wifi: rtw89: check DLE FIFO size with reserved size

For SCC mode, some FIFO are reserved, so compare the quantity after minus
the reserved size.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220927062611.30484-9-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/core.h

@@ -2612,6 +2612,7 @@ struct rtw89_chip_info {
 	const struct rtw89_chip_ops *ops;
 	const char *fw_name;
 	u32 fifo_size;
+	u32 dle_scc_rsvd_size;
 	u16 max_amsdu_limit;
 	bool dis_2g_40m_ul_ofdma;
 	u32 rsvd_ple_ofst;

drivers/net/wireless/realtek/rtw89/mac.c

@@ -1324,6 +1324,17 @@ static inline u32 dle_used_size(const struct rtw89_dle_size *wde,
 	       ple->pge_size * (ple->lnk_pge_num + ple->unlnk_pge_num);
 }
 
+static u32 dle_expected_used_size(struct rtw89_dev *rtwdev,
+				  enum rtw89_qta_mode mode)
+{
+	u32 size = rtwdev->chip->fifo_size;
+
+	if (mode == RTW89_QTA_SCC)
+		size -= rtwdev->chip->dle_scc_rsvd_size;
+
+	return size;
+}
+
 static void dle_func_en(struct rtw89_dev *rtwdev, bool enable)
 {
 	if (enable)
@@ -1491,7 +1502,8 @@ static int dle_init(struct rtw89_dev *rtwdev, enum rtw89_qta_mode mode,
 		ext_wde_min_qt_wcpu = ext_cfg->wde_min_qt->wcpu;
 	}
 
-	if (dle_used_size(cfg->wde_size, cfg->ple_size) != rtwdev->chip->fifo_size) {
+	if (dle_used_size(cfg->wde_size, cfg->ple_size) !=
+	    dle_expected_used_size(rtwdev, mode)) {
 		rtw89_err(rtwdev, "[ERR]wd/dle mem cfg\n");
 		ret = -EINVAL;
 		goto error;
@@ -2604,7 +2616,8 @@ static int dle_quota_change(struct rtw89_dev *rtwdev, enum rtw89_qta_mode mode)
 		return -EINVAL;
 	}
 
-	if (dle_used_size(cfg->wde_size, cfg->ple_size) != rtwdev->chip->fifo_size) {
+	if (dle_used_size(cfg->wde_size, cfg->ple_size) !=
+	    dle_expected_used_size(rtwdev, mode)) {
 		rtw89_err(rtwdev, "[ERR]wd/dle mem cfg\n");
 		return -EINVAL;
 	}

drivers/net/wireless/realtek/rtw89/rtw8852a.c

@@ -2190,6 +2190,7 @@ const struct rtw89_chip_info rtw8852a_chip_info = {
 	.ops			= &rtw8852a_chip_ops,
 	.fw_name		= "rtw89/rtw8852a_fw.bin",
 	.fifo_size		= 458752,
+	.dle_scc_rsvd_size	= 0,
 	.max_amsdu_limit	= 3500,
 	.dis_2g_40m_ul_ofdma	= true,
 	.rsvd_ple_ofst		= 0x6f800,

drivers/net/wireless/realtek/rtw89/rtw8852b.c

@@ -66,6 +66,8 @@ static const struct rtw89_chip_ops rtw8852b_chip_ops = {
 
 const struct rtw89_chip_info rtw8852b_chip_info = {
 	.chip_id		= RTL8852B,
+	.fifo_size		= 196608,
+	.dle_scc_rsvd_size	= 98304,
 	.dma_ch_mask		= BIT(RTW89_DMA_ACH4) | BIT(RTW89_DMA_ACH5) |
 				  BIT(RTW89_DMA_ACH6) | BIT(RTW89_DMA_ACH7) |
 				  BIT(RTW89_DMA_B1MG) | BIT(RTW89_DMA_B1HI),

drivers/net/wireless/realtek/rtw89/rtw8852c.c

@@ -3039,6 +3039,7 @@ const struct rtw89_chip_info rtw8852c_chip_info = {
 	.ops			= &rtw8852c_chip_ops,
 	.fw_name		= "rtw89/rtw8852c_fw.bin",
 	.fifo_size		= 458752,
+	.dle_scc_rsvd_size	= 0,
 	.max_amsdu_limit	= 8000,
 	.dis_2g_40m_ul_ofdma	= false,
 	.rsvd_ple_ofst		= 0x6f800,