1 files changed, 322 insertions, 0 deletions

diff --git a/arch/parisc/include/asm/ropes.h b/arch/parisc/include/asm/ropes.h
new file mode 100644
index 000000000000..09f51d5ab57c
--- /dev/null
+++ b/arch/parisc/include/asm/ropes.h
@@ -0,0 +1,322 @@
+#ifndef _ASM_PARISC_ROPES_H_
+#define _ASM_PARISC_ROPES_H_
+
+#include <asm/parisc-device.h>
+
+#ifdef CONFIG_64BIT
+/* "low end" PA8800 machines use ZX1 chipset: PAT PDC and only run 64-bit */
+#define ZX1_SUPPORT
+#endif
+
+#ifdef CONFIG_PROC_FS
+/* depends on proc fs support. But costs CPU performance */
+#undef SBA_COLLECT_STATS
+#endif
+
+/*
+** The number of pdir entries to "free" before issuing
+** a read to PCOM register to flush out PCOM writes.
+** Interacts with allocation granularity (ie 4 or 8 entries
+** allocated and free'd/purged at a time might make this
+** less interesting).
+*/
+#define DELAYED_RESOURCE_CNT    16
+
+#define MAX_IOC         2       /* per Ike. Pluto/Astro only have 1. */
+#define ROPES_PER_IOC   8       /* per Ike half or Pluto/Astro */
+
+struct ioc {
+        void __iomem    *ioc_hpa;       /* I/O MMU base address */
+        char            *res_map;       /* resource map, bit == pdir entry */
+        u64             *pdir_base;     /* physical base address */
+        unsigned long   ibase;          /* pdir IOV Space base - shared w/lba_pci */
+        unsigned long   imask;          /* pdir IOV Space mask - shared w/lba_pci */
+#ifdef ZX1_SUPPORT
+        unsigned long   iovp_mask;      /* help convert IOVA to IOVP */
+#endif
+        unsigned long   *res_hint;      /* next avail IOVP - circular search */
+        spinlock_t      res_lock;
+        unsigned int    res_bitshift;   /* from the LEFT! */
+        unsigned int    res_size;       /* size of resource map in bytes */
+#ifdef SBA_HINT_SUPPORT
+/* FIXME : DMA HINTs not used */
+        unsigned long   hint_mask_pdir; /* bits used for DMA hints */
+        unsigned int    hint_shift_pdir;
+#endif
+#if DELAYED_RESOURCE_CNT > 0
+        int             saved_cnt;
+        struct sba_dma_pair {
+                        dma_addr_t      iova;
+                        size_t          size;
+        } saved[DELAYED_RESOURCE_CNT];
+#endif
+
+#ifdef SBA_COLLECT_STATS
+#define SBA_SEARCH_SAMPLE       0x100
+        unsigned long   avg_search[SBA_SEARCH_SAMPLE];
+        unsigned long   avg_idx;        /* current index into avg_search */
+        unsigned long   used_pages;
+        unsigned long   msingle_calls;
+        unsigned long   msingle_pages;
+        unsigned long   msg_calls;
+        unsigned long   msg_pages;
+        unsigned long   usingle_calls;
+        unsigned long   usingle_pages;
+        unsigned long   usg_calls;
+        unsigned long   usg_pages;
+#endif
+        /* STUFF We don't need in performance path */
+        unsigned int    pdir_size;      /* in bytes, determined by IOV Space size */
+};
+
+struct sba_device {
+        struct sba_device       *next;  /* list of SBA's in system */
+        struct parisc_device    *dev;   /* dev found in bus walk */
+        const char              *name;
+        void __iomem            *sba_hpa; /* base address */
+        spinlock_t              sba_lock;
+        unsigned int            flags;  /* state/functionality enabled */
+        unsigned int            hw_rev;  /* HW revision of chip */
+
+        struct resource         chip_resv; /* MMIO reserved for chip */
+        struct resource         iommu_resv; /* MMIO reserved for iommu */
+
+        unsigned int            num_ioc;  /* number of on-board IOC's */
+        struct ioc              ioc[MAX_IOC];
+};
+
+#define ASTRO_RUNWAY_PORT       0x582
+#define IKE_MERCED_PORT         0x803
+#define REO_MERCED_PORT         0x804
+#define REOG_MERCED_PORT        0x805
+#define PLUTO_MCKINLEY_PORT     0x880
+
+static inline int IS_ASTRO(struct parisc_device *d) {
+        return d->id.hversion == ASTRO_RUNWAY_PORT;
+}
+
+static inline int IS_IKE(struct parisc_device *d) {
+        return d->id.hversion == IKE_MERCED_PORT;
+}
+
+static inline int IS_PLUTO(struct parisc_device *d) {
+        return d->id.hversion == PLUTO_MCKINLEY_PORT;
+}
+
+#define PLUTO_IOVA_BASE (1UL*1024*1024*1024)    /* 1GB */
+#define PLUTO_IOVA_SIZE (1UL*1024*1024*1024)    /* 1GB */
+#define PLUTO_GART_SIZE (PLUTO_IOVA_SIZE / 2)
+
+#define SBA_PDIR_VALID_BIT      0x8000000000000000ULL
+
+#define SBA_AGPGART_COOKIE      0x0000badbadc0ffeeULL
+
+#define SBA_FUNC_ID     0x0000  /* function id */
+#define SBA_FCLASS      0x0008  /* function class, bist, header, rev... */
+
+#define SBA_FUNC_SIZE 4096   /* SBA configuration function reg set */
+
+#define ASTRO_IOC_OFFSET        (32 * SBA_FUNC_SIZE)
+#define PLUTO_IOC_OFFSET        (1 * SBA_FUNC_SIZE)
+/* Ike's IOC's occupy functions 2 and 3 */
+#define IKE_IOC_OFFSET(p)       ((p+2) * SBA_FUNC_SIZE)
+
+#define IOC_CTRL          0x8   /* IOC_CTRL offset */
+#define IOC_CTRL_TC       (1 << 0) /* TOC Enable */
+#define IOC_CTRL_CE       (1 << 1) /* Coalesce Enable */
+#define IOC_CTRL_DE       (1 << 2) /* Dillon Enable */
+#define IOC_CTRL_RM       (1 << 8) /* Real Mode */
+#define IOC_CTRL_NC       (1 << 9) /* Non Coherent Mode */
+#define IOC_CTRL_D4       (1 << 11) /* Disable 4-byte coalescing */
+#define IOC_CTRL_DD       (1 << 13) /* Disable distr. LMMIO range coalescing */
+
+/*
+** Offsets into MBIB (Function 0 on Ike and hopefully Astro)
+** Firmware programs this stuff. Don't touch it.
+*/
+#define LMMIO_DIRECT0_BASE  0x300
+#define LMMIO_DIRECT0_MASK  0x308
+#define LMMIO_DIRECT0_ROUTE 0x310
+
+#define LMMIO_DIST_BASE  0x360
+#define LMMIO_DIST_MASK  0x368
+#define LMMIO_DIST_ROUTE 0x370
+
+#define IOS_DIST_BASE   0x390
+#define IOS_DIST_MASK   0x398
+#define IOS_DIST_ROUTE  0x3A0
+
+#define IOS_DIRECT_BASE 0x3C0
+#define IOS_DIRECT_MASK 0x3C8
+#define IOS_DIRECT_ROUTE 0x3D0
+
+/*
+** Offsets into I/O TLB (Function 2 and 3 on Ike)
+*/
+#define ROPE0_CTL       0x200  /* "regbus pci0" */
+#define ROPE1_CTL       0x208
+#define ROPE2_CTL       0x210
+#define ROPE3_CTL       0x218
+#define ROPE4_CTL       0x220
+#define ROPE5_CTL       0x228
+#define ROPE6_CTL       0x230
+#define ROPE7_CTL       0x238
+
+#define IOC_ROPE0_CFG   0x500   /* pluto only */
+#define   IOC_ROPE_AO     0x10  /* Allow "Relaxed Ordering" */
+
+#define HF_ENABLE       0x40
+
+#define IOC_IBASE       0x300   /* IO TLB */
+#define IOC_IMASK       0x308
+#define IOC_PCOM        0x310
+#define IOC_TCNFG       0x318
+#define IOC_PDIR_BASE   0x320
+
+/*
+** IOC supports 4/8/16/64KB page sizes (see TCNFG register)
+** It's safer (avoid memory corruption) to keep DMA page mappings
+** equivalently sized to VM PAGE_SIZE.
+**
+** We really can't avoid generating a new mapping for each
+** page since the Virtual Coherence Index has to be generated
+** and updated for each page.
+**
+** PAGE_SIZE could be greater than IOVP_SIZE. But not the inverse.
+*/
+#define IOVP_SIZE       PAGE_SIZE
+#define IOVP_SHIFT      PAGE_SHIFT
+#define IOVP_MASK       PAGE_MASK
+
+#define SBA_PERF_CFG    0x708   /* Performance Counter stuff */
+#define SBA_PERF_MASK1  0x718
+#define SBA_PERF_MASK2  0x730
+
+/*
+** Offsets into PCI Performance Counters (functions 12 and 13)
+** Controlled by PERF registers in function 2 & 3 respectively.
+*/
+#define SBA_PERF_CNT1   0x200
+#define SBA_PERF_CNT2   0x208
+#define SBA_PERF_CNT3   0x210
+
+/*
+** lba_device: Per instance Elroy data structure
+*/
+struct lba_device {
+        struct pci_hba_data     hba;
+
+        spinlock_t              lba_lock;
+        void                    *iosapic_obj;
+
+#ifdef CONFIG_64BIT
+        void __iomem            *iop_base;      /* PA_VIEW - for IO port accessor funcs */
+#endif
+
+        int                     flags;          /* state/functionality enabled */
+        int                     hw_rev;         /* HW revision of chip */
+};
+
+#define ELROY_HVERS             0x782
+#define MERCURY_HVERS           0x783
+#define QUICKSILVER_HVERS       0x784
+
+static inline int IS_ELROY(struct parisc_device *d) {
+        return (d->id.hversion == ELROY_HVERS);
+}
+
+static inline int IS_MERCURY(struct parisc_device *d) {
+        return (d->id.hversion == MERCURY_HVERS);
+}
+
+static inline int IS_QUICKSILVER(struct parisc_device *d) {
+        return (d->id.hversion == QUICKSILVER_HVERS);
+}
+
+static inline int agp_mode_mercury(void __iomem *hpa) {
+        u64 bus_mode;
+
+        bus_mode = readl(hpa + 0x0620);
+        if (bus_mode & 1)
+                return 1;
+
+        return 0;
+}
+
+/*
+** I/O SAPIC init function
+** Caller knows where an I/O SAPIC is. LBA has an integrated I/O SAPIC.
+** Call setup as part of per instance initialization.
+** (ie *not* init_module() function unless only one is present.)
+** fixup_irq is to initialize PCI IRQ line support and
+** virtualize pcidev->irq value. To be called by pci_fixup_bus().
+*/
+extern void *iosapic_register(unsigned long hpa);
+extern int iosapic_fixup_irq(void *obj, struct pci_dev *pcidev);
+
+#define LBA_FUNC_ID     0x0000  /* function id */
+#define LBA_FCLASS      0x0008  /* function class, bist, header, rev... */
+#define LBA_CAPABLE     0x0030  /* capabilities register */
+
+#define LBA_PCI_CFG_ADDR        0x0040  /* poke CFG address here */
+#define LBA_PCI_CFG_DATA        0x0048  /* read or write data here */
+
+#define LBA_PMC_MTLT    0x0050  /* Firmware sets this - read only. */
+#define LBA_FW_SCRATCH  0x0058  /* Firmware writes the PCI bus number here. */
+#define LBA_ERROR_ADDR  0x0070  /* On error, address gets logged here */
+
+#define LBA_ARB_MASK    0x0080  /* bit 0 enable arbitration. PAT/PDC enables */
+#define LBA_ARB_PRI     0x0088  /* firmware sets this. */
+#define LBA_ARB_MODE    0x0090  /* firmware sets this. */
+#define LBA_ARB_MTLT    0x0098  /* firmware sets this. */
+
+#define LBA_MOD_ID      0x0100  /* Module ID. PDC_PAT_CELL reports 4 */
+
+#define LBA_STAT_CTL    0x0108  /* Status & Control */
+#define   LBA_BUS_RESET         0x01    /*  Deassert PCI Bus Reset Signal */
+#define   CLEAR_ERRLOG          0x10    /*  "Clear Error Log" cmd */
+#define   CLEAR_ERRLOG_ENABLE   0x20    /*  "Clear Error Log" Enable */
+#define   HF_ENABLE     0x40    /*    enable HF mode (default is -1 mode) */
+
+#define LBA_LMMIO_BASE  0x0200  /* < 4GB I/O address range */
+#define LBA_LMMIO_MASK  0x0208
+
+#define LBA_GMMIO_BASE  0x0210  /* > 4GB I/O address range */
+#define LBA_GMMIO_MASK  0x0218
+
+#define LBA_WLMMIO_BASE 0x0220  /* All < 4GB ranges under the same *SBA* */
+#define LBA_WLMMIO_MASK 0x0228
+
+#define LBA_WGMMIO_BASE 0x0230  /* All > 4GB ranges under the same *SBA* */
+#define LBA_WGMMIO_MASK 0x0238
+
+#define LBA_IOS_BASE    0x0240  /* I/O port space for this LBA */
+#define LBA_IOS_MASK    0x0248
+
+#define LBA_ELMMIO_BASE 0x0250  /* Extra LMMIO range */
+#define LBA_ELMMIO_MASK 0x0258
+
+#define LBA_EIOS_BASE   0x0260  /* Extra I/O port space */
+#define LBA_EIOS_MASK   0x0268
+
+#define LBA_GLOBAL_MASK 0x0270  /* Mercury only: Global Address Mask */
+#define LBA_DMA_CTL     0x0278  /* firmware sets this */
+
+#define LBA_IBASE       0x0300  /* SBA DMA support */
+#define LBA_IMASK       0x0308
+
+/* FIXME: ignore DMA Hint stuff until we can measure performance */
+#define LBA_HINT_CFG    0x0310
+#define LBA_HINT_BASE   0x0380  /* 14 registers at every 8 bytes. */
+
+#define LBA_BUS_MODE    0x0620
+
+/* ERROR regs are needed for config cycle kluges */
+#define LBA_ERROR_CONFIG 0x0680
+#define     LBA_SMART_MODE 0x20
+#define LBA_ERROR_STATUS 0x0688
+#define LBA_ROPE_CTL     0x06A0
+
+#define LBA_IOSAPIC_BASE        0x800 /* Offset of IRQ logic */
+
+#endif /*_ASM_PARISC_ROPES_H_*/