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hv: PTM: Create virtual root port

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Create virtual root port through add_vdev hypercall. add_vdev
identifies the virtual device to add by its vendor id and device id, then
call the corresponding function to create virtual device.

	-create_vrp(): Find the right virtual root port to create
by its secondary bus number, then initialize the virtual root port.
And finally initialize PTM related configurations.

	-destroy_vrp(): nothing to destroy

Tracked-On: #5915
Signed-off-by: Rong Liu <rong.l.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Acked-by: Jason Chen <jason.cj.chen@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Rong Liu
2021-05-05 23:38:22 +00:00
committed by wenlingz
parent d57bf51c89
commit 3db4491e1c
5 changed files with 95 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
hypervisor/dm/vpci/vroot_port.c
View File

@@ -5,8 +5,10 @@
*
*/
#include <logmsg.h>
#include <pci.h>
#include <asm/guest/vm.h>
#include <acrn_common.h>
#include "vroot_port.h"
#include "vpci_priv.h"
@@ -14,11 +16,11 @@
#define PCIE_CAP_VPOS 0x40 /* pcie capability reg position */
#define PTM_CAP_VPOS PCI_ECAP_BASE_PTR /* ptm capability reg postion */
static void init_vroot_port(struct pci_vdev *vdev)
static void init_vrp(struct pci_vdev *vdev)
{
/* vendor and device */
pci_vdev_write_vcfg(vdev, PCIR_VENDOR, 2U, VROOT_PORT_VENDOR);
pci_vdev_write_vcfg(vdev, PCIR_DEVICE, 2U, VROOT_PORT_DEVICE);
pci_vdev_write_vcfg(vdev, PCIR_VENDOR, 2U, VRP_VENDOR);
pci_vdev_write_vcfg(vdev, PCIR_DEVICE, 2U, VRP_DEVICE);
/* status register */
pci_vdev_write_vcfg(vdev, PCIR_STATUS, 2U, PCIM_STATUS_CAPPRESENT);
@@ -46,13 +48,13 @@ static void init_vroot_port(struct pci_vdev *vdev)
vdev->user = vdev;
}
static void deinit_vroot_port(__unused struct pci_vdev *vdev)
static void deinit_vrp(__unused struct pci_vdev *vdev)
{
vdev->parent_user = NULL;
vdev->user = NULL;
}
static int32_t read_vroot_port_cfg(const struct pci_vdev *vdev, uint32_t offset,
static int32_t read_vrp_cfg(const struct pci_vdev *vdev, uint32_t offset,
uint32_t bytes, uint32_t *val)
{
*val = pci_vdev_read_vcfg(vdev, offset, bytes);
@@ -60,7 +62,7 @@ static int32_t read_vroot_port_cfg(const struct pci_vdev *vdev, uint32_t offset,
return 0;
}
static int32_t write_vroot_port_cfg(__unused struct pci_vdev *vdev, __unused uint32_t offset,
static int32_t write_vrp_cfg(__unused struct pci_vdev *vdev, __unused uint32_t offset,
__unused uint32_t bytes, __unused uint32_t val)
{
pci_vdev_write_vcfg(vdev, offset, bytes, val);
@@ -68,9 +70,71 @@ static int32_t write_vroot_port_cfg(__unused struct pci_vdev *vdev, __unused uin
return 0;
}
const struct pci_vdev_ops vroot_port_ops = {
.init_vdev = init_vroot_port,
.deinit_vdev = deinit_vroot_port,
.write_vdev_cfg = write_vroot_port_cfg,
.read_vdev_cfg = read_vroot_port_cfg,
/*
* @pre vdev != NULL
* @pre vrp_config != NULL
*/
static void init_ptm(struct pci_vdev *vdev, struct vrp_config *vrp_config)
{
/* ptm capability register */
if (vrp_config->ptm_capable)
{
pci_vdev_write_vcfg(vdev, PTM_CAP_VPOS, PCI_PTM_CAP_LEN, 0x0001001f);
pci_vdev_write_vcfg(vdev, PTM_CAP_VPOS + PCIR_PTM_CAP, PCI_PTM_CAP_LEN, 0x406);
pci_vdev_write_vcfg(vdev, PTM_CAP_VPOS + PCIR_PTM_CTRL, PCI_PTM_CAP_LEN, 0x3);
}
/* emulate bus numbers */
pci_vdev_write_vcfg(vdev, PCIR_PRIBUS_1, 1U, 0x00); /* virtual root port always connects to host bridge */
pci_vdev_write_vcfg(vdev, PCIR_SECBUS_1, 1U, vrp_config->secondary_bus);
pci_vdev_write_vcfg(vdev, PCIR_SUBBUS_1, 1U, vrp_config->subordinate_bus);
}
int32_t create_vrp(struct acrn_vm *vm, struct acrn_emul_dev *dev)
{
struct acrn_vm_config *vm_config = get_vm_config(vm->vm_id);
struct acrn_vm_pci_dev_config *dev_config = NULL;
struct pci_vdev *vdev;
struct vrp_config *vrp_config;
int i;
vrp_config = (struct vrp_config*)dev->args;
pr_acrnlog("%s: virtual root port phy_bdf=0x%x, vbdf=0x%x, vendor_id=0x%x, dev_id=0x%x,\
primary_bus=0x%x, secondary_bus=0x%x, sub_bus=0x%x.\n",
__func__, vrp_config->phy_bdf, dev->slot,
dev->dev_id.fields.vendor_id, dev->dev_id.fields.device_id,
vrp_config->primary_bus, vrp_config->secondary_bus, vrp_config->subordinate_bus);
for (i = 0U; i < vm_config->pci_dev_num; i++) {
dev_config = &vm_config->pci_devs[i];
if (dev_config->vrp_sec_bus == vrp_config->secondary_bus) {
dev_config->vbdf.value = dev->slot;
dev_config->pbdf.value = vrp_config->phy_bdf;
dev_config->vdev_ops = &vrp_ops;
vdev = vpci_init_vdev(&vm->vpci, dev_config, NULL);
init_ptm(vdev, vrp_config);
break;
}
}
return 0;
}
int32_t destroy_vrp(__unused struct pci_vdev *vdev)
{
return 0;
}
const struct pci_vdev_ops vrp_ops = {
.init_vdev = init_vrp,
.deinit_vdev = deinit_vrp,
.write_vdev_cfg = write_vrp_cfg,
.read_vdev_cfg = read_vrp_cfg,
};