From cc0efb57ebf04e066a57aa975c8a38884e603123 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 15 Jul 2013 13:03:09 +1000 Subject: [PATCH] powerpc/powernv: Update opal.h to add new LPC and XSCOM functions Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 23 +++++++++++++++++++ .../powerpc/platforms/powernv/opal-wrappers.S | 4 ++++ 2 files changed, 27 insertions(+) diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 029fe85722aa..c701e2be73b1 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -124,6 +124,10 @@ extern int opal_enter_rtas(struct rtas_args *args, #define OPAL_PCI_POLL 62 #define OPAL_PCI_MSI_EOI 63 #define OPAL_PCI_GET_PHB_DIAG_DATA2 64 +#define OPAL_XSCOM_READ 65 +#define OPAL_XSCOM_WRITE 66 +#define OPAL_LPC_READ 67 +#define OPAL_LPC_WRITE 68 #ifndef __ASSEMBLY__ @@ -337,6 +341,17 @@ enum OpalEpowStatus { OPAL_EPOW_OVER_INTERNAL_TEMP = 3 }; +/* + * Address cycle types for LPC accesses. These also correspond + * to the content of the first cell of the "reg" property for + * device nodes on the LPC bus + */ +enum OpalLPCAddressType { + OPAL_LPC_MEM = 0, + OPAL_LPC_IO = 1, + OPAL_LPC_FW = 2, +}; + struct opal_machine_check_event { enum OpalMCE_Version version:8; /* 0x00 */ uint8_t in_use; /* 0x01 */ @@ -632,6 +647,14 @@ int64_t opal_pci_next_error(uint64_t phb_id, uint64_t *first_frozen_pe, uint16_t *pci_error_type, uint16_t *severity); int64_t opal_pci_poll(uint64_t phb_id); +int64_t opal_xscom_read(uint32_t gcid, uint32_t pcb_addr, uint64_t *val); +int64_t opal_xscom_write(uint32_t gcid, uint32_t pcb_addr, uint64_t val); + +int64_t opal_lpc_write(uint32_t chip_id, enum OpalLPCAddressType addr_type, + uint32_t addr, uint32_t data, uint32_t sz); +int64_t opal_lpc_read(uint32_t chip_id, enum OpalLPCAddressType addr_type, + uint32_t addr, uint32_t *data, uint32_t sz); + /* Internal functions */ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data); diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S index e88863ffb135..42c06fba3994 100644 --- a/arch/powerpc/platforms/powernv/opal-wrappers.S +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S @@ -111,3 +111,7 @@ OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR); OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL); OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI); OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2); +OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ); +OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE); +OPAL_CALL(opal_lpc_read, OPAL_LPC_READ); +OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE); -- 2.20.1