patch-2.4.22 linux-2.4.22/arch/alpha/kernel/core_lca.c

• Lines: 60
• Date: 2003-08-25 04:44:39.000000000 -0700
• Orig file: linux-2.4.21/arch/alpha/kernel/core_lca.c
• Orig date: 2001-03-02 11:12:07.000000000 -0800

diff -urN linux-2.4.21/arch/alpha/kernel/core_lca.c linux-2.4.22/arch/alpha/kernel/core_lca.c
@@ -282,7 +282,7 @@
 lca_pci_tbi(struct pci_controller *hose, dma_addr_t start, dma_addr_t end)
 {
 	wmb();
-	*(vip)LCA_IOC_TBIA = 0;
+	*(vulp)LCA_IOC_TBIA = 0;
 	mb();
 }
 
@@ -308,21 +308,25 @@
 	/*
 	 * Set up the PCI to main memory translation windows.
 	 *
-	 * Window 0 is direct access 1GB at 1GB
-	 * Window 1 is scatter-gather 8MB at 8MB (for isa)
+	 * Mimic the SRM settings for the direct-map window.
+	 *   Window 0 is scatter-gather 8MB at 8MB (for isa).
+	 *   Window 1 is direct access 1GB at 1GB.
+	 *
+	 * Note that we do not try to save any of the DMA window CSRs
+	 * before setting them, since we cannot read those CSRs on LCA.
 	 */
 	hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000, 0);
 	hose->sg_pci = NULL;
 	__direct_map_base = 0x40000000;
 	__direct_map_size = 0x40000000;
 
-	*(vulp)LCA_IOC_W_BASE0 = __direct_map_base | (2UL << 32);
-	*(vulp)LCA_IOC_W_MASK0 = (__direct_map_size - 1) & 0xfff00000;
-	*(vulp)LCA_IOC_T_BASE0 = 0;
-
-	*(vulp)LCA_IOC_W_BASE1 = hose->sg_isa->dma_base | (3UL << 32);
-	*(vulp)LCA_IOC_W_MASK1 = (hose->sg_isa->size - 1) & 0xfff00000;
-	*(vulp)LCA_IOC_T_BASE1 = virt_to_phys(hose->sg_isa->ptes);
+	*(vulp)LCA_IOC_W_BASE0 = hose->sg_isa->dma_base | (3UL << 32);
+	*(vulp)LCA_IOC_W_MASK0 = (hose->sg_isa->size - 1) & 0xfff00000;
+	*(vulp)LCA_IOC_T_BASE0 = virt_to_phys(hose->sg_isa->ptes);
+
+	*(vulp)LCA_IOC_W_BASE1 = __direct_map_base | (2UL << 32);
+	*(vulp)LCA_IOC_W_MASK1 = (__direct_map_size - 1) & 0xfff00000;
+	*(vulp)LCA_IOC_T_BASE1 = 0;
 
 	*(vulp)LCA_IOC_TB_ENA = 0x80;
 
@@ -334,6 +338,15 @@
 	 * data parity errors.
 	 */
 	*(vulp)LCA_IOC_PAR_DIS = 1UL<<5;
+
+	/*
+	 * Finally, set up for restoring the correct HAE if using SRM.
+	 * Again, since we cannot read many of the CSRs on the LCA,
+	 * one of which happens to be the HAE, we save the value that
+	 * the SRM will expect...
+	 */
+	if (alpha_using_srm)
+		srm_hae = 0x80000000UL;
 }
 
 /*