/* Copyright 2013-2014 IBM Corp. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or * implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * IBM System P PSI (Processor Service Interface) */ #ifndef __PSI_H #define __PSI_H #include /* * PSI Host Bridge Registers (MMIO) * * The PSI interface is the bridge to the FPS, it has its own * registers. The FSP registers appear at an offset within the * aperture defined by the PSI_FSPBAR */ /* Base address of the PSI MMIO space and LSB is the enable/valid bit */ #define PSIHB_BBAR 0x00 /* FSP MMIO region -- this is where the mbx regs are (offset defined below) */ #define PSIHB_FSPBAR 0x08 /* FSP MMIO region mask register -- determines size of region */ #define PSIHB_FSPMMR 0x10 /* TCE address register */ #define PSIHB_TAR 0x18 #define PSIHB_TAR_8K_ENTRIES 0 #define PSIHB_TAR_16K_ENTRIES 1 #define PSIHB_TAR_256K_ENTRIES 2 /* P8 only */ #define PSIHB_TAR_512K_ENTRIES 4 /* P8 only */ /* PSI Host Bridge Control Register * * note: TCE_ENABLE moved to the new PSIHB_PHBSCR on P8 but is * the same bit position */ #define PSIHB_CR 0x20 #define PSIHB_CR_FSP_CMD_ENABLE PPC_BIT(0) #define PSIHB_CR_FSP_MMIO_ENABLE PPC_BIT(1) #define PSIHB_CR_TCE_ENABLE PPC_BIT(2) /* P7 only */ #define PSIHB_CR_FSP_IRQ_ENABLE PPC_BIT(3) #define PSIHB_CR_FSP_ERR_RSP_ENABLE PPC_BIT(4) #define PSIHB_CR_PSI_LINK_ENABLE PPC_BIT(5) #define PSIHB_CR_FSP_RESET PPC_BIT(6) #define PSIHB_CR_PSIHB_RESET PPC_BIT(7) #define PSIHB_CR_PSI_IRQ PPC_BIT(16) /* PSIHB interrupt */ #define PSIHB_CR_FSP_IRQ PPC_BIT(17) /* FSP interrupt */ #define PSIHB_CR_FSP_LINK_ACTIVE PPC_BIT(18) /* FSP link active */ /* Error conditions in the GXHB */ #define PSIHB_CR_PSI_ERROR PPC_BIT(32) /* PSI error */ #define PSIHB_CR_PSI_LINK_INACTIVE PPC_BIT(33) /* Link inactive */ #define PSIHB_CR_FSP_ACK_TIMEOUT PPC_BIT(34) /* FSP ack timeout */ #define PSIHB_CR_MMIO_LOAD_TIMEOUT PPC_BIT(35) /* MMIO load timeout */ #define PSIHB_CR_MMIO_LENGTH_ERROR PPC_BIT(36) /* MMIO length error */ #define PSIHB_CR_MMIO_ADDRESS_ERROR PPC_BIT(37) /* MMIO address error */ #define PSIHB_CR_MMIO_TYPE_ERROR PPC_BIT(38) /* MMIO type error */ #define PSIHB_CR_UE PPC_BIT(39) /* UE detected */ #define PSIHB_CR_PARITY_ERROR PPC_BIT(40) /* Parity error */ #define PSIHB_CR_SYNC_ERR_ALERT1 PPC_BIT(41) /* Sync alert 1 */ #define PSIHB_CR_SYNC_ERR_ALERT2 PPC_BIT(42) /* Sync alert 2 */ #define PSIHB_CR_FSP_COMMAND_ERROR PPC_BIT(43) /* FSP cmd error */ /* PSI Status / Error Mask Register */ #define PSIHB_SEMR 0x28 /* XIVR and BUID used for PSI interrupts on P7 */ #define PSIHB_XIVR 0x30 /* XIVR and BUID used for PSI interrupts on P8 */ #define PSIHB_XIVR_FSP 0x30 #define PSIHB_XIVR_OCC 0x60 #define PSIHB_XIVR_FSI 0x68 #define PSIHB_XIVR_LPC 0x70 #define PSIHB_XIVR_LOCAL_ERR 0x78 #define PSIHB_XIVR_HOST_ERR 0x80 #define PSIHB_ISRN 0x88 #define PSIHB_ISRN_COMP PPC_BITMASK(0,18) #define PSIHB_ISRN_IRQ_MUX PPC_BIT(28) #define PSIHB_ISRN_IRQ_RESET PPC_BIT(29) #define PSIHB_ISRN_DOWNSTREAM_EN PPC_BIT(30) #define PSIHB_ISRN_UPSTREAM_EN PPC_BIT(31) #define PSIHB_ISRN_MASK PPC_BITMASK(32,50) #define PSIHB_IRQ_STATUS 0x58 #define PSIHB_IRQ_STAT_OCC PPC_BIT(27) #define PSIHB_IRQ_STAT_FSI PPC_BIT(28) #define PSIHB_IRQ_STAT_LPC PPC_BIT(29) #define PSIHB_IRQ_STAT_LOCAL_ERR PPC_BIT(30) #define PSIHB_IRQ_STAT_HOST_ERR PPC_BIT(31) /* Secure version of CR for P8 (TCE enable bit) */ #define PSIHB_PHBSCR 0x90 /* * PSI Host Bridge Registers (XSCOM) */ #define PSIHB_XSCOM_P7_HBBAR 0x9 #define PSIHB_XSCOM_P7_HBBAR_EN PPC_BIT(28) #define PSIHB_XSCOM_P7_HBCSR 0xd #define PSIHB_XSCOM_P7_HBCSR_SET 0x11 #define PSIHB_XSCOM_P7_HBCSR_CLR 0x12 #define PSIHB_XSCOM_P7_HBSCR_FSP_IRQ PPC_BIT(13) #define PSIHB_XSCOM_P8_BASE 0xa #define PSIHB_XSCOM_P8_HBBAR_EN PPC_BIT(63) #define PSIHB_XSCOM_P8_HBCSR 0xe #define PSIHB_XSCOM_P8_HBCSR_SET 0x12 #define PSIHB_XSCOM_P8_HBCSR_CLR 0x13 #define PSIHB_XSCOM_P8_HBSCR_FSP_IRQ PPC_BIT(17) /* * Layout of the PSI DMA address space * * On P7, we instanciate a TCE table of 16K TCEs mapping 64M * * On P8, we use a larger mapping of 256K TCEs which provides * us with a 1G window in order to fit the trace buffers * * Currently we have: * * - 4x256K serial areas (each divided in 2: in and out buffers) * - 1M region for inbound buffers * - 2M region for generic data fetches */ #define PSI_DMA_SER0_BASE 0x00000000 #define PSI_DMA_SER0_SIZE 0x00040000 #define PSI_DMA_SER1_BASE 0x00040000 #define PSI_DMA_SER1_SIZE 0x00040000 #define PSI_DMA_SER2_BASE 0x00080000 #define PSI_DMA_SER2_SIZE 0x00040000 #define PSI_DMA_SER3_BASE 0x000c0000 #define PSI_DMA_SER3_SIZE 0x00040000 #define PSI_DMA_INBOUND_BUF 0x00100000 #define PSI_DMA_INBOUND_SIZE 0x00100000 #define PSI_DMA_FETCH 0x00200000 #define PSI_DMA_FETCH_SIZE 0x00800000 #define PSI_DMA_NVRAM_BODY 0x00a00000 #define PSI_DMA_NVRAM_BODY_SZ 0x00100000 #define PSI_DMA_NVRAM_TRIPL 0x00b00000 #define PSI_DMA_NVRAM_TRIPL_SZ 0x00001000 #define PSI_DMA_OP_PANEL_MISC 0x00b01000 #define PSI_DMA_OP_PANEL_SIZE 0x00001000 #define PSI_DMA_GET_SYSPARAM 0x00b02000 #define PSI_DMA_GET_SYSPARAM_SZ 0x00001000 #define PSI_DMA_SET_SYSPARAM 0x00b03000 #define PSI_DMA_SET_SYSPARAM_SZ 0x00001000 #define PSI_DMA_ERRLOG_READ_BUF 0x00b04000 #define PSI_DMA_ERRLOG_READ_BUF_SZ 0x00040000 #define PSI_DMA_ELOG_PANIC_WRITE_BUF 0x00b44000 #define PSI_DMA_ELOG_PANIC_WRITE_BUF_SZ 0x00010000 #define PSI_DMA_ERRLOG_WRITE_BUF 0x00b54000 #define PSI_DMA_ERRLOG_WRITE_BUF_SZ 0x00040000 #define PSI_DMA_ELOG_WR_TO_HOST_BUF 0x00b94000 #define PSI_DMA_ELOG_WR_TO_HOST_BUF_SZ 0x00010000 #define PSI_DMA_HBRT_LOG_WRITE_BUF 0x00ba4000 #define PSI_DMA_HBRT_LOG_WRITE_BUF_SZ 0x00001000 #define PSI_DMA_CODE_UPD 0x00c04000 #define PSI_DMA_CODE_UPD_SIZE 0x01001000 #define PSI_DMA_DUMP_DATA 0x01c05000 #define PSI_DMA_DUMP_DATA_SIZE 0x00500000 #define PSI_DMA_SENSOR_BUF 0x02105000 #define PSI_DMA_SENSOR_BUF_SZ 0x00080000 #define PSI_DMA_MDST_TABLE 0x02185000 #define PSI_DMA_MDST_TABLE_SIZE 0x00001000 #define PSI_DMA_HYP_DUMP 0x02186000 #define PSI_DMA_HYP_DUMP_SIZE 0x01000000 #define PSI_DMA_PCIE_INVENTORY 0x03186000 #define PSI_DMA_PCIE_INVENTORY_SIZE 0x00010000 #define PSI_DMA_LED_BUF 0x03196000 #define PSI_DMA_LED_BUF_SZ 0x00001000 #define PSI_DMA_LOC_COD_BUF 0x03197000 #define PSI_DMA_LOC_COD_BUF_SZ 0x00008000 #define PSI_DMA_MEMCONS 0x0319f000 #define PSI_DMA_MEMCONS_SZ 0x00001000 #define PSI_DMA_LOG_BUF 0x03200000 #define PSI_DMA_LOG_BUF_SZ 0x00100000 /* INMEM_CON_LEN */ /* P8 only mappings */ #define PSI_DMA_TRACE_BASE 0x04000000 struct psi { struct list_node list; uint64_t xscom_base; void *regs; unsigned int chip_id; unsigned int interrupt; bool working; bool active; }; extern void psi_set_link_polling(bool active); extern struct psi *first_psi; extern void psi_init(void); extern struct psi *psi_find_link(uint32_t chip_id); extern void psi_init_for_fsp(struct psi *psi); extern void psi_disable_link(struct psi *psi); extern void psi_reset_fsp(struct psi *psi); extern bool psi_check_link_active(struct psi *psi); extern bool psi_poll_fsp_interrupt(struct psi *psi); /* Interrupts */ extern void psi_irq_reset(void); extern void psi_enable_fsp_interrupt(struct psi *psi); extern void psi_fsp_link_in_use(struct psi *psi); /* * Must be called by the platform probe() function as the policy * is established before platform.init * * This defines whether the external interrupt should be passed to * the OS or handled locally in skiboot. Return true for skiboot * handling. Default if not called is Linux. */ #define EXTERNAL_IRQ_POLICY_LINUX false #define EXTERNAL_IRQ_POLICY_SKIBOOT true extern void psi_set_external_irq_policy(bool policy); #endif /* __PSI_H */