sfc: Move MTD operations into efx_nic_type

Merge the per-NIC-type MTD probe selection and struct efx_mtd_ops into
struct efx_nic_type.  Move the implementations into the appropriate
source files.

Several NVRAM functions are now only called from MTD operations which
are now implemented in the same file (falcon.c or mcdi.c).  There is no
need for them to be extern, or to be defined at all if CONFIG_SFC_MTD
is not enabled, so move them into the #ifdef CONFIG_SFC_MTD sections
in those files.

Most of the SPI-related definitions are also only used in falcon.c,
so move them there.  Put the remainder of spi.h into nic.h (which
previously included it).

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 140 insertions, 1 deletions

diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index 1be81e431f07..11b4739b1705 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -18,7 +18,6 @@
 #include "bitfield.h"
 #include "efx.h"
 #include "nic.h"
-#include "spi.h"
 #include "farch_regs.h"
 #include "io.h"
 #include "phy.h"
@@ -674,6 +673,138 @@ static int siena_mcdi_poll_reboot(struct efx_nic *efx)
 
 /**************************************************************************
  *
+ * MTD
+ *
+ **************************************************************************
+ */
+
+#ifdef CONFIG_SFC_MTD
+
+struct siena_nvram_type_info {
+	int port;
+	const char *name;
+};
+
+static const struct siena_nvram_type_info siena_nvram_types[] = {
+	[MC_CMD_NVRAM_TYPE_DISABLED_CALLISTO]	= { 0, "sfc_dummy_phy" },
+	[MC_CMD_NVRAM_TYPE_MC_FW]		= { 0, "sfc_mcfw" },
+	[MC_CMD_NVRAM_TYPE_MC_FW_BACKUP]	= { 0, "sfc_mcfw_backup" },
+	[MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT0]	= { 0, "sfc_static_cfg" },
+	[MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT1]	= { 1, "sfc_static_cfg" },
+	[MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0]	= { 0, "sfc_dynamic_cfg" },
+	[MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1]	= { 1, "sfc_dynamic_cfg" },
+	[MC_CMD_NVRAM_TYPE_EXP_ROM]		= { 0, "sfc_exp_rom" },
+	[MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT0]	= { 0, "sfc_exp_rom_cfg" },
+	[MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT1]	= { 1, "sfc_exp_rom_cfg" },
+	[MC_CMD_NVRAM_TYPE_PHY_PORT0]		= { 0, "sfc_phy_fw" },
+	[MC_CMD_NVRAM_TYPE_PHY_PORT1]		= { 1, "sfc_phy_fw" },
+	[MC_CMD_NVRAM_TYPE_FPGA]		= { 0, "sfc_fpga" },
+};
+
+static int siena_mtd_probe_partition(struct efx_nic *efx,
+				     struct efx_mcdi_mtd_partition *part,
+				     unsigned int type)
+{
+	const struct siena_nvram_type_info *info;
+	size_t size, erase_size;
+	bool protected;
+	int rc;
+
+	if (type >= ARRAY_SIZE(siena_nvram_types) ||
+	    siena_nvram_types[type].name == NULL)
+		return -ENODEV;
+
+	info = &siena_nvram_types[type];
+
+	if (info->port != efx_port_num(efx))
+		return -ENODEV;
+
+	rc = efx_mcdi_nvram_info(efx, type, &size, &erase_size, &protected);
+	if (rc)
+		return rc;
+	if (protected)
+		return -ENODEV; /* hide it */
+
+	part->nvram_type = type;
+	part->common.dev_type_name = "Siena NVRAM manager";
+	part->common.type_name = info->name;
+
+	part->common.mtd.type = MTD_NORFLASH;
+	part->common.mtd.flags = MTD_CAP_NORFLASH;
+	part->common.mtd.size = size;
+	part->common.mtd.erasesize = erase_size;
+
+	return 0;
+}
+
+static int siena_mtd_get_fw_subtypes(struct efx_nic *efx,
+				     struct efx_mcdi_mtd_partition *parts,
+				     size_t n_parts)
+{
+	uint16_t fw_subtype_list[
+		MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_MAXNUM];
+	size_t i;
+	int rc;
+
+	rc = efx_mcdi_get_board_cfg(efx, NULL, fw_subtype_list, NULL);
+	if (rc)
+		return rc;
+
+	for (i = 0; i < n_parts; i++)
+		parts[i].fw_subtype = fw_subtype_list[parts[i].nvram_type];
+
+	return 0;
+}
+
+static int siena_mtd_probe(struct efx_nic *efx)
+{
+	struct efx_mcdi_mtd_partition *parts;
+	u32 nvram_types;
+	unsigned int type;
+	size_t n_parts;
+	int rc;
+
+	ASSERT_RTNL();
+
+	rc = efx_mcdi_nvram_types(efx, &nvram_types);
+	if (rc)
+		return rc;
+
+	parts = kcalloc(hweight32(nvram_types), sizeof(*parts), GFP_KERNEL);
+	if (!parts)
+		return -ENOMEM;
+
+	type = 0;
+	n_parts = 0;
+
+	while (nvram_types != 0) {
+		if (nvram_types & 1) {
+			rc = siena_mtd_probe_partition(efx, &parts[n_parts],
+						       type);
+			if (rc == 0)
+				n_parts++;
+			else if (rc != -ENODEV)
+				goto fail;
+		}
+		type++;
+		nvram_types >>= 1;
+	}
+
+	rc = siena_mtd_get_fw_subtypes(efx, parts, n_parts);
+	if (rc)
+		goto fail;
+
+	rc = efx_mtd_add(efx, &parts[0].common, n_parts, sizeof(*parts));
+fail:
+	if (rc)
+		kfree(parts);
+	return rc;
+}
+
+#endif /* CONFIG_SFC_MTD */
+
+/**************************************************************************
+ *
  * Revision-dependent attributes used by efx.c and nic.c
  *
  **************************************************************************
@@ -753,6 +884,14 @@ const struct efx_nic_type siena_a0_nic_type = {
 	.filter_rfs_insert = efx_farch_filter_rfs_insert,
 	.filter_rfs_expire_one = efx_farch_filter_rfs_expire_one,
 #endif
+#ifdef CONFIG_SFC_MTD
+	.mtd_probe = siena_mtd_probe,
+	.mtd_rename = efx_mcdi_mtd_rename,
+	.mtd_read = efx_mcdi_mtd_read,
+	.mtd_erase = efx_mcdi_mtd_erase,
+	.mtd_write = efx_mcdi_mtd_write,
+	.mtd_sync = efx_mcdi_mtd_sync,
+#endif
 
 	.revision = EFX_REV_SIENA_A0,
 	.txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,