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authorKishon Vijay Abraham I <kishon@ti.com>2020-02-25 13:47:02 +0530
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2020-04-02 17:57:10 +0100
commit6f5e193bfb55963ce5f4f68cc927f371ddb0913b (patch)
treedb006ec7bb16dc81c37517c8f011a0fb025bf9f5 /include/linux/pci-epf.h
parent83153d9f36e24978c6211d246cb6f532bf54e5dc (diff)
PCI: dwc: Fix dw_pcie_ep_raise_msix_irq() to get correct MSI-X table address
commit beb4641a787d ("PCI: dwc: Add MSI-X callbacks handler"), in order to raise MSI-X interrupt, obtained MSIX table address from Base Address Register (BAR). However BAR only holds PCI address programmed by the host whereas the MSI-X table should be in the local memory. Store the MSI-X table address (virtual address) as part of ->set_bar() callback and use that to get the message address and message data here. Fixes: beb4641a787d ("PCI: dwc: Add MSI-X callbacks handler") Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Diffstat (limited to 'include/linux/pci-epf.h')
-rw-r--r--include/linux/pci-epf.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index 0c628e30c582..6644ff3b0702 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -94,10 +94,12 @@ struct pci_epf_driver {
/**
* struct pci_epf_bar - represents the BAR of EPF device
* @phys_addr: physical address that should be mapped to the BAR
+ * @addr: virtual address corresponding to the @phys_addr
* @size: the size of the address space present in BAR
*/
struct pci_epf_bar {
dma_addr_t phys_addr;
+ void *addr;
size_t size;
enum pci_barno barno;
int flags;
@@ -134,6 +136,19 @@ struct pci_epf {
struct mutex lock;
};
+/**
+ * struct pci_epf_msix_tbl - represents the MSIX table entry structure
+ * @msg_addr: Writes to this address will trigger MSIX interrupt in host
+ * @msg_data: Data that should be written to @msg_addr to trigger MSIX interrupt
+ * @vector_ctrl: Identifies if the function is prohibited from sending a message
+ * using this MSIX table entry
+ */
+struct pci_epf_msix_tbl {
+ u64 msg_addr;
+ u32 msg_data;
+ u32 vector_ctrl;
+};
+
#define to_pci_epf(epf_dev) container_of((epf_dev), struct pci_epf, dev)
#define pci_epf_register_driver(driver) \