OpenCloudOS-Kernel/include/linux/phy.h

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Framework and drivers for configuring and reading different PHYs
* Based on code in sungem_phy.c and (long-removed) gianfar_phy.c
*
* Author: Andy Fleming
*
* Copyright (c) 2004 Freescale Semiconductor, Inc.
*/
#ifndef __PHY_H
#define __PHY_H
#include <linux/compiler.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/linkmode.h>
#include <linux/netlink.h>
#include <linux/mdio.h>
#include <linux/mii.h>
#include <linux/mii_timestamper.h>
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <linux/mod_devicetable.h>
#include <linux/u64_stats_sync.h>
#include <linux/irqreturn.h>
#include <linux/iopoll.h>
#include <linux/refcount.h>
#include <linux/atomic.h>
PHYLIB: IRQ event workqueue handling fixes Keep track of disable_irq_nosync() invocations and call enable_irq() the right number of times if work has been cancelled that would include them. Now that the call to flush_work_keventd() (problematic because of rtnl_mutex being held) has been replaced by cancel_work_sync() another issue has arisen and been left unresolved. As the MDIO bus cannot be accessed from the interrupt context the PHY interrupt handler uses disable_irq_nosync() to prevent from looping and schedules some work to be done as a softirq, which, apart from handling the state change of the originating PHY, is responsible for reenabling the interrupt. Now if the interrupt line is shared by another device and a call to the softirq handler has been cancelled, that call to enable_irq() never happens and the other device cannot use its interrupt anymore as its stuck disabled. I decided to use a counter rather than a flag because there may be more than one call to phy_change() cancelled in the queue -- a real one and a fake one triggered by free_irq() if DEBUG_SHIRQ is used, if nothing else. Therefore because of its nesting property enable_irq() has to be called the right number of times to match the number disable_irq_nosync() was called and restore the original state. This DEBUG_SHIRQ feature is also the reason why free_irq() has to be called before cancel_work_sync(). While at it I updated the comment about phy_stop_interrupts() being called from `keventd' -- this is no longer relevant as the use of cancel_work_sync() makes such an approach unnecessary. OTOH a similar comment referring to flush_scheduled_work() in phy_stop() still applies as using cancel_work_sync() there would be dangerous. Checked with checkpatch.pl and at the run time (with and without DEBUG_SHIRQ). Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: Andy Fleming <afleming@freescale.com> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-29 13:42:14 +08:00
#define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
SUPPORTED_TP | \
SUPPORTED_MII)
#define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
SUPPORTED_10baseT_Full)
#define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
SUPPORTED_100baseT_Full)
#define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
SUPPORTED_1000baseT_Full)
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features) __ro_after_init;
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features) __ro_after_init;
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init;
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init;
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features) __ro_after_init;
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features) __ro_after_init;
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_fec_features) __ro_after_init;
extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features) __ro_after_init;
#define PHY_BASIC_FEATURES ((unsigned long *)&phy_basic_features)
#define PHY_BASIC_T1_FEATURES ((unsigned long *)&phy_basic_t1_features)
#define PHY_GBIT_FEATURES ((unsigned long *)&phy_gbit_features)
#define PHY_GBIT_FIBRE_FEATURES ((unsigned long *)&phy_gbit_fibre_features)
#define PHY_GBIT_ALL_PORTS_FEATURES ((unsigned long *)&phy_gbit_all_ports_features)
#define PHY_10GBIT_FEATURES ((unsigned long *)&phy_10gbit_features)
#define PHY_10GBIT_FEC_FEATURES ((unsigned long *)&phy_10gbit_fec_features)
#define PHY_10GBIT_FULL_FEATURES ((unsigned long *)&phy_10gbit_full_features)
extern const int phy_basic_ports_array[3];
extern const int phy_fibre_port_array[1];
extern const int phy_all_ports_features_array[7];
extern const int phy_10_100_features_array[4];
extern const int phy_basic_t1_features_array[3];
extern const int phy_gbit_features_array[2];
extern const int phy_10gbit_features_array[1];
/*
* Set phydev->irq to PHY_POLL if interrupts are not supported,
* or not desired for this PHY. Set to PHY_MAC_INTERRUPT if
* the attached MAC driver handles the interrupt
*/
#define PHY_POLL -1
#define PHY_MAC_INTERRUPT -2
#define PHY_IS_INTERNAL 0x00000001
#define PHY_RST_AFTER_CLK_EN 0x00000002
#define PHY_POLL_CABLE_TEST 0x00000004
#define MDIO_DEVICE_IS_PHY 0x80000000
/**
* enum phy_interface_t - Interface Mode definitions
*
* @PHY_INTERFACE_MODE_NA: Not Applicable - don't touch
* @PHY_INTERFACE_MODE_INTERNAL: No interface, MAC and PHY combined
* @PHY_INTERFACE_MODE_MII: Media-independent interface
* @PHY_INTERFACE_MODE_GMII: Gigabit media-independent interface
* @PHY_INTERFACE_MODE_SGMII: Serial gigabit media-independent interface
* @PHY_INTERFACE_MODE_TBI: Ten Bit Interface
* @PHY_INTERFACE_MODE_REVMII: Reverse Media Independent Interface
* @PHY_INTERFACE_MODE_RMII: Reduced Media Independent Interface
net: phy: introduce PHY_INTERFACE_MODE_REVRMII The "reverse RMII" protocol name is a personal invention, derived from "reverse MII". Just like MII, RMII is an asymmetric protocol in that a PHY behaves differently than a MAC. In the case of RMII, for example: - the 50 MHz clock signals are either driven by the MAC or by an external oscillator (but never by the PHY). - the PHY can transmit extra in-band control symbols via RXD[1:0] which the MAC is supposed to understand, but a PHY isn't. The "reverse MII" protocol is not standardized either, except for this web document: https://www.eetimes.com/reverse-media-independent-interface-revmii-block-architecture/# In short, it means that the Ethernet controller speaks the 4-bit data parallel protocol from the perspective of a PHY (it acts like a PHY). This might mean that it implements clause 22 compatible registers, although that is optional - the important bit is that its pins can be connected to an MII MAC and it will 'just work'. In this discussion thread: https://lore.kernel.org/netdev/20210201214515.cx6ivvme2tlquge2@skbuf/ we agreed that it would be an abuse of terms to use the "RevMII" name for anything than the 4-bit parallel MII protocol. But since all the same concepts can be applied to the 2-bit Reduced MII protocol as well, here we are introducing a "Reverse RMII" protocol. This means: "behave like an RMII PHY". Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-04 22:01:48 +08:00
* @PHY_INTERFACE_MODE_REVRMII: Reduced Media Independent Interface in PHY role
* @PHY_INTERFACE_MODE_RGMII: Reduced gigabit media-independent interface
* @PHY_INTERFACE_MODE_RGMII_ID: RGMII with Internal RX+TX delay
* @PHY_INTERFACE_MODE_RGMII_RXID: RGMII with Internal RX delay
* @PHY_INTERFACE_MODE_RGMII_TXID: RGMII with Internal RX delay
* @PHY_INTERFACE_MODE_RTBI: Reduced TBI
* @PHY_INTERFACE_MODE_SMII: Serial MII
* @PHY_INTERFACE_MODE_XGMII: 10 gigabit media-independent interface
* @PHY_INTERFACE_MODE_XLGMII:40 gigabit media-independent interface
* @PHY_INTERFACE_MODE_MOCA: Multimedia over Coax
* @PHY_INTERFACE_MODE_QSGMII: Quad SGMII
* @PHY_INTERFACE_MODE_TRGMII: Turbo RGMII
* @PHY_INTERFACE_MODE_100BASEX: 100 BaseX
* @PHY_INTERFACE_MODE_1000BASEX: 1000 BaseX
* @PHY_INTERFACE_MODE_2500BASEX: 2500 BaseX
* @PHY_INTERFACE_MODE_5GBASER: 5G BaseR
* @PHY_INTERFACE_MODE_RXAUI: Reduced XAUI
* @PHY_INTERFACE_MODE_XAUI: 10 Gigabit Attachment Unit Interface
* @PHY_INTERFACE_MODE_10GBASER: 10G BaseR
* @PHY_INTERFACE_MODE_25GBASER: 25G BaseR
* @PHY_INTERFACE_MODE_USXGMII: Universal Serial 10GE MII
* @PHY_INTERFACE_MODE_10GKR: 10GBASE-KR - with Clause 73 AN
* @PHY_INTERFACE_MODE_MAX: Book keeping
*
* Describes the interface between the MAC and PHY.
*/
typedef enum {
PHY_INTERFACE_MODE_NA,
PHY_INTERFACE_MODE_INTERNAL,
PHY_INTERFACE_MODE_MII,
PHY_INTERFACE_MODE_GMII,
PHY_INTERFACE_MODE_SGMII,
PHY_INTERFACE_MODE_TBI,
PHY_INTERFACE_MODE_REVMII,
PHY_INTERFACE_MODE_RMII,
net: phy: introduce PHY_INTERFACE_MODE_REVRMII The "reverse RMII" protocol name is a personal invention, derived from "reverse MII". Just like MII, RMII is an asymmetric protocol in that a PHY behaves differently than a MAC. In the case of RMII, for example: - the 50 MHz clock signals are either driven by the MAC or by an external oscillator (but never by the PHY). - the PHY can transmit extra in-band control symbols via RXD[1:0] which the MAC is supposed to understand, but a PHY isn't. The "reverse MII" protocol is not standardized either, except for this web document: https://www.eetimes.com/reverse-media-independent-interface-revmii-block-architecture/# In short, it means that the Ethernet controller speaks the 4-bit data parallel protocol from the perspective of a PHY (it acts like a PHY). This might mean that it implements clause 22 compatible registers, although that is optional - the important bit is that its pins can be connected to an MII MAC and it will 'just work'. In this discussion thread: https://lore.kernel.org/netdev/20210201214515.cx6ivvme2tlquge2@skbuf/ we agreed that it would be an abuse of terms to use the "RevMII" name for anything than the 4-bit parallel MII protocol. But since all the same concepts can be applied to the 2-bit Reduced MII protocol as well, here we are introducing a "Reverse RMII" protocol. This means: "behave like an RMII PHY". Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-04 22:01:48 +08:00
PHY_INTERFACE_MODE_REVRMII,
PHY_INTERFACE_MODE_RGMII,
PHY_INTERFACE_MODE_RGMII_ID,
PHY_INTERFACE_MODE_RGMII_RXID,
PHY_INTERFACE_MODE_RGMII_TXID,
PHY_INTERFACE_MODE_RTBI,
PHY_INTERFACE_MODE_SMII,
PHY_INTERFACE_MODE_XGMII,
PHY_INTERFACE_MODE_XLGMII,
PHY_INTERFACE_MODE_MOCA,
PHY_INTERFACE_MODE_QSGMII,
PHY_INTERFACE_MODE_TRGMII,
PHY_INTERFACE_MODE_100BASEX,
PHY_INTERFACE_MODE_1000BASEX,
PHY_INTERFACE_MODE_2500BASEX,
PHY_INTERFACE_MODE_5GBASER,
PHY_INTERFACE_MODE_RXAUI,
PHY_INTERFACE_MODE_XAUI,
/* 10GBASE-R, XFI, SFI - single lane 10G Serdes */
PHY_INTERFACE_MODE_10GBASER,
PHY_INTERFACE_MODE_25GBASER,
PHY_INTERFACE_MODE_USXGMII,
/* 10GBASE-KR - with Clause 73 AN */
PHY_INTERFACE_MODE_10GKR,
PHY_INTERFACE_MODE_MAX,
} phy_interface_t;
/* PHY interface mode bitmap handling */
#define DECLARE_PHY_INTERFACE_MASK(name) \
DECLARE_BITMAP(name, PHY_INTERFACE_MODE_MAX)
static inline void phy_interface_zero(unsigned long *intf)
{
bitmap_zero(intf, PHY_INTERFACE_MODE_MAX);
}
static inline bool phy_interface_empty(const unsigned long *intf)
{
return bitmap_empty(intf, PHY_INTERFACE_MODE_MAX);
}
static inline void phy_interface_and(unsigned long *dst, const unsigned long *a,
const unsigned long *b)
{
bitmap_and(dst, a, b, PHY_INTERFACE_MODE_MAX);
}
static inline void phy_interface_or(unsigned long *dst, const unsigned long *a,
const unsigned long *b)
{
bitmap_or(dst, a, b, PHY_INTERFACE_MODE_MAX);
}
static inline void phy_interface_set_rgmii(unsigned long *intf)
{
__set_bit(PHY_INTERFACE_MODE_RGMII, intf);
__set_bit(PHY_INTERFACE_MODE_RGMII_ID, intf);
__set_bit(PHY_INTERFACE_MODE_RGMII_RXID, intf);
__set_bit(PHY_INTERFACE_MODE_RGMII_TXID, intf);
}
net: phy: remove kernel-doc duplication Sphinx 3 now checks for duplicated function declarations: .../Documentation/networking/kapi:143: ../include/linux/phy.h:163: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'unsigned int phy_supported_speeds (struct phy_device *phy, unsigned int *speeds, unsigned int size)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1034: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1076: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1088: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1100: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. It turns that both the C and the H files have the same kernel-doc markup for the same functions. Let's drop the at the header file, keeping the one closer to the code. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/75e9a357f9a716833d2094b04898754876365e68.1603791716.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-27 17:51:18 +08:00
/*
* phy_supported_speeds - return all speeds currently supported by a PHY device
*/
unsigned int phy_supported_speeds(struct phy_device *phy,
unsigned int *speeds,
unsigned int size);
/**
* phy_modes - map phy_interface_t enum to device tree binding of phy-mode
* @interface: enum phy_interface_t value
*
* Description: maps enum &phy_interface_t defined in this file
* into the device tree binding of 'phy-mode', so that Ethernet
* device driver can get PHY interface from device tree.
*/
static inline const char *phy_modes(phy_interface_t interface)
{
switch (interface) {
case PHY_INTERFACE_MODE_NA:
return "";
case PHY_INTERFACE_MODE_INTERNAL:
return "internal";
case PHY_INTERFACE_MODE_MII:
return "mii";
case PHY_INTERFACE_MODE_GMII:
return "gmii";
case PHY_INTERFACE_MODE_SGMII:
return "sgmii";
case PHY_INTERFACE_MODE_TBI:
return "tbi";
case PHY_INTERFACE_MODE_REVMII:
return "rev-mii";
case PHY_INTERFACE_MODE_RMII:
return "rmii";
net: phy: introduce PHY_INTERFACE_MODE_REVRMII The "reverse RMII" protocol name is a personal invention, derived from "reverse MII". Just like MII, RMII is an asymmetric protocol in that a PHY behaves differently than a MAC. In the case of RMII, for example: - the 50 MHz clock signals are either driven by the MAC or by an external oscillator (but never by the PHY). - the PHY can transmit extra in-band control symbols via RXD[1:0] which the MAC is supposed to understand, but a PHY isn't. The "reverse MII" protocol is not standardized either, except for this web document: https://www.eetimes.com/reverse-media-independent-interface-revmii-block-architecture/# In short, it means that the Ethernet controller speaks the 4-bit data parallel protocol from the perspective of a PHY (it acts like a PHY). This might mean that it implements clause 22 compatible registers, although that is optional - the important bit is that its pins can be connected to an MII MAC and it will 'just work'. In this discussion thread: https://lore.kernel.org/netdev/20210201214515.cx6ivvme2tlquge2@skbuf/ we agreed that it would be an abuse of terms to use the "RevMII" name for anything than the 4-bit parallel MII protocol. But since all the same concepts can be applied to the 2-bit Reduced MII protocol as well, here we are introducing a "Reverse RMII" protocol. This means: "behave like an RMII PHY". Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-04 22:01:48 +08:00
case PHY_INTERFACE_MODE_REVRMII:
return "rev-rmii";
case PHY_INTERFACE_MODE_RGMII:
return "rgmii";
case PHY_INTERFACE_MODE_RGMII_ID:
return "rgmii-id";
case PHY_INTERFACE_MODE_RGMII_RXID:
return "rgmii-rxid";
case PHY_INTERFACE_MODE_RGMII_TXID:
return "rgmii-txid";
case PHY_INTERFACE_MODE_RTBI:
return "rtbi";
case PHY_INTERFACE_MODE_SMII:
return "smii";
case PHY_INTERFACE_MODE_XGMII:
return "xgmii";
case PHY_INTERFACE_MODE_XLGMII:
return "xlgmii";
case PHY_INTERFACE_MODE_MOCA:
return "moca";
case PHY_INTERFACE_MODE_QSGMII:
return "qsgmii";
case PHY_INTERFACE_MODE_TRGMII:
return "trgmii";
case PHY_INTERFACE_MODE_1000BASEX:
return "1000base-x";
case PHY_INTERFACE_MODE_2500BASEX:
return "2500base-x";
case PHY_INTERFACE_MODE_5GBASER:
return "5gbase-r";
case PHY_INTERFACE_MODE_RXAUI:
return "rxaui";
case PHY_INTERFACE_MODE_XAUI:
return "xaui";
case PHY_INTERFACE_MODE_10GBASER:
return "10gbase-r";
case PHY_INTERFACE_MODE_25GBASER:
return "25gbase-r";
case PHY_INTERFACE_MODE_USXGMII:
return "usxgmii";
case PHY_INTERFACE_MODE_10GKR:
return "10gbase-kr";
case PHY_INTERFACE_MODE_100BASEX:
return "100base-x";
default:
return "unknown";
}
}
#define PHY_INIT_TIMEOUT 100000
#define PHY_FORCE_TIMEOUT 10
#define PHY_MAX_ADDR 32
/* Used when trying to connect to a specific phy (mii bus id:phy device id) */
#define PHY_ID_FMT "%s:%02x"
#define MII_BUS_ID_SIZE 61
struct device;
phylink: add phylink infrastructure The link between the ethernet MAC and its PHY has become more complex as the interface evolves. This is especially true with serdes links, where the part of the PHY is effectively integrated into the MAC. Serdes links can be connected to a variety of devices, including SFF modules soldered down onto the board with the MAC, a SFP cage with a hotpluggable SFP module which may contain a PHY or directly modulate the serdes signals onto optical media with or without a PHY, or even a classical PHY connection. Moreover, the negotiation information on serdes links comes in two varieties - SGMII mode, where the PHY provides its speed/duplex/flow control information to the MAC, and 1000base-X mode where both ends exchange their abilities and each resolve the link capabilities. This means we need a more flexible means to support these arrangements, particularly with the hotpluggable nature of SFP, where the PHY can be attached or detached after the network device has been brought up. Ethtool information can come from multiple sources: - we may have a PHY operating in either SGMII or 1000base-X mode, in which case we take ethtool/mii data directly from the PHY. - we may have a optical SFP module without a PHY, with the MAC operating in 1000base-X mode - the ethtool/mii data needs to come from the MAC. - we may have a copper SFP module with a PHY whic can't be accessed, which means we need to take ethtool/mii data from the MAC. Phylink aims to solve this by providing an intermediary between the MAC and PHY, providing a safe way for PHYs to be hotplugged, and allowing a SFP driver to reconfigure the serdes connection. Phylink also takes over support of fixed link connections, where the speed/duplex/flow control are fixed, but link status may be controlled by a GPIO signal. By avoiding the fixed-phy implementation, phylink can provide a faster response to link events: fixed-phy has to wait for phylib to operate its state machine, which can take several seconds. In comparison, phylink takes milliseconds. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> - remove sync status - rework supported and advertisment handling - add 1000base-x speed for fixed links - use functionality exported from phy-core, reworking __phylink_ethtool_ksettings_set for it Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-25 22:03:13 +08:00
struct phylink;
struct sfp_bus;
struct sfp_upstream_ops;
struct sk_buff;
/**
* struct mdio_bus_stats - Statistics counters for MDIO busses
* @transfers: Total number of transfers, i.e. @writes + @reads
* @errors: Number of MDIO transfers that returned an error
* @writes: Number of write transfers
* @reads: Number of read transfers
* @syncp: Synchronisation for incrementing statistics
*/
struct mdio_bus_stats {
u64_stats_t transfers;
u64_stats_t errors;
u64_stats_t writes;
u64_stats_t reads;
/* Must be last, add new statistics above */
struct u64_stats_sync syncp;
};
/**
* struct phy_package_shared - Shared information in PHY packages
* @addr: Common PHY address used to combine PHYs in one package
* @refcnt: Number of PHYs connected to this shared data
* @flags: Initialization of PHY package
* @priv_size: Size of the shared private data @priv
* @priv: Driver private data shared across a PHY package
*
* Represents a shared structure between different phydev's in the same
* package, for example a quad PHY. See phy_package_join() and
* phy_package_leave().
*/
struct phy_package_shared {
int addr;
refcount_t refcnt;
unsigned long flags;
size_t priv_size;
/* private data pointer */
/* note that this pointer is shared between different phydevs and
* the user has to take care of appropriate locking. It is allocated
* and freed automatically by phy_package_join() and
* phy_package_leave().
*/
void *priv;
};
/* used as bit number in atomic bitops */
#define PHY_SHARED_F_INIT_DONE 0
#define PHY_SHARED_F_PROBE_DONE 1
/**
* struct mii_bus - Represents an MDIO bus
*
* @owner: Who owns this device
* @name: User friendly name for this MDIO device, or driver name
* @id: Unique identifier for this bus, typical from bus hierarchy
* @priv: Driver private data
*
* The Bus class for PHYs. Devices which provide access to
* PHYs should register using this structure
*/
struct mii_bus {
struct module *owner;
const char *name;
char id[MII_BUS_ID_SIZE];
void *priv;
/** @read: Perform a read transfer on the bus */
int (*read)(struct mii_bus *bus, int addr, int regnum);
/** @write: Perform a write transfer on the bus */
int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val);
/** @reset: Perform a reset of the bus */
int (*reset)(struct mii_bus *bus);
/** @stats: Statistic counters per device on the bus */
struct mdio_bus_stats stats[PHY_MAX_ADDR];
/**
* @mdio_lock: A lock to ensure that only one thing can read/write
* the MDIO bus at a time
*/
struct mutex mdio_lock;
/** @parent: Parent device of this bus */
struct device *parent;
/** @state: State of bus structure */
enum {
MDIOBUS_ALLOCATED = 1,
MDIOBUS_REGISTERED,
MDIOBUS_UNREGISTERED,
MDIOBUS_RELEASED,
} state;
/** @dev: Kernel device representation */
struct device dev;
/** @mdio_map: list of all MDIO devices on bus */
struct mdio_device *mdio_map[PHY_MAX_ADDR];
/** @phy_mask: PHY addresses to be ignored when probing */
u32 phy_mask;
/** @phy_ignore_ta_mask: PHY addresses to ignore the TA/read failure */
u32 phy_ignore_ta_mask;
/**
* @irq: An array of interrupts, each PHY's interrupt at the index
* matching its address
*/
int irq[PHY_MAX_ADDR];
/** @reset_delay_us: GPIO reset pulse width in microseconds */
int reset_delay_us;
/** @reset_post_delay_us: GPIO reset deassert delay in microseconds */
int reset_post_delay_us;
/** @reset_gpiod: Reset GPIO descriptor pointer */
struct gpio_desc *reset_gpiod;
/** @probe_capabilities: bus capabilities, used for probing */
enum {
MDIOBUS_NO_CAP = 0,
MDIOBUS_C22,
MDIOBUS_C45,
MDIOBUS_C22_C45,
} probe_capabilities;
/** @shared_lock: protect access to the shared element */
struct mutex shared_lock;
/** @shared: shared state across different PHYs */
struct phy_package_shared *shared[PHY_MAX_ADDR];
};
#define to_mii_bus(d) container_of(d, struct mii_bus, dev)
struct mii_bus *mdiobus_alloc_size(size_t size);
/**
* mdiobus_alloc - Allocate an MDIO bus structure
*
* The internal state of the MDIO bus will be set of MDIOBUS_ALLOCATED ready
* for the driver to register the bus.
*/
static inline struct mii_bus *mdiobus_alloc(void)
{
return mdiobus_alloc_size(0);
}
int __mdiobus_register(struct mii_bus *bus, struct module *owner);
int __devm_mdiobus_register(struct device *dev, struct mii_bus *bus,
struct module *owner);
#define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE)
#define devm_mdiobus_register(dev, bus) \
__devm_mdiobus_register(dev, bus, THIS_MODULE)
void mdiobus_unregister(struct mii_bus *bus);
void mdiobus_free(struct mii_bus *bus);
struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv);
static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev)
{
return devm_mdiobus_alloc_size(dev, 0);
}
struct mii_bus *mdio_find_bus(const char *mdio_name);
struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
#define PHY_INTERRUPT_DISABLED false
#define PHY_INTERRUPT_ENABLED true
/**
* enum phy_state - PHY state machine states:
*
* @PHY_DOWN: PHY device and driver are not ready for anything. probe
* should be called if and only if the PHY is in this state,
* given that the PHY device exists.
* - PHY driver probe function will set the state to @PHY_READY
*
* @PHY_READY: PHY is ready to send and receive packets, but the
* controller is not. By default, PHYs which do not implement
* probe will be set to this state by phy_probe().
* - start will set the state to UP
*
* @PHY_UP: The PHY and attached device are ready to do work.
* Interrupts should be started here.
* - timer moves to @PHY_NOLINK or @PHY_RUNNING
*
* @PHY_NOLINK: PHY is up, but not currently plugged in.
* - irq or timer will set @PHY_RUNNING if link comes back
* - phy_stop moves to @PHY_HALTED
*
* @PHY_RUNNING: PHY is currently up, running, and possibly sending
* and/or receiving packets
* - irq or timer will set @PHY_NOLINK if link goes down
* - phy_stop moves to @PHY_HALTED
*
* @PHY_CABLETEST: PHY is performing a cable test. Packet reception/sending
* is not expected to work, carrier will be indicated as down. PHY will be
* poll once per second, or on interrupt for it current state.
* Once complete, move to UP to restart the PHY.
* - phy_stop aborts the running test and moves to @PHY_HALTED
*
* @PHY_HALTED: PHY is up, but no polling or interrupts are done. Or
* PHY is in an error state.
* - phy_start moves to @PHY_UP
*/
enum phy_state {
PHY_DOWN = 0,
PHY_READY,
PHY_HALTED,
PHY_UP,
PHY_RUNNING,
PHY_NOLINK,
PHY_CABLETEST,
};
#define MDIO_MMD_NUM 32
/**
* struct phy_c45_device_ids - 802.3-c45 Device Identifiers
* @devices_in_package: IEEE 802.3 devices in package register value.
* @mmds_present: bit vector of MMDs present.
* @device_ids: The device identifer for each present device.
*/
struct phy_c45_device_ids {
u32 devices_in_package;
u32 mmds_present;
u32 device_ids[MDIO_MMD_NUM];
};
struct macsec_context;
struct macsec_ops;
/**
* struct phy_device - An instance of a PHY
*
* @mdio: MDIO bus this PHY is on
* @drv: Pointer to the driver for this PHY instance
* @phy_id: UID for this device found during discovery
* @c45_ids: 802.3-c45 Device Identifiers if is_c45.
* @is_c45: Set to true if this PHY uses clause 45 addressing.
* @is_internal: Set to true if this PHY is internal to a MAC.
* @is_pseudo_fixed_link: Set to true if this PHY is an Ethernet switch, etc.
* @is_gigabit_capable: Set to true if PHY supports 1000Mbps
* @has_fixups: Set to true if this PHY has fixups/quirks.
* @suspended: Set to true if this PHY has been suspended successfully.
* @suspended_by_mdio_bus: Set to true if this PHY was suspended by MDIO bus.
* @sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal.
* @loopback_enabled: Set true if this PHY has been loopbacked successfully.
* @downshifted_rate: Set true if link speed has been downshifted.
* @is_on_sfp_module: Set true if PHY is located on an SFP module.
* @mac_managed_pm: Set true if MAC driver takes of suspending/resuming PHY
* @state: State of the PHY for management purposes
* @dev_flags: Device-specific flags used by the PHY driver.
*
* - Bits [15:0] are free to use by the PHY driver to communicate
* driver specific behavior.
* - Bits [23:16] are currently reserved for future use.
* - Bits [31:24] are reserved for defining generic
* PHY driver behavior.
* @irq: IRQ number of the PHY's interrupt (-1 if none)
* @phy_timer: The timer for handling the state machine
* @phylink: Pointer to phylink instance for this PHY
* @sfp_bus_attached: Flag indicating whether the SFP bus has been attached
* @sfp_bus: SFP bus attached to this PHY's fiber port
* @attached_dev: The attached enet driver's device instance ptr
* @adjust_link: Callback for the enet controller to respond to changes: in the
* link state.
* @phy_link_change: Callback for phylink for notification of link change
* @macsec_ops: MACsec offloading ops.
*
* @speed: Current link speed
* @duplex: Current duplex
* @port: Current port
* @pause: Current pause
* @asym_pause: Current asymmetric pause
* @supported: Combined MAC/PHY supported linkmodes
* @advertising: Currently advertised linkmodes
* @adv_old: Saved advertised while power saving for WoL
* @lp_advertising: Current link partner advertised linkmodes
* @eee_broken_modes: Energy efficient ethernet modes which should be prohibited
* @autoneg: Flag autoneg being used
* @link: Current link state
* @autoneg_complete: Flag auto negotiation of the link has completed
* @mdix: Current crossover
* @mdix_ctrl: User setting of crossover
* @pma_extable: Cached value of PMA/PMD Extended Abilities Register
* @interrupts: Flag interrupts have been enabled
* @interface: enum phy_interface_t value
* @skb: Netlink message for cable diagnostics
* @nest: Netlink nest used for cable diagnostics
* @ehdr: nNtlink header for cable diagnostics
* @phy_led_triggers: Array of LED triggers
* @phy_num_led_triggers: Number of triggers in @phy_led_triggers
* @led_link_trigger: LED trigger for link up/down
* @last_triggered: last LED trigger for link speed
* @master_slave_set: User requested master/slave configuration
* @master_slave_get: Current master/slave advertisement
* @master_slave_state: Current master/slave configuration
* @mii_ts: Pointer to time stamper callbacks
* @lock: Mutex for serialization access to PHY
* @state_queue: Work queue for state machine
* @shared: Pointer to private data shared by phys in one package
* @priv: Pointer to driver private data
*
* interrupts currently only supports enabled or disabled,
* but could be changed in the future to support enabling
* and disabling specific interrupts
*
* Contains some infrastructure for polling and interrupt
* handling, as well as handling shifts in PHY hardware state
*/
struct phy_device {
struct mdio_device mdio;
/* Information about the PHY type */
/* And management functions */
struct phy_driver *drv;
u32 phy_id;
struct phy_c45_device_ids c45_ids;
unsigned is_c45:1;
unsigned is_internal:1;
unsigned is_pseudo_fixed_link:1;
unsigned is_gigabit_capable:1;
unsigned has_fixups:1;
unsigned suspended:1;
unsigned suspended_by_mdio_bus:1;
unsigned sysfs_links:1;
unsigned loopback_enabled:1;
unsigned downshifted_rate:1;
unsigned is_on_sfp_module:1;
unsigned mac_managed_pm:1;
unsigned autoneg:1;
/* The most recently read link state */
unsigned link:1;
unsigned autoneg_complete:1;
/* Interrupts are enabled */
unsigned interrupts:1;
enum phy_state state;
u32 dev_flags;
phy_interface_t interface;
/*
* forced speed & duplex (no autoneg)
* partner speed & duplex & pause (autoneg)
*/
int speed;
int duplex;
int port;
int pause;
int asym_pause;
ethtool: provide UAPI for PHY master/slave configuration. This UAPI is needed for BroadR-Reach 100BASE-T1 devices. Due to lack of auto-negotiation support, we needed to be able to configure the MASTER-SLAVE role of the port manually or from an application in user space. The same UAPI can be used for 1000BASE-T or MultiGBASE-T devices to force MASTER or SLAVE role. See IEEE 802.3-2018: 22.2.4.3.7 MASTER-SLAVE control register (Register 9) 22.2.4.3.8 MASTER-SLAVE status register (Register 10) 40.5.2 MASTER-SLAVE configuration resolution 45.2.1.185.1 MASTER-SLAVE config value (1.2100.14) 45.2.7.10 MultiGBASE-T AN control 1 register (Register 7.32) The MASTER-SLAVE role affects the clock configuration: ------------------------------------------------------------------------------- When the PHY is configured as MASTER, the PMA Transmit function shall source TX_TCLK from a local clock source. When configured as SLAVE, the PMA Transmit function shall source TX_TCLK from the clock recovered from data stream provided by MASTER. iMX6Q KSZ9031 XXX ------\ /-----------\ /------------\ | | | | | MAC |<----RGMII----->| PHY Slave |<------>| PHY Master | |<--- 125 MHz ---+-<------/ | | \ | ------/ \-----------/ \------------/ ^ \-TX_TCLK ------------------------------------------------------------------------------- Since some clock or link related issues are only reproducible in a specific MASTER-SLAVE-role, MAC and PHY configuration, it is beneficial to provide generic (not 100BASE-T1 specific) interface to the user space for configuration flexibility and trouble shooting. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-05 14:35:05 +08:00
u8 master_slave_get;
u8 master_slave_set;
u8 master_slave_state;
/* Union of PHY and Attached devices' supported link modes */
/* See ethtool.h for more info */
__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
/* used with phy_speed_down */
__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old);
/* Energy efficient ethernet modes which should be prohibited */
u32 eee_broken_modes;
#ifdef CONFIG_LED_TRIGGER_PHY
struct phy_led_trigger *phy_led_triggers;
unsigned int phy_num_led_triggers;
struct phy_led_trigger *last_triggered;
struct phy_led_trigger *led_link_trigger;
#endif
/*
* Interrupt number for this PHY
* -1 means no interrupt
*/
int irq;
/* private data pointer */
/* For use by PHYs to maintain extra state */
void *priv;
/* shared data pointer */
/* For use by PHYs inside the same package that need a shared state. */
struct phy_package_shared *shared;
/* Reporting cable test results */
struct sk_buff *skb;
void *ehdr;
struct nlattr *nest;
/* Interrupt and Polling infrastructure */
struct delayed_work state_queue;
struct mutex lock;
/* This may be modified under the rtnl lock */
bool sfp_bus_attached;
struct sfp_bus *sfp_bus;
phylink: add phylink infrastructure The link between the ethernet MAC and its PHY has become more complex as the interface evolves. This is especially true with serdes links, where the part of the PHY is effectively integrated into the MAC. Serdes links can be connected to a variety of devices, including SFF modules soldered down onto the board with the MAC, a SFP cage with a hotpluggable SFP module which may contain a PHY or directly modulate the serdes signals onto optical media with or without a PHY, or even a classical PHY connection. Moreover, the negotiation information on serdes links comes in two varieties - SGMII mode, where the PHY provides its speed/duplex/flow control information to the MAC, and 1000base-X mode where both ends exchange their abilities and each resolve the link capabilities. This means we need a more flexible means to support these arrangements, particularly with the hotpluggable nature of SFP, where the PHY can be attached or detached after the network device has been brought up. Ethtool information can come from multiple sources: - we may have a PHY operating in either SGMII or 1000base-X mode, in which case we take ethtool/mii data directly from the PHY. - we may have a optical SFP module without a PHY, with the MAC operating in 1000base-X mode - the ethtool/mii data needs to come from the MAC. - we may have a copper SFP module with a PHY whic can't be accessed, which means we need to take ethtool/mii data from the MAC. Phylink aims to solve this by providing an intermediary between the MAC and PHY, providing a safe way for PHYs to be hotplugged, and allowing a SFP driver to reconfigure the serdes connection. Phylink also takes over support of fixed link connections, where the speed/duplex/flow control are fixed, but link status may be controlled by a GPIO signal. By avoiding the fixed-phy implementation, phylink can provide a faster response to link events: fixed-phy has to wait for phylib to operate its state machine, which can take several seconds. In comparison, phylink takes milliseconds. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> - remove sync status - rework supported and advertisment handling - add 1000base-x speed for fixed links - use functionality exported from phy-core, reworking __phylink_ethtool_ksettings_set for it Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-25 22:03:13 +08:00
struct phylink *phylink;
struct net_device *attached_dev;
struct mii_timestamper *mii_ts;
u8 mdix;
u8 mdix_ctrl;
int pma_extable;
void (*phy_link_change)(struct phy_device *phydev, bool up);
void (*adjust_link)(struct net_device *dev);
#if IS_ENABLED(CONFIG_MACSEC)
/* MACsec management functions */
const struct macsec_ops *macsec_ops;
#endif
};
mdio, phy: fix -Wshadow warnings triggered by nested container_of() container_of() macro hides a local variable '__mptr' inside. This becomes a problem when several container_of() are nested in each other within single line or plain macros. As C preprocessor doesn't support generating random variable names, the sole solution is to avoid defining macros that consist only of container_of() calls, or they will self-shadow '__mptr' each time: In file included from ./include/linux/bitmap.h:10, from drivers/net/phy/phy_device.c:12: drivers/net/phy/phy_device.c: In function ‘phy_device_release’: ./include/linux/kernel.h:693:8: warning: declaration of ‘__mptr’ shadows a previous local [-Wshadow] 693 | void *__mptr = (void *)(ptr); \ | ^~~~~~ ./include/linux/phy.h:647:26: note: in expansion of macro ‘container_of’ 647 | #define to_phy_device(d) container_of(to_mdio_device(d), \ | ^~~~~~~~~~~~ ./include/linux/mdio.h:52:27: note: in expansion of macro ‘container_of’ 52 | #define to_mdio_device(d) container_of(d, struct mdio_device, dev) | ^~~~~~~~~~~~ ./include/linux/phy.h:647:39: note: in expansion of macro ‘to_mdio_device’ 647 | #define to_phy_device(d) container_of(to_mdio_device(d), \ | ^~~~~~~~~~~~~~ drivers/net/phy/phy_device.c:217:8: note: in expansion of macro ‘to_phy_device’ 217 | kfree(to_phy_device(dev)); | ^~~~~~~~~~~~~ ./include/linux/kernel.h:693:8: note: shadowed declaration is here 693 | void *__mptr = (void *)(ptr); \ | ^~~~~~ ./include/linux/phy.h:647:26: note: in expansion of macro ‘container_of’ 647 | #define to_phy_device(d) container_of(to_mdio_device(d), \ | ^~~~~~~~~~~~ drivers/net/phy/phy_device.c:217:8: note: in expansion of macro ‘to_phy_device’ 217 | kfree(to_phy_device(dev)); | ^~~~~~~~~~~~~ As they are declared in header files, these warnings are highly repetitive and very annoying (along with the one from linux/pci.h). Convert the related macros from linux/{mdio,phy}.h to static inlines to avoid self-shadowing and potentially improve bug-catching. No functional changes implied. Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20210116161246.67075-1-alobakin@pm.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-17 00:13:22 +08:00
static inline struct phy_device *to_phy_device(const struct device *dev)
{
return container_of(to_mdio_device(dev), struct phy_device, mdio);
}
/**
* struct phy_tdr_config - Configuration of a TDR raw test
*
* @first: Distance for first data collection point
* @last: Distance for last data collection point
* @step: Step between data collection points
* @pair: Bitmap of cable pairs to collect data for
*
* A structure containing possible configuration parameters
* for a TDR cable test. The driver does not need to implement
* all the parameters, but should report what is actually used.
* All distances are in centimeters.
*/
struct phy_tdr_config {
u32 first;
u32 last;
u32 step;
s8 pair;
};
#define PHY_PAIR_ALL -1
/**
* struct phy_driver - Driver structure for a particular PHY type
*
* @mdiodrv: Data common to all MDIO devices
* @phy_id: The result of reading the UID registers of this PHY
* type, and ANDing them with the phy_id_mask. This driver
* only works for PHYs with IDs which match this field
* @name: The friendly name of this PHY type
* @phy_id_mask: Defines the important bits of the phy_id
* @features: A mandatory list of features (speed, duplex, etc)
* supported by this PHY
* @flags: A bitfield defining certain other features this PHY
* supports (like interrupts)
* @driver_data: Static driver data
*
* All functions are optional. If config_aneg or read_status
* are not implemented, the phy core uses the genphy versions.
* Note that none of these functions should be called from
* interrupt time. The goal is for the bus read/write functions
* to be able to block when the bus transaction is happening,
* and be freed up by an interrupt (The MPC85xx has this ability,
* though it is not currently supported in the driver).
*/
struct phy_driver {
struct mdio_driver_common mdiodrv;
u32 phy_id;
char *name;
u32 phy_id_mask;
const unsigned long * const features;
u32 flags;
const void *driver_data;
/**
* @soft_reset: Called to issue a PHY software reset
*/
int (*soft_reset)(struct phy_device *phydev);
/**
* @config_init: Called to initialize the PHY,
* including after a reset
*/
int (*config_init)(struct phy_device *phydev);
/**
* @probe: Called during discovery. Used to set
* up device-specific structures, if any
*/
int (*probe)(struct phy_device *phydev);
/**
* @get_features: Probe the hardware to determine what
* abilities it has. Should only set phydev->supported.
*/
int (*get_features)(struct phy_device *phydev);
/* PHY Power Management */
/** @suspend: Suspend the hardware, saving state if needed */
int (*suspend)(struct phy_device *phydev);
/** @resume: Resume the hardware, restoring state if needed */
int (*resume)(struct phy_device *phydev);
/**
* @config_aneg: Configures the advertisement and resets
* autonegotiation if phydev->autoneg is on,
* forces the speed to the current settings in phydev
* if phydev->autoneg is off
*/
int (*config_aneg)(struct phy_device *phydev);
/** @aneg_done: Determines the auto negotiation result */
int (*aneg_done)(struct phy_device *phydev);
/** @read_status: Determines the negotiated speed and duplex */
int (*read_status)(struct phy_device *phydev);
/**
* @config_intr: Enables or disables interrupts.
* It should also clear any pending interrupts prior to enabling the
* IRQs and after disabling them.
*/
int (*config_intr)(struct phy_device *phydev);
/** @handle_interrupt: Override default interrupt handling */
irqreturn_t (*handle_interrupt)(struct phy_device *phydev);
/** @remove: Clears up any memory if needed */
void (*remove)(struct phy_device *phydev);
/**
* @match_phy_device: Returns true if this is a suitable
* driver for the given phydev. If NULL, matching is based on
* phy_id and phy_id_mask.
*/
int (*match_phy_device)(struct phy_device *phydev);
/**
* @set_wol: Some devices (e.g. qnap TS-119P II) require PHY
* register changes to enable Wake on LAN, so set_wol is
* provided to be called in the ethernet driver's set_wol
* function.
*/
int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
/**
* @get_wol: See set_wol, but for checking whether Wake on LAN
* is enabled.
*/
void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
/**
* @link_change_notify: Called to inform a PHY device driver
* when the core is about to change the link state. This
* callback is supposed to be used as fixup hook for drivers
* that need to take action when the link state
* changes. Drivers are by no means allowed to mess with the
* PHY device structure in their implementations.
*/
void (*link_change_notify)(struct phy_device *dev);
/**
* @read_mmd: PHY specific driver override for reading a MMD
* register. This function is optional for PHY specific
* drivers. When not provided, the default MMD read function
* will be used by phy_read_mmd(), which will use either a
* direct read for Clause 45 PHYs or an indirect read for
* Clause 22 PHYs. devnum is the MMD device number within the
* PHY device, regnum is the register within the selected MMD
* device.
*/
int (*read_mmd)(struct phy_device *dev, int devnum, u16 regnum);
/**
* @write_mmd: PHY specific driver override for writing a MMD
* register. This function is optional for PHY specific
* drivers. When not provided, the default MMD write function
* will be used by phy_write_mmd(), which will use either a
* direct write for Clause 45 PHYs, or an indirect write for
* Clause 22 PHYs. devnum is the MMD device number within the
* PHY device, regnum is the register within the selected MMD
* device. val is the value to be written.
*/
int (*write_mmd)(struct phy_device *dev, int devnum, u16 regnum,
u16 val);
/** @read_page: Return the current PHY register page number */
int (*read_page)(struct phy_device *dev);
/** @write_page: Set the current PHY register page number */
int (*write_page)(struct phy_device *dev, int page);
/**
* @module_info: Get the size and type of the eeprom contained
* within a plug-in module
*/
int (*module_info)(struct phy_device *dev,
struct ethtool_modinfo *modinfo);
/**
* @module_eeprom: Get the eeprom information from the plug-in
* module
*/
int (*module_eeprom)(struct phy_device *dev,
struct ethtool_eeprom *ee, u8 *data);
/** @cable_test_start: Start a cable test */
int (*cable_test_start)(struct phy_device *dev);
/** @cable_test_tdr_start: Start a raw TDR cable test */
int (*cable_test_tdr_start)(struct phy_device *dev,
const struct phy_tdr_config *config);
/**
* @cable_test_get_status: Once per second, or on interrupt,
* request the status of the test.
*/
int (*cable_test_get_status)(struct phy_device *dev, bool *finished);
/* Get statistics from the PHY using ethtool */
/** @get_sset_count: Number of statistic counters */
int (*get_sset_count)(struct phy_device *dev);
/** @get_strings: Names of the statistic counters */
void (*get_strings)(struct phy_device *dev, u8 *data);
/** @get_stats: Return the statistic counter values */
void (*get_stats)(struct phy_device *dev,
struct ethtool_stats *stats, u64 *data);
/* Get and Set PHY tunables */
/** @get_tunable: Return the value of a tunable */
int (*get_tunable)(struct phy_device *dev,
struct ethtool_tunable *tuna, void *data);
/** @set_tunable: Set the value of a tunable */
int (*set_tunable)(struct phy_device *dev,
struct ethtool_tunable *tuna,
const void *data);
/** @set_loopback: Set the loopback mood of the PHY */
int (*set_loopback)(struct phy_device *dev, bool enable);
/** @get_sqi: Get the signal quality indication */
int (*get_sqi)(struct phy_device *dev);
/** @get_sqi_max: Get the maximum signal quality indication */
int (*get_sqi_max)(struct phy_device *dev);
};
#define to_phy_driver(d) container_of(to_mdio_common_driver(d), \
struct phy_driver, mdiodrv)
#define PHY_ANY_ID "MATCH ANY PHY"
#define PHY_ANY_UID 0xffffffff
#define PHY_ID_MATCH_EXACT(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 0)
#define PHY_ID_MATCH_MODEL(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 4)
#define PHY_ID_MATCH_VENDOR(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 10)
/* A Structure for boards to register fixups with the PHY Lib */
struct phy_fixup {
struct list_head list;
char bus_id[MII_BUS_ID_SIZE + 3];
u32 phy_uid;
u32 phy_uid_mask;
int (*run)(struct phy_device *phydev);
};
const char *phy_speed_to_str(int speed);
const char *phy_duplex_to_str(unsigned int duplex);
/* A structure for mapping a particular speed and duplex
* combination to a particular SUPPORTED and ADVERTISED value
*/
struct phy_setting {
u32 speed;
u8 duplex;
u8 bit;
};
const struct phy_setting *
phy_lookup_setting(int speed, int duplex, const unsigned long *mask,
bool exact);
size_t phy_speeds(unsigned int *speeds, size_t size,
unsigned long *mask);
void of_set_phy_supported(struct phy_device *phydev);
void of_set_phy_eee_broken(struct phy_device *phydev);
int phy_speed_down_core(struct phy_device *phydev);
/**
* phy_is_started - Convenience function to check whether PHY is started
* @phydev: The phy_device struct
*/
static inline bool phy_is_started(struct phy_device *phydev)
{
return phydev->state >= PHY_UP;
}
void phy_resolve_aneg_pause(struct phy_device *phydev);
void phy_resolve_aneg_linkmode(struct phy_device *phydev);
void phy_check_downshift(struct phy_device *phydev);
/**
* phy_read - Convenience function for reading a given PHY register
* @phydev: the phy_device struct
* @regnum: register number to read
*
* NOTE: MUST NOT be called from interrupt context,
* because the bus read/write functions may wait for an interrupt
* to conclude the operation.
*/
static inline int phy_read(struct phy_device *phydev, u32 regnum)
{
return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum);
}
#define phy_read_poll_timeout(phydev, regnum, val, cond, sleep_us, \
timeout_us, sleep_before_read) \
({ \
int __ret = read_poll_timeout(phy_read, val, (cond) || val < 0, \
sleep_us, timeout_us, sleep_before_read, phydev, regnum); \
if (val < 0) \
__ret = val; \
if (__ret) \
phydev_err(phydev, "%s failed: %d\n", __func__, __ret); \
__ret; \
})
/**
* __phy_read - convenience function for reading a given PHY register
* @phydev: the phy_device struct
* @regnum: register number to read
*
* The caller must have taken the MDIO bus lock.
*/
static inline int __phy_read(struct phy_device *phydev, u32 regnum)
{
return __mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum);
}
/**
* phy_write - Convenience function for writing a given PHY register
* @phydev: the phy_device struct
* @regnum: register number to write
* @val: value to write to @regnum
*
* NOTE: MUST NOT be called from interrupt context,
* because the bus read/write functions may wait for an interrupt
* to conclude the operation.
*/
static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val)
{
return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
}
/**
* __phy_write - Convenience function for writing a given PHY register
* @phydev: the phy_device struct
* @regnum: register number to write
* @val: value to write to @regnum
*
* The caller must have taken the MDIO bus lock.
*/
static inline int __phy_write(struct phy_device *phydev, u32 regnum, u16 val)
{
return __mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum,
val);
}
/**
* __phy_modify_changed() - Convenience function for modifying a PHY register
* @phydev: a pointer to a &struct phy_device
* @regnum: register number
* @mask: bit mask of bits to clear
* @set: bit mask of bits to set
*
* Unlocked helper function which allows a PHY register to be modified as
* new register value = (old register value & ~mask) | set
*
* Returns negative errno, 0 if there was no change, and 1 in case of change
*/
static inline int __phy_modify_changed(struct phy_device *phydev, u32 regnum,
u16 mask, u16 set)
{
return __mdiobus_modify_changed(phydev->mdio.bus, phydev->mdio.addr,
regnum, mask, set);
}
net: phy: remove kernel-doc duplication Sphinx 3 now checks for duplicated function declarations: .../Documentation/networking/kapi:143: ../include/linux/phy.h:163: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'unsigned int phy_supported_speeds (struct phy_device *phy, unsigned int *speeds, unsigned int size)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1034: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1076: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1088: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1100: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. It turns that both the C and the H files have the same kernel-doc markup for the same functions. Let's drop the at the header file, keeping the one closer to the code. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/75e9a357f9a716833d2094b04898754876365e68.1603791716.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-27 17:51:18 +08:00
/*
* phy_read_mmd - Convenience function for reading a register
* from an MMD on a given PHY.
*/
int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum);
/**
* phy_read_mmd_poll_timeout - Periodically poll a PHY register until a
* condition is met or a timeout occurs
*
* @phydev: The phy_device struct
* @devaddr: The MMD to read from
* @regnum: The register on the MMD to read
* @val: Variable to read the register into
* @cond: Break condition (usually involving @val)
* @sleep_us: Maximum time to sleep between reads in us (0
* tight-loops). Should be less than ~20ms since usleep_range
* is used (see Documentation/timers/timers-howto.rst).
* @timeout_us: Timeout in us, 0 means never timeout
* @sleep_before_read: if it is true, sleep @sleep_us before read.
* Returns 0 on success and -ETIMEDOUT upon a timeout. In either
* case, the last read value at @args is stored in @val. Must not
* be called from atomic context if sleep_us or timeout_us are used.
*/
#define phy_read_mmd_poll_timeout(phydev, devaddr, regnum, val, cond, \
sleep_us, timeout_us, sleep_before_read) \
({ \
int __ret = read_poll_timeout(phy_read_mmd, val, (cond) || val < 0, \
sleep_us, timeout_us, sleep_before_read, \
phydev, devaddr, regnum); \
if (val < 0) \
__ret = val; \
if (__ret) \
phydev_err(phydev, "%s failed: %d\n", __func__, __ret); \
__ret; \
})
net: phy: remove kernel-doc duplication Sphinx 3 now checks for duplicated function declarations: .../Documentation/networking/kapi:143: ../include/linux/phy.h:163: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'unsigned int phy_supported_speeds (struct phy_device *phy, unsigned int *speeds, unsigned int size)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1034: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1076: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1088: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1100: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. It turns that both the C and the H files have the same kernel-doc markup for the same functions. Let's drop the at the header file, keeping the one closer to the code. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/75e9a357f9a716833d2094b04898754876365e68.1603791716.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-27 17:51:18 +08:00
/*
* __phy_read_mmd - Convenience function for reading a register
* from an MMD on a given PHY.
*/
int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum);
net: phy: remove kernel-doc duplication Sphinx 3 now checks for duplicated function declarations: .../Documentation/networking/kapi:143: ../include/linux/phy.h:163: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'unsigned int phy_supported_speeds (struct phy_device *phy, unsigned int *speeds, unsigned int size)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1034: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1076: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1088: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1100: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. It turns that both the C and the H files have the same kernel-doc markup for the same functions. Let's drop the at the header file, keeping the one closer to the code. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/75e9a357f9a716833d2094b04898754876365e68.1603791716.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-27 17:51:18 +08:00
/*
* phy_write_mmd - Convenience function for writing a register
* on an MMD on a given PHY.
*/
int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
net: phy: remove kernel-doc duplication Sphinx 3 now checks for duplicated function declarations: .../Documentation/networking/kapi:143: ../include/linux/phy.h:163: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'unsigned int phy_supported_speeds (struct phy_device *phy, unsigned int *speeds, unsigned int size)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1034: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1076: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_read_mmd (struct phy_device *phydev, int devad, u32 regnum)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1088: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. .../Documentation/networking/kapi:143: ../include/linux/phy.h:1100: WARNING: Duplicate C declaration, also defined in 'networking/kapi'. Declaration is 'int __phy_write_mmd (struct phy_device *phydev, int devad, u32 regnum, u16 val)'. It turns that both the C and the H files have the same kernel-doc markup for the same functions. Let's drop the at the header file, keeping the one closer to the code. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/75e9a357f9a716833d2094b04898754876365e68.1603791716.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-27 17:51:18 +08:00
/*
* __phy_write_mmd - Convenience function for writing a register
* on an MMD on a given PHY.
*/
int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask,
u16 set);
int phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask,
u16 set);
int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
int __phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum,
u16 mask, u16 set);
int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum,
u16 mask, u16 set);
int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum,
u16 mask, u16 set);
int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum,
u16 mask, u16 set);
/**
* __phy_set_bits - Convenience function for setting bits in a PHY register
* @phydev: the phy_device struct
* @regnum: register number to write
* @val: bits to set
*
* The caller must have taken the MDIO bus lock.
*/
static inline int __phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
{
return __phy_modify(phydev, regnum, 0, val);
}
/**
* __phy_clear_bits - Convenience function for clearing bits in a PHY register
* @phydev: the phy_device struct
* @regnum: register number to write
* @val: bits to clear
*
* The caller must have taken the MDIO bus lock.
*/
static inline int __phy_clear_bits(struct phy_device *phydev, u32 regnum,
u16 val)
{
return __phy_modify(phydev, regnum, val, 0);
}
/**
* phy_set_bits - Convenience function for setting bits in a PHY register
* @phydev: the phy_device struct
* @regnum: register number to write
* @val: bits to set
*/
static inline int phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
{
return phy_modify(phydev, regnum, 0, val);
}
/**
* phy_clear_bits - Convenience function for clearing bits in a PHY register
* @phydev: the phy_device struct
* @regnum: register number to write
* @val: bits to clear
*/
static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val)
{
return phy_modify(phydev, regnum, val, 0);
}
/**
* __phy_set_bits_mmd - Convenience function for setting bits in a register
* on MMD
* @phydev: the phy_device struct
* @devad: the MMD containing register to modify
* @regnum: register number to modify
* @val: bits to set
*
* The caller must have taken the MDIO bus lock.
*/
static inline int __phy_set_bits_mmd(struct phy_device *phydev, int devad,
u32 regnum, u16 val)
{
return __phy_modify_mmd(phydev, devad, regnum, 0, val);
}
/**
* __phy_clear_bits_mmd - Convenience function for clearing bits in a register
* on MMD
* @phydev: the phy_device struct
* @devad: the MMD containing register to modify
* @regnum: register number to modify
* @val: bits to clear
*
* The caller must have taken the MDIO bus lock.
*/
static inline int __phy_clear_bits_mmd(struct phy_device *phydev, int devad,
u32 regnum, u16 val)
{
return __phy_modify_mmd(phydev, devad, regnum, val, 0);
}
/**
* phy_set_bits_mmd - Convenience function for setting bits in a register
* on MMD
* @phydev: the phy_device struct
* @devad: the MMD containing register to modify
* @regnum: register number to modify
* @val: bits to set
*/
static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad,
u32 regnum, u16 val)
{
return phy_modify_mmd(phydev, devad, regnum, 0, val);
}
/**
* phy_clear_bits_mmd - Convenience function for clearing bits in a register
* on MMD
* @phydev: the phy_device struct
* @devad: the MMD containing register to modify
* @regnum: register number to modify
* @val: bits to clear
*/
static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad,
u32 regnum, u16 val)
{
return phy_modify_mmd(phydev, devad, regnum, val, 0);
}
/**
* phy_interrupt_is_valid - Convenience function for testing a given PHY irq
* @phydev: the phy_device struct
*
* NOTE: must be kept in sync with addition/removal of PHY_POLL and
* PHY_MAC_INTERRUPT
*/
static inline bool phy_interrupt_is_valid(struct phy_device *phydev)
{
return phydev->irq != PHY_POLL && phydev->irq != PHY_MAC_INTERRUPT;
}
/**
* phy_polling_mode - Convenience function for testing whether polling is
* used to detect PHY status changes
* @phydev: the phy_device struct
*/
static inline bool phy_polling_mode(struct phy_device *phydev)
{
if (phydev->state == PHY_CABLETEST)
if (phydev->drv->flags & PHY_POLL_CABLE_TEST)
return true;
return phydev->irq == PHY_POLL;
}
/**
* phy_has_hwtstamp - Tests whether a PHY time stamp configuration.
* @phydev: the phy_device struct
*/
static inline bool phy_has_hwtstamp(struct phy_device *phydev)
{
return phydev && phydev->mii_ts && phydev->mii_ts->hwtstamp;
}
/**
* phy_has_rxtstamp - Tests whether a PHY supports receive time stamping.
* @phydev: the phy_device struct
*/
static inline bool phy_has_rxtstamp(struct phy_device *phydev)
{
return phydev && phydev->mii_ts && phydev->mii_ts->rxtstamp;
}
/**
* phy_has_tsinfo - Tests whether a PHY reports time stamping and/or
* PTP hardware clock capabilities.
* @phydev: the phy_device struct
*/
static inline bool phy_has_tsinfo(struct phy_device *phydev)
{
return phydev && phydev->mii_ts && phydev->mii_ts->ts_info;
}
/**
* phy_has_txtstamp - Tests whether a PHY supports transmit time stamping.
* @phydev: the phy_device struct
*/
static inline bool phy_has_txtstamp(struct phy_device *phydev)
{
return phydev && phydev->mii_ts && phydev->mii_ts->txtstamp;
}
static inline int phy_hwtstamp(struct phy_device *phydev, struct ifreq *ifr)
{
return phydev->mii_ts->hwtstamp(phydev->mii_ts, ifr);
}
static inline bool phy_rxtstamp(struct phy_device *phydev, struct sk_buff *skb,
int type)
{
return phydev->mii_ts->rxtstamp(phydev->mii_ts, skb, type);
}
static inline int phy_ts_info(struct phy_device *phydev,
struct ethtool_ts_info *tsinfo)
{
return phydev->mii_ts->ts_info(phydev->mii_ts, tsinfo);
}
static inline void phy_txtstamp(struct phy_device *phydev, struct sk_buff *skb,
int type)
{
phydev->mii_ts->txtstamp(phydev->mii_ts, skb, type);
}
/**
* phy_is_internal - Convenience function for testing if a PHY is internal
* @phydev: the phy_device struct
*/
static inline bool phy_is_internal(struct phy_device *phydev)
{
return phydev->is_internal;
}
/**
* phy_on_sfp - Convenience function for testing if a PHY is on an SFP module
* @phydev: the phy_device struct
*/
static inline bool phy_on_sfp(struct phy_device *phydev)
{
return phydev->is_on_sfp_module;
}
/**
* phy_interface_mode_is_rgmii - Convenience function for testing if a
* PHY interface mode is RGMII (all variants)
* @mode: the &phy_interface_t enum
*/
static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode)
{
return mode >= PHY_INTERFACE_MODE_RGMII &&
mode <= PHY_INTERFACE_MODE_RGMII_TXID;
};
/**
* phy_interface_mode_is_8023z() - does the PHY interface mode use 802.3z
* negotiation
* @mode: one of &enum phy_interface_t
*
* Returns true if the PHY interface mode uses the 16-bit negotiation
* word as defined in 802.3z. (See 802.3-2015 37.2.1 Config_Reg encoding)
*/
static inline bool phy_interface_mode_is_8023z(phy_interface_t mode)
{
return mode == PHY_INTERFACE_MODE_1000BASEX ||
mode == PHY_INTERFACE_MODE_2500BASEX;
}
/**
* phy_interface_is_rgmii - Convenience function for testing if a PHY interface
* is RGMII (all variants)
* @phydev: the phy_device struct
*/
static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
{
return phy_interface_mode_is_rgmii(phydev->interface);
};
/**
* phy_is_pseudo_fixed_link - Convenience function for testing if this
* PHY is the CPU port facing side of an Ethernet switch, or similar.
* @phydev: the phy_device struct
*/
static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev)
{
return phydev->is_pseudo_fixed_link;
}
int phy_save_page(struct phy_device *phydev);
int phy_select_page(struct phy_device *phydev, int page);
int phy_restore_page(struct phy_device *phydev, int oldpage, int ret);
int phy_read_paged(struct phy_device *phydev, int page, u32 regnum);
int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val);
int phy_modify_paged_changed(struct phy_device *phydev, int page, u32 regnum,
u16 mask, u16 set);
int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
u16 mask, u16 set);
struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id,
bool is_c45,
struct phy_c45_device_ids *c45_ids);
#if IS_ENABLED(CONFIG_PHYLIB)
int fwnode_get_phy_id(struct fwnode_handle *fwnode, u32 *phy_id);
struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode);
struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode);
struct phy_device *device_phy_find_device(struct device *dev);
struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode);
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
int phy_device_register(struct phy_device *phy);
void phy_device_free(struct phy_device *phydev);
#else
static inline int fwnode_get_phy_id(struct fwnode_handle *fwnode, u32 *phy_id)
{
return 0;
}
static inline
struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode)
{
return 0;
}
static inline
struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode)
{
return NULL;
}
static inline struct phy_device *device_phy_find_device(struct device *dev)
{
return NULL;
}
static inline
struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode)
{
return NULL;
}
static inline
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
{
return NULL;
}
static inline int phy_device_register(struct phy_device *phy)
{
return 0;
}
static inline void phy_device_free(struct phy_device *phydev) { }
#endif /* CONFIG_PHYLIB */
void phy_device_remove(struct phy_device *phydev);
int phy_get_c45_ids(struct phy_device *phydev);
int phy_init_hw(struct phy_device *phydev);
int phy_suspend(struct phy_device *phydev);
int phy_resume(struct phy_device *phydev);
int __phy_resume(struct phy_device *phydev);
int phy_loopback(struct phy_device *phydev, bool enable);
void phy_sfp_attach(void *upstream, struct sfp_bus *bus);
void phy_sfp_detach(void *upstream, struct sfp_bus *bus);
int phy_sfp_probe(struct phy_device *phydev,
const struct sfp_upstream_ops *ops);
struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
phy_interface_t interface);
struct phy_device *phy_find_first(struct mii_bus *bus);
int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
u32 flags, phy_interface_t interface);
int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
void (*handler)(struct net_device *),
phy_interface_t interface);
struct phy_device *phy_connect(struct net_device *dev, const char *bus_id,
void (*handler)(struct net_device *),
phy_interface_t interface);
void phy_disconnect(struct phy_device *phydev);
void phy_detach(struct phy_device *phydev);
void phy_start(struct phy_device *phydev);
void phy_stop(struct phy_device *phydev);
int phy_config_aneg(struct phy_device *phydev);
int phy_start_aneg(struct phy_device *phydev);
int phy_aneg_done(struct phy_device *phydev);
int phy_speed_down(struct phy_device *phydev, bool sync);
int phy_speed_up(struct phy_device *phydev);
int phy_restart_aneg(struct phy_device *phydev);
int phy_reset_after_clk_enable(struct phy_device *phydev);
#if IS_ENABLED(CONFIG_PHYLIB)
int phy_start_cable_test(struct phy_device *phydev,
struct netlink_ext_ack *extack);
int phy_start_cable_test_tdr(struct phy_device *phydev,
struct netlink_ext_ack *extack,
const struct phy_tdr_config *config);
#else
static inline
int phy_start_cable_test(struct phy_device *phydev,
struct netlink_ext_ack *extack)
{
NL_SET_ERR_MSG(extack, "Kernel not compiled with PHYLIB support");
return -EOPNOTSUPP;
}
static inline
int phy_start_cable_test_tdr(struct phy_device *phydev,
struct netlink_ext_ack *extack,
const struct phy_tdr_config *config)
{
NL_SET_ERR_MSG(extack, "Kernel not compiled with PHYLIB support");
return -EOPNOTSUPP;
}
#endif
int phy_cable_test_result(struct phy_device *phydev, u8 pair, u16 result);
int phy_cable_test_fault_length(struct phy_device *phydev, u8 pair,
u16 cm);
static inline void phy_device_reset(struct phy_device *phydev, int value)
{
mdio_device_reset(&phydev->mdio, value);
}
#define phydev_err(_phydev, format, args...) \
dev_err(&_phydev->mdio.dev, format, ##args)
#define phydev_info(_phydev, format, args...) \
dev_info(&_phydev->mdio.dev, format, ##args)
#define phydev_warn(_phydev, format, args...) \
dev_warn(&_phydev->mdio.dev, format, ##args)
#define phydev_dbg(_phydev, format, args...) \
dev_dbg(&_phydev->mdio.dev, format, ##args)
static inline const char *phydev_name(const struct phy_device *phydev)
{
return dev_name(&phydev->mdio.dev);
}
static inline void phy_lock_mdio_bus(struct phy_device *phydev)
{
mutex_lock(&phydev->mdio.bus->mdio_lock);
}
static inline void phy_unlock_mdio_bus(struct phy_device *phydev)
{
mutex_unlock(&phydev->mdio.bus->mdio_lock);
}
void phy_attached_print(struct phy_device *phydev, const char *fmt, ...)
__printf(2, 3);
char *phy_attached_info_irq(struct phy_device *phydev)
__malloc;
void phy_attached_info(struct phy_device *phydev);
/* Clause 22 PHY */
int genphy_read_abilities(struct phy_device *phydev);
int genphy_setup_forced(struct phy_device *phydev);
int genphy_restart_aneg(struct phy_device *phydev);
int genphy_check_and_restart_aneg(struct phy_device *phydev, bool restart);
int genphy_config_eee_advert(struct phy_device *phydev);
int __genphy_config_aneg(struct phy_device *phydev, bool changed);
int genphy_aneg_done(struct phy_device *phydev);
int genphy_update_link(struct phy_device *phydev);
int genphy_read_lpa(struct phy_device *phydev);
int genphy_read_status_fixed(struct phy_device *phydev);
int genphy_read_status(struct phy_device *phydev);
int genphy_read_master_slave(struct phy_device *phydev);
int genphy_suspend(struct phy_device *phydev);
int genphy_resume(struct phy_device *phydev);
int genphy_loopback(struct phy_device *phydev, bool enable);
int genphy_soft_reset(struct phy_device *phydev);
irqreturn_t genphy_handle_interrupt_no_ack(struct phy_device *phydev);
static inline int genphy_config_aneg(struct phy_device *phydev)
{
return __genphy_config_aneg(phydev, false);
}
static inline int genphy_no_config_intr(struct phy_device *phydev)
{
return 0;
}
int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad,
u16 regnum);
int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum,
u16 regnum, u16 val);
/* Clause 37 */
int genphy_c37_config_aneg(struct phy_device *phydev);
int genphy_c37_read_status(struct phy_device *phydev);
/* Clause 45 PHY */
int genphy_c45_restart_aneg(struct phy_device *phydev);
int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart);
int genphy_c45_aneg_done(struct phy_device *phydev);
int genphy_c45_read_link(struct phy_device *phydev);
int genphy_c45_read_lpa(struct phy_device *phydev);
int genphy_c45_read_pma(struct phy_device *phydev);
int genphy_c45_pma_setup_forced(struct phy_device *phydev);
int genphy_c45_pma_baset1_setup_master_slave(struct phy_device *phydev);
int genphy_c45_an_config_aneg(struct phy_device *phydev);
int genphy_c45_an_disable_aneg(struct phy_device *phydev);
int genphy_c45_read_mdix(struct phy_device *phydev);
int genphy_c45_pma_read_abilities(struct phy_device *phydev);
int genphy_c45_pma_baset1_read_master_slave(struct phy_device *phydev);
int genphy_c45_read_status(struct phy_device *phydev);
int genphy_c45_config_aneg(struct phy_device *phydev);
int genphy_c45_loopback(struct phy_device *phydev, bool enable);
int genphy_c45_pma_resume(struct phy_device *phydev);
int genphy_c45_pma_suspend(struct phy_device *phydev);
int genphy_c45_fast_retrain(struct phy_device *phydev, bool enable);
/* Generic C45 PHY driver */
extern struct phy_driver genphy_c45_driver;
/* The gen10g_* functions are the old Clause 45 stub */
int gen10g_config_aneg(struct phy_device *phydev);
static inline int phy_read_status(struct phy_device *phydev)
{
if (!phydev->drv)
return -EIO;
if (phydev->drv->read_status)
return phydev->drv->read_status(phydev);
else
return genphy_read_status(phydev);
}
void phy_driver_unregister(struct phy_driver *drv);
void phy_drivers_unregister(struct phy_driver *drv, int n);
int phy_driver_register(struct phy_driver *new_driver, struct module *owner);
int phy_drivers_register(struct phy_driver *new_driver, int n,
struct module *owner);
2020-11-01 20:50:56 +08:00
void phy_error(struct phy_device *phydev);
void phy_state_machine(struct work_struct *work);
void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies);
2020-11-01 20:50:56 +08:00
void phy_trigger_machine(struct phy_device *phydev);
void phy_mac_interrupt(struct phy_device *phydev);
void phy_start_machine(struct phy_device *phydev);
void phy_stop_machine(struct phy_device *phydev);
void phy_ethtool_ksettings_get(struct phy_device *phydev,
struct ethtool_link_ksettings *cmd);
int phy_ethtool_ksettings_set(struct phy_device *phydev,
const struct ethtool_link_ksettings *cmd);
int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd);
int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd);
int phy_disable_interrupts(struct phy_device *phydev);
void phy_request_interrupt(struct phy_device *phydev);
void phy_free_interrupt(struct phy_device *phydev);
void phy_print_status(struct phy_device *phydev);
void phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode);
void phy_advertise_supported(struct phy_device *phydev);
void phy_support_sym_pause(struct phy_device *phydev);
void phy_support_asym_pause(struct phy_device *phydev);
void phy_set_sym_pause(struct phy_device *phydev, bool rx, bool tx,
bool autoneg);
void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx);
bool phy_validate_pause(struct phy_device *phydev,
struct ethtool_pauseparam *pp);
void phy_get_pause(struct phy_device *phydev, bool *tx_pause, bool *rx_pause);
s32 phy_get_internal_delay(struct phy_device *phydev, struct device *dev,
const int *delay_values, int size, bool is_rx);
void phy_resolve_pause(unsigned long *local_adv, unsigned long *partner_adv,
bool *tx_pause, bool *rx_pause);
int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
int (*run)(struct phy_device *));
int phy_register_fixup_for_id(const char *bus_id,
int (*run)(struct phy_device *));
int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
int (*run)(struct phy_device *));
int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask);
int phy_unregister_fixup_for_id(const char *bus_id);
int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask);
phy: add the EEE support and the way to access to the MMD registers. This patch adds the support for the Energy-Efficient Ethernet (EEE) to the Physical Abstraction Layer. To support the EEE we have to access to the MMD registers 3.20 and 7.60/61. So two new functions have been added to read/write the MMD registers (clause 45). An Ethernet driver (I tested the stmmac) can invoke the phy_init_eee to properly check if the EEE is supported by the PHYs and it can also set the clock stop enable bit in the 3.0 register. The phy_get_eee_err can be used for reporting the number of time where the PHY failed to complete its normal wake sequence. In the end, this patch also adds the EEE ethtool support implementing: o phy_ethtool_set_eee o phy_ethtool_get_eee v1: initial patch v2: fixed some errors especially on naming convention v3: renamed again the mmd read/write functions thank to Ben's feedback v4: moved file to phy.c and added the ethtool support. v5: fixed phy_adv_to_eee, phy_eee_to_supported, phy_eee_to_adv return values according to ethtool API (thanks to Ben's feedback). Renamed some macros to avoid too long names. v6: fixed kernel-doc comments to be properly parsed. Fixed the phy_init_eee function: we need to check which link mode was autonegotiated and then the corresponding bits in 7.60 and 7.61 registers. v7: reviewed the way to get the negotiated settings. v8: fixed a problem in the phy_init_eee return value erroneously added when included the phy_read_status call. v9: do not remove the MDIO_AN_EEE_ADV_100TX and MDIO_AN_EEE_ADV_1000T and fixed the eee_{cap,lp,adv} declaration as "int" instead of u16. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-28 05:14:38 +08:00
int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable);
int phy_get_eee_err(struct phy_device *phydev);
int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data);
int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data);
int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
void phy_ethtool_get_wol(struct phy_device *phydev,
struct ethtool_wolinfo *wol);
int phy_ethtool_get_link_ksettings(struct net_device *ndev,
struct ethtool_link_ksettings *cmd);
int phy_ethtool_set_link_ksettings(struct net_device *ndev,
const struct ethtool_link_ksettings *cmd);
int phy_ethtool_nway_reset(struct net_device *ndev);
int phy_package_join(struct phy_device *phydev, int addr, size_t priv_size);
void phy_package_leave(struct phy_device *phydev);
int devm_phy_package_join(struct device *dev, struct phy_device *phydev,
int addr, size_t priv_size);
phy: add the EEE support and the way to access to the MMD registers. This patch adds the support for the Energy-Efficient Ethernet (EEE) to the Physical Abstraction Layer. To support the EEE we have to access to the MMD registers 3.20 and 7.60/61. So two new functions have been added to read/write the MMD registers (clause 45). An Ethernet driver (I tested the stmmac) can invoke the phy_init_eee to properly check if the EEE is supported by the PHYs and it can also set the clock stop enable bit in the 3.0 register. The phy_get_eee_err can be used for reporting the number of time where the PHY failed to complete its normal wake sequence. In the end, this patch also adds the EEE ethtool support implementing: o phy_ethtool_set_eee o phy_ethtool_get_eee v1: initial patch v2: fixed some errors especially on naming convention v3: renamed again the mmd read/write functions thank to Ben's feedback v4: moved file to phy.c and added the ethtool support. v5: fixed phy_adv_to_eee, phy_eee_to_supported, phy_eee_to_adv return values according to ethtool API (thanks to Ben's feedback). Renamed some macros to avoid too long names. v6: fixed kernel-doc comments to be properly parsed. Fixed the phy_init_eee function: we need to check which link mode was autonegotiated and then the corresponding bits in 7.60 and 7.61 registers. v7: reviewed the way to get the negotiated settings. v8: fixed a problem in the phy_init_eee return value erroneously added when included the phy_read_status call. v9: do not remove the MDIO_AN_EEE_ADV_100TX and MDIO_AN_EEE_ADV_1000T and fixed the eee_{cap,lp,adv} declaration as "int" instead of u16. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-28 05:14:38 +08:00
#if IS_ENABLED(CONFIG_PHYLIB)
int __init mdio_bus_init(void);
void mdio_bus_exit(void);
#endif
int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data);
int phy_ethtool_get_sset_count(struct phy_device *phydev);
int phy_ethtool_get_stats(struct phy_device *phydev,
struct ethtool_stats *stats, u64 *data);
static inline int phy_package_read(struct phy_device *phydev, u32 regnum)
{
struct phy_package_shared *shared = phydev->shared;
if (!shared)
return -EIO;
return mdiobus_read(phydev->mdio.bus, shared->addr, regnum);
}
static inline int __phy_package_read(struct phy_device *phydev, u32 regnum)
{
struct phy_package_shared *shared = phydev->shared;
if (!shared)
return -EIO;
return __mdiobus_read(phydev->mdio.bus, shared->addr, regnum);
}
static inline int phy_package_write(struct phy_device *phydev,
u32 regnum, u16 val)
{
struct phy_package_shared *shared = phydev->shared;
if (!shared)
return -EIO;
return mdiobus_write(phydev->mdio.bus, shared->addr, regnum, val);
}
static inline int __phy_package_write(struct phy_device *phydev,
u32 regnum, u16 val)
{
struct phy_package_shared *shared = phydev->shared;
if (!shared)
return -EIO;
return __mdiobus_write(phydev->mdio.bus, shared->addr, regnum, val);
}
static inline bool __phy_package_set_once(struct phy_device *phydev,
unsigned int b)
{
struct phy_package_shared *shared = phydev->shared;
if (!shared)
return false;
return !test_and_set_bit(b, &shared->flags);
}
static inline bool phy_package_init_once(struct phy_device *phydev)
{
return __phy_package_set_once(phydev, PHY_SHARED_F_INIT_DONE);
}
static inline bool phy_package_probe_once(struct phy_device *phydev)
{
return __phy_package_set_once(phydev, PHY_SHARED_F_PROBE_DONE);
}
extern struct bus_type mdio_bus_type;
struct mdio_board_info {
const char *bus_id;
char modalias[MDIO_NAME_SIZE];
int mdio_addr;
const void *platform_data;
};
#if IS_ENABLED(CONFIG_MDIO_DEVICE)
int mdiobus_register_board_info(const struct mdio_board_info *info,
unsigned int n);
#else
static inline int mdiobus_register_board_info(const struct mdio_board_info *i,
unsigned int n)
{
return 0;
}
#endif
/**
* phy_module_driver() - Helper macro for registering PHY drivers
* @__phy_drivers: array of PHY drivers to register
* @__count: Numbers of members in array
*
* Helper macro for PHY drivers which do not do anything special in module
* init/exit. Each module may only use this macro once, and calling it
* replaces module_init() and module_exit().
*/
#define phy_module_driver(__phy_drivers, __count) \
static int __init phy_module_init(void) \
{ \
return phy_drivers_register(__phy_drivers, __count, THIS_MODULE); \
} \
module_init(phy_module_init); \
static void __exit phy_module_exit(void) \
{ \
phy_drivers_unregister(__phy_drivers, __count); \
} \
module_exit(phy_module_exit)
#define module_phy_driver(__phy_drivers) \
phy_module_driver(__phy_drivers, ARRAY_SIZE(__phy_drivers))
bool phy_driver_is_genphy(struct phy_device *phydev);
bool phy_driver_is_genphy_10g(struct phy_device *phydev);
#endif /* __PHY_H */