1 files changed, 23 insertions, 71 deletions

diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c
index 568923c5ddec..7492e9165e08 100644
--- a/drivers/dma/ioat/dma_v2.c
+++ b/drivers/dma/ioat/dma_v2.c
@@ -39,7 +39,7 @@
 #include "registers.h"
 #include "hw.h"
 
-static int ioat_ring_alloc_order = 8;
+int ioat_ring_alloc_order = 8;
 module_param(ioat_ring_alloc_order, int, 0644);
 MODULE_PARM_DESC(ioat_ring_alloc_order,
                  "ioat2+: allocate 2^n descriptors per channel (default: n=8)");
@@ -63,7 +63,7 @@ static void __ioat2_issue_pending(struct ioat2_dma_chan *ioat)
                 __func__, ioat->head, ioat->tail, ioat->issued, ioat->dmacount);
 }
 
-static void ioat2_issue_pending(struct dma_chan *chan)
+void ioat2_issue_pending(struct dma_chan *chan)
 {
         struct ioat2_dma_chan *ioat = to_ioat2_chan(chan);
 
@@ -214,7 +214,7 @@ static void ioat2_cleanup_tasklet(unsigned long data)
         writew(IOAT_CHANCTRL_RUN, ioat->base.reg_base + IOAT_CHANCTRL_OFFSET);
 }
 
-static void __restart_chan(struct ioat2_dma_chan *ioat)
+void __ioat2_restart_chan(struct ioat2_dma_chan *ioat)
 {
         struct ioat_chan_common *chan = &ioat->base;
 
@@ -255,11 +255,9 @@ static void ioat2_restart_channel(struct ioat2_dma_chan *ioat)
         if (ioat_cleanup_preamble(chan, &phys_complete))
                 __cleanup(ioat, phys_complete);
 
-        __restart_chan(ioat);
+        __ioat2_restart_chan(ioat);
 }
 
-static bool reshape_ring(struct ioat2_dma_chan *ioat, int order);
-
 static void ioat2_timer_event(unsigned long data)
 {
         struct ioat2_dma_chan *ioat = (void *) data;
@@ -321,7 +319,7 @@ static void ioat2_timer_event(unsigned long data)
  * ioat2_enumerate_channels - find and initialize the device's channels
  * @device: the device to be enumerated
  */
-static int ioat2_enumerate_channels(struct ioatdma_device *device)
+int ioat2_enumerate_channels(struct ioatdma_device *device)
 {
         struct ioat2_dma_chan *ioat;
         struct device *dev = &device->pdev->dev;
@@ -354,8 +352,8 @@ static int ioat2_enumerate_channels(struct ioatdma_device *device)
                         break;
 
                 ioat_init_channel(device, &ioat->base, i,
-                                  ioat2_timer_event,
-                                  ioat2_cleanup_tasklet,
+                                  device->timer_fn,
+                                  device->cleanup_tasklet,
                                   (unsigned long) ioat);
                 ioat->xfercap_log = xfercap_log;
                 spin_lock_init(&ioat->ring_lock);
@@ -460,7 +458,7 @@ static struct ioat_ring_ent **ioat2_alloc_ring(struct dma_chan *c, int order, gf
 /* ioat2_alloc_chan_resources - allocate/initialize ioat2 descriptor ring
  * @chan: channel to be initialized
  */
-static int ioat2_alloc_chan_resources(struct dma_chan *c)
+int ioat2_alloc_chan_resources(struct dma_chan *c)
 {
         struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
         struct ioat_chan_common *chan = &ioat->base;
@@ -514,7 +512,7 @@ static int ioat2_alloc_chan_resources(struct dma_chan *c)
         return 1 << ioat->alloc_order;
 }
 
-static bool reshape_ring(struct ioat2_dma_chan *ioat, int order)
+bool reshape_ring(struct ioat2_dma_chan *ioat, int order)
 {
         /* reshape differs from normal ring allocation in that we want
          * to allocate a new software ring while only
@@ -627,7 +625,7 @@ static bool reshape_ring(struct ioat2_dma_chan *ioat, int order)
  * @ioat: ioat2,3 channel (ring) to operate on
  * @num_descs: allocation length
  */
-static int ioat2_alloc_and_lock(u16 *idx, struct ioat2_dma_chan *ioat, int num_descs)
+int ioat2_alloc_and_lock(u16 *idx, struct ioat2_dma_chan *ioat, int num_descs)
 {
         struct ioat_chan_common *chan = &ioat->base;
 
@@ -655,9 +653,11 @@ static int ioat2_alloc_and_lock(u16 *idx, struct ioat2_dma_chan *ioat, int num_d
                 spin_lock_bh(&chan->cleanup_lock);
                 if (jiffies > chan->timer.expires &&
                     timer_pending(&chan->timer)) {
+                        struct ioatdma_device *device = chan->device;
+
                         mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
                         spin_unlock_bh(&chan->cleanup_lock);
-                        ioat2_timer_event((unsigned long) ioat);
+                        device->timer_fn((unsigned long) ioat);
                 } else
                         spin_unlock_bh(&chan->cleanup_lock);
                 return -ENOMEM;
@@ -670,7 +670,7 @@ static int ioat2_alloc_and_lock(u16 *idx, struct ioat2_dma_chan *ioat, int num_d
         return 0;  /* with ioat->ring_lock held */
 }
 
-static struct dma_async_tx_descriptor *
+struct dma_async_tx_descriptor *
 ioat2_dma_prep_memcpy_lock(struct dma_chan *c, dma_addr_t dma_dest,
                            dma_addr_t dma_src, size_t len, unsigned long flags)
 {
@@ -722,11 +722,11 @@ ioat2_dma_prep_memcpy_lock(struct dma_chan *c, dma_addr_t dma_dest,
  * ioat2_free_chan_resources - release all the descriptors
  * @chan: the channel to be cleaned
  */
-static void ioat2_free_chan_resources(struct dma_chan *c)
+void ioat2_free_chan_resources(struct dma_chan *c)
 {
         struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
         struct ioat_chan_common *chan = &ioat->base;
-        struct ioatdma_device *ioatdma_device = chan->device;
+        struct ioatdma_device *device = chan->device;
         struct ioat_ring_ent *desc;
         const u16 total_descs = 1 << ioat->alloc_order;
         int descs;
@@ -740,7 +740,7 @@ static void ioat2_free_chan_resources(struct dma_chan *c)
 
         tasklet_disable(&chan->cleanup_task);
         del_timer_sync(&chan->timer);
-        ioat2_cleanup(ioat);
+        device->cleanup_tasklet((unsigned long) ioat);
 
         /* Delay 100ms after reset to allow internal DMA logic to quiesce
          * before removing DMA descriptor resources.
@@ -770,8 +770,7 @@ static void ioat2_free_chan_resources(struct dma_chan *c)
         kfree(ioat->ring);
         ioat->ring = NULL;
         ioat->alloc_order = 0;
-        pci_pool_free(ioatdma_device->completion_pool,
-                      chan->completion,
+        pci_pool_free(device->completion_pool, chan->completion,
                       chan->completion_dma);
         spin_unlock_bh(&ioat->ring_lock);
 
@@ -781,16 +780,17 @@ static void ioat2_free_chan_resources(struct dma_chan *c)
         ioat->dmacount = 0;
 }
 
-static enum dma_status
+enum dma_status
 ioat2_is_complete(struct dma_chan *c, dma_cookie_t cookie,
                      dma_cookie_t *done, dma_cookie_t *used)
 {
         struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
+        struct ioatdma_device *device = ioat->base.device;
 
         if (ioat_is_complete(c, cookie, done, used) == DMA_SUCCESS)
                 return DMA_SUCCESS;
 
-        ioat2_cleanup(ioat);
+        device->cleanup_tasklet((unsigned long) ioat);
 
         return ioat_is_complete(c, cookie, done, used);
 }
@@ -804,6 +804,8 @@ int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca)
         int err;
 
         device->enumerate_channels = ioat2_enumerate_channels;
+        device->cleanup_tasklet = ioat2_cleanup_tasklet;
+        device->timer_fn = ioat2_timer_event;
         dma = &device->common;
         dma->device_prep_dma_memcpy = ioat2_dma_prep_memcpy_lock;
         dma->device_issue_pending = ioat2_issue_pending;
@@ -830,53 +832,3 @@ int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca)
 
         return err;
 }
-
-int __devinit ioat3_dma_probe(struct ioatdma_device *device, int dca)
-{
-        struct pci_dev *pdev = device->pdev;
-        struct dma_device *dma;
-        struct dma_chan *c;
-        struct ioat_chan_common *chan;
-        int err;
-        u16 dev_id;
-
-        device->enumerate_channels = ioat2_enumerate_channels;
-        dma = &device->common;
-        dma->device_prep_dma_memcpy = ioat2_dma_prep_memcpy_lock;
-        dma->device_issue_pending = ioat2_issue_pending;
-        dma->device_alloc_chan_resources = ioat2_alloc_chan_resources;
-        dma->device_free_chan_resources = ioat2_free_chan_resources;
-        dma->device_is_tx_complete = ioat2_is_complete;
-
-        /* -= IOAT ver.3 workarounds =- */
-        /* Write CHANERRMSK_INT with 3E07h to mask out the errors
-         * that can cause stability issues for IOAT ver.3
-         */
-        pci_write_config_dword(pdev, IOAT_PCI_CHANERRMASK_INT_OFFSET, 0x3e07);
-
-        /* Clear DMAUNCERRSTS Cfg-Reg Parity Error status bit
-         * (workaround for spurious config parity error after restart)
-         */
-        pci_read_config_word(pdev, IOAT_PCI_DEVICE_ID_OFFSET, &dev_id);
-        if (dev_id == PCI_DEVICE_ID_INTEL_IOAT_TBG0)
-                pci_write_config_dword(pdev, IOAT_PCI_DMAUNCERRSTS_OFFSET, 0x10);
-
-        err = ioat_probe(device);
-        if (err)
-                return err;
-        ioat_set_tcp_copy_break(262144);
-
-        list_for_each_entry(c, &dma->channels, device_node) {
-                chan = to_chan_common(c);
-                writel(IOAT_DMA_DCA_ANY_CPU,
-                       chan->reg_base + IOAT_DCACTRL_OFFSET);
-        }
-
-        err = ioat_register(device);
-        if (err)
-                return err;
-        if (dca)
-                device->dca = ioat3_dca_init(pdev, device->reg_base);
-
-        return err;
-}