diff options
| -rw-r--r-- | hw/net/e1000e_core.c | 153 | ||||
| -rw-r--r-- | hw/net/e1000e_core.h | 2 | ||||
| -rw-r--r-- | hw/net/trace-events | 2 |
3 files changed, 69 insertions, 88 deletions
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c index d601386992..9f185d099c 100644 --- a/hw/net/e1000e_core.c +++ b/hw/net/e1000e_core.c @@ -165,14 +165,14 @@ e1000e_intrmgr_on_throttling_timer(void *opaque) timer->running = false; - if (msi_enabled(timer->core->owner)) { - trace_e1000e_irq_msi_notify_postponed(); - /* Clear msi_causes_pending to fire MSI eventually */ - timer->core->msi_causes_pending = 0; - e1000e_set_interrupt_cause(timer->core, 0); - } else { - trace_e1000e_irq_legacy_notify_postponed(); - e1000e_set_interrupt_cause(timer->core, 0); + if (timer->core->mac[IMS] & timer->core->mac[ICR]) { + if (msi_enabled(timer->core->owner)) { + trace_e1000e_irq_msi_notify_postponed(); + msi_notify(timer->core->owner, 0); + } else { + trace_e1000e_irq_legacy_notify_postponed(); + e1000e_raise_legacy_irq(timer->core); + } } } @@ -366,10 +366,6 @@ static void e1000e_intrmgr_fire_all_timers(E1000ECore *core) { int i; - uint32_t val = e1000e_intmgr_collect_delayed_causes(core); - - trace_e1000e_irq_adding_delayed_causes(val, core->mac[ICR]); - core->mac[ICR] |= val; if (core->itr.running) { timer_del(core->itr.timer); @@ -1974,13 +1970,6 @@ void(*e1000e_phyreg_writeops[E1000E_PHY_PAGES][E1000E_PHY_PAGE_SIZE]) } }; -static inline void -e1000e_clear_ims_bits(E1000ECore *core, uint32_t bits) -{ - trace_e1000e_irq_clear_ims(bits, core->mac[IMS], core->mac[IMS] & ~bits); - core->mac[IMS] &= ~bits; -} - static inline bool e1000e_postpone_interrupt(E1000IntrDelayTimer *timer) { @@ -2038,7 +2027,6 @@ e1000e_msix_notify_one(E1000ECore *core, uint32_t cause, uint32_t int_cfg) effective_eiac = core->mac[EIAC] & cause; core->mac[ICR] &= ~effective_eiac; - core->msi_causes_pending &= ~effective_eiac; if (!(core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) { core->mac[IMS] &= ~effective_eiac; @@ -2130,33 +2118,17 @@ e1000e_fix_icr_asserted(E1000ECore *core) trace_e1000e_irq_fix_icr_asserted(core->mac[ICR]); } -static void -e1000e_send_msi(E1000ECore *core, bool msix) +static void e1000e_raise_interrupts(E1000ECore *core, + size_t index, uint32_t causes) { - uint32_t causes = core->mac[ICR] & core->mac[IMS] & ~E1000_ICR_ASSERTED; - - core->msi_causes_pending &= causes; - causes ^= core->msi_causes_pending; - if (causes == 0) { - return; - } - core->msi_causes_pending |= causes; + bool is_msix = msix_enabled(core->owner); + uint32_t old_causes = core->mac[IMS] & core->mac[ICR]; + uint32_t raised_causes; - if (msix) { - e1000e_msix_notify(core, causes); - } else { - if (!e1000e_itr_should_postpone(core)) { - trace_e1000e_irq_msi_notify(causes); - msi_notify(core->owner, 0); - } - } -} + trace_e1000e_irq_set(index << 2, + core->mac[index], core->mac[index] | causes); -static void -e1000e_update_interrupt_state(E1000ECore *core) -{ - bool interrupts_pending; - bool is_msix = msix_enabled(core->owner); + core->mac[index] |= causes; /* Set ICR[OTHER] for MSI-X */ if (is_msix) { @@ -2178,40 +2150,58 @@ e1000e_update_interrupt_state(E1000ECore *core) */ core->mac[ICS] = core->mac[ICR]; - interrupts_pending = (core->mac[IMS] & core->mac[ICR]) ? true : false; - if (!interrupts_pending) { - core->msi_causes_pending = 0; - } - trace_e1000e_irq_pending_interrupts(core->mac[ICR] & core->mac[IMS], core->mac[ICR], core->mac[IMS]); - if (is_msix || msi_enabled(core->owner)) { - if (interrupts_pending) { - e1000e_send_msi(core, is_msix); - } - } else { - if (interrupts_pending) { - if (!e1000e_itr_should_postpone(core)) { - e1000e_raise_legacy_irq(core); - } + raised_causes = core->mac[IMS] & core->mac[ICR] & ~old_causes; + if (!raised_causes) { + return; + } + + if (is_msix) { + e1000e_msix_notify(core, raised_causes & ~E1000_ICR_ASSERTED); + } else if (!e1000e_itr_should_postpone(core)) { + if (msi_enabled(core->owner)) { + trace_e1000e_irq_msi_notify(raised_causes); + msi_notify(core->owner, 0); } else { - e1000e_lower_legacy_irq(core); + e1000e_raise_legacy_irq(core); } } } -static void -e1000e_set_interrupt_cause(E1000ECore *core, uint32_t val) +static void e1000e_lower_interrupts(E1000ECore *core, + size_t index, uint32_t causes) { - trace_e1000e_irq_set_cause_entry(val, core->mac[ICR]); + trace_e1000e_irq_clear(index << 2, + core->mac[index], core->mac[index] & ~causes); - val |= e1000e_intmgr_collect_delayed_causes(core); - core->mac[ICR] |= val; + core->mac[index] &= ~causes; - trace_e1000e_irq_set_cause_exit(val, core->mac[ICR]); + /* + * Make sure ICR and ICS registers have the same value. + * The spec says that the ICS register is write-only. However in practice, + * on real hardware ICS is readable, and for reads it has the same value as + * ICR (except that ICS does not have the clear on read behaviour of ICR). + * + * The VxWorks PRO/1000 driver uses this behaviour. + */ + core->mac[ICS] = core->mac[ICR]; + + trace_e1000e_irq_pending_interrupts(core->mac[ICR] & core->mac[IMS], + core->mac[ICR], core->mac[IMS]); - e1000e_update_interrupt_state(core); + if (!(core->mac[IMS] & core->mac[ICR]) && + !msix_enabled(core->owner) && !msi_enabled(core->owner)) { + e1000e_lower_legacy_irq(core); + } +} + +static void +e1000e_set_interrupt_cause(E1000ECore *core, uint32_t val) +{ + val |= e1000e_intmgr_collect_delayed_causes(core); + e1000e_raise_interrupts(core, ICR, val); } static inline void @@ -2477,30 +2467,27 @@ e1000e_set_ics(E1000ECore *core, int index, uint32_t val) static void e1000e_set_icr(E1000ECore *core, int index, uint32_t val) { - uint32_t icr = 0; if ((core->mac[ICR] & E1000_ICR_ASSERTED) && (core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) { trace_e1000e_irq_icr_process_iame(); - e1000e_clear_ims_bits(core, core->mac[IAM]); + e1000e_lower_interrupts(core, IMS, core->mac[IAM]); } - icr = core->mac[ICR] & ~val; /* * Windows driver expects that the "receive overrun" bit and other * ones to be cleared when the "Other" bit (#24) is cleared. */ - icr = (val & E1000_ICR_OTHER) ? (icr & ~E1000_ICR_OTHER_CAUSES) : icr; - trace_e1000e_irq_icr_write(val, core->mac[ICR], icr); - core->mac[ICR] = icr; - e1000e_update_interrupt_state(core); + if (val & E1000_ICR_OTHER) { + val |= E1000_ICR_OTHER_CAUSES; + } + e1000e_lower_interrupts(core, ICR, val); } static void e1000e_set_imc(E1000ECore *core, int index, uint32_t val) { trace_e1000e_irq_ims_clear_set_imc(val); - e1000e_clear_ims_bits(core, val); - e1000e_update_interrupt_state(core); + e1000e_lower_interrupts(core, IMS, val); } static void @@ -2521,9 +2508,6 @@ e1000e_set_ims(E1000ECore *core, int index, uint32_t val) uint32_t valid_val = val & ims_valid_mask; - trace_e1000e_irq_set_ims(val, core->mac[IMS], core->mac[IMS] | valid_val); - core->mac[IMS] |= valid_val; - if ((valid_val & ims_ext_mask) && (core->mac[CTRL_EXT] & E1000_CTRL_EXT_PBA_CLR) && msix_enabled(core->owner)) { @@ -2536,7 +2520,7 @@ e1000e_set_ims(E1000ECore *core, int index, uint32_t val) e1000e_intrmgr_fire_all_timers(core); } - e1000e_update_interrupt_state(core); + e1000e_raise_interrupts(core, IMS, valid_val); } static void @@ -2609,28 +2593,25 @@ static uint32_t e1000e_mac_icr_read(E1000ECore *core, int index) { uint32_t ret = core->mac[ICR]; - trace_e1000e_irq_icr_read_entry(ret); if (core->mac[IMS] == 0) { trace_e1000e_irq_icr_clear_zero_ims(); - core->mac[ICR] = 0; + e1000e_lower_interrupts(core, ICR, 0xffffffff); } if (!msix_enabled(core->owner)) { trace_e1000e_irq_icr_clear_nonmsix_icr_read(); - core->mac[ICR] = 0; + e1000e_lower_interrupts(core, ICR, 0xffffffff); } if ((core->mac[ICR] & E1000_ICR_ASSERTED) && (core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) { trace_e1000e_irq_icr_clear_iame(); - core->mac[ICR] = 0; + e1000e_lower_interrupts(core, ICR, 0xffffffff); trace_e1000e_irq_icr_process_iame(); - e1000e_clear_ims_bits(core, core->mac[IAM]); + e1000e_lower_interrupts(core, IMS, core->mac[IAM]); } - trace_e1000e_irq_icr_read_exit(core->mac[ICR]); - e1000e_update_interrupt_state(core); return ret; } diff --git a/hw/net/e1000e_core.h b/hw/net/e1000e_core.h index 213a70530d..66b025cc43 100644 --- a/hw/net/e1000e_core.h +++ b/hw/net/e1000e_core.h @@ -111,8 +111,6 @@ struct E1000Core { PCIDevice *owner; void (*owner_start_recv)(PCIDevice *d); - uint32_t msi_causes_pending; - int64_t timadj; }; diff --git a/hw/net/trace-events b/hw/net/trace-events index 64d776bc2a..d171dc8179 100644 --- a/hw/net/trace-events +++ b/hw/net/trace-events @@ -205,6 +205,8 @@ e1000e_irq_msix_notify_postponed_vec(int idx) "Sending MSI-X postponed by EITR[% e1000e_irq_legacy_notify(bool level) "IRQ line state: %d" e1000e_irq_msix_notify_vec(uint32_t vector) "MSI-X notify vector 0x%x" e1000e_irq_postponed_by_xitr(uint32_t reg) "Interrupt postponed by [E]ITR register 0x%x" +e1000e_irq_clear(uint32_t offset, uint32_t old, uint32_t new) "Clearing interrupt register 0x%x: 0x%x --> 0x%x" +e1000e_irq_set(uint32_t offset, uint32_t old, uint32_t new) "Setting interrupt register 0x%x: 0x%x --> 0x%x" e1000e_irq_clear_ims(uint32_t bits, uint32_t old_ims, uint32_t new_ims) "Clearing IMS bits 0x%x: 0x%x --> 0x%x" e1000e_irq_set_ims(uint32_t bits, uint32_t old_ims, uint32_t new_ims) "Setting IMS bits 0x%x: 0x%x --> 0x%x" e1000e_irq_fix_icr_asserted(uint32_t new_val) "ICR_ASSERTED bit fixed: 0x%x" |