feat: lru eviction policy on page caches

[lunaix-os.git] / lunaix-os / hal / ahci / ahci.c

diff --git a/lunaix-os/hal/ahci/ahci.c b/lunaix-os/hal/ahci/ahci.c
index 39e511c33fde391a965c9b455daf06dc35312b54..a04bca7e2551661566e04bc3ca188e73f1dbee33 100644 (file)
--- a/lunaix-os/hal/ahci/ahci.c
+++ b/lunaix-os/hal/ahci/ahci.c
@@ -34,7 +34,7 @@ LOG_MODULE("AHCI")
 static struct ahci_hba hba;
 
 void
-__ahci_hba_isr(isr_param param);
+__ahci_hba_isr(const isr_param* param);
 
 int
 ahci_init_device(struct hba_port* port);
@@ -161,8 +161,6 @@ ahci_init()
         // 需要通过全部置位去清空这些寄存器（相当的奇怪……）
         port_regs[HBA_RPxSERR] = -1;
 
-        port_regs[HBA_RPxIE] |= (HBA_PxINTR_DPS);
-
         hba.ports[i] = port;
 
         if (!HBA_RPxSSTS_IF(port->ssts)) {
@@ -187,9 +185,10 @@ char sata_ifs[][20] = { "Not detected",
                         "SATA III (6.0Gbps)" };
 
 void
-__ahci_hba_isr(isr_param param)
+__ahci_hba_isr(const isr_param* param)
 {
-    // TODO: hba interrupt
+    // TODO: clear the interrupt status
+    // TODO: I/O-operation scheduler should be here
     kprintf(KDEBUG "HBA INTR\n");
 }
 
@@ -293,7 +292,7 @@ hba_prepare_cmd(struct hba_port* port,
         cmd_header->prdt_len = 1;
         cmd_table->entries[0] =
           (struct hba_prdte){ .data_base = vmm_v2p(buffer),
-                              .byte_count = (size - 1) | (0x80000000) };
+                              .byte_count = size - 1 };
     }
 
     *cmdh = cmd_header;
@@ -309,6 +308,9 @@ ahci_init_device(struct hba_port* port)
     struct hba_cmdt* cmd_table;
     struct hba_cmdh* cmd_header;
 
+    // mask DHR interrupt
+    port->regs[HBA_RPxIE] &= ~HBA_PxINTR_DHR;
+
     // 确保端口是空闲的
     wait_until(!(port->regs[HBA_RPxTFD] & (HBA_PxTFD_BSY)));
 
@@ -402,6 +404,9 @@ ahci_init_device(struct hba_port* port)
     scsi_parse_capacity(port->device, (uint32_t*)data_in);
 
 done:
+    // reset interrupt status and unmask D2HR interrupt
+    port->regs[HBA_RPxIS] = -1;
+    port->regs[HBA_RPxIE] |= HBA_PxINTR_DHR;
     achi_register_ops(port);
 
     vfree_dma(data_in);
@@ -410,6 +415,8 @@ done:
     return 1;
 
 fail:
+    port->regs[HBA_RPxIS] = -1;
+    port->regs[HBA_RPxIE] |= HBA_PxINTR_DHR;
     vfree_dma(data_in);
     vfree_dma(cmd_table);
 
@@ -417,11 +424,11 @@ fail:
 }
 
 int
-ahci_identify_device(struct hba_port* port)
+ahci_identify_device(struct hba_device* device)
 {
     // 用于重新识别设备（比如在热插拔的情况下）
-    vfree(port->device);
-    return ahci_init_device(port);
+    vfree(device);
+    return ahci_init_device(device->port);
 }
 
 void