--- /dev/null
+From c37953457a7ebeb0d97ae8574b3d41274fcd9119 Mon Sep 17 00:00:00 2001
+From: Yangbo Lu <yangbo.lu@nxp.com>
+Date: Wed, 1 Nov 2017 16:22:33 +0800
+Subject: [PATCH] core-linux: support layerscape
+
+This is a integrated patch for layerscape core-linux support.
+
+Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
+Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
+Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
+Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
+Signed-off-by: Zhang Ying-22455 <ying.zhang22455@nxp.com>
+Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
+Signed-off-by: Jarod Wilson <jarod@redhat.com>
+Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
+Signed-off-by: stephen hemminger <stephen@networkplumber.org>
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
+---
+ drivers/base/devres.c | 66 ++++++++++++++++++++++++++++
+ drivers/base/soc.c | 66 ++++++++++++++++++++++++++++
+ include/linux/device.h | 19 ++++++++
+ include/linux/fsl/svr.h | 97 +++++++++++++++++++++++++++++++++++++++++
+ include/linux/fsl_devices.h | 3 ++
+ include/linux/netdev_features.h | 2 +
+ include/linux/netdevice.h | 4 ++
+ include/linux/skbuff.h | 2 +
+ include/linux/sys_soc.h | 3 ++
+ include/uapi/linux/if_ether.h | 1 +
+ net/core/dev.c | 13 +++++-
+ net/core/skbuff.c | 29 +++++++++++-
+ net/sched/sch_generic.c | 7 +++
+ 13 files changed, 309 insertions(+), 3 deletions(-)
+ create mode 100644 include/linux/fsl/svr.h
+
+diff --git a/drivers/base/devres.c b/drivers/base/devres.c
+index 8fc654f0..71d57702 100644
+--- a/drivers/base/devres.c
++++ b/drivers/base/devres.c
+@@ -10,6 +10,7 @@
+ #include <linux/device.h>
+ #include <linux/module.h>
+ #include <linux/slab.h>
++#include <linux/percpu.h>
+
+ #include "base.h"
+
+@@ -985,3 +986,68 @@ void devm_free_pages(struct device *dev, unsigned long addr)
+ &devres));
+ }
+ EXPORT_SYMBOL_GPL(devm_free_pages);
++
++static void devm_percpu_release(struct device *dev, void *pdata)
++{
++ void __percpu *p;
++
++ p = *(void __percpu **)pdata;
++ free_percpu(p);
++}
++
++static int devm_percpu_match(struct device *dev, void *data, void *p)
++{
++ struct devres *devr = container_of(data, struct devres, data);
++
++ return *(void **)devr->data == p;
++}
++
++/**
++ * __devm_alloc_percpu - Resource-managed alloc_percpu
++ * @dev: Device to allocate per-cpu memory for
++ * @size: Size of per-cpu memory to allocate
++ * @align: Alignment of per-cpu memory to allocate
++ *
++ * Managed alloc_percpu. Per-cpu memory allocated with this function is
++ * automatically freed on driver detach.
++ *
++ * RETURNS:
++ * Pointer to allocated memory on success, NULL on failure.
++ */
++void __percpu *__devm_alloc_percpu(struct device *dev, size_t size,
++ size_t align)
++{
++ void *p;
++ void __percpu *pcpu;
++
++ pcpu = __alloc_percpu(size, align);
++ if (!pcpu)
++ return NULL;
++
++ p = devres_alloc(devm_percpu_release, sizeof(void *), GFP_KERNEL);
++ if (!p) {
++ free_percpu(pcpu);
++ return NULL;
++ }
++
++ *(void __percpu **)p = pcpu;
++
++ devres_add(dev, p);
++
++ return pcpu;
++}
++EXPORT_SYMBOL_GPL(__devm_alloc_percpu);
++
++/**
++ * devm_free_percpu - Resource-managed free_percpu
++ * @dev: Device this memory belongs to
++ * @pdata: Per-cpu memory to free
++ *
++ * Free memory allocated with devm_alloc_percpu().
++ */
++void devm_free_percpu(struct device *dev, void __percpu *pdata)
++{
++ WARN_ON(devres_destroy(dev, devm_percpu_release, devm_percpu_match,
++ (void *)pdata));
++}
++EXPORT_SYMBOL_GPL(devm_free_percpu);
+diff --git a/drivers/base/soc.c b/drivers/base/soc.c
+index b63f23e6..0c5cf872 100644
+--- a/drivers/base/soc.c
++++ b/drivers/base/soc.c
+@@ -13,6 +13,7 @@
+ #include <linux/spinlock.h>
+ #include <linux/sys_soc.h>
+ #include <linux/err.h>
++#include <linux/glob.h>
+
+ static DEFINE_IDA(soc_ida);
+
+@@ -159,3 +160,68 @@ static int __init soc_bus_register(void)
+ return bus_register(&soc_bus_type);
+ }
+ core_initcall(soc_bus_register);
++
++static int soc_device_match_one(struct device *dev, void *arg)
++{
++ struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
++ const struct soc_device_attribute *match = arg;
++
++ if (match->machine &&
++ !glob_match(match->machine, soc_dev->attr->machine))
++ return 0;
++
++ if (match->family &&
++ !glob_match(match->family, soc_dev->attr->family))
++ return 0;
++
++ if (match->revision &&
++ !glob_match(match->revision, soc_dev->attr->revision))
++ return 0;
++
++ if (match->soc_id &&
++ !glob_match(match->soc_id, soc_dev->attr->soc_id))
++ return 0;
++
++ return 1;
++}
++
++/*
++ * soc_device_match - identify the SoC in the machine
++ * @matches: zero-terminated array of possible matches
++ *
++ * returns the first matching entry of the argument array, or NULL
++ * if none of them match.
++ *
++ * This function is meant as a helper in place of of_match_node()
++ * in cases where either no device tree is available or the information
++ * in a device node is insufficient to identify a particular variant
++ * by its compatible strings or other properties. For new devices,
++ * the DT binding should always provide unique compatible strings
++ * that allow the use of of_match_node() instead.
++ *
++ * The calling function can use the .data entry of the
++ * soc_device_attribute to pass a structure or function pointer for
++ * each entry.
++ */
++const struct soc_device_attribute *soc_device_match(
++ const struct soc_device_attribute *matches)
++{
++ int ret = 0;
++
++ if (!matches)
++ return NULL;
++
++ while (!ret) {
++ if (!(matches->machine || matches->family ||
++ matches->revision || matches->soc_id))
++ break;
++ ret = bus_for_each_dev(&soc_bus_type, NULL, (void *)matches,
++ soc_device_match_one);
++ if (!ret)
++ matches++;
++ else
++ return matches;
++ }
++ return NULL;
++}
++EXPORT_SYMBOL_GPL(soc_device_match);
+diff --git a/include/linux/device.h b/include/linux/device.h
+index 8d732965..6d206930 100644
+--- a/include/linux/device.h
++++ b/include/linux/device.h
+@@ -688,6 +688,25 @@ void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res);
+ int devm_add_action(struct device *dev, void (*action)(void *), void *data);
+ void devm_remove_action(struct device *dev, void (*action)(void *), void *data);
+
++/**
++ * devm_alloc_percpu - Resource-managed alloc_percpu
++ * @dev: Device to allocate per-cpu memory for
++ * @type: Type to allocate per-cpu memory for
++ *
++ * Managed alloc_percpu. Per-cpu memory allocated with this function is
++ * automatically freed on driver detach.
++ *
++ * RETURNS:
++ * Pointer to allocated memory on success, NULL on failure.
++ */
++#define devm_alloc_percpu(dev, type) \
++ ((typeof(type) __percpu *)__devm_alloc_percpu((dev), sizeof(type), \
++ __alignof__(type)))
++
++void __percpu *__devm_alloc_percpu(struct device *dev, size_t size,
++ size_t align);
++void devm_free_percpu(struct device *dev, void __percpu *pdata);
++
+ static inline int devm_add_action_or_reset(struct device *dev,
+ void (*action)(void *), void *data)
+ {
+diff --git a/include/linux/fsl/svr.h b/include/linux/fsl/svr.h
+new file mode 100644
+index 00000000..e95c8f43
+--- /dev/null
++++ b/include/linux/fsl/svr.h
+@@ -0,0 +1,97 @@
++/*
++ * MPC85xx cpu type detection
++ *
++ * Copyright 2011-2012 Freescale Semiconductor, Inc.
++ *
++ * This is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++
++#ifndef FSL_SVR_H
++#define FSL_SVR_H
++
++#define SVR_REV(svr) ((svr) & 0xFF) /* SOC design resision */
++#define SVR_MAJ(svr) (((svr) >> 4) & 0xF) /* Major revision field*/
++#define SVR_MIN(svr) (((svr) >> 0) & 0xF) /* Minor revision field*/
++
++/* Some parts define SVR[0:23] as the SOC version */
++#define SVR_SOC_VER(svr) (((svr) >> 8) & 0xFFF7FF) /* SOC Version fields */
++
++#define SVR_8533 0x803400
++#define SVR_8535 0x803701
++#define SVR_8536 0x803700
++#define SVR_8540 0x803000
++#define SVR_8541 0x807200
++#define SVR_8543 0x803200
++#define SVR_8544 0x803401
++#define SVR_8545 0x803102
++#define SVR_8547 0x803101
++#define SVR_8548 0x803100
++#define SVR_8555 0x807100
++#define SVR_8560 0x807000
++#define SVR_8567 0x807501
++#define SVR_8568 0x807500
++#define SVR_8569 0x808000
++#define SVR_8572 0x80E000
++#define SVR_P1010 0x80F100
++#define SVR_P1011 0x80E500
++#define SVR_P1012 0x80E501
++#define SVR_P1013 0x80E700
++#define SVR_P1014 0x80F101
++#define SVR_P1017 0x80F700
++#define SVR_P1020 0x80E400
++#define SVR_P1021 0x80E401
++#define SVR_P1022 0x80E600
++#define SVR_P1023 0x80F600
++#define SVR_P1024 0x80E402
++#define SVR_P1025 0x80E403
++#define SVR_P2010 0x80E300
++#define SVR_P2020 0x80E200
++#define SVR_P2040 0x821000
++#define SVR_P2041 0x821001
++#define SVR_P3041 0x821103
++#define SVR_P4040 0x820100
++#define SVR_P4080 0x820000
++#define SVR_P5010 0x822100
++#define SVR_P5020 0x822000
++#define SVR_P5021 0X820500
++#define SVR_P5040 0x820400
++#define SVR_T4240 0x824000
++#define SVR_T4120 0x824001
++#define SVR_T4160 0x824100
++#define SVR_T4080 0x824102
++#define SVR_C291 0x850000
++#define SVR_C292 0x850020
++#define SVR_C293 0x850030
++#define SVR_B4860 0X868000
++#define SVR_G4860 0x868001
++#define SVR_G4060 0x868003
++#define SVR_B4440 0x868100
++#define SVR_G4440 0x868101
++#define SVR_B4420 0x868102
++#define SVR_B4220 0x868103
++#define SVR_T1040 0x852000
++#define SVR_T1041 0x852001
++#define SVR_T1042 0x852002
++#define SVR_T1020 0x852100
++#define SVR_T1021 0x852101
++#define SVR_T1022 0x852102
++#define SVR_T1023 0x854100
++#define SVR_T1024 0x854000
++#define SVR_T2080 0x853000
++#define SVR_T2081 0x853100
++
++#define SVR_8610 0x80A000
++#define SVR_8641 0x809000
++#define SVR_8641D 0x809001
++
++#define SVR_9130 0x860001
++#define SVR_9131 0x860000
++#define SVR_9132 0x861000
++#define SVR_9232 0x861400
++
++#define SVR_Unknown 0xFFFFFF
++
++#endif
+diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
+index f2912914..22308465 100644
+--- a/include/linux/fsl_devices.h
++++ b/include/linux/fsl_devices.h
+@@ -99,7 +99,10 @@ struct fsl_usb2_platform_data {
+ unsigned suspended:1;
+ unsigned already_suspended:1;
+ unsigned has_fsl_erratum_a007792:1;
++ unsigned has_fsl_erratum_14:1;
+ unsigned has_fsl_erratum_a005275:1;
++ unsigned has_fsl_erratum_a006918:1;
++ unsigned has_fsl_erratum_a005697:1;
+ unsigned check_phy_clk_valid:1;
+
+ /* register save area for suspend/resume */
+diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
+index 9c6c8ef2..90b4107e 100644
+--- a/include/linux/netdev_features.h
++++ b/include/linux/netdev_features.h
+@@ -74,6 +74,7 @@ enum {
+ NETIF_F_BUSY_POLL_BIT, /* Busy poll */
+
+ NETIF_F_HW_TC_BIT, /* Offload TC infrastructure */
++ NETIF_F_HW_ACCEL_MQ_BIT, /* Hardware-accelerated multiqueue */
+
+ /*
+ * Add your fresh new feature above and remember to update
+@@ -136,6 +137,7 @@ enum {
+ #define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD)
+ #define NETIF_F_BUSY_POLL __NETIF_F(BUSY_POLL)
+ #define NETIF_F_HW_TC __NETIF_F(HW_TC)
++#define NETIF_F_HW_ACCEL_MQ __NETIF_F(HW_ACCEL_MQ)
+
+ #define for_each_netdev_feature(mask_addr, bit) \
+ for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
+diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
+index c3a1537c..9740875b 100644
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -1509,6 +1509,8 @@ enum netdev_priv_flags {
+ * @if_port: Selectable AUI, TP, ...
+ * @dma: DMA channel
+ * @mtu: Interface MTU value
++ * @min_mtu: Interface Minimum MTU value
++ * @max_mtu: Interface Maximum MTU value
+ * @type: Interface hardware type
+ * @hard_header_len: Maximum hardware header length.
+ * @min_header_len: Minimum hardware header length
+@@ -1735,6 +1737,8 @@ struct net_device {
+ unsigned char dma;
+
+ unsigned int mtu;
++ unsigned int min_mtu;
++ unsigned int max_mtu;
+ unsigned short type;
+ unsigned short hard_header_len;
+ unsigned short min_header_len;
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index 9a0c945e..06f33c98 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -903,6 +903,7 @@ void kfree_skb(struct sk_buff *skb);
+ void kfree_skb_list(struct sk_buff *segs);
+ void skb_tx_error(struct sk_buff *skb);
+ void consume_skb(struct sk_buff *skb);
++void skb_recycle(struct sk_buff *skb);
+ void __kfree_skb(struct sk_buff *skb);
+ extern struct kmem_cache *skbuff_head_cache;
+
+@@ -3057,6 +3058,7 @@ static inline void skb_free_datagram_locked(struct sock *sk,
+ }
+ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags);
+ int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len);
++void copy_skb_header(struct sk_buff *new, const struct sk_buff *old);
+ int skb_store_bits(struct sk_buff *skb, int offset, const void *from, int len);
+ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, u8 *to,
+ int len, __wsum csum);
+diff --git a/include/linux/sys_soc.h b/include/linux/sys_soc.h
+index 2739ccb6..9f5eb06f 100644
+--- a/include/linux/sys_soc.h
++++ b/include/linux/sys_soc.h
+@@ -13,6 +13,7 @@ struct soc_device_attribute {
+ const char *family;
+ const char *revision;
+ const char *soc_id;
++ const void *data;
+ };
+
+ /**
+@@ -34,4 +35,6 @@ void soc_device_unregister(struct soc_device *soc_dev);
+ */
+ struct device *soc_device_to_device(struct soc_device *soc);
+
++const struct soc_device_attribute *soc_device_match(
++ const struct soc_device_attribute *matches);
+ #endif /* __SOC_BUS_H */
+diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
+index 51f38442..5c01afbf 100644
+--- a/include/uapi/linux/if_ether.h
++++ b/include/uapi/linux/if_ether.h
+@@ -35,6 +35,7 @@
+ #define ETH_DATA_LEN 1500 /* Max. octets in payload */
+ #define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */
+ #define ETH_FCS_LEN 4 /* Octets in the FCS */
++#define ETH_MIN_MTU 68 /* Min IPv4 MTU per RFC791 */
+
+ /*
+ * These are the defined Ethernet Protocol ID's.
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 512086f2..6e3bb7bc 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -6603,9 +6603,18 @@ int dev_set_mtu(struct net_device *dev, int new_mtu)
+ if (new_mtu == dev->mtu)
+ return 0;
+
+- /* MTU must be positive. */
+- if (new_mtu < 0)
++ /* MTU must be positive, and in range */
++ if (new_mtu < 0 || new_mtu < dev->min_mtu) {
++ net_err_ratelimited("%s: Invalid MTU %d requested, hw min %d\n",
++ dev->name, new_mtu, dev->min_mtu);
+ return -EINVAL;
++ }
++
++ if (dev->max_mtu > 0 && new_mtu > dev->max_mtu) {
++ net_err_ratelimited("%s: Invalid MTU %d requested, hw max %d\n",
++ dev->name, new_mtu, dev->min_mtu);
++ return -EINVAL;
++ }
+
+ if (!netif_device_present(dev))
+ return -ENODEV;
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 7e7b7ce0..0f9c014a 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -842,6 +842,32 @@ void napi_consume_skb(struct sk_buff *skb, int budget)
+ }
+ EXPORT_SYMBOL(napi_consume_skb);
+
++/**
++ * skb_recycle - clean up an skb for reuse
++ * @skb: buffer
++ *
++ * Recycles the skb to be reused as a receive buffer. This
++ * function does any necessary reference count dropping, and
++ * cleans up the skbuff as if it just came from __alloc_skb().
++ */
++void skb_recycle(struct sk_buff *skb)
++{
++ struct skb_shared_info *shinfo;
++ u8 head_frag = skb->head_frag;
++
++ skb_release_head_state(skb);
++
++ shinfo = skb_shinfo(skb);
++ memset(shinfo, 0, offsetof(struct skb_shared_info, dataref));
++ atomic_set(&shinfo->dataref, 1);
++
++ memset(skb, 0, offsetof(struct sk_buff, tail));
++ skb->data = skb->head + NET_SKB_PAD;
++ skb->head_frag = head_frag;
++ skb_reset_tail_pointer(skb);
++}
++EXPORT_SYMBOL(skb_recycle);
++
+ /* Make sure a field is enclosed inside headers_start/headers_end section */
+ #define CHECK_SKB_FIELD(field) \
+ BUILD_BUG_ON(offsetof(struct sk_buff, field) < \
+@@ -1073,7 +1099,7 @@ static void skb_headers_offset_update(struct sk_buff *skb, int off)
+ skb->inner_mac_header += off;
+ }
+
+-static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
++void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
+ {
+ __copy_skb_header(new, old);
+
+@@ -1081,6 +1107,7 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
+ skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs;
+ skb_shinfo(new)->gso_type = skb_shinfo(old)->gso_type;
+ }
++EXPORT_SYMBOL(copy_skb_header);
+
+ static inline int skb_alloc_rx_flag(const struct sk_buff *skb)
+ {
+diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
+index 8018dd3a..ea760b83 100644
+--- a/net/sched/sch_generic.c
++++ b/net/sched/sch_generic.c
+@@ -309,6 +309,13 @@ static void dev_watchdog(unsigned long arg)
+ txq->trans_timeout++;
+ break;
+ }
++
++ /* Devices with HW_ACCEL_MQ have multiple txqs
++ * but update only the first one's transmission
++ * timestamp so avoid checking the rest.
++ */
++ if (dev->features & NETIF_F_HW_ACCEL_MQ)
++ break;
+ }
+
+ if (some_queue_timedout) {
+--
+2.14.1
+
projects / openwrt / staging / chunkeey.git / blobdiff