arch/powerpc/platforms/powernv/pci.h

   1 #ifndef __POWERNV_PCI_H
   2 #define __POWERNV_PCI_H
   3
   4 struct pci_dn;
   5
   6 enum pnv_phb_type {
   7         PNV_PHB_P5IOC2  = 0,
   8         PNV_PHB_IODA1   = 1,
   9         PNV_PHB_IODA2   = 2,
  10 };
  11
  12 /* Precise PHB model for error management */
  13 enum pnv_phb_model {
  14         PNV_PHB_MODEL_UNKNOWN,
  15         PNV_PHB_MODEL_P5IOC2,
  16         PNV_PHB_MODEL_P7IOC,
  17         PNV_PHB_MODEL_PHB3,
  18 };
  19
  20 #define PNV_PCI_DIAG_BUF_SIZE   8192
  21 #define PNV_IODA_PE_DEV         (1 << 0)        /* PE has single PCI device     */
  22 #define PNV_IODA_PE_BUS         (1 << 1)        /* PE has primary PCI bus       */
  23 #define PNV_IODA_PE_BUS_ALL     (1 << 2)        /* PE has subordinate buses     */
  24 #define PNV_IODA_PE_MASTER      (1 << 3)        /* Master PE in compound case   */
  25 #define PNV_IODA_PE_SLAVE       (1 << 4)        /* Slave PE in compound case    */
  26
  27 /* Data associated with a PE, including IOMMU tracking etc.. */
  28 struct pnv_phb;
  29 struct pnv_ioda_pe {
  30         unsigned long           flags;
  31         struct pnv_phb          *phb;
  32
  33         /* A PE can be associated with a single device or an
  34          * entire bus (& children). In the former case, pdev
  35          * is populated, in the later case, pbus is.
  36          */
  37         struct pci_dev          *pdev;
  38         struct pci_bus          *pbus;
  39
  40         /* Effective RID (device RID for a device PE and base bus
  41          * RID with devfn 0 for a bus PE)
  42          */
  43         unsigned int            rid;
  44
  45         /* PE number */
  46         unsigned int            pe_number;
  47
  48         /* "Weight" assigned to the PE for the sake of DMA resource
  49          * allocations
  50          */
  51         unsigned int            dma_weight;
  52
  53         /* "Base" iommu table, ie, 4K TCEs, 32-bit DMA */
  54         int                     tce32_seg;
  55         int                     tce32_segcount;
  56         struct iommu_table      tce32_table;
  57         phys_addr_t             tce_inval_reg_phys;
  58
  59         /* 64-bit TCE bypass region */
  60         bool                    tce_bypass_enabled;
  61         uint64_t                tce_bypass_base;
  62
  63         /* MSIs. MVE index is identical for for 32 and 64 bit MSI
  64          * and -1 if not supported. (It's actually identical to the
  65          * PE number)
  66          */
  67         int                     mve_number;
  68
  69         /* PEs in compound case */
  70         struct pnv_ioda_pe      *master;
  71         struct list_head        slaves;
  72
  73         /* Link in list of PE#s */
  74         struct list_head        dma_link;
  75         struct list_head        list;
  76 };
  77
  78 #define PNV_PHB_FLAG_EEH        (1 << 0)
  79
  80 struct pnv_phb {
  81         struct pci_controller   *hose;
  82         enum pnv_phb_type       type;
  83         enum pnv_phb_model      model;
  84         u64                     hub_id;
  85         u64                     opal_id;
  86         int                     flags;
  87         void __iomem            *regs;
  88         int                     initialized;
  89         spinlock_t              lock;
  90
  91 #ifdef CONFIG_DEBUG_FS
  92         int                     has_dbgfs;
  93         struct dentry           *dbgfs;
  94 #endif
  95
  96 #ifdef CONFIG_PCI_MSI
  97         unsigned int            msi_base;
  98         unsigned int            msi32_support;
  99         struct msi_bitmap       msi_bmp;
 100 #endif
 101         int (*msi_setup)(struct pnv_phb *phb, struct pci_dev *dev,
 102                          unsigned int hwirq, unsigned int virq,
 103                          unsigned int is_64, struct msi_msg *msg);
 104         void (*dma_dev_setup)(struct pnv_phb *phb, struct pci_dev *pdev);
 105         int (*dma_set_mask)(struct pnv_phb *phb, struct pci_dev *pdev,
 106                             u64 dma_mask);
 107         u64 (*dma_get_required_mask)(struct pnv_phb *phb,
 108                                      struct pci_dev *pdev);
 109         void (*fixup_phb)(struct pci_controller *hose);
 110         u32 (*bdfn_to_pe)(struct pnv_phb *phb, struct pci_bus *bus, u32 devfn);
 111         void (*shutdown)(struct pnv_phb *phb);
 112         int (*init_m64)(struct pnv_phb *phb);
 113         void (*reserve_m64_pe)(struct pnv_phb *phb);
 114         int (*pick_m64_pe)(struct pnv_phb *phb, struct pci_bus *bus, int all);
 115         int (*get_pe_state)(struct pnv_phb *phb, int pe_no);
 116         void (*freeze_pe)(struct pnv_phb *phb, int pe_no);
 117         int (*unfreeze_pe)(struct pnv_phb *phb, int pe_no, int opt);
 118
 119         union {
 120                 struct {
 121                         struct iommu_table iommu_table;
 122                 } p5ioc2;
 123
 124                 struct {
 125                         /* Global bridge info */
 126                         unsigned int            total_pe;
 127                         unsigned int            reserved_pe;
 128
 129                         /* 32-bit MMIO window */
 130                         unsigned int            m32_size;
 131                         unsigned int            m32_segsize;
 132                         unsigned int            m32_pci_base;
 133
 134                         /* 64-bit MMIO window */
 135                         unsigned int            m64_bar_idx;
 136                         unsigned long           m64_size;
 137                         unsigned long           m64_segsize;
 138                         unsigned long           m64_base;
 139                         unsigned long           m64_bar_alloc;
 140
 141                         /* IO ports */
 142                         unsigned int            io_size;
 143                         unsigned int            io_segsize;
 144                         unsigned int            io_pci_base;
 145
 146                         /* PE allocation bitmap */
 147                         unsigned long           *pe_alloc;
 148
 149                         /* M32 & IO segment maps */
 150                         unsigned int            *m32_segmap;
 151                         unsigned int            *io_segmap;
 152                         struct pnv_ioda_pe      *pe_array;
 153
 154                         /* IRQ chip */
 155                         int                     irq_chip_init;
 156                         struct irq_chip         irq_chip;
 157
 158                         /* Sorted list of used PE's based
 159                          * on the sequence of creation
 160                          */
 161                         struct list_head        pe_list;
 162
 163                         /* Reverse map of PEs, will have to extend if
 164                          * we are to support more than 256 PEs, indexed
 165                          * bus { bus, devfn }
 166                          */
 167                         unsigned char           pe_rmap[0x10000];
 168
 169                         /* 32-bit TCE tables allocation */
 170                         unsigned long           tce32_count;
 171
 172                         /* Total "weight" for the sake of DMA resources
 173                          * allocation
 174                          */
 175                         unsigned int            dma_weight;
 176                         unsigned int            dma_pe_count;
 177
 178                         /* Sorted list of used PE's, sorted at
 179                          * boot for resource allocation purposes
 180                          */
 181                         struct list_head        pe_dma_list;
 182                 } ioda;
 183         };
 184
 185         /* PHB and hub status structure */
 186         union {
 187                 unsigned char                   blob[PNV_PCI_DIAG_BUF_SIZE];
 188                 struct OpalIoP7IOCPhbErrorData  p7ioc;
 189                 struct OpalIoPhb3ErrorData      phb3;
 190                 struct OpalIoP7IOCErrorData     hub_diag;
 191         } diag;
 192
 193 };
 194
 195 extern struct pci_ops pnv_pci_ops;
 196
 197 void pnv_pci_dump_phb_diag_data(struct pci_controller *hose,
 198                                 unsigned char *log_buff);
 199 int pnv_pci_cfg_read(struct pci_dn *pdn,
 200                      int where, int size, u32 *val);
 201 int pnv_pci_cfg_write(struct pci_dn *pdn,
 202                       int where, int size, u32 val);
 203 extern void pnv_pci_setup_iommu_table(struct iommu_table *tbl,
 204                                       void *tce_mem, u64 tce_size,
 205                                       u64 dma_offset, unsigned page_shift);
 206 extern void pnv_pci_init_p5ioc2_hub(struct device_node *np);
 207 extern void pnv_pci_init_ioda_hub(struct device_node *np);
 208 extern void pnv_pci_init_ioda2_phb(struct device_node *np);
 209 extern void pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl,
 210                                         __be64 *startp, __be64 *endp, bool rm);
 211 extern void pnv_pci_reset_secondary_bus(struct pci_dev *dev);
 212 extern int pnv_eeh_phb_reset(struct pci_controller *hose, int option);
 213
 214 #endif /* __POWERNV_PCI_H */