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freebsd-skq/sys/mips/cavium/octe/ethernet-rgmii.c

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Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
/*************************************************************************
Copyright (c) 2003-2007 Cavium Networks (support@cavium.com). All rights
reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Cavium Networks nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written
permission.
This Software, including technical data, may be subject to U.S. export control laws, including the U.S. Export Administration Act and its associated regulations, and may be subject to export or import regulations in other countries.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
*************************************************************************/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <net/ethernet.h>
#include <net/if.h>
#include "wrapper-cvmx-includes.h"
#include "ethernet-headers.h"
#include "octebusvar.h"
extern int octeon_is_simulation(void);
extern struct ifnet *cvm_oct_device[];
static struct mtx global_register_lock;
MTX_SYSINIT(global_register_lock, &global_register_lock,
"RGMII Global", MTX_SPIN);
static int number_rgmii_ports;
static void cvm_oct_rgmii_poll(struct ifnet *ifp)
{
cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
cvmx_helper_link_info_t link_info;
/* Take the global register lock since we are going to touch
registers that affect more than one port */
mtx_lock_spin(&global_register_lock);
link_info = cvmx_helper_link_get(priv->port);
if (link_info.u64 == priv->link_info) {
/* If the 10Mbps preamble workaround is supported and we're
at 10Mbps we may need to do some special checking */
if (USE_10MBPS_PREAMBLE_WORKAROUND && (link_info.s.speed == 10)) {
/* Read the GMXX_RXX_INT_REG[PCTERR] bit and
see if we are getting preamble errors */
int interface = INTERFACE(priv->port);
int index = INDEX(priv->port);
cvmx_gmxx_rxx_int_reg_t gmxx_rxx_int_reg;
gmxx_rxx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, interface));
if (gmxx_rxx_int_reg.s.pcterr) {
/* We are getting preamble errors at 10Mbps.
Most likely the PHY is giving us packets
with mis aligned preambles. In order to get
these packets we need to disable preamble
checking and do it in software */
cvmx_gmxx_rxx_frm_ctl_t gmxx_rxx_frm_ctl;
cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs;
/* Disable preamble checking */
gmxx_rxx_frm_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface));
gmxx_rxx_frm_ctl.s.pre_chk = 0;
cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface), gmxx_rxx_frm_ctl.u64);
/* Disable FCS stripping */
ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
ipd_sub_port_fcs.s.port_bit &= 0xffffffffull ^ (1ull<<priv->port);
cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
/* Clear any error bits */
cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), gmxx_rxx_int_reg.u64);
DEBUGPRINT("%s: Using 10Mbps with software preamble removal\n", if_name(ifp));
}
}
mtx_unlock_spin(&global_register_lock);
return;
}
/* If the 10Mbps preamble workaround is allowed we need to on
preamble checking, FCS stripping, and clear error bits on
every speed change. If errors occur during 10Mbps operation
the above code will change this stuff */
if (USE_10MBPS_PREAMBLE_WORKAROUND) {
cvmx_gmxx_rxx_frm_ctl_t gmxx_rxx_frm_ctl;
cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs;
cvmx_gmxx_rxx_int_reg_t gmxx_rxx_int_reg;
int interface = INTERFACE(priv->port);
int index = INDEX(priv->port);
/* Enable preamble checking */
gmxx_rxx_frm_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface));
gmxx_rxx_frm_ctl.s.pre_chk = 1;
cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface), gmxx_rxx_frm_ctl.u64);
/* Enable FCS stripping */
ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
ipd_sub_port_fcs.s.port_bit |= 1ull<<priv->port;
cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
/* Clear any error bits */
gmxx_rxx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, interface));
cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), gmxx_rxx_int_reg.u64);
}
Run all poll requests through a single function that can either do the generic link state polling or media-specific ones, while avoidiing changing link state on interfaces that use miibus; this substantially speeds up link time on interface (re)initialization.
2010-11-30 07:14:05 +00:00
if (priv->miibus == NULL) {
link_info = cvmx_helper_link_autoconf(priv->port);
priv->link_info = link_info.u64;
priv->need_link_update = 1;
}
Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
mtx_unlock_spin(&global_register_lock);
}
static int cvm_oct_rgmii_rml_interrupt(void *dev_id)
{
cvmx_npi_rsl_int_blocks_t rsl_int_blocks;
int index;
int return_status = FILTER_STRAY;
rsl_int_blocks.u64 = cvmx_read_csr(CVMX_NPI_RSL_INT_BLOCKS);
/* Check and see if this interrupt was caused by the GMX0 block */
if (rsl_int_blocks.s.gmx0) {
int interface = 0;
/* Loop through every port of this interface */
for (index = 0; index < cvmx_helper_ports_on_interface(interface); index++) {
/* Read the GMX interrupt status bits */
cvmx_gmxx_rxx_int_reg_t gmx_rx_int_reg;
gmx_rx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, interface));
gmx_rx_int_reg.u64 &= cvmx_read_csr(CVMX_GMXX_RXX_INT_EN(index, interface));
/* Poll the port if inband status changed */
if (gmx_rx_int_reg.s.phy_dupx || gmx_rx_int_reg.s.phy_link || gmx_rx_int_reg.s.phy_spd) {
struct ifnet *ifp = cvm_oct_device[cvmx_helper_get_ipd_port(interface, index)];
if (ifp)
cvm_oct_rgmii_poll(ifp);
gmx_rx_int_reg.u64 = 0;
gmx_rx_int_reg.s.phy_dupx = 1;
gmx_rx_int_reg.s.phy_link = 1;
gmx_rx_int_reg.s.phy_spd = 1;
cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), gmx_rx_int_reg.u64);
return_status = FILTER_HANDLED;
}
}
}
/* Check and see if this interrupt was caused by the GMX1 block */
if (rsl_int_blocks.s.gmx1) {
int interface = 1;
/* Loop through every port of this interface */
for (index = 0; index < cvmx_helper_ports_on_interface(interface); index++) {
/* Read the GMX interrupt status bits */
cvmx_gmxx_rxx_int_reg_t gmx_rx_int_reg;
gmx_rx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, interface));
gmx_rx_int_reg.u64 &= cvmx_read_csr(CVMX_GMXX_RXX_INT_EN(index, interface));
/* Poll the port if inband status changed */
if (gmx_rx_int_reg.s.phy_dupx || gmx_rx_int_reg.s.phy_link || gmx_rx_int_reg.s.phy_spd) {
struct ifnet *ifp = cvm_oct_device[cvmx_helper_get_ipd_port(interface, index)];
if (ifp)
cvm_oct_rgmii_poll(ifp);
gmx_rx_int_reg.u64 = 0;
gmx_rx_int_reg.s.phy_dupx = 1;
gmx_rx_int_reg.s.phy_link = 1;
gmx_rx_int_reg.s.phy_spd = 1;
cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), gmx_rx_int_reg.u64);
return_status = FILTER_HANDLED;
}
}
}
return return_status;
}
int cvm_oct_rgmii_init(struct ifnet *ifp)
{
struct octebus_softc *sc;
cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
int error;
int rid;
cvm_oct_common_init(ifp);
Run all poll requests through a single function that can either do the generic link state polling or media-specific ones, while avoidiing changing link state on interfaces that use miibus; this substantially speeds up link time on interface (re)initialization.
2010-11-30 07:14:05 +00:00
priv->open = cvm_oct_common_open;
priv->stop = cvm_oct_common_stop;
Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
priv->stop(ifp);
/* Due to GMX errata in CN3XXX series chips, it is necessary to take the
link down immediately whne the PHY changes state. In order to do this
we call the poll function every time the RGMII inband status changes.
This may cause problems if the PHY doesn't implement inband status
properly */
if (number_rgmii_ports == 0) {
sc = device_get_softc(device_get_parent(priv->dev));
rid = 0;
sc->sc_rgmii_irq = bus_alloc_resource(sc->sc_dev, SYS_RES_IRQ,
&rid, CVMX_IRQ_RML,
CVMX_IRQ_RML, 1,
RF_ACTIVE);
if (sc->sc_rgmii_irq == NULL) {
device_printf(sc->sc_dev, "could not allocate RGMII irq");
return ENXIO;
}
error = bus_setup_intr(sc->sc_dev, sc->sc_rgmii_irq,
INTR_TYPE_NET | INTR_MPSAFE,
cvm_oct_rgmii_rml_interrupt, NULL,
&number_rgmii_ports, NULL);
if (error != 0) {
device_printf(sc->sc_dev, "could not setup RGMII irq");
return error;
}
}
number_rgmii_ports++;
/* Only true RGMII ports need to be polled. In GMII mode, port 0 is really
a RGMII port */
if (((priv->imode == CVMX_HELPER_INTERFACE_MODE_GMII) && (priv->port == 0)) ||
(priv->imode == CVMX_HELPER_INTERFACE_MODE_RGMII)) {
if (!octeon_is_simulation()) {
cvmx_gmxx_rxx_int_en_t gmx_rx_int_en;
int interface = INTERFACE(priv->port);
int index = INDEX(priv->port);
/* Enable interrupts on inband status changes for this port */
gmx_rx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_EN(index, interface));
gmx_rx_int_en.s.phy_dupx = 1;
gmx_rx_int_en.s.phy_link = 1;
gmx_rx_int_en.s.phy_spd = 1;
cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(index, interface), gmx_rx_int_en.u64);
priv->poll = cvm_oct_rgmii_poll;
}
}
return 0;
}
void cvm_oct_rgmii_uninit(struct ifnet *ifp)
{
cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
cvm_oct_common_uninit(ifp);
/* Only true RGMII ports need to be polled. In GMII mode, port 0 is really
a RGMII port */
if (((priv->imode == CVMX_HELPER_INTERFACE_MODE_GMII) && (priv->port == 0)) ||
(priv->imode == CVMX_HELPER_INTERFACE_MODE_RGMII)) {
if (!octeon_is_simulation()) {
cvmx_gmxx_rxx_int_en_t gmx_rx_int_en;
int interface = INTERFACE(priv->port);
int index = INDEX(priv->port);
/* Disable interrupts on inband status changes for this port */
gmx_rx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_EN(index, interface));
gmx_rx_int_en.s.phy_dupx = 0;
gmx_rx_int_en.s.phy_link = 0;
gmx_rx_int_en.s.phy_spd = 0;
cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(index, interface), gmx_rx_int_en.u64);
}
}
/* Remove the interrupt handler when the last port is removed */
number_rgmii_ports--;
if (number_rgmii_ports == 0)
panic("%s: need to implement IRQ release.", __func__);
}
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