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Message-Id: <1388859238-22808-6-git-send-email-hauke@hauke-m.de>
Date: Sat, 4 Jan 2014 19:13:58 +0100
From: Hauke Mehrtens <hauke@...ke-m.de>
To: davem@...emloft.net
Cc: zajec5@...il.com, netdev@...r.kernel.org,
Hauke Mehrtens <hauke@...ke-m.de>
Subject: [PATCH v2 5/5] bgmac: add support for Northstar SoC (BCM4707, BCM53018)
This adds support for the Northstar SoC. This SoC does not have a PMU in
bcma and no register on it should be called. In addition it support 2.5
GBit/s Ethernet to the PHY.
This GMAC core is not fully working there are still problems with the
DMA controller.
Signed-off-by: Hauke Mehrtens <hauke@...ke-m.de>
---
drivers/net/ethernet/broadcom/bgmac.c | 63 +++++++++++++++++++++++++--------
drivers/net/ethernet/broadcom/bgmac.h | 1 +
2 files changed, 50 insertions(+), 14 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 2cdacb8..06ce958 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -848,6 +848,9 @@ static void bgmac_mac_speed(struct bgmac *bgmac)
case SPEED_1000:
set |= BGMAC_CMDCFG_ES_1000;
break;
+ case SPEED_2500:
+ set |= BGMAC_CMDCFG_ES_2500;
+ break;
default:
bgmac_err(bgmac, "Unsupported speed: %d\n", bgmac->mac_speed);
}
@@ -860,12 +863,26 @@ static void bgmac_mac_speed(struct bgmac *bgmac)
static void bgmac_miiconfig(struct bgmac *bgmac)
{
- u8 imode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >>
- BGMAC_DS_MM_SHIFT;
- if (imode == 0 || imode == 1) {
- bgmac->mac_speed = SPEED_100;
+ struct bcma_device *core = bgmac->core;
+ struct bcma_chipinfo *ci = &core->bus->chipinfo;
+ u8 imode;
+
+ if (ci->id == BCMA_CHIP_ID_BCM4707 ||
+ ci->id == BCMA_CHIP_ID_BCM53018) {
+ bcma_awrite32(core, BCMA_IOCTL,
+ bcma_aread32(core, BCMA_IOCTL) | 0x40 |
+ BGMAC_BCMA_IOCTL_SW_CLKEN);
+ bgmac->mac_speed = SPEED_2500;
bgmac->mac_duplex = DUPLEX_FULL;
bgmac_mac_speed(bgmac);
+ } else {
+ imode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) &
+ BGMAC_DS_MM_MASK) >> BGMAC_DS_MM_SHIFT;
+ if (imode == 0 || imode == 1) {
+ bgmac->mac_speed = SPEED_100;
+ bgmac->mac_duplex = DUPLEX_FULL;
+ bgmac_mac_speed(bgmac);
+ }
}
}
@@ -909,9 +926,14 @@ static void bgmac_chip_reset(struct bgmac *bgmac)
flags |= BGMAC_BCMA_IOCTL_SW_RESET;
}
- bcma_core_enable(core, flags);
+ /* 3GMAC: for BCM4707, only do core reset at bgmac_probe() */
+ if (ci->id != BCMA_CHIP_ID_BCM4707)
+ bcma_core_enable(core, flags);
- if (core->id.rev > 2) {
+ /* Request Misc PLL for corerev > 2 */
+ if (core->id.rev > 2 &&
+ ci->id != BCMA_CHIP_ID_BCM4707 &&
+ ci->id != BCMA_CHIP_ID_BCM53018) {
bgmac_set(bgmac, BCMA_CLKCTLST,
BGMAC_BCMA_CLKCTLST_MISC_PLL_REQ);
bgmac_wait_value(bgmac->core, BCMA_CLKCTLST,
@@ -1049,12 +1071,16 @@ static void bgmac_enable(struct bgmac *bgmac)
break;
}
- rxq_ctl = bgmac_read(bgmac, BGMAC_RXQ_CTL);
- rxq_ctl &= ~BGMAC_RXQ_CTL_MDP_MASK;
- bp_clk = bcma_pmu_get_bus_clock(&bgmac->core->bus->drv_cc) / 1000000;
- mdp = (bp_clk * 128 / 1000) - 3;
- rxq_ctl |= (mdp << BGMAC_RXQ_CTL_MDP_SHIFT);
- bgmac_write(bgmac, BGMAC_RXQ_CTL, rxq_ctl);
+ if (ci->id != BCMA_CHIP_ID_BCM4707 &&
+ ci->id != BCMA_CHIP_ID_BCM53018) {
+ rxq_ctl = bgmac_read(bgmac, BGMAC_RXQ_CTL);
+ rxq_ctl &= ~BGMAC_RXQ_CTL_MDP_MASK;
+ bp_clk = bcma_pmu_get_bus_clock(&bgmac->core->bus->drv_cc) /
+ 1000000;
+ mdp = (bp_clk * 128 / 1000) - 3;
+ rxq_ctl |= (mdp << BGMAC_RXQ_CTL_MDP_SHIFT);
+ bgmac_write(bgmac, BGMAC_RXQ_CTL, rxq_ctl);
+ }
}
/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */
@@ -1389,6 +1415,7 @@ static int bgmac_probe(struct bcma_device *core)
struct bgmac *bgmac;
struct ssb_sprom *sprom = &core->bus->sprom;
u8 *mac = core->core_unit ? sprom->et1mac : sprom->et0mac;
+ struct bcma_chipinfo *ci = &core->bus->chipinfo;
int err;
/* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */
@@ -1427,8 +1454,16 @@ static int bgmac_probe(struct bcma_device *core)
}
bgmac->cmn = core->bus->drv_gmac_cmn.core;
- bgmac->phyaddr = core->core_unit ? sprom->et1phyaddr :
- sprom->et0phyaddr;
+ /*
+ * Too much can go wrong in scanning MDC/MDIO playing "whos my phy?" .
+ * Instead, explicitly use the phy address 30.
+ */
+ if (ci->id == BCMA_CHIP_ID_BCM4707 || ci->id == BCMA_CHIP_ID_BCM53018)
+ bgmac->phyaddr = BGMAC_PHY_NOREGS;
+ else
+ bgmac->phyaddr = core->core_unit ? sprom->et1phyaddr :
+ sprom->et0phyaddr;
+
bgmac->phyaddr &= BGMAC_PHY_MASK;
if (bgmac->phyaddr == BGMAC_PHY_MASK) {
bgmac_err(bgmac, "No PHY found\n");
diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h
index 2da12ed..89fa5bc 100644
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -189,6 +189,7 @@
#define BGMAC_CMDCFG_ES_10 0x00000000
#define BGMAC_CMDCFG_ES_100 0x00000004
#define BGMAC_CMDCFG_ES_1000 0x00000008
+#define BGMAC_CMDCFG_ES_2500 0x0000000C
#define BGMAC_CMDCFG_PROM 0x00000010 /* Set to activate promiscuous mode */
#define BGMAC_CMDCFG_PAD_EN 0x00000020
#define BGMAC_CMDCFG_CF 0x00000040
--
1.7.10.4
--
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