/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * apic_introp.c: * Has code for Advanced DDI interrupt framework support. */ #include #include #include "apic.h" #include #include #include #include #include #include #include extern struct av_head autovect[]; /* * Local Function Prototypes */ int apic_pci_msi_enable_vector(dev_info_t *, int, int, int, int, int); apic_irq_t *apic_find_irq(dev_info_t *, struct intrspec *, int); static int apic_get_pending(apic_irq_t *, int); static void apic_clear_mask(apic_irq_t *); static void apic_set_mask(apic_irq_t *); static uchar_t apic_find_multi_vectors(int, int); int apic_navail_vector(dev_info_t *, int); int apic_alloc_vectors(dev_info_t *, int, int, int, int, int); void apic_free_vectors(dev_info_t *, int, int, int, int); int apic_intr_ops(dev_info_t *, ddi_intr_handle_impl_t *, psm_intr_op_t, int *); extern int intr_clear(void); extern void intr_restore(uint_t); /* * MSI support flag: * reflects whether MSI is supported at APIC level * it can also be patched through /etc/system * * 0 = default value - don't know and need to call apic_check_msi_support() * to find out then set it accordingly * 1 = supported * -1 = not supported */ int apic_support_msi = 0; /* Multiple vector support for MSI */ int apic_multi_msi_enable = 1; int apic_multi_msi_max = 2; extern uchar_t apic_ipltopri[MAXIPL+1]; extern uchar_t apic_vector_to_irq[APIC_MAX_VECTOR+1]; extern int apic_max_device_irq; extern int apic_min_device_irq; extern apic_irq_t *apic_irq_table[APIC_MAX_VECTOR+1]; extern volatile uint32_t *apicadr; /* virtual addr of local APIC */ extern volatile int32_t *apicioadr[MAX_IO_APIC]; extern lock_t apic_ioapic_lock; extern kmutex_t airq_mutex; extern apic_cpus_info_t *apic_cpus; extern int apic_first_avail_irq; /* * apic_pci_msi_enable_vector: * Set the address/data fields in the MSI/X capability structure * XXX: MSI-X support */ /* ARGSUSED */ int apic_pci_msi_enable_vector(dev_info_t *dip, int type, int inum, int vector, int count, int target_apic_id) { uint64_t msi_addr, msi_data; ushort_t msi_ctrl; int cap_ptr = i_ddi_get_msi_msix_cap_ptr(dip); ddi_acc_handle_t handle = i_ddi_get_pci_config_handle(dip); DDI_INTR_IMPLDBG((CE_CONT, "apic_pci_msi_enable_vector: dip=0x%p\n" "\tdriver = %s, inum=0x%x vector=0x%x apicid=0x%x\n", (void *)dip, ddi_driver_name(dip), inum, vector, target_apic_id)); if (handle == NULL) return (PSM_FAILURE); /* MSI Address */ msi_addr = (MSI_ADDR_HDR | (target_apic_id << MSI_ADDR_DEST_SHIFT)); msi_addr |= ((MSI_ADDR_RH_FIXED << MSI_ADDR_RH_SHIFT) | (MSI_ADDR_DM_PHYSICAL << MSI_ADDR_DM_SHIFT)); /* MSI Data: MSI is edge triggered according to spec */ msi_data = ((MSI_DATA_TM_EDGE << MSI_DATA_TM_SHIFT) | vector); DDI_INTR_IMPLDBG((CE_CONT, "apic_pci_msi_enable_vector: addr=0x%lx " "data=0x%lx\n", (long)msi_addr, (long)msi_data)); if (type == DDI_INTR_TYPE_MSI) { msi_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSI_CTRL); /* Set the bits to inform how many MSIs are enabled */ msi_ctrl |= ((highbit(count) -1) << PCI_MSI_MME_SHIFT); pci_config_put16(handle, cap_ptr + PCI_MSI_CTRL, msi_ctrl); pci_config_put32(handle, cap_ptr + PCI_MSI_ADDR_OFFSET, msi_addr); if (msi_ctrl & PCI_MSI_64BIT_MASK) { pci_config_put32(handle, cap_ptr + PCI_MSI_ADDR_OFFSET + 4, msi_addr >> 32); pci_config_put16(handle, cap_ptr + PCI_MSI_64BIT_DATA, msi_data); } else { pci_config_put16(handle, cap_ptr + PCI_MSI_32BIT_DATA, msi_data); } } else if (type == DDI_INTR_TYPE_MSIX) { uintptr_t off; ddi_intr_msix_t *msix_p = i_ddi_get_msix(dip); /* Offset into the "inum"th entry in the MSI-X table */ off = (uintptr_t)msix_p->msix_tbl_addr + (inum * PCI_MSIX_VECTOR_SIZE); ddi_put32(msix_p->msix_tbl_hdl, (uint32_t *)(off + PCI_MSIX_DATA_OFFSET), msi_data); ddi_put64(msix_p->msix_tbl_hdl, (uint64_t *)(off + PCI_MSIX_LOWER_ADDR_OFFSET), msi_addr); } return (PSM_SUCCESS); } /* * This function returns the no. of vectors available for the pri. * dip is not used at this moment. If we really don't need that, * it will be removed. */ /*ARGSUSED*/ int apic_navail_vector(dev_info_t *dip, int pri) { int lowest, highest, i, navail, count; DDI_INTR_IMPLDBG((CE_CONT, "apic_navail_vector: dip: %p, pri: %x\n", (void *)dip, pri)); highest = apic_ipltopri[pri] + APIC_VECTOR_MASK; lowest = apic_ipltopri[pri - 1] + APIC_VECTOR_PER_IPL; navail = count = 0; /* It has to be contiguous */ for (i = lowest; i < highest; i++) { count = 0; while ((apic_vector_to_irq[i] == APIC_RESV_IRQ) && (i < highest)) { if (APIC_CHECK_RESERVE_VECTORS(i)) break; count++; i++; } if (count > navail) navail = count; } return (navail); } /* * Finds "count" contiguous MSI vectors starting at the proper alignment * at "pri". * Caller needs to make sure that count has to be power of 2 and should not * be < 1. */ static uchar_t apic_find_multi_vectors(int pri, int count) { int lowest, highest, i, navail, start, msibits; DDI_INTR_IMPLDBG((CE_CONT, "apic_find_mult: pri: %x, count: %x\n", pri, count)); highest = apic_ipltopri[pri] + APIC_VECTOR_MASK; lowest = apic_ipltopri[pri - 1] + APIC_VECTOR_PER_IPL; navail = 0; /* * msibits is the no. of lower order message data bits for the * allocated MSI vectors and is used to calculate the aligned * starting vector */ msibits = count - 1; /* It has to be contiguous */ for (i = lowest; i < highest; i++) { navail = 0; /* * starting vector has to be aligned accordingly for * multiple MSIs */ if (msibits) i = (i + msibits) & ~msibits; start = i; while ((apic_vector_to_irq[i] == APIC_RESV_IRQ) && (i < highest)) { if (APIC_CHECK_RESERVE_VECTORS(i)) break; navail++; if (navail >= count) return (start); i++; } } return (0); } /* * It finds the apic_irq_t associates with the dip, ispec and type. */ apic_irq_t * apic_find_irq(dev_info_t *dip, struct intrspec *ispec, int type) { apic_irq_t *irqp; int i; DDI_INTR_IMPLDBG((CE_CONT, "apic_find_irq: dip=0x%p vec=0x%x " "ipl=0x%x type=0x%x\n", (void *)dip, ispec->intrspec_vec, ispec->intrspec_pri, type)); for (i = apic_min_device_irq; i <= apic_max_device_irq; i++) { if ((irqp = apic_irq_table[i]) == NULL) continue; if ((irqp->airq_dip == dip) && (irqp->airq_origirq == ispec->intrspec_vec) && (irqp->airq_ipl == ispec->intrspec_pri)) { if (DDI_INTR_IS_MSI_OR_MSIX(type)) { if (APIC_IS_MSI_OR_MSIX_INDEX(irqp-> airq_mps_intr_index)) return (irqp); } else return (irqp); } } DDI_INTR_IMPLDBG((CE_CONT, "apic_find_irq: return NULL\n")); return (NULL); } /* * This function will return the pending bit of the irqp. * It either comes from the IRR register of the APIC or the RDT * entry of the I/O APIC. * For the IRR to work, it needs to be to its binding CPU */ static int apic_get_pending(apic_irq_t *irqp, int type) { int bit, index, irr, pending; int intin_no; volatile int32_t *ioapic; DDI_INTR_IMPLDBG((CE_CONT, "apic_get_pending: irqp: %p, cpuid: %x " "type: %x\n", (void *)irqp, irqp->airq_cpu & ~IRQ_USER_BOUND, type)); /* need to get on the bound cpu */ mutex_enter(&cpu_lock); affinity_set(irqp->airq_cpu & ~IRQ_USER_BOUND); index = irqp->airq_vector / 32; bit = irqp->airq_vector % 32; irr = apicadr[APIC_IRR_REG + index]; affinity_clear(); mutex_exit(&cpu_lock); pending = (irr & (1 << bit)) ? 1 : 0; if (!pending && (type == DDI_INTR_TYPE_FIXED)) { /* check I/O APIC for fixed interrupt */ intin_no = irqp->airq_intin_no; ioapic = apicioadr[irqp->airq_ioapicindex]; pending = (READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic, intin_no) & AV_PENDING) ? 1 : 0; } return (pending); } /* * This function will clear the mask for the interrupt on the I/O APIC */ static void apic_clear_mask(apic_irq_t *irqp) { int intin_no; int iflag; int32_t rdt_entry; volatile int32_t *ioapic; DDI_INTR_IMPLDBG((CE_CONT, "apic_clear_mask: irqp: %p\n", (void *)irqp)); intin_no = irqp->airq_intin_no; ioapic = apicioadr[irqp->airq_ioapicindex]; iflag = intr_clear(); lock_set(&apic_ioapic_lock); rdt_entry = READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic, intin_no); /* clear mask */ WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic, intin_no, ((~AV_MASK) & rdt_entry)); lock_clear(&apic_ioapic_lock); intr_restore(iflag); } /* * This function will mask the interrupt on the I/O APIC */ static void apic_set_mask(apic_irq_t *irqp) { int intin_no; volatile int32_t *ioapic; int iflag; int32_t rdt_entry; DDI_INTR_IMPLDBG((CE_CONT, "apic_set_mask: irqp: %p\n", (void *)irqp)); intin_no = irqp->airq_intin_no; ioapic = apicioadr[irqp->airq_ioapicindex]; iflag = intr_clear(); lock_set(&apic_ioapic_lock); rdt_entry = READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic, intin_no); /* mask it */ WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic, intin_no, (AV_MASK | rdt_entry)); lock_clear(&apic_ioapic_lock); intr_restore(iflag); } /* * This function allocate "count" vector(s) for the given "dip/pri/type" */ int apic_alloc_vectors(dev_info_t *dip, int inum, int count, int pri, int type, int behavior) { int rcount, i; uchar_t start, irqno, cpu; major_t major; apic_irq_t *irqptr; /* only supports MSI at the moment, will add MSI-X support later */ if (type != DDI_INTR_TYPE_MSI) return (0); DDI_INTR_IMPLDBG((CE_CONT, "apic_alloc_vectors: dip=0x%p type=%d " "inum=0x%x pri=0x%x count=0x%x behavior=%d\n", (void *)dip, type, inum, pri, count, behavior)); if (count > 1) { if (behavior == DDI_INTR_ALLOC_STRICT && (apic_multi_msi_enable == 0 || count > apic_multi_msi_max)) return (0); if (apic_multi_msi_enable == 0) count = 1; else if (count > apic_multi_msi_max) count = apic_multi_msi_max; } if ((rcount = apic_navail_vector(dip, pri)) > count) rcount = count; else if (rcount == 0 || (rcount < count && behavior == DDI_INTR_ALLOC_STRICT)) return (0); /* if not ISP2, then round it down */ if (!ISP2(rcount)) rcount = 1 << (highbit(rcount) - 1); mutex_enter(&airq_mutex); for (start = 0; rcount > 0; rcount >>= 1) { if ((start = apic_find_multi_vectors(pri, rcount)) != 0 || behavior == DDI_INTR_ALLOC_STRICT) break; } if (start == 0) { /* no vector available */ mutex_exit(&airq_mutex); return (0); } major = (dip != NULL) ? ddi_name_to_major(ddi_get_name(dip)) : 0; for (i = 0; i < rcount; i++) { if ((irqno = apic_allocate_irq(apic_first_avail_irq)) == (uchar_t)-1) { mutex_exit(&airq_mutex); DDI_INTR_IMPLDBG((CE_CONT, "apic_alloc_vectors: " "apic_allocate_irq failed\n")); return (i); } apic_max_device_irq = max(irqno, apic_max_device_irq); apic_min_device_irq = min(irqno, apic_min_device_irq); irqptr = apic_irq_table[irqno]; #ifdef DEBUG if (apic_vector_to_irq[start + i] != APIC_RESV_IRQ) DDI_INTR_IMPLDBG((CE_CONT, "apic_alloc_vectors: " "apic_vector_to_irq is not APIC_RESV_IRQ\n")); #endif apic_vector_to_irq[start + i] = (uchar_t)irqno; irqptr->airq_vector = (uchar_t)(start + i); irqptr->airq_ioapicindex = (uchar_t)inum; /* start */ irqptr->airq_intin_no = (uchar_t)rcount; irqptr->airq_ipl = pri; irqptr->airq_vector = start + i; irqptr->airq_origirq = (uchar_t)(inum + i); irqptr->airq_share_id = 0; irqptr->airq_mps_intr_index = MSI_INDEX; irqptr->airq_dip = dip; irqptr->airq_major = major; if (i == 0) /* they all bound to the same cpu */ cpu = irqptr->airq_cpu = apic_bind_intr(dip, irqno, 0xff, 0xff); else irqptr->airq_cpu = cpu; DDI_INTR_IMPLDBG((CE_CONT, "apic_alloc_vectors: irq=0x%x " "dip=0x%p vector=0x%x origirq=0x%x pri=0x%x\n", irqno, (void *)irqptr->airq_dip, irqptr->airq_vector, irqptr->airq_origirq, pri)); } mutex_exit(&airq_mutex); return (rcount); } void apic_free_vectors(dev_info_t *dip, int inum, int count, int pri, int type) { int i; apic_irq_t *irqptr; struct intrspec ispec; DDI_INTR_IMPLDBG((CE_CONT, "apic_free_vectors: dip: %p inum: %x " "count: %x pri: %x type: %x\n", (void *)dip, inum, count, pri, type)); /* for MSI/X only */ if (!DDI_INTR_IS_MSI_OR_MSIX(type)) return; for (i = 0; i < count; i++) { DDI_INTR_IMPLDBG((CE_CONT, "apic_free_vectors: inum=0x%x " "pri=0x%x count=0x%x\n", inum, pri, count)); ispec.intrspec_vec = inum + i; ispec.intrspec_pri = pri; if ((irqptr = apic_find_irq(dip, &ispec, type)) == NULL) { DDI_INTR_IMPLDBG((CE_CONT, "apic_free_vectors: " "dip=0x%p inum=0x%x pri=0x%x apic_find_irq() " "failed\n", (void *)dip, inum, pri)); continue; } irqptr->airq_mps_intr_index = FREE_INDEX; apic_vector_to_irq[irqptr->airq_vector] = APIC_RESV_IRQ; } } /* * check whether the system supports MSI * * If PCI-E capability is found, then this must be a PCI-E system. * Since MSI is required for PCI-E system, it returns PSM_SUCCESS * to indicate this system supports MSI. */ int apic_check_msi_support() { dev_info_t *cdip; char dev_type[16]; int dev_len; DDI_INTR_IMPLDBG((CE_CONT, "apic_check_msi_support:\n")); /* * check whether the first level children of root_node have * PCI-E capability */ for (cdip = ddi_get_child(ddi_root_node()); cdip != NULL; cdip = ddi_get_next_sibling(cdip)) { DDI_INTR_IMPLDBG((CE_CONT, "apic_check_msi_support: cdip: 0x%p," " driver: %s, binding: %s, nodename: %s\n", (void *)cdip, ddi_driver_name(cdip), ddi_binding_name(cdip), ddi_node_name(cdip))); dev_len = sizeof (dev_type); if (ddi_getlongprop_buf(DDI_DEV_T_ANY, cdip, DDI_PROP_DONTPASS, "device_type", (caddr_t)dev_type, &dev_len) != DDI_PROP_SUCCESS) continue; if (strcmp(dev_type, "pciex") == 0) return (PSM_SUCCESS); } /* MSI is not supported on this system */ DDI_INTR_IMPLDBG((CE_CONT, "apic_check_msi_support: no 'pciex' " "device_type found\n")); return (PSM_FAILURE); } int apic_get_vector_intr_info(int vecirq, apic_get_intr_t *intr_params_p) { struct autovec *av_dev; uchar_t irqno; int i; apic_irq_t *irq_p; /* Sanity check the vector/irq argument. */ ASSERT((vecirq >= 0) || (vecirq <= APIC_MAX_VECTOR)); mutex_enter(&airq_mutex); /* * Convert the vecirq arg to an irq using vector_to_irq table * if the arg is a vector. Pass thru if already an irq. */ if ((intr_params_p->avgi_req_flags & PSMGI_INTRBY_FLAGS) == PSMGI_INTRBY_VEC) irqno = apic_vector_to_irq[vecirq]; else irqno = vecirq; irq_p = apic_irq_table[irqno]; if ((irq_p == NULL) || (irq_p->airq_temp_cpu == IRQ_UNBOUND) || (irq_p->airq_temp_cpu == IRQ_UNINIT)) { mutex_exit(&airq_mutex); return (PSM_FAILURE); } if (intr_params_p->avgi_req_flags & PSMGI_REQ_CPUID) { /* Get the (temp) cpu from apic_irq table, indexed by irq. */ intr_params_p->avgi_cpu_id = irq_p->airq_temp_cpu; /* Return user bound info for intrd. */ if (intr_params_p->avgi_cpu_id & IRQ_USER_BOUND) { intr_params_p->avgi_cpu_id &= ~IRQ_USER_BOUND; intr_params_p->avgi_cpu_id |= PSMGI_CPU_USER_BOUND; } } if (intr_params_p->avgi_req_flags & PSMGI_REQ_VECTOR) { intr_params_p->avgi_vector = irq_p->airq_vector; } if (intr_params_p->avgi_req_flags & (PSMGI_REQ_NUM_DEVS | PSMGI_REQ_GET_DEVS)) { /* Get number of devices from apic_irq table shared field. */ intr_params_p->avgi_num_devs = irq_p->airq_share; } if (intr_params_p->avgi_req_flags & PSMGI_REQ_GET_DEVS) { intr_params_p->avgi_req_flags |= PSMGI_REQ_NUM_DEVS; /* Some devices have NULL dip. Don't count these. */ if (intr_params_p->avgi_num_devs > 0) { for (i = 0, av_dev = autovect[irqno].avh_link; av_dev; av_dev = av_dev->av_link) if (av_dev->av_vector && av_dev->av_dip) i++; intr_params_p->avgi_num_devs = MIN(intr_params_p->avgi_num_devs, i); } /* There are no viable dips to return. */ if (intr_params_p->avgi_num_devs == 0) intr_params_p->avgi_dip_list = NULL; else { /* Return list of dips */ /* Allocate space in array for that number of devs. */ intr_params_p->avgi_dip_list = kmem_zalloc( intr_params_p->avgi_num_devs * sizeof (dev_info_t *), KM_SLEEP); /* * Loop through the device list of the autovec table * filling in the dip array. * * Note that the autovect table may have some special * entries which contain NULL dips. These will be * ignored. */ for (i = 0, av_dev = autovect[irqno].avh_link; av_dev; av_dev = av_dev->av_link) if (av_dev->av_vector && av_dev->av_dip) intr_params_p->avgi_dip_list[i++] = av_dev->av_dip; } } mutex_exit(&airq_mutex); return (PSM_SUCCESS); } /* * apic_pci_msi_unconfigure: * * This and next two interfaces are copied from pci_intr_lib.c * Do ensure that these two files stay in sync. * These needed to be copied over here to avoid a deadlock situation on * certain mp systems that use MSI interrupts. * * IMPORTANT regards next three interfaces: * i) are called only for MSI/X interrupts. * ii) called with interrupts disabled, and must not block */ int apic_pci_msi_unconfigure(dev_info_t *rdip, int type, int inum) { ushort_t msi_ctrl; int cap_ptr = i_ddi_get_msi_msix_cap_ptr(rdip); ddi_acc_handle_t handle = i_ddi_get_pci_config_handle(rdip); if (handle == NULL) return (PSM_FAILURE); if (type == DDI_INTR_TYPE_MSI) { msi_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSI_CTRL); msi_ctrl &= (~PCI_MSI_MME_MASK); pci_config_put16(handle, cap_ptr + PCI_MSI_CTRL, msi_ctrl); pci_config_put32(handle, cap_ptr + PCI_MSI_ADDR_OFFSET, 0); if (msi_ctrl & PCI_MSI_64BIT_MASK) { pci_config_put16(handle, cap_ptr + PCI_MSI_64BIT_DATA, 0); pci_config_put32(handle, cap_ptr + PCI_MSI_ADDR_OFFSET + 4, 0); } else { pci_config_put16(handle, cap_ptr + PCI_MSI_32BIT_DATA, 0); } } else if (type == DDI_INTR_TYPE_MSIX) { uintptr_t off; ddi_intr_msix_t *msix_p = i_ddi_get_msix(rdip); /* Offset into the "inum"th entry in the MSI-X table */ off = (uintptr_t)msix_p->msix_tbl_addr + (inum * PCI_MSIX_VECTOR_SIZE); /* Reset the "data" and "addr" bits */ ddi_put32(msix_p->msix_tbl_hdl, (uint32_t *)(off + PCI_MSIX_DATA_OFFSET), 0); ddi_put64(msix_p->msix_tbl_hdl, (uint64_t *)off, 0); } return (PSM_SUCCESS); } /* * apic_pci_msi_enable_mode: */ int apic_pci_msi_enable_mode(dev_info_t *rdip, int type, int inum) { ushort_t msi_ctrl; int cap_ptr = i_ddi_get_msi_msix_cap_ptr(rdip); ddi_acc_handle_t handle = i_ddi_get_pci_config_handle(rdip); if (handle == NULL) return (PSM_FAILURE); if (type == DDI_INTR_TYPE_MSI) { msi_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSI_CTRL); if ((msi_ctrl & PCI_MSI_ENABLE_BIT)) return (PSM_SUCCESS); msi_ctrl |= PCI_MSI_ENABLE_BIT; pci_config_put16(handle, cap_ptr + PCI_MSI_CTRL, msi_ctrl); } else if (type == DDI_INTR_TYPE_MSIX) { uintptr_t off; ddi_intr_msix_t *msix_p; msi_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSIX_CTRL); if (msi_ctrl & PCI_MSIX_ENABLE_BIT) return (PSM_SUCCESS); msi_ctrl |= PCI_MSIX_ENABLE_BIT; pci_config_put16(handle, cap_ptr + PCI_MSIX_CTRL, msi_ctrl); msix_p = i_ddi_get_msix(rdip); /* Offset into "inum"th entry in the MSI-X table & clear mask */ off = (uintptr_t)msix_p->msix_tbl_addr + (inum * PCI_MSIX_VECTOR_SIZE) + PCI_MSIX_VECTOR_CTRL_OFFSET; ddi_put32(msix_p->msix_tbl_hdl, (uint32_t *)off, 0); } return (PSM_SUCCESS); } /* * apic_pci_msi_disable_mode: */ int apic_pci_msi_disable_mode(dev_info_t *rdip, int type, int inum) { ushort_t msi_ctrl; int cap_ptr = i_ddi_get_msi_msix_cap_ptr(rdip); ddi_acc_handle_t handle = i_ddi_get_pci_config_handle(rdip); if (handle == NULL) return (PSM_FAILURE); if (type == DDI_INTR_TYPE_MSI) { msi_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSI_CTRL); if (!(msi_ctrl & PCI_MSI_ENABLE_BIT)) return (PSM_SUCCESS); msi_ctrl &= ~PCI_MSI_ENABLE_BIT; /* MSI disable */ pci_config_put16(handle, cap_ptr + PCI_MSI_CTRL, msi_ctrl); } else if (type == DDI_INTR_TYPE_MSIX) { uintptr_t off; ddi_intr_msix_t *msix_p; msi_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSIX_CTRL); if (!(msi_ctrl & PCI_MSIX_ENABLE_BIT)) return (PSM_SUCCESS); msix_p = i_ddi_get_msix(rdip); /* Offset into "inum"th entry in the MSI-X table & mask it */ off = (uintptr_t)msix_p->msix_tbl_addr + (inum * PCI_MSIX_VECTOR_SIZE) + PCI_MSIX_VECTOR_CTRL_OFFSET; ddi_put32(msix_p->msix_tbl_hdl, (uint32_t *)off, 0x1); } return (PSM_SUCCESS); } /* * This function provides external interface to the nexus for all * functionalities related to the new DDI interrupt framework. * * Input: * dip - pointer to the dev_info structure of the requested device * hdlp - pointer to the internal interrupt handle structure for the * requested interrupt * intr_op - opcode for this call * result - pointer to the integer that will hold the result to be * passed back if return value is PSM_SUCCESS * * Output: * return value is either PSM_SUCCESS or PSM_FAILURE */ int apic_intr_ops(dev_info_t *dip, ddi_intr_handle_impl_t *hdlp, psm_intr_op_t intr_op, int *result) { int cap, ret; int count_vec; int cpu; int old_priority; int new_priority; int iflag; apic_irq_t *irqp; struct intrspec *ispec, intr_spec; DDI_INTR_IMPLDBG((CE_CONT, "apic_intr_ops: dip: %p hdlp: %p " "intr_op: %x\n", (void *)dip, (void *)hdlp, intr_op)); ispec = &intr_spec; ispec->intrspec_pri = hdlp->ih_pri; ispec->intrspec_vec = hdlp->ih_inum; ispec->intrspec_func = hdlp->ih_cb_func; switch (intr_op) { case PSM_INTR_OP_CHECK_MSI: /* * Check MSI/X is supported or not at APIC level and * masked off the MSI/X bits in hdlp->ih_type if not * supported before return. If MSI/X is supported, * leave the ih_type unchanged and return. * * hdlp->ih_type passed in from the nexus has all the * interrupt types supported by the device. */ if (apic_support_msi == 0) { /* * if apic_support_msi is not set, call * apic_check_msi_support() to check whether msi * is supported first */ if (apic_check_msi_support() == PSM_SUCCESS) apic_support_msi = 1; else apic_support_msi = -1; } if (apic_support_msi == 1) *result = hdlp->ih_type; else *result = hdlp->ih_type & ~(DDI_INTR_TYPE_MSI | DDI_INTR_TYPE_MSIX); break; case PSM_INTR_OP_ALLOC_VECTORS: *result = apic_alloc_vectors(dip, hdlp->ih_inum, hdlp->ih_scratch1, hdlp->ih_pri, hdlp->ih_type, (int)(uintptr_t)hdlp->ih_scratch2); break; case PSM_INTR_OP_FREE_VECTORS: apic_free_vectors(dip, hdlp->ih_inum, hdlp->ih_scratch1, hdlp->ih_pri, hdlp->ih_type); break; case PSM_INTR_OP_NAVAIL_VECTORS: *result = apic_navail_vector(dip, hdlp->ih_pri); break; case PSM_INTR_OP_XLATE_VECTOR: ispec = ((ihdl_plat_t *)hdlp->ih_private)->ip_ispecp; *result = apic_introp_xlate(dip, ispec, hdlp->ih_type); break; case PSM_INTR_OP_GET_PENDING: if ((irqp = apic_find_irq(dip, ispec, hdlp->ih_type)) == NULL) return (PSM_FAILURE); *result = apic_get_pending(irqp, hdlp->ih_type); break; case PSM_INTR_OP_CLEAR_MASK: if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) return (PSM_FAILURE); irqp = apic_find_irq(dip, ispec, hdlp->ih_type); if (irqp == NULL) return (PSM_FAILURE); apic_clear_mask(irqp); break; case PSM_INTR_OP_SET_MASK: if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) return (PSM_FAILURE); if ((irqp = apic_find_irq(dip, ispec, hdlp->ih_type)) == NULL) return (PSM_FAILURE); apic_set_mask(irqp); break; case PSM_INTR_OP_GET_CAP: cap = DDI_INTR_FLAG_PENDING; if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) cap |= DDI_INTR_FLAG_MASKABLE; *result = cap; break; case PSM_INTR_OP_GET_SHARED: if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) return (PSM_FAILURE); if ((irqp = apic_find_irq(dip, ispec, hdlp->ih_type)) == NULL) return (PSM_FAILURE); *result = irqp->airq_share ? 1: 0; break; case PSM_INTR_OP_SET_PRI: old_priority = hdlp->ih_pri; /* save old value */ new_priority = *(int *)result; /* try the new value */ /* First, check if "hdlp->ih_scratch1" vectors exist? */ if (apic_navail_vector(dip, new_priority) < hdlp->ih_scratch1) return (PSM_FAILURE); /* Now allocate the vectors */ count_vec = apic_alloc_vectors(dip, hdlp->ih_inum, hdlp->ih_scratch1, new_priority, hdlp->ih_type, DDI_INTR_ALLOC_STRICT); /* Did we get the new vectors? */ if (!count_vec) return (PSM_FAILURE); /* Finally, free the previously allocated vectors */ apic_free_vectors(dip, hdlp->ih_inum, count_vec, old_priority, hdlp->ih_type); hdlp->ih_pri = new_priority; /* set the new value */ break; case PSM_INTR_OP_SET_CPU: /* * The interrupt handle given here has been allocated * specifically for this command, and ih_private carries * a CPU value. */ cpu = (int)(intptr_t)hdlp->ih_private; if (!apic_cpu_in_range(cpu)) { *result = EINVAL; return (PSM_FAILURE); } /* Convert the vector to the irq using vector_to_irq table. */ mutex_enter(&airq_mutex); irqp = apic_irq_table[apic_vector_to_irq[hdlp->ih_vector]]; mutex_exit(&airq_mutex); if (irqp == NULL) { *result = ENXIO; return (PSM_FAILURE); } iflag = intr_clear(); lock_set(&apic_ioapic_lock); ret = apic_rebind_all(irqp, cpu); lock_clear(&apic_ioapic_lock); intr_restore(iflag); if (ret) { *result = EIO; return (PSM_FAILURE); } *result = 0; break; case PSM_INTR_OP_GET_INTR: /* * The interrupt handle given here has been allocated * specifically for this command, and ih_private carries * a pointer to a apic_get_intr_t. */ if (apic_get_vector_intr_info( hdlp->ih_vector, hdlp->ih_private) != PSM_SUCCESS) return (PSM_FAILURE); break; case PSM_INTR_OP_SET_CAP: default: return (PSM_FAILURE); } return (PSM_SUCCESS); }