| /* 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 <skiboot.h> |
| |
| /* |
| * 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_IRSN 0x88 |
| #define PSIHB_IRSN_COMP PPC_BITMASK(0,18) |
| #define PSIHB_IRSN_IRQ_MUX PPC_BIT(28) |
| #define PSIHB_IRSN_IRQ_RESET PPC_BIT(29) |
| #define PSIHB_IRSN_DOWNSTREAM_EN PPC_BIT(30) |
| #define PSIHB_IRSN_UPSTREAM_EN PPC_BIT(31) |
| #define PSIHB_IRSN_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 and P9 (TCE enable bit) */ |
| #define PSIHB_PHBSCR 0x90 |
| |
| /* P9 registers */ |
| |
| #define PSIHB_INTERRUPT_CONTROL 0x58 |
| #define PSIHB_IRQ_METHOD PPC_BIT(0) |
| #define PSIHB_IRQ_RESET PPC_BIT(1) |
| #define PSIHB_ESB_CI_BASE 0x60 |
| #define PSIHB_ESB_CI_VALID 1 |
| #define PSIHB_ESB_NOTIF_ADDR 0x68 |
| #define PSIHB_ESB_NOTIF_VALID 1 |
| #define PSIHB_IVT_OFFSET 0x70 |
| #define PSIHB_IVT_OFF_SHIFT 32 |
| /* |
| * 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) |
| |
| #define PSIHB_XSCOM_P9_BASE 0xa |
| #define PSIHB_XSCOM_P9_HBBAR_EN PPC_BIT(63) |
| #define PSIHB_XSCOM_P9_HBCSR 0xe |
| #define PSIHB_XSCOM_P9_HBCSR_SET 0x12 |
| #define PSIHB_XSCOM_P9_HBCSR_CLR 0x13 |
| #define PSIHB_XSCOM_P9_HBSCR_FSP_IRQ PPC_BIT(17) |
| |
| /* P9 PSI Interrupts */ |
| #define P9_PSI_IRQ_PSI 0 |
| #define P9_PSI_IRQ_OCC 1 |
| #define P9_PSI_IRQ_FSI 2 |
| #define P9_PSI_IRQ_LPCHC 3 |
| #define P9_PSI_IRQ_LOCAL_ERR 4 |
| #define P9_PSI_IRQ_GLOBAL_ERR 5 |
| #define P9_PSI_IRQ_EXTERNAL 6 |
| #define P9_PSI_IRQ_LPC_SIRQ0 7 |
| #define P9_PSI_IRQ_LPC_SIRQ1 8 |
| #define P9_PSI_IRQ_LPC_SIRQ2 9 |
| #define P9_PSI_IRQ_LPC_SIRQ3 10 |
| #define P9_PSI_IRQ_SBE_I2C 11 |
| #define P9_PSI_IRQ_DIO 12 |
| #define P9_PSI_IRQ_PSU 13 |
| #define P9_PSI_NUM_IRQS 14 |
| |
| |
| |
| /* |
| * 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 /* Unused */ |
| #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 */ |
| #define PSI_DMA_PLAT_REQ_BUF 0x03300000 |
| #define PSI_DMA_PLAT_REQ_BUF_SIZE 0x00001000 |
| #define PSI_DMA_PLAT_RESP_BUF 0x03301000 |
| #define PSI_DMA_PLAT_RESP_BUF_SIZE 0x00001000 |
| |
| /* P8 only mappings */ |
| #define PSI_DMA_TRACE_BASE 0x04000000 |
| |
| struct psi { |
| struct list_node list; |
| uint64_t xscom_base; |
| void *regs; |
| void *esb_mmio; |
| unsigned int chip_id; |
| unsigned int interrupt; |
| bool active; |
| bool no_lpc_irqs; |
| struct dt_node *node; |
| }; |
| |
| 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); |
| extern struct psi *psi_find_functional_chip(void); |
| |
| /* 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 */ |
