ipq806x: backport mtd adm and smem driver

- Backport mtd adm driver from kernel 5.12
- Backport mtd parser smem from kernel 5.11
- Fix mtd rootfs patch
- Update qcom,smem compatible to qcom,smem-parts

Signed-off-by: Ansuel Smith <[email protected]>

target/linux/ipq806x/config-5.4

@@ -313,7 +313,7 @@ CONFIG_MTD_CMDLINE_PARTS=y
 CONFIG_MTD_NAND_CORE=y
 CONFIG_MTD_NAND_ECC_SW_HAMMING=y
 CONFIG_MTD_NAND_QCOM=y
-CONFIG_MTD_QCOM_SMEM_PARTS=y
+CONFIG_MTD_QCOMSMEM_PARTS=y
 CONFIG_MTD_RAW_NAND=y
 CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPLIT_FIRMWARE=y

target/linux/ipq806x/files/arch/arm/boot/dts/qcom-ipq8064-ap148.dts

@@ -30,7 +30,7 @@
 
 &flash {
 	partitions {
-		compatible = "qcom,smem";
+		compatible = "qcom,smem-part";
 	};
 };
 
@@ -66,7 +66,7 @@
 		nand-ecc-step-size = <512>;
 
 		partitions {
-			compatible = "qcom,smem";
+			compatible = "qcom,smem-part";
 		};
 	};
 };

target/linux/ipq806x/files/arch/arm/boot/dts/qcom-ipq8064-ap161.dts

@@ -38,7 +38,7 @@
 
 &flash {
 	partitions {
-		compatible = "qcom,smem";
+		compatible = "qcom,smem-part";
 	};
 };
 
@@ -78,7 +78,7 @@
 		nand-ecc-step-size = <512>;
 
 		partitions {
-			compatible = "qcom,smem";
+			compatible = "qcom,smem-part";
 		};
 	};
 };

target/linux/ipq806x/files/arch/arm/boot/dts/qcom-ipq8064-g10.dts

@@ -179,7 +179,7 @@
 		nand-ecc-step-size = <512>;
 
 		partitions {
-			compatible = "qcom,smem";
+			compatible = "qcom,smem-part";
 		};
 	};
 };

target/linux/ipq806x/files/arch/arm/boot/dts/qcom-ipq8065-nbg6817.dts

@@ -182,7 +182,7 @@
 			reg = <0>;
 
 			partitions {
-				compatible = "qcom,smem";
+				compatible = "qcom,smem-part";
 			};
 		};
 	};

target/linux/ipq806x/files/arch/arm/boot/dts/qcom-ipq8068-ecw5410.dts

@@ -184,7 +184,7 @@
 			reg = <0>;
 
 			partitions {
-				compatible = "qcom,smem";
+				compatible = "qcom,smem-part";
 			};
 		};
 	};

target/linux/ipq806x/patches-5.10/0031-mtd-add-SMEM-parser-for-QCOM-platforms.patch

@@ -1,282 +0,0 @@
-From d8eeb4de90e968ba32d956728c866f20752cf2c3 Mon Sep 17 00:00:00 2001
-From: Mathieu Olivari <[email protected]>
-Date: Thu, 9 Mar 2017 08:18:08 +0100
-Subject: [PATCH 31/69] mtd: add SMEM parser for QCOM platforms
-
-On QCOM platforms using MTD devices storage (such as IPQ806x), SMEM is
-used to store partition layout. This new parser can now be used to read
-SMEM and use it to register an MTD layout according to its content.
-
-Signed-off-by: Mathieu Olivari <[email protected]>
-Signed-off-by: Ram Chandra Jangir <[email protected]>
----
- drivers/mtd/parsers/Kconfig          |   7 ++
- drivers/mtd/parsers/Makefile         |   1 +
- drivers/mtd/parsers/qcom_smem_part.c | 228 +++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 236 insertions(+)
- create mode 100644 drivers/mtd/parsers/qcom_smem_part.c
-
---- a/drivers/mtd/parsers/Kconfig
-+++ b/drivers/mtd/parsers/Kconfig
-@@ -119,6 +119,13 @@ config MTD_PARSER_TRX
- 	  This driver will parse TRX header and report at least two partitions:
- 	  kernel and rootfs.
- 
-+config MTD_QCOM_SMEM_PARTS
-+	tristate "QCOM SMEM partitioning support"
-+	depends on QCOM_SMEM
-+	help
-+	  This provides partitions parser for QCOM devices using SMEM
-+	  such as IPQ806x.
-+
- config MTD_SHARPSL_PARTS
- 	tristate "Sharp SL Series NAND flash partition parser"
- 	depends on MTD_NAND_SHARPSL || MTD_NAND_TMIO || COMPILE_TEST
---- a/drivers/mtd/parsers/Makefile
-+++ b/drivers/mtd/parsers/Makefile
-@@ -8,6 +8,7 @@ obj-$(CONFIG_MTD_OF_PARTS)		+= ofpart.o
- obj-$(CONFIG_MTD_PARSER_IMAGETAG)	+= parser_imagetag.o
- obj-$(CONFIG_MTD_AFS_PARTS)		+= afs.o
- obj-$(CONFIG_MTD_PARSER_TRX)		+= parser_trx.o
-+obj-$(CONFIG_MTD_QCOM_SMEM_PARTS)		+= qcom_smem_part.o
- obj-$(CONFIG_MTD_SHARPSL_PARTS)		+= sharpslpart.o
- obj-$(CONFIG_MTD_REDBOOT_PARTS)		+= redboot.o
- obj-$(CONFIG_MTD_ROUTERBOOT_PARTS)		+= routerbootpart.o
---- /dev/null
-+++ b/drivers/mtd/parsers/qcom_smem_part.c
-@@ -0,0 +1,235 @@
-+/*
-+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 and
-+ * only version 2 as published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/device.h>
-+#include <linux/slab.h>
-+
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/spi/spi.h>
-+#include <linux/module.h>
-+
-+#include <linux/soc/qcom/smem.h>
-+
-+/* Processor/host identifier for the application processor */
-+#define SMEM_HOST_APPS			0
-+
-+/* SMEM items index */
-+#define SMEM_AARM_PARTITION_TABLE	9
-+#define SMEM_BOOT_FLASH_TYPE		421
-+#define SMEM_BOOT_FLASH_BLOCK_SIZE	424
-+
-+/* SMEM Flash types */
-+#define SMEM_FLASH_NAND			2
-+#define SMEM_FLASH_SPI			6
-+
-+#define SMEM_PART_NAME_SZ		16
-+#define SMEM_PARTS_MAX			32
-+
-+struct smem_partition {
-+	char name[SMEM_PART_NAME_SZ];
-+	__le32 start;
-+	__le32 size;
-+	__le32 attr;
-+};
-+
-+struct smem_partition_table {
-+	u8 magic[8];
-+	__le32 version;
-+	__le32 len;
-+	struct smem_partition parts[SMEM_PARTS_MAX];
-+};
-+
-+/* SMEM Magic values in partition table */
-+static const u8 SMEM_PTABLE_MAGIC[] = {
-+	0xaa, 0x73, 0xee, 0x55,
-+	0xdb, 0xbd, 0x5e, 0xe3,
-+};
-+
-+static int qcom_smem_get_flash_blksz(u64 **smem_blksz)
-+{
-+	size_t size;
-+
-+	*smem_blksz = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_BLOCK_SIZE,
-+			    	    &size);
-+
-+	if (IS_ERR(*smem_blksz)) {
-+		pr_err("Unable to read flash blksz from SMEM\n");
-+		return -ENOENT;
-+	}
-+
-+	if (size != sizeof(**smem_blksz)) {
-+		pr_err("Invalid flash blksz size in SMEM\n");
-+		return -EINVAL;
-+	}
-+
-+	return 0;
-+}
-+
-+static int qcom_smem_get_flash_type(u64 **smem_flash_type)
-+{
-+	size_t size;
-+
-+	*smem_flash_type = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_TYPE,
-+			    		&size);
-+
-+	if (IS_ERR(*smem_flash_type)) {
-+		pr_err("Unable to read flash type from SMEM\n");
-+		return -ENOENT;
-+	}
-+
-+	if (size != sizeof(**smem_flash_type)) {
-+		pr_err("Invalid flash type size in SMEM\n");
-+		return -EINVAL;
-+	}
-+
-+	return 0;
-+}
-+
-+static int qcom_smem_get_flash_partitions(struct smem_partition_table **pparts)
-+{
-+	size_t size;
-+
-+	*pparts = qcom_smem_get(SMEM_HOST_APPS, SMEM_AARM_PARTITION_TABLE,
-+				&size);
-+
-+	if (IS_ERR(*pparts)) {
-+		pr_err("Unable to read partition table from SMEM\n");
-+		return -ENOENT;
-+	}
-+
-+	return 0;
-+}
-+
-+static int of_dev_node_match(struct device *dev, const void *data)
-+{
-+	return dev->of_node == data;
-+}
-+
-+static bool is_spi_device(struct device_node *np)
-+{
-+	struct device *dev;
-+
-+	dev = bus_find_device(&spi_bus_type, NULL, np, of_dev_node_match);
-+	if (!dev)
-+		return false;
-+
-+	put_device(dev);
-+	return true;
-+}
-+
-+static int parse_qcom_smem_partitions(struct mtd_info *master,
-+				      const struct mtd_partition **pparts,
-+				      struct mtd_part_parser_data *data)
-+{
-+	struct smem_partition_table *smem_parts;
-+	u64 *smem_flash_type, *smem_blksz;
-+	struct mtd_partition *mtd_parts;
-+	struct device_node *of_node = master->dev.of_node;
-+	int i, ret;
-+
-+	/*
-+	 * SMEM will only store the partition table of the boot device.
-+	 * If this is not the boot device, do not return any partition.
-+	 */
-+	ret = qcom_smem_get_flash_type(&smem_flash_type);
-+	if (ret < 0)
-+		return ret;
-+
-+	if ((*smem_flash_type == SMEM_FLASH_NAND && !mtd_type_is_nand(master))
-+	    || (*smem_flash_type == SMEM_FLASH_SPI && !is_spi_device(of_node)))
-+		return 0;
-+
-+	/*
-+	 * Just for sanity purpose, make sure the block size in SMEM matches the
-+	 * block size of the MTD device
-+	 */
-+	ret = qcom_smem_get_flash_blksz(&smem_blksz);
-+	if (ret < 0)
-+		return ret;
-+
-+	if (*smem_blksz != master->erasesize) {
-+		pr_err("SMEM block size differs from MTD block size\n");
-+		return -EINVAL;
-+	}
-+
-+	/* Get partition pointer from SMEM */
-+	ret = qcom_smem_get_flash_partitions(&smem_parts);
-+	if (ret < 0)
-+		return ret;
-+
-+	if (memcmp(SMEM_PTABLE_MAGIC, smem_parts->magic,
-+		   sizeof(SMEM_PTABLE_MAGIC))) {
-+		pr_err("SMEM partition magic invalid\n");
-+		return -EINVAL;
-+	}
-+
-+	/* Allocate and populate the mtd structures */
-+	mtd_parts = kcalloc(le32_to_cpu(smem_parts->len), sizeof(*mtd_parts),
-+			    GFP_KERNEL);
-+	if (!mtd_parts)
-+		return -ENOMEM;
-+
-+	for (i = 0; i < smem_parts->len; i++) {
-+		struct smem_partition *s_part = &smem_parts->parts[i];
-+		struct mtd_partition *m_part = &mtd_parts[i];
-+
-+		m_part->name = s_part->name;
-+		m_part->size = le32_to_cpu(s_part->size) * (*smem_blksz);
-+		m_part->offset = le32_to_cpu(s_part->start) * (*smem_blksz);
-+
-+		/*
-+		 * The last SMEM partition may have its size marked as
-+		 * something like 0xffffffff, which means "until the end of the
-+		 * flash device". In this case, truncate it.
-+		 */
-+		if (m_part->offset + m_part->size > master->size)
-+			m_part->size = master->size - m_part->offset;
-+	}
-+
-+	*pparts = mtd_parts;
-+
-+	return smem_parts->len;
-+}
-+
-+static const struct of_device_id qcom_smem_of_match_table[] = {
-+	{ .compatible = "qcom,smem" },
-+	{},
-+};
-+MODULE_DEVICE_TABLE(of, qcom_smem_of_match_table);
-+
-+static struct mtd_part_parser qcom_smem_parser = {
-+	.owner = THIS_MODULE,
-+	.parse_fn = parse_qcom_smem_partitions,
-+	.name = "qcom-smem",
-+	.of_match_table = qcom_smem_of_match_table,
-+};
-+
-+static int __init qcom_smem_parser_init(void)
-+{
-+	register_mtd_parser(&qcom_smem_parser);
-+	return 0;
-+}
-+
-+static void __exit qcom_smem_parser_exit(void)
-+{
-+	deregister_mtd_parser(&qcom_smem_parser);
-+}
-+
-+module_init(qcom_smem_parser_init);
-+module_exit(qcom_smem_parser_exit);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Mathieu Olivari <[email protected]>");
-+MODULE_DESCRIPTION("Parsing code for SMEM based partition tables");

target/linux/ipq806x/patches-5.10/0061-mtd-rootfs-conflicts-with-OpenWrt-auto-mounting.patch

@@ -1,23 +0,0 @@
-From 5001f2e1a325b68dbf225bd17f69a4d3d975cca5 Mon Sep 17 00:00:00 2001
-From: John Crispin <[email protected]>
-Date: Thu, 9 Mar 2017 09:31:44 +0100
-Subject: [PATCH 61/69] mtd: "rootfs" conflicts with OpenWrt auto mounting
-
-Signed-off-by: John Crispin <[email protected]>
----
- drivers/mtd/parsers/qcom_smem_part.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
---- a/drivers/mtd/parsers/qcom_smem_part.c
-+++ b/drivers/mtd/parsers/qcom_smem_part.c
-@@ -189,6 +189,10 @@ static int parse_qcom_smem_partitions(st
- 		m_part->size = le32_to_cpu(s_part->size) * (*smem_blksz);
- 		m_part->offset = le32_to_cpu(s_part->start) * (*smem_blksz);
- 
-+		/* "rootfs" conflicts with OpenWrt auto mounting */
-+		if (mtd_type_is_nand(master) && !strcmp(m_part->name, "rootfs"))
-+			m_part->name = "ubi";
-+
- 		/*
- 		 * The last SMEM partition may have its size marked as
- 		 * something like 0xffffffff, which means "until the end of the

target/linux/ipq806x/patches-5.10/0002-dmaengine-Add-ADM-driver.patch → target/linux/ipq806x/patches-5.10/100-v5.11-dmaengine-qcom-add_ADM_driver.patch

@@ -1,86 +1,95 @@
-From 563fa24db4e529c5a3311928d73a8a90531ee527 Mon Sep 17 00:00:00 2001
-From: Thomas Pedersen <[email protected]>
-Date: Mon, 16 May 2016 17:58:51 -0700
-Subject: [PATCH 02/69] dmaengine: Add ADM driver
-
-Original patch by Andy Gross.
+From 5c9f8c2dbdbe53818bcde6aa6695e1331e5f841f Mon Sep 17 00:00:00 2001
+From: Jonathan McDowell <[email protected]>
+Date: Sat, 14 Nov 2020 14:02:33 +0000
+Subject: dmaengine: qcom: Add ADM driver
 
 Add the DMA engine driver for the QCOM Application Data Mover (ADM) DMA
 controller found in the MSM8x60 and IPQ/APQ8064 platforms.
 
 The ADM supports both memory to memory transactions and memory
-to/from peripheral device transactions.  The controller also provides flow
-control capabilities for transactions to/from peripheral devices.
+to/from peripheral device transactions.  The controller also provides
+flow control capabilities for transactions to/from peripheral devices.
+
+The initial release of this driver supports slave transfers to/from
+peripherals and also incorporates CRCI (client rate control interface)
+flow control.
 
-The initial release of this driver supports slave transfers to/from peripherals
-and also incorporates CRCI (client rate control interface) flow control.
+The hardware only supports a 32 bit physical address, so specifying
+!PHYS_ADDR_T_64BIT gives maximum COMPILE_TEST coverage without having to
+spend effort on kludging things in the code that will never actually be
+needed on real hardware.
 
 Signed-off-by: Andy Gross <[email protected]>
 Signed-off-by: Thomas Pedersen <[email protected]>
+Signed-off-by: Jonathan McDowell <[email protected]>
+Link: https://lore.kernel.org/r/[email protected]
+Signed-off-by: Vinod Koul <[email protected]>
 ---
- drivers/dma/qcom/Kconfig    |  10 +
+ drivers/dma/qcom/Kconfig    |  11 +
  drivers/dma/qcom/Makefile   |   1 +
- drivers/dma/qcom/qcom_adm.c | 900 ++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 911 insertions(+)
+ drivers/dma/qcom/qcom_adm.c | 903 ++++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 915 insertions(+)
  create mode 100644 drivers/dma/qcom/qcom_adm.c
 
+diff --git a/drivers/dma/qcom/Kconfig b/drivers/dma/qcom/Kconfig
+index 3bcb689162c67..0389d60d2604a 100644
 --- a/drivers/dma/qcom/Kconfig
 +++ b/drivers/dma/qcom/Kconfig
-@@ -28,3 +28,13 @@ config QCOM_HIDMA
- 	  (user to kernel, kernel to kernel, etc.).  It only supports
- 	  memcpy interface. The core is not intended for general
- 	  purpose slave DMA.
-+
+@@ -1,4 +1,15 @@
+ # SPDX-License-Identifier: GPL-2.0-only
 +config QCOM_ADM
 +	tristate "Qualcomm ADM support"
-+	depends on ARCH_QCOM || (COMPILE_TEST && OF && ARM)
++	depends on (ARCH_QCOM || COMPILE_TEST) && !PHYS_ADDR_T_64BIT
 +	select DMA_ENGINE
 +	select DMA_VIRTUAL_CHANNELS
-+	---help---
-+	  Enable support for the Qualcomm ADM DMA controller.  This controller
-+	  provides DMA capabilities for both general purpose and on-chip
-+	  peripheral devices.
++	help
++	  Enable support for the Qualcomm Application Data Mover (ADM) DMA
++	  controller, as present on MSM8x60, APQ8064, and IPQ8064 devices.
++	  This controller provides DMA capabilities for both general purpose
++	  and on-chip peripheral devices.
++
+ config QCOM_BAM_DMA
+ 	tristate "QCOM BAM DMA support"
+ 	depends on ARCH_QCOM || (COMPILE_TEST && OF && ARM)
+diff --git a/drivers/dma/qcom/Makefile b/drivers/dma/qcom/Makefile
+index 1ae92da88b0c9..346e643fbb6db 100644
 --- a/drivers/dma/qcom/Makefile
 +++ b/drivers/dma/qcom/Makefile
-@@ -4,3 +4,4 @@ obj-$(CONFIG_QCOM_HIDMA_MGMT) += hdma_mg
- hdma_mgmt-objs	 := hidma_mgmt.o hidma_mgmt_sys.o
- obj-$(CONFIG_QCOM_HIDMA) +=  hdma.o
- hdma-objs        := hidma_ll.o hidma.o hidma_dbg.o
+@@ -1,4 +1,5 @@
+ # SPDX-License-Identifier: GPL-2.0
 +obj-$(CONFIG_QCOM_ADM) += qcom_adm.o
+ obj-$(CONFIG_QCOM_BAM_DMA) += bam_dma.o
+ obj-$(CONFIG_QCOM_HIDMA_MGMT) += hdma_mgmt.o
+ hdma_mgmt-objs	 := hidma_mgmt.o hidma_mgmt_sys.o
+diff --git a/drivers/dma/qcom/qcom_adm.c b/drivers/dma/qcom/qcom_adm.c
+new file mode 100644
+index 0000000000000..9b6f8e050ecce
 --- /dev/null
 +++ b/drivers/dma/qcom/qcom_adm.c
-@@ -0,0 +1,914 @@
+@@ -0,0 +1,903 @@
++// SPDX-License-Identifier: GPL-2.0-only
 +/*
 + * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 and
-+ * only version 2 as published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
 + */
 +
-+#include <linux/kernel.h>
-+#include <linux/io.h>
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/device.h>
++#include <linux/dmaengine.h>
++#include <linux/dma-mapping.h>
 +#include <linux/init.h>
-+#include <linux/slab.h>
-+#include <linux/module.h>
 +#include <linux/interrupt.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/scatterlist.h>
-+#include <linux/device.h>
-+#include <linux/platform_device.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
 +#include <linux/of.h>
 +#include <linux/of_address.h>
 +#include <linux/of_irq.h>
 +#include <linux/of_dma.h>
++#include <linux/platform_device.h>
 +#include <linux/reset.h>
-+#include <linux/clk.h>
-+#include <linux/dmaengine.h>
++#include <linux/scatterlist.h>
++#include <linux/slab.h>
 +
 +#include "../dmaengine.h"
 +#include "../virt-dma.h"
@@ -90,10 +99,10 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +#define ADM_CI_MULTI			0x4
 +#define ADM_CRCI_MULTI			0x4
 +#define ADM_EE_MULTI			0x800
-+#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * chan)
-+#define ADM_EE_OFFS(ee)			(ADM_EE_MULTI * ee)
++#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * (chan))
++#define ADM_EE_OFFS(ee)			(ADM_EE_MULTI * (ee))
 +#define ADM_CHAN_EE_OFFS(chan, ee)	(ADM_CHAN_OFFS(chan) + ADM_EE_OFFS(ee))
-+#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * chan)
++#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * (chan))
 +#define ADM_CI_OFFS(ci)			(ADM_CHAN_OFF(ci))
 +#define ADM_CH_CMD_PTR(chan, ee)	(ADM_CHAN_EE_OFFS(chan, ee))
 +#define ADM_CH_RSLT(chan, ee)		(0x40 + ADM_CHAN_EE_OFFS(chan, ee))
@@ -102,62 +111,62 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +#define ADM_CH_CONF(chan)		(0x240 + ADM_CHAN_OFFS(chan))
 +#define ADM_CH_RSLT_CONF(chan, ee)	(0x300 + ADM_CHAN_EE_OFFS(chan, ee))
 +#define ADM_SEC_DOMAIN_IRQ_STATUS(ee)	(0x380 + ADM_EE_OFFS(ee))
-+#define ADM_CI_CONF(ci)			(0x390 + ci * ADM_CI_MULTI)
++#define ADM_CI_CONF(ci)			(0x390 + (ci) * ADM_CI_MULTI)
 +#define ADM_GP_CTL			0x3d8
-+#define ADM_CRCI_CTL(crci, ee)		(0x400 + crci * ADM_CRCI_MULTI + \
++#define ADM_CRCI_CTL(crci, ee)		(0x400 + (crci) * ADM_CRCI_MULTI + \
 +						ADM_EE_OFFS(ee))
 +
 +/* channel status */
-+#define ADM_CH_STATUS_VALID	BIT(1)
++#define ADM_CH_STATUS_VALID		BIT(1)
 +
 +/* channel result */
-+#define ADM_CH_RSLT_VALID	BIT(31)
-+#define ADM_CH_RSLT_ERR		BIT(3)
-+#define ADM_CH_RSLT_FLUSH	BIT(2)
-+#define ADM_CH_RSLT_TPD		BIT(1)
++#define ADM_CH_RSLT_VALID		BIT(31)
++#define ADM_CH_RSLT_ERR			BIT(3)
++#define ADM_CH_RSLT_FLUSH		BIT(2)
++#define ADM_CH_RSLT_TPD			BIT(1)
 +
 +/* channel conf */
 +#define ADM_CH_CONF_SHADOW_EN		BIT(12)
 +#define ADM_CH_CONF_MPU_DISABLE		BIT(11)
 +#define ADM_CH_CONF_PERM_MPU_CONF	BIT(9)
 +#define ADM_CH_CONF_FORCE_RSLT_EN	BIT(7)
-+#define ADM_CH_CONF_SEC_DOMAIN(ee)	(((ee & 0x3) << 4) | ((ee & 0x4) << 11))
++#define ADM_CH_CONF_SEC_DOMAIN(ee)	((((ee) & 0x3) << 4) | (((ee) & 0x4) << 11))
 +
 +/* channel result conf */
 +#define ADM_CH_RSLT_CONF_FLUSH_EN	BIT(1)
 +#define ADM_CH_RSLT_CONF_IRQ_EN		BIT(0)
 +
 +/* CRCI CTL */
-+#define ADM_CRCI_CTL_MUX_SEL	BIT(18)
-+#define ADM_CRCI_CTL_RST	BIT(17)
++#define ADM_CRCI_CTL_MUX_SEL		BIT(18)
++#define ADM_CRCI_CTL_RST		BIT(17)
 +
 +/* CI configuration */
-+#define ADM_CI_RANGE_END(x)	(x << 24)
-+#define ADM_CI_RANGE_START(x)	(x << 16)
-+#define ADM_CI_BURST_4_WORDS	BIT(2)
-+#define ADM_CI_BURST_8_WORDS	BIT(3)
++#define ADM_CI_RANGE_END(x)		((x) << 24)
++#define ADM_CI_RANGE_START(x)		((x) << 16)
++#define ADM_CI_BURST_4_WORDS		BIT(2)
++#define ADM_CI_BURST_8_WORDS		BIT(3)
 +
 +/* GP CTL */
-+#define ADM_GP_CTL_LP_EN	BIT(12)
-+#define ADM_GP_CTL_LP_CNT(x)	(x << 8)
++#define ADM_GP_CTL_LP_EN		BIT(12)
++#define ADM_GP_CTL_LP_CNT(x)		((x) << 8)
 +
 +/* Command pointer list entry */
-+#define ADM_CPLE_LP		BIT(31)
-+#define ADM_CPLE_CMD_PTR_LIST	BIT(29)
++#define ADM_CPLE_LP			BIT(31)
++#define ADM_CPLE_CMD_PTR_LIST		BIT(29)
 +
 +/* Command list entry */
-+#define ADM_CMD_LC		BIT(31)
-+#define ADM_CMD_DST_CRCI(n)	(((n) & 0xf) << 7)
-+#define ADM_CMD_SRC_CRCI(n)	(((n) & 0xf) << 3)
++#define ADM_CMD_LC			BIT(31)
++#define ADM_CMD_DST_CRCI(n)		(((n) & 0xf) << 7)
++#define ADM_CMD_SRC_CRCI(n)		(((n) & 0xf) << 3)
 +
-+#define ADM_CMD_TYPE_SINGLE	0x0
-+#define ADM_CMD_TYPE_BOX	0x3
++#define ADM_CMD_TYPE_SINGLE		0x0
++#define ADM_CMD_TYPE_BOX		0x3
 +
-+#define ADM_CRCI_MUX_SEL	BIT(4)
-+#define ADM_DESC_ALIGN		8
-+#define ADM_MAX_XFER		(SZ_64K-1)
-+#define ADM_MAX_ROWS		(SZ_64K-1)
-+#define ADM_MAX_CHANNELS	16
++#define ADM_CRCI_MUX_SEL		BIT(4)
++#define ADM_DESC_ALIGN			8
++#define ADM_MAX_XFER			(SZ_64K - 1)
++#define ADM_MAX_ROWS			(SZ_64K - 1)
++#define ADM_MAX_CHANNELS		16
 +
 +struct adm_desc_hw_box {
 +	u32 cmd;
@@ -255,7 +264,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	case 32:
 +	case 64:
 +	case 128:
-+		ret = ffs(burst>>4) - 1;
++		ret = ffs(burst >> 4) - 1;
 +		break;
 +	case 192:
 +		ret = 4;
@@ -281,9 +290,10 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * @burst: Burst size of transaction
 + * @direction: DMA transfer direction
 + */
-+static void *adm_process_fc_descriptors(struct adm_chan *achan,
-+	void *desc, struct scatterlist *sg, u32 crci, u32 burst,
-+	enum dma_transfer_direction direction)
++static void *adm_process_fc_descriptors(struct adm_chan *achan, void *desc,
++					struct scatterlist *sg, u32 crci,
++					u32 burst,
++					enum dma_transfer_direction direction)
 +{
 +	struct adm_desc_hw_box *box_desc = NULL;
 +	struct adm_desc_hw_single *single_desc;
@@ -349,9 +359,9 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * @sg: Scatterlist entry
 + * @direction: DMA transfer direction
 + */
-+static void *adm_process_non_fc_descriptors(struct adm_chan *achan,
-+	void *desc, struct scatterlist *sg,
-+	enum dma_transfer_direction direction)
++static void *adm_process_non_fc_descriptors(struct adm_chan *achan, void *desc,
++					    struct scatterlist *sg,
++					    enum dma_transfer_direction direction)
 +{
 +	struct adm_desc_hw_single *single_desc;
 +	u32 remainder = sg_dma_len(sg);
@@ -398,9 +408,11 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * @context: transfer context (unused)
 + */
 +static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
-+	struct scatterlist *sgl, unsigned int sg_len,
-+	enum dma_transfer_direction direction, unsigned long flags,
-+	void *context)
++							 struct scatterlist *sgl,
++							 unsigned int sg_len,
++							 enum dma_transfer_direction direction,
++							 unsigned long flags,
++							 void *context)
 +{
 +	struct adm_chan *achan = to_adm_chan(chan);
 +	struct adm_device *adev = achan->adev;
@@ -427,7 +439,6 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* if using flow control, validate burst and crci values */
 +	if (achan->slave.device_fc) {
-+
 +		blk_size = adm_get_blksize(burst);
 +		if (blk_size < 0) {
 +			dev_err(adev->dev, "invalid burst value: %d\n",
@@ -455,7 +466,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +		}
 +	}
 +
-+	async_desc = kzalloc(sizeof(*async_desc), GFP_ATOMIC);
++	async_desc = kzalloc(sizeof(*async_desc), GFP_NOWAIT);
 +	if (!async_desc)
 +		return ERR_PTR(-ENOMEM);
 +
@@ -468,7 +479,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +				box_count * sizeof(struct adm_desc_hw_box) +
 +				sizeof(*cple) + 2 * ADM_DESC_ALIGN;
 +
-+	async_desc->cpl = kzalloc(async_desc->dma_len, GFP_ATOMIC);
++	async_desc->cpl = kzalloc(async_desc->dma_len, GFP_NOWAIT);
 +	if (!async_desc->cpl)
 +		goto free;
 +
@@ -483,10 +494,10 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +		if (achan->slave.device_fc)
 +			desc = adm_process_fc_descriptors(achan, desc, sg, crci,
-+							burst, direction);
++							  burst, direction);
 +		else
 +			desc = adm_process_non_fc_descriptors(achan, desc, sg,
-+							   direction);
++							      direction);
 +	}
 +
 +	async_desc->dma_addr = dma_map_single(adev->dev, async_desc->cpl,
@@ -532,7 +543,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* send flush command to terminate current transaction */
 +	writel_relaxed(0x0,
-+		adev->regs + ADM_CH_FLUSH_STATE0(achan->id, adev->ee));
++		       adev->regs + ADM_CH_FLUSH_STATE0(achan->id, adev->ee));
 +
 +	spin_unlock_irqrestore(&achan->vc.lock, flags);
 +
@@ -586,7 +597,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +		       adev->regs + ADM_CH_CONF(achan->id));
 +
 +		writel(ADM_CH_RSLT_CONF_IRQ_EN | ADM_CH_RSLT_CONF_FLUSH_EN,
-+			adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
++		       adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
 +
 +		achan->initialized = 1;
 +	}
@@ -594,7 +605,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	/* set the crci block size if this transaction requires CRCI */
 +	if (async_desc->crci) {
 +		writel(async_desc->mux | async_desc->blk_size,
-+			adev->regs + ADM_CRCI_CTL(async_desc->crci, adev->ee));
++		       adev->regs + ADM_CRCI_CTL(async_desc->crci, adev->ee));
 +	}
 +
 +	/* make sure IRQ enable doesn't get reordered */
@@ -602,7 +613,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* write next command list out to the CMD FIFO */
 +	writel(ALIGN(async_desc->dma_addr, ADM_DESC_ALIGN) >> 3,
-+		adev->regs + ADM_CH_CMD_PTR(achan->id, adev->ee));
++	       adev->regs + ADM_CH_CMD_PTR(achan->id, adev->ee));
 +}
 +
 +/**
@@ -628,7 +639,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +		if (srcs & BIT(i)) {
 +			status = readl_relaxed(adev->regs +
-+				ADM_CH_STATUS_SD(i, adev->ee));
++					       ADM_CH_STATUS_SD(i, adev->ee));
 +
 +			/* if no result present, skip */
 +			if (!(status & ADM_CH_STATUS_VALID))
@@ -673,7 +684,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * Return status of dma transaction
 + */
 +static enum dma_status adm_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
-+	struct dma_tx_state *txstate)
++				     struct dma_tx_state *txstate)
 +{
 +	struct adm_chan *achan = to_adm_chan(chan);
 +	struct virt_dma_desc *vd;
@@ -697,7 +708,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	 * residue is either the full length if it is in the issued list, or 0
 +	 * if it is in progress.  We have no reliable way of determining
 +	 * anything inbetween
-+	*/
++	 */
 +	dma_set_residue(txstate, residue);
 +
 +	if (achan->error)
@@ -741,7 +752,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +}
 +
 +static void adm_channel_init(struct adm_device *adev, struct adm_chan *achan,
-+	u32 index)
++			     u32 index)
 +{
 +	achan->id = index;
 +	achan->adev = adev;
@@ -753,7 +764,6 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +static int adm_dma_probe(struct platform_device *pdev)
 +{
 +	struct adm_device *adev;
-+	struct resource *iores;
 +	int ret;
 +	u32 i;
 +
@@ -763,8 +773,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	adev->dev = &pdev->dev;
 +
-+	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	adev->regs = devm_ioremap_resource(&pdev->dev, iores);
++	adev->regs = devm_platform_ioremap_resource(pdev, 0);
 +	if (IS_ERR(adev->regs))
 +		return PTR_ERR(adev->regs);
 +
@@ -782,50 +791,44 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	if (IS_ERR(adev->core_clk))
 +		return PTR_ERR(adev->core_clk);
 +
-+	ret = clk_prepare_enable(adev->core_clk);
-+	if (ret) {
-+		dev_err(adev->dev, "failed to prepare/enable core clock\n");
-+		return ret;
-+	}
-+
 +	adev->iface_clk = devm_clk_get(adev->dev, "iface");
-+	if (IS_ERR(adev->iface_clk)) {
-+		ret = PTR_ERR(adev->iface_clk);
-+		goto err_disable_core_clk;
-+	}
-+
-+	ret = clk_prepare_enable(adev->iface_clk);
-+	if (ret) {
-+		dev_err(adev->dev, "failed to prepare/enable iface clock\n");
-+		goto err_disable_core_clk;
-+	}
++	if (IS_ERR(adev->iface_clk))
++		return PTR_ERR(adev->iface_clk);
 +
-+	adev->clk_reset = devm_reset_control_get(&pdev->dev, "clk");
++	adev->clk_reset = devm_reset_control_get_exclusive(&pdev->dev, "clk");
 +	if (IS_ERR(adev->clk_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 reset\n");
-+		ret = PTR_ERR(adev->clk_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->clk_reset);
 +	}
 +
-+	adev->c0_reset = devm_reset_control_get(&pdev->dev, "c0");
++	adev->c0_reset = devm_reset_control_get_exclusive(&pdev->dev, "c0");
 +	if (IS_ERR(adev->c0_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 C0 reset\n");
-+		ret = PTR_ERR(adev->c0_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->c0_reset);
 +	}
 +
-+	adev->c1_reset = devm_reset_control_get(&pdev->dev, "c1");
++	adev->c1_reset = devm_reset_control_get_exclusive(&pdev->dev, "c1");
 +	if (IS_ERR(adev->c1_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 C1 reset\n");
-+		ret = PTR_ERR(adev->c1_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->c1_reset);
 +	}
 +
-+	adev->c2_reset = devm_reset_control_get(&pdev->dev, "c2");
++	adev->c2_reset = devm_reset_control_get_exclusive(&pdev->dev, "c2");
 +	if (IS_ERR(adev->c2_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 C2 reset\n");
-+		ret = PTR_ERR(adev->c2_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->c2_reset);
++	}
++
++	ret = clk_prepare_enable(adev->core_clk);
++	if (ret) {
++		dev_err(adev->dev, "failed to prepare/enable core clock\n");
++		return ret;
++	}
++
++	ret = clk_prepare_enable(adev->iface_clk);
++	if (ret) {
++		dev_err(adev->dev, "failed to prepare/enable iface clock\n");
++		goto err_disable_core_clk;
 +	}
 +
 +	reset_control_assert(adev->clk_reset);
@@ -833,13 +836,15 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	reset_control_assert(adev->c1_reset);
 +	reset_control_assert(adev->c2_reset);
 +
++	udelay(2);
++
 +	reset_control_deassert(adev->clk_reset);
 +	reset_control_deassert(adev->c0_reset);
 +	reset_control_deassert(adev->c1_reset);
 +	reset_control_deassert(adev->c2_reset);
 +
 +	adev->channels = devm_kcalloc(adev->dev, ADM_MAX_CHANNELS,
-+				sizeof(*adev->channels), GFP_KERNEL);
++				      sizeof(*adev->channels), GFP_KERNEL);
 +
 +	if (!adev->channels) {
 +		ret = -ENOMEM;
@@ -859,16 +864,16 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* configure client interfaces */
 +	writel(ADM_CI_RANGE_START(0x40) | ADM_CI_RANGE_END(0xb0) |
-+		ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(0));
++	       ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(0));
 +	writel(ADM_CI_RANGE_START(0x2a) | ADM_CI_RANGE_END(0x2c) |
-+		ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(1));
++	       ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(1));
 +	writel(ADM_CI_RANGE_START(0x12) | ADM_CI_RANGE_END(0x28) |
-+		ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(2));
++	       ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(2));
 +	writel(ADM_GP_CTL_LP_EN | ADM_GP_CTL_LP_CNT(0xf),
-+		adev->regs + ADM_GP_CTL);
++	       adev->regs + ADM_GP_CTL);
 +
 +	ret = devm_request_irq(adev->dev, adev->irq, adm_dma_irq,
-+			0, "adm_dma", adev);
++			       0, "adm_dma", adev);
 +	if (ret)
 +		goto err_disable_clks;
 +
@@ -933,6 +938,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +		/* mask IRQs for this channel/EE pair */
 +		writel(0, adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
 +
++		tasklet_kill(&adev->channels[i].vc.task);
 +		adm_terminate_all(&adev->channels[i].vc.chan);
 +	}
 +
@@ -964,3 +970,6 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +MODULE_AUTHOR("Andy Gross <[email protected]>");
 +MODULE_DESCRIPTION("QCOM ADM DMA engine driver");
 +MODULE_LICENSE("GPL v2");
+-- 
+cgit 1.2.3-1.el7
+

target/linux/ipq806x/patches-5.10/101-5.12-mtd-parsers-Add-Qcom-SMEM-parser.patch

@@ -0,0 +1,227 @@
+From 803eb124e1a64e42888542c3444bfe6dac412c7f Mon Sep 17 00:00:00 2001
+From: Manivannan Sadhasivam <[email protected]>
+Date: Mon, 4 Jan 2021 09:41:35 +0530
+Subject: mtd: parsers: Add Qcom SMEM parser
+
+NAND based Qualcomm platforms have the partition table populated in the
+Shared Memory (SMEM). Hence, add a parser for parsing the partitions
+from it.
+
+Signed-off-by: Manivannan Sadhasivam <[email protected]>
+Signed-off-by: Miquel Raynal <[email protected]>
+Link: https://lore.kernel.org/linux-mtd/[email protected]
+---
+ drivers/mtd/parsers/Kconfig        |   8 ++
+ drivers/mtd/parsers/Makefile       |   1 +
+ drivers/mtd/parsers/qcomsmempart.c | 170 +++++++++++++++++++++++++++++++++++++
+ 3 files changed, 179 insertions(+)
+ create mode 100644 drivers/mtd/parsers/qcomsmempart.c
+
+diff --git a/drivers/mtd/parsers/Kconfig b/drivers/mtd/parsers/Kconfig
+index e72354322f628..d90c302290522 100644
+--- a/drivers/mtd/parsers/Kconfig
++++ b/drivers/mtd/parsers/Kconfig
+@@ -160,6 +160,14 @@ config MTD_REDBOOT_PARTS_READONLY
+ 	  'FIS directory' images, enable this option.
+ 
+ endif # MTD_REDBOOT_PARTS
++
++config MTD_QCOMSMEM_PARTS
++	tristate "Qualcomm SMEM NAND flash partition parser"
++	depends on MTD_NAND_QCOM || COMPILE_TEST
++	depends on QCOM_SMEM
++	help
++	  This provides support for parsing partitions from Shared Memory (SMEM)
++	  for NAND flash on Qualcomm platforms.
+ 
+ config MTD_ROUTERBOOT_PARTS
+ 	tristate "RouterBoot flash partition parser"
+diff --git a/drivers/mtd/parsers/Makefile b/drivers/mtd/parsers/Makefile
+index b0c5f62f9e858..50eb0b0a22105 100644
+--- a/drivers/mtd/parsers/Makefile
++++ b/drivers/mtd/parsers/Makefile
+@@ -9,4 +9,5 @@ obj-$(CONFIG_MTD_AFS_PARTS)		+= afs.o
+ obj-$(CONFIG_MTD_PARSER_TRX)		+= parser_trx.o
+ obj-$(CONFIG_MTD_SHARPSL_PARTS)		+= sharpslpart.o
+ obj-$(CONFIG_MTD_REDBOOT_PARTS)		+= redboot.o
++obj-$(CONFIG_MTD_QCOMSMEM_PARTS)	+= qcomsmempart.o
+ obj-$(CONFIG_MTD_ROUTERBOOT_PARTS)		+= routerbootpart.o
+diff --git a/drivers/mtd/parsers/qcomsmempart.c b/drivers/mtd/parsers/qcomsmempart.c
+new file mode 100644
+index 0000000000000..808cb33d71f8e
+--- /dev/null
++++ b/drivers/mtd/parsers/qcomsmempart.c
+@@ -0,0 +1,170 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * Qualcomm SMEM NAND flash partition parser
++ *
++ * Copyright (C) 2020, Linaro Ltd.
++ */
++
++#include <linux/ctype.h>
++#include <linux/module.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
++#include <linux/slab.h>
++#include <linux/soc/qcom/smem.h>
++
++#define SMEM_AARM_PARTITION_TABLE	9
++#define SMEM_APPS			0
++
++#define SMEM_FLASH_PART_MAGIC1		0x55ee73aa
++#define SMEM_FLASH_PART_MAGIC2		0xe35ebddb
++#define SMEM_FLASH_PTABLE_V3		3
++#define SMEM_FLASH_PTABLE_V4		4
++#define SMEM_FLASH_PTABLE_MAX_PARTS_V3	16
++#define SMEM_FLASH_PTABLE_MAX_PARTS_V4	48
++#define SMEM_FLASH_PTABLE_HDR_LEN	(4 * sizeof(u32))
++#define SMEM_FLASH_PTABLE_NAME_SIZE	16
++
++/**
++ * struct smem_flash_pentry - SMEM Flash partition entry
++ * @name: Name of the partition
++ * @offset: Offset in blocks
++ * @length: Length of the partition in blocks
++ * @attr: Flags for this partition
++ */
++struct smem_flash_pentry {
++	char name[SMEM_FLASH_PTABLE_NAME_SIZE];
++	__le32 offset;
++	__le32 length;
++	u8 attr;
++} __packed __aligned(4);
++
++/**
++ * struct smem_flash_ptable - SMEM Flash partition table
++ * @magic1: Partition table Magic 1
++ * @magic2: Partition table Magic 2
++ * @version: Partition table version
++ * @numparts: Number of partitions in this ptable
++ * @pentry: Flash partition entries belonging to this ptable
++ */
++struct smem_flash_ptable {
++	__le32 magic1;
++	__le32 magic2;
++	__le32 version;
++	__le32 numparts;
++	struct smem_flash_pentry pentry[SMEM_FLASH_PTABLE_MAX_PARTS_V4];
++} __packed __aligned(4);
++
++static int parse_qcomsmem_part(struct mtd_info *mtd,
++			       const struct mtd_partition **pparts,
++			       struct mtd_part_parser_data *data)
++{
++	struct smem_flash_pentry *pentry;
++	struct smem_flash_ptable *ptable;
++	size_t len = SMEM_FLASH_PTABLE_HDR_LEN;
++	struct mtd_partition *parts;
++	int ret, i, numparts;
++	char *name, *c;
++
++	pr_debug("Parsing partition table info from SMEM\n");
++	ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len);
++	if (IS_ERR(ptable)) {
++		pr_err("Error reading partition table header\n");
++		return PTR_ERR(ptable);
++	}
++
++	/* Verify ptable magic */
++	if (le32_to_cpu(ptable->magic1) != SMEM_FLASH_PART_MAGIC1 ||
++	    le32_to_cpu(ptable->magic2) != SMEM_FLASH_PART_MAGIC2) {
++		pr_err("Partition table magic verification failed\n");
++		return -EINVAL;
++	}
++
++	/* Ensure that # of partitions is less than the max we have allocated */
++	numparts = le32_to_cpu(ptable->numparts);
++	if (numparts > SMEM_FLASH_PTABLE_MAX_PARTS_V4) {
++		pr_err("Partition numbers exceed the max limit\n");
++		return -EINVAL;
++	}
++
++	/* Find out length of partition data based on table version */
++	if (le32_to_cpu(ptable->version) <= SMEM_FLASH_PTABLE_V3) {
++		len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V3 *
++			sizeof(struct smem_flash_pentry);
++	} else if (le32_to_cpu(ptable->version) == SMEM_FLASH_PTABLE_V4) {
++		len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V4 *
++			sizeof(struct smem_flash_pentry);
++	} else {
++		pr_err("Unknown ptable version (%d)", le32_to_cpu(ptable->version));
++		return -EINVAL;
++	}
++
++	/*
++	 * Now that the partition table header has been parsed, verified
++	 * and the length of the partition table calculated, read the
++	 * complete partition table
++	 */
++	ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len);
++	if (IS_ERR_OR_NULL(ptable)) {
++		pr_err("Error reading partition table\n");
++		return PTR_ERR(ptable);
++	}
++
++	parts = kcalloc(numparts, sizeof(*parts), GFP_KERNEL);
++	if (!parts)
++		return -ENOMEM;
++
++	for (i = 0; i < numparts; i++) {
++		pentry = &ptable->pentry[i];
++		if (pentry->name[0] == '\0')
++			continue;
++
++		name = kstrdup(pentry->name, GFP_KERNEL);
++		if (!name) {
++			ret = -ENOMEM;
++			goto out_free_parts;
++		}
++
++		/* Convert name to lower case */
++		for (c = name; *c != '\0'; c++)
++			*c = tolower(*c);
++
++		parts[i].name = name;
++		parts[i].offset = le32_to_cpu(pentry->offset) * mtd->erasesize;
++		parts[i].mask_flags = pentry->attr;
++		parts[i].size = le32_to_cpu(pentry->length) * mtd->erasesize;
++		pr_debug("%d: %s offs=0x%08x size=0x%08x attr:0x%08x\n",
++			 i, pentry->name, le32_to_cpu(pentry->offset),
++			 le32_to_cpu(pentry->length), pentry->attr);
++	}
++
++	pr_debug("SMEM partition table found: ver: %d len: %d\n",
++		 le32_to_cpu(ptable->version), numparts);
++	*pparts = parts;
++
++	return numparts;
++
++out_free_parts:
++	while (--i >= 0)
++		kfree(parts[i].name);
++	kfree(parts);
++	*pparts = NULL;
++
++	return ret;
++}
++
++static const struct of_device_id qcomsmem_of_match_table[] = {
++	{ .compatible = "qcom,smem-part" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, qcomsmem_of_match_table);
++
++static struct mtd_part_parser mtd_parser_qcomsmem = {
++	.parse_fn = parse_qcomsmem_part,
++	.name = "qcomsmem",
++	.of_match_table = qcomsmem_of_match_table,
++};
++module_mtd_part_parser(mtd_parser_qcomsmem);
++
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Manivannan Sadhasivam <[email protected]>");
++MODULE_DESCRIPTION("Qualcomm SMEM NAND flash partition parser");
+-- 
+cgit 1.2.3-1.el7
+

target/linux/ipq806x/patches-5.10/102-mtd-rootfs-conflicts-with-OpenWrt-auto-mounting.patch

@@ -0,0 +1,24 @@
+From 5001f2e1a325b68dbf225bd17f69a4d3d975cca5 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Thu, 9 Mar 2017 09:31:44 +0100
+Subject: [PATCH 61/69] mtd: "rootfs" conflicts with OpenWrt auto mounting
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/mtd/parsers/qcomsmempart.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/mtd/parsers/qcomsmempart.c
++++ b/drivers/mtd/parsers/qcomsmempart.c
+@@ -189,6 +189,11 @@ static int parse_qcomsmem_part(st
+ 		parts[i].offset = le32_to_cpu(pentry->offset) * mtd->erasesize;
+ 		parts[i].mask_flags = pentry->attr;
+ 		parts[i].size = le32_to_cpu(pentry->length) * mtd->erasesize;
++
++		/* "rootfs" conflicts with OpenWrt auto mounting */
++		if (mtd_type_is_nand(mtd) && !strcmp(name, "rootfs"))
++			parts[i].name = "ubi";
++
+ 		pr_debug("%d: %s offs=0x%08x size=0x%08x attr:0x%08x\n",
+ 			 i, pentry->name, le32_to_cpu(pentry->offset),
+ 			 le32_to_cpu(pentry->length), pentry->attr);

target/linux/ipq806x/patches-5.4/0031-mtd-add-SMEM-parser-for-QCOM-platforms.patch

@@ -1,282 +0,0 @@
-From d8eeb4de90e968ba32d956728c866f20752cf2c3 Mon Sep 17 00:00:00 2001
-From: Mathieu Olivari <[email protected]>
-Date: Thu, 9 Mar 2017 08:18:08 +0100
-Subject: [PATCH 31/69] mtd: add SMEM parser for QCOM platforms
-
-On QCOM platforms using MTD devices storage (such as IPQ806x), SMEM is
-used to store partition layout. This new parser can now be used to read
-SMEM and use it to register an MTD layout according to its content.
-
-Signed-off-by: Mathieu Olivari <[email protected]>
-Signed-off-by: Ram Chandra Jangir <[email protected]>
----
- drivers/mtd/parsers/Kconfig          |   7 ++
- drivers/mtd/parsers/Makefile         |   1 +
- drivers/mtd/parsers/qcom_smem_part.c | 228 +++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 236 insertions(+)
- create mode 100644 drivers/mtd/parsers/qcom_smem_part.c
-
---- a/drivers/mtd/parsers/Kconfig
-+++ b/drivers/mtd/parsers/Kconfig
-@@ -138,6 +138,13 @@ config MTD_PARSER_TRX
- 	  This driver will parse TRX header and report at least two partitions:
- 	  kernel and rootfs.
- 
-+config MTD_QCOM_SMEM_PARTS
-+	tristate "QCOM SMEM partitioning support"
-+	depends on QCOM_SMEM
-+	help
-+	  This provides partitions parser for QCOM devices using SMEM
-+	  such as IPQ806x.
-+
- config MTD_SHARPSL_PARTS
- 	tristate "Sharp SL Series NAND flash partition parser"
- 	depends on MTD_NAND_SHARPSL || MTD_NAND_TMIO || COMPILE_TEST
---- a/drivers/mtd/parsers/Makefile
-+++ b/drivers/mtd/parsers/Makefile
-@@ -11,6 +11,7 @@ ofpart-$(CONFIG_MTD_OF_PARTS_LINKSYS_NS)
- obj-$(CONFIG_MTD_PARSER_IMAGETAG)	+= parser_imagetag.o
- obj-$(CONFIG_MTD_AFS_PARTS)		+= afs.o
- obj-$(CONFIG_MTD_PARSER_TRX)		+= parser_trx.o
-+obj-$(CONFIG_MTD_QCOM_SMEM_PARTS)		+= qcom_smem_part.o
- obj-$(CONFIG_MTD_SHARPSL_PARTS)		+= sharpslpart.o
- obj-$(CONFIG_MTD_REDBOOT_PARTS)		+= redboot.o
- obj-$(CONFIG_MTD_ROUTERBOOT_PARTS)		+= routerbootpart.o
---- /dev/null
-+++ b/drivers/mtd/parsers/qcom_smem_part.c
-@@ -0,0 +1,235 @@
-+/*
-+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 and
-+ * only version 2 as published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/device.h>
-+#include <linux/slab.h>
-+
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/spi/spi.h>
-+#include <linux/module.h>
-+
-+#include <linux/soc/qcom/smem.h>
-+
-+/* Processor/host identifier for the application processor */
-+#define SMEM_HOST_APPS			0
-+
-+/* SMEM items index */
-+#define SMEM_AARM_PARTITION_TABLE	9
-+#define SMEM_BOOT_FLASH_TYPE		421
-+#define SMEM_BOOT_FLASH_BLOCK_SIZE	424
-+
-+/* SMEM Flash types */
-+#define SMEM_FLASH_NAND			2
-+#define SMEM_FLASH_SPI			6
-+
-+#define SMEM_PART_NAME_SZ		16
-+#define SMEM_PARTS_MAX			32
-+
-+struct smem_partition {
-+	char name[SMEM_PART_NAME_SZ];
-+	__le32 start;
-+	__le32 size;
-+	__le32 attr;
-+};
-+
-+struct smem_partition_table {
-+	u8 magic[8];
-+	__le32 version;
-+	__le32 len;
-+	struct smem_partition parts[SMEM_PARTS_MAX];
-+};
-+
-+/* SMEM Magic values in partition table */
-+static const u8 SMEM_PTABLE_MAGIC[] = {
-+	0xaa, 0x73, 0xee, 0x55,
-+	0xdb, 0xbd, 0x5e, 0xe3,
-+};
-+
-+static int qcom_smem_get_flash_blksz(u64 **smem_blksz)
-+{
-+	size_t size;
-+
-+	*smem_blksz = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_BLOCK_SIZE,
-+			    	    &size);
-+
-+	if (IS_ERR(*smem_blksz)) {
-+		pr_err("Unable to read flash blksz from SMEM\n");
-+		return -ENOENT;
-+	}
-+
-+	if (size != sizeof(**smem_blksz)) {
-+		pr_err("Invalid flash blksz size in SMEM\n");
-+		return -EINVAL;
-+	}
-+
-+	return 0;
-+}
-+
-+static int qcom_smem_get_flash_type(u64 **smem_flash_type)
-+{
-+	size_t size;
-+
-+	*smem_flash_type = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_TYPE,
-+			    		&size);
-+
-+	if (IS_ERR(*smem_flash_type)) {
-+		pr_err("Unable to read flash type from SMEM\n");
-+		return -ENOENT;
-+	}
-+
-+	if (size != sizeof(**smem_flash_type)) {
-+		pr_err("Invalid flash type size in SMEM\n");
-+		return -EINVAL;
-+	}
-+
-+	return 0;
-+}
-+
-+static int qcom_smem_get_flash_partitions(struct smem_partition_table **pparts)
-+{
-+	size_t size;
-+
-+	*pparts = qcom_smem_get(SMEM_HOST_APPS, SMEM_AARM_PARTITION_TABLE,
-+				&size);
-+
-+	if (IS_ERR(*pparts)) {
-+		pr_err("Unable to read partition table from SMEM\n");
-+		return -ENOENT;
-+	}
-+
-+	return 0;
-+}
-+
-+static int of_dev_node_match(struct device *dev, const void *data)
-+{
-+	return dev->of_node == data;
-+}
-+
-+static bool is_spi_device(struct device_node *np)
-+{
-+	struct device *dev;
-+
-+	dev = bus_find_device(&spi_bus_type, NULL, np, of_dev_node_match);
-+	if (!dev)
-+		return false;
-+
-+	put_device(dev);
-+	return true;
-+}
-+
-+static int parse_qcom_smem_partitions(struct mtd_info *master,
-+				      const struct mtd_partition **pparts,
-+				      struct mtd_part_parser_data *data)
-+{
-+	struct smem_partition_table *smem_parts;
-+	u64 *smem_flash_type, *smem_blksz;
-+	struct mtd_partition *mtd_parts;
-+	struct device_node *of_node = master->dev.of_node;
-+	int i, ret;
-+
-+	/*
-+	 * SMEM will only store the partition table of the boot device.
-+	 * If this is not the boot device, do not return any partition.
-+	 */
-+	ret = qcom_smem_get_flash_type(&smem_flash_type);
-+	if (ret < 0)
-+		return ret;
-+
-+	if ((*smem_flash_type == SMEM_FLASH_NAND && !mtd_type_is_nand(master))
-+	    || (*smem_flash_type == SMEM_FLASH_SPI && !is_spi_device(of_node)))
-+		return 0;
-+
-+	/*
-+	 * Just for sanity purpose, make sure the block size in SMEM matches the
-+	 * block size of the MTD device
-+	 */
-+	ret = qcom_smem_get_flash_blksz(&smem_blksz);
-+	if (ret < 0)
-+		return ret;
-+
-+	if (*smem_blksz != master->erasesize) {
-+		pr_err("SMEM block size differs from MTD block size\n");
-+		return -EINVAL;
-+	}
-+
-+	/* Get partition pointer from SMEM */
-+	ret = qcom_smem_get_flash_partitions(&smem_parts);
-+	if (ret < 0)
-+		return ret;
-+
-+	if (memcmp(SMEM_PTABLE_MAGIC, smem_parts->magic,
-+		   sizeof(SMEM_PTABLE_MAGIC))) {
-+		pr_err("SMEM partition magic invalid\n");
-+		return -EINVAL;
-+	}
-+
-+	/* Allocate and populate the mtd structures */
-+	mtd_parts = kcalloc(le32_to_cpu(smem_parts->len), sizeof(*mtd_parts),
-+			    GFP_KERNEL);
-+	if (!mtd_parts)
-+		return -ENOMEM;
-+
-+	for (i = 0; i < smem_parts->len; i++) {
-+		struct smem_partition *s_part = &smem_parts->parts[i];
-+		struct mtd_partition *m_part = &mtd_parts[i];
-+
-+		m_part->name = s_part->name;
-+		m_part->size = le32_to_cpu(s_part->size) * (*smem_blksz);
-+		m_part->offset = le32_to_cpu(s_part->start) * (*smem_blksz);
-+
-+		/*
-+		 * The last SMEM partition may have its size marked as
-+		 * something like 0xffffffff, which means "until the end of the
-+		 * flash device". In this case, truncate it.
-+		 */
-+		if (m_part->offset + m_part->size > master->size)
-+			m_part->size = master->size - m_part->offset;
-+	}
-+
-+	*pparts = mtd_parts;
-+
-+	return smem_parts->len;
-+}
-+
-+static const struct of_device_id qcom_smem_of_match_table[] = {
-+	{ .compatible = "qcom,smem" },
-+	{},
-+};
-+MODULE_DEVICE_TABLE(of, qcom_smem_of_match_table);
-+
-+static struct mtd_part_parser qcom_smem_parser = {
-+	.owner = THIS_MODULE,
-+	.parse_fn = parse_qcom_smem_partitions,
-+	.name = "qcom-smem",
-+	.of_match_table = qcom_smem_of_match_table,
-+};
-+
-+static int __init qcom_smem_parser_init(void)
-+{
-+	register_mtd_parser(&qcom_smem_parser);
-+	return 0;
-+}
-+
-+static void __exit qcom_smem_parser_exit(void)
-+{
-+	deregister_mtd_parser(&qcom_smem_parser);
-+}
-+
-+module_init(qcom_smem_parser_init);
-+module_exit(qcom_smem_parser_exit);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Mathieu Olivari <[email protected]>");
-+MODULE_DESCRIPTION("Parsing code for SMEM based partition tables");

target/linux/ipq806x/patches-5.4/0061-mtd-rootfs-conflicts-with-OpenWrt-auto-mounting.patch

@@ -1,23 +0,0 @@
-From 5001f2e1a325b68dbf225bd17f69a4d3d975cca5 Mon Sep 17 00:00:00 2001
-From: John Crispin <[email protected]>
-Date: Thu, 9 Mar 2017 09:31:44 +0100
-Subject: [PATCH 61/69] mtd: "rootfs" conflicts with OpenWrt auto mounting
-
-Signed-off-by: John Crispin <[email protected]>
----
- drivers/mtd/parsers/qcom_smem_part.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
---- a/drivers/mtd/parsers/qcom_smem_part.c
-+++ b/drivers/mtd/parsers/qcom_smem_part.c
-@@ -189,6 +189,10 @@ static int parse_qcom_smem_partitions(st
- 		m_part->size = le32_to_cpu(s_part->size) * (*smem_blksz);
- 		m_part->offset = le32_to_cpu(s_part->start) * (*smem_blksz);
- 
-+		/* "rootfs" conflicts with OpenWrt auto mounting */
-+		if (mtd_type_is_nand(master) && !strcmp(m_part->name, "rootfs"))
-+			m_part->name = "ubi";
-+
- 		/*
- 		 * The last SMEM partition may have its size marked as
- 		 * something like 0xffffffff, which means "until the end of the

target/linux/ipq806x/patches-5.4/0002-dmaengine-Add-ADM-driver.patch → target/linux/ipq806x/patches-5.4/100-v5.11-dmaengine-qcom-add_ADM_driver.patch

@@ -1,86 +1,95 @@
-From 563fa24db4e529c5a3311928d73a8a90531ee527 Mon Sep 17 00:00:00 2001
-From: Thomas Pedersen <[email protected]>
-Date: Mon, 16 May 2016 17:58:51 -0700
-Subject: [PATCH 02/69] dmaengine: Add ADM driver
-
-Original patch by Andy Gross.
+From 5c9f8c2dbdbe53818bcde6aa6695e1331e5f841f Mon Sep 17 00:00:00 2001
+From: Jonathan McDowell <[email protected]>
+Date: Sat, 14 Nov 2020 14:02:33 +0000
+Subject: dmaengine: qcom: Add ADM driver
 
 Add the DMA engine driver for the QCOM Application Data Mover (ADM) DMA
 controller found in the MSM8x60 and IPQ/APQ8064 platforms.
 
 The ADM supports both memory to memory transactions and memory
-to/from peripheral device transactions.  The controller also provides flow
-control capabilities for transactions to/from peripheral devices.
+to/from peripheral device transactions.  The controller also provides
+flow control capabilities for transactions to/from peripheral devices.
+
+The initial release of this driver supports slave transfers to/from
+peripherals and also incorporates CRCI (client rate control interface)
+flow control.
 
-The initial release of this driver supports slave transfers to/from peripherals
-and also incorporates CRCI (client rate control interface) flow control.
+The hardware only supports a 32 bit physical address, so specifying
+!PHYS_ADDR_T_64BIT gives maximum COMPILE_TEST coverage without having to
+spend effort on kludging things in the code that will never actually be
+needed on real hardware.
 
 Signed-off-by: Andy Gross <[email protected]>
 Signed-off-by: Thomas Pedersen <[email protected]>
+Signed-off-by: Jonathan McDowell <[email protected]>
+Link: https://lore.kernel.org/r/[email protected]
+Signed-off-by: Vinod Koul <[email protected]>
 ---
- drivers/dma/qcom/Kconfig    |  10 +
+ drivers/dma/qcom/Kconfig    |  11 +
  drivers/dma/qcom/Makefile   |   1 +
- drivers/dma/qcom/qcom_adm.c | 900 ++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 911 insertions(+)
+ drivers/dma/qcom/qcom_adm.c | 903 ++++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 915 insertions(+)
  create mode 100644 drivers/dma/qcom/qcom_adm.c
 
+diff --git a/drivers/dma/qcom/Kconfig b/drivers/dma/qcom/Kconfig
+index 3bcb689162c67..0389d60d2604a 100644
 --- a/drivers/dma/qcom/Kconfig
 +++ b/drivers/dma/qcom/Kconfig
-@@ -28,3 +28,13 @@ config QCOM_HIDMA
- 	  (user to kernel, kernel to kernel, etc.).  It only supports
- 	  memcpy interface. The core is not intended for general
- 	  purpose slave DMA.
-+
+@@ -1,4 +1,15 @@
+ # SPDX-License-Identifier: GPL-2.0-only
 +config QCOM_ADM
 +	tristate "Qualcomm ADM support"
-+	depends on ARCH_QCOM || (COMPILE_TEST && OF && ARM)
++	depends on (ARCH_QCOM || COMPILE_TEST) && !PHYS_ADDR_T_64BIT
 +	select DMA_ENGINE
 +	select DMA_VIRTUAL_CHANNELS
-+	---help---
-+	  Enable support for the Qualcomm ADM DMA controller.  This controller
-+	  provides DMA capabilities for both general purpose and on-chip
-+	  peripheral devices.
++	help
++	  Enable support for the Qualcomm Application Data Mover (ADM) DMA
++	  controller, as present on MSM8x60, APQ8064, and IPQ8064 devices.
++	  This controller provides DMA capabilities for both general purpose
++	  and on-chip peripheral devices.
++
+ config QCOM_BAM_DMA
+ 	tristate "QCOM BAM DMA support"
+ 	depends on ARCH_QCOM || (COMPILE_TEST && OF && ARM)
+diff --git a/drivers/dma/qcom/Makefile b/drivers/dma/qcom/Makefile
+index 1ae92da88b0c9..346e643fbb6db 100644
 --- a/drivers/dma/qcom/Makefile
 +++ b/drivers/dma/qcom/Makefile
-@@ -4,3 +4,4 @@ obj-$(CONFIG_QCOM_HIDMA_MGMT) += hdma_mg
- hdma_mgmt-objs	 := hidma_mgmt.o hidma_mgmt_sys.o
- obj-$(CONFIG_QCOM_HIDMA) +=  hdma.o
- hdma-objs        := hidma_ll.o hidma.o hidma_dbg.o
+@@ -1,4 +1,5 @@
+ # SPDX-License-Identifier: GPL-2.0
 +obj-$(CONFIG_QCOM_ADM) += qcom_adm.o
+ obj-$(CONFIG_QCOM_BAM_DMA) += bam_dma.o
+ obj-$(CONFIG_QCOM_HIDMA_MGMT) += hdma_mgmt.o
+ hdma_mgmt-objs	 := hidma_mgmt.o hidma_mgmt_sys.o
+diff --git a/drivers/dma/qcom/qcom_adm.c b/drivers/dma/qcom/qcom_adm.c
+new file mode 100644
+index 0000000000000..9b6f8e050ecce
 --- /dev/null
 +++ b/drivers/dma/qcom/qcom_adm.c
-@@ -0,0 +1,914 @@
+@@ -0,0 +1,903 @@
++// SPDX-License-Identifier: GPL-2.0-only
 +/*
 + * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 and
-+ * only version 2 as published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
 + */
 +
-+#include <linux/kernel.h>
-+#include <linux/io.h>
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/device.h>
++#include <linux/dmaengine.h>
++#include <linux/dma-mapping.h>
 +#include <linux/init.h>
-+#include <linux/slab.h>
-+#include <linux/module.h>
 +#include <linux/interrupt.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/scatterlist.h>
-+#include <linux/device.h>
-+#include <linux/platform_device.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
 +#include <linux/of.h>
 +#include <linux/of_address.h>
 +#include <linux/of_irq.h>
 +#include <linux/of_dma.h>
++#include <linux/platform_device.h>
 +#include <linux/reset.h>
-+#include <linux/clk.h>
-+#include <linux/dmaengine.h>
++#include <linux/scatterlist.h>
++#include <linux/slab.h>
 +
 +#include "../dmaengine.h"
 +#include "../virt-dma.h"
@@ -90,10 +99,10 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +#define ADM_CI_MULTI			0x4
 +#define ADM_CRCI_MULTI			0x4
 +#define ADM_EE_MULTI			0x800
-+#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * chan)
-+#define ADM_EE_OFFS(ee)			(ADM_EE_MULTI * ee)
++#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * (chan))
++#define ADM_EE_OFFS(ee)			(ADM_EE_MULTI * (ee))
 +#define ADM_CHAN_EE_OFFS(chan, ee)	(ADM_CHAN_OFFS(chan) + ADM_EE_OFFS(ee))
-+#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * chan)
++#define ADM_CHAN_OFFS(chan)		(ADM_CHAN_MULTI * (chan))
 +#define ADM_CI_OFFS(ci)			(ADM_CHAN_OFF(ci))
 +#define ADM_CH_CMD_PTR(chan, ee)	(ADM_CHAN_EE_OFFS(chan, ee))
 +#define ADM_CH_RSLT(chan, ee)		(0x40 + ADM_CHAN_EE_OFFS(chan, ee))
@@ -102,62 +111,62 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +#define ADM_CH_CONF(chan)		(0x240 + ADM_CHAN_OFFS(chan))
 +#define ADM_CH_RSLT_CONF(chan, ee)	(0x300 + ADM_CHAN_EE_OFFS(chan, ee))
 +#define ADM_SEC_DOMAIN_IRQ_STATUS(ee)	(0x380 + ADM_EE_OFFS(ee))
-+#define ADM_CI_CONF(ci)			(0x390 + ci * ADM_CI_MULTI)
++#define ADM_CI_CONF(ci)			(0x390 + (ci) * ADM_CI_MULTI)
 +#define ADM_GP_CTL			0x3d8
-+#define ADM_CRCI_CTL(crci, ee)		(0x400 + crci * ADM_CRCI_MULTI + \
++#define ADM_CRCI_CTL(crci, ee)		(0x400 + (crci) * ADM_CRCI_MULTI + \
 +						ADM_EE_OFFS(ee))
 +
 +/* channel status */
-+#define ADM_CH_STATUS_VALID	BIT(1)
++#define ADM_CH_STATUS_VALID		BIT(1)
 +
 +/* channel result */
-+#define ADM_CH_RSLT_VALID	BIT(31)
-+#define ADM_CH_RSLT_ERR		BIT(3)
-+#define ADM_CH_RSLT_FLUSH	BIT(2)
-+#define ADM_CH_RSLT_TPD		BIT(1)
++#define ADM_CH_RSLT_VALID		BIT(31)
++#define ADM_CH_RSLT_ERR			BIT(3)
++#define ADM_CH_RSLT_FLUSH		BIT(2)
++#define ADM_CH_RSLT_TPD			BIT(1)
 +
 +/* channel conf */
 +#define ADM_CH_CONF_SHADOW_EN		BIT(12)
 +#define ADM_CH_CONF_MPU_DISABLE		BIT(11)
 +#define ADM_CH_CONF_PERM_MPU_CONF	BIT(9)
 +#define ADM_CH_CONF_FORCE_RSLT_EN	BIT(7)
-+#define ADM_CH_CONF_SEC_DOMAIN(ee)	(((ee & 0x3) << 4) | ((ee & 0x4) << 11))
++#define ADM_CH_CONF_SEC_DOMAIN(ee)	((((ee) & 0x3) << 4) | (((ee) & 0x4) << 11))
 +
 +/* channel result conf */
 +#define ADM_CH_RSLT_CONF_FLUSH_EN	BIT(1)
 +#define ADM_CH_RSLT_CONF_IRQ_EN		BIT(0)
 +
 +/* CRCI CTL */
-+#define ADM_CRCI_CTL_MUX_SEL	BIT(18)
-+#define ADM_CRCI_CTL_RST	BIT(17)
++#define ADM_CRCI_CTL_MUX_SEL		BIT(18)
++#define ADM_CRCI_CTL_RST		BIT(17)
 +
 +/* CI configuration */
-+#define ADM_CI_RANGE_END(x)	(x << 24)
-+#define ADM_CI_RANGE_START(x)	(x << 16)
-+#define ADM_CI_BURST_4_WORDS	BIT(2)
-+#define ADM_CI_BURST_8_WORDS	BIT(3)
++#define ADM_CI_RANGE_END(x)		((x) << 24)
++#define ADM_CI_RANGE_START(x)		((x) << 16)
++#define ADM_CI_BURST_4_WORDS		BIT(2)
++#define ADM_CI_BURST_8_WORDS		BIT(3)
 +
 +/* GP CTL */
-+#define ADM_GP_CTL_LP_EN	BIT(12)
-+#define ADM_GP_CTL_LP_CNT(x)	(x << 8)
++#define ADM_GP_CTL_LP_EN		BIT(12)
++#define ADM_GP_CTL_LP_CNT(x)		((x) << 8)
 +
 +/* Command pointer list entry */
-+#define ADM_CPLE_LP		BIT(31)
-+#define ADM_CPLE_CMD_PTR_LIST	BIT(29)
++#define ADM_CPLE_LP			BIT(31)
++#define ADM_CPLE_CMD_PTR_LIST		BIT(29)
 +
 +/* Command list entry */
-+#define ADM_CMD_LC		BIT(31)
-+#define ADM_CMD_DST_CRCI(n)	(((n) & 0xf) << 7)
-+#define ADM_CMD_SRC_CRCI(n)	(((n) & 0xf) << 3)
++#define ADM_CMD_LC			BIT(31)
++#define ADM_CMD_DST_CRCI(n)		(((n) & 0xf) << 7)
++#define ADM_CMD_SRC_CRCI(n)		(((n) & 0xf) << 3)
 +
-+#define ADM_CMD_TYPE_SINGLE	0x0
-+#define ADM_CMD_TYPE_BOX	0x3
++#define ADM_CMD_TYPE_SINGLE		0x0
++#define ADM_CMD_TYPE_BOX		0x3
 +
-+#define ADM_CRCI_MUX_SEL	BIT(4)
-+#define ADM_DESC_ALIGN		8
-+#define ADM_MAX_XFER		(SZ_64K-1)
-+#define ADM_MAX_ROWS		(SZ_64K-1)
-+#define ADM_MAX_CHANNELS	16
++#define ADM_CRCI_MUX_SEL		BIT(4)
++#define ADM_DESC_ALIGN			8
++#define ADM_MAX_XFER			(SZ_64K - 1)
++#define ADM_MAX_ROWS			(SZ_64K - 1)
++#define ADM_MAX_CHANNELS		16
 +
 +struct adm_desc_hw_box {
 +	u32 cmd;
@@ -255,7 +264,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	case 32:
 +	case 64:
 +	case 128:
-+		ret = ffs(burst>>4) - 1;
++		ret = ffs(burst >> 4) - 1;
 +		break;
 +	case 192:
 +		ret = 4;
@@ -281,9 +290,10 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * @burst: Burst size of transaction
 + * @direction: DMA transfer direction
 + */
-+static void *adm_process_fc_descriptors(struct adm_chan *achan,
-+	void *desc, struct scatterlist *sg, u32 crci, u32 burst,
-+	enum dma_transfer_direction direction)
++static void *adm_process_fc_descriptors(struct adm_chan *achan, void *desc,
++					struct scatterlist *sg, u32 crci,
++					u32 burst,
++					enum dma_transfer_direction direction)
 +{
 +	struct adm_desc_hw_box *box_desc = NULL;
 +	struct adm_desc_hw_single *single_desc;
@@ -349,9 +359,9 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * @sg: Scatterlist entry
 + * @direction: DMA transfer direction
 + */
-+static void *adm_process_non_fc_descriptors(struct adm_chan *achan,
-+	void *desc, struct scatterlist *sg,
-+	enum dma_transfer_direction direction)
++static void *adm_process_non_fc_descriptors(struct adm_chan *achan, void *desc,
++					    struct scatterlist *sg,
++					    enum dma_transfer_direction direction)
 +{
 +	struct adm_desc_hw_single *single_desc;
 +	u32 remainder = sg_dma_len(sg);
@@ -398,9 +408,11 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * @context: transfer context (unused)
 + */
 +static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
-+	struct scatterlist *sgl, unsigned int sg_len,
-+	enum dma_transfer_direction direction, unsigned long flags,
-+	void *context)
++							 struct scatterlist *sgl,
++							 unsigned int sg_len,
++							 enum dma_transfer_direction direction,
++							 unsigned long flags,
++							 void *context)
 +{
 +	struct adm_chan *achan = to_adm_chan(chan);
 +	struct adm_device *adev = achan->adev;
@@ -427,7 +439,6 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* if using flow control, validate burst and crci values */
 +	if (achan->slave.device_fc) {
-+
 +		blk_size = adm_get_blksize(burst);
 +		if (blk_size < 0) {
 +			dev_err(adev->dev, "invalid burst value: %d\n",
@@ -455,7 +466,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +		}
 +	}
 +
-+	async_desc = kzalloc(sizeof(*async_desc), GFP_ATOMIC);
++	async_desc = kzalloc(sizeof(*async_desc), GFP_NOWAIT);
 +	if (!async_desc)
 +		return ERR_PTR(-ENOMEM);
 +
@@ -468,7 +479,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +				box_count * sizeof(struct adm_desc_hw_box) +
 +				sizeof(*cple) + 2 * ADM_DESC_ALIGN;
 +
-+	async_desc->cpl = kzalloc(async_desc->dma_len, GFP_ATOMIC);
++	async_desc->cpl = kzalloc(async_desc->dma_len, GFP_NOWAIT);
 +	if (!async_desc->cpl)
 +		goto free;
 +
@@ -483,10 +494,10 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +		if (achan->slave.device_fc)
 +			desc = adm_process_fc_descriptors(achan, desc, sg, crci,
-+							burst, direction);
++							  burst, direction);
 +		else
 +			desc = adm_process_non_fc_descriptors(achan, desc, sg,
-+							   direction);
++							      direction);
 +	}
 +
 +	async_desc->dma_addr = dma_map_single(adev->dev, async_desc->cpl,
@@ -532,7 +543,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* send flush command to terminate current transaction */
 +	writel_relaxed(0x0,
-+		adev->regs + ADM_CH_FLUSH_STATE0(achan->id, adev->ee));
++		       adev->regs + ADM_CH_FLUSH_STATE0(achan->id, adev->ee));
 +
 +	spin_unlock_irqrestore(&achan->vc.lock, flags);
 +
@@ -586,7 +597,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +		       adev->regs + ADM_CH_CONF(achan->id));
 +
 +		writel(ADM_CH_RSLT_CONF_IRQ_EN | ADM_CH_RSLT_CONF_FLUSH_EN,
-+			adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
++		       adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
 +
 +		achan->initialized = 1;
 +	}
@@ -594,7 +605,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	/* set the crci block size if this transaction requires CRCI */
 +	if (async_desc->crci) {
 +		writel(async_desc->mux | async_desc->blk_size,
-+			adev->regs + ADM_CRCI_CTL(async_desc->crci, adev->ee));
++		       adev->regs + ADM_CRCI_CTL(async_desc->crci, adev->ee));
 +	}
 +
 +	/* make sure IRQ enable doesn't get reordered */
@@ -602,7 +613,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* write next command list out to the CMD FIFO */
 +	writel(ALIGN(async_desc->dma_addr, ADM_DESC_ALIGN) >> 3,
-+		adev->regs + ADM_CH_CMD_PTR(achan->id, adev->ee));
++	       adev->regs + ADM_CH_CMD_PTR(achan->id, adev->ee));
 +}
 +
 +/**
@@ -628,7 +639,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +		if (srcs & BIT(i)) {
 +			status = readl_relaxed(adev->regs +
-+				ADM_CH_STATUS_SD(i, adev->ee));
++					       ADM_CH_STATUS_SD(i, adev->ee));
 +
 +			/* if no result present, skip */
 +			if (!(status & ADM_CH_STATUS_VALID))
@@ -673,7 +684,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 + * Return status of dma transaction
 + */
 +static enum dma_status adm_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
-+	struct dma_tx_state *txstate)
++				     struct dma_tx_state *txstate)
 +{
 +	struct adm_chan *achan = to_adm_chan(chan);
 +	struct virt_dma_desc *vd;
@@ -697,7 +708,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	 * residue is either the full length if it is in the issued list, or 0
 +	 * if it is in progress.  We have no reliable way of determining
 +	 * anything inbetween
-+	*/
++	 */
 +	dma_set_residue(txstate, residue);
 +
 +	if (achan->error)
@@ -741,7 +752,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +}
 +
 +static void adm_channel_init(struct adm_device *adev, struct adm_chan *achan,
-+	u32 index)
++			     u32 index)
 +{
 +	achan->id = index;
 +	achan->adev = adev;
@@ -753,7 +764,6 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +static int adm_dma_probe(struct platform_device *pdev)
 +{
 +	struct adm_device *adev;
-+	struct resource *iores;
 +	int ret;
 +	u32 i;
 +
@@ -763,8 +773,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	adev->dev = &pdev->dev;
 +
-+	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	adev->regs = devm_ioremap_resource(&pdev->dev, iores);
++	adev->regs = devm_platform_ioremap_resource(pdev, 0);
 +	if (IS_ERR(adev->regs))
 +		return PTR_ERR(adev->regs);
 +
@@ -782,50 +791,44 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	if (IS_ERR(adev->core_clk))
 +		return PTR_ERR(adev->core_clk);
 +
-+	ret = clk_prepare_enable(adev->core_clk);
-+	if (ret) {
-+		dev_err(adev->dev, "failed to prepare/enable core clock\n");
-+		return ret;
-+	}
-+
 +	adev->iface_clk = devm_clk_get(adev->dev, "iface");
-+	if (IS_ERR(adev->iface_clk)) {
-+		ret = PTR_ERR(adev->iface_clk);
-+		goto err_disable_core_clk;
-+	}
-+
-+	ret = clk_prepare_enable(adev->iface_clk);
-+	if (ret) {
-+		dev_err(adev->dev, "failed to prepare/enable iface clock\n");
-+		goto err_disable_core_clk;
-+	}
++	if (IS_ERR(adev->iface_clk))
++		return PTR_ERR(adev->iface_clk);
 +
-+	adev->clk_reset = devm_reset_control_get(&pdev->dev, "clk");
++	adev->clk_reset = devm_reset_control_get_exclusive(&pdev->dev, "clk");
 +	if (IS_ERR(adev->clk_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 reset\n");
-+		ret = PTR_ERR(adev->clk_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->clk_reset);
 +	}
 +
-+	adev->c0_reset = devm_reset_control_get(&pdev->dev, "c0");
++	adev->c0_reset = devm_reset_control_get_exclusive(&pdev->dev, "c0");
 +	if (IS_ERR(adev->c0_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 C0 reset\n");
-+		ret = PTR_ERR(adev->c0_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->c0_reset);
 +	}
 +
-+	adev->c1_reset = devm_reset_control_get(&pdev->dev, "c1");
++	adev->c1_reset = devm_reset_control_get_exclusive(&pdev->dev, "c1");
 +	if (IS_ERR(adev->c1_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 C1 reset\n");
-+		ret = PTR_ERR(adev->c1_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->c1_reset);
 +	}
 +
-+	adev->c2_reset = devm_reset_control_get(&pdev->dev, "c2");
++	adev->c2_reset = devm_reset_control_get_exclusive(&pdev->dev, "c2");
 +	if (IS_ERR(adev->c2_reset)) {
 +		dev_err(adev->dev, "failed to get ADM0 C2 reset\n");
-+		ret = PTR_ERR(adev->c2_reset);
-+		goto err_disable_clks;
++		return PTR_ERR(adev->c2_reset);
++	}
++
++	ret = clk_prepare_enable(adev->core_clk);
++	if (ret) {
++		dev_err(adev->dev, "failed to prepare/enable core clock\n");
++		return ret;
++	}
++
++	ret = clk_prepare_enable(adev->iface_clk);
++	if (ret) {
++		dev_err(adev->dev, "failed to prepare/enable iface clock\n");
++		goto err_disable_core_clk;
 +	}
 +
 +	reset_control_assert(adev->clk_reset);
@@ -833,13 +836,15 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +	reset_control_assert(adev->c1_reset);
 +	reset_control_assert(adev->c2_reset);
 +
++	udelay(2);
++
 +	reset_control_deassert(adev->clk_reset);
 +	reset_control_deassert(adev->c0_reset);
 +	reset_control_deassert(adev->c1_reset);
 +	reset_control_deassert(adev->c2_reset);
 +
 +	adev->channels = devm_kcalloc(adev->dev, ADM_MAX_CHANNELS,
-+				sizeof(*adev->channels), GFP_KERNEL);
++				      sizeof(*adev->channels), GFP_KERNEL);
 +
 +	if (!adev->channels) {
 +		ret = -ENOMEM;
@@ -859,16 +864,16 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +
 +	/* configure client interfaces */
 +	writel(ADM_CI_RANGE_START(0x40) | ADM_CI_RANGE_END(0xb0) |
-+		ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(0));
++	       ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(0));
 +	writel(ADM_CI_RANGE_START(0x2a) | ADM_CI_RANGE_END(0x2c) |
-+		ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(1));
++	       ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(1));
 +	writel(ADM_CI_RANGE_START(0x12) | ADM_CI_RANGE_END(0x28) |
-+		ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(2));
++	       ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(2));
 +	writel(ADM_GP_CTL_LP_EN | ADM_GP_CTL_LP_CNT(0xf),
-+		adev->regs + ADM_GP_CTL);
++	       adev->regs + ADM_GP_CTL);
 +
 +	ret = devm_request_irq(adev->dev, adev->irq, adm_dma_irq,
-+			0, "adm_dma", adev);
++			       0, "adm_dma", adev);
 +	if (ret)
 +		goto err_disable_clks;
 +
@@ -933,6 +938,7 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +		/* mask IRQs for this channel/EE pair */
 +		writel(0, adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
 +
++		tasklet_kill(&adev->channels[i].vc.task);
 +		adm_terminate_all(&adev->channels[i].vc.chan);
 +	}
 +
@@ -964,3 +970,6 @@ Signed-off-by: Thomas Pedersen <[email protected]>
 +MODULE_AUTHOR("Andy Gross <[email protected]>");
 +MODULE_DESCRIPTION("QCOM ADM DMA engine driver");
 +MODULE_LICENSE("GPL v2");
+-- 
+cgit 1.2.3-1.el7
+

target/linux/ipq806x/patches-5.4/101-5.12-mtd-parsers-Add-Qcom-SMEM-parser.patch

@@ -0,0 +1,227 @@
+From 803eb124e1a64e42888542c3444bfe6dac412c7f Mon Sep 17 00:00:00 2001
+From: Manivannan Sadhasivam <[email protected]>
+Date: Mon, 4 Jan 2021 09:41:35 +0530
+Subject: mtd: parsers: Add Qcom SMEM parser
+
+NAND based Qualcomm platforms have the partition table populated in the
+Shared Memory (SMEM). Hence, add a parser for parsing the partitions
+from it.
+
+Signed-off-by: Manivannan Sadhasivam <[email protected]>
+Signed-off-by: Miquel Raynal <[email protected]>
+Link: https://lore.kernel.org/linux-mtd/[email protected]
+---
+ drivers/mtd/parsers/Kconfig        |   8 ++
+ drivers/mtd/parsers/Makefile       |   1 +
+ drivers/mtd/parsers/qcomsmempart.c | 170 +++++++++++++++++++++++++++++++++++++
+ 3 files changed, 179 insertions(+)
+ create mode 100644 drivers/mtd/parsers/qcomsmempart.c
+
+diff --git a/drivers/mtd/parsers/Kconfig b/drivers/mtd/parsers/Kconfig
+index e72354322f628..d90c302290522 100644
+--- a/drivers/mtd/parsers/Kconfig
++++ b/drivers/mtd/parsers/Kconfig
+@@ -160,6 +160,14 @@ config MTD_REDBOOT_PARTS_READONLY
+ 	  'FIS directory' images, enable this option.
+ 
+ endif # MTD_REDBOOT_PARTS
++
++config MTD_QCOMSMEM_PARTS
++	tristate "Qualcomm SMEM NAND flash partition parser"
++	depends on MTD_NAND_QCOM || COMPILE_TEST
++	depends on QCOM_SMEM
++	help
++	  This provides support for parsing partitions from Shared Memory (SMEM)
++	  for NAND flash on Qualcomm platforms.
+ 
+ config MTD_ROUTERBOOT_PARTS
+ 	tristate "RouterBoot flash partition parser"
+diff --git a/drivers/mtd/parsers/Makefile b/drivers/mtd/parsers/Makefile
+index b0c5f62f9e858..50eb0b0a22105 100644
+--- a/drivers/mtd/parsers/Makefile
++++ b/drivers/mtd/parsers/Makefile
+@@ -9,4 +9,5 @@ obj-$(CONFIG_MTD_AFS_PARTS)		+= afs.o
+ obj-$(CONFIG_MTD_PARSER_TRX)		+= parser_trx.o
+ obj-$(CONFIG_MTD_SHARPSL_PARTS)		+= sharpslpart.o
+ obj-$(CONFIG_MTD_REDBOOT_PARTS)		+= redboot.o
++obj-$(CONFIG_MTD_QCOMSMEM_PARTS)	+= qcomsmempart.o
+ obj-$(CONFIG_MTD_ROUTERBOOT_PARTS)		+= routerbootpart.o
+diff --git a/drivers/mtd/parsers/qcomsmempart.c b/drivers/mtd/parsers/qcomsmempart.c
+new file mode 100644
+index 0000000000000..808cb33d71f8e
+--- /dev/null
++++ b/drivers/mtd/parsers/qcomsmempart.c
+@@ -0,0 +1,170 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * Qualcomm SMEM NAND flash partition parser
++ *
++ * Copyright (C) 2020, Linaro Ltd.
++ */
++
++#include <linux/ctype.h>
++#include <linux/module.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
++#include <linux/slab.h>
++#include <linux/soc/qcom/smem.h>
++
++#define SMEM_AARM_PARTITION_TABLE	9
++#define SMEM_APPS			0
++
++#define SMEM_FLASH_PART_MAGIC1		0x55ee73aa
++#define SMEM_FLASH_PART_MAGIC2		0xe35ebddb
++#define SMEM_FLASH_PTABLE_V3		3
++#define SMEM_FLASH_PTABLE_V4		4
++#define SMEM_FLASH_PTABLE_MAX_PARTS_V3	16
++#define SMEM_FLASH_PTABLE_MAX_PARTS_V4	48
++#define SMEM_FLASH_PTABLE_HDR_LEN	(4 * sizeof(u32))
++#define SMEM_FLASH_PTABLE_NAME_SIZE	16
++
++/**
++ * struct smem_flash_pentry - SMEM Flash partition entry
++ * @name: Name of the partition
++ * @offset: Offset in blocks
++ * @length: Length of the partition in blocks
++ * @attr: Flags for this partition
++ */
++struct smem_flash_pentry {
++	char name[SMEM_FLASH_PTABLE_NAME_SIZE];
++	__le32 offset;
++	__le32 length;
++	u8 attr;
++} __packed __aligned(4);
++
++/**
++ * struct smem_flash_ptable - SMEM Flash partition table
++ * @magic1: Partition table Magic 1
++ * @magic2: Partition table Magic 2
++ * @version: Partition table version
++ * @numparts: Number of partitions in this ptable
++ * @pentry: Flash partition entries belonging to this ptable
++ */
++struct smem_flash_ptable {
++	__le32 magic1;
++	__le32 magic2;
++	__le32 version;
++	__le32 numparts;
++	struct smem_flash_pentry pentry[SMEM_FLASH_PTABLE_MAX_PARTS_V4];
++} __packed __aligned(4);
++
++static int parse_qcomsmem_part(struct mtd_info *mtd,
++			       const struct mtd_partition **pparts,
++			       struct mtd_part_parser_data *data)
++{
++	struct smem_flash_pentry *pentry;
++	struct smem_flash_ptable *ptable;
++	size_t len = SMEM_FLASH_PTABLE_HDR_LEN;
++	struct mtd_partition *parts;
++	int ret, i, numparts;
++	char *name, *c;
++
++	pr_debug("Parsing partition table info from SMEM\n");
++	ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len);
++	if (IS_ERR(ptable)) {
++		pr_err("Error reading partition table header\n");
++		return PTR_ERR(ptable);
++	}
++
++	/* Verify ptable magic */
++	if (le32_to_cpu(ptable->magic1) != SMEM_FLASH_PART_MAGIC1 ||
++	    le32_to_cpu(ptable->magic2) != SMEM_FLASH_PART_MAGIC2) {
++		pr_err("Partition table magic verification failed\n");
++		return -EINVAL;
++	}
++
++	/* Ensure that # of partitions is less than the max we have allocated */
++	numparts = le32_to_cpu(ptable->numparts);
++	if (numparts > SMEM_FLASH_PTABLE_MAX_PARTS_V4) {
++		pr_err("Partition numbers exceed the max limit\n");
++		return -EINVAL;
++	}
++
++	/* Find out length of partition data based on table version */
++	if (le32_to_cpu(ptable->version) <= SMEM_FLASH_PTABLE_V3) {
++		len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V3 *
++			sizeof(struct smem_flash_pentry);
++	} else if (le32_to_cpu(ptable->version) == SMEM_FLASH_PTABLE_V4) {
++		len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V4 *
++			sizeof(struct smem_flash_pentry);
++	} else {
++		pr_err("Unknown ptable version (%d)", le32_to_cpu(ptable->version));
++		return -EINVAL;
++	}
++
++	/*
++	 * Now that the partition table header has been parsed, verified
++	 * and the length of the partition table calculated, read the
++	 * complete partition table
++	 */
++	ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len);
++	if (IS_ERR_OR_NULL(ptable)) {
++		pr_err("Error reading partition table\n");
++		return PTR_ERR(ptable);
++	}
++
++	parts = kcalloc(numparts, sizeof(*parts), GFP_KERNEL);
++	if (!parts)
++		return -ENOMEM;
++
++	for (i = 0; i < numparts; i++) {
++		pentry = &ptable->pentry[i];
++		if (pentry->name[0] == '\0')
++			continue;
++
++		name = kstrdup(pentry->name, GFP_KERNEL);
++		if (!name) {
++			ret = -ENOMEM;
++			goto out_free_parts;
++		}
++
++		/* Convert name to lower case */
++		for (c = name; *c != '\0'; c++)
++			*c = tolower(*c);
++
++		parts[i].name = name;
++		parts[i].offset = le32_to_cpu(pentry->offset) * mtd->erasesize;
++		parts[i].mask_flags = pentry->attr;
++		parts[i].size = le32_to_cpu(pentry->length) * mtd->erasesize;
++		pr_debug("%d: %s offs=0x%08x size=0x%08x attr:0x%08x\n",
++			 i, pentry->name, le32_to_cpu(pentry->offset),
++			 le32_to_cpu(pentry->length), pentry->attr);
++	}
++
++	pr_debug("SMEM partition table found: ver: %d len: %d\n",
++		 le32_to_cpu(ptable->version), numparts);
++	*pparts = parts;
++
++	return numparts;
++
++out_free_parts:
++	while (--i >= 0)
++		kfree(parts[i].name);
++	kfree(parts);
++	*pparts = NULL;
++
++	return ret;
++}
++
++static const struct of_device_id qcomsmem_of_match_table[] = {
++	{ .compatible = "qcom,smem-part" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, qcomsmem_of_match_table);
++
++static struct mtd_part_parser mtd_parser_qcomsmem = {
++	.parse_fn = parse_qcomsmem_part,
++	.name = "qcomsmem",
++	.of_match_table = qcomsmem_of_match_table,
++};
++module_mtd_part_parser(mtd_parser_qcomsmem);
++
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Manivannan Sadhasivam <[email protected]>");
++MODULE_DESCRIPTION("Qualcomm SMEM NAND flash partition parser");
+-- 
+cgit 1.2.3-1.el7
+

target/linux/ipq806x/patches-5.4/102-mtd-rootfs-conflicts-with-OpenWrt-auto-mounting.patch

@@ -0,0 +1,24 @@
+From 5001f2e1a325b68dbf225bd17f69a4d3d975cca5 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Thu, 9 Mar 2017 09:31:44 +0100
+Subject: [PATCH 61/69] mtd: "rootfs" conflicts with OpenWrt auto mounting
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/mtd/parsers/qcomsmempart.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/mtd/parsers/qcomsmempart.c
++++ b/drivers/mtd/parsers/qcomsmempart.c
+@@ -132,6 +132,11 @@ static int parse_qcomsmem_part(struct mt
+ 		parts[i].offset = le32_to_cpu(pentry->offset) * mtd->erasesize;
+ 		parts[i].mask_flags = pentry->attr;
+ 		parts[i].size = le32_to_cpu(pentry->length) * mtd->erasesize;
++
++		/* "rootfs" conflicts with OpenWrt auto mounting */
++		if (mtd_type_is_nand(mtd) && !strcmp(name, "rootfs"))
++			parts[i].name = "ubi";
++
+ 		pr_debug("%d: %s offs=0x%08x size=0x%08x attr:0x%08x\n",
+ 			 i, pentry->name, le32_to_cpu(pentry->offset),
+ 			 le32_to_cpu(pentry->length), pentry->attr);