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path: root/drivers/net/phy/mdio-octeon.c
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Diffstat (limited to 'drivers/net/phy/mdio-octeon.c')
-rw-r--r--drivers/net/phy/mdio-octeon.c136
1 files changed, 115 insertions, 21 deletions
diff --git a/drivers/net/phy/mdio-octeon.c b/drivers/net/phy/mdio-octeon.c
index c838ad6155f7..fcf4e4df7cc8 100644
--- a/drivers/net/phy/mdio-octeon.c
+++ b/drivers/net/phy/mdio-octeon.c
@@ -7,6 +7,7 @@
*/
#include <linux/platform_device.h>
+#include <linux/of_address.h>
#include <linux/of_mdio.h>
#include <linux/delay.h>
#include <linux/module.h>
@@ -14,11 +15,12 @@
#include <linux/phy.h>
#include <linux/io.h>
+#ifdef CONFIG_CAVIUM_OCTEON_SOC
#include <asm/octeon/octeon.h>
-#include <asm/octeon/cvmx-smix-defs.h>
+#endif
-#define DRV_VERSION "1.0"
-#define DRV_DESCRIPTION "Cavium Networks Octeon SMI/MDIO driver"
+#define DRV_VERSION "1.1"
+#define DRV_DESCRIPTION "Cavium Networks Octeon/ThunderX SMI/MDIO driver"
#define SMI_CMD 0x0
#define SMI_WR_DAT 0x8
@@ -26,6 +28,79 @@
#define SMI_CLK 0x18
#define SMI_EN 0x20
+#ifdef __BIG_ENDIAN_BITFIELD
+#define OCT_MDIO_BITFIELD_FIELD(field, more) \
+ field; \
+ more
+
+#else
+#define OCT_MDIO_BITFIELD_FIELD(field, more) \
+ more \
+ field;
+
+#endif
+
+union cvmx_smix_clk {
+ u64 u64;
+ struct cvmx_smix_clk_s {
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_25_63:39,
+ OCT_MDIO_BITFIELD_FIELD(u64 mode:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_21_23:3,
+ OCT_MDIO_BITFIELD_FIELD(u64 sample_hi:5,
+ OCT_MDIO_BITFIELD_FIELD(u64 sample_mode:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_14_14:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 clk_idle:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 preamble:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 sample:4,
+ OCT_MDIO_BITFIELD_FIELD(u64 phase:8,
+ ;))))))))))
+ } s;
+};
+
+union cvmx_smix_cmd {
+ u64 u64;
+ struct cvmx_smix_cmd_s {
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
+ OCT_MDIO_BITFIELD_FIELD(u64 phy_op:2,
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_13_15:3,
+ OCT_MDIO_BITFIELD_FIELD(u64 phy_adr:5,
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_5_7:3,
+ OCT_MDIO_BITFIELD_FIELD(u64 reg_adr:5,
+ ;))))))
+ } s;
+};
+
+union cvmx_smix_en {
+ u64 u64;
+ struct cvmx_smix_en_s {
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_1_63:63,
+ OCT_MDIO_BITFIELD_FIELD(u64 en:1,
+ ;))
+ } s;
+};
+
+union cvmx_smix_rd_dat {
+ u64 u64;
+ struct cvmx_smix_rd_dat_s {
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
+ OCT_MDIO_BITFIELD_FIELD(u64 pending:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 val:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 dat:16,
+ ;))))
+ } s;
+};
+
+union cvmx_smix_wr_dat {
+ u64 u64;
+ struct cvmx_smix_wr_dat_s {
+ OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
+ OCT_MDIO_BITFIELD_FIELD(u64 pending:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 val:1,
+ OCT_MDIO_BITFIELD_FIELD(u64 dat:16,
+ ;))))
+ } s;
+};
+
enum octeon_mdiobus_mode {
UNINIT = 0,
C22,
@@ -41,6 +116,21 @@ struct octeon_mdiobus {
int phy_irq[PHY_MAX_ADDR];
};
+#ifdef CONFIG_CAVIUM_OCTEON_SOC
+static void oct_mdio_writeq(u64 val, u64 addr)
+{
+ cvmx_write_csr(addr, val);
+}
+
+static u64 oct_mdio_readq(u64 addr)
+{
+ return cvmx_read_csr(addr);
+}
+#else
+#define oct_mdio_writeq(val, addr) writeq_relaxed(val, (void *)addr)
+#define oct_mdio_readq(addr) readq_relaxed((void *)addr)
+#endif
+
static void octeon_mdiobus_set_mode(struct octeon_mdiobus *p,
enum octeon_mdiobus_mode m)
{
@@ -49,10 +139,10 @@ static void octeon_mdiobus_set_mode(struct octeon_mdiobus *p,
if (m == p->mode)
return;
- smi_clk.u64 = cvmx_read_csr(p->register_base + SMI_CLK);
+ smi_clk.u64 = oct_mdio_readq(p->register_base + SMI_CLK);
smi_clk.s.mode = (m == C45) ? 1 : 0;
smi_clk.s.preamble = 1;
- cvmx_write_csr(p->register_base + SMI_CLK, smi_clk.u64);
+ oct_mdio_writeq(smi_clk.u64, p->register_base + SMI_CLK);
p->mode = m;
}
@@ -67,7 +157,7 @@ static int octeon_mdiobus_c45_addr(struct octeon_mdiobus *p,
smi_wr.u64 = 0;
smi_wr.s.dat = regnum & 0xffff;
- cvmx_write_csr(p->register_base + SMI_WR_DAT, smi_wr.u64);
+ oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);
regnum = (regnum >> 16) & 0x1f;
@@ -75,14 +165,14 @@ static int octeon_mdiobus_c45_addr(struct octeon_mdiobus *p,
smi_cmd.s.phy_op = 0; /* MDIO_CLAUSE_45_ADDRESS */
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = regnum;
- cvmx_write_csr(p->register_base + SMI_CMD, smi_cmd.u64);
+ oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
do {
/* Wait 1000 clocks so we don't saturate the RSL bus
* doing reads.
*/
__delay(1000);
- smi_wr.u64 = cvmx_read_csr(p->register_base + SMI_WR_DAT);
+ smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);
} while (smi_wr.s.pending && --timeout);
if (timeout <= 0)
@@ -114,14 +204,14 @@ static int octeon_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum)
smi_cmd.s.phy_op = op;
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = regnum;
- cvmx_write_csr(p->register_base + SMI_CMD, smi_cmd.u64);
+ oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
do {
/* Wait 1000 clocks so we don't saturate the RSL bus
* doing reads.
*/
__delay(1000);
- smi_rd.u64 = cvmx_read_csr(p->register_base + SMI_RD_DAT);
+ smi_rd.u64 = oct_mdio_readq(p->register_base + SMI_RD_DAT);
} while (smi_rd.s.pending && --timeout);
if (smi_rd.s.val)
@@ -153,20 +243,20 @@ static int octeon_mdiobus_write(struct mii_bus *bus, int phy_id,
smi_wr.u64 = 0;
smi_wr.s.dat = val;
- cvmx_write_csr(p->register_base + SMI_WR_DAT, smi_wr.u64);
+ oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = op;
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = regnum;
- cvmx_write_csr(p->register_base + SMI_CMD, smi_cmd.u64);
+ oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
do {
/* Wait 1000 clocks so we don't saturate the RSL bus
* doing reads.
*/
__delay(1000);
- smi_wr.u64 = cvmx_read_csr(p->register_base + SMI_WR_DAT);
+ smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);
} while (smi_wr.s.pending && --timeout);
if (timeout <= 0)
@@ -187,30 +277,34 @@ static int octeon_mdiobus_probe(struct platform_device *pdev)
return -ENOMEM;
res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
if (res_mem == NULL) {
dev_err(&pdev->dev, "found no memory resource\n");
- err = -ENXIO;
- goto fail;
+ return -ENXIO;
}
+
bus->mdio_phys = res_mem->start;
bus->regsize = resource_size(res_mem);
+
if (!devm_request_mem_region(&pdev->dev, bus->mdio_phys, bus->regsize,
res_mem->name)) {
dev_err(&pdev->dev, "request_mem_region failed\n");
- goto fail;
+ return -ENXIO;
}
+
bus->register_base =
(u64)devm_ioremap(&pdev->dev, bus->mdio_phys, bus->regsize);
+ if (!bus->register_base) {
+ dev_err(&pdev->dev, "dev_ioremap failed\n");
+ return -ENOMEM;
+ }
bus->mii_bus = mdiobus_alloc();
-
if (!bus->mii_bus)
goto fail;
smi_en.u64 = 0;
smi_en.s.en = 1;
- cvmx_write_csr(bus->register_base + SMI_EN, smi_en.u64);
+ oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN);
bus->mii_bus->priv = bus;
bus->mii_bus->irq = bus->phy_irq;
@@ -234,7 +328,7 @@ fail_register:
mdiobus_free(bus->mii_bus);
fail:
smi_en.u64 = 0;
- cvmx_write_csr(bus->register_base + SMI_EN, smi_en.u64);
+ oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN);
return err;
}
@@ -248,7 +342,7 @@ static int octeon_mdiobus_remove(struct platform_device *pdev)
mdiobus_unregister(bus->mii_bus);
mdiobus_free(bus->mii_bus);
smi_en.u64 = 0;
- cvmx_write_csr(bus->register_base + SMI_EN, smi_en.u64);
+ oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN);
return 0;
}
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