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| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2012-11-29 14:35:47 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-11-30 17:47:25 +0100 |
| commit | 7441b0627e2251370902305a204e1330a696ca04 (patch) | |
| tree | d3a36466a8517f8b889b6f0037f15280e33302d4 /arch/s390/include/asm/pci.h | |
| parent | cbc0dd1f856b52b59c2c73a477b6cb210c8c66ad (diff) | |
| download | op-kernel-dev-7441b0627e2251370902305a204e1330a696ca04.zip op-kernel-dev-7441b0627e2251370902305a204e1330a696ca04.tar.gz | |
s390/pci: PCI hotplug support via SCLP
Add SCLP PCI configure/deconfigure and implement a PCI hotplug
controller (s390_pci_hpc). The hotplug controller creates a slot
for every PCI function in stand-by or configured state. The PCI
functions are named after the PCI function ID (fid). By writing to
the power attribute in /sys/bus/pci/slots/<fid>/power the PCI function
is moved to stand-by or configured state. If moved to the configured
state the device is automatically scanned by the s390 PCI layer.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pci.h')
| -rw-r--r-- | arch/s390/include/asm/pci.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index d3597dc..48ce434 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -95,6 +95,11 @@ struct zpci_dev { enum pci_bus_speed max_bus_speed; }; +struct pci_hp_callback_ops { + int (*create_slot) (struct zpci_dev *zdev); + void (*remove_slot) (struct zpci_dev *zdev); +}; + static inline bool zdev_enabled(struct zpci_dev *zdev) { return (zdev->fh & (1UL << 31)) ? true : false; @@ -140,4 +145,10 @@ bool zpci_fid_present(u32); int zpci_dma_init(void); void zpci_dma_exit(void); +/* Hotplug */ +extern struct mutex zpci_list_lock; +extern struct list_head zpci_list; +extern struct pci_hp_callback_ops hotplug_ops; +extern unsigned int pci_probe; + #endif |
