[tg3] Remove tg3_calc_dma_bndry()

This function never did much in this driver anyway, and after commit
b5ed30b2 ("[tg3] Fix compilation on newer gcc versions") it became
apparent that its remaining functionality could be easily moved to
tg3_test_dma().

Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/net/tg3/tg3.c

 	buf_dma = virt_to_bus(buf);
 	DBGC2(tp->dev, "dma test buffer, virt: %p phys: %#08x\n", buf, buf_dma);
 
-	tp->dma_rwctrl = ((0x7 << DMA_RWCTRL_PCI_WRITE_CMD_SHIFT) |
-			  (0x6 << DMA_RWCTRL_PCI_READ_CMD_SHIFT));
-
-	tp->dma_rwctrl = tg3_calc_dma_bndry(tp, tp->dma_rwctrl);
-
-	if (tg3_flag(tp, 57765_PLUS))
+	if (tg3_flag(tp, 57765_PLUS)) {
+		tp->dma_rwctrl = DMA_RWCTRL_DIS_CACHE_ALIGNMENT;
 		goto out;
+	}
+
+	tp->dma_rwctrl = ((0x7 << DMA_RWCTRL_PCI_WRITE_CMD_SHIFT) |
+	                 (0x6 << DMA_RWCTRL_PCI_READ_CMD_SHIFT));
 
 	if (tg3_flag(tp, PCI_EXPRESS)) {
 		/* DMA read watermark not used on PCIE */

src/drivers/net/tg3/tg3.h

 void tg3_set_power_state_0(struct tg3 *tp);
 int tg3_alloc_consistent(struct tg3 *tp);
 int tg3_init_hw(struct tg3 *tp, int reset_phy);
-u32 tg3_calc_dma_bndry(struct tg3 *tp, u32 val);
 void tg3_poll_link(struct tg3 *tp);
 void tg3_wait_for_event_ack(struct tg3 *tp);
 void __tg3_set_mac_addr(struct tg3 *tp, int skip_mac_1);

src/drivers/net/tg3/tg3_hw.c

 	txd->vlan_tag = 0;
 }
 
-u32 tg3_calc_dma_bndry(struct tg3 *tp, u32 val)
-{	DBGP("%s\n", __func__);
-
-	u8 byte;
-
-	pci_read_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE, &byte);
-
-	/* On 5703 and later chips, the boundary bits have no
-	 * effect.
-	 */
-	if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
-	    GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701 &&
-	    !tg3_flag(tp, PCI_EXPRESS))
-		goto out;
-
-	if (tg3_flag(tp, 57765_PLUS))
-		val = DMA_RWCTRL_DIS_CACHE_ALIGNMENT;
-
-out:
-	return val;
-}
-
 int tg3_do_test_dma(struct tg3 *tp, u32 __unused *buf, dma_addr_t buf_dma, int size, int to_device)
 {	DBGP("%s\n", __func__);