From: Jakub Kicinski Date: Thu, 7 Oct 2021 01:06:54 +0000 (-0700) Subject: of: net: move of_net under net/ X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e330fb14590c;p=linux.git of: net: move of_net under net/ Rob suggests to move of_net.c from under drivers/of/ somewhere to the networking code. Suggested-by: Rob Herring Signed-off-by: Jakub Kicinski Reviewed-by: Rob Herring Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/amd/Kconfig b/drivers/net/ethernet/amd/Kconfig index 4786f0504691d..899c8a2a34b6b 100644 --- a/drivers/net/ethernet/amd/Kconfig +++ b/drivers/net/ethernet/amd/Kconfig @@ -168,7 +168,7 @@ config SUNLANCE config AMD_XGBE tristate "AMD 10GbE Ethernet driver" - depends on ((OF_NET && OF_ADDRESS) || ACPI || PCI) && HAS_IOMEM + depends on (OF_ADDRESS || ACPI || PCI) && HAS_IOMEM depends on X86 || ARM64 || COMPILE_TEST depends on PTP_1588_CLOCK_OPTIONAL select BITREVERSE diff --git a/drivers/net/ethernet/arc/Kconfig b/drivers/net/ethernet/arc/Kconfig index 37a41773dd435..840a9ce7ba1c2 100644 --- a/drivers/net/ethernet/arc/Kconfig +++ b/drivers/net/ethernet/arc/Kconfig @@ -25,7 +25,7 @@ config ARC_EMAC_CORE config ARC_EMAC tristate "ARC EMAC support" select ARC_EMAC_CORE - depends on OF_IRQ && OF_NET + depends on OF_IRQ depends on ARC || COMPILE_TEST help On some legacy ARC (Synopsys) FPGA boards such as ARCAngel4/ML50x @@ -35,7 +35,7 @@ config ARC_EMAC config EMAC_ROCKCHIP tristate "Rockchip EMAC support" select ARC_EMAC_CORE - depends on OF_IRQ && OF_NET && REGULATOR + depends on OF_IRQ && REGULATOR depends on ARCH_ROCKCHIP || COMPILE_TEST help Support for Rockchip RK3036/RK3066/RK3188 EMAC ethernet controllers. diff --git a/drivers/net/ethernet/ezchip/Kconfig b/drivers/net/ethernet/ezchip/Kconfig index 38aa824efb25d..9241b9b1c7a36 100644 --- a/drivers/net/ethernet/ezchip/Kconfig +++ b/drivers/net/ethernet/ezchip/Kconfig @@ -18,7 +18,7 @@ if NET_VENDOR_EZCHIP config EZCHIP_NPS_MANAGEMENT_ENET tristate "EZchip NPS management enet support" - depends on OF_IRQ && OF_NET + depends on OF_IRQ depends on HAS_IOMEM help Simple LAN device for debug or management purposes. diff --git a/drivers/net/ethernet/litex/Kconfig b/drivers/net/ethernet/litex/Kconfig index 63bf01d28f0cf..f99adbf26ab4e 100644 --- a/drivers/net/ethernet/litex/Kconfig +++ b/drivers/net/ethernet/litex/Kconfig @@ -17,7 +17,7 @@ if NET_VENDOR_LITEX config LITEX_LITEETH tristate "LiteX Ethernet support" - depends on OF_NET + depends on OF help If you wish to compile a kernel for hardware with a LiteX LiteEth device then you should answer Y to this. diff --git a/drivers/net/ethernet/mscc/Kconfig b/drivers/net/ethernet/mscc/Kconfig index b6a73d151dec1..8dd8c7f425d2c 100644 --- a/drivers/net/ethernet/mscc/Kconfig +++ b/drivers/net/ethernet/mscc/Kconfig @@ -28,7 +28,7 @@ config MSCC_OCELOT_SWITCH depends on BRIDGE || BRIDGE=n depends on NET_SWITCHDEV depends on HAS_IOMEM - depends on OF_NET + depends on OF select MSCC_OCELOT_SWITCH_LIB select GENERIC_PHY help diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 3dfeae8912dfc..80b5fd44ab1c7 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -70,10 +70,6 @@ config OF_IRQ def_bool y depends on !SPARC && IRQ_DOMAIN -config OF_NET - depends on NETDEVICES - def_bool y - config OF_RESERVED_MEM def_bool OF_EARLY_FLATTREE diff --git a/drivers/of/Makefile b/drivers/of/Makefile index c13b982084a3a..e0360a44306e2 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -7,7 +7,6 @@ obj-$(CONFIG_OF_EARLY_FLATTREE) += fdt_address.o obj-$(CONFIG_OF_PROMTREE) += pdt.o obj-$(CONFIG_OF_ADDRESS) += address.o obj-$(CONFIG_OF_IRQ) += irq.o -obj-$(CONFIG_OF_NET) += of_net.o obj-$(CONFIG_OF_UNITTEST) += unittest.o obj-$(CONFIG_OF_RESERVED_MEM) += of_reserved_mem.o obj-$(CONFIG_OF_RESOLVE) += resolver.o diff --git a/drivers/of/of_net.c b/drivers/of/of_net.c deleted file mode 100644 index dbac3a172a11e..0000000000000 --- a/drivers/of/of_net.c +++ /dev/null @@ -1,145 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * OF helpers for network devices. - * - * Initially copied out of arch/powerpc/kernel/prom_parse.c - */ -#include -#include -#include -#include -#include -#include -#include -#include - -/** - * of_get_phy_mode - Get phy mode for given device_node - * @np: Pointer to the given device_node - * @interface: Pointer to the result - * - * The function gets phy interface string from property 'phy-mode' or - * 'phy-connection-type'. The index in phy_modes table is set in - * interface and 0 returned. In case of error interface is set to - * PHY_INTERFACE_MODE_NA and an errno is returned, e.g. -ENODEV. - */ -int of_get_phy_mode(struct device_node *np, phy_interface_t *interface) -{ - const char *pm; - int err, i; - - *interface = PHY_INTERFACE_MODE_NA; - - err = of_property_read_string(np, "phy-mode", &pm); - if (err < 0) - err = of_property_read_string(np, "phy-connection-type", &pm); - if (err < 0) - return err; - - for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++) - if (!strcasecmp(pm, phy_modes(i))) { - *interface = i; - return 0; - } - - return -ENODEV; -} -EXPORT_SYMBOL_GPL(of_get_phy_mode); - -static int of_get_mac_addr(struct device_node *np, const char *name, u8 *addr) -{ - struct property *pp = of_find_property(np, name, NULL); - - if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value)) { - memcpy(addr, pp->value, ETH_ALEN); - return 0; - } - return -ENODEV; -} - -static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr) -{ - struct platform_device *pdev = of_find_device_by_node(np); - struct nvmem_cell *cell; - const void *mac; - size_t len; - int ret; - - /* Try lookup by device first, there might be a nvmem_cell_lookup - * associated with a given device. - */ - if (pdev) { - ret = nvmem_get_mac_address(&pdev->dev, addr); - put_device(&pdev->dev); - return ret; - } - - cell = of_nvmem_cell_get(np, "mac-address"); - if (IS_ERR(cell)) - return PTR_ERR(cell); - - mac = nvmem_cell_read(cell, &len); - nvmem_cell_put(cell); - - if (IS_ERR(mac)) - return PTR_ERR(mac); - - if (len != ETH_ALEN || !is_valid_ether_addr(mac)) { - kfree(mac); - return -EINVAL; - } - - memcpy(addr, mac, ETH_ALEN); - kfree(mac); - - return 0; -} - -/** - * of_get_mac_address() - * @np: Caller's Device Node - * @addr: Pointer to a six-byte array for the result - * - * Search the device tree for the best MAC address to use. 'mac-address' is - * checked first, because that is supposed to contain to "most recent" MAC - * address. If that isn't set, then 'local-mac-address' is checked next, - * because that is the default address. If that isn't set, then the obsolete - * 'address' is checked, just in case we're using an old device tree. If any - * of the above isn't set, then try to get MAC address from nvmem cell named - * 'mac-address'. - * - * Note that the 'address' property is supposed to contain a virtual address of - * the register set, but some DTS files have redefined that property to be the - * MAC address. - * - * All-zero MAC addresses are rejected, because those could be properties that - * exist in the device tree, but were not set by U-Boot. For example, the - * DTS could define 'mac-address' and 'local-mac-address', with zero MAC - * addresses. Some older U-Boots only initialized 'local-mac-address'. In - * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists - * but is all zeros. - * - * Return: 0 on success and errno in case of error. -*/ -int of_get_mac_address(struct device_node *np, u8 *addr) -{ - int ret; - - if (!np) - return -ENODEV; - - ret = of_get_mac_addr(np, "mac-address", addr); - if (!ret) - return 0; - - ret = of_get_mac_addr(np, "local-mac-address", addr); - if (!ret) - return 0; - - ret = of_get_mac_addr(np, "address", addr); - if (!ret) - return 0; - - return of_get_mac_addr_nvmem(np, addr); -} -EXPORT_SYMBOL(of_get_mac_address); diff --git a/include/linux/of_net.h b/include/linux/of_net.h index daef3b0d9270d..cf31188329b5a 100644 --- a/include/linux/of_net.h +++ b/include/linux/of_net.h @@ -8,7 +8,7 @@ #include -#ifdef CONFIG_OF_NET +#ifdef CONFIG_OF #include struct net_device; diff --git a/net/core/Makefile b/net/core/Makefile index 35ced6201814c..4268846f2f475 100644 --- a/net/core/Makefile +++ b/net/core/Makefile @@ -36,3 +36,4 @@ obj-$(CONFIG_FAILOVER) += failover.o obj-$(CONFIG_NET_SOCK_MSG) += skmsg.o obj-$(CONFIG_BPF_SYSCALL) += sock_map.o obj-$(CONFIG_BPF_SYSCALL) += bpf_sk_storage.o +obj-$(CONFIG_OF) += of_net.o diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index f6197774048b6..ae001c2ca2af6 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -1869,7 +1869,7 @@ static struct class net_class __ro_after_init = { .get_ownership = net_get_ownership, }; -#ifdef CONFIG_OF_NET +#ifdef CONFIG_OF static int of_dev_node_match(struct device *dev, const void *data) { for (; dev; dev = dev->parent) { diff --git a/net/core/of_net.c b/net/core/of_net.c new file mode 100644 index 0000000000000..dbac3a172a11e --- /dev/null +++ b/net/core/of_net.c @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * OF helpers for network devices. + * + * Initially copied out of arch/powerpc/kernel/prom_parse.c + */ +#include +#include +#include +#include +#include +#include +#include +#include + +/** + * of_get_phy_mode - Get phy mode for given device_node + * @np: Pointer to the given device_node + * @interface: Pointer to the result + * + * The function gets phy interface string from property 'phy-mode' or + * 'phy-connection-type'. The index in phy_modes table is set in + * interface and 0 returned. In case of error interface is set to + * PHY_INTERFACE_MODE_NA and an errno is returned, e.g. -ENODEV. + */ +int of_get_phy_mode(struct device_node *np, phy_interface_t *interface) +{ + const char *pm; + int err, i; + + *interface = PHY_INTERFACE_MODE_NA; + + err = of_property_read_string(np, "phy-mode", &pm); + if (err < 0) + err = of_property_read_string(np, "phy-connection-type", &pm); + if (err < 0) + return err; + + for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++) + if (!strcasecmp(pm, phy_modes(i))) { + *interface = i; + return 0; + } + + return -ENODEV; +} +EXPORT_SYMBOL_GPL(of_get_phy_mode); + +static int of_get_mac_addr(struct device_node *np, const char *name, u8 *addr) +{ + struct property *pp = of_find_property(np, name, NULL); + + if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value)) { + memcpy(addr, pp->value, ETH_ALEN); + return 0; + } + return -ENODEV; +} + +static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr) +{ + struct platform_device *pdev = of_find_device_by_node(np); + struct nvmem_cell *cell; + const void *mac; + size_t len; + int ret; + + /* Try lookup by device first, there might be a nvmem_cell_lookup + * associated with a given device. + */ + if (pdev) { + ret = nvmem_get_mac_address(&pdev->dev, addr); + put_device(&pdev->dev); + return ret; + } + + cell = of_nvmem_cell_get(np, "mac-address"); + if (IS_ERR(cell)) + return PTR_ERR(cell); + + mac = nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + + if (IS_ERR(mac)) + return PTR_ERR(mac); + + if (len != ETH_ALEN || !is_valid_ether_addr(mac)) { + kfree(mac); + return -EINVAL; + } + + memcpy(addr, mac, ETH_ALEN); + kfree(mac); + + return 0; +} + +/** + * of_get_mac_address() + * @np: Caller's Device Node + * @addr: Pointer to a six-byte array for the result + * + * Search the device tree for the best MAC address to use. 'mac-address' is + * checked first, because that is supposed to contain to "most recent" MAC + * address. If that isn't set, then 'local-mac-address' is checked next, + * because that is the default address. If that isn't set, then the obsolete + * 'address' is checked, just in case we're using an old device tree. If any + * of the above isn't set, then try to get MAC address from nvmem cell named + * 'mac-address'. + * + * Note that the 'address' property is supposed to contain a virtual address of + * the register set, but some DTS files have redefined that property to be the + * MAC address. + * + * All-zero MAC addresses are rejected, because those could be properties that + * exist in the device tree, but were not set by U-Boot. For example, the + * DTS could define 'mac-address' and 'local-mac-address', with zero MAC + * addresses. Some older U-Boots only initialized 'local-mac-address'. In + * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists + * but is all zeros. + * + * Return: 0 on success and errno in case of error. +*/ +int of_get_mac_address(struct device_node *np, u8 *addr) +{ + int ret; + + if (!np) + return -ENODEV; + + ret = of_get_mac_addr(np, "mac-address", addr); + if (!ret) + return 0; + + ret = of_get_mac_addr(np, "local-mac-address", addr); + if (!ret) + return 0; + + ret = of_get_mac_addr(np, "address", addr); + if (!ret) + return 0; + + return of_get_mac_addr_nvmem(np, addr); +} +EXPORT_SYMBOL(of_get_mac_address);