diff options
Diffstat (limited to 'src/VBox/Additions/solaris/Virtio/VirtioPci-solaris.c')
| -rw-r--r-- | src/VBox/Additions/solaris/Virtio/VirtioPci-solaris.c | 665 |
1 files changed, 665 insertions, 0 deletions
diff --git a/src/VBox/Additions/solaris/Virtio/VirtioPci-solaris.c b/src/VBox/Additions/solaris/Virtio/VirtioPci-solaris.c new file mode 100644 index 00000000..ee3e53fc --- /dev/null +++ b/src/VBox/Additions/solaris/Virtio/VirtioPci-solaris.c @@ -0,0 +1,665 @@ +/* $Id: VirtioPci-solaris.c $ */ +/** @file + * VirtualBox Guest Additions - Virtio Driver for Solaris, PCI Hypervisor Interface. + */ + +/* + * Copyright (C) 2010-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "VirtioPci-solaris.h" + +#include <iprt/asm.h> +#include <iprt/assert.h> +#include <iprt/mem.h> +#include <iprt/param.h> +#include <VBox/log.h> + +#include <sys/pci.h> +#include <sys/param.h> + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/* + * Pci Register offsets. + */ +#define VIRTIO_PCI_HOST_FEATURES 0x00 +#define VIRTIO_PCI_GUEST_FEATURES 0x04 +#define VIRTIO_PCI_QUEUE_PFN 0x08 +#define VIRTIO_PCI_QUEUE_NUM 0x0C +#define VIRTIO_PCI_QUEUE_SEL 0x0E +#define VIRTIO_PCI_QUEUE_NOTIFY 0x10 +#define VIRTIO_PCI_STATUS 0x12 +#define VIRTIO_PCI_ISR 0x13 +#define VIRTIO_PCI_CONFIG 0x14 + +#define VIRTIO_PCI_RING_ALIGN PAGE_SIZE +#define VIRTIO_PCI_QUEUE_ADDR_SHIFT PAGE_SHIFT + +/** + * virtio_pci_t: Private data per device instance. + */ +typedef struct virtio_pci_t +{ + ddi_acc_handle_t hIO; /* IO handle */ + caddr_t addrIOBase; /* IO base address */ +} virtio_pci_t; + +/** + * virtio_pci_queue_t: Private data per queue instance. + */ +typedef struct virtio_pci_queue_t +{ + ddi_dma_handle_t hDMA; /* DMA handle. */ + ddi_acc_handle_t hIO; /* IO handle. */ + size_t cbBuf; /* Physical address of buffer. */ + paddr_t physBuf; /* Size of buffer. */ + pfn_t pageBuf; /* Page frame number of buffer. */ +} virtio_pci_queue_t; + +static ddi_device_acc_attr_t g_VirtioPciAccAttrRegs = +{ + DDI_DEVICE_ATTR_V0, /* Version */ + DDI_STRUCTURE_LE_ACC, /* Structural data access in little endian. */ + DDI_STRICTORDER_ACC, /* Strict ordering. */ + DDI_DEFAULT_ACC /* Default access, possible panic on errors*/ +}; + +static ddi_device_acc_attr_t g_VirtioPciAccAttrRing = +{ + DDI_DEVICE_ATTR_V0, /* Version. */ + DDI_NEVERSWAP_ACC, /* Data access with no byte swapping*/ + DDI_STRICTORDER_ACC, /* Strict ordering. */ + DDI_DEFAULT_ACC /* Default access, possible panic on errors*/ +}; + +static ddi_dma_attr_t g_VirtioPciDmaAttrRing = +{ + DMA_ATTR_V0, /* Version. */ + 0, /* Lowest usable address. */ + 0xffffffffffffffffULL, /* Highest usable address. */ + 0x7fffffff, /* Maximum DMAable byte count. */ + VIRTIO_PCI_RING_ALIGN, /* Alignment in bytes. */ + 0x7ff, /* Bitmap of burst sizes */ + 1, /* Minimum transfer. */ + 0xffffffffU, /* Maximum transfer. */ + 0xffffffffffffffffULL, /* Maximum segment length. */ + 1, /* Maximum number of segments. */ + 1, /* Granularity. */ + 0 /* Flags (reserved). */ +}; + +/** Pointer to the interrupt handle vector */ +static ddi_intr_handle_t *g_pIntr; +/** Number of actually allocated interrupt handles */ +static size_t g_cIntrAllocated; +/** The IRQ Mutex */ +static kmutex_t g_IrqMtx; + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +static void *VirtioPciAlloc(PVIRTIODEVICE pDevice); +static void VirtioPciFree(PVIRTIODEVICE pDevice); +static int VirtioPciAttach(PVIRTIODEVICE pDevice); +static int VirtioPciDetach(PVIRTIODEVICE pDevice); +static uint32_t VirtioPciGetFeatures(PVIRTIODEVICE pDevice); +static void VirtioPciSetFeatures(PVIRTIODEVICE pDevice, uint32_t fFeatures); +static int VirtioPciNotifyQueue(PVIRTIODEVICE pDevice, PVIRTIOQUEUE pQueue); +static void VirtioPciGet(PVIRTIODEVICE pDevice, off_t off, void *pv, size_t cb); +static void VirtioPciSet(PVIRTIODEVICE pDevice, off_t off, void *pv, size_t cb); +static void *VirtioPciGetQueue(PVIRTIODEVICE pDevice, PVIRTIOQUEUE pQueue); +static void VirtioPciPutQueue(PVIRTIODEVICE pDevice, PVIRTIOQUEUE pQueue); +static void VirtioPciSetStatus(PVIRTIODEVICE pDevice, uint8_t Status); + +static uint_t VirtioPciISR(caddr_t Arg); +static int VirtioPciSetupIRQ(dev_info_t *pDip); +static void VirtioPciRemoveIRQ(dev_info_t *pDip); + +/** + * Hypervisor operations for Virtio Pci. + */ +VIRTIOHYPEROPS g_VirtioHyperOpsPci = +{ + VirtioPciAlloc, + VirtioPciFree, + VirtioPciAttach, + VirtioPciDetach, + VirtioPciGetFeatures, + VirtioPciSetFeatures, + VirtioPciNotifyQueue, + VirtioPciGet, + VirtioPciSet, + VirtioPciGetQueue, + VirtioPciPutQueue, + VirtioPciSetStatus +}; + + +/** + * Virtio Pci private data allocation routine. + * + * @param pDevice Pointer to the Virtio device instance. + * @return Allocated private data structure which must only be freed by calling + * VirtioPciFree(). + */ +static void *VirtioPciAlloc(PVIRTIODEVICE pDevice) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciAlloc pDevice=%p\n", pDevice)); + virtio_pci_t *pPciData = RTMemAllocZ(sizeof(virtio_pci_t)); + return pPciData; +} + + +/** + * Virtio Pci private data deallocation routine. + * + * @param pDevice Pointer to the Virtio device instance. + */ +static void VirtioPciFree(PVIRTIODEVICE pDevice) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciFree pDevice=%p\n", pDevice)); + virtio_pci_t *pPciData = pDevice->pvHyper; + if (pPciData) + { + RTMemFree(pDevice->pvHyper); + pDevice->pvHyper = NULL; + } +} + + +/** + * Virtio Pci attach routine, called from driver attach. + * + * @param pDevice Pointer to the Virtio device instance. + * + * @return Solaris DDI error code. DDI_SUCCESS or DDI_FAILURE. + */ +static int VirtioPciAttach(PVIRTIODEVICE pDevice) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciAttach pDevice=%p\n", pDevice)); + virtio_pci_t *pPciData = pDevice->pvHyper; + AssertReturn(pPciData, DDI_FAILURE); + + int rc = ddi_regs_map_setup(pDevice->pDip, + 1, /* reg. num */ + &pPciData->addrIOBase, + 0, /* offset */ + 0, /* length */ + &g_VirtioPciAccAttrRegs, + &pPciData->hIO); + if (rc == DDI_SUCCESS) + { + /* + * Reset the device. + */ + VirtioPciSetStatus(pDevice, 0); + + /* + * Add interrupt handler. + */ + VirtioPciSetupIRQ(pDevice->pDip); + + LogFlow((VIRTIOLOGNAME ":VirtioPciAttach: successfully mapped registers.\n")); + return DDI_SUCCESS; + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciAttach: ddi_regs_map_setup failed. rc=%d\n", rc)); + return DDI_FAILURE; +} + + +/** + * Virtio Pci detach routine, called from driver detach. + * + * @param pDevice Pointer to the Virtio device instance. + * + * @return Solaris DDI error code. DDI_SUCCESS or DDI_FAILURE. + */ +static int VirtioPciDetach(PVIRTIODEVICE pDevice) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciDetach pDevice=%p\n", pDevice)); + virtio_pci_t *pPciData = pDevice->pvHyper; + AssertReturn(pPciData, DDI_FAILURE); + + VirtioPciRemoveIRQ(pDevice->pDip); + ddi_regs_map_free(&pPciData->hIO); + return DDI_SUCCESS; +} + + +/** + * Get host supported features. + * + * @param pDevice Pointer to the Virtio device instance. + * + * @return Mask of host features. + */ +static uint32_t VirtioPciGetFeatures(PVIRTIODEVICE pDevice) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciGetFeatures pDevice=%p\n", pDevice)); + virtio_pci_t *pPciData = pDevice->pvHyper; + AssertReturn(pPciData, 0); + + return ddi_get32(pPciData->hIO, (uint32_t *)(pPciData->addrIOBase + VIRTIO_PCI_HOST_FEATURES)); +} + + +/** + * Set guest supported features. + * + * @param pDevice Pointer to the Virtio device instance. + * @param u32Features Mask of guest supported features. + */ +static void VirtioPciSetFeatures(PVIRTIODEVICE pDevice, uint32_t u32Features) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciSetFeatures pDevice=%p\n", pDevice)); + virtio_pci_t *pPciData = pDevice->pvHyper; + AssertReturnVoid(pPciData); + + ddi_put32(pPciData->hIO, (uint32_t *)(pPciData->addrIOBase + VIRTIO_PCI_GUEST_FEATURES), u32Features); +} + + +/** + * Update the queue, notify the host. + * + * @param pDevice Pointer to the Virtio device instance. + * @param pQueue Pointer to the Queue that is doing the notification. + * + * @return Solaris DDI error code. DDI_SUCCESS or DDI_FAILURE. + */ +static int VirtioPciNotifyQueue(PVIRTIODEVICE pDevice, PVIRTIOQUEUE pQueue) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciNotifyQueue pDevice=%p pQueue=%p\n", pDevice, pQueue)); + virtio_pci_t *pPciData = pDevice->pvHyper; + AssertReturn(pPciData, DDI_FAILURE); + + pQueue->Ring.pRingAvail->Index += pQueue->cBufs; + pQueue->cBufs = 0; + + ASMCompilerBarrier(); + + ddi_put16(pPciData->hIO, (uint16_t *)(pPciData->addrIOBase + VIRTIO_PCI_QUEUE_NOTIFY), pQueue->QueueIndex); + cmn_err(CE_NOTE, "VirtioPciNotifyQueue\n"); +} + + + +/** + * Virtio Pci set (write) routine. + * + * @param pDevice Pointer to the Virtio device instance. + * @param off Offset into the PCI config space. + * @param pv Pointer to the buffer to write from. + * @param cb Size of the buffer in bytes. + */ +static void VirtioPciSet(PVIRTIODEVICE pDevice, off_t off, void *pv, size_t cb) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciSet pDevice=%p\n", pDevice)); + virtio_pci_t *pPciData = pDevice->pvHyper; + AssertReturnVoid(pPciData); + + uint8_t *pb = pv; + for (size_t i = 0; i < cb; i++, pb++) + ddi_put8(pPciData->hIO, (uint8_t *)(pPciData->addrIOBase + VIRTIO_PCI_CONFIG + off + i), *pb); +} + + +/** + * Virtio Pci get (read) routine. + * + * @param pDevice Pointer to the Virtio device instance. + * @param off Offset into the PCI config space. + * @param pv Where to store the read data. + * @param cb Size of the buffer in bytes. + */ +static void VirtioPciGet(PVIRTIODEVICE pDevice, off_t off, void *pv, size_t cb) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciGet pDevice=%p off=%u pv=%p cb=%u\n", pDevice, off, pv, cb)); + virtio_pci_t *pPciData = pDevice->pvHyper; + AssertReturnVoid(pPciData); + + uint8_t *pb = pv; + for (size_t i = 0; i < cb; i++, pb++) + *pb = ddi_get8(pPciData->hIO, (uint8_t *)(pPciData->addrIOBase + VIRTIO_PCI_CONFIG + off + i)); +} + + +/** + * Virtio Pci put queue routine. Places the queue and frees associated queue. + * + * @param pDevice Pointer to the Virtio device instance. + * @param pQueue Pointer to the queue. + */ +static void VirtioPciPutQueue(PVIRTIODEVICE pDevice, PVIRTIOQUEUE pQueue) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciPutQueue pDevice=%p pQueue=%p\n", pDevice, pQueue)); + AssertReturnVoid(pDevice); + AssertReturnVoid(pQueue); + + virtio_pci_t *pPci = pDevice->pvHyper; + AssertReturnVoid(pPci); + virtio_pci_queue_t *pPciQueue = pQueue->pvData; + if (RT_UNLIKELY(!pPciQueue)) + { + LogRel((VIRTIOLOGNAME ":VirtioPciPutQueue missing Pci queue.\n")); + return; + } + + ddi_put16(pPci->hIO, (uint16_t *)(pPci->addrIOBase + VIRTIO_PCI_QUEUE_SEL), pQueue->QueueIndex); + ddi_put32(pPci->hIO, (uint32_t *)(pPci->addrIOBase + VIRTIO_PCI_QUEUE_PFN), 0); + + ddi_dma_unbind_handle(pPciQueue->hDMA); + ddi_dma_mem_free(&pPciQueue->hIO); + ddi_dma_free_handle(&pPciQueue->hDMA); + RTMemFree(pPciQueue); +} + + +/** + * Virtio Pci get queue routine. Allocates a PCI queue and DMA resources. + * + * @param pDevice Pointer to the Virtio device instance. + * @param pQueue Where to store the queue. + * + * @return An allocated Virtio Pci queue, or NULL in case of errors. + */ +static void *VirtioPciGetQueue(PVIRTIODEVICE pDevice, PVIRTIOQUEUE pQueue) +{ + LogFlowFunc((VIRTIOLOGNAME ":VirtioPciGetQueue pDevice=%p pQueue=%p\n", pDevice, pQueue)); + AssertReturn(pDevice, NULL); + + virtio_pci_t *pPci = pDevice->pvHyper; + AssertReturn(pPci, NULL); + + /* + * Select a Queue. + */ + ddi_put16(pPci->hIO, (uint16_t *)(pPci->addrIOBase + VIRTIO_PCI_QUEUE_SEL), pQueue->QueueIndex); + + /* + * Get the currently selected Queue's size. + */ + pQueue->Ring.cDesc = ddi_get16(pPci->hIO, (uint16_t *)(pPci->addrIOBase + VIRTIO_PCI_QUEUE_NUM)); + if (RT_UNLIKELY(!pQueue->Ring.cDesc)) + { + LogRel((VIRTIOLOGNAME ": VirtioPciGetQueue: Queue[%d] has no descriptors.\n", pQueue->QueueIndex)); + return NULL; + } + + /* + * Check if it's already active. + */ + uint32_t QueuePFN = ddi_get32(pPci->hIO, (uint32_t *)(pPci->addrIOBase + VIRTIO_PCI_QUEUE_PFN)); + if (QueuePFN != 0) + { + LogRel((VIRTIOLOGNAME ":VirtioPciGetQueue: Queue[%d] is already used.\n", pQueue->QueueIndex)); + return NULL; + } + + LogFlow(("Queue[%d] has %d slots.\n", pQueue->QueueIndex, pQueue->Ring.cDesc)); + + /* + * Allocate and initialize Pci queue data. + */ + virtio_pci_queue_t *pPciQueue = RTMemAllocZ(sizeof(virtio_pci_queue_t)); + if (pPciQueue) + { + /* + * Setup DMA. + */ + size_t cbQueue = VirtioRingSize(pQueue->Ring.cDesc, VIRTIO_PCI_RING_ALIGN); + int rc = ddi_dma_alloc_handle(pDevice->pDip, &g_VirtioPciDmaAttrRing, DDI_DMA_SLEEP, 0 /* addr */, &pPciQueue->hDMA); + if (rc == DDI_SUCCESS) + { + rc = ddi_dma_mem_alloc(pPciQueue->hDMA, cbQueue, &g_VirtioPciAccAttrRing, DDI_DMA_CONSISTENT, + DDI_DMA_SLEEP, 0 /* addr */, &pQueue->pQueue, &pPciQueue->cbBuf, + &pPciQueue->hIO); + if (rc == DDI_SUCCESS) + { + AssertRelease(pPciQueue->cbBuf >= cbQueue); + ddi_dma_cookie_t DmaCookie; + uint_t cCookies; + rc = ddi_dma_addr_bind_handle(pPciQueue->hDMA, NULL /* addrspace */, pQueue->pQueue, pPciQueue->cbBuf, + DDI_DMA_RDWR | DDI_DMA_CONSISTENT, DDI_DMA_SLEEP, + 0 /* addr */, &DmaCookie, &cCookies); + if (rc == DDI_SUCCESS) + { + pPciQueue->physBuf = DmaCookie.dmac_laddress; + pPciQueue->pageBuf = pPciQueue->physBuf >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; + + LogFlow((VIRTIOLOGNAME ":VirtioPciGetQueue: Queue[%d]%p physBuf=%x pfn of Buf %#x\n", pQueue->QueueIndex, + pQueue->pQueue, pPciQueue->physBuf, pPciQueue->pageBuf)); + cmn_err(CE_NOTE, ":VirtioPciGetQueue: Queue[%d]%p physBuf=%x pfn of Buf %x\n", pQueue->QueueIndex, + pQueue->pQueue, pPciQueue->physBuf, pPciQueue->pageBuf); + + /* + * Activate the queue and initialize a ring for the queue. + */ + memset(pQueue->pQueue, 0, pPciQueue->cbBuf); + ddi_put32(pPci->hIO, (uint32_t *)(pPci->addrIOBase + VIRTIO_PCI_QUEUE_PFN), pPciQueue->pageBuf); + VirtioRingInit(pQueue, pQueue->Ring.cDesc, pQueue->pQueue, VIRTIO_PCI_RING_ALIGN); + return pPciQueue; + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciGetQueue: ddi_dma_addr_bind_handle failed. rc=%d\n", rc)); + + ddi_dma_mem_free(&pPciQueue->hIO); + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciGetQueue: ddi_dma_mem_alloc failed for %u bytes rc=%d\n", cbQueue, rc)); + + ddi_dma_free_handle(&pPciQueue->hDMA); + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciGetQueue: ddi_dma_alloc_handle failed. rc=%d\n", rc)); + + RTMemFree(pPciQueue); + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciGetQueue: failed to alloc %u bytes for Pci Queue data.\n", sizeof(virtio_pci_queue_t))); + + return NULL; +} + + +/** + * Set the Virtio PCI status bit. + * + * @param pDevice Pointer to the Virtio device instance. + * @param Status The status to set. + */ +static void VirtioPciSetStatus(PVIRTIODEVICE pDevice, uint8_t Status) +{ + virtio_pci_t *pPciData = pDevice->pvHyper; + ddi_put8(pPciData->hIO, (uint8_t *)(pPciData->addrIOBase + VIRTIO_PCI_STATUS), Status); +} + + +/** + * Sets up IRQ for Virtio PCI. + * + * @param pDip Pointer to the device info structure. + * + * @return Solaris error code. + */ +static int VirtioPciSetupIRQ(dev_info_t *pDip) +{ + LogFlow((VIRTIOLOGNAME ":VirtioPciSetupIRQ: pDip=%p\n", pDip)); + cmn_err(CE_NOTE, "VirtioPciSetupIRQ\n"); + + int IntrType = 0; + int rc = ddi_intr_get_supported_types(pDip, &IntrType); + if (rc == DDI_SUCCESS) + { + /* We won't need to bother about MSIs. */ + if (IntrType & DDI_INTR_TYPE_FIXED) + { + int IntrCount = 0; + rc = ddi_intr_get_nintrs(pDip, IntrType, &IntrCount); + if ( rc == DDI_SUCCESS + && IntrCount > 0) + { + int IntrAvail = 0; + rc = ddi_intr_get_navail(pDip, IntrType, &IntrAvail); + if ( rc == DDI_SUCCESS + && IntrAvail > 0) + { + /* Allocated kernel memory for the interrupt handles. The allocation size is stored internally. */ + g_pIntr = RTMemAllocZ(IntrCount * sizeof(ddi_intr_handle_t)); + if (g_pIntr) + { + int IntrAllocated; + rc = ddi_intr_alloc(pDip, g_pIntr, IntrType, 0, IntrCount, &IntrAllocated, DDI_INTR_ALLOC_NORMAL); + if ( rc == DDI_SUCCESS + && IntrAllocated > 0) + { + g_cIntrAllocated = IntrAllocated; + uint_t uIntrPriority; + rc = ddi_intr_get_pri(g_pIntr[0], &uIntrPriority); + if (rc == DDI_SUCCESS) + { + /* Initialize the mutex. */ + mutex_init(&g_IrqMtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(uIntrPriority)); + + /* Assign interrupt handler functions and enable interrupts. */ + for (int i = 0; i < IntrAllocated; i++) + { + rc = ddi_intr_add_handler(g_pIntr[i], (ddi_intr_handler_t *)VirtioPciISR, + NULL /* No Private Data */, NULL); + if (rc == DDI_SUCCESS) + rc = ddi_intr_enable(g_pIntr[i]); + if (rc != DDI_SUCCESS) + { + /* Changing local IntrAllocated to hold so-far allocated handles for freeing. */ + IntrAllocated = i; + break; + } + } + if (rc == DDI_SUCCESS) + { + cmn_err(CE_NOTE, "VirtioPciSetupIRQ success\n"); + return rc; + } + + /* Remove any assigned handlers */ + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ failed to assign IRQs allocated=%d\n", IntrAllocated)); + for (int x = 0; x < IntrAllocated; x++) + ddi_intr_remove_handler(g_pIntr[x]); + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ failed to get priority of interrupt. rc=%d\n", rc)); + + /* Remove allocated IRQs, too bad we can free only one handle at a time. */ + for (int k = 0; k < g_cIntrAllocated; k++) + ddi_intr_free(g_pIntr[k]); + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ: failed to allocated IRQs. count=%d\n", IntrCount)); + RTMemFree(g_pIntr); + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ: failed to allocated IRQs. count=%d\n", IntrCount)); + } + else + { + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ: failed to get or insufficient available IRQs. rc=%d IntrAvail=%d\n", + rc, IntrAvail)); + } + } + else + { + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ: failed to get or insufficient number of IRQs. rc=%d IntrCount=%d\n", rc, + IntrCount)); + } + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ: invalid irq type. IntrType=%#x\n", IntrType)); + } + else + LogRel((VIRTIOLOGNAME ":VirtioPciSetupIRQ: failed to get supported interrupt types\n")); + return rc; +} + + +/** + * Removes IRQ for Virtio PCI device. + * + * @param pDip Pointer to the device info structure. + */ +static void VirtioPciRemoveIRQ(dev_info_t *pDip) +{ + LogFlow((VIRTIOLOGNAME ":VirtioPciRemoveIRQ pDip=%p:\n", pDip)); + + for (int i = 0; i < g_cIntrAllocated; i++) + { + int rc = ddi_intr_disable(g_pIntr[i]); + if (rc == DDI_SUCCESS) + { + rc = ddi_intr_remove_handler(g_pIntr[i]); + if (rc == DDI_SUCCESS) + ddi_intr_free(g_pIntr[i]); + } + } + RTMemFree(g_pIntr); + mutex_destroy(&g_IrqMtx); +} + + +/** + * Interrupt Service Routine for Virtio PCI device. + * + * @param Arg Private data (unused, will be NULL). + * @returns DDI_INTR_CLAIMED if it's our interrupt, DDI_INTR_UNCLAIMED if it isn't. + */ +static uint_t VirtioPciISR(caddr_t Arg) +{ + LogFlow((VIRTIOLOGNAME ":VBoxGuestSolarisISR\n")); + cmn_err(CE_NOTE, "VBoxGuestSolarisISRd Arg=%p\n", Arg); + + mutex_enter(&g_IrqMtx); + bool fOurIRQ = false; + /* + * Call the DeviceOps ISR routine somehow which should notify all Virtio queues + * on the interrupt. + */ + mutex_exit(&g_IrqMtx); + + return fOurIRQ ? DDI_INTR_CLAIMED : DDI_INTR_UNCLAIMED; +} + |