summaryrefslogtreecommitdiff
path: root/board/jse/host_bridge.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/jse/host_bridge.c')
-rw-r--r--board/jse/host_bridge.c77
1 files changed, 0 insertions, 77 deletions
diff --git a/board/jse/host_bridge.c b/board/jse/host_bridge.c
deleted file mode 100644
index 76c07b0..0000000
--- a/board/jse/host_bridge.c
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (c) 2004 Picture Elements, Inc.
- * Stephen Williams (steve@icarus.com)
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-#ident "$Id:$"
-
-# include <common.h>
-# include <pci.h>
-# include "jse_priv.h"
-
-/*
- * The JSE board has an Intel 21555 non-transparent bridge for
- * communication with the host. We need to render it harmless on the
- * JSE side, but leave it alone on the host (primary) side. Normally,
- * this will all be done before the host BIOS can gain access to the
- * board, due to the Primary Access Lockout bit.
- *
- * The host_bridge_init function is called as a late initialization
- * function, after most of the board is set up, including a PCI scan.
- */
-
-void host_bridge_init (void)
-{
- /* The bridge chip is at a fixed location. */
- pci_dev_t dev = PCI_BDF (0, 10, 0);
-
- /* Set PCI Class code --
- The primary side sees this class code at 0x08 in the
- primary config space. This must be something other then a
- bridge, or MS Windows starts doing weird stuff to me. */
- pci_write_config_dword (dev, 0x48, 0x04800000);
-
- /* Set subsystem ID --
- The primary side sees this value at 0x2c. We set it here so
- that the host can tell what sort of device this is:
- We are a Picture Elements [0x12c5] JSE [0x008a]. */
- pci_write_config_dword (dev, 0x6c, 0x008a12c5);
-
- /* Downstream (Primary-to-Secondary) BARs are set up mostly
- off. We need only the Memory-0 Bar so that the host can get
- at the CSR region to set up tables and the lot. */
-
- /* Downstream Memory 0 setup (4K for CSR) */
- pci_write_config_dword (dev, 0xac, 0xfffff000);
- /* Downstream Memory 1 setup (off) */
- pci_write_config_dword (dev, 0xb0, 0x00000000);
- /* Downstream Memory 2 setup (off) */
- pci_write_config_dword (dev, 0xb4, 0x00000000);
- /* Downstream Memory 3 setup (off) */
- pci_write_config_dword (dev, 0xb8, 0x00000000);
-
- /* Upstream (Secondary-to-Primary) BARs are used to get at
- host memory from the JSE card. Create two regions: a small
- one to manage individual word reads/writes, and a larger
- one for doing bulk frame moves. */
-
- /* Upstream Memory 0 Setup -- (BAR2) 4K non-prefetchable */
- pci_write_config_dword (dev, 0xc4, 0xfffff000);
- /* Upstream Memory 1 setup -- (BAR3) 4K non-prefetchable */
- pci_write_config_dword (dev, 0xc8, 0xfffff000);
-
- /* Upstream Memory 2 (BAR4) uses page translation, and is set
- up in CCR1. Configure for 4K pages. */
-
- /* Set CCR1,0 reigsters. This clears the Primary PCI Lockout
- bit as well, so we are done configuring after this
- point. Therefore, this must be the last step.
-
- CC1[15:12]= 0 (disable I2O message unit)
- CC1[11:8] = 0x5 (4K page size)
- CC0[11] = 1 (Secondary Clock Disable: disable clock)
- CC0[10] = 0 (Primary Access Lockout: allow primary access)
- */
- pci_write_config_dword (dev, 0xcc, 0x05000800);
-}