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powerpc/fsl_pci: Add support for FSL PCIe controllers v2.x 

FSL PCIe controller v2.1:
     - New MSI inbound window
     - Same Inbound windows address as PCIe controller v1.x

Added new pit_t member(pmit) to struct ccsr_pci for MSI inbound window

FSL PCIe controller v2.2 and v2.3:
     - Different addresses for PCIe inbound window 3,2,1
     - Exposed PCIe inbound window 0
     - New PCIe interrupt status register

Added new config and interrupt Status register to struct ccsr_pci & updated
pit_t array size to reflect the 4 inbound windows.

Device tree is used to maintain backward compatibility i.e. update inbound
window 1 index depending upon "compatible" field witin PCIE node.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Acked-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Prabhakar Kushwaha 2011-02-24 15:05:04 +05:30 committed by Kumar Gala
parent decbb280bb
commit f4154e160a
2 changed files with 21 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
arch/powerpc/sysdev/fsl_pci.c
View File

@ -1,7 +1,7 @@
/*
* MPC83xx/85xx/86xx PCI/PCIE support routing.
*
* Copyright 2007-2010 Freescale Semiconductor, Inc.
* Copyright 2007-2011 Freescale Semiconductor, Inc.
* Copyright 2008-2009 MontaVista Software, Inc.
*
* Initial author: Xianghua Xiao <x.xiao@freescale.com>
@ -99,7 +99,7 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
struct resource *rsrc)
{
struct ccsr_pci __iomem *pci;
int i, j, n, mem_log, win_idx = 2;
int i, j, n, mem_log, win_idx = 3, start_idx = 1, end_idx = 4;
u64 mem, sz, paddr_hi = 0;
u64 paddr_lo = ULLONG_MAX;
u32 pcicsrbar = 0, pcicsrbar_sz;
@ -109,6 +109,13 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
(u64)rsrc->start, (u64)rsrc->end - (u64)rsrc->start + 1);
if (of_device_is_compatible(hose->dn, "fsl,qoriq-pcie-v2.2")) {
win_idx = 2;
start_idx = 0;
end_idx = 3;
}
pci = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
if (!pci) {
dev_err(hose->parent, "Unable to map ATMU registers\n");
@ -118,7 +125,7 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
/* Disable all windows (except powar0 since it's ignored) */
for(i = 1; i < 5; i++)
out_be32(&pci->pow[i].powar, 0);
for(i = 0; i < 3; i++)
for (i = start_idx; i < end_idx; i++)
out_be32(&pci->piw[i].piwar, 0);
/* Setup outbound MEM window */
@ -204,7 +211,7 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
mem_log++;
}
piwar |= (mem_log - 1);
piwar |= ((mem_log - 1) & PIWAR_SZ_MASK);
/* Setup inbound memory window */
out_be32(&pci->piw[win_idx].pitar, 0x00000000);

17
arch/powerpc/sysdev/fsl_pci.h
View File

@ -1,7 +1,7 @@
/*
* MPC85xx/86xx PCI Express structure define
*
* Copyright 2007 Freescale Semiconductor, Inc
* Copyright 2007,2011 Freescale Semiconductor, Inc
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -21,6 +21,7 @@
#define PIWAR_TGI_LOCAL 0x00f00000 /* target - local memory */
#define PIWAR_READ_SNOOP 0x00050000
#define PIWAR_WRITE_SNOOP 0x00005000
#define PIWAR_SZ_MASK 0x0000003f
/* PCI/PCI Express outbound window reg */
struct pci_outbound_window_regs {
@ -49,7 +50,9 @@ struct ccsr_pci {
__be32 int_ack; /* 0x.008 - PCI Interrupt Acknowledge Register */
__be32 pex_otb_cpl_tor; /* 0x.00c - PCIE Outbound completion timeout register */
__be32 pex_conf_tor; /* 0x.010 - PCIE configuration timeout register */
u8 res2[12];
__be32 pex_config; /* 0x.014 - PCIE CONFIG Register */
__be32 pex_int_status; /* 0x.018 - PCIE interrupt status */
u8 res2[4];
__be32 pex_pme_mes_dr; /* 0x.020 - PCIE PME and message detect register */
__be32 pex_pme_mes_disr; /* 0x.024 - PCIE PME and message disable register */
__be32 pex_pme_mes_ier; /* 0x.028 - PCIE PME and message interrupt enable register */
@ -62,14 +65,14 @@ struct ccsr_pci {
* in all of the other outbound windows.
*/
struct pci_outbound_window_regs pow[5];
u8 res14[256];
/* PCI/PCI Express inbound window 3-1
u8 res14[96];
struct pci_inbound_window_regs pmit; /* 0xd00 - 0xd9c Inbound MSI */
u8 res6[96];
/* PCI/PCI Express inbound window 3-0
* inbound window 1 supports only a 32-bit base address and does not
* define an inbound window base extended address register.
*/
struct pci_inbound_window_regs piw[3];
struct pci_inbound_window_regs piw[4];
__be32 pex_err_dr; /* 0x.e00 - PCI/PCIE error detect register */
u8 res21[4];