* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/of_address.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/of_platform.h>
-#include <linux/io.h>
-#include <linux/ssb/ssb.h>
-#include <linux/bcma/bcma.h>
#include <linux/bcm47xx_nvram.h>
-#include <linux/if_ether.h>
+#include <linux/bcma/bcma.h>
#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/ssb/ssb.h>
static void create_key(const char *prefix, const char *postfix,
const char *name, char *buf, int len)
}
#define NVRAM_READ_VAL(type) \
-static void nvram_read_ ## type (const char *prefix, \
- const char *postfix, const char *name, \
- type *val, type allset, bool fallback) \
+static void nvram_read_ ## type(const char *prefix, \
+ const char *postfix, const char *name, \
+ type *val, type allset, bool fallback) \
{ \
char buf[100]; \
int err; \
int i;
for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
- struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
+ struct ssb_sprom_core_pwr_info *pwr_info;
+
+ pwr_info = &sprom->core_pwr_info[i];
+
snprintf(postfix, sizeof(postfix), "%i", i);
nvram_read_u8(prefix, postfix, "maxp2ga",
&pwr_info->maxpwr_2g, 0, fallback);
int i;
for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
- struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
+ struct ssb_sprom_core_pwr_info *pwr_info;
+
+ pwr_info = &sprom->core_pwr_info[i];
+
snprintf(postfix, sizeof(postfix), "%i", i);
nvram_read_u16(prefix, postfix, "pa2gw3a",
&pwr_info->pa_2g[3], 0, fallback);
nvram_read_macaddr(prefix, "il0macaddr", sprom->il0mac, fallback);
/* The address prefix 00:90:4C is used by Broadcom in their initial
- configuration. When a mac address with the prefix 00:90:4C is used
- all devices from the same series are sharing the same mac address.
- To prevent mac address collisions we replace them with a mac address
- based on the base address. */
+ * configuration. When a mac address with the prefix 00:90:4C is used
+ * all devices from the same series are sharing the same mac address.
+ * To prevent mac address collisions we replace them with a mac address
+ * based on the base address.
+ */
if (!bcm47xx_is_valid_mac(sprom->il0mac)) {
u8 mac[6];
bcm47xx_sprom_fill_auto(sprom, prefix, fallback);
}
+#if defined(CONFIG_SSB_SPROM)
+static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
+{
+ char prefix[10];
+
+ switch (bus->bustype) {
+ case SSB_BUSTYPE_SSB:
+ bcm47xx_fill_sprom(out, NULL, false);
+ return 0;
+ case SSB_BUSTYPE_PCI:
+ memset(out, 0, sizeof(struct ssb_sprom));
+ snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
+ bus->host_pci->bus->number + 1,
+ PCI_SLOT(bus->host_pci->devfn));
+ bcm47xx_fill_sprom(out, prefix, false);
+ return 0;
+ default:
+ pr_warn("Unable to fill SPROM for given bustype.\n");
+ return -EINVAL;
+ }
+}
+#endif
+
+#if defined(CONFIG_BCMA)
/*
* Having many NVRAM entries for PCI devices led to repeating prefixes like
* pci/1/1/ all the time and wasting flash space. So at some point Broadcom
char buf[20];
int i;
+ /* Passed prefix has to end with a slash */
if (prefix_len <= 0 || prefix[prefix_len - 1] != '/')
return;
}
}
-/*
- * This function has to be called in a very precise moment. It has to be done:
- * 1) After bcma registers flash cores, so we can read NVRAM.
- * 2) Before any code needs SPROM content.
- *
- * This can be achieved only by using bcma callback.
- */
-static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
+static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
{
- char prefix[20];
+ struct bcma_boardinfo *binfo = &bus->boardinfo;
+ struct bcma_device *core;
+ char buf[10];
+ char *prefix;
+ bool fallback = false;
switch (bus->hosttype) {
case BCMA_HOSTTYPE_PCI:
- snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
- pci_domain_nr(bus->host_pci->bus) + 1,
- bus->host_pci->bus->number);
- bcm47xx_sprom_apply_prefix_alias(prefix, sizeof(prefix));
- bcm47xx_fill_sprom(out, prefix, false);
+ memset(out, 0, sizeof(struct ssb_sprom));
+ /* On BCM47XX all PCI buses share the same domain */
+ if (config_enabled(CONFIG_BCM47XX))
+ snprintf(buf, sizeof(buf), "pci/%u/%u/",
+ bus->host_pci->bus->number + 1,
+ PCI_SLOT(bus->host_pci->devfn));
+ else
+ snprintf(buf, sizeof(buf), "pci/%u/%u/",
+ pci_domain_nr(bus->host_pci->bus) + 1,
+ bus->host_pci->bus->number);
+ bcm47xx_sprom_apply_prefix_alias(buf, sizeof(buf));
+ prefix = buf;
break;
case BCMA_HOSTTYPE_SOC:
- bcm47xx_fill_sprom(out, NULL, false);
+ memset(out, 0, sizeof(struct ssb_sprom));
+ core = bcma_find_core(bus, BCMA_CORE_80211);
+ if (core) {
+ snprintf(buf, sizeof(buf), "sb/%u/",
+ core->core_index);
+ prefix = buf;
+ fallback = true;
+ } else {
+ prefix = NULL;
+ }
break;
default:
- pr_err("Unable to fill SPROM for given hosttype.\n");
+ pr_warn("Unable to fill SPROM for given bustype.\n");
return -EINVAL;
}
+ nvram_read_u16(prefix, NULL, "boardvendor", &binfo->vendor, 0, true);
+ if (!binfo->vendor)
+ binfo->vendor = SSB_BOARDVENDOR_BCM;
+ nvram_read_u16(prefix, NULL, "boardtype", &binfo->type, 0, true);
+
+ bcm47xx_fill_sprom(out, prefix, fallback);
+
return 0;
-};
+}
+#endif
+
+static unsigned int bcm47xx_sprom_registered;
-static int bcm47xx_sprom_probe(struct platform_device *pdev)
+/*
+ * On bcm47xx we need to register SPROM fallback handler very early, so we can't
+ * use anything like platform device / driver for this.
+ */
+int bcm47xx_sprom_register_fallbacks(void)
{
- return bcma_arch_register_fallback_sprom(&bcm47xx_sprom_init);
+ if (bcm47xx_sprom_registered)
+ return 0;
+
+#if defined(CONFIG_SSB_SPROM)
+ if (ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb))
+ pr_warn("Failed to registered ssb SPROM handler\n");
+#endif
+
+#if defined(CONFIG_BCMA)
+ if (bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma))
+ pr_warn("Failed to registered bcma SPROM handler\n");
+#endif
+
+ bcm47xx_sprom_registered = 1;
+
+ return 0;
}
-static const struct of_device_id bcm47xx_sprom_of_match_table[] = {
- { .compatible = "brcm,bcm47xx-sprom", },
- {},
-};
-MODULE_DEVICE_TABLE(of, bcm47xx_sprom_of_match_table);
-
-static struct platform_driver bcm47xx_sprom_driver = {
- .driver = {
- .owner = THIS_MODULE,
- .name = "bcm47xx-sprom",
- .of_match_table = bcm47xx_sprom_of_match_table,
- /* driver unloading/unbinding currently not supported */
- .suppress_bind_attrs = true,
- },
- .probe = bcm47xx_sprom_probe,
-};
-module_platform_driver(bcm47xx_sprom_driver);
-
-MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
-MODULE_LICENSE("GPL v2");
+fs_initcall(bcm47xx_sprom_register_fallbacks);
+++ /dev/null
-From 4e0ab3269a6d260a41a3673157753147f5f71341 Mon Sep 17 00:00:00 2001
-From: Hauke Mehrtens <hauke@hauke-m.de>
-Date: Sun, 4 May 2014 13:19:20 +0200
-Subject: [PATCH 03/17] bcm47xx-sprom: add Broadcom sprom parser driver
-
-This driver needs an nvram driver and fetches the sprom values from the
-nvram and provides it to any other driver. The calibration data for the
-wifi chip the mac address and some more board description data is
-stores in the sprom.
-
-This is based on a copy of arch/mips/bcm47xx/sprom.c and my plan is to
-make the bcm47xx MIPS SoCs also use this driver some time later.
-
-Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
----
- .../devicetree/bindings/misc/bcm47xx-sprom.txt | 16 +
- drivers/misc/Kconfig | 11 +
- drivers/misc/Makefile | 1 +
- drivers/misc/bcm47xx-sprom.c | 690 +++++++++++++++++++++
- 4 files changed, 718 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
- create mode 100644 drivers/misc/bcm47xx-sprom.c
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
-@@ -0,0 +1,16 @@
-+Broadcom bcm47xx/bcm53xx sprom converter
-+
-+This driver provbides an sprom based on a given nvram.
-+
-+Required properties:
-+
-+- compatible : brcm,bcm47xx-sprom
-+
-+- nvram : reference to a nvram driver, e.g. bcm47xx-nvram
-+
-+Example:
-+
-+sprom0: sprom@0 {
-+ compatible = "brcm,bcm47xx-sprom";
-+ nvram = <&nvram0>;
-+};
---- a/drivers/misc/Kconfig
-+++ b/drivers/misc/Kconfig
-@@ -515,6 +515,17 @@ config VEXPRESS_SYSCFG
- bus. System Configuration interface is one of the possible means
- of generating transactions on this bus.
-
-+config BCM47XX_SPROM
-+ tristate "BCM47XX sprom driver"
-+ help
-+ This driver parses the sprom from a given nvram which is found on
-+ Broadcom bcm47xx and bcm53xx SoCs.
-+
-+ The sprom contains board configuration data like the
-+ calibration data fro the wifi chips, the mac addresses used
-+ by the board and many other board configuration data. This
-+ driver will provide the sprom to bcma.
-+
- source "drivers/misc/c2port/Kconfig"
- source "drivers/misc/eeprom/Kconfig"
- source "drivers/misc/cb710/Kconfig"
---- a/drivers/misc/Makefile
-+++ b/drivers/misc/Makefile
-@@ -56,3 +56,4 @@ obj-$(CONFIG_GENWQE) += genwqe/
- obj-$(CONFIG_ECHO) += echo/
- obj-$(CONFIG_VEXPRESS_SYSCFG) += vexpress-syscfg.o
- obj-$(CONFIG_CXL_BASE) += cxl/
-+obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx-sprom.o
create mode 100644 Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
create mode 100644 drivers/misc/bcm47xx-sprom.c
---- /dev/null
-+++ b/Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
-@@ -0,0 +1,16 @@
-+Broadcom bcm47xx/bcm53xx sprom converter
+--- a/drivers/firmware/broadcom/Kconfig
++++ b/drivers/firmware/broadcom/Kconfig
+@@ -9,3 +9,14 @@ config BCM47XX_NVRAM
+ This driver provides an easy way to get value of requested parameter.
+ It simply reads content of NVRAM and parses it. It doesn't control any
+ hardware part itself.
+
-+This driver provbides an sprom based on a given nvram.
-+
-+Required properties:
-+
-+- compatible : brcm,bcm47xx-sprom
-+
-+- nvram : reference to a nvram driver, e.g. bcm47xx-nvram
-+
-+Example:
-+
-+sprom0: sprom@0 {
-+ compatible = "brcm,bcm47xx-sprom";
-+ nvram = <&nvram0>;
-+};
---- a/drivers/misc/Kconfig
-+++ b/drivers/misc/Kconfig
-@@ -525,6 +525,17 @@ config VEXPRESS_SYSCFG
- bus. System Configuration interface is one of the possible means
- of generating transactions on this bus.
-
+config BCM47XX_SPROM
-+ tristate "BCM47XX sprom driver"
++ bool "Broadcom SPROM driver"
++ depends on BCM47XX_NVRAM
+ help
-+ This driver parses the sprom from a given nvram which is found on
-+ Broadcom bcm47xx and bcm53xx SoCs.
-+
-+ The sprom contains board configuration data like the
-+ calibration data fro the wifi chips, the mac addresses used
-+ by the board and many other board configuration data. This
-+ driver will provide the sprom to bcma.
-+
- source "drivers/misc/c2port/Kconfig"
- source "drivers/misc/eeprom/Kconfig"
- source "drivers/misc/cb710/Kconfig"
---- a/drivers/misc/Makefile
-+++ b/drivers/misc/Makefile
-@@ -56,3 +56,4 @@ obj-$(CONFIG_GENWQE) += genwqe/
- obj-$(CONFIG_ECHO) += echo/
- obj-$(CONFIG_VEXPRESS_SYSCFG) += vexpress-syscfg.o
- obj-$(CONFIG_CXL_BASE) += cxl/
-+obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx-sprom.o
++ Broadcom devices store configuration data in SPROM. Accessing it is
++ specific to the bus host type, e.g. PCI(e) devices have it mapped in
++ a PCI BAR.
++ In case of SoC devices SPROM content is stored on a flash used by
++ bootloader firmware CFE. This driver provides method to ssb and bcma
++ drivers to read SPROM on SoC.
+--- a/drivers/firmware/broadcom/Makefile
++++ b/drivers/firmware/broadcom/Makefile
+@@ -1 +1,2 @@
+ obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx_nvram.o
++obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx_sprom.o
projects / thirdparty / openwrt.git / commitdiff
