diff options
Diffstat (limited to 'drivers/staging/wilc1000/wilc_exported_buf.c')
-rw-r--r-- | drivers/staging/wilc1000/wilc_exported_buf.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/staging/wilc1000/wilc_exported_buf.c b/drivers/staging/wilc1000/wilc_exported_buf.c new file mode 100644 index 000000000..529457816 --- /dev/null +++ b/drivers/staging/wilc1000/wilc_exported_buf.c @@ -0,0 +1,76 @@ +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/slab.h> + +#define LINUX_RX_SIZE (96 * 1024) +#define LINUX_TX_SIZE (64 * 1024) +#define WILC1000_FW_SIZE (4 * 1024) + +#define DECLARE_WILC_BUFFER(name) \ + void *exported_ ## name = NULL; + +#define MALLOC_WILC_BUFFER(name, size) \ + exported_ ## name = kmalloc(size, GFP_KERNEL); \ + if (!exported_ ## name) { \ + printk("fail to alloc: %s memory\n", exported_ ## name); \ + return -ENOBUFS; \ + } + +#define FREE_WILC_BUFFER(name) \ + kfree(exported_ ## name); + +/* + * Add necessary buffer pointers + */ +DECLARE_WILC_BUFFER(g_tx_buf) +DECLARE_WILC_BUFFER(g_rx_buf) +DECLARE_WILC_BUFFER(g_fw_buf) + +void *get_tx_buffer(void) +{ + return exported_g_tx_buf; +} +EXPORT_SYMBOL(get_tx_buffer); + +void *get_rx_buffer(void) +{ + return exported_g_rx_buf; +} +EXPORT_SYMBOL(get_rx_buffer); + +void *get_fw_buffer(void) +{ + return exported_g_fw_buf; +} +EXPORT_SYMBOL(get_fw_buffer); + +static int __init wilc_module_init(void) +{ + printk("wilc_module_init\n"); + /* + * alloc necessary memory + */ + MALLOC_WILC_BUFFER(g_tx_buf, LINUX_TX_SIZE) + MALLOC_WILC_BUFFER(g_rx_buf, LINUX_RX_SIZE) + MALLOC_WILC_BUFFER(g_fw_buf, WILC1000_FW_SIZE) + + return 0; +} + +static void __exit wilc_module_deinit(void) +{ + printk("wilc_module_deinit\n"); + FREE_WILC_BUFFER(g_tx_buf) + FREE_WILC_BUFFER(g_rx_buf) + FREE_WILC_BUFFER(g_fw_buf) + + return; +} + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Tony Cho"); +MODULE_DESCRIPTION("WILC1xxx Memory Manager"); +pure_initcall(wilc_module_init); +module_exit(wilc_module_deinit);
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