From 95cb8ff68851ed0d249fb8a1d9657987cd844e08 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Thu, 18 Apr 2024 12:04:24 -0400 Subject: PCI: Add PCIE_MSG_CODE_ASSERT_INTx message macros MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add "Message Routing" and "INTx Mechanism Messages" macros to enable a PCIe driver to send messages for INTx Interrupt Signaling. Values from PCIe r6.1, sec 2.2.8 and 2.2.8.1. Link: https://lore.kernel.org/linux-pci/20240418-pme_msg-v8-1-a54265c39742@nxp.com Signed-off-by: Yoshihiro Shimoda Signed-off-by: Frank Li Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Reviewed-by: Manivannan Sadhasivam Reviewed-by: Serge Semin --- drivers/pci/pci.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers/pci/pci.h') diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index fd44565c4756..95c95d981241 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -22,6 +22,24 @@ */ #define PCIE_PME_TO_L2_TIMEOUT_US 10000 +/* Message Routing (r[2:0]); PCIe r6.0, sec 2.2.8 */ +#define PCIE_MSG_TYPE_R_RC 0 +#define PCIE_MSG_TYPE_R_ADDR 1 +#define PCIE_MSG_TYPE_R_ID 2 +#define PCIE_MSG_TYPE_R_BC 3 +#define PCIE_MSG_TYPE_R_LOCAL 4 +#define PCIE_MSG_TYPE_R_GATHER 5 + +/* INTx Mechanism Messages; PCIe r6.0, sec 2.2.8.1 */ +#define PCIE_MSG_CODE_ASSERT_INTA 0x20 +#define PCIE_MSG_CODE_ASSERT_INTB 0x21 +#define PCIE_MSG_CODE_ASSERT_INTC 0x22 +#define PCIE_MSG_CODE_ASSERT_INTD 0x23 +#define PCIE_MSG_CODE_DEASSERT_INTA 0x24 +#define PCIE_MSG_CODE_DEASSERT_INTB 0x25 +#define PCIE_MSG_CODE_DEASSERT_INTC 0x26 +#define PCIE_MSG_CODE_DEASSERT_INTD 0x27 + extern const unsigned char pcie_link_speed[]; extern bool pci_early_dump; -- cgit v1.2.3