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PCI: Add PCIE_MSG_CODE_ASSERT_INTx message macros

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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 <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
This commit is contained in:
Yoshihiro Shimoda 2024-04-18 12:04:24 -04:00 committed by Bjorn Helgaas
parent cd02e4b684
commit 95cb8ff688
1 changed files with 18 additions and 0 deletions
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18
drivers/pci/pci.h
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@ -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;