Author: manu Date: Thu May 7 17:00:51 2020 New Revision: 360787 URL: https://svnweb.freebsd.org/changeset/base/360787
Log: linuxkpi: Add pci_iomap and pci_iounmap Those function are use to map/unmap io region of a pci device. Different resource can be mapped depending on the bar so use a tailq to store them all. Sponsored-by: The FreeBSD Foundation Reviewed by: emaste, hselasky Differential Revision: https://reviews.freebsd.org/D24696 Modified: head/sys/compat/linuxkpi/common/include/linux/pci.h head/sys/compat/linuxkpi/common/src/linux_pci.c Modified: head/sys/compat/linuxkpi/common/include/linux/pci.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/pci.h Thu May 7 16:56:18 2020 (r360786) +++ head/sys/compat/linuxkpi/common/include/linux/pci.h Thu May 7 17:00:51 2020 (r360787) @@ -222,6 +222,13 @@ extern spinlock_t pci_lock; #define __devexit_p(x) x +struct pci_mmio_region { + TAILQ_ENTRY(pci_mmio_region) next; + struct resource *res; + int rid; + int type; +}; + struct pci_dev { struct device dev; struct list_head links; @@ -236,6 +243,8 @@ struct pci_dev { uint32_t class; uint8_t revision; bool msi_enabled; + + TAILQ_HEAD(, pci_mmio_region) mmio; }; static inline struct resource_list_entry * @@ -657,6 +666,41 @@ static inline int pci_enable_sriov(struct pci_dev *dev } static inline void pci_disable_sriov(struct pci_dev *dev) { +} + +static inline void * +pci_iomap(struct pci_dev *dev, int mmio_bar, int mmio_size __unused) +{ + struct pci_mmio_region *mmio; + + mmio = malloc(sizeof(*mmio), M_DEVBUF, M_WAITOK | M_ZERO); + mmio->rid = PCIR_BAR(mmio_bar); + mmio->type = pci_resource_type(dev, mmio_bar); + mmio->res = bus_alloc_resource_any(dev->dev.bsddev, mmio->type, + &mmio->rid, RF_ACTIVE); + if (mmio->res == NULL) { + free(mmio, M_DEVBUF); + return (NULL); + } + TAILQ_INSERT_TAIL(&dev->mmio, mmio, next); + + return ((void *)rman_get_bushandle(mmio->res)); +} + +static inline void +pci_iounmap(struct pci_dev *dev, void *res) +{ + struct pci_mmio_region *mmio, *p; + + TAILQ_FOREACH_SAFE(mmio, &dev->mmio, next, p) { + if (res != (void *)rman_get_bushandle(mmio->res)) + continue; + bus_release_resource(dev->dev.bsddev, + mmio->type, mmio->rid, mmio->res); + TAILQ_REMOVE(&dev->mmio, mmio, next); + free(mmio, M_DEVBUF); + return; + } } #define DEFINE_PCI_DEVICE_TABLE(_table) \ Modified: head/sys/compat/linuxkpi/common/src/linux_pci.c ============================================================================== --- head/sys/compat/linuxkpi/common/src/linux_pci.c Thu May 7 16:56:18 2020 (r360786) +++ head/sys/compat/linuxkpi/common/src/linux_pci.c Thu May 7 17:00:51 2020 (r360787) @@ -271,6 +271,7 @@ linux_pci_attach_device(device_t dev, struct pci_drive if (error) goto out_dma_init; + TAILQ_INIT(&pdev->mmio); pbus = malloc(sizeof(*pbus), M_DEVBUF, M_WAITOK | M_ZERO); pbus->self = pdev; pbus->number = pci_get_bus(dev); _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
