sfc: Move SPI state to struct falcon_nic_data

We only have direct access to SPI on Falcon, so move all this state
out of struct efx_nic.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index b4580c4..6aed6ac 100644 (file)
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -1961,7 +1961,6 @@ void efx_reset_down(struct efx_nic *efx, enum reset_type method)
 
        efx_stop_all(efx);
        mutex_lock(&efx->mac_lock);
-       mutex_lock(&efx->spi_lock);
 
        efx_fini_channels(efx);
        if (efx->port_initialized && method != RESET_TYPE_INVISIBLE)
@@ -2003,7 +2002,6 @@ int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok)
        efx_init_channels(efx);
        efx_restore_filters(efx);
 
-       mutex_unlock(&efx->spi_lock);
        mutex_unlock(&efx->mac_lock);
 
        efx_start_all(efx);
@@ -2013,7 +2011,6 @@ int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok)
 fail:
        efx->port_initialized = false;
 
-       mutex_unlock(&efx->spi_lock);
        mutex_unlock(&efx->mac_lock);
 
        return rc;
@@ -2202,7 +2199,6 @@ static int efx_init_struct(struct efx_nic *efx, struct efx_nic_type *type,
        memset(efx, 0, sizeof(*efx));
        spin_lock_init(&efx->biu_lock);
        mutex_init(&efx->mdio_lock);
-       mutex_init(&efx->spi_lock);
 #ifdef CONFIG_SFC_MTD
        INIT_LIST_HEAD(&efx->mtd_list);
 #endif

diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index fe15084..ca59f7e 100644 (file)
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -254,7 +254,6 @@ int falcon_spi_cmd(struct efx_nic *efx, const struct efx_spi_device *spi,
        /* Input validation */
        if (len > FALCON_SPI_MAX_LEN)
                return -EINVAL;
-       BUG_ON(!mutex_is_locked(&efx->spi_lock));
 
        /* Check that previous command is not still running */
        rc = falcon_spi_poll(efx);
@@ -888,6 +887,7 @@ static void falcon_remove_port(struct efx_nic *efx)
 static int
 falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out)
 {
+       struct falcon_nic_data *nic_data = efx->nic_data;
        struct falcon_nvconfig *nvconfig;
        struct efx_spi_device *spi;
        void *region;
@@ -895,8 +895,11 @@ falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out)
        __le16 *word, *limit;
        u32 csum;
 
-       spi = efx->spi_flash ? efx->spi_flash : efx->spi_eeprom;
-       if (!spi)
+       if (efx_spi_present(&nic_data->spi_flash))
+               spi = &nic_data->spi_flash;
+       else if (efx_spi_present(&nic_data->spi_eeprom))
+               spi = &nic_data->spi_eeprom;
+       else
                return -EINVAL;
 
        region = kmalloc(FALCON_NVCONFIG_END, GFP_KERNEL);
@@ -904,12 +907,13 @@ falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out)
                return -ENOMEM;
        nvconfig = region + FALCON_NVCONFIG_OFFSET;
 
-       mutex_lock(&efx->spi_lock);
+       mutex_lock(&nic_data->spi_lock);
        rc = falcon_spi_read(efx, spi, 0, FALCON_NVCONFIG_END, NULL, region);
-       mutex_unlock(&efx->spi_lock);
+       mutex_unlock(&nic_data->spi_lock);
        if (rc) {
                netif_err(efx, hw, efx->net_dev, "Failed to read %s\n",
-                         efx->spi_flash ? "flash" : "EEPROM");
+                         efx_spi_present(&nic_data->spi_flash) ?
+                         "flash" : "EEPROM");
                rc = -EIO;
                goto out;
        }
@@ -1011,7 +1015,7 @@ static int falcon_b0_test_registers(struct efx_nic *efx)
 
 /* Resets NIC to known state.  This routine must be called in process
  * context and is allowed to sleep. */
-static int falcon_reset_hw(struct efx_nic *efx, enum reset_type method)
+static int __falcon_reset_hw(struct efx_nic *efx, enum reset_type method)
 {
        struct falcon_nic_data *nic_data = efx->nic_data;
        efx_oword_t glb_ctl_reg_ker;
@@ -1107,6 +1111,18 @@ fail5:
        return rc;
 }
 
+static int falcon_reset_hw(struct efx_nic *efx, enum reset_type method)
+{
+       struct falcon_nic_data *nic_data = efx->nic_data;
+       int rc;
+
+       mutex_lock(&nic_data->spi_lock);
+       rc = __falcon_reset_hw(efx, method);
+       mutex_unlock(&nic_data->spi_lock);
+
+       return rc;
+}
+
 static void falcon_monitor(struct efx_nic *efx)
 {
        bool link_changed;
@@ -1188,16 +1204,11 @@ static int falcon_reset_sram(struct efx_nic *efx)
        return -ETIMEDOUT;
 }
 
-static int falcon_spi_device_init(struct efx_nic *efx,
-                                 struct efx_spi_device **spi_device_ret,
+static void falcon_spi_device_init(struct efx_nic *efx,
+                                 struct efx_spi_device *spi_device,
                                  unsigned int device_id, u32 device_type)
 {
-       struct efx_spi_device *spi_device;
-
        if (device_type != 0) {
-               spi_device = kzalloc(sizeof(*spi_device), GFP_KERNEL);
-               if (!spi_device)
-                       return -ENOMEM;
                spi_device->device_id = device_id;
                spi_device->size =
                        1 << SPI_DEV_TYPE_FIELD(device_type, SPI_DEV_TYPE_SIZE);
@@ -1214,25 +1225,14 @@ static int falcon_spi_device_init(struct efx_nic *efx,
                        1 << SPI_DEV_TYPE_FIELD(device_type,
                                                SPI_DEV_TYPE_BLOCK_SIZE);
        } else {
-               spi_device = NULL;
+               spi_device->size = 0;
        }
-
-       kfree(*spi_device_ret);
-       *spi_device_ret = spi_device;
-       return 0;
-}
-
-static void falcon_remove_spi_devices(struct efx_nic *efx)
-{
-       kfree(efx->spi_eeprom);
-       efx->spi_eeprom = NULL;
-       kfree(efx->spi_flash);
-       efx->spi_flash = NULL;
 }
 
 /* Extract non-volatile configuration */
 static int falcon_probe_nvconfig(struct efx_nic *efx)
 {
+       struct falcon_nic_data *nic_data = efx->nic_data;
        struct falcon_nvconfig *nvconfig;
        int rc;
 
@@ -1242,24 +1242,20 @@ static int falcon_probe_nvconfig(struct efx_nic *efx)
 
        rc = falcon_read_nvram(efx, nvconfig);
        if (rc)
-               goto fail1;
+               goto out;
 
        efx->phy_type = nvconfig->board_v2.port0_phy_type;
        efx->mdio.prtad = nvconfig->board_v2.port0_phy_addr;
 
        if (le16_to_cpu(nvconfig->board_struct_ver) >= 3) {
-               rc = falcon_spi_device_init(
-                       efx, &efx->spi_flash, FFE_AB_SPI_DEVICE_FLASH,
+               falcon_spi_device_init(
+                       efx, &nic_data->spi_flash, FFE_AB_SPI_DEVICE_FLASH,
                        le32_to_cpu(nvconfig->board_v3
                                    .spi_device_type[FFE_AB_SPI_DEVICE_FLASH]));
-               if (rc)
-                       goto fail2;
-               rc = falcon_spi_device_init(
-                       efx, &efx->spi_eeprom, FFE_AB_SPI_DEVICE_EEPROM,
+               falcon_spi_device_init(
+                       efx, &nic_data->spi_eeprom, FFE_AB_SPI_DEVICE_EEPROM,
                        le32_to_cpu(nvconfig->board_v3
                                    .spi_device_type[FFE_AB_SPI_DEVICE_EEPROM]));
-               if (rc)
-                       goto fail2;
        }
 
        /* Read the MAC addresses */
@@ -1270,15 +1266,7 @@ static int falcon_probe_nvconfig(struct efx_nic *efx)
 
        rc = falcon_probe_board(efx,
                                le16_to_cpu(nvconfig->board_v2.board_revision));
-       if (rc)
-               goto fail2;
-
-       kfree(nvconfig);
-       return 0;
-
- fail2:
-       falcon_remove_spi_devices(efx);
- fail1:
+out:
        kfree(nvconfig);
        return rc;
 }
@@ -1286,6 +1274,7 @@ static int falcon_probe_nvconfig(struct efx_nic *efx)
 /* Probe all SPI devices on the NIC */
 static void falcon_probe_spi_devices(struct efx_nic *efx)
 {
+       struct falcon_nic_data *nic_data = efx->nic_data;
        efx_oword_t nic_stat, gpio_ctl, ee_vpd_cfg;
        int boot_dev;
 
@@ -1314,12 +1303,14 @@ static void falcon_probe_spi_devices(struct efx_nic *efx)
                efx_writeo(efx, &ee_vpd_cfg, FR_AB_EE_VPD_CFG0);
        }
 
+       mutex_init(&nic_data->spi_lock);
+
        if (boot_dev == FFE_AB_SPI_DEVICE_FLASH)
-               falcon_spi_device_init(efx, &efx->spi_flash,
+               falcon_spi_device_init(efx, &nic_data->spi_flash,
                                       FFE_AB_SPI_DEVICE_FLASH,
                                       default_flash_type);
        if (boot_dev == FFE_AB_SPI_DEVICE_EEPROM)
-               falcon_spi_device_init(efx, &efx->spi_eeprom,
+               falcon_spi_device_init(efx, &nic_data->spi_eeprom,
                                       FFE_AB_SPI_DEVICE_EEPROM,
                                       large_eeprom_type);
 }
@@ -1384,7 +1375,7 @@ static int falcon_probe_nic(struct efx_nic *efx)
        }
 
        /* Now we can reset the NIC */
-       rc = falcon_reset_hw(efx, RESET_TYPE_ALL);
+       rc = __falcon_reset_hw(efx, RESET_TYPE_ALL);
        if (rc) {
                netif_err(efx, probe, efx->net_dev, "failed to reset NIC\n");
                goto fail3;
@@ -1442,7 +1433,6 @@ static int falcon_probe_nic(struct efx_nic *efx)
        BUG_ON(i2c_del_adapter(&board->i2c_adap));
        memset(&board->i2c_adap, 0, sizeof(board->i2c_adap));
  fail5:
-       falcon_remove_spi_devices(efx);
        efx_nic_free_buffer(efx, &efx->irq_status);
  fail4:
  fail3:
@@ -1596,10 +1586,9 @@ static void falcon_remove_nic(struct efx_nic *efx)
        BUG_ON(rc);
        memset(&board->i2c_adap, 0, sizeof(board->i2c_adap));
 
-       falcon_remove_spi_devices(efx);
        efx_nic_free_buffer(efx, &efx->irq_status);
 
-       falcon_reset_hw(efx, RESET_TYPE_ALL);
+       __falcon_reset_hw(efx, RESET_TYPE_ALL);
 
        /* Release the second function after the reset */
        if (nic_data->pci_dev2) {

diff --git a/drivers/net/sfc/mtd.c b/drivers/net/sfc/mtd.c
index d44c745..d386274 100644 (file)
--- a/drivers/net/sfc/mtd.c
+++ b/drivers/net/sfc/mtd.c
@@ -321,14 +321,15 @@ static int falcon_mtd_read(struct mtd_info *mtd, loff_t start,
        struct efx_mtd *efx_mtd = mtd->priv;
        const struct efx_spi_device *spi = efx_mtd->spi;
        struct efx_nic *efx = efx_mtd->efx;
+       struct falcon_nic_data *nic_data = efx->nic_data;
        int rc;
 
-       rc = mutex_lock_interruptible(&efx->spi_lock);
+       rc = mutex_lock_interruptible(&nic_data->spi_lock);
        if (rc)
                return rc;
        rc = falcon_spi_read(efx, spi, part->offset + start, len,
                             retlen, buffer);
-       mutex_unlock(&efx->spi_lock);
+       mutex_unlock(&nic_data->spi_lock);
        return rc;
 }
 
@@ -337,13 +338,14 @@ static int falcon_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len)
        struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
        struct efx_mtd *efx_mtd = mtd->priv;
        struct efx_nic *efx = efx_mtd->efx;
+       struct falcon_nic_data *nic_data = efx->nic_data;
        int rc;
 
-       rc = mutex_lock_interruptible(&efx->spi_lock);
+       rc = mutex_lock_interruptible(&nic_data->spi_lock);
        if (rc)
                return rc;
        rc = efx_spi_erase(part, part->offset + start, len);
-       mutex_unlock(&efx->spi_lock);
+       mutex_unlock(&nic_data->spi_lock);
        return rc;
 }
 
@@ -354,14 +356,15 @@ static int falcon_mtd_write(struct mtd_info *mtd, loff_t start,
        struct efx_mtd *efx_mtd = mtd->priv;
        const struct efx_spi_device *spi = efx_mtd->spi;
        struct efx_nic *efx = efx_mtd->efx;
+       struct falcon_nic_data *nic_data = efx->nic_data;
        int rc;
 
-       rc = mutex_lock_interruptible(&efx->spi_lock);
+       rc = mutex_lock_interruptible(&nic_data->spi_lock);
        if (rc)
                return rc;
        rc = falcon_spi_write(efx, spi, part->offset + start, len,
                              retlen, buffer);
-       mutex_unlock(&efx->spi_lock);
+       mutex_unlock(&nic_data->spi_lock);
        return rc;
 }
 
@@ -370,11 +373,12 @@ static int falcon_mtd_sync(struct mtd_info *mtd)
        struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
        struct efx_mtd *efx_mtd = mtd->priv;
        struct efx_nic *efx = efx_mtd->efx;
+       struct falcon_nic_data *nic_data = efx->nic_data;
        int rc;
 
-       mutex_lock(&efx->spi_lock);
+       mutex_lock(&nic_data->spi_lock);
        rc = efx_spi_slow_wait(part, true);
-       mutex_unlock(&efx->spi_lock);
+       mutex_unlock(&nic_data->spi_lock);
        return rc;
 }
 
@@ -387,14 +391,15 @@ static struct efx_mtd_ops falcon_mtd_ops = {
 
 static int falcon_mtd_probe(struct efx_nic *efx)
 {
+       struct falcon_nic_data *nic_data = efx->nic_data;
        struct efx_spi_device *spi;
        struct efx_mtd *efx_mtd;
        int rc = -ENODEV;
 
        ASSERT_RTNL();
 
-       spi = efx->spi_flash;
-       if (spi && spi->size > FALCON_FLASH_BOOTCODE_START) {
+       spi = &nic_data->spi_flash;
+       if (efx_spi_present(spi) && spi->size > FALCON_FLASH_BOOTCODE_START) {
                efx_mtd = kzalloc(sizeof(*efx_mtd) + sizeof(efx_mtd->part[0]),
                                  GFP_KERNEL);
                if (!efx_mtd)
@@ -419,8 +424,8 @@ static int falcon_mtd_probe(struct efx_nic *efx)
                }
        }
 
-       spi = efx->spi_eeprom;
-       if (spi && spi->size > EFX_EEPROM_BOOTCONFIG_START) {
+       spi = &nic_data->spi_eeprom;
+       if (efx_spi_present(spi) && spi->size > EFX_EEPROM_BOOTCONFIG_START) {
                efx_mtd = kzalloc(sizeof(*efx_mtd) + sizeof(efx_mtd->part[0]),
                                  GFP_KERNEL);
                if (!efx_mtd)

diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 0a7e26d..e5ee2d5 100644 (file)
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -657,11 +657,6 @@ struct efx_filter_state;
  *     to verify that an interrupt has occurred.
  * @irq_zero_count: Number of legacy IRQs seen with queue flags == 0
  * @fatal_irq_level: IRQ level (bit number) used for serious errors
- * @spi_flash: SPI flash device
- *     This field will be %NULL if no flash device is present (or for Siena).
- * @spi_eeprom: SPI EEPROM device
- *     This field will be %NULL if no EEPROM device is present (or for Siena).
- * @spi_lock: SPI bus lock
  * @mtd_list: List of MTDs attached to the NIC
  * @n_rx_nodesc_drop_cnt: RX no descriptor drop count
  * @nic_data: Hardware dependant state
@@ -746,9 +741,6 @@ struct efx_nic {
        unsigned irq_zero_count;
        unsigned fatal_irq_level;
 
-       struct efx_spi_device *spi_flash;
-       struct efx_spi_device *spi_eeprom;
-       struct mutex spi_lock;
 #ifdef CONFIG_SFC_MTD
        struct list_head mtd_list;
 #endif

diff --git a/drivers/net/sfc/nic.h b/drivers/net/sfc/nic.h
index 0438dc9..2a0fff3 100644 (file)
--- a/drivers/net/sfc/nic.h
+++ b/drivers/net/sfc/nic.h
@@ -15,6 +15,7 @@
 #include "net_driver.h"
 #include "efx.h"
 #include "mcdi.h"
+#include "spi.h"
 
 /*
  * Falcon hardware control
@@ -113,6 +114,9 @@ struct falcon_board {
  * @stats_pending: Is there a pending DMA of MAC statistics.
  * @stats_timer: A timer for regularly fetching MAC statistics.
  * @stats_dma_done: Pointer to the flag which indicates DMA completion.
+ * @spi_flash: SPI flash device
+ * @spi_eeprom: SPI EEPROM device
+ * @spi_lock: SPI bus lock
  */
 struct falcon_nic_data {
        struct pci_dev *pci_dev2;
@@ -121,6 +125,9 @@ struct falcon_nic_data {
        bool stats_pending;
        struct timer_list stats_timer;
        u32 *stats_dma_done;
+       struct efx_spi_device spi_flash;
+       struct efx_spi_device spi_eeprom;
+       struct mutex spi_lock;
 };
 
 static inline struct falcon_board *falcon_board(struct efx_nic *efx)

diff --git a/drivers/net/sfc/spi.h b/drivers/net/sfc/spi.h
index 8bf4fce..879b7f6 100644 (file)
--- a/drivers/net/sfc/spi.h
+++ b/drivers/net/sfc/spi.h
@@ -61,6 +61,11 @@ struct efx_spi_device {
        unsigned int block_size;
 };
 
+static inline bool efx_spi_present(const struct efx_spi_device *spi)
+{
+       return spi->size != 0;
+}
+
 int falcon_spi_cmd(struct efx_nic *efx,
                   const struct efx_spi_device *spi, unsigned int command,
                   int address, const void* in, void *out, size_t len);