[PARISC] Create shared <asm/ropes.h> header

Pull out struct sba_device and struct lba_device into a
common ropes.h header. Also fold the parisc portion of
iosapic.h into this file. (Then delete the useless portion
of iosapic.h)

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 150 insertions, 0 deletions

diff --git a/include/asm-parisc/ropes.h b/include/asm-parisc/ropes.h
new file mode 100644
index 000000000000..413dfcca15c7
--- /dev/null
+++ b/include/asm-parisc/ropes.h
@@ -0,0 +1,150 @@
+#ifndef _ASM_PARISC_ROPES_H_
+#define _ASM_PARISC_ROPES_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 issueing
+** 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 SBA_IOMMU_COOKIE        0x0000badbadc0ffeeUL
+
+/*
+** 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);
+}
+
+/*
+** 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);
+
+#endif /*_ASM_PARISC_ROPES_H_*/