18f97bf2f8
Squashed commits: 1. x86_64: qemu: implement pci-e functions and enumerate pci-e devices on boot 2. virt: add qemu pci-testdev driver 3. pcie: types array should be null terminated 4. pcie: enable don't take flags, hardcoded enabling flags 5. pcie: checking bar > 4 for 64bit bars are sufficient 6. pcie: qemu: remove not used header 7. pcie: qemu: return -EINVAL if buffer argument is NULL 8. pcie: make pcie enumerate routine as common instead of architecture dependent 9. pcie: cosmetic changes to fit check tools 10. pcie: create MSI/MSIX related marcos and simplify the msi/msix routines
130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/*****************************************************************************
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* drivers/virt/qemu_pci_test.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*****************************************************************************/
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/*****************************************************************************
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* Included Files
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*****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/arch.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <math.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sched.h>
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#include <nuttx/pcie/pcie.h>
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#include <nuttx/virt/qemu_pci.h>
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/*****************************************************************************
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* Pre-processor Definitions
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*****************************************************************************/
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/*****************************************************************************
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* Private Types
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*****************************************************************************/
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struct pci_test_dev_hdr_s
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{
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volatile uint8_t test; /* write-only, starts a given test number */
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volatile uint8_t width_type; /* read-only, type and width of access for a given test.
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* 1,2,4 for byte,word or long write.
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* any other value if test not supported on this BAR */
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volatile uint8_t pad0[2];
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volatile uint32_t offset; /* read-only, offset in this BAR for a given test */
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volatile uint32_t data; /* read-only, data to use for a given test */
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volatile uint32_t count; /* for debugging. number of writes detected. */
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volatile uint8_t name[]; /* for debugging. 0-terminated ASCII string. */
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};
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/*****************************************************************************
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* Public Functions
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*****************************************************************************/
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/*****************************************************************************
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* Name: qemu_pci_test_probe
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*
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* Description:
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* Initialize device
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*****************************************************************************/
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int qemu_pci_test_probe(FAR struct pcie_bus_s *bus,
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FAR struct pcie_dev_type_s *type, uint16_t bdf)
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{
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uint32_t bar[2];
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struct pcie_dev_s dev =
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{
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.bus = bus,
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.type = type,
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.bdf = bdf,
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};
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pci_enable_device(&dev);
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for (int ii = 0; ii < 2; ii++)
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{
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pci_get_bar(&dev, ii, bar + ii);
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if ((bar[ii] & PCI_BAR_IO) != PCI_BAR_IO)
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{
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pciinfo("Mapping BAR%d: %x\n", ii, bar[ii]);
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pci_map_bar(&dev, ii, 0x1000, NULL);
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struct pci_test_dev_hdr_s *ptr =
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(struct pci_test_dev_hdr_s *)(uintptr_t)bar[ii];
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int i = 0;
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while (1)
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{
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ptr->test = i;
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if (ptr->width_type != 1 &&
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ptr->width_type != 2 &&
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ptr->width_type != 4)
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break;
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pciinfo("Test[%d] Size:%d %s\n",
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i, ptr->width_type,
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ptr->name);
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i++;
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}
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}
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}
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return OK;
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}
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/*****************************************************************************
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* Public Data
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*****************************************************************************/
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struct pcie_dev_type_s pcie_type_qemu_pci_test =
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{
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.vendor = 0x1b36,
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.device = 0x0005,
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.class_rev = PCI_ID_ANY,
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.name = "Qemu PCI test device",
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.probe = qemu_pci_test_probe
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};
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