Browse Source
A very similar implementation of the same device exists in imx_fec. Prepare for a common implementation by extracting a device model into its own files. Some migration state has been moved into the new device model which breaks migration compatibility for the following machines: * smdkc210 * realview-* * vexpress-* * kzm * mps2-* While breaking migration ABI, fix the size of the MII registers to be 16 bit, as defined by IEEE 802.3u. Signed-off-by: Bernhard Beschow <shentey@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241102125724.532843-2-shentey@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>pull/318/head
Bernhard Beschow
2 years ago
committed by
Peter Maydell
Peter Maydell
5 changed files with 233 additions and 115 deletions
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/*
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* SMSC LAN9118 PHY emulation |
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* |
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* Copyright (c) 2009 CodeSourcery, LLC. |
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* Written by Paul Brook |
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* |
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* This code is licensed under the GNU GPL v2 |
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* |
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* Contributions after 2012-01-13 are licensed under the terms of the |
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* GNU GPL, version 2 or (at your option) any later version. |
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*/ |
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#include "qemu/osdep.h" |
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#include "hw/net/lan9118_phy.h" |
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#include "hw/irq.h" |
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#include "hw/resettable.h" |
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#include "migration/vmstate.h" |
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#include "qemu/log.h" |
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#define PHY_INT_ENERGYON (1 << 7) |
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#define PHY_INT_AUTONEG_COMPLETE (1 << 6) |
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#define PHY_INT_FAULT (1 << 5) |
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#define PHY_INT_DOWN (1 << 4) |
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#define PHY_INT_AUTONEG_LP (1 << 3) |
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#define PHY_INT_PARFAULT (1 << 2) |
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#define PHY_INT_AUTONEG_PAGE (1 << 1) |
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static void lan9118_phy_update_irq(Lan9118PhyState *s) |
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{ |
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qemu_set_irq(s->irq, !!(s->ints & s->int_mask)); |
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} |
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uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg) |
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{ |
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uint16_t val; |
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switch (reg) { |
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case 0: /* Basic Control */ |
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return s->control; |
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case 1: /* Basic Status */ |
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return s->status; |
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case 2: /* ID1 */ |
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return 0x0007; |
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case 3: /* ID2 */ |
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return 0xc0d1; |
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case 4: /* Auto-neg advertisement */ |
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return s->advertise; |
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case 5: /* Auto-neg Link Partner Ability */ |
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return 0x0f71; |
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case 6: /* Auto-neg Expansion */ |
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return 1; |
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/* TODO 17, 18, 27, 29, 30, 31 */ |
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case 29: /* Interrupt source. */ |
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val = s->ints; |
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s->ints = 0; |
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lan9118_phy_update_irq(s); |
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return val; |
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case 30: /* Interrupt mask */ |
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return s->int_mask; |
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default: |
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qemu_log_mask(LOG_GUEST_ERROR, |
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"lan9118_phy_read: PHY read reg %d\n", reg); |
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return 0; |
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} |
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} |
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void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val) |
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{ |
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switch (reg) { |
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case 0: /* Basic Control */ |
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if (val & 0x8000) { |
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lan9118_phy_reset(s); |
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break; |
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} |
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s->control = val & 0x7980; |
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/* Complete autonegotiation immediately. */ |
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if (val & 0x1000) { |
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s->status |= 0x0020; |
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} |
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break; |
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case 4: /* Auto-neg advertisement */ |
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s->advertise = (val & 0x2d7f) | 0x80; |
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break; |
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/* TODO 17, 18, 27, 31 */ |
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case 30: /* Interrupt mask */ |
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s->int_mask = val & 0xff; |
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lan9118_phy_update_irq(s); |
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break; |
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default: |
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qemu_log_mask(LOG_GUEST_ERROR, |
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"lan9118_phy_write: PHY write reg %d = 0x%04x\n", reg, val); |
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} |
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} |
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void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down) |
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{ |
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s->link_down = link_down; |
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/* Autonegotiation status mirrors link status. */ |
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if (link_down) { |
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s->status &= ~0x0024; |
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s->ints |= PHY_INT_DOWN; |
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} else { |
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s->status |= 0x0024; |
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s->ints |= PHY_INT_ENERGYON; |
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s->ints |= PHY_INT_AUTONEG_COMPLETE; |
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} |
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lan9118_phy_update_irq(s); |
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} |
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void lan9118_phy_reset(Lan9118PhyState *s) |
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{ |
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s->control = 0x3000; |
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s->status = 0x7809; |
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s->advertise = 0x01e1; |
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s->int_mask = 0; |
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s->ints = 0; |
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lan9118_phy_update_link(s, s->link_down); |
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} |
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static void lan9118_phy_reset_hold(Object *obj, ResetType type) |
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{ |
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Lan9118PhyState *s = LAN9118_PHY(obj); |
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lan9118_phy_reset(s); |
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} |
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static void lan9118_phy_init(Object *obj) |
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{ |
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Lan9118PhyState *s = LAN9118_PHY(obj); |
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qdev_init_gpio_out(DEVICE(s), &s->irq, 1); |
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} |
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static const VMStateDescription vmstate_lan9118_phy = { |
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.name = "lan9118-phy", |
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.version_id = 1, |
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.minimum_version_id = 1, |
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.fields = (const VMStateField[]) { |
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VMSTATE_UINT16(control, Lan9118PhyState), |
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VMSTATE_UINT16(status, Lan9118PhyState), |
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VMSTATE_UINT16(advertise, Lan9118PhyState), |
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VMSTATE_UINT16(ints, Lan9118PhyState), |
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VMSTATE_UINT16(int_mask, Lan9118PhyState), |
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VMSTATE_BOOL(link_down, Lan9118PhyState), |
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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static void lan9118_phy_class_init(ObjectClass *klass, void *data) |
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{ |
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ResettableClass *rc = RESETTABLE_CLASS(klass); |
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DeviceClass *dc = DEVICE_CLASS(klass); |
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rc->phases.hold = lan9118_phy_reset_hold; |
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dc->vmsd = &vmstate_lan9118_phy; |
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} |
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static const TypeInfo types[] = { |
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{ |
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.name = TYPE_LAN9118_PHY, |
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.parent = TYPE_SYS_BUS_DEVICE, |
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.instance_size = sizeof(Lan9118PhyState), |
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.instance_init = lan9118_phy_init, |
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.class_init = lan9118_phy_class_init, |
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} |
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}; |
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DEFINE_TYPES(types) |
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@ -0,0 +1,37 @@ |
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/*
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* SMSC LAN9118 PHY emulation |
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* |
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* Copyright (c) 2009 CodeSourcery, LLC. |
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* Written by Paul Brook |
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* |
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* This work is licensed under the terms of the GNU GPL, version 2 or later. |
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* See the COPYING file in the top-level directory. |
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*/ |
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#ifndef HW_NET_LAN9118_PHY_H |
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#define HW_NET_LAN9118_PHY_H |
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#include "qom/object.h" |
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#include "hw/sysbus.h" |
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#define TYPE_LAN9118_PHY "lan9118-phy" |
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OBJECT_DECLARE_SIMPLE_TYPE(Lan9118PhyState, LAN9118_PHY) |
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typedef struct Lan9118PhyState { |
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SysBusDevice parent_obj; |
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uint16_t status; |
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uint16_t control; |
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uint16_t advertise; |
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uint16_t ints; |
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uint16_t int_mask; |
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qemu_irq irq; |
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bool link_down; |
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} Lan9118PhyState; |
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void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down); |
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void lan9118_phy_reset(Lan9118PhyState *s); |
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uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg); |
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void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val); |
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#endif |
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