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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-06-06 08:59:20 +1000 |
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committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-06-06 20:49:05 +1000 |
commit | 5bbbb398544ae2869d1c1818280cd97f537d8cb9 (patch) | |
tree | 1c4110f1f39ddfb668aab86269fc210a10b8b760 /core/pci.c | |
parent | 94920c4946b5a9c33c063df22db0864fab2b5efa (diff) | |
download | skiboot-5bbbb398544ae2869d1c1818280cd97f537d8cb9.zip skiboot-5bbbb398544ae2869d1c1818280cd97f537d8cb9.tar.gz skiboot-5bbbb398544ae2869d1c1818280cd97f537d8cb9.tar.bz2 |
pci: Make handling of config filters generic
Move phb3_pcicfg_filter() to pci.c, rename it to pci_handle_cfg_filters()
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'core/pci.c')
-rw-r--r-- | core/pci.c | 24 |
1 files changed, 23 insertions, 1 deletions
@@ -1768,11 +1768,33 @@ struct pci_cfg_reg_filter *pci_find_cfg_reg_filter(struct pci_device *pd, return NULL; } -bool pci_device_has_cfg_reg_filters(struct phb *phb, uint16_t bdfn) +static bool pci_device_has_cfg_reg_filters(struct phb *phb, uint16_t bdfn) { return bitmap_tst_bit(*phb->filter_map, bdfn); } +int64_t pci_handle_cfg_filters(struct phb *phb, uint32_t bdfn, + uint32_t offset, uint32_t len, + uint32_t *data, bool write) +{ + struct pci_device *pd; + struct pci_cfg_reg_filter *pcrf; + uint32_t flags; + + if (!pci_device_has_cfg_reg_filters(phb, bdfn)) + return OPAL_PARTIAL; + pd = pci_find_dev(phb, bdfn); + pcrf = pd ? pci_find_cfg_reg_filter(pd, offset, len) : NULL; + if (!pcrf || !pcrf->func) + return OPAL_PARTIAL; + + flags = write ? PCI_REG_FLAG_WRITE : PCI_REG_FLAG_READ; + if ((pcrf->flags & flags) != flags) + return OPAL_PARTIAL; + + return pcrf->func(pd, pcrf, offset, len, data, write); +} + struct pci_cfg_reg_filter *pci_add_cfg_reg_filter(struct pci_device *pd, uint32_t start, uint32_t len, uint32_t flags, |