Message ID | 4b2b04ab1dbc1a5c52bf54c399cdb6cf454183ea.1632307952.git.rahul.singh@arm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show |
Series | PCI devices passthrough on Arm | expand |
On Wed, 22 Sep 2021, Rahul Singh wrote: > From: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> > > Add support for Xilinx ZynqMP PCI host controller to map the PCI config > space to the XEN memory. > > Patch helps to understand how the generic infrastructure for PCI > host-bridge discovery will be used for future references. > > Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> > --- > Change on v2: > - Add more info in commit msg > --- > xen/arch/arm/pci/Makefile | 1 + > xen/arch/arm/pci/pci-host-zynqmp.c | 58 ++++++++++++++++++++++++++++++ > 2 files changed, 59 insertions(+) > create mode 100644 xen/arch/arm/pci/pci-host-zynqmp.c > > diff --git a/xen/arch/arm/pci/Makefile b/xen/arch/arm/pci/Makefile > index e86f2b46fd..0572c68bba 100644 > --- a/xen/arch/arm/pci/Makefile > +++ b/xen/arch/arm/pci/Makefile > @@ -4,3 +4,4 @@ obj-y += pci.o > obj-y += pci-host-generic.o > obj-y += pci-host-common.o > obj-y += ecam.o > +obj-y += pci-host-zynqmp.o > diff --git a/xen/arch/arm/pci/pci-host-zynqmp.c b/xen/arch/arm/pci/pci-host-zynqmp.c > new file mode 100644 > index 0000000000..c27b4ea9f0 > --- /dev/null > +++ b/xen/arch/arm/pci/pci-host-zynqmp.c > @@ -0,0 +1,58 @@ > +/* > + * Based on Linux drivers/pci/controller/pci-host-common.c > + * Based on Linux drivers/pci/controller/pci-host-generic.c > + * Based on xen/arch/arm/pci/pci-host-generic.c > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + * > + * 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 <http://www.gnu.org/licenses/>. > + */ > + > +#include <asm/device.h> > +#include <xen/pci.h> > +#include <asm/pci.h> > + > +int nwl_cfg_reg_index(struct dt_device_node *np) static > +{ > + return dt_property_match_string(np, "reg-names", "cfg"); > +} > + > +/* ECAM ops */ > +const struct pci_ecam_ops nwl_pcie_ops = { > + .bus_shift = 20, > + .cfg_reg_index = nwl_cfg_reg_index, > + .pci_ops = { > + .map_bus = pci_ecam_map_bus, > + .read = pci_generic_config_read, > + .write = pci_generic_config_write, > + } > +}; > + > +static const struct dt_device_match nwl_pcie_dt_match[] = { > + { .compatible = "xlnx,nwl-pcie-2.11", > + .data = &nwl_pcie_ops }, > + { }, > +}; > + > +DT_DEVICE_START(pci_gen, "PCI HOST ZYNQMP", DEVICE_PCI) > +.dt_match = nwl_pcie_dt_match, > +.init = pci_host_common_probe, > +DT_DEVICE_END > + > +/* > + * Local variables: > + * mode: C > + * c-file-style: "BSD" > + * c-basic-offset: 4 > + * tab-width: 4 > + * indent-tabs-mode: nil > + * End: > + */ > -- > 2.17.1 >
Hi Stefano, > On 23 Sep 2021, at 3:11 am, Stefano Stabellini <sstabellini@kernel.org> wrote: > > On Wed, 22 Sep 2021, Rahul Singh wrote: >> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> >> >> Add support for Xilinx ZynqMP PCI host controller to map the PCI config >> space to the XEN memory. >> >> Patch helps to understand how the generic infrastructure for PCI >> host-bridge discovery will be used for future references. >> >> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> >> --- >> Change on v2: >> - Add more info in commit msg >> --- >> xen/arch/arm/pci/Makefile | 1 + >> xen/arch/arm/pci/pci-host-zynqmp.c | 58 ++++++++++++++++++++++++++++++ >> 2 files changed, 59 insertions(+) >> create mode 100644 xen/arch/arm/pci/pci-host-zynqmp.c >> >> diff --git a/xen/arch/arm/pci/Makefile b/xen/arch/arm/pci/Makefile >> index e86f2b46fd..0572c68bba 100644 >> --- a/xen/arch/arm/pci/Makefile >> +++ b/xen/arch/arm/pci/Makefile >> @@ -4,3 +4,4 @@ obj-y += pci.o >> obj-y += pci-host-generic.o >> obj-y += pci-host-common.o >> obj-y += ecam.o >> +obj-y += pci-host-zynqmp.o >> diff --git a/xen/arch/arm/pci/pci-host-zynqmp.c b/xen/arch/arm/pci/pci-host-zynqmp.c >> new file mode 100644 >> index 0000000000..c27b4ea9f0 >> --- /dev/null >> +++ b/xen/arch/arm/pci/pci-host-zynqmp.c >> @@ -0,0 +1,58 @@ >> +/* >> + * Based on Linux drivers/pci/controller/pci-host-common.c >> + * Based on Linux drivers/pci/controller/pci-host-generic.c >> + * Based on xen/arch/arm/pci/pci-host-generic.c >> + * >> + * This program is free software; you can redistribute it and/or modify >> + * it under the terms of the GNU General Public License version 2 as >> + * published by the Free Software Foundation. >> + * >> + * 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 <http://www.gnu.org/licenses/>. >> + */ >> + >> +#include <asm/device.h> >> +#include <xen/pci.h> >> +#include <asm/pci.h> >> + >> +int nwl_cfg_reg_index(struct dt_device_node *np) > > static > Ack. Regards, Rahul
diff --git a/xen/arch/arm/pci/Makefile b/xen/arch/arm/pci/Makefile index e86f2b46fd..0572c68bba 100644 --- a/xen/arch/arm/pci/Makefile +++ b/xen/arch/arm/pci/Makefile @@ -4,3 +4,4 @@ obj-y += pci.o obj-y += pci-host-generic.o obj-y += pci-host-common.o obj-y += ecam.o +obj-y += pci-host-zynqmp.o diff --git a/xen/arch/arm/pci/pci-host-zynqmp.c b/xen/arch/arm/pci/pci-host-zynqmp.c new file mode 100644 index 0000000000..c27b4ea9f0 --- /dev/null +++ b/xen/arch/arm/pci/pci-host-zynqmp.c @@ -0,0 +1,58 @@ +/* + * Based on Linux drivers/pci/controller/pci-host-common.c + * Based on Linux drivers/pci/controller/pci-host-generic.c + * Based on xen/arch/arm/pci/pci-host-generic.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 <http://www.gnu.org/licenses/>. + */ + +#include <asm/device.h> +#include <xen/pci.h> +#include <asm/pci.h> + +int nwl_cfg_reg_index(struct dt_device_node *np) +{ + return dt_property_match_string(np, "reg-names", "cfg"); +} + +/* ECAM ops */ +const struct pci_ecam_ops nwl_pcie_ops = { + .bus_shift = 20, + .cfg_reg_index = nwl_cfg_reg_index, + .pci_ops = { + .map_bus = pci_ecam_map_bus, + .read = pci_generic_config_read, + .write = pci_generic_config_write, + } +}; + +static const struct dt_device_match nwl_pcie_dt_match[] = { + { .compatible = "xlnx,nwl-pcie-2.11", + .data = &nwl_pcie_ops }, + { }, +}; + +DT_DEVICE_START(pci_gen, "PCI HOST ZYNQMP", DEVICE_PCI) +.dt_match = nwl_pcie_dt_match, +.init = pci_host_common_probe, +DT_DEVICE_END + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */