rodrigo Vivi diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index a2c99ff33e0a..ad6e74ff3223 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -518,6 +518,17 @@ config SPI_INTEL_PLATFORM To compile this driver as a module, choose M here: the module will be called spi-intel-platform. +config SPI_INTEL_DG + tristate "Intel Discrete Graphic SPI flash driver" + depends on AUXILIARY_BUS || COMPILE_TEST + depends on MTD + help + This enables support for Intel Discrete Graphic SPI + auxiliary device. + + To compile this driver as a module, choose M here: the module + will be called spi-intel-dg. + config SPI_JCORE tristate "J-Core SPI Master" depends on OF && (SUPERH || COMPILE_TEST) diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index e694254dec04..3c48a086c0e0 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_SPI_INGENIC) += spi-ingenic.o obj-$(CONFIG_SPI_INTEL) += spi-intel.o obj-$(CONFIG_SPI_INTEL_PCI) += spi-intel-pci.o obj-$(CONFIG_SPI_INTEL_PLATFORM) += spi-intel-platform.o +obj-$(CONFIG_SPI_INTEL_DG) += spi-intel-dg.o obj-$(CONFIG_SPI_LANTIQ_SSC) += spi-lantiq-ssc.o obj-$(CONFIG_SPI_JCORE) += spi-jcore.o obj-$(CONFIG_SPI_LJCA) += spi-ljca.o diff --git a/drivers/spi/spi-intel-dg.c b/drivers/spi/spi-intel-dg.c new file mode 100644 index 000000000000..7a00d222bb72 --- /dev/null +++ b/drivers/spi/spi-intel-dg.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright(c) 2019-2024, Intel Corporation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +struct intel_dg_spi { + struct kref refcnt; + void __iomem *base; + size_t size; + unsigned int nregions; + struct { + const char *name; + u8 id; + u64 offset; + u64 size; + } regions[]; +}; + +static void intel_dg_spi_release(struct kref *kref) +{ + struct intel_dg_spi *spi = container_of(kref, struct intel_dg_spi, refcnt); + int i; + + pr_debug("freeing spi memory\n"); + for (i = 0; i < spi->nregions; i++) + kfree(spi->regions[i].name); + kfree(spi); +} + +static int intel_dg_spi_probe(struct auxiliary_device *aux_dev, + const struct auxiliary_device_id *aux_dev_id) +{ + struct intel_dg_spi_dev *ispi = auxiliary_dev_to_intel_dg_spi_dev(aux_dev); + struct device *device; + struct intel_dg_spi *spi; + unsigned int nregions; + unsigned int i, n; + size_t size; + char *name; + size_t name_size; + int ret; + + device = &aux_dev->dev; + + /* count available regions */ + for (nregions = 0, i = 0; i < INTEL_DG_SPI_REGIONS; i++) { + if (ispi->regions[i].name) + nregions++; + } + + if (!nregions) { + dev_err(device, "no regions defined\n"); + return -ENODEV; + } + + size = sizeof(*spi) + sizeof(spi->regions[0]) * nregions; + spi = kzalloc(size, GFP_KERNEL); + if (!spi) + return -ENOMEM; + + kref_init(&spi->refcnt); + + spi->nregions = nregions; + for (n = 0, i = 0; i < INTEL_DG_SPI_REGIONS; i++) { + if (ispi->regions[i].name) { + name_size = strlen(dev_name(&aux_dev->dev)) + + strlen(ispi->regions[i].name) + 2; /* for point */ + name = kzalloc(name_size, GFP_KERNEL); + if (!name) + continue; + snprintf(name, name_size, "%s.%s", + dev_name(&aux_dev->dev), ispi->regions[i].name); + spi->regions[n].name = name; + spi->regions[n].id = i; + n++; + } + } + + spi->base = devm_ioremap_resource(device, &ispi->bar); + if (IS_ERR(spi->base)) { + dev_err(device, "mmio not mapped\n"); + ret = PTR_ERR(spi->base); + goto err; + } + + dev_set_drvdata(&aux_dev->dev, spi); + + return 0; + +err: + kref_put(&spi->refcnt, intel_dg_spi_release); + return ret; +} + +static void intel_dg_spi_remove(struct auxiliary_device *aux_dev) +{ + struct intel_dg_spi *spi = dev_get_drvdata(&aux_dev->dev); + + if (!spi) + return; + + dev_set_drvdata(&aux_dev->dev, NULL); + + kref_put(&spi->refcnt, intel_dg_spi_release); +} + +static const struct auxiliary_device_id intel_dg_spi_id_table[] = { + { + .name = "i915.spi", + }, + { + .name = "xe.spi", + }, + { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(auxiliary, intel_dg_spi_id_table); + +static struct auxiliary_driver intel_dg_spi_driver = { + .probe = intel_dg_spi_probe, + .remove = intel_dg_spi_remove, + .driver = { + /* auxiliary_driver_register() sets .name to be the modname */ + }, + .id_table = intel_dg_spi_id_table +}; + +module_auxiliary_driver(intel_dg_spi_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Intel Corporation"); +MODULE_DESCRIPTION("Intel DGFX SPI driver"); diff --git a/include/linux/intel_dg_spi_aux.h b/include/linux/intel_dg_spi_aux.h new file mode 100644 index 000000000000..d4c3830d56d6 --- /dev/null +++ b/include/linux/intel_dg_spi_aux.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright(c) 2019-2024, Intel Corporation. All rights reserved. + */ + +#ifndef __INTEL_DG_SPI_AUX_H__ +#define __INTEL_DG_SPI_AUX_H__ + +#include + +#define INTEL_DG_SPI_REGIONS 13 + +struct intel_dg_spi_region { + const char *name; +}; + +struct intel_dg_spi_dev { + struct auxiliary_device aux_dev; + bool writeable_override; + struct resource bar; + const struct intel_dg_spi_region *regions; +}; + +#define auxiliary_dev_to_intel_dg_spi_dev(auxiliary_dev) \ + container_of(auxiliary_dev, struct intel_dg_spi_dev, aux_dev) + +#endif /* __INTEL_DG_SPI_AUX_H__ */ From patchwork Thu Jul 25 13:56:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814560 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 68A9A1EB2F for ; Thu, 25 Jul 2024 14:05:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916333; cv=none; b=lPKK4NNLvvPsPEQkmojx8Re0AU4aYYEQTkkHwwIOlNQqKSb9lQoYte6SVmR6gcgi5OaH+fCdyJlf58qHBGH0gx56zKk/fVYwtiBOKHot0j7RkRP7Qypvo64c4gETfTYvUWB2zUat8WUXUXAz1JDTiTZ0vm+/kaRgyvK9Ay7xahs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916333; c=relaxed/simple; bh=gA14zLLi9b8+u0fO0AwBvXMUmragaKJIlZtkidHrRdU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=acEADhpLJrwi87N1b6+ej/OeAoF5ll9566zWArkmlNiem9Vx2axg06aavoDladHAFp0ITiL6xrwJeArfLVZUhhtveUr+vclVNPNSioxTJNgda4/AYGBuh/4buKNb3DkBcRYyZS+xh+0hjkexZlhAfTrLbV/nsPl+61djPrHlnlg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=NKUWv2Os; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="NKUWv2Os" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721916332; x=1753452332; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=gA14zLLi9b8+u0fO0AwBvXMUmragaKJIlZtkidHrRdU=; b=NKUWv2OsNUh3HKc5ugqjJzbf6+QmgJ4SHUo/7E2fPIL8UKJVKBd6+xT2 Lt3TUTeNv6EeSYWP2yuaychRP/cSHsTBcal3P3X3vq6JWUGZVDpJ396c6 6ZQvXV46+16YVF1h155NNQMMrBMcr7+b9jsLTQESwddC5g/L5/URnk6Xe lqbvtDHMTXCEZ3lbDsWQwMQ6DAOgSxDqMQoKlbfXl1K3AZ1wvYKgT0/NJ Z0UqeKOskiV2VSKQr0EOhsv9KcdAFbXLzQDP/4zxNUwThZ+gOAyCJfTXi XNYKug5m5rIq7hKH0TOkWP7iHEiumyEFIolZGYAWuKO5kj3+SlNPtVDsD w==; X-CSE-ConnectionGUID: zguf5/XXSzyT9hTGZOpFZA== X-CSE-MsgGUID: HsMyokcjSeqRrm15dsmoAw== X-IronPort-AV: E=McAfee;i="6700,10204,11144"; a="19504784" X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="19504784" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:31 -0700 X-CSE-ConnectionGUID: uTKo8zEGQp65h10xjq914Q== X-CSE-MsgGUID: 9mxSGsYSS9KkeBokCXG5lg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007732" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:24 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 02/12] spi: intel-dg: implement region enumeration Date: Thu, 25 Jul 2024 16:56:47 +0300 Message-Id: <20240725135657.1061836-3-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Tomas Winkler In intel-dg spi, there is no access to the spi controller, the information is extracted from the descriptor region. CC: Rodrigo Vivi CC: Lucas De Marchi Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/spi/spi-intel-dg.c | 190 +++++++++++++++++++++++++++++++++++++ 1 file changed, 190 insertions(+) diff --git a/drivers/spi/spi-intel-dg.c b/drivers/spi/spi-intel-dg.c index 7a00d222bb72..1da8f527d47c 100644 --- a/drivers/spi/spi-intel-dg.c +++ b/drivers/spi/spi-intel-dg.c @@ -17,14 +17,197 @@ struct intel_dg_spi { void __iomem *base; size_t size; unsigned int nregions; + u32 access_map; struct { const char *name; u8 id; u64 offset; u64 size; + unsigned int is_readable:1; + unsigned int is_writable:1; } regions[]; }; +#define SPI_TRIGGER_REG 0x00000000 +#define SPI_VALSIG_REG 0x00000010 +#define SPI_ADDRESS_REG 0x00000040 +#define SPI_REGION_ID_REG 0x00000044 +/* + * [15:0]-Erase size = 0x0010 4K 0x0080 32K 0x0100 64K + * [23:16]-Reserved + * [31:24]-Erase SPI RegionID + */ +#define SPI_ERASE_REG 0x00000048 +#define SPI_ACCESS_ERROR_REG 0x00000070 +#define SPI_ADDRESS_ERROR_REG 0x00000074 + +/* Flash Valid Signature */ +#define SPI_FLVALSIG 0x0FF0A55A + +#define SPI_MAP_ADDR_MASK 0x000000FF +#define SPI_MAP_ADDR_SHIFT 0x00000004 + +#define REGION_ID_DESCRIPTOR 0 +/* Flash Region Base Address */ +#define FRBA 0x40 +/* Flash Region __n - Flash Descriptor Record */ +#define FLREG(__n) (FRBA + ((__n) * 4)) +/* Flash Map 1 Register */ +#define FLMAP1_REG 0x18 +#define FLMSTR4_OFFSET 0x00C + +#define SPI_ACCESS_ERROR_PCIE_MASK 0x7 + +static inline void spi_set_region_id(struct intel_dg_spi *spi, u8 region) +{ + iowrite32((u32)region, spi->base + SPI_REGION_ID_REG); +} + +static inline u32 spi_error(struct intel_dg_spi *spi) +{ + u32 reg = ioread32(spi->base + SPI_ACCESS_ERROR_REG) & + SPI_ACCESS_ERROR_PCIE_MASK; + + /* reset error bits */ + if (reg) + iowrite32(reg, spi->base + SPI_ACCESS_ERROR_REG); + + return reg; +} + +static inline u32 spi_read32(struct intel_dg_spi *spi, u32 address) +{ + void __iomem *base = spi->base; + + iowrite32(address, base + SPI_ADDRESS_REG); + + return ioread32(base + SPI_TRIGGER_REG); +} + +static int spi_get_access_map(struct intel_dg_spi *spi) +{ + u32 flmap1; + u32 fmba; + u32 fmstr4; + u32 fmstr4_addr; + + spi_set_region_id(spi, REGION_ID_DESCRIPTOR); + + flmap1 = spi_read32(spi, FLMAP1_REG); + if (spi_error(spi)) + return -EIO; + /* Get Flash Master Baser Address (FMBA) */ + fmba = ((flmap1 & SPI_MAP_ADDR_MASK) << SPI_MAP_ADDR_SHIFT); + fmstr4_addr = fmba + FLMSTR4_OFFSET; + + fmstr4 = spi_read32(spi, fmstr4_addr); + if (spi_error(spi)) + return -EIO; + + spi->access_map = fmstr4; + return 0; +} + +static bool spi_region_readable(struct intel_dg_spi *spi, u8 region) +{ + if (region < 12) + return spi->access_map & (1 << (region + 8)); /* [19:8] */ + else + return spi->access_map & (1 << (region - 12)); /* [3:0] */ +} + +static bool spi_region_writeable(struct intel_dg_spi *spi, u8 region) +{ + if (region < 12) + return spi->access_map & (1 << (region + 20)); /* [31:20] */ + else + return spi->access_map & (1 << (region - 8)); /* [7:4] */ +} + +static int intel_dg_spi_is_valid(struct intel_dg_spi *spi) +{ + u32 is_valid; + + spi_set_region_id(spi, REGION_ID_DESCRIPTOR); + + is_valid = spi_read32(spi, SPI_VALSIG_REG); + if (spi_error(spi)) + return -EIO; + + if (is_valid != SPI_FLVALSIG) + return -ENODEV; + + return 0; +} + +static int intel_dg_spi_init(struct intel_dg_spi *spi, struct device *device) +{ + int ret; + unsigned int i, n; + + /* clean error register, previous errors are ignored */ + spi_error(spi); + + ret = intel_dg_spi_is_valid(spi); + if (ret) { + dev_err(device, "The SPI is not valid %d\n", ret); + return ret; + } + + if (spi_get_access_map(spi)) + return -EIO; + + for (i = 0, n = 0; i < spi->nregions; i++) { + u32 address, base, limit, region; + u8 id = spi->regions[i].id; + + address = FLREG(id); + region = spi_read32(spi, address); + + base = (region & 0x0000FFFF) << 12; + limit = (((region & 0xFFFF0000) >> 16) << 12) | 0xFFF; + + dev_dbg(device, "[%d] %s: region: 0x%08X base: 0x%08x limit: 0x%08x\n", + id, spi->regions[i].name, region, base, limit); + + if (base >= limit || (i > 0 && limit == 0)) { + dev_dbg(device, "[%d] %s: disabled\n", + id, spi->regions[i].name); + spi->regions[i].is_readable = 0; + continue; + } + + if (spi->size < limit) + spi->size = limit; + + spi->regions[i].offset = base; + spi->regions[i].size = limit - base + 1; + /* No write access to descriptor; mask it out*/ + spi->regions[i].is_writable = spi_region_writeable(spi, id); + + spi->regions[i].is_readable = spi_region_readable(spi, id); + dev_dbg(device, "Registered, %s id=%d offset=%lld size=%lld rd=%d wr=%d\n", + spi->regions[i].name, + spi->regions[i].id, + spi->regions[i].offset, + spi->regions[i].size, + spi->regions[i].is_readable, + spi->regions[i].is_writable); + + if (spi->regions[i].is_readable) + n++; + } + + dev_dbg(device, "Registered %d regions\n", n); + + /* Need to add 1 to the amount of memory + * so it is reported as an even block + */ + spi->size += 1; + + return n; +} + static void intel_dg_spi_release(struct kref *kref) { struct intel_dg_spi *spi = container_of(kref, struct intel_dg_spi, refcnt); @@ -92,6 +275,13 @@ static int intel_dg_spi_probe(struct auxiliary_device *aux_dev, goto err; } + ret = intel_dg_spi_init(spi, device); + if (ret < 0) { + dev_err(device, "cannot initialize spi\n"); + ret = -ENODEV; + goto err; + } + dev_set_drvdata(&aux_dev->dev, spi); return 0; From patchwork Thu Jul 25 13:56:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814840 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3916A1993B7 for ; Thu, 25 Jul 2024 14:05:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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a="19504808" X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="19504808" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:37 -0700 X-CSE-ConnectionGUID: u2ndi7OBQO+qBBzs7tIJLg== X-CSE-MsgGUID: Yv6g/2gzTvipsJ7j8yzxFg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007746" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:30 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 03/12] spi: intel-dg: implement spi access functions Date: Thu, 25 Jul 2024 16:56:48 +0300 Message-Id: <20240725135657.1061836-4-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Tomas Winkler Implement spi_read(), spi_erase() and spi_write() functions. CC: Lucas De Marchi CC: Rodrigo Vivi Signed-off-by: Tomas Winkler Signed-off-by: Vitaly Lubart Signed-off-by: Alexander Usyskin --- drivers/spi/spi-intel-dg.c | 199 +++++++++++++++++++++++++++++++++++++ 1 file changed, 199 insertions(+) diff --git a/drivers/spi/spi-intel-dg.c b/drivers/spi/spi-intel-dg.c index 1da8f527d47c..63c8292347e7 100644 --- a/drivers/spi/spi-intel-dg.c +++ b/drivers/spi/spi-intel-dg.c @@ -3,13 +3,16 @@ * Copyright(c) 2019-2024, Intel Corporation. All rights reserved. */ +#include #include #include #include +#include #include #include #include #include +#include #include struct intel_dg_spi { @@ -84,6 +87,33 @@ static inline u32 spi_read32(struct intel_dg_spi *spi, u32 address) return ioread32(base + SPI_TRIGGER_REG); } +static inline u64 spi_read64(struct intel_dg_spi *spi, u32 address) +{ + void __iomem *base = spi->base; + + iowrite32(address, base + SPI_ADDRESS_REG); + + return readq(base + SPI_TRIGGER_REG); +} + +static void spi_write32(struct intel_dg_spi *spi, u32 address, u32 data) +{ + void __iomem *base = spi->base; + + iowrite32(address, base + SPI_ADDRESS_REG); + + iowrite32(data, base + SPI_TRIGGER_REG); +} + +static void spi_write64(struct intel_dg_spi *spi, u32 address, u64 data) +{ + void __iomem *base = spi->base; + + iowrite32(address, base + SPI_ADDRESS_REG); + + writeq(data, base + SPI_TRIGGER_REG); +} + static int spi_get_access_map(struct intel_dg_spi *spi) { u32 flmap1; @@ -140,6 +170,175 @@ static int intel_dg_spi_is_valid(struct intel_dg_spi *spi) return 0; } +__maybe_unused +static unsigned int spi_get_region(const struct intel_dg_spi *spi, loff_t from) +{ + unsigned int i; + + for (i = 0; i < spi->nregions; i++) { + if ((spi->regions[i].offset + spi->regions[i].size - 1) > from && + spi->regions[i].offset <= from && + spi->regions[i].size != 0) + break; + } + + return i; +} + +static ssize_t spi_rewrite_partial(struct intel_dg_spi *spi, loff_t to, + loff_t offset, size_t len, const u32 *newdata) +{ + u32 data = spi_read32(spi, to); + + if (spi_error(spi)) + return -EIO; + + memcpy((u8 *)&data + offset, newdata, len); + + spi_write32(spi, to, data); + if (spi_error(spi)) + return -EIO; + + return len; +} + +__maybe_unused +static ssize_t spi_write(struct intel_dg_spi *spi, u8 region, + loff_t to, size_t len, const unsigned char *buf) +{ + size_t i; + size_t len8; + size_t len4; + size_t to4; + size_t to_shift; + size_t len_s = len; + ssize_t ret; + + spi_set_region_id(spi, region); + + to4 = ALIGN_DOWN(to, sizeof(u32)); + to_shift = min(sizeof(u32) - ((size_t)to - to4), len); + if (to - to4) { + ret = spi_rewrite_partial(spi, to4, to - to4, to_shift, + (uint32_t *)&buf[0]); + if (ret < 0) + return ret; + + buf += to_shift; + to += to_shift; + len_s -= to_shift; + } + + len8 = ALIGN_DOWN(len_s, sizeof(u64)); + for (i = 0; i < len8; i += sizeof(u64)) { + u64 data; + + memcpy(&data, &buf[i], sizeof(u64)); + spi_write64(spi, to + i, data); + if (spi_error(spi)) + return -EIO; + } + + len4 = len_s - len8; + if (len4 >= sizeof(u32)) { + u32 data; + + memcpy(&data, &buf[i], sizeof(u32)); + spi_write32(spi, to + i, data); + if (spi_error(spi)) + return -EIO; + i += sizeof(u32); + len4 -= sizeof(u32); + } + + if (len4 > 0) { + ret = spi_rewrite_partial(spi, to + i, 0, len4, + (uint32_t *)&buf[i]); + if (ret < 0) + return ret; + } + + return len; +} + +__maybe_unused +static ssize_t spi_read(struct intel_dg_spi *spi, u8 region, + loff_t from, size_t len, unsigned char *buf) +{ + size_t i; + size_t len8; + size_t len4; + size_t from4; + size_t from_shift; + size_t len_s = len; + + spi_set_region_id(spi, region); + + from4 = ALIGN_DOWN(from, sizeof(u32)); + from_shift = min(sizeof(u32) - ((size_t)from - from4), len); + + if (from - from4) { + u32 data = spi_read32(spi, from4); + + if (spi_error(spi)) + return -EIO; + memcpy(&buf[0], (u8 *)&data + (from - from4), from_shift); + len_s -= from_shift; + buf += from_shift; + from += from_shift; + } + + len8 = ALIGN_DOWN(len_s, sizeof(u64)); + for (i = 0; i < len8; i += sizeof(u64)) { + u64 data = spi_read64(spi, from + i); + + if (spi_error(spi)) + return -EIO; + + memcpy(&buf[i], &data, sizeof(data)); + } + + len4 = len_s - len8; + if (len4 >= sizeof(u32)) { + u32 data = spi_read32(spi, from + i); + + if (spi_error(spi)) + return -EIO; + memcpy(&buf[i], &data, sizeof(data)); + i += sizeof(u32); + len4 -= sizeof(u32); + } + + if (len4 > 0) { + u32 data = spi_read32(spi, from + i); + + if (spi_error(spi)) + return -EIO; + memcpy(&buf[i], &data, len4); + } + + return len; +} + +__maybe_unused +static ssize_t +spi_erase(struct intel_dg_spi *spi, u8 region, loff_t from, u64 len, u64 *fail_addr) +{ + u64 i; + const u32 block = 0x10; + void __iomem *base = spi->base; + + for (i = 0; i < len; i += SZ_4K) { + iowrite32(from + i, base + SPI_ADDRESS_REG); + iowrite32(region << 24 | block, base + SPI_ERASE_REG); + /* Since the writes are via sguint + * we cannot do back to back erases. + */ + msleep(50); + } + return len; +} + static int intel_dg_spi_init(struct intel_dg_spi *spi, struct device *device) { int ret; From patchwork Thu Jul 25 13:56:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814559 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9A7731993A3 for ; Thu, 25 Jul 2024 14:05:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916344; cv=none; b=VyYZ3btLiFl53Vqg3RxLt0F60JmRefeCu0R81dcOFcPKUfIOkBp9gtMHc9j1CmLoqCvGKgZaLLF0B4qeb/bpNPzyM9lhHeRqy6u68Rb0XZpznujXZ6BIcF5AEjgOz5+TSpBk0oGgUCkmcu2Nf3l7itSpTjXLktt0IEmLqNfSMTw= ARC-Message-Signature: i=1; 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d="scan'208";a="53007753" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:36 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 04/12] spi: intel-dg: spi register with mtd Date: Thu, 25 Jul 2024 16:56:49 +0300 Message-Id: <20240725135657.1061836-5-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Tomas Winkler Register the on-die spi device with the mtd subsystem. Refcount spi object on _get and _put mtd callbacks. CC: Rodrigo Vivi CC: Lucas De Marchi Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/spi/spi-intel-dg.c | 111 +++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) diff --git a/drivers/spi/spi-intel-dg.c b/drivers/spi/spi-intel-dg.c index 63c8292347e7..2ffc2d61fdc8 100644 --- a/drivers/spi/spi-intel-dg.c +++ b/drivers/spi/spi-intel-dg.c @@ -10,6 +10,8 @@ #include #include #include +#include +#include #include #include #include @@ -17,6 +19,8 @@ struct intel_dg_spi { struct kref refcnt; + struct mtd_info mtd; + struct mutex lock; /* region access lock */ void __iomem *base; size_t size; unsigned int nregions; @@ -407,6 +411,23 @@ static int intel_dg_spi_init(struct intel_dg_spi *spi, struct device *device) return n; } +static int intel_dg_spi_erase(struct mtd_info *mtd, struct erase_info *info) +{ + return 0; +} + +static int intel_dg_spi_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + return 0; +} + +static int intel_dg_spi_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) +{ + return 0; +} + static void intel_dg_spi_release(struct kref *kref) { struct intel_dg_spi *spi = container_of(kref, struct intel_dg_spi, refcnt); @@ -415,9 +436,90 @@ static void intel_dg_spi_release(struct kref *kref) pr_debug("freeing spi memory\n"); for (i = 0; i < spi->nregions; i++) kfree(spi->regions[i].name); + mutex_destroy(&spi->lock); kfree(spi); } +static int intel_dg_spi_get_device(struct mtd_info *mtd) +{ + struct mtd_info *master; + struct intel_dg_spi *spi; + + if (!mtd) + return -ENODEV; + + master = mtd_get_master(mtd); + spi = master->priv; + if (WARN_ON(!spi)) + return -EINVAL; + pr_debug("get spi %s %d\n", mtd->name, kref_read(&spi->refcnt)); + kref_get(&spi->refcnt); + + return 0; +} + +static void intel_dg_spi_put_device(struct mtd_info *mtd) +{ + struct mtd_info *master; + struct intel_dg_spi *spi; + + if (!mtd) + return; + + master = mtd_get_master(mtd); + spi = master->priv; + if (WARN_ON(!spi)) + return; + pr_debug("put spi %s %d\n", mtd->name, kref_read(&spi->refcnt)); + kref_put(&spi->refcnt, intel_dg_spi_release); +} + +static int intel_dg_spi_init_mtd(struct intel_dg_spi *spi, struct device *device, + unsigned int nparts, bool writeable_override) +{ + unsigned int i; + unsigned int n; + struct mtd_partition *parts = NULL; + int ret; + + dev_dbg(device, "registering with mtd\n"); + + spi->mtd.owner = THIS_MODULE; + spi->mtd.dev.parent = device; + spi->mtd.flags = MTD_CAP_NORFLASH | MTD_WRITEABLE; + spi->mtd.type = MTD_DATAFLASH; + spi->mtd.priv = spi; + spi->mtd._write = intel_dg_spi_write; + spi->mtd._read = intel_dg_spi_read; + spi->mtd._erase = intel_dg_spi_erase; + spi->mtd._get_device = intel_dg_spi_get_device; + spi->mtd._put_device = intel_dg_spi_put_device; + spi->mtd.writesize = SZ_1; /* 1 byte granularity */ + spi->mtd.erasesize = SZ_4K; /* 4K bytes granularity */ + spi->mtd.size = spi->size; + + parts = kcalloc(spi->nregions, sizeof(*parts), GFP_KERNEL); + if (!parts) + return -ENOMEM; + + for (i = 0, n = 0; i < spi->nregions && n < nparts; i++) { + if (!spi->regions[i].is_readable) + continue; + parts[n].name = spi->regions[i].name; + parts[n].offset = spi->regions[i].offset; + parts[n].size = spi->regions[i].size; + if (!spi->regions[i].is_writable && !writeable_override) + parts[n].mask_flags = MTD_WRITEABLE; + n++; + } + + ret = mtd_device_register(&spi->mtd, parts, n); + + kfree(parts); + + return ret; +} + static int intel_dg_spi_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *aux_dev_id) { @@ -449,6 +551,7 @@ static int intel_dg_spi_probe(struct auxiliary_device *aux_dev, if (!spi) return -ENOMEM; + mutex_init(&spi->lock); kref_init(&spi->refcnt); spi->nregions = nregions; @@ -481,6 +584,12 @@ static int intel_dg_spi_probe(struct auxiliary_device *aux_dev, goto err; } + ret = intel_dg_spi_init_mtd(spi, device, ret, ispi->writeable_override); + if (ret) { + dev_err(device, "failed init mtd %d\n", ret); + goto err; + } + dev_set_drvdata(&aux_dev->dev, spi); return 0; @@ -497,6 +606,8 @@ static void intel_dg_spi_remove(struct auxiliary_device *aux_dev) if (!spi) return; + mtd_device_unregister(&spi->mtd); + dev_set_drvdata(&aux_dev->dev, NULL); kref_put(&spi->refcnt, intel_dg_spi_release); From patchwork Thu Jul 25 13:56:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814839 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2CFED1993B7 for ; Thu, 25 Jul 2024 14:05:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916349; cv=none; b=L2LNHTpv/WgYE5Z1cykyN0uB0Ejzujfhc1aGVNkSVO3oKCHYyT2LBWn39xyK+7qW4dtStdfou8OEFAbYsiKhGcRZGMC1Jx6vx4rNvnd3GiPndAsrwGCO21v4HiNhg1Qk8iqD7bpXbbuzmAORiPqa3jeBSDIL6XeTcX34E24rihs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916349; c=relaxed/simple; bh=czB05BS6HT4dbgmuzTPUCyCXBiBfJbeYHzptJ2vMm3M=; 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25 Jul 2024 07:05:41 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 05/12] spi: intel-dg: implement mtd access handlers Date: Thu, 25 Jul 2024 16:56:50 +0300 Message-Id: <20240725135657.1061836-6-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Tomas Winkler Implement mtd read, erase, and write handlers. For erase operation address and size should be 4K aligned. For write operation address and size has to be 4bytes aligned. CC: Rodrigo Vivi CC: Lucas De Marchi Signed-off-by: Tomas Winkler Signed-off-by: Vitaly Lubart Signed-off-by: Alexander Usyskin --- drivers/spi/spi-intel-dg.c | 152 +++++++++++++++++++++++++++++++++++-- 1 file changed, 147 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-intel-dg.c b/drivers/spi/spi-intel-dg.c index 2ffc2d61fdc8..dc4d6c573522 100644 --- a/drivers/spi/spi-intel-dg.c +++ b/drivers/spi/spi-intel-dg.c @@ -174,7 +174,6 @@ static int intel_dg_spi_is_valid(struct intel_dg_spi *spi) return 0; } -__maybe_unused static unsigned int spi_get_region(const struct intel_dg_spi *spi, loff_t from) { unsigned int i; @@ -206,7 +205,6 @@ static ssize_t spi_rewrite_partial(struct intel_dg_spi *spi, loff_t to, return len; } -__maybe_unused static ssize_t spi_write(struct intel_dg_spi *spi, u8 region, loff_t to, size_t len, const unsigned char *buf) { @@ -265,7 +263,6 @@ static ssize_t spi_write(struct intel_dg_spi *spi, u8 region, return len; } -__maybe_unused static ssize_t spi_read(struct intel_dg_spi *spi, u8 region, loff_t from, size_t len, unsigned char *buf) { @@ -324,7 +321,6 @@ static ssize_t spi_read(struct intel_dg_spi *spi, u8 region, return len; } -__maybe_unused static ssize_t spi_erase(struct intel_dg_spi *spi, u8 region, loff_t from, u64 len, u64 *fail_addr) { @@ -413,18 +409,164 @@ static int intel_dg_spi_init(struct intel_dg_spi *spi, struct device *device) static int intel_dg_spi_erase(struct mtd_info *mtd, struct erase_info *info) { - return 0; + struct intel_dg_spi *spi; + unsigned int idx; + u8 region; + u64 addr; + ssize_t bytes; + loff_t from; + size_t len; + size_t total_len; + int ret = 0; + + if (!mtd || !info) + return -EINVAL; + + spi = mtd->priv; + if (WARN_ON(!spi)) + return -EINVAL; + + if (!IS_ALIGNED(info->addr, SZ_4K) || !IS_ALIGNED(info->len, SZ_4K)) { + dev_err(&mtd->dev, "unaligned erase %llx %llx\n", + info->addr, info->len); + info->fail_addr = MTD_FAIL_ADDR_UNKNOWN; + return -EINVAL; + } + + total_len = info->len; + addr = info->addr; + + mutex_lock(&spi->lock); + + while (total_len > 0) { + if (!IS_ALIGNED(addr, SZ_4K) || !IS_ALIGNED(total_len, SZ_4K)) { + dev_err(&mtd->dev, "unaligned erase %llx %zx\n", addr, total_len); + info->fail_addr = addr; + ret = -ERANGE; + goto out; + } + + idx = spi_get_region(spi, addr); + if (idx >= spi->nregions) { + dev_err(&mtd->dev, "out of range"); + info->fail_addr = MTD_FAIL_ADDR_UNKNOWN; + ret = -ERANGE; + goto out; + } + + from = addr - spi->regions[idx].offset; + region = spi->regions[idx].id; + len = total_len; + if (len > spi->regions[idx].size - from) + len = spi->regions[idx].size - from; + + dev_dbg(&mtd->dev, "erasing region[%d] %s from %llx len %zx\n", + region, spi->regions[idx].name, from, len); + + bytes = spi_erase(spi, region, from, len, &info->fail_addr); + if (bytes < 0) { + dev_dbg(&mtd->dev, "erase failed with %zd\n", bytes); + info->fail_addr += spi->regions[idx].offset; + ret = bytes; + goto out; + } + + addr += len; + total_len -= len; + } + +out: + mutex_unlock(&spi->lock); + return ret; } static int intel_dg_spi_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { + struct intel_dg_spi *spi; + ssize_t ret; + unsigned int idx; + u8 region; + + if (!mtd) + return -EINVAL; + + spi = mtd->priv; + if (WARN_ON(!spi)) + return -EINVAL; + + idx = spi_get_region(spi, from); + + dev_dbg(&mtd->dev, "reading region[%d] %s from %lld len %zd\n", + spi->regions[idx].id, spi->regions[idx].name, from, len); + + if (idx >= spi->nregions) { + dev_err(&mtd->dev, "out of ragnge"); + return -ERANGE; + } + + from -= spi->regions[idx].offset; + region = spi->regions[idx].id; + if (len > spi->regions[idx].size - from) + len = spi->regions[idx].size - from; + + mutex_lock(&spi->lock); + + ret = spi_read(spi, region, from, len, buf); + if (ret < 0) { + dev_dbg(&mtd->dev, "read failed with %zd\n", ret); + mutex_unlock(&spi->lock); + return ret; + } + + *retlen = ret; + + mutex_unlock(&spi->lock); return 0; } static int intel_dg_spi_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) { + struct intel_dg_spi *spi; + ssize_t ret; + unsigned int idx; + u8 region; + + if (!mtd) + return -EINVAL; + + spi = mtd->priv; + if (WARN_ON(!spi)) + return -EINVAL; + + idx = spi_get_region(spi, to); + + dev_dbg(&mtd->dev, "writing region[%d] %s to %lld len %zd\n", + spi->regions[idx].id, spi->regions[idx].name, to, len); + + if (idx >= spi->nregions) { + dev_err(&mtd->dev, "out of range"); + return -ERANGE; + } + + to -= spi->regions[idx].offset; + region = spi->regions[idx].id; + if (len > spi->regions[idx].size - to) + len = spi->regions[idx].size - to; + + mutex_lock(&spi->lock); + + ret = spi_write(spi, region, to, len, buf); + if (ret < 0) { + dev_dbg(&mtd->dev, "write failed with %zd\n", ret); + mutex_unlock(&spi->lock); + return ret; + } + + *retlen = ret; + + mutex_unlock(&spi->lock); return 0; } From patchwork Thu Jul 25 13:56:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814558 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 23E51173347 for ; 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a="19504847" X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="19504847" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:53 -0700 X-CSE-ConnectionGUID: r75fFjeIRqSCh8qgoA06fA== X-CSE-MsgGUID: PwaTcJEgSA+HuyZLvvA5+w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007770" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:47 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 06/12] spi: intel-dg: align 64bit read and write Date: Thu, 25 Jul 2024 16:56:51 +0300 Message-Id: <20240725135657.1061836-7-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 GSC SPI HW errors on quad access overlapping 1K border. Align 64bit read and write to avoid readq/writeq over 1K border. Signed-off-by: Alexander Usyskin --- drivers/spi/spi-intel-dg.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/drivers/spi/spi-intel-dg.c b/drivers/spi/spi-intel-dg.c index dc4d6c573522..534e99cb336d 100644 --- a/drivers/spi/spi-intel-dg.c +++ b/drivers/spi/spi-intel-dg.c @@ -231,6 +231,24 @@ static ssize_t spi_write(struct intel_dg_spi *spi, u8 region, len_s -= to_shift; } + if (!IS_ALIGNED(to, sizeof(u64)) && + ((to ^ (to + len_s)) & GENMASK(31, 10))) { + /* + * Workaround reads/writes across 1k-aligned addresses + * (start u32 before 1k, end u32 after) + * as this fails on hardware. + */ + u32 data; + + memcpy(&data, &buf[0], sizeof(u32)); + spi_write32(spi, to, data); + if (spi_error(spi)) + return -EIO; + buf += sizeof(u32); + to += sizeof(u32); + len_s -= sizeof(u32); + } + len8 = ALIGN_DOWN(len_s, sizeof(u64)); for (i = 0; i < len8; i += sizeof(u64)) { u64 data; @@ -289,6 +307,23 @@ static ssize_t spi_read(struct intel_dg_spi *spi, u8 region, from += from_shift; } + if (!IS_ALIGNED(from, sizeof(u64)) && + ((from ^ (from + len_s)) & GENMASK(31, 10))) { + /* + * Workaround reads/writes across 1k-aligned addresses + * (start u32 before 1k, end u32 after) + * as this fails on hardware. + */ + u32 data = spi_read32(spi, from); + + if (spi_error(spi)) + return -EIO; + memcpy(&buf[0], &data, sizeof(data)); + len_s -= sizeof(u32); + buf += sizeof(u32); + from += sizeof(u32); + } + len8 = ALIGN_DOWN(len_s, sizeof(u64)); for (i = 0; i < len8; i += sizeof(u64)) { u64 data = spi_read64(spi, from + i); From patchwork Thu Jul 25 13:56:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814838 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C6DCC19D060 for ; Thu, 25 Jul 2024 14:05:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; 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25 Jul 2024 07:05:59 -0700 X-CSE-ConnectionGUID: Hwj0QsGWSBCtx69WboHL0g== X-CSE-MsgGUID: 4Q6mLiMNSnu/RX/MiYcHMQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007779" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:52 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 07/12] spi: intel-dg: wake card on operations Date: Thu, 25 Jul 2024 16:56:52 +0300 Message-Id: <20240725135657.1061836-8-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Enable runtime PM in spi driver to notify graphics driver that whole card should be kept awake while spi operations are performed through this driver. CC: Lucas De Marchi Signed-off-by: Alexander Usyskin --- drivers/spi/spi-intel-dg.c | 44 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/spi/spi-intel-dg.c b/drivers/spi/spi-intel-dg.c index 534e99cb336d..9671c4ec01a9 100644 --- a/drivers/spi/spi-intel-dg.c +++ b/drivers/spi/spi-intel-dg.c @@ -12,11 +12,14 @@ #include #include #include +#include #include #include #include #include +#define INTEL_DG_SPI_RPM_TIMEOUT 500 + struct intel_dg_spi { struct kref refcnt; struct mtd_info mtd; @@ -471,6 +474,12 @@ static int intel_dg_spi_erase(struct mtd_info *mtd, struct erase_info *info) total_len = info->len; addr = info->addr; + ret = pm_runtime_resume_and_get(mtd->dev.parent); + if (ret < 0) { + dev_err(&mtd->dev, "rpm: get failed %d\n", ret); + return ret; + } + mutex_lock(&spi->lock); while (total_len > 0) { @@ -512,6 +521,8 @@ static int intel_dg_spi_erase(struct mtd_info *mtd, struct erase_info *info) out: mutex_unlock(&spi->lock); + pm_runtime_mark_last_busy(mtd->dev.parent); + pm_runtime_put_autosuspend(mtd->dev.parent); return ret; } @@ -545,6 +556,12 @@ static int intel_dg_spi_read(struct mtd_info *mtd, loff_t from, size_t len, if (len > spi->regions[idx].size - from) len = spi->regions[idx].size - from; + ret = pm_runtime_resume_and_get(mtd->dev.parent); + if (ret < 0) { + dev_err(&mtd->dev, "rpm: get failed %zd\n", ret); + return ret; + } + mutex_lock(&spi->lock); ret = spi_read(spi, region, from, len, buf); @@ -557,6 +574,8 @@ static int intel_dg_spi_read(struct mtd_info *mtd, loff_t from, size_t len, *retlen = ret; mutex_unlock(&spi->lock); + pm_runtime_mark_last_busy(mtd->dev.parent); + pm_runtime_put_autosuspend(mtd->dev.parent); return 0; } @@ -590,6 +609,12 @@ static int intel_dg_spi_write(struct mtd_info *mtd, loff_t to, size_t len, if (len > spi->regions[idx].size - to) len = spi->regions[idx].size - to; + ret = pm_runtime_resume_and_get(mtd->dev.parent); + if (ret < 0) { + dev_err(&mtd->dev, "rpm: get failed %zd\n", ret); + return ret; + } + mutex_lock(&spi->lock); ret = spi_write(spi, region, to, len, buf); @@ -602,6 +627,8 @@ static int intel_dg_spi_write(struct mtd_info *mtd, loff_t to, size_t len, *retlen = ret; mutex_unlock(&spi->lock); + pm_runtime_mark_last_busy(mtd->dev.parent); + pm_runtime_put_autosuspend(mtd->dev.parent); return 0; } @@ -747,6 +774,17 @@ static int intel_dg_spi_probe(struct auxiliary_device *aux_dev, } } + pm_runtime_enable(device); + + pm_runtime_set_autosuspend_delay(device, INTEL_DG_SPI_RPM_TIMEOUT); + pm_runtime_use_autosuspend(device); + + ret = pm_runtime_resume_and_get(device); + if (ret < 0) { + dev_err(device, "rpm: get failed %d\n", ret); + goto err_norpm; + } + spi->base = devm_ioremap_resource(device, &ispi->bar); if (IS_ERR(spi->base)) { dev_err(device, "mmio not mapped\n"); @@ -769,9 +807,13 @@ static int intel_dg_spi_probe(struct auxiliary_device *aux_dev, dev_set_drvdata(&aux_dev->dev, spi); + pm_runtime_put(device); return 0; err: + pm_runtime_put(device); +err_norpm: + pm_runtime_disable(device); kref_put(&spi->refcnt, intel_dg_spi_release); return ret; } @@ -783,6 +825,8 @@ static void intel_dg_spi_remove(struct auxiliary_device *aux_dev) if (!spi) return; + pm_runtime_disable(&aux_dev->dev); + mtd_device_unregister(&spi->mtd); dev_set_drvdata(&aux_dev->dev, NULL); From patchwork Thu Jul 25 13:56:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814557 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2347819B3EA for ; Thu, 25 Jul 2024 14:06:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916366; cv=none; b=WC4ZNnBSGhcWcPsf2d5/tYmjco+tgd9MseTHIFcKEuhfVxqLeY98+z28Vccax26qsiFlCT4GIv+YUNZfzmstRGmjNWK/Fp9RTaMd0QiAWSmwP7zyvc9XdGzV70yfdOQ30rFJOfNmv2fm614w8o+mvqNolO3546SjzI4CT0ncLHQ= ARC-Message-Signature: i=1; a=rsa-sha256; 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d="scan'208";a="53007793" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:05:58 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 08/12] drm/i915/spi: add spi device for discrete graphics Date: Thu, 25 Jul 2024 16:56:53 +0300 Message-Id: <20240725135657.1061836-9-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Tomas Winkler Enable access to internal spi on DGFX devices via a child device. The spi child device is exposed via auxiliary bus. CC: Rodrigo Vivi CC: Lucas De Marchi Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/i915/Makefile | 4 ++ drivers/gpu/drm/i915/i915_driver.c | 6 +++ drivers/gpu/drm/i915/i915_drv.h | 4 ++ drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/spi/intel_spi.c | 64 ++++++++++++++++++++++++++++ drivers/gpu/drm/i915/spi/intel_spi.h | 15 +++++++ 6 files changed, 94 insertions(+) create mode 100644 drivers/gpu/drm/i915/spi/intel_spi.c create mode 100644 drivers/gpu/drm/i915/spi/intel_spi.h diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index c63fa2133ccb..02a9faf049a7 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -211,6 +211,10 @@ i915-y += \ i915-y += \ gt/intel_gsc.o +# graphics spi device (DGFX) support +i915-y += \ + spi/intel_spi.o + # graphics hardware monitoring (HWMON) support i915-$(CONFIG_HWMON) += \ i915_hwmon.o diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c index 161b21eff694..49916a586dac 100644 --- a/drivers/gpu/drm/i915/i915_driver.c +++ b/drivers/gpu/drm/i915/i915_driver.c @@ -81,6 +81,8 @@ #include "soc/intel_dram.h" #include "soc/intel_gmch.h" +#include "spi/intel_spi.h" + #include "i915_debugfs.h" #include "i915_driver.h" #include "i915_drm_client.h" @@ -619,6 +621,8 @@ static void i915_driver_register(struct drm_i915_private *dev_priv) /* Depends on sysfs having been initialized */ i915_perf_register(dev_priv); + intel_spi_init(dev_priv); + for_each_gt(gt, dev_priv, i) intel_gt_driver_register(gt); @@ -662,6 +666,8 @@ static void i915_driver_unregister(struct drm_i915_private *dev_priv) i915_hwmon_unregister(dev_priv); + intel_spi_fini(dev_priv); + i915_perf_unregister(dev_priv); i915_pmu_unregister(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index d1d21d433766..dd48fae4efe0 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -34,6 +34,8 @@ #include +#include + #include #include "display/intel_display_limits.h" @@ -315,6 +317,8 @@ struct drm_i915_private { struct i915_perf perf; + struct intel_dg_spi_dev spi; + struct i915_hwmon *hwmon; struct intel_gt *gt[I915_MAX_GT]; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 8e4478194d11..50dc19c58666 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -323,6 +323,7 @@ #define DG2_GSC_HECI2_BASE 0x00374000 #define MTL_GSC_HECI1_BASE 0x00116000 #define MTL_GSC_HECI2_BASE 0x00117000 +#define GEN12_GUNIT_SPI_BASE 0x00102040 #define HECI_H_CSR(base) _MMIO((base) + 0x4) #define HECI_H_CSR_IE REG_BIT(0) diff --git a/drivers/gpu/drm/i915/spi/intel_spi.c b/drivers/gpu/drm/i915/spi/intel_spi.c new file mode 100644 index 000000000000..17e4c7861ef5 --- /dev/null +++ b/drivers/gpu/drm/i915/spi/intel_spi.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright(c) 2019-2024, Intel Corporation. All rights reserved. + */ + +#include +#include +#include "i915_reg.h" +#include "i915_drv.h" +#include "spi/intel_spi.h" + +#define GEN12_GUNIT_SPI_SIZE 0x80 + +static void i915_spi_release_dev(struct device *dev) +{ +} + +void intel_spi_init(struct drm_i915_private *dev_priv) +{ + struct intel_dg_spi_dev *spi = &dev_priv->spi; + struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); + struct auxiliary_device *aux_dev = &spi->aux_dev; + int ret; + + /* Only the DGFX devices have internal SPI */ + if (!IS_DGFX(dev_priv)) + return; + + spi->bar.parent = &pdev->resource[0]; + spi->bar.start = GEN12_GUNIT_SPI_BASE + pdev->resource[0].start; + spi->bar.end = spi->bar.start + GEN12_GUNIT_SPI_SIZE - 1; + spi->bar.flags = IORESOURCE_MEM; + spi->bar.desc = IORES_DESC_NONE; + + aux_dev->name = "spi"; + aux_dev->id = (pci_domain_nr(pdev->bus) << 16) | + PCI_DEVID(pdev->bus->number, pdev->devfn); + aux_dev->dev.parent = &pdev->dev; + aux_dev->dev.release = i915_spi_release_dev; + + ret = auxiliary_device_init(aux_dev); + if (ret) { + dev_err(&pdev->dev, "i915-spi aux init failed %d\n", ret); + return; + } + + ret = auxiliary_device_add(aux_dev); + if (ret) { + dev_err(&pdev->dev, "i915-spi aux add failed %d\n", ret); + auxiliary_device_uninit(aux_dev); + return; + } +} + +void intel_spi_fini(struct drm_i915_private *dev_priv) +{ + struct intel_dg_spi_dev *spi = &dev_priv->spi; + struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); + + dev_dbg(&pdev->dev, "removing i915-spi cell\n"); + + auxiliary_device_delete(&spi->aux_dev); + auxiliary_device_uninit(&spi->aux_dev); +} diff --git a/drivers/gpu/drm/i915/spi/intel_spi.h b/drivers/gpu/drm/i915/spi/intel_spi.h new file mode 100644 index 000000000000..ed4153401f5d --- /dev/null +++ b/drivers/gpu/drm/i915/spi/intel_spi.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright(c) 2019-2024 Intel Corporation. All rights reserved. + */ + +#ifndef __INTEL_SPI_H__ +#define __INTEL_SPI_H__ + +struct drm_i915_private; + +void intel_spi_init(struct drm_i915_private *i915); + +void intel_spi_fini(struct drm_i915_private *i915); + +#endif /* __INTEL_SPI_H__ */ From patchwork Thu Jul 25 13:56:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814837 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 539F519D074 for ; Thu, 25 Jul 2024 14:06:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916373; cv=none; b=BnO+5QSulLgku364P8PCBIjriP91H/p6ll8hjvmyfejtMigR55coKBPkAEwep8CcKdnrjiMzqpiBjLDR11FYhEqJMC5q32hm0/uPlhwdWZ+yOHi+YIoyJYnYJuCit3T47UeTDA31pkfo5r/n/eeXdVtBggfRXrC7Pc2QNpF7biQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916373; c=relaxed/simple; bh=ykvhi9CLDv624qgten1HNwsh5CZkKKRX9KCLAGda0l8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=t0uz9jdHtxVU5UkQfgcXYw8KMR38ycA4DPIQIu9SLPgFnbOo/i+PnUp0xTBh/BjGM6b2KxLcO0HghAKvUC9yHY2AiWwQCCoUWVgajE6kTqTH2zEcpgaW5Y0BocxWD0MpsqfXngK+AffjBPFdegPxDZvSEY4akslcata/raiJc6k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=LmMEVh2I; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="LmMEVh2I" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721916373; x=1753452373; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ykvhi9CLDv624qgten1HNwsh5CZkKKRX9KCLAGda0l8=; b=LmMEVh2IOARpnEojFabC8RmMsK+0ynIQMkz7f2n9N7FZ07wq3A15DwqZ w297X8n1w4wAeQ+SHiKZLEEi386y3B+c/GER09qWOZbdqOZm+3M8WX8NT bJszMOdI0ywHJ1BWHT41F9uPXSSQz8GuVGQv+phSQaWdWFrfty+h8/69d SUGJrDRu30R+L/dnYT9cJpEqSEbOzyt3XGeCrkCpxEVLuIB/Lv9ld8LsK 48fUT4yKXSoExla4lbKueA9cKnVS1/YcF62VpTh5VtIUN4WRRxQEPqCPR RTSWWy/gIr+EY3lFzcu90Yvzkd4s5RJADvaFo0cbhIq9bm1VO+urCYek2 A==; X-CSE-ConnectionGUID: a6Imt6x2SBi2C6CpA6Ygsw== X-CSE-MsgGUID: /DChvYSRRTyJ9ze9qArSfw== X-IronPort-AV: E=McAfee;i="6700,10204,11144"; a="19504941" X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="19504941" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:06:12 -0700 X-CSE-ConnectionGUID: w2prjSJfTQqnE2MDYMt/eA== X-CSE-MsgGUID: Ie87jppNRguJzuLI+ImUKg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007828" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:06:04 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 09/12] drm/i915/spi: add intel_spi_region map Date: Thu, 25 Jul 2024 16:56:54 +0300 Message-Id: <20240725135657.1061836-10-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Tomas Winkler Add the dGFX spi region map and convey it via auxiliary device to the spi child device. CC: Rodrigo Vivi CC: Lucas De Marchi Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/i915/spi/intel_spi.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/spi/intel_spi.c b/drivers/gpu/drm/i915/spi/intel_spi.c index 17e4c7861ef5..8dd4065551e2 100644 --- a/drivers/gpu/drm/i915/spi/intel_spi.c +++ b/drivers/gpu/drm/i915/spi/intel_spi.c @@ -11,6 +11,13 @@ #define GEN12_GUNIT_SPI_SIZE 0x80 +static const struct intel_dg_spi_region regions[INTEL_DG_SPI_REGIONS] = { + [0] = { .name = "DESCRIPTOR", }, + [2] = { .name = "GSC", }, + [11] = { .name = "OptionROM", }, + [12] = { .name = "DAM", }, +}; + static void i915_spi_release_dev(struct device *dev) { } @@ -31,6 +38,7 @@ void intel_spi_init(struct drm_i915_private *dev_priv) spi->bar.end = spi->bar.start + GEN12_GUNIT_SPI_SIZE - 1; spi->bar.flags = IORESOURCE_MEM; spi->bar.desc = IORES_DESC_NONE; + spi->regions = regions; aux_dev->name = "spi"; aux_dev->id = (pci_domain_nr(pdev->bus) << 16) | From patchwork Thu Jul 25 13:56:55 2024 Content-Type: text/plain; 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25 Jul 2024 07:06:10 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 10/12] drm/i915/spi: add support for access mode Date: Thu, 25 Jul 2024 16:56:55 +0300 Message-Id: <20240725135657.1061836-11-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Check SPI access mode from GSC FW status registers and overwrite access status read from SPI descriptor, if needed. Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/i915/spi/intel_spi.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/gpu/drm/i915/spi/intel_spi.c b/drivers/gpu/drm/i915/spi/intel_spi.c index 8dd4065551e2..747e43313c6f 100644 --- a/drivers/gpu/drm/i915/spi/intel_spi.c +++ b/drivers/gpu/drm/i915/spi/intel_spi.c @@ -10,6 +10,7 @@ #include "spi/intel_spi.h" #define GEN12_GUNIT_SPI_SIZE 0x80 +#define HECI_FW_STATUS_2_SPI_ACCESS_MODE BIT(3) static const struct intel_dg_spi_region regions[INTEL_DG_SPI_REGIONS] = { [0] = { .name = "DESCRIPTOR", }, @@ -22,6 +23,29 @@ static void i915_spi_release_dev(struct device *dev) { } +static bool i915_spi_writeable_override(struct drm_i915_private *dev_priv) +{ + struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); + resource_size_t base; + bool writeable_override; + + if (IS_DG1(dev_priv)) { + base = DG1_GSC_HECI2_BASE; + } else if (IS_DG2(dev_priv)) { + base = DG2_GSC_HECI2_BASE; + } else { + dev_err(&pdev->dev, "Unknown platform\n"); + return true; + } + + writeable_override = + !(intel_uncore_read(&dev_priv->uncore, HECI_FWSTS(base, 2)) & + HECI_FW_STATUS_2_SPI_ACCESS_MODE); + if (writeable_override) + dev_info(&pdev->dev, "SPI access overridden by jumper\n"); + return writeable_override; +} + void intel_spi_init(struct drm_i915_private *dev_priv) { struct intel_dg_spi_dev *spi = &dev_priv->spi; @@ -33,6 +57,7 @@ void intel_spi_init(struct drm_i915_private *dev_priv) if (!IS_DGFX(dev_priv)) return; + spi->writeable_override = i915_spi_writeable_override(dev_priv); spi->bar.parent = &pdev->resource[0]; spi->bar.start = GEN12_GUNIT_SPI_BASE + pdev->resource[0].start; spi->bar.end = spi->bar.start + GEN12_GUNIT_SPI_SIZE - 1; From patchwork Thu Jul 25 13:56:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814836 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88E2E19B3D7 for ; 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a="19504994" X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="19504994" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:06:23 -0700 X-CSE-ConnectionGUID: 8lg2xgmsRYem3GVA7NEg5g== X-CSE-MsgGUID: kIm5gdQmSaWRfN3P+9aV5A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007871" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:06:16 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 11/12] drm/xe/spi: add on-die spi device Date: Thu, 25 Jul 2024 16:56:56 +0300 Message-Id: <20240725135657.1061836-12-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Enable access to internal spi on DGFX with GSC/CSC devices via a child device. The spi child device is exposed via auxiliary bus. Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/xe/Makefile | 1 + drivers/gpu/drm/xe/xe_device.c | 3 ++ drivers/gpu/drm/xe/xe_device_types.h | 8 +++ drivers/gpu/drm/xe/xe_pci.c | 5 ++ drivers/gpu/drm/xe/xe_spi.c | 73 ++++++++++++++++++++++++++++ drivers/gpu/drm/xe/xe_spi.h | 15 ++++++ 6 files changed, 105 insertions(+) create mode 100644 drivers/gpu/drm/xe/xe_spi.c create mode 100644 drivers/gpu/drm/xe/xe_spi.h diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile index 1ff9602a52f6..f98e26b81035 100644 --- a/drivers/gpu/drm/xe/Makefile +++ b/drivers/gpu/drm/xe/Makefile @@ -95,6 +95,7 @@ xe-y += xe_bb.o \ xe_ring_ops.o \ xe_sa.o \ xe_sched_job.o \ + xe_spi.o \ xe_step.o \ xe_sync.o \ xe_tile.o \ diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 1aba6f9eaa19..7b7aee91497e 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -47,6 +47,7 @@ #include "xe_pcode.h" #include "xe_pm.h" #include "xe_query.h" +#include "xe_spi.h" #include "xe_sriov.h" #include "xe_tile.h" #include "xe_ttm_stolen_mgr.h" @@ -720,6 +721,7 @@ int xe_device_probe(struct xe_device *xe) goto err_fini_gt; } + xe_spi_init(xe); xe_heci_gsc_init(xe); err = xe_oa_init(xe); @@ -788,6 +790,7 @@ void xe_device_remove(struct xe_device *xe) xe_oa_fini(xe); xe_heci_gsc_fini(xe); + xe_spi_fini(xe); for_each_gt(gt, xe, id) xe_gt_remove(gt); diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h index 5b7292a9a66d..69bd4cbbc588 100644 --- a/drivers/gpu/drm/xe/xe_device_types.h +++ b/drivers/gpu/drm/xe/xe_device_types.h @@ -12,6 +12,8 @@ #include #include +#include + #include "xe_devcoredump_types.h" #include "xe_heci_gsc.h" #include "xe_gt_types.h" @@ -45,6 +47,7 @@ struct xe_pat_ops; #define IS_DGFX(xe) ((xe)->info.is_dgfx) #define HAS_HECI_GSCFI(xe) ((xe)->info.has_heci_gscfi) #define HAS_HECI_CSCFI(xe) ((xe)->info.has_heci_cscfi) +#define HAS_GSC_SPI(xe) ((xe)->info.has_gsc_spi) #define XE_VRAM_FLAGS_NEED64K BIT(0) @@ -292,6 +295,8 @@ struct xe_device { u8 has_heci_gscfi:1; /** @info.has_heci_cscfi: device has heci cscfi */ u8 has_heci_cscfi:1; + /** @info.has_gsc_spi: device has gsc spi */ + u8 has_gsc_spi:1; /** @info.skip_guc_pc: Skip GuC based PM feature init */ u8 skip_guc_pc:1; /** @info.has_atomic_enable_pte_bit: Device has atomic enable PTE bit */ @@ -473,6 +478,9 @@ struct xe_device { /** @oa: oa observation subsystem */ struct xe_oa oa; + /** @spi: discrete graphics spi */ + struct intel_dg_spi_dev spi; + /** @needs_flr_on_fini: requests function-reset on fini */ bool needs_flr_on_fini; diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index 3c4a3c91377a..c74c36ee7fa6 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -60,6 +60,7 @@ struct xe_device_desc { u8 has_display:1; u8 has_heci_gscfi:1; u8 has_heci_cscfi:1; + u8 has_gsc_spi:1; u8 has_llc:1; u8 has_mmio_ext:1; u8 has_sriov:1; @@ -283,6 +284,7 @@ static const struct xe_device_desc dg1_desc = { PLATFORM(DG1), .has_display = true, .has_heci_gscfi = 1, + .has_gsc_spi = 1, .require_force_probe = true, }; @@ -294,6 +296,7 @@ static const u16 dg2_g12_ids[] = { XE_DG2_G12_IDS(NOP), 0 }; DGFX_FEATURES, \ PLATFORM(DG2), \ .has_heci_gscfi = 1, \ + .has_gsc_spi = 1, \ .subplatforms = (const struct xe_subplatform_desc[]) { \ { XE_SUBPLATFORM_DG2_G10, "G10", dg2_g10_ids }, \ { XE_SUBPLATFORM_DG2_G11, "G11", dg2_g11_ids }, \ @@ -325,6 +328,7 @@ static const __maybe_unused struct xe_device_desc pvc_desc = { PLATFORM(PVC), .has_display = false, .has_heci_gscfi = 1, + .has_gsc_spi = 1, .require_force_probe = true, }; @@ -609,6 +613,7 @@ static int xe_info_init_early(struct xe_device *xe, xe->info.is_dgfx = desc->is_dgfx; xe->info.has_heci_gscfi = desc->has_heci_gscfi; xe->info.has_heci_cscfi = desc->has_heci_cscfi; + xe->info.has_gsc_spi = desc->has_gsc_spi; xe->info.has_llc = desc->has_llc; xe->info.has_mmio_ext = desc->has_mmio_ext; xe->info.has_sriov = desc->has_sriov; diff --git a/drivers/gpu/drm/xe/xe_spi.c b/drivers/gpu/drm/xe/xe_spi.c new file mode 100644 index 000000000000..f8ad060f97f2 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_spi.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright(c) 2019-2024, Intel Corporation. All rights reserved. + */ + +#include +#include +#include "xe_device_types.h" +#include "xe_spi.h" + +#define GEN12_GUNIT_SPI_BASE 0x00102040 +#define GEN12_GUNIT_SPI_SIZE 0x80 +#define HECI_FW_STATUS_2_SPI_ACCESS_MODE BIT(3) + +static const struct intel_dg_spi_region regions[INTEL_DG_SPI_REGIONS] = { + [0] = { .name = "DESCRIPTOR", }, + [2] = { .name = "GSC", }, + [11] = { .name = "OptionROM", }, + [12] = { .name = "DAM", }, +}; + +static void xe_spi_release_dev(struct device *dev) +{ +} + +void xe_spi_init(struct xe_device *xe) +{ + struct intel_dg_spi_dev *spi = &xe->spi; + struct pci_dev *pdev = to_pci_dev(xe->drm.dev); + struct auxiliary_device *aux_dev = &spi->aux_dev; + int ret; + + if (!HAS_GSC_SPI(xe)) + return; + + spi->writeable_override = false; + spi->bar.parent = &pdev->resource[0]; + spi->bar.start = GEN12_GUNIT_SPI_BASE + pdev->resource[0].start; + spi->bar.end = spi->bar.start + GEN12_GUNIT_SPI_SIZE - 1; + spi->bar.flags = IORESOURCE_MEM; + spi->bar.desc = IORES_DESC_NONE; + spi->regions = regions; + + aux_dev->name = "spi"; + aux_dev->id = (pci_domain_nr(pdev->bus) << 16) | + PCI_DEVID(pdev->bus->number, pdev->devfn); + aux_dev->dev.parent = &pdev->dev; + aux_dev->dev.release = xe_spi_release_dev; + + ret = auxiliary_device_init(aux_dev); + if (ret) { + dev_err(&pdev->dev, "xe-spi aux init failed %d\n", ret); + return; + } + + ret = auxiliary_device_add(aux_dev); + if (ret) { + dev_err(&pdev->dev, "xe-spi aux add failed %d\n", ret); + auxiliary_device_uninit(aux_dev); + return; + } +} + +void xe_spi_fini(struct xe_device *xe) +{ + struct intel_dg_spi_dev *spi = &xe->spi; + + if (!HAS_GSC_SPI(xe)) + return; + + auxiliary_device_delete(&spi->aux_dev); + auxiliary_device_uninit(&spi->aux_dev); +} diff --git a/drivers/gpu/drm/xe/xe_spi.h b/drivers/gpu/drm/xe/xe_spi.h new file mode 100644 index 000000000000..aef79893a864 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_spi.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright(c) 2019-2024 Intel Corporation. All rights reserved. + */ + +#ifndef __XE_SPI_H__ +#define __XE_SPI_H__ + +struct xe_device; + +void xe_spi_init(struct xe_device *xe); + +void xe_spi_fini(struct xe_device *xe); + +#endif /* __XE_SPI_H__ */ From patchwork Thu Jul 25 13:56:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Usyskin, Alexander" X-Patchwork-Id: 814555 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7F24119ADBF for ; Thu, 25 Jul 2024 14:06:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916391; cv=none; b=IzrPT01hqexnR2CLfwXp2HZTczhnoeOEkFQBpT8LFi8q9fq/fhA6AWUhxYxgv1oE3NBp1YD+jjT3mFnGHXHc6jzhGHnCHBR+iB3IGCO1II5IvdyVYFBsO7vLhmWx3iLe5IzSBDBGh3bqAFvsT6aqtyIhlpsQ0nyBC2ZwqFe4Nbo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721916391; c=relaxed/simple; bh=LR8NOyGYfjYFMYI7lLxD7ILGJpX9PhePm8zaR8atZYM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=rhdNyNkwflxevM68cWgt/5vUQ5thiJrxSZJ9SwQUWwf/nJ+gVR2Abk+/JnvOYE1tFDIBZl0lD/+BJCcfSeq0uVgO19jG3KhwZIoiGxlz3aXcJ1DLy9V2/opzStOJdLA8d+XXsKI4lAXgatl6CL8j/Sp7EYYqIUQsJiydZkdMdKs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Bu/FyJ5H; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Bu/FyJ5H" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721916391; x=1753452391; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LR8NOyGYfjYFMYI7lLxD7ILGJpX9PhePm8zaR8atZYM=; b=Bu/FyJ5HBJnt5HM/1wrVvWtg1YWYPYEU0dFtUDqqUv5qgp5RiaVGS6Yl 9E16HjavSvKwSANUBzGsVySo4qQSCvM+JNBePbcAOdjORsrSiaE2Y9EzC Rv+N4iUxyNdwrj6YhJmakgUVZGU2G2IsiwiYqr9G5SZz8XSh90cJzGqy1 xo/Ta9Jo7JLZ60+NQ+D2F+ru3nMqTfjcWMA8h8LSz7EguWoA2Ot3jkPNT Ugsr1FaVY4+OiU09GFQNcBY8o1YBzIIxwxl9djm3VlSxXBtANHqHodxBN m6I1AkV3oNVl0hl2jl6n851/qTyR8n1ejfGj1RseKsdNLmdYslZnSsSkk A==; X-CSE-ConnectionGUID: gM5VMN3vRACmzdSoir+WUQ== X-CSE-MsgGUID: Xc+1HeqgTqi/FZpTxDaKcQ== X-IronPort-AV: E=McAfee;i="6700,10204,11144"; a="19505018" X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="19505018" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:06:30 -0700 X-CSE-ConnectionGUID: RzMkEFj7R9GzcOmJt4JVqA== X-CSE-MsgGUID: lUhpWc2WRhKpMM98YD1i5A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,236,1716274800"; d="scan'208";a="53007895" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2024 07:06:21 -0700 From: Alexander Usyskin To: Mark Brown , Lucas De Marchi , Oded Gabbay , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 12/12] drm/xe/spi: add support for access mode Date: Thu, 25 Jul 2024 16:56:57 +0300 Message-Id: <20240725135657.1061836-13-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240725135657.1061836-1-alexander.usyskin@intel.com> References: <20240725135657.1061836-1-alexander.usyskin@intel.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Check SPI access mode from GSC FW status registers and overwrite access status read from SPI descriptor, if needed. Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/xe/regs/xe_gsc_regs.h | 5 ++++ drivers/gpu/drm/xe/xe_heci_gsc.c | 5 +--- drivers/gpu/drm/xe/xe_spi.c | 33 ++++++++++++++++++++++++++- 3 files changed, 38 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/xe/regs/xe_gsc_regs.h b/drivers/gpu/drm/xe/regs/xe_gsc_regs.h index e2a925be137c..28c049e60e66 100644 --- a/drivers/gpu/drm/xe/regs/xe_gsc_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_gsc_regs.h @@ -16,6 +16,11 @@ #define MTL_GSC_HECI1_BASE 0x00116000 #define MTL_GSC_HECI2_BASE 0x00117000 +#define DG1_GSC_HECI2_BASE 0x00259000 +#define PVC_GSC_HECI2_BASE 0x00285000 +#define DG2_GSC_HECI2_BASE 0x00374000 + + #define HECI_H_CSR(base) XE_REG((base) + 0x4) #define HECI_H_CSR_IE REG_BIT(0) #define HECI_H_CSR_IS REG_BIT(1) diff --git a/drivers/gpu/drm/xe/xe_heci_gsc.c b/drivers/gpu/drm/xe/xe_heci_gsc.c index 65b2e147c4b9..27734085164e 100644 --- a/drivers/gpu/drm/xe/xe_heci_gsc.c +++ b/drivers/gpu/drm/xe/xe_heci_gsc.c @@ -11,14 +11,11 @@ #include "xe_device_types.h" #include "xe_drv.h" #include "xe_heci_gsc.h" +#include "regs/xe_gsc_regs.h" #include "xe_platform_types.h" #define GSC_BAR_LENGTH 0x00000FFC -#define DG1_GSC_HECI2_BASE 0x259000 -#define PVC_GSC_HECI2_BASE 0x285000 -#define DG2_GSC_HECI2_BASE 0x374000 - static void heci_gsc_irq_mask(struct irq_data *d) { /* generic irq handling */ diff --git a/drivers/gpu/drm/xe/xe_spi.c b/drivers/gpu/drm/xe/xe_spi.c index f8ad060f97f2..9019672bd464 100644 --- a/drivers/gpu/drm/xe/xe_spi.c +++ b/drivers/gpu/drm/xe/xe_spi.c @@ -5,7 +5,10 @@ #include #include +#include "xe_device.h" #include "xe_device_types.h" +#include "xe_mmio.h" +#include "regs/xe_gsc_regs.h" #include "xe_spi.h" #define GEN12_GUNIT_SPI_BASE 0x00102040 @@ -23,6 +26,34 @@ static void xe_spi_release_dev(struct device *dev) { } +static bool xe_spi_writeable_override(struct xe_device *xe) +{ + struct xe_gt *gt = xe_root_mmio_gt(xe); + struct pci_dev *pdev = to_pci_dev(xe->drm.dev); + resource_size_t base; + bool writeable_override; + + if (xe->info.platform == XE_BATTLEMAGE) { + base = DG2_GSC_HECI2_BASE; + } else if (xe->info.platform == XE_PVC) { + base = PVC_GSC_HECI2_BASE; + } else if (xe->info.platform == XE_DG2) { + base = DG2_GSC_HECI2_BASE; + } else if (xe->info.platform == XE_DG1) { + base = DG1_GSC_HECI2_BASE; + } else { + dev_err(&pdev->dev, "Unknown platform\n"); + return true; + } + + writeable_override = + !(xe_mmio_read32(gt, HECI_H_GS1(base)) & + HECI_FW_STATUS_2_SPI_ACCESS_MODE); + if (writeable_override) + dev_info(&pdev->dev, "SPI access overridden by jumper\n"); + return writeable_override; +} + void xe_spi_init(struct xe_device *xe) { struct intel_dg_spi_dev *spi = &xe->spi; @@ -33,7 +64,7 @@ void xe_spi_init(struct xe_device *xe) if (!HAS_GSC_SPI(xe)) return; - spi->writeable_override = false; + spi->writeable_override = xe_spi_writeable_override(xe); spi->bar.parent = &pdev->resource[0]; spi->bar.start = GEN12_GUNIT_SPI_BASE + pdev->resource[0].start; spi->bar.end = spi->bar.start + GEN12_GUNIT_SPI_SIZE - 1;