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broadwell: pcie updates from 2.1.0 ref code

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some clock gating and pcie settings are missed in original code

BUG=chrome-os-partner:28234
BRANCH=None
TEST=build and boot on samus
     verify registers between samus and crb

Change-Id: I931276adb2f2667c4f9e7611acfd709b7232d492
Signed-off-by: Kane Chen <kane.chen@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/214568
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Kane Chen 2014-08-27 15:21:32 -07:00 • committed by chrome-internal-fetch
commit 57e42c781d
1 changed files with 11 additions and 7 deletions
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18
src/soc/intel/broadwell/pcie.c
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@ -31,6 +31,7 @@
#include <broadwell/pci_devs.h>
#include <broadwell/rcba.h>
#include <chip.h>
#include <broadwell/cpu.h>
static void pcie_update_cfg8(device_t dev, int reg, u8 mask, u8 or);
static void pcie_update_cfg(device_t dev, int reg, u32 mask, u32 or);
@ -107,6 +108,7 @@ static void root_port_init_config(device_t dev)
rpc.new_rpfn = rpc.orig_rpfn;
rpc.num_ports = NUM_ROOT_PORTS;
rpc.gbe_port = -1;
pcie_update_cfg8(dev, 0xf5, 0xa, 0x5);
rpc.pin_ownership = pci_read_config32(dev, 0x410);
root_port_config_update_gbe_port();
@ -176,6 +178,7 @@ static void pcie_enable_clock_gating(void)
{
int i;
int enabled_ports = 0;
int is_broadwell = !!(cpu_family_model() == BROADWELL_FAMILY_ULT);
for (i = 0; i < rpc.num_ports; i++) {
device_t dev;
@ -216,9 +219,13 @@ static void pcie_enable_clock_gating(void)
pcie_update_cfg8(dev, 0xe8, ~(3 << 2), (2 << 2));
/* Update PECR1 register. */
pcie_update_cfg8(dev, 0xe8, ~0, 1);
pcie_update_cfg8(dev, 0x324, ~(1 << 5), (1 < 5));
pcie_update_cfg8(dev, 0xe8, ~0, 3);
if (is_broadwell) {
pcie_update_cfg(dev, 0x324, ~((1 << 5) | (1 << 14)),
((1 << 5) | (1 << 14)));
} else {
pcie_update_cfg(dev, 0x324, ~(1 << 5), (1 << 5));
}
/* Per-Port CLKREQ# handling. */
if (gpio_is_native(18 + rp - 1))
pcie_update_cfg(dev, 0x420, ~0, (3 << 29));
@ -455,9 +462,6 @@ static void pch_pcie_early(struct device *dev)
/* Set unique clock exit latency in MPC register. */
pcie_update_cfg(dev, 0xd8, ~(0x7 << 18), (0x7 << 18));
/* Set L1 exit latency in LCAP register. */
pcie_update_cfg(dev, 0x4c, ~(0x7 << 15), (0x4 << 15));
switch (rp) {
case 1:
pcie_add_0x0202000_iobp(0xe9002440);
@ -515,7 +519,7 @@ static void pch_pcie_early(struct device *dev)
/* Set Invalid Recieve Range Check Enable in MPC register. */
pcie_update_cfg(dev, 0xd8, ~0, (1 << 25));
pcie_update_cfg8(dev, 0xf5, 0x3f, 0);
pcie_update_cfg8(dev, 0xf5, 0x0f, 0);
if (rp == 1 || rp == 5 || rp == 6)
pcie_update_cfg8(dev, 0xf7, ~0xc, 0);