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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 12:36:38 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 12:36:38 -0700 |
commit | 847d4287a0c6709fd1ce24002b96d404a6da8b5b (patch) | |
tree | d6725cb3381730e2ae2864bc5b1f417d5cb94096 /arch/s390/pci/pci.c | |
parent | Merge tag 'powerpc-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (diff) | |
parent | s390/uaccess: fix indentation (diff) | |
download | linux-dev-847d4287a0c6709fd1ce24002b96d404a6da8b5b.tar.xz linux-dev-847d4287a0c6709fd1ce24002b96d404a6da8b5b.zip |
Merge tag 's390-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Remove address space overrides using set_fs()
- Convert to generic vDSO
- Convert to generic page table dumper
- Add ARCH_HAS_DEBUG_WX support
- Add leap seconds handling support
- Add NVMe firmware-assisted kernel dump support
- Extend NVMe boot support with memory clearing control and addition of
kernel parameters
- AP bus and zcrypt api code rework. Add adapter configure/deconfigure
interface. Extend debug features. Add failure injection support
- Add ECC secure private keys support
- Add KASan support for running protected virtualization host with
4-level paging
- Utilize destroy page ultravisor call to speed up secure guests
shutdown
- Implement ioremap_wc() and ioremap_prot() with MIO in PCI code
- Various checksum improvements
- Other small various fixes and improvements all over the code
* tag 's390-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (85 commits)
s390/uaccess: fix indentation
s390/uaccess: add default cases for __put_user_fn()/__get_user_fn()
s390/zcrypt: fix wrong format specifications
s390/kprobes: move insn_page to text segment
s390/sie: fix typo in SIGP code description
s390/lib: fix kernel doc for memcmp()
s390/zcrypt: Introduce Failure Injection feature
s390/zcrypt: move ap_msg param one level up the call chain
s390/ap/zcrypt: revisit ap and zcrypt error handling
s390/ap: Support AP card SCLP config and deconfig operations
s390/sclp: Add support for SCLP AP adapter config/deconfig
s390/ap: add card/queue deconfig state
s390/ap: add error response code field for ap queue devices
s390/ap: split ap queue state machine state from device state
s390/zcrypt: New config switch CONFIG_ZCRYPT_DEBUG
s390/zcrypt: introduce msg tracking in zcrypt functions
s390/startup: correct early pgm check info formatting
s390: remove orphaned extern variables declarations
s390/kasan: make sure int handler always run with DAT on
s390/ipl: add support to control memory clearing for nvme re-IPL
...
Diffstat (limited to 'arch/s390/pci/pci.c')
-rw-r--r-- | arch/s390/pci/pci.c | 59 |
1 files changed, 31 insertions, 28 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 1804230dd8d8..570016ae8bcd 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -37,6 +37,7 @@ #include <asm/pci_dma.h> #include "pci_bus.h" +#include "pci_iov.h" /* list of all detected zpci devices */ static LIST_HEAD(zpci_list); @@ -226,7 +227,7 @@ void __iowrite64_copy(void __iomem *to, const void *from, size_t count) zpci_memcpy_toio(to, from, count); } -void __iomem *ioremap(phys_addr_t addr, size_t size) +static void __iomem *__ioremap(phys_addr_t addr, size_t size, pgprot_t prot) { unsigned long offset, vaddr; struct vm_struct *area; @@ -247,14 +248,37 @@ void __iomem *ioremap(phys_addr_t addr, size_t size) return NULL; vaddr = (unsigned long) area->addr; - if (ioremap_page_range(vaddr, vaddr + size, addr, PAGE_KERNEL)) { + if (ioremap_page_range(vaddr, vaddr + size, addr, prot)) { free_vm_area(area); return NULL; } return (void __iomem *) ((unsigned long) area->addr + offset); } + +void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot) +{ + return __ioremap(addr, size, __pgprot(prot)); +} +EXPORT_SYMBOL(ioremap_prot); + +void __iomem *ioremap(phys_addr_t addr, size_t size) +{ + return __ioremap(addr, size, PAGE_KERNEL); +} EXPORT_SYMBOL(ioremap); +void __iomem *ioremap_wc(phys_addr_t addr, size_t size) +{ + return __ioremap(addr, size, pgprot_writecombine(PAGE_KERNEL)); +} +EXPORT_SYMBOL(ioremap_wc); + +void __iomem *ioremap_wt(phys_addr_t addr, size_t size) +{ + return __ioremap(addr, size, pgprot_writethrough(PAGE_KERNEL)); +} +EXPORT_SYMBOL(ioremap_wt); + void iounmap(volatile void __iomem *addr) { if (static_branch_likely(&have_mio)) @@ -390,15 +414,6 @@ static struct pci_ops pci_root_ops = { .write = pci_write, }; -#ifdef CONFIG_PCI_IOV -static struct resource iov_res = { - .name = "PCI IOV res", - .start = 0, - .end = -1, - .flags = IORESOURCE_MEM, -}; -#endif - static void zpci_map_resources(struct pci_dev *pdev) { struct zpci_dev *zdev = to_zpci(pdev); @@ -419,16 +434,7 @@ static void zpci_map_resources(struct pci_dev *pdev) pdev->resource[i].end = pdev->resource[i].start + len - 1; } -#ifdef CONFIG_PCI_IOV - for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { - int bar = i + PCI_IOV_RESOURCES; - - len = pci_resource_len(pdev, bar); - if (!len) - continue; - pdev->resource[bar].parent = &iov_res; - } -#endif + zpci_iov_map_resources(pdev); } static void zpci_unmap_resources(struct pci_dev *pdev) @@ -684,7 +690,7 @@ void zpci_remove_device(struct zpci_dev *zdev) pdev = pci_get_slot(zbus->bus, zdev->devfn); if (pdev) { if (pdev->is_virtfn) - return zpci_remove_virtfn(pdev, zdev->vfn); + return zpci_iov_remove_virtfn(pdev, zdev->vfn); pci_stop_and_remove_bus_device_locked(pdev); } } @@ -788,6 +794,9 @@ static int zpci_mem_init(void) if (!zpci_iomap_bitmap) goto error_iomap_bitmap; + if (static_branch_likely(&have_mio)) + clp_setup_writeback_mio(); + return 0; error_iomap_bitmap: kfree(zpci_iomap_start); @@ -885,9 +894,3 @@ out: return rc; } subsys_initcall_sync(pci_base_init); - -void zpci_rescan(void) -{ - if (zpci_is_enabled()) - clp_rescan_pci_devices_simple(NULL); -} |