1 files changed, 0 insertions, 134 deletions

diff --git a/arch/s390/pci/pci_msi.c b/arch/s390/pci/pci_msi.c
deleted file mode 100644
index d4b480a18b0f..000000000000
--- a/arch/s390/pci/pci_msi.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/*
- * Copyright IBM Corp. 2012
- *
- * Author(s):
- *   Jan Glauber <jang@linux.vnet.ibm.com>
- */
-
-#define COMPONENT "zPCI"
-#define pr_fmt(fmt) COMPONENT ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/rculist.h>
-#include <linux/hash.h>
-#include <linux/pci.h>
-#include <linux/msi.h>
-#include <asm/hw_irq.h>
-
-/* mapping of irq numbers to msi_desc */
-static struct hlist_head *msi_hash;
-static const unsigned int msi_hash_bits = 8;
-#define MSI_HASH_BUCKETS (1U << msi_hash_bits)
-#define msi_hashfn(nr)  hash_long(nr, msi_hash_bits)
-
-static DEFINE_SPINLOCK(msi_map_lock);
-
-struct msi_desc *__irq_get_msi_desc(unsigned int irq)
-{
-        struct msi_map *map;
-
-        hlist_for_each_entry_rcu(map,
-                        &msi_hash[msi_hashfn(irq)], msi_chain)
-                if (map->irq == irq)
-                        return map->msi;
-        return NULL;
-}
-
-int zpci_msi_set_mask_bits(struct msi_desc *msi, u32 mask, u32 flag)
-{
-        if (msi->msi_attrib.is_msix) {
-                int offset = msi->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE +
-                        PCI_MSIX_ENTRY_VECTOR_CTRL;
-                msi->masked = readl(msi->mask_base + offset);
-                writel(flag, msi->mask_base + offset);
-        } else {
-                if (msi->msi_attrib.maskbit) {
-                        int pos;
-                        u32 mask_bits;
-
-                        pos = (long) msi->mask_base;
-                        pci_read_config_dword(msi->dev, pos, &mask_bits);
-                        mask_bits &= ~(mask);
-                        mask_bits |= flag & mask;
-                        pci_write_config_dword(msi->dev, pos, mask_bits);
-                } else {
-                        return 0;
-                }
-        }
-
-        msi->msi_attrib.maskbit = !!flag;
-        return 1;
-}
-
-int zpci_setup_msi_irq(struct zpci_dev *zdev, struct msi_desc *msi,
-                       unsigned int nr, int offset)
-{
-        struct msi_map *map;
-        struct msi_msg msg;
-        int rc;
-
-        map = zdev->msi_map + (nr & ZPCI_MSI_VEC_MASK);
-        map->irq = nr;
-        map->msi = msi;
-        INIT_HLIST_NODE(&map->msi_chain);
-
-        pr_debug("%s hashing irq: %u  to bucket nr: %llu\n",
-                __func__, nr, msi_hashfn(nr));
-        hlist_add_head_rcu(&map->msi_chain, &msi_hash[msi_hashfn(nr)]);
-
-        spin_lock(&msi_map_lock);
-        rc = irq_set_msi_desc(nr, msi);
-        if (rc) {
-                spin_unlock(&msi_map_lock);
-                hlist_del_rcu(&map->msi_chain);
-                return rc;
-        }
-        spin_unlock(&msi_map_lock);
-
-        msg.data = nr - offset;
-        msg.address_lo = zdev->msi_addr & 0xffffffff;
-        msg.address_hi = zdev->msi_addr >> 32;
-        write_msi_msg(nr, &msg);
-        return 0;
-}
-
-void zpci_teardown_msi_irq(struct zpci_dev *zdev, struct msi_desc *msi)
-{
-        int nr = msi->irq & ZPCI_MSI_VEC_MASK;
-        struct msi_map *map;
-
-        zpci_msi_set_mask_bits(msi, 1, 1);
-        msi->msg.address_lo = 0;
-        msi->msg.address_hi = 0;
-        msi->msg.data = 0;
-        msi->irq = 0;
-
-        spin_lock(&msi_map_lock);
-        map = zdev->msi_map + nr;
-        hlist_del_rcu(&map->msi_chain);
-        spin_unlock(&msi_map_lock);
-}
-
-/*
- * The msi hash table has 256 entries which is good for 4..20
- * devices (a typical device allocates 10 + CPUs MSI's). Maybe make
- * the hash table size adjustable later.
- */
-int __init zpci_msihash_init(void)
-{
-        unsigned int i;
-
-        msi_hash = kmalloc(MSI_HASH_BUCKETS * sizeof(*msi_hash), GFP_KERNEL);
-        if (!msi_hash)
-                return -ENOMEM;
-
-        for (i = 0; i < MSI_HASH_BUCKETS; i++)
-                INIT_HLIST_HEAD(&msi_hash[i]);
-        return 0;
-}
-
-void __init zpci_msihash_exit(void)
-{
-        kfree(msi_hash);
-}