1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 261305a96SBenjamin Herrenschmidt #ifndef __POWERNV_PCI_H 361305a96SBenjamin Herrenschmidt #define __POWERNV_PCI_H 461305a96SBenjamin Herrenschmidt 51e496391SJoe Perches #include <linux/compiler.h> /* for __printf */ 6f456834aSIan Munsie #include <linux/iommu.h> 7f456834aSIan Munsie #include <asm/iommu.h> 8f456834aSIan Munsie #include <asm/msi_bitmap.h> 9f456834aSIan Munsie 1061305a96SBenjamin Herrenschmidt struct pci_dn; 1161305a96SBenjamin Herrenschmidt 1261305a96SBenjamin Herrenschmidt enum pnv_phb_type { 132de50e96SRussell Currey PNV_PHB_IODA1 = 0, 142de50e96SRussell Currey PNV_PHB_IODA2 = 1, 157f2c39e9SFrederic Barrat PNV_PHB_NPU_NVLINK = 2, 167f2c39e9SFrederic Barrat PNV_PHB_NPU_OCAPI = 3, 1761305a96SBenjamin Herrenschmidt }; 1861305a96SBenjamin Herrenschmidt 19cee72d5bSBenjamin Herrenschmidt /* Precise PHB model for error management */ 20cee72d5bSBenjamin Herrenschmidt enum pnv_phb_model { 21cee72d5bSBenjamin Herrenschmidt PNV_PHB_MODEL_UNKNOWN, 22cee72d5bSBenjamin Herrenschmidt PNV_PHB_MODEL_P7IOC, 23aa0c033fSGavin Shan PNV_PHB_MODEL_PHB3, 245d2aa710SAlistair Popple PNV_PHB_MODEL_NPU, 25616badd2SAlistair Popple PNV_PHB_MODEL_NPU2, 26cee72d5bSBenjamin Herrenschmidt }; 27cee72d5bSBenjamin Herrenschmidt 285c9d6d75SGavin Shan #define PNV_PCI_DIAG_BUF_SIZE 8192 297ebdf956SGavin Shan #define PNV_IODA_PE_DEV (1 << 0) /* PE has single PCI device */ 307ebdf956SGavin Shan #define PNV_IODA_PE_BUS (1 << 1) /* PE has primary PCI bus */ 317ebdf956SGavin Shan #define PNV_IODA_PE_BUS_ALL (1 << 2) /* PE has subordinate buses */ 32262af557SGuo Chao #define PNV_IODA_PE_MASTER (1 << 3) /* Master PE in compound case */ 33262af557SGuo Chao #define PNV_IODA_PE_SLAVE (1 << 4) /* Slave PE in compound case */ 34781a868fSWei Yang #define PNV_IODA_PE_VF (1 << 5) /* PE for one VF */ 35cee72d5bSBenjamin Herrenschmidt 3631bbd45aSRussell Currey /* Indicates operations are frozen for a PE: MMIO in PESTA & DMA in PESTB. */ 3731bbd45aSRussell Currey #define PNV_IODA_STOPPED_STATE 0x8000000000000000 3831bbd45aSRussell Currey 39184cd4a3SBenjamin Herrenschmidt /* Data associated with a PE, including IOMMU tracking etc.. */ 404cce9550SGavin Shan struct pnv_phb; 41184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe { 427ebdf956SGavin Shan unsigned long flags; 434cce9550SGavin Shan struct pnv_phb *phb; 44c5f7700bSGavin Shan int device_count; 457ebdf956SGavin Shan 46184cd4a3SBenjamin Herrenschmidt /* A PE can be associated with a single device or an 47184cd4a3SBenjamin Herrenschmidt * entire bus (& children). In the former case, pdev 48184cd4a3SBenjamin Herrenschmidt * is populated, in the later case, pbus is. 49184cd4a3SBenjamin Herrenschmidt */ 50781a868fSWei Yang #ifdef CONFIG_PCI_IOV 51781a868fSWei Yang struct pci_dev *parent_dev; 52781a868fSWei Yang #endif 53184cd4a3SBenjamin Herrenschmidt struct pci_dev *pdev; 54184cd4a3SBenjamin Herrenschmidt struct pci_bus *pbus; 55184cd4a3SBenjamin Herrenschmidt 56184cd4a3SBenjamin Herrenschmidt /* Effective RID (device RID for a device PE and base bus 57184cd4a3SBenjamin Herrenschmidt * RID with devfn 0 for a bus PE) 58184cd4a3SBenjamin Herrenschmidt */ 59184cd4a3SBenjamin Herrenschmidt unsigned int rid; 60184cd4a3SBenjamin Herrenschmidt 61184cd4a3SBenjamin Herrenschmidt /* PE number */ 62184cd4a3SBenjamin Herrenschmidt unsigned int pe_number; 63184cd4a3SBenjamin Herrenschmidt 64184cd4a3SBenjamin Herrenschmidt /* "Base" iommu table, ie, 4K TCEs, 32-bit DMA */ 65b348aa65SAlexey Kardashevskiy struct iommu_table_group table_group; 660bd97167SAlexey Kardashevskiy struct npu_comp *npucomp; 67184cd4a3SBenjamin Herrenschmidt 68cd15b048SBenjamin Herrenschmidt /* 64-bit TCE bypass region */ 69cd15b048SBenjamin Herrenschmidt bool tce_bypass_enabled; 70cd15b048SBenjamin Herrenschmidt uint64_t tce_bypass_base; 71184cd4a3SBenjamin Herrenschmidt 72184cd4a3SBenjamin Herrenschmidt /* MSIs. MVE index is identical for for 32 and 64 bit MSI 73184cd4a3SBenjamin Herrenschmidt * and -1 if not supported. (It's actually identical to the 74184cd4a3SBenjamin Herrenschmidt * PE number) 75184cd4a3SBenjamin Herrenschmidt */ 76184cd4a3SBenjamin Herrenschmidt int mve_number; 77184cd4a3SBenjamin Herrenschmidt 78262af557SGuo Chao /* PEs in compound case */ 79262af557SGuo Chao struct pnv_ioda_pe *master; 80262af557SGuo Chao struct list_head slaves; 81262af557SGuo Chao 82184cd4a3SBenjamin Herrenschmidt /* Link in list of PE#s */ 837ebdf956SGavin Shan struct list_head list; 84184cd4a3SBenjamin Herrenschmidt }; 85184cd4a3SBenjamin Herrenschmidt 86f5bc6b70SGavin Shan #define PNV_PHB_FLAG_EEH (1 << 0) 87f5bc6b70SGavin Shan 8861305a96SBenjamin Herrenschmidt struct pnv_phb { 8961305a96SBenjamin Herrenschmidt struct pci_controller *hose; 9061305a96SBenjamin Herrenschmidt enum pnv_phb_type type; 91cee72d5bSBenjamin Herrenschmidt enum pnv_phb_model model; 928747f363SGavin Shan u64 hub_id; 9361305a96SBenjamin Herrenschmidt u64 opal_id; 94f5bc6b70SGavin Shan int flags; 9561305a96SBenjamin Herrenschmidt void __iomem *regs; 96fd141d1aSBenjamin Herrenschmidt u64 regs_phys; 97db1266c8SGavin Shan int initialized; 9861305a96SBenjamin Herrenschmidt spinlock_t lock; 9961305a96SBenjamin Herrenschmidt 10037c367f2SGavin Shan #ifdef CONFIG_DEBUG_FS 1017f52a526SGavin Shan int has_dbgfs; 10237c367f2SGavin Shan struct dentry *dbgfs; 10337c367f2SGavin Shan #endif 10437c367f2SGavin Shan 105c1a2562aSBenjamin Herrenschmidt unsigned int msi_base; 106c1a2562aSBenjamin Herrenschmidt unsigned int msi32_support; 107fb1b55d6SGavin Shan struct msi_bitmap msi_bmp; 108c1a2562aSBenjamin Herrenschmidt int (*msi_setup)(struct pnv_phb *phb, struct pci_dev *dev, 109137436c9SGavin Shan unsigned int hwirq, unsigned int virq, 110137436c9SGavin Shan unsigned int is_64, struct msi_msg *msg); 11161305a96SBenjamin Herrenschmidt void (*dma_dev_setup)(struct pnv_phb *phb, struct pci_dev *pdev); 112262af557SGuo Chao int (*init_m64)(struct pnv_phb *phb); 11349dec922SGavin Shan int (*get_pe_state)(struct pnv_phb *phb, int pe_no); 11449dec922SGavin Shan void (*freeze_pe)(struct pnv_phb *phb, int pe_no); 11549dec922SGavin Shan int (*unfreeze_pe)(struct pnv_phb *phb, int pe_no, int opt); 11661305a96SBenjamin Herrenschmidt 117184cd4a3SBenjamin Herrenschmidt struct { 118184cd4a3SBenjamin Herrenschmidt /* Global bridge info */ 11992b8f137SGavin Shan unsigned int total_pe_num; 12092b8f137SGavin Shan unsigned int reserved_pe_idx; 12163803c39SGavin Shan unsigned int root_pe_idx; 12263803c39SGavin Shan bool root_pe_populated; 123262af557SGuo Chao 124262af557SGuo Chao /* 32-bit MMIO window */ 125184cd4a3SBenjamin Herrenschmidt unsigned int m32_size; 126184cd4a3SBenjamin Herrenschmidt unsigned int m32_segsize; 127184cd4a3SBenjamin Herrenschmidt unsigned int m32_pci_base; 128262af557SGuo Chao 129262af557SGuo Chao /* 64-bit MMIO window */ 130262af557SGuo Chao unsigned int m64_bar_idx; 131262af557SGuo Chao unsigned long m64_size; 132262af557SGuo Chao unsigned long m64_segsize; 133262af557SGuo Chao unsigned long m64_base; 134262af557SGuo Chao unsigned long m64_bar_alloc; 135262af557SGuo Chao 136262af557SGuo Chao /* IO ports */ 137184cd4a3SBenjamin Herrenschmidt unsigned int io_size; 138184cd4a3SBenjamin Herrenschmidt unsigned int io_segsize; 139184cd4a3SBenjamin Herrenschmidt unsigned int io_pci_base; 140184cd4a3SBenjamin Herrenschmidt 14113ce7598SGavin Shan /* PE allocation */ 142781a868fSWei Yang struct mutex pe_alloc_mutex; 14313ce7598SGavin Shan unsigned long *pe_alloc; 14413ce7598SGavin Shan struct pnv_ioda_pe *pe_array; 145184cd4a3SBenjamin Herrenschmidt 146184cd4a3SBenjamin Herrenschmidt /* M32 & IO segment maps */ 14793289d8cSGavin Shan unsigned int *m64_segmap; 148184cd4a3SBenjamin Herrenschmidt unsigned int *m32_segmap; 149184cd4a3SBenjamin Herrenschmidt unsigned int *io_segmap; 150184cd4a3SBenjamin Herrenschmidt 1512b923ed1SGavin Shan /* DMA32 segment maps - IODA1 only */ 1522b923ed1SGavin Shan unsigned int dma32_count; 1532b923ed1SGavin Shan unsigned int *dma32_segmap; 1542b923ed1SGavin Shan 155137436c9SGavin Shan /* IRQ chip */ 156137436c9SGavin Shan int irq_chip_init; 157137436c9SGavin Shan struct irq_chip irq_chip; 158137436c9SGavin Shan 1597ebdf956SGavin Shan /* Sorted list of used PE's based 1607ebdf956SGavin Shan * on the sequence of creation 1617ebdf956SGavin Shan */ 1627ebdf956SGavin Shan struct list_head pe_list; 163781a868fSWei Yang struct mutex pe_list_mutex; 1647ebdf956SGavin Shan 165c127562aSGavin Shan /* Reverse map of PEs, indexed by {bus, devfn} */ 166c127562aSGavin Shan unsigned int pe_rmap[0x10000]; 167184cd4a3SBenjamin Herrenschmidt } ioda; 168cee72d5bSBenjamin Herrenschmidt 1695cb1f8fdSRussell Currey /* PHB and hub diagnostics */ 1705cb1f8fdSRussell Currey unsigned int diag_data_size; 1715cb1f8fdSRussell Currey u8 *diag_data; 17261305a96SBenjamin Herrenschmidt }; 17361305a96SBenjamin Herrenschmidt 17461305a96SBenjamin Herrenschmidt extern struct pci_ops pnv_pci_ops; 17561305a96SBenjamin Herrenschmidt 17693aef2a7SGavin Shan void pnv_pci_dump_phb_diag_data(struct pci_controller *hose, 17793aef2a7SGavin Shan unsigned char *log_buff); 1783532a741SGavin Shan int pnv_pci_cfg_read(struct pci_dn *pdn, 1799bf41be6SGavin Shan int where, int size, u32 *val); 1803532a741SGavin Shan int pnv_pci_cfg_write(struct pci_dn *pdn, 1819bf41be6SGavin Shan int where, int size, u32 val); 1820eaf4defSAlexey Kardashevskiy extern struct iommu_table *pnv_pci_table_alloc(int nid); 1830eaf4defSAlexey Kardashevskiy 184184cd4a3SBenjamin Herrenschmidt extern void pnv_pci_init_ioda_hub(struct device_node *np); 185aa0c033fSGavin Shan extern void pnv_pci_init_ioda2_phb(struct device_node *np); 1865d2aa710SAlistair Popple extern void pnv_pci_init_npu_phb(struct device_node *np); 1877f2c39e9SFrederic Barrat extern void pnv_pci_init_npu2_opencapi_phb(struct device_node *np); 1880e759bd7SAlexey Kardashevskiy extern void pnv_npu2_map_lpar(struct pnv_ioda_pe *gpe, unsigned long msr); 189d92a208dSGavin Shan extern void pnv_pci_reset_secondary_bus(struct pci_dev *dev); 190cadf364dSGavin Shan extern int pnv_eeh_phb_reset(struct pci_controller *hose, int option); 19173ed148aSBenjamin Herrenschmidt 19292ae0353SDaniel Axtens extern void pnv_pci_dma_dev_setup(struct pci_dev *pdev); 1931bc74f1cSGavin Shan extern void pnv_pci_dma_bus_setup(struct pci_bus *bus); 19492ae0353SDaniel Axtens extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type); 19592ae0353SDaniel Axtens extern void pnv_teardown_msi_irqs(struct pci_dev *pdev); 196f456834aSIan Munsie extern struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev); 197f456834aSIan Munsie extern void pnv_set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq); 1980bd97167SAlexey Kardashevskiy extern unsigned long pnv_pci_ioda2_get_table_size(__u32 page_shift, 1990bd97167SAlexey Kardashevskiy __u64 window_size, __u32 levels); 200b9fde58dSBenjamin Herrenschmidt extern int pnv_eeh_post_init(void); 20192ae0353SDaniel Axtens 2021e496391SJoe Perches __printf(3, 4) 2037d623e42SAlexey Kardashevskiy extern void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, 2047d623e42SAlexey Kardashevskiy const char *fmt, ...); 2057d623e42SAlexey Kardashevskiy #define pe_err(pe, fmt, ...) \ 2067d623e42SAlexey Kardashevskiy pe_level_printk(pe, KERN_ERR, fmt, ##__VA_ARGS__) 2077d623e42SAlexey Kardashevskiy #define pe_warn(pe, fmt, ...) \ 2087d623e42SAlexey Kardashevskiy pe_level_printk(pe, KERN_WARNING, fmt, ##__VA_ARGS__) 2097d623e42SAlexey Kardashevskiy #define pe_info(pe, fmt, ...) \ 2107d623e42SAlexey Kardashevskiy pe_level_printk(pe, KERN_INFO, fmt, ##__VA_ARGS__) 2117d623e42SAlexey Kardashevskiy 2125d2aa710SAlistair Popple /* Nvlink functions */ 213f9f83456SAlexey Kardashevskiy extern void pnv_npu_try_dma_set_bypass(struct pci_dev *gpdev, bool bypass); 2146b3d12a9SAlistair Popple extern void pnv_pci_ioda2_tce_invalidate_entire(struct pnv_phb *phb, bool rm); 215b5cb9ab1SAlexey Kardashevskiy extern struct pnv_ioda_pe *pnv_pci_npu_setup_iommu(struct pnv_ioda_pe *npe); 2160bd97167SAlexey Kardashevskiy extern struct iommu_table_group *pnv_try_setup_npu_table_group( 2170bd97167SAlexey Kardashevskiy struct pnv_ioda_pe *pe); 2180bd97167SAlexey Kardashevskiy extern struct iommu_table_group *pnv_npu_compound_attach( 2190bd97167SAlexey Kardashevskiy struct pnv_ioda_pe *pe); 2204361b034SIan Munsie 221191c2287SAlexey Kardashevskiy /* pci-ioda-tce.c */ 222c37c792dSAlexey Kardashevskiy #define POWERNV_IOMMU_DEFAULT_LEVELS 2 223191c2287SAlexey Kardashevskiy #define POWERNV_IOMMU_MAX_LEVELS 5 224191c2287SAlexey Kardashevskiy 225191c2287SAlexey Kardashevskiy extern int pnv_tce_build(struct iommu_table *tbl, long index, long npages, 226191c2287SAlexey Kardashevskiy unsigned long uaddr, enum dma_data_direction direction, 227191c2287SAlexey Kardashevskiy unsigned long attrs); 228191c2287SAlexey Kardashevskiy extern void pnv_tce_free(struct iommu_table *tbl, long index, long npages); 229191c2287SAlexey Kardashevskiy extern int pnv_tce_xchg(struct iommu_table *tbl, long index, 230a68bd126SAlexey Kardashevskiy unsigned long *hpa, enum dma_data_direction *direction, 231a68bd126SAlexey Kardashevskiy bool alloc); 232a68bd126SAlexey Kardashevskiy extern __be64 *pnv_tce_useraddrptr(struct iommu_table *tbl, long index, 233a68bd126SAlexey Kardashevskiy bool alloc); 234191c2287SAlexey Kardashevskiy extern unsigned long pnv_tce_get(struct iommu_table *tbl, long index); 235191c2287SAlexey Kardashevskiy 236191c2287SAlexey Kardashevskiy extern long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset, 237191c2287SAlexey Kardashevskiy __u32 page_shift, __u64 window_size, __u32 levels, 238090bad39SAlexey Kardashevskiy bool alloc_userspace_copy, struct iommu_table *tbl); 239191c2287SAlexey Kardashevskiy extern void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl); 240191c2287SAlexey Kardashevskiy 241191c2287SAlexey Kardashevskiy extern long pnv_pci_link_table_and_group(int node, int num, 242191c2287SAlexey Kardashevskiy struct iommu_table *tbl, 243191c2287SAlexey Kardashevskiy struct iommu_table_group *table_group); 244191c2287SAlexey Kardashevskiy extern void pnv_pci_unlink_table_and_group(struct iommu_table *tbl, 245191c2287SAlexey Kardashevskiy struct iommu_table_group *table_group); 246191c2287SAlexey Kardashevskiy extern void pnv_pci_setup_iommu_table(struct iommu_table *tbl, 247191c2287SAlexey Kardashevskiy void *tce_mem, u64 tce_size, 248191c2287SAlexey Kardashevskiy u64 dma_offset, unsigned int page_shift); 249191c2287SAlexey Kardashevskiy 25061305a96SBenjamin Herrenschmidt #endif /* __POWERNV_PCI_H */ 251