solos: support new FPGA RAM layout

Buffer sizes have been changed to 2048 bytes.
Flash upgrades use a dedicated RAM block.
Add support for daughterboard.

Signed-off-by: Nathan Williams <nathan@traverse.com.au>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 62 insertions, 9 deletions

diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index bc3079d17876..bfef8d255811 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -59,21 +59,29 @@
 #define RX_DMA_ADDR(port)       (0x30 + (4 * (port)))
 
 #define DATA_RAM_SIZE   32768
-#define BUF_SIZE        4096
+#define BUF_SIZE        2048
+#define OLD_BUF_SIZE    4096 /* For FPGA versions <= 2*/
 #define FPGA_PAGE       528 /* FPGA flash page size*/
 #define SOLOS_PAGE      512 /* Solos flash page size*/
 #define FPGA_BLOCK      (FPGA_PAGE * 8) /* FPGA flash block size*/
 #define SOLOS_BLOCK     (SOLOS_PAGE * 8) /* Solos flash block size*/
 
-#define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2)
-#define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE)
+#define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
+#define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
+#define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
 
 #define RX_DMA_SIZE     2048
 
+#define FPGA_VERSION(a,b) (((a) << 8) + (b))
+#define LEGACY_BUFFERS  2
+#define DMA_SUPPORTED   4
+
 static int reset = 0;
 static int atmdebug = 0;
 static int firmware_upgrade = 0;
 static int fpga_upgrade = 0;
+static int db_firmware_upgrade = 0;
+static int db_fpga_upgrade = 0;
 
 struct pkt_hdr {
         __le16 size;
@@ -116,6 +124,8 @@ struct solos_card {
         wait_queue_head_t param_wq;
         wait_queue_head_t fw_wq;
         int using_dma;
+        int fpga_version;
+        int buffer_size;
 };
 
 
@@ -136,10 +146,14 @@ MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
 MODULE_PARM_DESC(atmdebug, "Print ATM data");
 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
+MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
+MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
 module_param(reset, int, 0444);
 module_param(atmdebug, int, 0644);
 module_param(firmware_upgrade, int, 0444);
 module_param(fpga_upgrade, int, 0444);
+module_param(db_firmware_upgrade, int, 0444);
+module_param(db_fpga_upgrade, int, 0444);
 
 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
                        struct atm_vcc *vcc);
@@ -517,10 +531,32 @@ static int flash_upgrade(struct solos_card *card, int chip)
         if (chip == 0) {
                 fw_name = "solos-FPGA.bin";
                 blocksize = FPGA_BLOCK;
-        } else {
+        } 
+        
+        if (chip == 1) {
                 fw_name = "solos-Firmware.bin";
                 blocksize = SOLOS_BLOCK;
         }
+        
+        if (chip == 2){
+                if (card->fpga_version > LEGACY_BUFFERS){
+                        fw_name = "solos-db-FPGA.bin";
+                        blocksize = FPGA_BLOCK;
+                } else {
+                        dev_info(&card->dev->dev, "FPGA version doesn't support daughter board upgrades\n");
+                        return -EPERM;
+                }
+        }
+        
+        if (chip == 3){
+                if (card->fpga_version > LEGACY_BUFFERS){
+                        fw_name = "solos-Firmware.bin";
+                        blocksize = SOLOS_BLOCK;
+                } else {
+                dev_info(&card->dev->dev, "FPGA version doesn't support daughter board upgrades\n");
+                return -EPERM;
+                }
+        }
 
         if (request_firmware(&fw, fw_name, &card->dev->dev))
                 return -ENOENT;
@@ -536,8 +572,10 @@ static int flash_upgrade(struct solos_card *card, int chip)
         data32 = ioread32(card->config_regs + FPGA_MODE); 
 
         /* Set mode to Chip Erase */
-        dev_info(&card->dev->dev, "Set FPGA Flash mode to %s Chip Erase\n",
-                 chip?"Solos":"FPGA");
+        if(chip == 0 || chip == 2)
+                dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
+        if(chip == 1 || chip == 3)
+                dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
         iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 
 
@@ -557,7 +595,10 @@ static int flash_upgrade(struct solos_card *card, int chip)
                 /* Copy block to buffer, swapping each 16 bits */
                 for(i = 0; i < blocksize; i += 4) {
                         uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
-                        iowrite32(word, RX_BUF(card, 3) + i);
+                        if(card->fpga_version > LEGACY_BUFFERS)
+                                iowrite32(word, FLASH_BUF + i);
+                        else
+                                iowrite32(word, RX_BUF(card, 3) + i);
                 }
 
                 /* Specify block number and then trigger flash write */
@@ -1094,12 +1135,18 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
         fpga_ver = (data32 & 0x0000FFFF);
         major_ver = ((data32 & 0xFF000000) >> 24);
         minor_ver = ((data32 & 0x00FF0000) >> 16);
+        card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
+        if (card->fpga_version > LEGACY_BUFFERS)
+                card->buffer_size = BUF_SIZE;
+        else
+                card->buffer_size = OLD_BUF_SIZE;
         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
                  major_ver, minor_ver, fpga_ver);
 
-        if (0 && fpga_ver > 27)
+        if (card->fpga_version >= DMA_SUPPORTED){
                 card->using_dma = 1;
-        else {
+        } else {
+                card->using_dma = 0;
                 /* Set RX empty flag for all ports */
                 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
         }
@@ -1131,6 +1178,12 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
         if (firmware_upgrade)
                 flash_upgrade(card, 1);
 
+        if (db_fpga_upgrade)
+                flash_upgrade(card, 2);
+
+        if (db_firmware_upgrade)
+                flash_upgrade(card, 3);
+
         err = atm_init(card);
         if (err)
                 goto out_free_irq;