[U-Boot-Users] [PATCH] fsl_pci_init enable COMMAND_MEMORY if inbound window

Ed Swarthout Ed.Swarthout at freescale.com
Sat Oct 20 00:51:40 CEST 2007


Patch 16e23c3f removed PCSRBAR allocation.  But passing zero windows
to pciauto_setup_device has the side effect of not getting
COMMAND_MEMORY set.

Signed-off-by: Ed Swarthout <Ed.Swarthout at freescale.com>
---

This fixes the PCI ethernet card problem that use dma for the
mpc8544ds and mpc8610hpcd boards.

 drivers/fsl_pci_init.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/fsl_pci_init.c b/drivers/fsl_pci_init.c
index 6394234..e0c3bed 100644
--- a/drivers/fsl_pci_init.c
+++ b/drivers/fsl_pci_init.c
@@ -54,6 +54,7 @@ fsl_pci_init(struct pci_controller *hose)
 	u8 temp8;
 	int r;
 	int bridge;
+	int inbound = 0;
 	volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) hose->cfg_addr;
 	pci_dev_t dev = PCI_BDF(busno,0,0);
 
@@ -74,6 +75,7 @@ fsl_pci_init(struct pci_controller *hose)
 				PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP |
 				(__ilog2(hose->regions[r].size) - 1);
 			pi++;
+			inbound = hose->regions[r].size > 0;
 		} else { /* Outbound */
 			po->powbar = (hose->regions[r].phys_start >> 12) & 0x000fffff;
 			po->potar = (hose->regions[r].bus_start >> 12) & 0x000fffff;
@@ -138,6 +140,12 @@ fsl_pci_init(struct pci_controller *hose)
 	pciauto_setup_device(hose, dev, 0, hose->pci_mem,
 			     hose->pci_prefetch, hose->pci_io);
 
+	if (inbound) {
+		pci_hose_read_config_word(hose, dev, PCI_COMMAND, &temp16);
+		pci_hose_write_config_word(hose, dev, PCI_COMMAND,
+					   temp16 | PCI_COMMAND_MEMORY);
+	}
+
 #ifndef CONFIG_PCI_NOSCAN
 	printf ("               Scanning PCI bus %02x\n", hose->current_busno);
 	hose->last_busno = pci_hose_scan_bus(hose,hose->current_busno);
-- 
1.5.3.4.225.gbee42





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