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authorDave Jiang <dave.jiang@intel.com>2015-08-11 18:48:10 +0300
committerVinod Koul <vinod.koul@intel.com>2015-08-17 11:07:30 +0300
commit85596a19478da5125f3471a0c474b3f05a78e390 (patch)
treec3b9726d41f5f194a92fe1e778c188af8fa53f92 /drivers/dma/ioat/dca.c
parentd73f277b329f46c13527c1090808421828671596 (diff)
downloadlinux-85596a19478da5125f3471a0c474b3f05a78e390.tar.xz
dmaengine: ioatdma: remove ioat1 specific code
Cleaning up of ioat1 specific code as it is no longer supported Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dca.c')
-rw-r--r--drivers/dma/ioat/dca.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/drivers/dma/ioat/dca.c b/drivers/dma/ioat/dca.c
index ea1e107ae884..b1cffd2429e4 100644
--- a/drivers/dma/ioat/dca.c
+++ b/drivers/dma/ioat/dca.c
@@ -71,14 +71,6 @@ static inline int dca2_tag_map_valid(u8 *tag_map)
#define APICID_BIT(x) (DCA_TAG_MAP_VALID | (x))
#define IOAT_TAG_MAP_LEN 8
-static u8 ioat_tag_map_BNB[IOAT_TAG_MAP_LEN] = {
- 1, APICID_BIT(1), APICID_BIT(2), APICID_BIT(2), };
-static u8 ioat_tag_map_SCNB[IOAT_TAG_MAP_LEN] = {
- 1, APICID_BIT(1), APICID_BIT(2), APICID_BIT(2), };
-static u8 ioat_tag_map_CNB[IOAT_TAG_MAP_LEN] = {
- 1, APICID_BIT(1), APICID_BIT(3), APICID_BIT(4), APICID_BIT(2), };
-static u8 ioat_tag_map_UNISYS[IOAT_TAG_MAP_LEN] = { 0 };
-
/* pack PCI B/D/F into a u16 */
static inline u16 dcaid_from_pcidev(struct pci_dev *pci)
{
@@ -126,72 +118,6 @@ struct ioat_dca_priv {
struct ioat_dca_slot req_slots[0];
};
-/* 5000 series chipset DCA Port Requester ID Table Entry Format
- * [15:8] PCI-Express Bus Number
- * [7:3] PCI-Express Device Number
- * [2:0] PCI-Express Function Number
- *
- * 5000 series chipset DCA control register format
- * [7:1] Reserved (0)
- * [0] Ignore Function Number
- */
-
-static int ioat_dca_add_requester(struct dca_provider *dca, struct device *dev)
-{
- struct ioat_dca_priv *ioatdca = dca_priv(dca);
- struct pci_dev *pdev;
- int i;
- u16 id;
-
- /* This implementation only supports PCI-Express */
- if (!dev_is_pci(dev))
- return -ENODEV;
- pdev = to_pci_dev(dev);
- id = dcaid_from_pcidev(pdev);
-
- if (ioatdca->requester_count == ioatdca->max_requesters)
- return -ENODEV;
-
- for (i = 0; i < ioatdca->max_requesters; i++) {
- if (ioatdca->req_slots[i].pdev == NULL) {
- /* found an empty slot */
- ioatdca->requester_count++;
- ioatdca->req_slots[i].pdev = pdev;
- ioatdca->req_slots[i].rid = id;
- writew(id, ioatdca->dca_base + (i * 4));
- /* make sure the ignore function bit is off */
- writeb(0, ioatdca->dca_base + (i * 4) + 2);
- return i;
- }
- }
- /* Error, ioatdma->requester_count is out of whack */
- return -EFAULT;
-}
-
-static int ioat_dca_remove_requester(struct dca_provider *dca,
- struct device *dev)
-{
- struct ioat_dca_priv *ioatdca = dca_priv(dca);
- struct pci_dev *pdev;
- int i;
-
- /* This implementation only supports PCI-Express */
- if (!dev_is_pci(dev))
- return -ENODEV;
- pdev = to_pci_dev(dev);
-
- for (i = 0; i < ioatdca->max_requesters; i++) {
- if (ioatdca->req_slots[i].pdev == pdev) {
- writew(0, ioatdca->dca_base + (i * 4));
- ioatdca->req_slots[i].pdev = NULL;
- ioatdca->req_slots[i].rid = 0;
- ioatdca->requester_count--;
- return i;
- }
- }
- return -ENODEV;
-}
-
static u8 ioat_dca_get_tag(struct dca_provider *dca,
struct device *dev,
int cpu)
@@ -231,83 +157,6 @@ static int ioat_dca_dev_managed(struct dca_provider *dca,
return 0;
}
-static struct dca_ops ioat_dca_ops = {
- .add_requester = ioat_dca_add_requester,
- .remove_requester = ioat_dca_remove_requester,
- .get_tag = ioat_dca_get_tag,
- .dev_managed = ioat_dca_dev_managed,
-};
-
-
-struct dca_provider *ioat_dca_init(struct pci_dev *pdev, void __iomem *iobase)
-{
- struct dca_provider *dca;
- struct ioat_dca_priv *ioatdca;
- u8 *tag_map = NULL;
- int i;
- int err;
- u8 version;
- u8 max_requesters;
-
- if (!system_has_dca_enabled(pdev))
- return NULL;
-
- /* I/OAT v1 systems must have a known tag_map to support DCA */
- switch (pdev->vendor) {
- case PCI_VENDOR_ID_INTEL:
- switch (pdev->device) {
- case PCI_DEVICE_ID_INTEL_IOAT:
- tag_map = ioat_tag_map_BNB;
- break;
- case PCI_DEVICE_ID_INTEL_IOAT_CNB:
- tag_map = ioat_tag_map_CNB;
- break;
- case PCI_DEVICE_ID_INTEL_IOAT_SCNB:
- tag_map = ioat_tag_map_SCNB;
- break;
- }
- break;
- case PCI_VENDOR_ID_UNISYS:
- switch (pdev->device) {
- case PCI_DEVICE_ID_UNISYS_DMA_DIRECTOR:
- tag_map = ioat_tag_map_UNISYS;
- break;
- }
- break;
- }
- if (tag_map == NULL)
- return NULL;
-
- version = readb(iobase + IOAT_VER_OFFSET);
- if (version == IOAT_VER_3_0)
- max_requesters = IOAT3_DCA_MAX_REQ;
- else
- max_requesters = IOAT_DCA_MAX_REQ;
-
- dca = alloc_dca_provider(&ioat_dca_ops,
- sizeof(*ioatdca) +
- (sizeof(struct ioat_dca_slot) * max_requesters));
- if (!dca)
- return NULL;
-
- ioatdca = dca_priv(dca);
- ioatdca->max_requesters = max_requesters;
- ioatdca->dca_base = iobase + 0x54;
-
- /* copy over the APIC ID to DCA tag mapping */
- for (i = 0; i < IOAT_TAG_MAP_LEN; i++)
- ioatdca->tag_map[i] = tag_map[i];
-
- err = register_dca_provider(dca, &pdev->dev);
- if (err) {
- free_dca_provider(dca);
- return NULL;
- }
-
- return dca;
-}
-
-
static int ioat2_dca_add_requester(struct dca_provider *dca, struct device *dev)
{
struct ioat_dca_priv *ioatdca = dca_priv(dca);