[PATCH 5/5] [POWERPC] Add 460EX PCIe support to 4xx pci driver
Stefan Roese
sr at denx.de
Fri Feb 22 01:01:22 EST 2008
Tested on AMCC Canyonlands eval board.
Signed-off-by: Stefan Roese <sr at denx.de>
---
arch/powerpc/sysdev/ppc4xx_pci.c | 114 ++++++++++++++++++++++++++++++++++++++
arch/powerpc/sysdev/ppc4xx_pci.h | 59 +++++++++++++++++++
2 files changed, 173 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index 5abfcd1..d183b83 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -527,6 +527,7 @@ static void __init ppc4xx_probe_pcix_bridge(struct device_node *np)
*
* ibm,plb-pciex-440spe
* ibm,plb-pciex-405ex
+ * ibm,plb-pciex-460ex
*
* Anything else will be rejected for now as they are all subtly
* different unfortunately.
@@ -775,6 +776,117 @@ static struct ppc4xx_pciex_hwops ppc440speB_pcie_hwops __initdata =
.setup_utl = ppc440speB_pciex_init_utl,
};
+static int __init ppc460ex_pciex_core_init(struct device_node *np)
+{
+ /* Nothing to do, return 2 ports */
+ return 2;
+}
+
+static int ppc460ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+{
+ u32 val;
+ u32 utlset1;
+
+ if (port->endpoint) {
+ val = PTYPE_LEGACY_ENDPOINT << 20;
+ utlset1 = 0x20222222;
+ } else {
+ val = PTYPE_ROOT_PORT << 20;
+ utlset1 = 0x21222222;
+ }
+
+ if (port->index == 0) {
+ val |= LNKW_X1 << 12;
+ } else {
+ val |= LNKW_X4 << 12;
+ utlset1 |= 0x00101101;
+ }
+
+ mtdcri(SDR0, port->sdr_base + PESDRn_DLPSET, val);
+ mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET1, utlset1);
+ mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET2, 0x01210000);
+
+ switch (port->index) {
+ case 0:
+ mtdcri(SDR0, PESDR0_460EX_L0CDRCTL, 0x00003230);
+ mtdcri(SDR0, PESDR0_460EX_L0DRV, 0x00000136);
+ mtdcri(SDR0, PESDR0_460EX_L0CLK, 0x00000006);
+
+ mtdcri(SDR0, PESDR0_460EX_PHY_CTL_RST,0x10000000);
+ break;
+
+ case 1:
+ mtdcri(SDR0, PESDR1_460EX_L0CDRCTL, 0x00003230);
+ mtdcri(SDR0, PESDR1_460EX_L1CDRCTL, 0x00003230);
+ mtdcri(SDR0, PESDR1_460EX_L2CDRCTL, 0x00003230);
+ mtdcri(SDR0, PESDR1_460EX_L3CDRCTL, 0x00003230);
+ mtdcri(SDR0, PESDR1_460EX_L0DRV, 0x00000136);
+ mtdcri(SDR0, PESDR1_460EX_L1DRV, 0x00000136);
+ mtdcri(SDR0, PESDR1_460EX_L2DRV, 0x00000136);
+ mtdcri(SDR0, PESDR1_460EX_L3DRV, 0x00000136);
+ mtdcri(SDR0, PESDR1_460EX_L0CLK, 0x00000006);
+ mtdcri(SDR0, PESDR1_460EX_L1CLK, 0x00000006);
+ mtdcri(SDR0, PESDR1_460EX_L2CLK, 0x00000006);
+ mtdcri(SDR0, PESDR1_460EX_L3CLK, 0x00000006);
+
+ mtdcri(SDR0, PESDR1_460EX_PHY_CTL_RST,0x10000000);
+ break;
+ }
+
+ mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET,
+ mfdcri(SDR0, port->sdr_base + PESDRn_RCSSET) |
+ (PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTPYN));
+
+ /* Poll for PHY reset */
+ /* XXX FIXME add timeout */
+ switch (port->index) {
+ case 0:
+ while (!(mfdcri(SDR0, PESDR0_460EX_RSTSTA) & 0x1))
+ udelay(10);
+ break;
+ case 1:
+ while (!(mfdcri(SDR0, PESDR1_460EX_RSTSTA) & 0x1))
+ udelay(10);
+ break;
+ }
+
+ mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET,
+ (mfdcri(SDR0, port->sdr_base + PESDRn_RCSSET) &
+ ~(PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTDL)) |
+ PESDRx_RCSSET_RSTPYN);
+
+ port->has_ibpre = 1;
+
+ return 0;
+}
+
+static int ppc460ex_pciex_init_utl(struct ppc4xx_pciex_port *port)
+{
+ dcr_write(port->dcrs, DCRO_PEGPL_SPECIAL, 0x0);
+
+ /*
+ * Set buffer allocations and then assert VRB and TXE.
+ */
+ out_be32(port->utl_base + PEUTL_PBCTL, 0x0800000c);
+ out_be32(port->utl_base + PEUTL_OUTTR, 0x08000000);
+ out_be32(port->utl_base + PEUTL_INTR, 0x02000000);
+ out_be32(port->utl_base + PEUTL_OPDBSZ, 0x04000000);
+ out_be32(port->utl_base + PEUTL_PBBSZ, 0x00000000);
+ out_be32(port->utl_base + PEUTL_IPHBSZ, 0x02000000);
+ out_be32(port->utl_base + PEUTL_IPDBSZ, 0x04000000);
+ out_be32(port->utl_base + PEUTL_RCIRQEN,0x00f00000);
+ out_be32(port->utl_base + PEUTL_PCTL, 0x80800066);
+
+ return 0;
+}
+
+static struct ppc4xx_pciex_hwops ppc460ex_pcie_hwops __initdata =
+{
+ .core_init = ppc460ex_pciex_core_init,
+ .port_init_hw = ppc460ex_pciex_init_port_hw,
+ .setup_utl = ppc460ex_pciex_init_utl,
+};
+
#endif /* CONFIG_44x */
#ifdef CONFIG_40x
@@ -896,6 +1008,8 @@ static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
else
ppc4xx_pciex_hwops = &ppc440speB_pcie_hwops;
}
+ if (of_device_is_compatible(np, "ibm,plb-pciex-460ex"))
+ ppc4xx_pciex_hwops = &ppc460ex_pcie_hwops;
#endif /* CONFIG_44x */
#ifdef CONFIG_40x
if (of_device_is_compatible(np, "ibm,plb-pciex-405ex"))
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.h b/arch/powerpc/sysdev/ppc4xx_pci.h
index 1c07908..d04e40b 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.h
+++ b/arch/powerpc/sysdev/ppc4xx_pci.h
@@ -271,6 +271,59 @@
#define PESDR1_405EX_PHYSTA 0x044C
/*
+ * 460EX additional DCRs
+ */
+#define PESDR0_460EX_L0BIST 0x0308
+#define PESDR0_460EX_L0BISTSTS 0x0309
+#define PESDR0_460EX_L0CDRCTL 0x030A
+#define PESDR0_460EX_L0DRV 0x030B
+#define PESDR0_460EX_L0REC 0x030C
+#define PESDR0_460EX_L0LPB 0x030D
+#define PESDR0_460EX_L0CLK 0x030E
+#define PESDR0_460EX_PHY_CTL_RST 0x030F
+#define PESDR0_460EX_RSTSTA 0x0310
+#define PESDR0_460EX_OBS 0x0311
+#define PESDR0_460EX_L0ERRC 0x0320
+
+#define PESDR1_460EX_L0BIST 0x0348
+#define PESDR1_460EX_L1BIST 0x0349
+#define PESDR1_460EX_L2BIST 0x034A
+#define PESDR1_460EX_L3BIST 0x034B
+#define PESDR1_460EX_L0BISTSTS 0x034C
+#define PESDR1_460EX_L1BISTSTS 0x034D
+#define PESDR1_460EX_L2BISTSTS 0x034E
+#define PESDR1_460EX_L3BISTSTS 0x034F
+#define PESDR1_460EX_L0CDRCTL 0x0350
+#define PESDR1_460EX_L1CDRCTL 0x0351
+#define PESDR1_460EX_L2CDRCTL 0x0352
+#define PESDR1_460EX_L3CDRCTL 0x0353
+#define PESDR1_460EX_L0DRV 0x0354
+#define PESDR1_460EX_L1DRV 0x0355
+#define PESDR1_460EX_L2DRV 0x0356
+#define PESDR1_460EX_L3DRV 0x0357
+#define PESDR1_460EX_L0REC 0x0358
+#define PESDR1_460EX_L1REC 0x0359
+#define PESDR1_460EX_L2REC 0x035A
+#define PESDR1_460EX_L3REC 0x035B
+#define PESDR1_460EX_L0LPB 0x035C
+#define PESDR1_460EX_L1LPB 0x035D
+#define PESDR1_460EX_L2LPB 0x035E
+#define PESDR1_460EX_L3LPB 0x035F
+#define PESDR1_460EX_L0CLK 0x0360
+#define PESDR1_460EX_L1CLK 0x0361
+#define PESDR1_460EX_L2CLK 0x0362
+#define PESDR1_460EX_L3CLK 0x0363
+#define PESDR1_460EX_PHY_CTL_RST 0x0364
+#define PESDR1_460EX_RSTSTA 0x0365
+#define PESDR1_460EX_OBS 0x0366
+#define PESDR1_460EX_L0ERRC 0x0368
+#define PESDR1_460EX_L1ERRC 0x0369
+#define PESDR1_460EX_L2ERRC 0x036A
+#define PESDR1_460EX_L3ERRC 0x036B
+#define PESDR0_460EX_IHS1 0x036C
+#define PESDR0_460EX_IHS2 0x036D
+
+/*
* Of the above, some are common offsets from the base
*/
#define PESDRn_UTLSET1 0x00
@@ -353,6 +406,12 @@
#define PECFG_POM2LAL 0x390
#define PECFG_POM2LAH 0x394
+/* SDR Bit Mappings */
+#define PESDRx_RCSSET_HLDPLB 0x10000000
+#define PESDRx_RCSSET_RSTGU 0x01000000
+#define PESDRx_RCSSET_RDY 0x00100000
+#define PESDRx_RCSSET_RSTDL 0x00010000
+#define PESDRx_RCSSET_RSTPYN 0x00001000
enum
{
--
1.5.4.2
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